CN211522135U - Device for heating rich oil and removing benzene by using waste heat of coke oven ascending pipe - Google Patents
Device for heating rich oil and removing benzene by using waste heat of coke oven ascending pipe Download PDFInfo
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- CN211522135U CN211522135U CN201921692276.5U CN201921692276U CN211522135U CN 211522135 U CN211522135 U CN 211522135U CN 201921692276 U CN201921692276 U CN 201921692276U CN 211522135 U CN211522135 U CN 211522135U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses a device for heating rich oil and removing benzene by using waste heat of a coke oven ascending pipe, which comprises a rich oil processor, a rich oil regenerator, a lean oil processor, a rich oil pipeline and a rich oil pump, wherein the rich oil processor, the rich oil regenerator and the lean oil processor are sequentially connected through oil pipes, and the rich oil processor is used for carrying out heat exchange distillation on the rich oil; the ascending tube of the coke oven is utilized to heat the rich oil, thereby overcoming the defect that a large amount of steam and coal gas are consumed in the using process of the traditional tubular furnace and medium-pressure steam, and achieving the purposes of saving energy, reducing consumption and lowering the temperature of raw gas; the heating of the rich oil by the coke oven ascending pipe does not use the traditional tubular furnace, thereby avoiding the accident of atmospheric pollution caused by incomplete combustion of coal gas and realizing environment-friendly production.
Description
Technical Field
The utility model belongs to the field of coal coking industry equipment, in particular to a device for heating rich oil and debenzolizing by using waste heat of a coke oven riser.
Background
At present, the benzene removal process of heating rich oil by a tubular furnace or heating rich oil by medium-pressure steam is adopted in most of the benzene removal processes of the coking plants in China, when the traditional process of heating the rich oil and removing the benzene by the tubular furnace is adopted, a large amount of coal gas can be wasted due to the fact that the tubular furnace uses the coal gas as a heating source, and meanwhile, due to incomplete combustion of the coal gas in the combustion process, a large amount of harmful substances such as sulfur dioxide, nitric oxide and the like are contained in discharged waste gas, so that the risk of air pollution is caused. When the medium-pressure steam is adopted to heat the rich oil, because a large amount of medium-pressure steam is needed to be used for heating and distilling the rich oil, a large amount of medium-pressure steam is consumed in production, and thus energy waste is caused. With the development of times, energy-saving, consumption-reducing and environment-friendly production become mainstream of the development of the currently introduced enterprises, so that the traditional tube furnace heating rich oil debenzolization process or the medium-pressure steam heating rich oil debenzolization process is gradually replaced by a novel energy-saving and environment-friendly debenzolization process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a novel environment-friendly device for heating the rich oil debenzolization process by the waste heat of the ascending pipe of the rich oil heating type coke oven.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: a device for heating rich oil and removing benzene by using waste heat of a coke oven ascending pipe comprises a rich oil processor for carrying out heat exchange distillation on the rich oil, a rich oil regenerator, a lean oil processor for carrying out heat exchange cooling benzene washing on the lean oil, a rich oil pipeline after heat exchange and a rich oil pump.
The utility model discloses a device for heating rich oil and removing benzene by using waste heat of a coke oven ascending pipe, wherein a rich oil processor comprises a coke oven ascending pipe for waste heat exchange, a rich oil pipeline and a benzene removing tower; the outlet of the coke oven ascending pipe is connected with the inlet of the rich oil pipeline, the first rich oil pipeline is connected with the inlet at the bottom of the regenerator, and the second rich oil pipeline is connected with the rich oil inlet of the debenzolization tower.
The utility model discloses a device for heating rich oil and debenzolizing by using waste heat of a coke oven ascending pipe, wherein an rich oil regenerator comprises a rich oil regeneration part and a medium-pressure steam pipeline, wherein the rich oil regeneration part is used for washing a small amount of rich oil; the oil-gas outlet of the rich oil regeneration part is connected with the oil-gas inlet of the debenzolization tower, and the bottom of the rich oil regeneration part is introduced into a medium-pressure steam pipeline.
The utility model discloses a device for heating rich oil and debenzolizing by using waste heat of a coke oven ascending pipe, wherein a lean oil processor comprises a lean and rich oil heat exchange part, a lean oil cooling part and a benzene washing tower; a lean oil inlet of the lean and rich oil heat exchange part is connected with a lean oil outlet of the debenzolization tower, a lean oil outlet is connected with an inlet of the lean oil cooling part, a rich oil inlet of the lean and rich oil heat exchange part is connected with a rich oil outlet of the benzene washing tower, and a rich oil outlet is connected with a rich oil inlet of a coke oven ascending pipe; an outlet of the lean oil cooling part is connected with a lean oil inlet of the benzene washing tower; the rich oil outlet of the benzene washing tower is connected with the inlet of the rich oil pump.
The utility model discloses an utilize device of rich oil debenzolization of coke oven tedge waste heat heating, including following step:
s1: sending rich oil sent out from a benzene washing section into a coke oven riser after heat exchange for secondary heat exchange, and then sending the rich oil into a debenzolization tower for distillation after heat exchange;
s2: introducing a small amount of rich oil into an oil washing regenerator for regeneration, and introducing medium-pressure steam from the bottom of the regenerator for steam stripping;
s3: oil gas is discharged from the top of the regenerator and then enters the bottom of the debenzolization tower to distill the heated rich oil, the rich oil entering the debenzolization tower is changed into lean oil after being distilled and is subjected to heat exchange through a lean and rich oil heat exchange part, then the rich oil enters a coke oven riser through a rich oil pipeline after heat exchange, and the lean oil is cooled by a lean oil cooling part and then continuously returns to a benzene washing tower for benzene washing:
the utility model discloses a device for heating rich oil and debenzolizing by using waste heat of a coke oven ascending pipe, step S1, the rich oil needs to exchange heat temperature to 170-190 degrees in the coke oven ascending pipe.
The utility model discloses a device for heating rich oil and debenzolizing by using waste heat of a coke oven ascending pipe, step S2, the rich oil introduced into a rich oil regenerator is 1.5-3%.
By adopting the technical scheme of the utility model, firstly, energy is saved, consumption is reduced, the oil-rich gas is heated by the coke oven riser, a large amount of steam and gas can be saved without using medium-pressure steam or a traditional tubular furnace, meanwhile, the high-temperature raw coke oven gas in the coke oven riser can fully exchange heat with the oil-rich gas, and the purpose of reducing the temperature of the raw coke oven gas is realized; secondly, the environment is protected, the oil is heated by utilizing the ascending pipe of the coke oven without using the traditional tubular furnace, the air pollution accident caused by incomplete combustion of coal gas is fundamentally avoided, and the environment-friendly production is realized; thirdly, heat exchange efficiency is high and not produce unnecessary waste water, the utility model discloses it is high to utilize coke oven tedge to heat rate of heating quick change thermal efficiency to rich oil, does not have many waste water, waste gas production in addition at whole debenzolization in-process.
The present invention will be described in more detail with reference to the accompanying drawings and examples.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic view of the present invention;
labeled as: 1. a coke oven riser; 2. a rich oil line; 3. a debenzolization tower; 4. an oil-rich regeneration section; 5. a medium pressure steam line; 6. a lean rich oil heat exchange part; 7. a lean oil cooling section; 8. a benzene washing tower; 9. an oil-rich pump; 10. a post heat exchange rich oil line;
Detailed Description
The following description of the embodiments of the present invention, with reference to the accompanying drawings, will be made in further detail to explain, for example, the shapes and structures of the components, the mutual positions and connection relationships among the components, the functions and working principles of the components, the manufacturing process, and the operation and use method of the components, so as to help those skilled in the art to understand the concept and technical solutions of the present invention more completely, accurately and deeply.
FIG. 1 is a schematic diagram of an apparatus for heating rich oil and removing benzene by using waste heat of a coke oven riser, and the apparatus for heating rich oil and removing benzene by using waste heat of the coke oven riser shown in FIG. 1 comprises a rich oil processor for performing heat exchange distillation on rich oil, a rich oil regenerator, a lean oil processor for performing heat exchange cooling benzene washing on lean oil, a rich oil pipeline 9 after heat exchange and a rich oil pump 10; the rich oil processor comprises a coke oven ascending pipe 1 for waste heat exchange, a rich oil pipeline 2 and a debenzolization tower 3; the rich oil regenerator comprises a rich oil regeneration part 4 for a small amount of rich wash oil and a medium pressure steam pipeline 5; the lean oil processor comprises a lean-rich oil heat exchange part 6, a lean oil cooling part 7 and a benzene washing tower 8;
when the device works, rich oil sent out from the final cooling benzene washing section is subjected to heat exchange and then sent into the ascending pipe 1 of the waste heat exchange coke oven for secondary heat exchange, and the rich oil enters the debenzolization tower 3 for distillation after the heat exchange is carried out to the temperature of 170-180 ℃; meanwhile, a small amount of 1.5-3% of rich oil is introduced into a rich oil regeneration part 4 for regeneration, a medium-pressure steam pipeline 5 is introduced from the bottom of the rich oil regeneration part 4 for steam stripping, oil steam is discharged from the top of the rich oil regeneration part 4 and then enters the bottom of a debenzolization tower 3 for distilling the heated rich oil, the rich oil entering the debenzolization tower 3 is distilled to become lean oil, a part of the rich oil enters a heat-exchanged rich oil pipeline 9 after the heat exchange of the lean oil and the rich oil is carried out by a lean oil heat exchange part 6, and the other part of the lean oil enters a lean oil cooling part 7 for cooling and then continuously returns to a benzene washing tower 8 for benzene washing.
By adopting the technical scheme of the utility model, firstly, energy is saved, consumption is reduced, the oil-rich gas is heated by the coke oven riser, a large amount of steam and gas can be saved without using medium-pressure steam or a traditional tubular furnace, meanwhile, the high-temperature raw coke oven gas in the coke oven riser can fully exchange heat with the oil-rich gas, and the purpose of reducing the temperature of the raw coke oven gas is realized; secondly, the environment is protected, the oil is heated by utilizing the ascending pipe of the coke oven without using the traditional tubular furnace, the air pollution accident caused by incomplete combustion of coal gas is fundamentally avoided, and the environment-friendly production is realized; thirdly, heat exchange efficiency is high and not produce unnecessary waste water, the utility model discloses it is high to utilize coke oven tedge to heat rate of heating quick change thermal efficiency to rich oil, does not have many waste water, waste gas production in addition at whole debenzolization in-process.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (4)
1. The device for heating the rich oil and removing benzene by using the waste heat of the coke oven ascending pipe is characterized by comprising a rich oil processor for carrying out heat exchange distillation on the rich oil, an oil-rich regenerator for regenerating a small amount of rich oil, a lean oil processor for carrying out heat exchange cooling benzene washing on the lean oil, a rich oil pipeline after heat exchange and an oil-rich pump, wherein the rich oil processor is sequentially connected through an oil pipe.
2. The device for heating the rich oil and removing the benzene by using the waste heat of the coke oven ascending pipe according to claim 1, wherein the rich oil processor comprises the coke oven ascending pipe for waste heat exchange, a rich oil pipeline and a benzene removing tower; the outlet of the coke oven ascending pipe is connected with the inlet of the rich oil pipeline, the first rich oil pipeline is connected with the inlet at the bottom of the regenerator, and the second rich oil pipeline is connected with the rich oil inlet of the debenzolization tower.
3. The device for heating the rich oil and removing benzene by using the waste heat of the ascending pipe of the coke oven as claimed in claim 1, wherein the rich oil regenerator comprises a rich oil regeneration part for a small amount of rich wash oil and a medium-pressure steam line; the oil-gas outlet of the rich oil regeneration part is connected with the oil-gas inlet of the debenzolization tower, and the bottom of the rich oil regeneration part is introduced into a medium-pressure steam pipeline.
4. The device for heating rich oil and removing benzene by using the waste heat of the ascending pipe of the coke oven as claimed in claim 1, wherein the lean oil processor comprises a lean and rich oil heat exchanging part, a lean oil cooling part and a benzene washing tower; a lean oil inlet of the lean and rich oil heat exchange part is connected with a lean oil outlet of the debenzolization tower, a lean oil outlet is connected with an inlet of the lean oil cooling part, a rich oil inlet of the lean and rich oil heat exchange part is connected with a rich oil outlet of the benzene washing tower, and a rich oil outlet is connected with a rich oil inlet of a coke oven ascending pipe; an outlet of the lean oil cooling part is connected with a lean oil inlet of the benzene washing tower; the rich oil outlet of the benzene washing tower is connected with the inlet of the rich oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921692276.5U CN211522135U (en) | 2019-10-11 | 2019-10-11 | Device for heating rich oil and removing benzene by using waste heat of coke oven ascending pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921692276.5U CN211522135U (en) | 2019-10-11 | 2019-10-11 | Device for heating rich oil and removing benzene by using waste heat of coke oven ascending pipe |
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| CN211522135U true CN211522135U (en) | 2020-09-18 |
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| CN201921692276.5U Active CN211522135U (en) | 2019-10-11 | 2019-10-11 | Device for heating rich oil and removing benzene by using waste heat of coke oven ascending pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776962A (en) * | 2019-10-11 | 2020-02-11 | 临涣焦化股份有限公司 | Device and method for heating rich oil and removing benzene by using waste heat of coke oven ascending pipe |
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2019
- 2019-10-11 CN CN201921692276.5U patent/CN211522135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776962A (en) * | 2019-10-11 | 2020-02-11 | 临涣焦化股份有限公司 | Device and method for heating rich oil and removing benzene by using waste heat of coke oven ascending pipe |
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