CN100427720C

CN100427720C - Heat carrier set in blowout prevention type

Info

Publication number: CN100427720C
Application number: CNB031600565A
Authority: CN
Inventors: 袁忠勋
Original assignee: Sinopec Engineering Inc; China Petrochemical Corp
Current assignee: Sinopec Engineering Inc
Priority date: 2003-09-26
Filing date: 2003-09-26
Publication date: 2008-10-22
Anticipated expiration: 2023-09-26
Also published as: CN1601197A

Abstract

The present invention relates to an anti-blowout heat carrier device which comprises a heat carrier tank (1), an oil-steam separating tank (2), an oil-steam outlet pipe (3), an oil return pipe (4) and a steam emptying pipe (5), wherein the oil-steam outlet pipe (3) is connected with a hole (6) arranged at the lower part of the heat carrier tank (1) through a hole (8) arranged on the upper end of the oil-steam separating tank (2), and the hole (8) can make a heat carrier enter the oil-steam separating tank (2) in a tangential line mode from an oil-steam outlet pipe (3) through the hole (6) arranged at the upper part of the heat carrier tank (1). Heat carrier oil rotates along the inner wall of the oil-steam separating tank and flows downwards under the action of centrifugal force and gravitational force, and simultaneously, the heat carrier oil is separated from steam. Thereby, blowout can be prevented when the bumping of the heat carrier occurs, and the safety production of petrochemical devices can be ensured.

Description

A kind of anti-heat transfer medium device of spraying and spoiling over

Technical field

The present invention relates to improvement to a kind of heat transfer medium heating system in the petrochemical process.

Background technology

Usually use heat transfer medium (claiming to lead oil generation again) to do in petrochemical process and add hot media, heating other needs heated processing medium.As shown in Figure 3, the heat transfer medium jar 1a of existing activities is the vertical tank of atmospheric operation, is provided with the evacuation port 2a of direct row's atmosphere at the top of jar.Heat transfer medium pumps from the heat transfer medium jar through heat transfer medium pump 3a, sends into heating furnace 4a and is heated to certain temperature, and A is a fuel; And then sending into each heater 5a heating process medium, 6a is a voltage-controlled valve, is circulated back to again in the heat transfer medium jar at last.Because of heat transfer medium generally is diesel oil or the higher oil product of other heat capacity, contain a certain amount of moisture content (containing saturation water at least) under normal conditions.In operating process, when the heat transfer medium temperature in the heat transfer medium jar reaches the vapourizing temperature (about 104 ℃) of water under the field condition, moisture content in the heat transfer medium is vaporized suddenly, volume expands suddenly, carry a large amount of heat transfer medium from the evacuation port heat transfer medium jar of gushing out, in the petroleum chemical industry " bumping " of this phenomenon heat transfer medium.When " bumping " took place, a large amount of heat transfer medium sprayed suddenly, interrupt normal operation, and especially serious is the life security that threatens operating personnel, and contaminated environment.Because heat transfer medium unavoidably contains moisture content, and its serviceability temperature substantially all is higher than the vapourizing temperature of water, so " bumping " of heat transfer medium often takes place, becomes a safety problem that presses for solution.

Patent related to the present invention by retrieval has three pieces, wherein CN2278182Y is a kind of novel inner-cooled rectifier unit, comprise condensation collection and thermal evaporation two parts, the heating muff heating is partly adopted in thermal evaporation, condensation portion is provided with inside and outside cooler, adopt condensing mode to separate the vapour-liquid phase, two parts are linked to be a tank body; CN1157396A is a kind of new solution of improving that gas water heater of mulberry, adopts pressure balance mode separate vapour and water, and equipment is incorporate case structure; CN2475016Y is a kind of novel balance pipe that is difficult for bumping and suck-back, generally is used for chemical laboratory.

More than three pieces of relevant patents and centrifugal force that following the present invention adopts add gravity and separate vapour-liquid technology, split-type structural, application all have fundamental difference mutually.

Summary of the invention

Purpose of the present invention is exactly by improving the structure of existing heat transfer medium jar; prevent that heat transfer medium sprays when " bumping " takes place heat transfer medium from the heat transfer medium jar; with the normal running of assurance heating system, and protection operating personnel's life security, pollution prevented to environment.

For achieving the above object, the technical solution used in the present invention is: set up the oil gas centrifugal separation system on existing conventional heat transfer medium jar, constitute the heat transfer medium device that a kind of anti-" bumping " sprays and spoils over.This device comprises heat transfer medium jar, oily vapour knockout drum, oily vapor outlet pipe, oil return pipe and water vapour evacuated tube.Wherein oily vapor outlet pipe is connected with oily vapour knockout drum through the outlet perforate of the oily vapor outlet pipe on oily vapour knockout drum top, and this perforate can make heat transfer medium enter oily vapour knockout drum from oily vapor outlet pipe with tangential way through the inlet drilling of the oily vapor outlet pipe on heat transfer medium jar top.Under the effect of centrifugal force and gravity, heat medium oil flows downward along oily vapour knockout drum inwall rotation, separates with water vapour simultaneously, sprays and spoils over thereby can prevent to produce when " bumping " takes place heat transfer medium, guarantees the safety in production of petrochemical plant.

This anti-heat transfer medium device of spraying and spoiling over provided by the invention can effectively guarantee the normality and the safety of heating system operation, and can prevent the pollution to environment.Be highly suitable for petrochemical industry.

Below in conjunction with the drawings and specific embodiments the present invention is done explanation in further detail.

Description of drawings

Fig. 1 is the heat transfer medium device front view that anti-" bumping " sprays and spoils over;

Fig. 2 is the heat transfer medium device vertical view that anti-" bumping " sprays and spoils over;

Fig. 3 is existing heat transfer medium heating system flow chart.

The specific embodiment

As depicted in figs. 1 and 2, the present invention sets up oily vapour centrifugal separation system on existing conventional heat transfer medium jar 1.This system comprises centrifugal oily vapour knockout drum 2, oily vapor outlet pipe 3, oil return pipe 4 and water vapour evacuated tube 5.Oil vapour knockout drum 2 is positioned at the top of heat transfer medium jar 1, by oily vapor outlet pipe 3 and oil return pipe 4 oily vapour knockout drum 2 and heat transfer medium jar 1 is fused.Wherein oily vapor outlet pipe 3 is connected with the inlet drilling 6 of the oily vapor outlet pipe on heat transfer medium jar 1 top through the outlet perforate 8 of the oily vapor outlet pipe of oily vapour knockout drum 2 upper ends, and the outlet perforate 8 of oily vapor outlet pipe can make heat transfer medium enter oily vapour knockout drum 2 from oily vapor outlet pipe 3 with tangential way through the inlet drilling 6 of the oily vapor outlet pipe on heat transfer medium jar 1 top; The bottom of wherein oily vapour knockout drum 2 is connected by oil return pipe 4 with the top of heat transfer medium jar 1.The top of oil vapour knockout drum 2 is vertical and cylindrical, and the bottom is conical, and cone angle is 30～60 degree; Oil vapour knockout drum 2 tops have water vapour evacuated tube 5, water vapour evacuated tube 5 is deep in the oily vapour knockout drum 2 through oily vapour knockout drum 2 top drillings 10, and the height of its mouth of pipe in jar is lower than the height of outlet perforate 8 that oily vapor outlet pipe 3 enters the oily vapor outlet pipe of oily vapour knockout drum 2; Oil vapour knockout drum 2 lower part outlets 9 are communicated with oil return pipe 4, and oil return pipe 4 extend into bottom in the heat transfer medium jar 1 through heat transfer medium jar 1 top drilling 7.The perforate 11 of heat transfer medium jar 1 is the heating medium inlet, and the perforate 12 of heat transfer medium jar 1 bottom is a heating medium outlet, and the perforate 14 and the perforate 13 of heat transfer medium jar 1 and oily vapour knockout drum 2 are manhole.

In the heating system operation process, when the temperature of heat transfer medium rose to the vapourizing temperature (about 104 ℃) of water, the moisture content in the heat transfer medium jar 1 was vaporized suddenly, and volume expands suddenly, and " bumping " of heat transfer medium promptly takes place.At this moment, water vapour carries heat medium oil and enters oily vapour knockout drum 2 through the outlet perforate 8 of oily vapor outlet pipe with tangential direction from the oily vapor outlet pipe 3 of heat transfer medium jar, under the effect of centrifugal force and gravity, heat medium oil flows downward along oily vapour knockout drum 2 inwalls rotation, separates with water vapour simultaneously.Get back in the heat transfer medium jar 1 by oil return pipe 4 by the heat medium oil that gravity flows downward; Isolated water vapour is discharged by water vapour evacuated tube 5.Like this, when " bumping " takes place in heat transfer medium, heat medium oil just can be not directly with the water vapour heat transfer medium jar 1 of gushing out, and the water vapour of vaporization also can be discharged smoothly by the water vapour evacuated tube 5 on the oily vapour knockout drum 2.Therefore guarantee system's normal running, and protected operating personnel's life security, and prevented contaminated environment.

Petrochemical industry aromatic extraction unit for 400,000 tons/year in a cover, after the heat transfer medium jar of its heating system adopts the present invention, go into operation at every turn and can reduce about about 10 tons heat transfer medium loss, 4～8 hours curtailments of operation, go into operation reduces to lose about 30～600,000 yuan at every turn.Most importantly guaranteed the safety of operation, eliminated pollution environment.

Claims

1. anti-heat transfer medium device of spraying and spoiling over, include heat transfer medium jar (1), it is characterized in that heat transfer medium jar (1) is provided with oily vapour centrifugal separation system, this system comprises oily vapour knockout drum (2), oily vapor outlet pipe (3), oil return pipe (4) and water vapour evacuated tube (5); Described oily vapour knockout drum (2) is positioned at the top of heat transfer medium jar (1), by oily vapor outlet pipe (3) and oil return pipe (4) oily vapour knockout drum (2) and heat transfer medium jar (1) are fused, wherein oily vapor outlet pipe (3) is connected with the inlet drilling (6) of the oily vapor outlet pipe on heat transfer medium jar (1) top through the outlet perforate (8) of the oily vapor outlet pipe of oily vapour knockout drum (2) upper end, and the outlet perforate (8) of oily vapor outlet pipe can make heat transfer medium enter oily vapour knockout drum (2) from oily vapor outlet pipe (3) with tangential way through the inlet drilling (6) of the oily vapor outlet pipe on heat transfer medium jar (1) top; The bottom of wherein oily vapour knockout drum (2) is connected by oil return pipe (4) with the top of heat transfer medium jar (1); Oil vapour knockout drum (2) top has water vapour evacuated tube (5).

2. heat transfer medium device according to claim 1, the top that it is characterized in that described oily vapour knockout drum (2) is vertical and cylindrical, and the bottom is conical, and cone angle is 30～60 degree.

3. heat transfer medium device according to claim 1, it is characterized in that described water vapour evacuated tube (5) is deep into the jar from the top drilling (10) of oily vapour knockout drum (2), the height of its mouth of pipe in jar is lower than the height of outlet perforate (8) that oily vapor outlet pipe (3) enters the oily vapor outlet pipe of oily vapour knockout drum (2).

4. heat transfer medium device according to claim 1 is characterized in that described oily vapour knockout drum (2) lower part outlet (9) is communicated with oil return pipe (4), and the perforate (7) of oil return pipe (4) through heat transfer medium jar (1) top extend into the bottom in the heat transfer medium jar (1).