CN105032114A - Energy-saving method for molecular sieve purification systems - Google Patents
Energy-saving method for molecular sieve purification systems Download PDFInfo
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- CN105032114A CN105032114A CN201510574606.0A CN201510574606A CN105032114A CN 105032114 A CN105032114 A CN 105032114A CN 201510574606 A CN201510574606 A CN 201510574606A CN 105032114 A CN105032114 A CN 105032114A
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- molecular sieve
- electric heater
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- dirty nitrogen
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Abstract
The invention discloses an energy-saving method for molecular sieve purification systems and belongs to the field of energy-saving methods for air separation systems. According to the energy-saving method, energy is saved and consumption is reduced in the operation process of a molecular sieve purification system, the stability and safety of the whole air separation system are not affected, and operation of operators is not affected. The energy-saving method for the molecular sieve system comprises the following steps of firstly, conducting pilot production on the basis of the initial setting temperature value of an electric heater, secondly, conducting pilot production by decreasing the setting temperature value of the electric heater, and thirdly determining the best setting temperature of the electric heater. The energy-saving method is applicable to the energy-saving operation of various molecular sieve purification systems.
Description
Technical field
The present invention is specifically related to a kind of sieve purification system power-economizing method, belongs to space division system power-economizing method method field.
Background technology
Sieve purification system operation principle is the molecular sieve of air through running, and utilizes the absorption property of molecular sieve to be adsorbed by the impurity such as the moisture in air, carbon dioxide, hydrocarbon; Simultaneously molecular sieve of another regeneration principle of utilizing high temperature to resolve, with the impurity on the dirty nitrogen removing adsorbent after electric heater heating, the absorption property of reduction adsorption agent.
Molecular sieve electric heater is in oepration at full load state, the cold blowing peak value of the molecular sieve adsorber most high energy that is in operation is caused to reach more than 140 DEG C, and the minimum design load of cold blowing peak value is generally about 80 DEG C, is satisfied with the demand of molecular sieve adsorber regeneration far away, great energy waste certainly will be caused.
The power-economizing method of current employing is shortened the molecular sieve electric heater heat time, though the method can reduce sieve purification system energy consumption, but the stability of whole space division system can be had influence on, due to the shortening of time, molecular sieve adsorber switches frequent, cause subsequent handling unstable, affect production, too increase the difficulty of subsequent handling operation.
Summary of the invention
Therefore, the object of the invention is to provide a kind of power-economizing method, energy-saving and cost-reducing in sieve purification system operating process, and does not affect the operation of the stability of whole space division system, security and operating personnel, a kind of sieve purification system power-economizing method, said method comprising the steps of:
Step one is produced as a trial with electric heater preliminary set time value
In sieve purification system local operation dish setting electric heater temperature to initial temperature, meeting under the dirty nitrogen use level condition that sieve purification system normally runs, carry out regenerating molecular sieve operation, the dirty nitrogen when cold blowing peak value of record molecular sieve adsorber, heating after dirty nitrogen use level, heating enters the minimum temperature of molecular sieve adsorber;
Step 2 reduces electric heater set temperature value and produces as a trial
The design temperature of electric heater is lowered 5 DEG C-10 DEG C, and dirty nitrogen use level is identical with step one, carries out regenerating molecular sieve operation, and the dirty nitrogen recorded after the cold blowing peak value of molecular sieve adsorber, heating enters the minimum temperature of molecular sieve adsorber;
The best design temperature of step 3 determination electric heater
Repeat step 2, until occur that following two kinds of conditions stop trial production for the moment, the electric heater set temperature value that the last time is produced as a trial is defined as the best design temperature of electric heater
Condition one: the cold blowing peak value of molecular sieve adsorber is less than minimum design load;
Condition two: the dirty nitrogen after heating enters the minimum temperature of molecular sieve adsorber lower than minimum safe operating energy loss value.
Further, in described step one, electric heater preliminary set time value is 190 DEG C.
Further, in described step 2, the design temperature of electric heater lowers 5 DEG C.
Beneficial effect of the present invention is: use sieve purification system power-economizing method of the present invention, considerably reduce power consumption, do not affect the operation of the stability of whole space division system, security and operating personnel simultaneously, be applicable to various sieve purification system.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of sieve purification system power-economizing method of the present invention.
Detailed description of the invention
By reference to the accompanying drawings the specific embodiment of the present invention is described for certain space division system below in the 6th generation:
Method flow as shown in Figure 1, comprises the following steps:
Step one is produced as a trial with electric heater preliminary set time value 190 DEG C
In sieve purification system local operation dish setting electric heater temperature to initial temperature 190 DEG C, at this temperature, the cold blowing peak value of molecular sieve adsorber reaches peak, meeting under the dirty nitrogen use level condition that sieve purification system normally runs, carry out regenerating molecular sieve operation, dirty nitrogen use level 35000m when the cold blowing peak value 143 of record molecular sieve adsorber, heating
3.h
-1, dirty nitrogen after heating enters the minimum temperature 183.5 DEG C of molecular sieve adsorber;
Step 2 reduces electric heater set temperature value 10 DEG C and produces as a trial
The design temperature of electric heater is lowered 10 DEG C to 180 DEG C, dirty nitrogen use level 35000m
3.h
-1identical with step one, carry out regenerating molecular sieve operation, the dirty nitrogen recorded after the cold blowing peak value 135 DEG C of molecular sieve adsorber, heating enters the minimum temperature 173.6 DEG C of molecular sieve adsorber;
The best design temperature of step 3 determination electric heater
The minimum design load of native system cold blowing peak value is 80 DEG C, it is 150 DEG C that the dirty nitrogen of the heating that designing unit provides enters molecular sieve adsorption actuator temperature minimum safe operating energy loss value, when heating dirty nitrogen and entering molecular sieve adsorption actuator temperature lower than 150 DEG C, activated alumina can not adsorption moisture completely, has an impact safely to subsequent handling.
Repeat step 2, respectively by near for electric heater design temperature 170 DEG C, 165 DEG C, 160 DEG C, 155 DEG C, corresponding cold blowing peak value is respectively 126 DEG C, 120 DEG C, 114 DEG C, 105 DEG C, all be greater than 80 DEG C, when near 160 DEG C of electric heater design temperature, the minimum temperature that dirty nitrogen after heating enters molecular sieve adsorber is 153.4 DEG C, when near 155 DEG C of electric heater design temperature, the minimum temperature that dirty nitrogen after heating enters molecular sieve adsorber is 148.5 DEG C, lower than 150 DEG C, stop trial production, the electric heater set temperature value 160 DEG C that last time is produced as a trial is defined as the best design temperature of electric heater.
Electric heater design temperature of the present invention often reduces by 1 DEG C and estimates that annual energy consumption of saving is: [1.04 × (1.3 × 35000) × 1 ÷ 3600] × 10 × 365 × 0.44=21109.978 unit ≈ 2.11 ten thousand yuan
In formula: 1.04 is dirty pressurization by nitrogen gas specific heat capacity, and 1.3 is dirty density of nitrogen, and 35000 is dirty nitrogen amount, 10 for electric heater heat time every day be 10 hours, 0.44 is electricity price (unit).
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a sieve purification system power-economizing method, is characterized in that, said method comprising the steps of:
Step one is produced as a trial with electric heater preliminary set time value
In sieve purification system local operation dish setting electric heater temperature to initial temperature, meeting under the dirty nitrogen use level condition that sieve purification system normally runs, carry out regenerating molecular sieve operation, the dirty nitrogen when cold blowing peak value of record molecular sieve adsorber, heating after dirty nitrogen use level, heating enters the minimum temperature of molecular sieve adsorber;
Step 2 reduces electric heater set temperature value and produces as a trial
The design temperature of electric heater is lowered 5 DEG C-10 DEG C, and dirty nitrogen use level is identical with step one, carries out regenerating molecular sieve operation, and the dirty nitrogen recorded after the cold blowing peak value of molecular sieve adsorber, heating enters the minimum temperature of molecular sieve adsorber;
The best design temperature of step 3 determination electric heater
Repeat step 2, until occur that following two kinds of conditions stop trial production for the moment, the electric heater set temperature value that the last time is produced as a trial is defined as the best design temperature of electric heater
Condition one: the cold blowing peak value of molecular sieve adsorber is less than minimum design load;
Condition two: the dirty nitrogen after heating enters the minimum temperature of molecular sieve adsorber lower than minimum safe operating energy loss value.
2. sieve purification system power-economizing method as claimed in claim 1, it is characterized in that, in described step one, electric heater preliminary set time value is 190 DEG C.
3. sieve purification system power-economizing method as claimed in claim 1, it is characterized in that, in described step 2, the design temperature of electric heater lowers 5 DEG C.
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| CN201510574606.0A CN105032114A (en) | 2015-09-10 | 2015-09-10 | Energy-saving method for molecular sieve purification systems |
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| CN201510574606.0A CN105032114A (en) | 2015-09-10 | 2015-09-10 | Energy-saving method for molecular sieve purification systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196885A (en) * | 2016-07-06 | 2016-12-07 | 山东京博众诚清洁能源有限公司 | A kind of air separation unit automatic energy-saving operation process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6402809B1 (en) * | 1999-09-03 | 2002-06-11 | L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Management of an air purification system with thermal regeneration |
| CN1436994A (en) * | 2002-02-07 | 2003-08-20 | 北京燕化高新技术股份有限公司 | Air-purifying method during separating air |
| CN203227409U (en) * | 2013-05-03 | 2013-10-09 | 智胜化工股份有限公司 | Regeneration control device of molecular sieve dehydration tower |
-
2015
- 2015-09-10 CN CN201510574606.0A patent/CN105032114A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6402809B1 (en) * | 1999-09-03 | 2002-06-11 | L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Management of an air purification system with thermal regeneration |
| CN1436994A (en) * | 2002-02-07 | 2003-08-20 | 北京燕化高新技术股份有限公司 | Air-purifying method during separating air |
| CN203227409U (en) * | 2013-05-03 | 2013-10-09 | 智胜化工股份有限公司 | Regeneration control device of molecular sieve dehydration tower |
Non-Patent Citations (4)
| Title |
|---|
| 姜长泓等: "《分子筛再生过程节能优化方案》", 《化学工程师》 * |
| 程志林: "《深冷空分专用分子筛吸附剂的研制及性能》", 《第八届全国工业催化技术及应用年会论文集》 * |
| 程玉芝: "分子筛吸附器的安全控制策略", 《深冷技术》 * |
| 陈亮: "空分装置纯化系统的节能控制系统的研究", 《长春工业大学优秀硕士论文》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196885A (en) * | 2016-07-06 | 2016-12-07 | 山东京博众诚清洁能源有限公司 | A kind of air separation unit automatic energy-saving operation process |
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Application publication date: 20151111 |