CN210645191U - High-efficient cooling system of strip tower side gas - Google Patents

High-efficient cooling system of strip tower side gas Download PDF

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Publication number
CN210645191U
CN210645191U CN201920933771.4U CN201920933771U CN210645191U CN 210645191 U CN210645191 U CN 210645191U CN 201920933771 U CN201920933771 U CN 201920933771U CN 210645191 U CN210645191 U CN 210645191U
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purified water
pipeline
water
side gas
cooler
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CN201920933771.4U
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Inventor
齐世森
李西春
王浩然
马海峰
徐鹏
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Dongying Lianhe Petrochemical Co ltd
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Dongying Lianhe Petrochemical Co ltd
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Abstract

The utility model relates to a high-efficient cooling system of strip tower side line gas. The technical scheme is as follows: the bottom of sewage stripper is connected to the water purification heat exchange system through the water purification pipeline, the water purification heat exchange system passes through pipe connection to water purification air cooling system, the water purification air cooling system passes through pipe connection to the water purification cooling ware, the water purification cooling ware passes through pipe connection to the water purification buffer tank, the water purification buffer tank passes through pipe connection to the water purification force (forcing) pump, the water purification forcing pump passes through the circulating water inlet line of pipe connection to side gas heat exchanger, the water purification forcing pump is connected to the atmospheric and vacuum electric desalting unit through the retrieval and utilization pipeline. The utility model has the advantages that: the utility model discloses purify water hydraulic pressure dynamic height, the velocity of flow is fast, is difficult for the scale deposit, and the flow is simple reasonable, and has the reserve flow of switching, consequently compares with traditional circulating water cooling system, is difficult for leading to cooler cold water pipe to block up, and the cooling effect is better, and practices thrift the circulating water use amount.

Description

High-efficient cooling system of strip tower side gas
Technical Field
The utility model relates to a strip tower that oil refining industry was used, in particular to strip tower side gas high-efficient cooling system.
Background
The acidic water stripping device for oil refining industry adopts a single-tower pressurized stripping side-stream ammonia extraction process. The side gas is extracted from the 17 th layer tray of the main stripping tower, and is cooled by a ammonia cooler and three-stage segregation after three-stage condensation cooling (the first stage is heat exchange cooling with raw material water, the second stage is circulating water cooling, and the third stage is circulating water cooling) and ammonia rich gas to obtain crude ammonia gas, and the crude ammonia gas is sent to an ammonia refining system. The installation position of the secondary cooler is 28 meters, the crude ammonia gas is cooled to 90 ℃ from 130 ℃ by circulating water, when the circulating water is used for cooling, the pressure of the circulating water sent to the position is low, the flow rate is slow, a cold water pipe bundle of the cooler is easy to block, and the cooling effect is poor. More serious cases lead to the down-time of the sewage plant.
Disclosure of Invention
The utility model aims at providing a high-efficient cooling system of strip tower side line gas to the above-mentioned defect that prior art exists, purifying water hydraulic pressure height, the velocity of flow is fast, is difficult for the scale deposit, and the flow is simple reasonable, and has the reserve flow of switching, compares with traditional circulating water cooling system, is difficult for leading to cooler cold water pipe to block up, and the cooling effect is better, and practices thrift the circulating water use amount.
The technical scheme is as follows: the side of the sewage stripping tower is connected to a side gas heat exchanger through a pipeline, side gas exchanges heat with raw material water through the side gas heat exchanger, the side gas heat exchanger is connected to a first-stage partial condenser through a pipeline, the bottom of the first-stage partial condenser is connected to a raw material tank through a first-stage condensate pipeline, the top of the first-stage partial condenser is connected to a second-stage circulating water cooler through a pipeline, the second-stage circulating water cooler is connected to a second-stage partial condenser through a pipeline, the bottom of the second-stage partial condenser is connected to a raw material tank through a second-stage condensate pipeline, the top of the second-stage partial condenser is connected to a third-stage circulating water cooler through a pipeline, the top of the third-stage partial condenser is connected to a crude ammonia pipeline, and the bottom of the third-stage partial condenser is connected to a raw material tank through, The water purification cooling ware, the water purification buffer tank, the water purification force (forcing) pump, the bottom of sewage stripper is connected to the water purification heat transfer system through the water purification pipeline, the water purification heat transfer system passes through the pipe connection to water purification air cooling system, the water purification air cooling system passes through the pipe connection to the water purification cooling ware, the water purification cooling ware passes through the pipe connection to the water purification buffer tank, the water purification buffer tank passes through the pipe connection to the water purification force (forcing) pump, the water purification force (forcing) pump passes through the circulating water inlet pipeline of pipe connection to side gas heat exchanger, the water purification force (forcing) pump passes through the pipe connection to oily sewage pipe network, the water purification force (forcing) pump is.
Preferably, the purified water pressurizing pump is connected to a circulating water inlet line of the secondary circulating water cooler through a pipeline.
Preferably, the purified water pressurizing pump is connected to a circulating water inlet line of the three-stage circulating water cooler through a pipeline.
Preferably, circulating water outlet pipelines of the side gas heat exchanger, the secondary circulating water cooler and the tertiary circulating water cooler are respectively connected to the atmospheric-vacuum electric desalting unit.
Preferably, the purified water heat exchange system comprises a plurality of purified water heat exchangers, and the plurality of purified water heat exchangers are connected in series.
Preferably, the purified water air cooling system comprises a plurality of groups of purified water air coolers, the plurality of groups of purified water air coolers are connected in parallel, and each group of purified water air coolers is provided with two purified water air coolers.
The utility model has the advantages that: compared with the traditional circulating water cooling system, the cooling water pipe of the cooler is not easy to be blocked, the cooling effect is better, and the consumption of circulating water is saved; additionally, the utility model discloses a purified water passes through the cooling, carries to side line gas heat exchanger, second grade circulating water cooler, tertiary circulating water cooler through purification water buffer tank, purification water force (forcing) pump, uses as the circulating water, and purification water force (forcing) pump purification water pressure height, and the velocity of flow is fast, is difficult for the scale deposit, and the purified water after the heat transfer is connected to atmospheric and vacuum electric desalting water injection respectively through circulating water outlet pipe line, reduces atmospheric and vacuum electric desalting unit energy consumption.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the construction of the recycle water line;
FIG. 3 is a schematic structural view of embodiment 1;
FIG. 4 is a schematic structural view of embodiment 2;
in the figure: the system comprises a sewage stripping tower 1, a side gas heat exchanger 2, a primary dephlegmator 3, a secondary circulating water cooler 4, a secondary dephlegmator 5, a tertiary circulating water cooler 6, a tertiary dephlegmator 7, a raw material tank 8, a purified water heat exchange system 9, a purified water air cooling system 10, a purified water cooler 11, a purified water buffer tank 12, a purified water pressure pump 13, a purified water pipeline 14, a circulating water inlet pipeline 15, an oil-containing sewage pipe network 16, a circulating water outlet pipeline 17, a recycling pipeline 18, a purified water heat exchanger 9.1 and a purified water air cooler 10.1.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1:
the utility model provides a high-efficient cooling system of stripper side gas, the side of sewage stripper 1 is through the pipe connection to side gas heat exchanger 2, the side gas passes through side gas heat exchanger 2 and exchanges heat with raw material water, side gas heat exchanger 2 is through the pipe connection to one-level partial condenser 3, the bottom of one-level partial condenser 3 is through one-level condensate line connection to raw material tank 8, the top of one-level partial condenser 3 is through pipe connection to second grade circulating water cooler 4, second grade circulating water cooler 4 is through pipe connection to second grade partial condenser 5, the bottom of second grade partial condenser 5 is through two condensate lines connection to raw material tank 8, the top of second grade partial condenser 5 is through pipe connection to tertiary circulating water cooler 6, tertiary circulating water cooler 6 is through pipe connection to tertiary partial condenser 7, the thick ammonia pipeline is connected to the top of tertiary partial condenser 7, the bottom of tertiary partial condenser 7 is through three condensate lines connection to raw material tank 8, its improvement is the utility model discloses still include purification water heat transfer system 9, purification water air cooling system 10, purification water cooler 11, purification water buffer tank 12, purification water force (forcing) pump 13, sewage stripping tower 1's bottom is connected to purification water heat transfer system 9 through purification water pipeline 14, purification water heat transfer system 9 passes through pipe connection to purification water air cooling system 10, purification water air cooling system 10 passes through pipe connection to purification water cooler 11, purification water cooler 11 passes through pipe connection to purification water buffer tank 12, purification water buffer tank 12 passes through pipe connection to purification water force (forcing) pump 13, purification water force (forcing) pump 13 passes through pipe connection to the circulating water inlet pipeline 15 of side gas heat exchanger 2, purification water force (forcing) pump 13 passes through pipe connection to oily sewage pipe network 16, purification water force (forcing) pump 13 is connected to normal decompression electric desalting unit through retrieval and utilization pipeline 18. The purified water at the bottom of the stripping tower exchanges heat with raw material water, is cooled to 40 ℃ by a purified water air cooler and a purified water cooler, passes through a purified water buffer tank, passes through a purified water pressure pump, and is partially sent to an atmospheric and vacuum electric desalting unit, and is partially sent to a circulating water pipeline of a side gas heat exchanger to be used as circulating waste water, so that the consumption of the circulating water is saved, the purified water after heat exchange is sent to the atmospheric and vacuum electric desalting unit, and the rest is discharged to an oil-containing sewage pipe network.
The purified water pressure pump is connected to a circulating water inlet pipeline 15 of the second-stage circulating water cooler 4 through a pipeline, the purified water air cooler and the purified water cooler are cooled to 40 ℃, and the purified water passes through the purified water buffer tank and is pumped to the circulating water pipeline of the second-stage circulating water cooler through the purified water pressure pump to be used as circulating waste water, so that the consumption of the circulating water is saved.
In addition, the purified water pressure pump is connected to a circulating water inlet pipeline 15 of the three-stage circulating water cooler 6 through a pipeline, and the purified water air cooler and the purified water cooler are cooled to 40 ℃, and are pumped to a circulating water pipeline of the second-stage circulating water cooler through the purified water buffer tank by the purified water pressure pump to be used as circulating water, so that the consumption of the circulating water is saved.
In addition, circulating water outlet pipelines 17 of the side gas heat exchanger 2, the secondary circulating water cooler 4 and the tertiary circulating water cooler 6 are respectively connected to the atmospheric and vacuum electro-desalting unit for atmospheric and vacuum electro-desalting water injection, so that energy consumption of the atmospheric and vacuum electro-desalting unit is reduced.
In addition, the purified water heat exchange system 9 comprises two purified water heat exchangers 9.1, the connection mode of the two purified water heat exchangers 9.1 is series connection, the two purified water heat exchangers 9.1 are a first purified water heat exchanger and a second purified water heat exchanger, the bottom of the sewage stripping tower 1 is connected to the first purified water heat exchanger through a purified water pipeline 14, the first purified water heat exchanger is connected to the second purified water heat exchanger through a pipeline, the second purified water heat exchanger is connected to the purified water air cooling system through a pipeline, and step-by-step heat exchange is carried out through the two purified water heat exchangers 9.1.
And, the purified water air cooling system 10 includes two sets of purified water air coolers 10.1, and two sets of purified water air coolers 10.1 connected mode are parallelly connected, and every group purified water air cooler 10.1 is equipped with two, through the cooling of two sets of purified water air coolers 10.1, the cooling is effectual, and is efficient.
Circulating water pipelines of the side gas heat exchanger 2, the second-stage circulating water cooler 4 and the third-stage circulating water cooler 6 are used as a standby flow, and circulating water can be injected into the side gas heat exchanger 2, the second-stage circulating water cooler 4 and the third-stage circulating water cooler 6 through the circulating water pipelines.
The utility model discloses purify water hydraulic pressure dynamic height, the velocity of flow is fast, is difficult for the scale deposit, and the flow is simple reasonable, and has the reserve flow of switching, consequently compares with traditional circulating water cooling system, is difficult for leading to cooler cold water pipe to block up, and the cooling effect is better, and practices thrift the circulating water use amount, the utility model discloses a purified water passes through the cooling, carries to side line gas heat exchanger, second grade circulating water cooler, tertiary circulating water cooler through purified water buffer tank, purified water force (forcing) pump, uses as the circulating water, and the purified water after the heat transfer is connected to atmospheric and vacuum electric desalting water injection respectively through circulating water outlet line, reduces atmospheric and vacuum electric desalting unit energy consumption.
Example 2:
the utility model provides a high-efficient cooling system of stripper side gas, the side of sewage stripper 1 is through the pipe connection to side gas heat exchanger 2, the side gas passes through side gas heat exchanger 2 and exchanges heat with raw material water, side gas heat exchanger 2 is through the pipe connection to one-level partial condenser 3, the bottom of one-level partial condenser 3 is through one-level condensate line connection to raw material tank 8, the top of one-level partial condenser 3 is through pipe connection to second grade circulating water cooler 4, second grade circulating water cooler 4 is through pipe connection to second grade partial condenser 5, the bottom of second grade partial condenser 5 is through two condensate lines connection to raw material tank 8, the top of second grade partial condenser 5 is through pipe connection to tertiary circulating water cooler 6, tertiary circulating water cooler 6 is through pipe connection to tertiary partial condenser 7, the thick ammonia pipeline is connected to the top of tertiary partial condenser 7, the bottom of tertiary partial condenser 7 is through three condensate lines connection to raw material tank 8, its improvement is the utility model discloses a purified water heat transfer system 9, purified water air cooling system 10, the water purification cooler 11, the water purification buffer tank 12, the water purification force (forcing) pump 13, the bottom of sewage stripper 1 is connected to the water purification heat transfer system 9 through water purification pipeline 14, water purification heat transfer system 9 passes through pipe connection to water purification air cooling system 10, water purification air cooling system 10 passes through pipe connection to water purification cooler 11, water purification cooler 11 passes through pipe connection to water purification buffer tank 12, water purification buffer tank 12 passes through pipe connection to water purification force (forcing) pump 13, water purification force (forcing) pump 13 passes through pipe connection to the circulating water inlet pipeline 15 of side gas heat exchanger 2, water purification force (forcing) pump 13 passes through pipe connection to oily sewage pipe network 16, water purification force (forcing) pump 13 is connected to the electricity desalination unit of atmospheric and vacuum through the retrieval and utilization pipeline. The purified water at the bottom of the stripping tower exchanges heat with raw material water, is cooled to 40 ℃ by a purified water air cooler and a purified water cooler, passes through a purified water buffer tank, passes through a purified water pressure pump, and is partially sent to an atmospheric and vacuum electric desalting unit, and is partially sent to a circulating water pipeline of a side gas heat exchanger to be used as circulating waste water, so that the consumption of the circulating water is saved, the purified water after heat exchange is sent to the atmospheric and vacuum electric desalting unit, and the rest is discharged to an oil-containing sewage pipe network.
The purified water pressure pump is connected to a circulating water inlet pipeline 15 of the second-stage circulating water cooler 4 through a pipeline, the purified water air cooler and the purified water cooler are cooled to 40 ℃, and the purified water passes through the purified water buffer tank and is pumped to the circulating water pipeline of the second-stage circulating water cooler through the purified water pressure pump to be used as circulating waste water, so that the consumption of the circulating water is saved.
In addition, the purified water pressure pump is connected to a circulating water inlet pipeline 15 of the three-stage circulating water cooler 6 through a pipeline, and the purified water air cooler and the purified water cooler are cooled to 40 ℃, and are pumped to a circulating water pipeline of the second-stage circulating water cooler through the purified water buffer tank by the purified water pressure pump to be used as circulating water, so that the consumption of the circulating water is saved.
In addition, circulating water outlet pipelines 17 of the side gas heat exchanger 2, the secondary circulating water cooler 4 and the tertiary circulating water cooler 6 are respectively connected to the atmospheric and vacuum electro-desalting unit for atmospheric and vacuum electro-desalting water injection, so that energy consumption of the atmospheric and vacuum electro-desalting unit is reduced.
In addition, the purified water heat exchange system 9 comprises three purified water heat exchangers 9.1, the connection mode of the three purified water heat exchangers 9.1 is in series connection, the three purified water heat exchangers 9.1 are first purified water heat exchangers, second purified water heat exchangers and third purified water heat exchangers, the bottom of the sewage stripping tower 1 is connected to the first purified water heat exchangers through purified water pipelines 14, the first purified water heat exchangers are connected to the second purified water heat exchangers through pipelines, the second purified water heat exchangers are connected to the third purified water heat exchangers through pipelines, the third purified water heat exchangers are connected to the purified water air cooling system through pipelines, the three purified water heat exchangers 9.1 exchange heat step by step, the heat exchange effect is good, and the temperature of purified water can be further reduced.
And, the purified water air cooling system 10 includes three purified water air coolers 10.1, and three purified water air cooler 10.1 connected mode of group are parallelly connected, and every purified water air cooler 10.1 of group is equipped with two, and three purified water air coolers 10.1 of group cool down, and the cooling effect is better, and efficiency is faster for the purified water air cooling speed.
The utility model has high purified water pressure, fast flow speed, no scaling, simple and reasonable flow and switching standby flow, thereby compared with the traditional circulating water cooling system, the purified water is not easy to cause the blockage of a cooler cold water pipe, has better cooling effect and saves the using amount of circulating water, the purified water of the utility model is conveyed to a side-line gas heat exchanger, a second-stage circulating water cooler and a third-stage circulating water cooler through a purified water buffer tank and a purified water pressure pump by cooling and is used as circulating water, the purified water after heat exchange is respectively connected to atmospheric and vacuum electro-desalting water injection through a circulating water outlet pipeline, the energy consumption of an atmospheric and vacuum electro-desalting unit is reduced, a purified water heat exchange system comprises three purified water heat exchangers which carry out heat exchange step by step, the heat exchange effect is good, the temperature of the purified water can be further reduced, and the purified water system comprises three groups of, the cooling effect is better, and efficiency is faster for the air cooling speed of the purified water.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modification according to the technical solution of the present invention belongs to the scope of the present invention as far as possible.

Claims (6)

1. A side of a sewage stripping tower (1) is connected to a side gas heat exchanger (2) through a pipeline, the side gas exchanges heat with raw material water through the side gas heat exchanger (2), the side gas heat exchanger (2) is connected to a first-stage partial condenser (3) through a pipeline, the bottom of the first-stage partial condenser (3) is connected to a raw material tank (8) through a first-stage condensate pipeline, the top of the first-stage partial condenser (3) is connected to a second-stage circulating water cooler (4) through a pipeline, the second-stage circulating water cooler (4) is connected to a second-stage partial condenser (5) through a pipeline, the bottom of the second-stage partial condenser (5) is connected to the raw material tank (8) through a second-stage condensate pipeline, the top of the second-stage partial condenser (5) is connected to a third-stage circulating water cooler (6) through a pipeline, and, the thick ammonia pipeline is connected at the top of tertiary partial condenser (7), and the bottom of tertiary partial condenser (7) is connected to head tank (8) through three condensate lines, characterized by: the device is characterized by further comprising a purified water heat exchange system (9), a purified water air cooling system (10), a purified water cooler (11), a purified water buffer tank (12) and a purified water pressure pump (13), wherein the bottom of the sewage stripping tower (1) is connected to the purified water heat exchange system (9) through a purified water pipeline (14), the purified water heat exchange system (9) is connected to the purified water air cooling system (10) through a pipeline, the purified water air cooling system (10) is connected to the purified water cooler (11) through a pipeline, the purified water cooler (11) is connected to the purified water buffer tank (12) through a pipeline, the purified water buffer tank (12) is connected to the purified water pressure pump (13) through a pipeline, the purified water pressure pump (13) is connected to a circulating water inlet pipeline (15) of the side gas heat exchanger (2) through a pipeline, and the purified water pressure pump (13) is, the purified water pressure pump (13) is connected to the normal-pressure and reduced-pressure electric desalting unit through a recycling pipeline (18).
2. The stripper side gas subcooling system as described in claim 1, further comprising: the purified water pressure pump is connected to a circulating water inlet pipeline (15) of the secondary circulating water cooler (4) through a pipeline.
3. The stripper side gas subcooling system as described in claim 1, further comprising: the purified water pressure pump is connected to a circulating water inlet pipeline (15) of the three-stage circulating water cooler (6) through a pipeline.
4. The stripper side gas subcooling system as described in claim 2 or claim 3, further comprising: circulating water outlet pipelines (17) of the side gas heat exchanger (2), the secondary circulating water cooler (4) and the tertiary circulating water cooler (6) are respectively connected to the atmospheric and vacuum electric desalting unit.
5. The stripper side gas subcooling system as described in claim 1, further comprising: the purified water heat exchange system (9) comprises a plurality of purified water heat exchangers (9.1), and the plurality of purified water heat exchangers (9.1) are connected in series.
6. The stripper side gas subcooling system as described in claim 1, further comprising: the purified water air cooling system (10) comprises a plurality of groups of purified water air coolers (10.1), the connection modes of the plurality of groups of purified water air coolers (10.1) are in parallel connection, and two purified water air coolers (10.1) are arranged in each group.
CN201920933771.4U 2019-06-20 2019-06-20 High-efficient cooling system of strip tower side gas Active CN210645191U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920933771.4U CN210645191U (en) 2019-06-20 2019-06-20 High-efficient cooling system of strip tower side gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920933771.4U CN210645191U (en) 2019-06-20 2019-06-20 High-efficient cooling system of strip tower side gas

Publications (1)

Publication Number Publication Date
CN210645191U true CN210645191U (en) 2020-06-02

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Application Number Title Priority Date Filing Date
CN201920933771.4U Active CN210645191U (en) 2019-06-20 2019-06-20 High-efficient cooling system of strip tower side gas

Country Status (1)

Country Link
CN (1) CN210645191U (en)

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