CN206444584U - A kind of condensate separation system of suitable polyester synthesis reaction - Google Patents

A kind of condensate separation system of suitable polyester synthesis reaction Download PDF

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Publication number
CN206444584U
CN206444584U CN201621269287.9U CN201621269287U CN206444584U CN 206444584 U CN206444584 U CN 206444584U CN 201621269287 U CN201621269287 U CN 201621269287U CN 206444584 U CN206444584 U CN 206444584U
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China
Prior art keywords
tower
flange
condensation separation
condensate
separation system
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CN201621269287.9U
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Chinese (zh)
Inventor
余桐柏
印卓
徐品杰
郭灼荣
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ZHAOQING FUTIAN CHEMICAL INDUSTRY Co Ltd
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ZHAOQING FUTIAN CHEMICAL INDUSTRY Co Ltd
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Abstract

The utility model provides a kind of condensate separation system of suitable polyester synthesis reaction, it includes the first condensation separation tower, the second condensation separation tower and PLC control system, filler is housed in the middle part of the first condensation separation tower, top is condenser and is provided with temperature sensor, and bottom has the first switching control valve;The second condensation separation tower is plate column, and its top is provided with pressure sensor;The first condensation separation tower and the second condensation separation tower are connected by pipeline, and the second switching control valve is provided with the pipeline;The first switching control valve, the second switching control valve, the temperature sensor and the pressure sensor are electrically connected with the PLC control system and are controlled by it respectively.The alcohol-water separation effect of condensate separation system of the present utility model more preferably, reduces alcohol volatilization loss amount, and reduce the COD value of waste water, it is not easy to fouling, clogging occur, has the advantages that SR is small.

Description

A kind of condensate separation system of suitable polyester synthesis reaction
Technical field
The utility model belongs to chemical machinery field, and in particular to a kind of condensation separation system reacted suitable for polyester synthesis System.
Background technology
Unsaturated polyester resin needs that water byproduct constantly is discharged into system in synthetic reaction process, to promote esterification React to forward direction progress.When reaction proceeds to certain phase, due to molecular weight of polyesters increase, system become very sticky it is thick, this Shi Tongchang using vacuumize or big nitrogen by the way of force moisture to be discharged.Vacuumizing dewatering type has certain limitation, e.g., Under the situations such as the high resin of the higher mold pressing resin of production molecular weight, high activity resin, appearance requirement, be just not suitable for using taking out Vacuum mode, now generally promotes system to be dehydrated using big nitrogen.The conventional still of current unsaturated polyester (UP) industry is one Determine the random packing post of height, this filled column is simple in construction, low cost, disclosure satisfy that general alcohol-water separation requirement.But this Random packing post is planted in for big nitrogen dewatering process, is had the disadvantage that:Air resistance is big;React later stage vapour quantity it is few when Wait, steam easily condenses on cold filler, causes part water to flow back into reactor;The acid that is mingled with steam, acid anhydrides or low point Sub- material condenses on filler, easily blocks filler.
Utility model content
The purpose of this utility model is that the technical problem to be solved is suitable for polyester synthesis reaction there is provided one kind for more than Condensate separation system.
Therefore, the utility model provides solution below:
A kind of condensate separation system of suitable polyester synthesis reaction, it includes the first condensation separation tower, the second condensation separation Filler is housed, top is condenser and is provided with temperature sensor in the middle part of tower and PLC control system, the first condensation separation tower, Bottom has the first switching control valve;The second condensation separation tower is plate column, and its top is provided with pressure sensor;It is described First condensation separation tower and the second condensation separation tower are connected by pipeline, and the second switching control valve is provided with the pipeline Door;The first condensation separation top of tower is provided with first gas outlet(discharge) flange, and bottom is provided with the first liquid outlet flange, and bottom is set There is steam inlet flange;The second condensation separation top of tower is provided with second gas outlet(discharge) flange, and bottom goes out provided with second liquid Mouth flange;The first switching control valve, the second switching control valve, the temperature sensor and the pressure sensing Device is electrically connected with the PLC control system and is controlled by it respectively.
According to condensate separation system of the present utility model, the filler is stainless steel vertical moire filler.
According to condensate separation system of the present utility model, the condenser on the top of the first condensation separation tower is cold for tubulation Condenser.
According to condensate separation system of the present utility model, the first switching control valve and second switching control valve Door is butterfly valve.
According to condensate separation system of the present utility model, the plate column is sieve-plate tower.
According to condensate separation system of the present utility model, the pipe bundle condenser is provided with cooling water inlet flange and cooling water Magnetic valve is equipped with outlet(discharge) flange, the cooling water inlet flange and the coolant outlet flange.It is highly preferred that the electricity Magnet valve is electrically connected with the PLC control system.
According to condensate separation system of the present utility model, the top of the second condensation separation tower is provided with alkali liquor inlet method Orchid, the alkali liquor inlet flange is provided with magnetic valve.It is highly preferred that the alkali liquor inlet flange and PLC control system electricity Connection.
Compared with prior art, the Alcohol-water separation effect of condensate separation system of the present utility model more preferably, reduces alcohol and waved Loss amount is sent out, and reduces the COD value of waste water.When condensate separation system of the present utility model is applied to big nitrogen dewatering process When, system is not easy fouling, clogging occur, has the advantages that SR is small.
Brief description of the drawings
Fig. 1 is the structural representation of condensate separation system of the present utility model.
Embodiment
The technical solution of the utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but this practicality It is new to be not limited to following examples.
First condensation separation
As shown in figure 1, the condensate separation system of suitable polyester synthesis reaction of the present utility model includes being used to react early stage Alcohol-water separation the first condensation separation tower (A towers) 100, the second condensation separation tower for reacting the big nitrogen water smoking in later stage (B towers) 200 and PLC (programmable logic controller (PLC)) control system.The middle part of A towers 100 is equipped with filler 1, and top condenses for tubulation Device 3 is simultaneously provided with temperature sensor 16, and bottom is provided with the first switching control valve (being preferably butterfly valve) 2.B towers 200 are that plate column is (excellent Elect sieve-plate tower as), its top is provided with pressure sensor 15;A towers 100 and B towers are connected by pipeline 9, and pipeline 9 is provided with the Two switching control valves (being preferably butterfly valve) 13.
Steam from reactor enters condensation separation system of the present utility model from the steam inlet flange 4 of the bottom of A towers 100 System.Phase Alcohol-water separation stage before the reaction, the first switching control valve (butterfly valve) 2 is opened, the second switching control valve (butterfly valve) 13 are closed, and steam enters structured packing 1, carry out condensation separation, and wherein steam is entered by the gas vent flange 6 at the top of A towers 100 Enter condenser (being not drawn into figure), the alcohol separated returns to reactor by the liquid outlet flange 5 of the bottom of A towers 100.Tubulation The bottom of condenser 3 is provided with cooling water inlet flange 7, and top is provided with coolant outlet flange 8, and cooling water is from cooling water inlet flange 7 enter pipe bundle condenser 3, are flowed out from coolant outlet flange 8.On cooling water inlet flange 7 and coolant outlet flange 8 respectively Provided with magnetic valve 18 and magnetic valve 19.The aperture of magnetic valve 18,19 is controlled according to the temperature of temperature sensor 16 height, so that Control enters the cooling water flow of pipe bundle condenser 3 to control to evaporate temperature.Reached to a certain degree in reaction, rank is dehydrated into big nitrogen Section, then close butterfly valve 2, opens butterfly valve 13, now steam (being mainly made up of nitrogen, steam, free acid, alcohol etc.) is by pipeline 9 Into B towers 200.The materials such as most of steam, free acid, alcohol in B towers 200 in steam are made by the condensation separation of sieve plate 11 With by the liquid outlet flange 12 of the bottom of B towers 200 into sour collector (not shown), nitrogen and a small amount of steam are by B towers The gas vent flange 10 at 200 tops enters condenser (not shown).The top of B towers 200 is provided with alkali liquor inlet flange 14, alkali Liquid inlet flange 14 is provided with pressure height in magnetic valve 17, the kettle measured according to pressure sensor 15, to control magnetic valve 17 Aperture, fresh water or sig water can be entered in tower by alkali liquor inlet flange 14, to strengthen the absorption to free acid, while Play a part of preventing sieve plate hole plug.
Magnetic valve 17,18,19, temperature sensor 16, pressure sensor 15, butterfly valve 2,13 respectively with PLC control system (not shown) is electrically connected, and is automatically controlled by it.
Compared with using the single column piece-rate system of random packing originally, alcohol-water of condensate separation system of the present utility model Separating effect more preferably, reduces alcohol volatilization loss amount, reduces the COD value of waste water.Work is dehydrated when the system is applied to big nitrogen During skill, system is not easy fouling, clogging occur, has the advantages that SR is small.

Claims (9)

1. a kind of condensate separation system of suitable polyester synthesis reaction, it is characterised in that including the first condensation separation tower, second cold Filler is housed, top is condenser and passed provided with temperature in the middle part of solidifying knockout tower and PLC control system, the first condensation separation tower Sensor, bottom has the first switching control valve;The second condensation separation tower is plate column, and its top is provided with pressure sensing Device;The first condensation separation tower and the second condensation separation tower are connected by pipeline, and are cut in the pipeline provided with second Change control valve;The first condensation separation top of tower is provided with first gas outlet(discharge) flange, and bottom is provided with the first liquid outlet method Orchid, bottom is provided with steam inlet flange;The second condensation separation top of tower is provided with second gas outlet(discharge) flange, and bottom is provided with the Two liquid outlet flanges;The first switching control valve, the second switching control valve, the temperature sensor and described Pressure sensor is electrically connected with the PLC control system and is controlled by it respectively.
2. condensate separation system according to claim 1, it is characterised in that:The filler is that stainless steel vertical moire is filled out Material.
3. condensate separation system according to claim 1, it is characterised in that:The top of the first condensation separation tower it is cold Condenser is pipe bundle condenser.
4. condensate separation system according to claim 3, it is characterised in that:The pipe bundle condenser is provided with cooling water inlet Magnetic valve is equipped with flange and coolant outlet flange, the cooling water inlet flange and the coolant outlet flange.
5. condensate separation system according to claim 1, it is characterised in that:The plate column is sieve-plate tower.
6. condensate separation system according to claim 1, it is characterised in that:The first switching control valve and described Two switching control valves are butterfly valve.
7. condensate separation system according to claim 1, it is characterised in that:The top of the second condensation separation tower is provided with Alkali liquor inlet flange, the alkali liquor inlet flange is provided with magnetic valve.
8. condensate separation system according to claim 7, it is characterised in that:The magnetic valve and the PLC control system Electrically connect and be controlled by it.
9. condensate separation system according to claim 7, it is characterised in that:The alkali liquor inlet flange is controlled with the PLC System processed is electrically connected and is controlled by it.
CN201621269287.9U 2016-11-21 2016-11-21 A kind of condensate separation system of suitable polyester synthesis reaction Active CN206444584U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621269287.9U CN206444584U (en) 2016-11-21 2016-11-21 A kind of condensate separation system of suitable polyester synthesis reaction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621269287.9U CN206444584U (en) 2016-11-21 2016-11-21 A kind of condensate separation system of suitable polyester synthesis reaction

Publications (1)

Publication Number Publication Date
CN206444584U true CN206444584U (en) 2017-08-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112691513A (en) * 2020-12-03 2021-04-23 湖北三宁化工股份有限公司 VOC waste gas pretreatment system and technology
CN115400449A (en) * 2022-07-26 2022-11-29 万华化学集团股份有限公司 Method for dehydrating alcohol-containing water vapor in polyester reaction kettle by utilizing dehydration tower

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112691513A (en) * 2020-12-03 2021-04-23 湖北三宁化工股份有限公司 VOC waste gas pretreatment system and technology
CN115400449A (en) * 2022-07-26 2022-11-29 万华化学集团股份有限公司 Method for dehydrating alcohol-containing water vapor in polyester reaction kettle by utilizing dehydration tower
CN115400449B (en) * 2022-07-26 2023-12-19 万华化学集团股份有限公司 Method for dehydrating alcohol-containing water-containing steam of polyester reaction kettle by utilizing dehydration tower

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