CN102776033A - Coke oven gas purifying process adopting closed-loop air cooled circulating water to cool high-temperature media - Google Patents
Coke oven gas purifying process adopting closed-loop air cooled circulating water to cool high-temperature media Download PDFInfo
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- CN102776033A CN102776033A CN2012102792415A CN201210279241A CN102776033A CN 102776033 A CN102776033 A CN 102776033A CN 2012102792415 A CN2012102792415 A CN 2012102792415A CN 201210279241 A CN201210279241 A CN 201210279241A CN 102776033 A CN102776033 A CN 102776033A
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Abstract
The invention relates to a coke oven gas purifying process adopting closed-loop air cooled circulating water to cool high-temperature media. The coke oven gas purifying process is characterized in that circulating water for cooling high-temperature media adopts a closed-loop air cooling manner in the coke oven gas purifying process, that is, a circulating cooling water cooler is internally provided with a cooling water connecting pipeline, the cooling water connecting pipe, a circulating cooling water supply pipeline, a cooling water pipeline in a coke oven gas purifying unit, and a circulating cooling water return pipeline form a closed-loop circulating cooling water pipeline, cooling water in the circulating cooling water cooler is cooled with air, and the consumption of circulating water of an open circulating water cooling system is reduced. The process can be used for cooling high-temperature media in the upper section of a primary cooler, a dephlegmator at the top of a residual ammonia water ammonia still, and a condensation cooler at the top of a crude benzol distillation tower. The process can greatly reduce evaporated quantity of water and discharge of sewage and particularly can greatly lower water consumption of coking enterprises in areas short of water resources.
Description
Technical field
The present invention relates to a kind of fine purification technique for coke oven gas that uses closed circuit air cooling recirculated water cooling high-temperature medium; This technology is applied to evaporated quantity of water and the water amount of blowdown that the coke-oven plant can significantly reduce the open cycle water cooling system, satisfies the requirement of coking industry water-saving and emission-reducing.
Background technology
In the prior art, the conventional recycled water cooling process of coal chemical enterprise adopts the open cycle water cooling system, and is as shown in Figure 1.Recirculated water has large quantity of moisture and is evaporated in the air contacting cooling with air when; And salts contg can constantly increase in the recirculated water; Be the concentration of salt in the Control Circulation water, need continuous blow-down part recirculated water, therefore must constantly replenish new water in order to keep the stable of recirculated water total amount.
Regional water resourcess such as China North China, northwest are rare, and the coal chemical enterprise under this specified conditions tends to pay very big circulating cooling make-up water cost.Owing to receive in the technological process restriction, and be not suitable for changing the recirculated water cooling into air cooling closed circuit cooling fully to the recirculated cooling water supply water temperature.Therefore; Through the analysis that needs refrigerative medium temperature and cooling thereof to require to each unit of gas purification; Changing the cooling of part recirculated water into air cooling closed circuit cooling, reduce the evaporated quantity of water and the water amount of blowdown of open cycle water cooling system significantly, will be effective water-saving and emission-reducing solution.
Summary of the invention
The purpose of this invention is to provide a kind of fine purification technique for coke oven gas that uses closed circuit air cooling recirculated water cooling high-temperature medium; This technology can significantly reduce the evaporated quantity of water and the water amount of blowdown of circulating water cooling system; Particularly for the rare area of water resources, coal chemical enterprise can reduce the water cost greatly.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
Use the fine purification technique for coke oven gas of closed circuit air cooling recirculated water cooling high-temperature medium; It is characterized in that; In fine purification technique for coke oven gas; The recirculated water that is used for the cooling down high-temperature medium adopts closed circuit air cooled mode, promptly in the recirculated cooling water water cooler, is provided with the water coolant connecting tube, and the cooling water pipeline in this water coolant connecting tube, recirculated cooling water water supply pipeline, the coke oven gas purification unit, cooling water return pipeline constitute the closed cycle cooling water pipeline; Water coolant in the recirculated cooling water water cooler adopts air cooling, has reduced the water loss that the recirculated water evaporation is caused in the open cycle water cooling system.
This technology can be used for the cooling of high-temperature medium in primary cooler epimere, remained ammonia ammonia still process cat head reduction appts., the crude benzol distillation distillation tower overhead condensation water cooler.
Described recirculated cooling water water cooler provides 30～55 ℃ recirculated cooling water.
According to the requirement of technological process to circulating water temperature, on recirculated cooling water water cooler internal cooling water connecting tube, be provided with radiator element, can on radiator element, spray water as required or not spray water.
Compared with prior art, the invention has the beneficial effects as follows:
This technology adopts closed circuit air cooling water quench through in each unit of gas purification, filtering out the part high-temperature medium.Under the prerequisite that guarantees the high-temperature medium cooling performance, significantly reduced the recirculated water consumption of open cycle water cooling system, reduce the evaporated quantity of water and the water amount of blowdown of open cycle water cooling system effectively.
Description of drawings
Fig. 1 is to use the fine purification technique for coke oven gas schema of open air cooling recirculated water cooling high-temperature medium;
Fig. 2 is to use the fine purification technique for coke oven gas schema of closed circuit air cooling recirculated water cooling high-temperature medium.
Embodiment
The present invention is through carrying out combing to the gas purification whole process, filter out needing the refrigerative high-temperature medium, and classifies according to its temperature requirements to water coolant and to gather.The closed circuit air cooler recirculated water of the unified employing of water coolant of high-temperature mediums such as primary cooler epimere, remained ammonia ammonia still process cat head reduction appts., crude benzol distillation distillation tower overhead condensation water cooler is provided.And be theoretical basis with this pattern, unified planning, design cycle water cooling system realize reducing the purpose of open cycle water cooling system recirculated water steam output and water amount of blowdown.
See Fig. 2; Use the fine purification technique for coke oven gas of closed circuit air cooling recirculated water cooling high-temperature medium; In fine purification technique for coke oven gas; The recirculated water that is used for the cooling down high-temperature medium adopts closed circuit air cooled mode; Promptly in the recirculated cooling water water cooler, be provided with the water coolant connecting tube; Cooling water pipeline (numbering C among the figure) in this water coolant connecting tube (numbering A among the figure), recirculated cooling water water supply pipeline (numbering B among the figure), the coke oven gas purification unit, cooling water return pipeline constitute closed cycle cooling water pipeline (numbering D among the figure), and the water coolant in the recirculated cooling water water cooler adopts air cooling, reduce the recirculated water consumption of open cycle water cooling system.This technology can be used for the cooling of high-temperature medium in primary cooler epimere, remained ammonia ammonia still process cat head reduction appts., the crude benzol distillation distillation tower overhead condensation water cooler.
The recirculated cooling water water cooler provides 30～55 ℃ recirculated cooling water, and water temp is 30-35 ℃ on the recirculated cooling water, and the recirculated cooling water leaving water temperature(LWT) is 45-55 ℃.According to the requirement of technological process to circulating water temperature, on recirculated cooling water water cooler internal cooling water connecting tube, be provided with radiator element, can on radiator element, spray water as required or not spray water.
The principal feature of this technology is according to the temperature requirements of high-temperature medium to water coolant; Recirculated cooling water is reasonably divided; Change the part recirculated cooling water into closed circuit air cooler circulation cooling, realize the purpose of the recirculated water steam output of reduction open cycle water cooling system.Compare with aqueous mode with conventional water coolant, this technology is more suitable for using at rare geographic coal chemical enterprises of regional water resources such as China North China, northwests, and the coal chemical enterprise water-saving and emission-reducing is had practical significance.
Claims (4)
1. use the fine purification technique for coke oven gas of closed circuit air cooling recirculated water cooling high-temperature medium; It is characterized in that; In fine purification technique for coke oven gas; The recirculated water that is used for the cooling down high-temperature medium adopts closed circuit air cooled mode, promptly in the recirculated cooling water water cooler, is provided with the water coolant connecting tube, and the cooling water pipeline (C) in this water coolant connecting tube (A), recirculated cooling water water supply pipeline (B), the coke oven gas purification unit, cooling water return pipeline constitute closed cycle cooling water pipeline (D); Water coolant in the recirculated cooling water water cooler adopts air cooling, has reduced the water loss that the recirculated water evaporation is caused in the open cycle water cooling system.
2. the fine purification technique for coke oven gas of the closed circuit air cooling recirculated water cooling of use according to claim 1 high-temperature medium; It is characterized in that this technology can be used for the cooling of high-temperature medium in primary cooler epimere, remained ammonia ammonia still process cat head reduction appts., the crude benzol distillation distillation tower overhead condensation water cooler.
3. the fine purification technique for coke oven gas of the closed circuit air cooling recirculated water cooling of use according to claim 1 high-temperature medium is characterized in that described recirculated cooling water water cooler provides 30～55 ℃ recirculated cooling water.
4. the fine purification technique for coke oven gas of the closed circuit air cooling recirculated water cooling of use according to claim 1 high-temperature medium; It is characterized in that; According to the requirement of technological process to circulating water temperature; On recirculated cooling water water cooler internal cooling water connecting tube, be provided with radiator element, can on radiator element, spray water as required or not spray water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102792415A CN102776033A (en) | 2012-08-07 | 2012-08-07 | Coke oven gas purifying process adopting closed-loop air cooled circulating water to cool high-temperature media |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102792415A CN102776033A (en) | 2012-08-07 | 2012-08-07 | Coke oven gas purifying process adopting closed-loop air cooled circulating water to cool high-temperature media |
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| CN102776033A true CN102776033A (en) | 2012-11-14 |
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| CN2012102792415A Pending CN102776033A (en) | 2012-08-07 | 2012-08-07 | Coke oven gas purifying process adopting closed-loop air cooled circulating water to cool high-temperature media |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628162A (en) * | 2018-11-12 | 2019-04-16 | 程相魁 | The super energy-saving method of hot gas cooling system |
Citations (5)
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| CN2633888Y (en) * | 2003-05-30 | 2004-08-18 | 江西必高生物质能有限公司 | Biological mass combustable gas generator |
| CN201463626U (en) * | 2009-02-24 | 2010-05-12 | 武汉中圣能源环保工程有限公司 | Closed air cooling circulation cooling water system |
| CN101822910A (en) * | 2010-04-21 | 2010-09-08 | 吴植仁 | Method for reclaiming water from dry flue gas of high dew point lignite |
| CN102435032A (en) * | 2011-12-01 | 2012-05-02 | 国家电网公司 | A kind of closed circulating water cooling device and method |
| CN102564160A (en) * | 2010-12-07 | 2012-07-11 | 北京蓝图工程设计有限公司 | Combination air cooler and circulating cooling water system based on same and method |
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2012
- 2012-08-07 CN CN2012102792415A patent/CN102776033A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2633888Y (en) * | 2003-05-30 | 2004-08-18 | 江西必高生物质能有限公司 | Biological mass combustable gas generator |
| CN201463626U (en) * | 2009-02-24 | 2010-05-12 | 武汉中圣能源环保工程有限公司 | Closed air cooling circulation cooling water system |
| CN101822910A (en) * | 2010-04-21 | 2010-09-08 | 吴植仁 | Method for reclaiming water from dry flue gas of high dew point lignite |
| CN102564160A (en) * | 2010-12-07 | 2012-07-11 | 北京蓝图工程设计有限公司 | Combination air cooler and circulating cooling water system based on same and method |
| CN102435032A (en) * | 2011-12-01 | 2012-05-02 | 国家电网公司 | A kind of closed circulating water cooling device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628162A (en) * | 2018-11-12 | 2019-04-16 | 程相魁 | The super energy-saving method of hot gas cooling system |
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Application publication date: 20121114 |