CN102500566A - Maintenance-free slurry washer applied to hazardous environment and working method of maintenance-free slurry washer - Google Patents
Maintenance-free slurry washer applied to hazardous environment and working method of maintenance-free slurry washer Download PDFInfo
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- CN102500566A CN102500566A CN2011102839559A CN201110283955A CN102500566A CN 102500566 A CN102500566 A CN 102500566A CN 2011102839559 A CN2011102839559 A CN 2011102839559A CN 201110283955 A CN201110283955 A CN 201110283955A CN 102500566 A CN102500566 A CN 102500566A
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Abstract
The invention relates to a maintenance-free slurry washer applied to a hazardous environment and a working method of the maintenance-free slurry washer. The washer comprises a pulse jet conveying system, a slurry washing and filtering system and a user terminal workstation. In the process of washing slurry, the slurry can be washed by utilizing a gas-liquid-solid three-phase fluidized bed; washed waste liquid is leached through a filter net at the bottom of the three-phase fluidized bed; and washed clean slurry can be conveyed to a storage area or an area to be processed through the pulse jet conveying system without a mechanical movable part. The operation power of the whole washer completely comes from high-pressure gas and is realized by being dependent on a gas ejector; and the slurry washer disclosed by the invention does not comprise the mechanical movable part which is in direct contact with a hazardous fluid and can be remotely controlled, therefore, maintenance requirements can be sufficiently reduced under hazardous environments, such as a radioactive environment, a corrosive environment, a toxic environment, a high-temperature environment and the like, thus, personal safety of maintenance staffs and operators can be ensured.
Description
Technical field
The present invention relates to solid particle washing technology field, particularly a kind of freedom from repairs mud washer and method of work thereof that is suitable for the hazardous environment use.
Background technology
In commercial production such as nuclear energy, chemical industry, metallurgy, mine, usually relate to the carrying out washing treatment process of solid material with radioactivity, corrosivity, toxicity, high temperature etc.Washing to these dangerous materials; As adopt traditional washing methods; Like stirred tank, cross-flow filtration washing etc., in washing process, no matter be that radioactivity or corrosivity etc. all cause the acceleration of mechanical movable member and encapsulant to damage easily; Therefore must carry out frequent maintenance and change operation damaging parts; This has not only caused high maintenance cost, and simultaneously because Operation and maintenance all need personnel's low coverage to carry out, these danger are easy to again bring serious personal injury to low coverage maintenance, operating personnel.
Therefore; For having dangerous solid material; For avoid the use of as far as possible in the process maintenance operation and to operating personnel's personal injury, develop a kind ofly have freedom from repairs character, remote controlled mud washer has the meaning of particular importance, does not also have such device to occur at present.
Summary of the invention
In order to overcome the deficiency that above-mentioned prior art exists; The object of the present invention is to provide a kind of freedom from repairs mud washer and method of work thereof that hazardous environment uses that be suitable for; Realized with the freedom from repairs being prerequisite; To the washing operation of dangerous solid material, a kind of new-type mortar washer that is not processed the direct mechanical movable member that contacts of fluid, is easy to remote control operation is provided.
In order to achieve the above object, the technical scheme that the present invention adopted is:
A kind ofly be suitable for the freedom from repairs mud washer that hazardous environment uses, it is gas-liquid-solid three-phase fluid bed 27 that this washer comprises, three phase fluidized bed 27 inner bottom parts are provided with stainless steel filtering net 28, and three phase fluidized bed 27 bottoms link to each other with suction filtration case 29 through pipeline 41; The side of three phase fluidized bed 27 links to each other with the side mouth 16 of jet conveyer 13 through horizontal transverse tube 17; The inlet 42 of the nozzle 14 in the described jet conveyer 13 links to each other with the bottom opening 21 of piston cylinder 12 through pipeline 22; The outlet 43 of the diffuser 15 in the described jet conveyer 13 links to each other with riser 18; Described riser 18 devices 19 separated from the gas link to each other; And second gas ejector presses towards the outlet of injector 10 to link to each other with described piston cylinder 12 tops through pipeline 40 to the outlet emptying of the pumping projector 9 in 3; First gas ejector is to the outlet emptying of the filtration injector 36 in 35, and the outlet of washing injector 37 links to each other with the opening 30 at described suction filtration case 29 tops through pipeline 39; The inlet of the filtration injector 36 of the described first injector centering, washing injector 37 links to each other with high-pressure gas pipeline 5, and pipeline switch is respectively by first magnetic valve 33 and 34 controls of second magnetic valve; Pumping projector 9 inlets of the said second injector centering link to each other with high pressure line 5; Pipeline switch is by 6 controls of the 3rd magnetic valve; Pressure is divided into first via air inlet pipeline 44 towards the inlet of injector 10 and links to each other with high pressure line 5 with the second road air inlet pipeline 45, respectively through the 4th magnetic valve 7 and the 5th magnetic valve 8 gauge taps; The switching signal control end of said first magnetic valve 33, second magnetic valve 34, the 3rd magnetic valve 6, the 4th magnetic valve 7 and the 5th magnetic valve 8 all links to each other with described control workstation1 through control bus 2, by control workstation1 gauge tap; The pipeline front end of said first magnetic valve 33, second magnetic valve 34, the 3rd magnetic valve 6, the 4th magnetic valve 7 and the 5th magnetic valve 8 is regulated admission pressure and flows through first control valve 49, second control valve 50, the 3rd control valve 46, the 4th control valve 47 and the 5th control valve 48 respectively.
Be suitable for the method for work of the freedom from repairs mud washer of hazardous environment use, specific as follows:
1) mud washing: the control workstation1 is controlled the 5th magnetic valve 8 and is opened; Regulate admission pressure through the 5th control valve 48; Make charge flow rate be in preset range, the 3rd magnetic valve 6 and the 4th magnetic valve 7 are closed, gases at high pressure with low tolerance through second gas ejector to the pressure in 3 towards injector 10; Along described pipeline 40, piston cylinder 12, pipeline 22; Get into jet conveyer 13, through producing back pressure in the horizontal transverse tube 17, this back pressure stops the horizontal transverse tube 17 of the gas-liquid-solid mixture entering in the described three phase fluidized bed 27 to these gases at high pressure through the side mouth 16 in the jet conveyer 13; The solid material that needs washing is through pipeline 25; Cleaning solution 24 gets into three phase fluidized bed 27 through liquid meter 23 along pipeline 40, and described control workstation1 is controlled described first magnetic valve 33 and closed, and second magnetic valve 34 is opened; Gases at high pressure are regulated the back through described second control valve 50 and are got into described first gas ejector to the washing injector 37 in 35 and along the described suction filtration case 29 of pipeline 39 entering with preset pressure and flow; These gases at high pressure disperse to get into three phase fluidized bed 27 through pipeline 41 through described stainless steel mesh 28, and stir solid material to be washed and the cleaning solution on the screen cloth 28, form the gas-liquid-solid three-phase fluid bed turbulence of carrying out; Thereby realized the washing of mud, the gases at high pressure that overflow bed get into follow-up tail gas treating unit through gas-freeing line 26;
2) waste liquid filters: the control workstation1 is controlled described the 5th magnetic valve 8 and is opened; Regulate admission pressure through the 5th control valve 48; Make charge flow rate be in preset range; The 3rd magnetic valve 6 and the 4th magnetic valve 7 are closed; Gases at high pressure with preset tolerance through second gas ejector to the pressure in 3 towards injector 10, along described pipeline 40, piston cylinder 12, pipeline 22, get into jet conveyer 13; These gases at high pressure through the side mouth 16 in the described jet conveyer 13 through producing back pressure in the horizontal transverse tube 17; This back pressure stops the horizontal transverse tube 17 of the gas-liquid-solid mixture entering in the described three phase fluidized bed 27, and the control workstation1 is controlled second magnetic valve 34 and closed, and first magnetic valve 33 is opened; Gases at high pressure are regulated the back through first control valve 49 and are got into first gas ejector to the filtration injector 36 also emptying in 35 with preset pressure and flow; Filter negative pressure that injector 36 produces cause gas in the suction filtration tube 29 through pipeline 39, washing injector 35, connect transverse tube 51 and be discharged from from the port of export 38 that filters injector 36, thereby cause described stainless steel filtering net 28 belows to produce negative pressuren zone, this negative pressuren zone will make the scrub raffinate in the mixture of filter screen top be filtered in the suction filtration case 29;
3) wash the back slurry transportation: the control workstation1 is controlled first magnetic valve 33, second magnetic valve 34, the 4th magnetic valve 7 and the 5th magnetic valve 8 and is closed; The 3rd magnetic valve 6 is opened; Regulate admission pressure through the 3rd control valve 46; Gases at high pressure pass through described second gas ejector to the pumping projector 9 in 3 with preset pressure and speed; Gas in the piston cylinder 12 along described pipeline 40, press towards injector 10, connect the port of export 4 of transverse tube 11 through pumping projector 9 and be discharged from, therefore be in negative pressuren zone in the piston cylinder 12, thereby the mixture in the described three phase fluidized bed 27 gets into piston cylinders 12 along horizontal transverse tube 17, jet conveyer 13, pipeline 22; When suction finishes; Described control workstation1 is controlled described first magnetic valve 33, second magnetic valve 34, the 3rd magnetic valve 6 and the 5th magnetic valve 8 and is closed, and the 4th magnetic valve 7 is opened, gases at high pressure through the 4th control valve 47 regulate the back with preset pressure and flow get into second gas ejector to the pressure in 3 towards injector 10; Get into piston cylinder 12 along pipeline 40; The interior liquid-solid mixture of force piston tube gets into the nozzle 14 in the jet conveyers 13 through pipeline 22 outlet 52 is with the pattern ejection, and this jet can not return three phase fluidized bed along horizontal transverse tube 17 through side mouth 16 under action of inertia, but directly from the 53 entering diffusers 15 that enter the mouth; And and then get in the gas separators 19 along transfer pipeline 18, the clean mud after washing then gets into from gas-liquid separator 19 outlets 20 and stores or pending zones.
Evidence, there is not mechanical movable member in the freedom from repairs mud washer that is suitable for hazardous environment of the present invention, the fragile problem of non mechanical movable, thus can avoid the maintenance under the hazardous environment in the use.Simultaneously, power of the present invention derives from gases at high pressure fully and relies on gas ejector to realizing device drives, and the conversion of each interprocedual is not rely on to carry out with the magnetic valve that dangerous fluid directly contacts.Can devices such as magnetic valve and control valve be placed the safety zone, utilize the control work station just can easily realize remote control operation.
Description of drawings
Fig. 1 is the structural representation that is suitable for the freedom from repairs mud washer of hazardous environment of the present invention.
Fig. 2 is the structural representation of jet conveyer of the present invention.
Fig. 3 is the right structural representation of gas ejector.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done more detailed explanation.
Like Fig. 1, Fig. 2 and shown in Figure 3; Be suitable for the freedom from repairs mud washer that hazardous environment uses; It is gas-liquid-solid three-phase fluid bed 27 that this washer comprises, three phase fluidized bed 27 inner bottom parts are provided with stainless steel filtering net 28, and three phase fluidized bed 27 bottoms link to each other with suction filtration case 29 through pipeline 41; The side of three phase fluidized bed 27 links to each other with the side mouth 16 of jet conveyer 13 through horizontal transverse tube 17; The inlet 42 of the nozzle 14 in the described jet conveyer 13 links to each other with the bottom opening 21 of piston cylinder 12 through pipeline 22; The outlet 43 of the diffuser 15 in the described jet conveyer 13 links to each other with riser 18; Described riser 18 devices 19 separated from the gas link to each other; And second gas ejector presses towards the outlet of injector 10 to link to each other with described piston cylinder 12 tops through pipeline 40 to the outlet emptying of the pumping projector 9 in 3; First gas ejector is to the outlet emptying of the filtration injector 36 in 35, and the outlet of washing injector 37 links to each other with the opening 30 at described suction filtration case 29 tops through pipeline 39; The inlet of the filtration injector 36 of the described first injector centering, washing injector 37 links to each other with high-pressure gas pipeline 5, and pipeline switch is respectively by first magnetic valve 33 and 34 controls of second magnetic valve; Pumping projector 9 inlets of the said second injector centering link to each other with high pressure line 5; Pipeline switch is by 6 controls of the 3rd magnetic valve; Pressure is divided into first via air inlet pipeline 44 towards the inlet of injector 10 and links to each other with high pressure line 5 with the second road air inlet pipeline 45, respectively through the 4th magnetic valve 7 and the 5th magnetic valve 8 gauge taps; The switching signal control end of said first magnetic valve 33, second magnetic valve 34, the 3rd magnetic valve 6, the 4th magnetic valve 7 and the 5th magnetic valve 8 all links to each other with described control workstation1 through control bus 2, by control workstation1 gauge tap; The pipeline front end of said first magnetic valve 33, second magnetic valve 34, the 3rd magnetic valve 6, the 4th magnetic valve 7 and the 5th magnetic valve 8 is regulated admission pressure and flows through first control valve 49, second control valve 450, the 3rd control valve 46, the 4th control valve 47 and the 5th control valve 48 respectively.
Be suitable for the method for work of the freedom from repairs mud washer of hazardous environment use, specific as follows:
1) mud washing: the control workstation1 is controlled the 5th magnetic valve 8 and is opened; Regulate admission pressure through the 5th control valve 48; Make charge flow rate be in preset range, the 3rd magnetic valve 6 and the 4th magnetic valve 7 are closed, gases at high pressure with low tolerance through second gas ejector to the pressure in 3 towards injector 10; Along described pipeline 40, piston cylinder 12, pipeline 22; Get into jet conveyer 13, through producing back pressure in the horizontal transverse tube 17, this back pressure stops the horizontal transverse tube 17 of the gas-liquid-solid mixture entering in the described three phase fluidized bed 27 to these gases at high pressure through the side mouth 16 in the jet conveyer 13; The solid material that needs washing is through pipeline 25; Cleaning solution 24 gets into three phase fluidized bed 27 through liquid meter 23 along pipeline 40, and described control workstation1 is controlled described first magnetic valve 33 and closed, and second magnetic valve 34 is opened; Gases at high pressure are regulated the back through described second control valve 50 and are got into described first gas ejector to the washing injector 37 in 35 and along the described suction filtration case 29 of pipeline 39 entering with preset pressure and flow; These gases at high pressure disperse to get into three phase fluidized bed 27 through pipeline 41 through described stainless steel mesh 28, and stir solid material to be washed and the cleaning solution on the screen cloth 28, form the gas-liquid-solid three-phase fluid bed turbulence of carrying out; Thereby realized the washing of mud, the gases at high pressure that overflow bed get into follow-up tail gas treating unit through gas-freeing line 26;
2) waste liquid filters: the control workstation1 is controlled described the 5th magnetic valve 8 and is opened; Regulate admission pressure through the 5th control valve 48; Make charge flow rate be in preset range; The 3rd magnetic valve 6 and the 4th magnetic valve 7 are closed; Gases at high pressure with preset tolerance through second gas ejector to the pressure in 3 towards injector 10, along described pipeline 40, piston cylinder 12, pipeline 22, get into jet conveyer 13; These gases at high pressure through the side mouth 16 in the described jet conveyer 13 through producing back pressure in the horizontal transverse tube 17; This back pressure stops the horizontal transverse tube 17 of the gas-liquid-solid mixture entering in the described three phase fluidized bed 27, and the control workstation1 is controlled second magnetic valve 34 and closed, and first magnetic valve 33 is opened; Gases at high pressure are regulated the back through first control valve 49 and are got into first gas ejector to the filtration injector 36 also emptying in 35 with preset pressure and flow; Filter negative pressure that injector 36 produces cause gas in the suction filtration tube 29 through pipeline 39, washing injector 37, connect transverse tube 51 and be discharged from from the port of export 38 that filters injector 36, thereby cause described stainless steel filtering net 28 belows to produce negative pressuren zone, this negative pressuren zone will make the scrub raffinate in the mixture of filter screen top be filtered in the suction filtration case 29;
3) wash the back slurry transportation: the control workstation1 is controlled first magnetic valve 33, second magnetic valve 34, the 4th magnetic valve 7 and the 5th magnetic valve 8 and is closed; The 3rd magnetic valve 6 is opened; Regulate admission pressure through the 3rd control valve 46; Gases at high pressure pass through described second gas ejector to the pumping projector 9 in 3 with preset pressure and speed; Gas in the piston cylinder 12 along described pipeline 40, press towards injector 10, connect the port of export 4 of transverse tube 11 through pumping projector 9 and be discharged from, therefore be in negative pressuren zone in the piston cylinder 12, thereby the mixture in the described three phase fluidized bed 27 gets into piston cylinders 12 along horizontal transverse tube 17, jet conveyer 13, pipeline 22; When suction finishes; Described control workstation1 is controlled described first magnetic valve 33, second magnetic valve 34, the 3rd magnetic valve 6 and the 5th magnetic valve 8 and is closed, and the 4th magnetic valve 7 is opened, gases at high pressure through the 4th control valve 47 regulate the back with preset pressure and flow get into second gas ejector to the pressure in 3 towards injector 10; Get into piston cylinder 12 along pipeline 40; The interior liquid-solid mixture of force piston tube gets into the nozzle 14 in the jet conveyers 13 through pipeline 22 outlet 52 is with the pattern ejection, and this jet can not return three phase fluidized bed along horizontal transverse tube 17 through side mouth 16 under action of inertia, but directly from the 53 entering diffusers 15 that enter the mouth; And and then get in the gas separators 19 along transfer pipeline 18, the clean mud after washing then gets into from gas-liquid separator 19 outlets 20 and stores or pending zones.
Claims (2)
1. one kind is suitable for the freedom from repairs mud washer that hazardous environment uses; It is characterized in that: this washer comprises gas-liquid-solid three-phase fluid bed (27); Three phase fluidized bed (27) inner bottom part is provided with stainless steel filtering net (28), and three phase fluidized bed (27) bottom links to each other with suction filtration case (29) through pipeline (41); The side of three phase fluidized bed (27) links to each other with the side mouth (16) of jet conveyer (13) through horizontal transverse tube (17); The inlet (42) of the nozzle (14) in the described jet conveyer (13) links to each other with the bottom opening (21) of piston cylinder (12) through pipeline (22); The outlet (43) of the diffuser (15) in the described jet conveyer (13) links to each other with riser (18); Described riser (18) device separated from the gas (19) links to each other; And second gas ejector presses towards the outlet of injector (10) to link to each other with described piston cylinder (12) top through pipeline (40) to the outlet emptying of the pumping projector in (3) (9); First gas ejector is to the outlet emptying of the filtration injector (36) in (35), and the outlet of washing injector (37) links to each other with the opening (30) at described suction filtration case (29) top through pipeline (39); The inlet of the filtration injector (36) of the described first injector centering, washing injector (37) links to each other with high-pressure gas pipeline (5), and pipeline switch is respectively by first magnetic valve (33) and second magnetic valve (34) control; The pumping projector of the said second injector centering (9) inlet links to each other with high pressure line (5); Pipeline switch is controlled by the 3rd magnetic valve (6); Pressure is divided into first via air inlet pipeline (44) towards the inlet of injector (10) and links to each other with high pressure line (5) with the second road air inlet pipeline (45), respectively through the 4th magnetic valve (7) and the 5th magnetic valve (8) gauge tap; The switching signal control end of said first magnetic valve (33), second magnetic valve (34), the 3rd magnetic valve (6), the 4th magnetic valve (7) and the 5th magnetic valve (8) all links to each other with described control work station (1) through control bus (2), by control work station (1) gauge tap; The pipeline front end of said first magnetic valve (33), second magnetic valve (34), the 3rd magnetic valve (6), the 4th magnetic valve (7) and the 5th magnetic valve (8) is regulated admission pressure and flow through first control valve (49), second control valve (50), the 3rd control valve (46), the 4th control valve (47) and the 5th control valve (48) respectively.
2. the method for work that is suitable for the freedom from repairs mud washer of hazardous environment use according to claim 1 is characterized in that, and is specific as follows:
1) mud washing: control work station (1) control the 5th magnetic valve (8) is opened; Regulate admission pressure through the 5th control valve (48); Make charge flow rate be in preset range, the 3rd magnetic valve (6) and the 4th magnetic valve (7) are closed, gases at high pressure with low tolerance through second gas ejector to the pressure in (3) towards injector (10); Along described pipeline (40), piston cylinder (12), pipeline (22); Get into jet conveyer (13), through producing back pressure in the horizontal transverse tube (17), this back pressure stops the gas-liquid-solid mixture in the described three phase fluidized bed (27) to get into horizontal transverse tube (17) to these gases at high pressure through the side mouth (16) in the jet conveyer (13); The solid material that needs washing is through pipeline (25); Cleaning solution (24) gets into three phase fluidized bed (27) through liquid meter (23) along pipeline (40), and described control work station (1) described first magnetic valve of control (33) cuts out, and second magnetic valve (34) is opened; Gases at high pressure are regulated the back through described second control valve (50) and are got into described first gas ejector to the washing injector (37) in (35) and along pipeline (39) entering described suction filtration case (29) with preset pressure and flow; These gases at high pressure disperse to get into three phase fluidized bed (27) through pipeline (41) through described stainless steel mesh (28), and stir solid material to be washed and the cleaning solution on the screen cloth (28), form the gas-liquid-solid three-phase fluid bed turbulence of carrying out; Thereby realized the washing of mud, the gases at high pressure that overflow bed get into follow-up tail gas treating unit through gas-freeing line (26);
2) waste liquid filters: control work station (1) described the 5th magnetic valve of control (8) is opened; Regulate admission pressure through the 5th control valve (48); Make charge flow rate be in preset range; The 3rd magnetic valve (6) and the 4th magnetic valve (7) are closed; Gases at high pressure with preset tolerance through second gas ejector to the pressure in (3) towards injector (10), along described pipeline (40), piston cylinder (12), pipeline (22), get into jet conveyer (13); These gases at high pressure through the side mouth (16) in the described jet conveyer (13) through producing back pressure in the horizontal transverse tube (17); This back pressure stops the gas-liquid-solid mixture in the described three phase fluidized bed (27) to get into horizontal transverse tube (17), and control work station (1) control second magnetic valve (34) cuts out, and first magnetic valve (33) is opened; Gases at high pressure are regulated the back through first control valve (49) and are got into first gas ejector to filtration injector (36) and emptying in (35) with preset pressure and flow; Filter negative pressure that injector (36) produces cause gas in the suction filtration tube (29) through pipeline (39), washing injector (37), connect transverse tube (51) and be discharged from from the port of export (38) that filters injector (36), thereby cause described stainless steel filtering net (28) below to produce negative pressuren zone, this negative pressuren zone will make the scrub raffinate in the mixture above the filter screen be filtered in the suction filtration case (29);
3) wash the back slurry transportation: control work station (1) control first magnetic valve (33), second magnetic valve (34), the 4th magnetic valve (7) and the 5th magnetic valve (8) are closed; The 3rd magnetic valve (6) is opened; Regulate admission pressure through the 3rd control valve (46); Gases at high pressure pass through described second gas ejector to the pumping projector in (3) (9) with preset pressure and speed; Gas in the piston cylinder (12) is discharged from through the port of export (4) of pumping projector (9) towards injector (10), connection transverse tube (11) along described pipeline (40), pressure; Therefore be in negative pressuren zone in the piston cylinder (12); Described three phase fluidized bed (27) thus in mixture get into piston cylinder (12) along horizontal transverse tube (17), jet conveyer (13), pipeline (22), when suction finishes, described control work station (1) control described first magnetic valve (33), second magnetic valve (34), the 3rd magnetic valve (6) and the 5th magnetic valve (8) are closed; The 4th magnetic valve (7) is opened; Gases at high pressure through the 4th control valve (47) regulate the back with preset pressure and flow get into second gas ejector to the pressure in (3) towards injector (10), get into piston cylinder (12) along pipeline (40), the liquid-solid mixture in the force piston tube sprays with pattern through the outlet (52) of the nozzle (14) in pipeline (22) the entering jet conveyer (13); This jet can not return three phase fluidized bed along horizontal transverse tube (17) through side mouth (16) under action of inertia; But directly get into the diffusers (15) from inlet (53), and and then get in the gas separator (19) along transfer pipeline (18), the clean mud after washing then gets into from gas-liquid separator (19) outlet (20) and stores or pending zone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110283955.9A CN102500566B (en) | 2011-09-22 | 2011-09-22 | Maintenance-free slurry washer applied to hazardous environment and working method of maintenance-free slurry washer |
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| CN201110283955.9A CN102500566B (en) | 2011-09-22 | 2011-09-22 | Maintenance-free slurry washer applied to hazardous environment and working method of maintenance-free slurry washer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110634586A (en) * | 2019-09-23 | 2019-12-31 | 中国核动力研究设计院 | Method and system for treating radioactive organic waste by using three-phase fluidized bed |
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| US20080013064A1 (en) * | 2006-03-13 | 2008-01-17 | Nikon Corporation | Exposure apparatus, maintenance method, exposure method, and method for producing device |
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