CN202450059U - High-temperature gas purifying and recovering unit - Google Patents
High-temperature gas purifying and recovering unit Download PDFInfo
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- CN202450059U CN202450059U CN2012200881208U CN201220088120U CN202450059U CN 202450059 U CN202450059 U CN 202450059U CN 2012200881208 U CN2012200881208 U CN 2012200881208U CN 201220088120 U CN201220088120 U CN 201220088120U CN 202450059 U CN202450059 U CN 202450059U
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Abstract
The utility model relates to a high-temperature gas purifying and recovering unit which comprises a cyclone dust collector (1), a chilling tower (2), a tar filter (3), a tar circulating pump (4), a heat exchanger (5), an electrical tar precipitator (6) and a tar storage tank (7). The cyclone dust collector is connected with a gas inlet (26) of the chilling tower (2). A top outlet of the chilling tower (2) is connected with an inlet of the electrical tar precipitator (6). A tar outlet (61) of the electrical tar precipitator (6) is connected with a first tar inlet (27) of the chilling tower (2). A bottom outlet of the chilling tower (2) is sequentially connected with the tar filter (3), and the tar circulating pump (4) and the heat exchanger (5). A first outlet (52) of the heat exchanger (5) is connected with a second tar inlet (28) of the chilling tower, and a second outlet (53) of the heat exchanger (5) is connected with the tar storage tank. The high-temperature gas purifying and recovering equipment solves the problems of low quality of tar recovered by similar technique, unsmooth operation in cold areas and underutilization of recovered heat and the like.
Description
Technical field
The utility model relates to a kind of high temperature coal gas purification recovery system.
Background technology
In the modern industry,, bring a lot of difficulties for the recovery of coal tar and effective utilization of heat because coal gas of high temperature contains a large amount of coal tar and dust simultaneously.The coal gas that gasification, coking, low-rank coal upgrading process are produced, typical temperature is higher, contains coal tar and dust; Before getting into lower procedure, need earlier high temperature coal gas purification to remove dust; Reclaim the coal tar of higher quality,, recycle heat as much as possible from energy-conservation angle.The gas purification process utilizes the method for tornado dust collector dedusting, washing to wash, cool off coal gas usually at present; Washing gas liquor and gas liquor are mixed the waste water that formation contains impurity such as tar, phenol, ammonia in a large number; Must earlier the oil in the water, phenol, ammonia etc. be separated, reclaim before this discharge of wastewater, just can reach the requirement of general method of wastewater treatment.Although part technology gas purification process does not have phenolic wastewater to produce at present, equipment is fairly simple, and the tar inferior quality that reclaims contains a large amount of coal dusts, does not have effective recycling coal gas of high temperature heat.Therefore, exploitation one cover technology, cleaning high-temp coal gas reclaims high-quality tar, effectively utilizes the coal gas heat, and process does not produce phenolic wastewater simultaneously, will very important meaning be arranged to gas purification.
Publication number CN101235322A; Denomination of invention: a kind of coal gasification cooling technique device; Wherein gas purification partly comprises tornado dust collector, electrical tar precipitator, electric fishing light oil device, air cooler, inter cooler and waste heat exchanger; Can improve gas quality, the water cut of coal gas can drop to 40g/Nm
3, and make middle dust of coal gas (hard coal/coke is done raw material) and tar content sum be not more than 50g/Nm
3, energy-saving and cost-reducing, reduce the pollution of dust, phenol water to environment.But technology more complicated, facility investment are failed from the generation of basic solution scavenging process phenol water, to the pollution of environment than higher.
Application publication number CN 101724472A; Denomination of invention: contain coal tar crude coal gas remove tar technology be a kind of contain the tar raw gas remove tar technology, solved the existing tar technology of removing and produced waste water, contaminate environment, facility investment and the high problem of production operation cost.Technical scheme is sent into quenching column and is washed, cools off from the coal tar counter current contact of water cooler at first containing coal tar crude coal gas, and the preliminary cooled raw gas of decoking gets into electrical tar precipitator by cat head to carry out sending into lower procedure after coal tar captures once more; Coal tar at the bottom of the quenching column is sent into quenching column again and is recycled after recycle pump is delivered to the water cooler cooling.This technology simply, does not consume fresh water, does not produce waste water fully yet, can also produce the coal tar sub product.But because the coal tar pour point is lower, the tar recycle system starts relatively difficulty; Particularly at severe cold areas, in operational process, Dust Capacity is bigger in the tar; Than being easier to block quenching column cloth device at night, filler etc., running maintenance is difficulty relatively; Simultaneously, a large amount of heats that fully effectively do not utilize recovery tar to contain.
The utility model content
The main drawback of existing Technology is: 1) adopt the water-washing method cooling to combine the technology of electrical tar precipitator, purify coal gas, such technology more complicated; Facility investment is than higher; Operation expense is high, fails from the generation of basic solution scavenging process phenol water, to the pollution of environment.2) adopt the tar washing process to purify coal gas, such technology, because the coal tar pour point is than higher, the tar recycle system starts relatively difficulty, particularly at severe cold areas; In operational process, Dust Capacity is bigger in the tar, than being easier to block quenching column cloth device at night, and filler etc., running maintenance is difficulty relatively, simultaneously, does not fully effectively utilize and reclaims a large amount of heats that tar contains.
The utility model provides a cover technology to contain coal tar and dust simultaneously to coal gas of high temperature, reclaims high-quality tar and effectively utilizes heat, reclaims tar thereby solve current most of technology; Produce a large amount of phenolic wastewater; Contaminate environment, complex technical process, facility investment is bigger; Thereby solve similar technology, it is not high to reclaim the tar quality, and the extremely frigid zones operation is not smooth, does not fully effectively utilize problems such as reclaiming heat.
The utility model is removed ash content in the coal gas through equipment such as tornado dust collector and tar strainers, improves the tar quality simultaneously; Through well heater at the bottom of the configuration Quench Tata, solve the problem that starts difficulty; Through interchanger a large amount of heats that tar contains are recycled.
The utility model relates to a kind of high temperature coal gas purification recovery system; Comprise tornado dust collector 1, quenching column 2, tar strainer 3, tar recycle pump 4, interchanger 5, electrical tar precipitator 6; Tar storage tank 7; Said tornado dust collector 1 are connected with quenching column 2 gas entries 26; The top exit of said quenching column 2 and electrical tar precipitator 6 inlets are connected, and the tar outlet 61 of said electrical tar precipitator 6 and first tar of quenching column 2 enter the mouth and 27 is connected, and the outlet at bottom of said quenching column 2 is connected with said tar strainer 3, tar recycle pump 4, interchanger 5 successively; First outlet 52 of said interchanger 5 is connected with second tar of quenching column 2 inlet 28, and second of said interchanger 5 exports 53 and is connected with tar storage tank 7.
Preferably, said quenching column 2 tops are provided with tower top temperature transmitter 21.
Preferably, said quenching column 2 bottoms are provided with column bottom temperature transmitter 23.
Preferably, said quenching column 2 bottoms are provided with liquidometer 22.
Preferably, said quenching column 2 bottoms are provided with well heater 24.
Preferably, the position of said electrical tar precipitator 6 is above quenching column.
Preferably, said interchanger 5 connects second tar inlet 28 of quenching column 2 through quenching column coal tar valve 25.
The advantage of the utility model is:
1 process sequence and mutual relationship are following:
1) the tornado dust collector outlet connects the quenching column gas inlet, and Quench Tata bed coke oil export links to each other with the tar filter inlet, and strainer, recycle pump and interchanger link to each other successively.
2) the quenching column gas exit links to each other with the electrical tar precipitator inlet.
3) between the equipment with pipe connection.
2 quenching columns bottoms is provided with well heater and TP, according to temperature variations, starts heating unit in real time, guarantee tower bed coke oil before startup the coal tar temperature more than pour point temperature.
3 electrical tar precipitator installation sites require above quenching column, and capturing tar can be back at the bottom of the tower through the mode of gravity reflux, no longer sets up liquid delivery device.
Description of drawings
Fig. 1 is the simple and easy schema of the utility model.
Nomenclature:
1---tornado dust collector
2---quenching column
21---the tower top temperature transmitter
22---liquidometer
23---the column bottom temperature transmitter
24---well heater
25---quenching column coal tar valve
26---the quenching column gas entry
27---quenching column first tar inlet
28---quenching column second tar inlet
3---the tar strainer
4---the tar recycle pump
5---interchanger
51---send the coal tar valve outside
52---well heater first outlet
53---well heater second outlet
6---electrical tar precipitator
61---the outlet of electrical tar precipitator tar
Embodiment
Describe technical process in detail below in conjunction with Fig. 1, but one skilled in the art will appreciate that following description should not be counted as the restriction to the protection domain of the utility model.
Equipment in the embodiment is conventional equipment, and this process system comprises following major equipment: tornado dust collector 1, quenching column 2, tar strainer 3, tar recycle pump 4, interchanger 5 and electrical tar precipitator 6.Concrete technological process is as shown in Figure 1:
With coal gas of high temperature (temperature is more than 360 ℃) input tornado dust collector 1; Dust about 80% is removed, and gets into quenching columns 2 through quenching column gas entry 26, and the circulation that gets into quenching column second tar inlet 28 is from the coal tar counter current contact of interchanger 5; More than the dew-point temperature that coal tar and dust are washed, temperature is cooled to water; Below the coal tar flash-point (105～145 ℃), generally be controlled between 76～95 ℃, wherein most of coal tar dissolves in the next coal tar of circulation and sinks to quenching column 2 bottoms; The coal gas that contains small coal tar by after the coal tar cooling washing gets into electrical tar precipitator 6 by quenching column 2 cats head; Coal tar in the coal gas is almost got off by whole captures, and the coal tar that captures is discharged from electric coke booster oil device tar outlet 61, gets into quenching column 2 by quenching column first tar inlet 27; Through gravity reflux to quenching column 2 bottoms, go out the clean gas product fed downstream operation of electrical tar precipitator 6; The coal tar that the coal tar that contains dust that quenching column 2 bottom wash obtain reaches from electrical tar precipitator 6 mixes the back temperature between 110～150 ℃, at first passes through tar strainer 3, removes most of coal dust in the coal tar; Obtain clean coal tar; After tar recycle pump 4 is sent into interchanger 5, be recycled the heat exchange of glycol/water solution and be cooled to below 75 ℃ cooled coal tar; Part goes out interchanger first outlet 52; Be used for quenching column 2 washing cooling coal gas, redundance is a coal-tar products, goes out interchanger second outlet 53 and is sent to 7 preservations of coal tar storage tank.
Embodiment:
With 300,000 tons of/year devices operation purification systems is example, is 380 ℃ coal gas of high temperature with temperature, purifies according to above-described technology, in tar storage tank 7, obtains coal-tar products and clean gas product.
The concrete parameter of said purifying treatment is: the dew point of water is 75 ℃; The coal tar pour point that initial trial run records is 40 ℃; Flash-point is 107 ℃, and therefore setting quenching column 2 overhead gas temperature outs is 78 ℃, and the mixed coal tar temperature is 115 ℃ at the bottom of the tower; Interchanger 5 Export Coal Tar temperature are 65 ℃, and the temperature of well heater 24 heating is 50 ℃.
The device of the utility model is removed ash content in the coal gas through equipment such as tornado dust collector and tar strainers, reduces the amount that gas dust falls into tar, thereby has improved the coal tar quality; Through well heater at the bottom of the configuration Quench Tata, solve the problem that starts difficulty; Through interchanger a large amount of heats that coal tar contains are recycled.
Claims (7)
1. high temperature coal gas purification recovery system; It is characterized in that; Comprise tornado dust collector (1), quenching column (2), tar strainer (3), tar recycle pump (4), interchanger (5), electrical tar precipitator (6); Tar storage tank (7), said tornado dust collector (1) are connected with quenching column (2) gas entry (26), and the top exit of said quenching column (2) is connected with electrical tar precipitator (6) inlet; The tar outlet (61) of said electrical tar precipitator (6) is connected with first tar inlet (27) of quenching column (2); The outlet at bottom of said quenching column (2) is connected with said tar strainer (3), tar recycle pump (4), interchanger (5) successively, and first outlet (52) of said interchanger (5) is connected with second tar inlet (28) of quenching column (2), and second outlet (53) of said interchanger (5) is connected with tar storage tank (7).
2. equipment as claimed in claim 1 is characterized in that, said quenching column (2) top is provided with tower top temperature transmitter (21).
3. equipment as claimed in claim 1 is characterized in that, said quenching column (2) bottom is provided with column bottom temperature transmitter (23).
4. equipment as claimed in claim 1 is characterized in that, said quenching column (2) bottom is provided with liquidometer (22).
5. like claim 1 or 3 described equipment, it is characterized in that said quenching column (2) bottom is provided with well heater (24).
6. equipment as claimed in claim 1 is characterized in that, the position of said electrical tar precipitator (6) is in quenching column (2) top.
7. equipment as claimed in claim 1 is characterized in that, said interchanger (5) connects quenching column (2) through quenching column coal tar valve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200881208U CN202450059U (en) | 2012-03-09 | 2012-03-09 | High-temperature gas purifying and recovering unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200881208U CN202450059U (en) | 2012-03-09 | 2012-03-09 | High-temperature gas purifying and recovering unit |
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| CN202450059U true CN202450059U (en) | 2012-09-26 |
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| CN2012200881208U Expired - Fee Related CN202450059U (en) | 2012-03-09 | 2012-03-09 | High-temperature gas purifying and recovering unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627411A (en) * | 2013-12-13 | 2014-03-12 | 湖南华银能源技术有限公司 | Recovery process for sensible heat and chilling cooling air of high-temperature semi-coke |
| CN103952187A (en) * | 2014-05-20 | 2014-07-30 | 湖南华银能源技术有限公司 | Two-section coal tar recovery system and method |
| CN104893763A (en) * | 2015-06-01 | 2015-09-09 | 佛山市国保节能环保技术有限公司 | Non-phenol water purifier |
| CN105969431A (en) * | 2016-07-01 | 2016-09-28 | 北京神雾环境能源科技集团股份有限公司 | Treatment system and method for pyrolysis oil and gas in new technique for producing calcium carbide |
| CN106047423A (en) * | 2016-07-01 | 2016-10-26 | 朱绍辉 | Low-rank coal low-temperature pyrolysis tar gas recycling equipment |
-
2012
- 2012-03-09 CN CN2012200881208U patent/CN202450059U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627411A (en) * | 2013-12-13 | 2014-03-12 | 湖南华银能源技术有限公司 | Recovery process for sensible heat and chilling cooling air of high-temperature semi-coke |
| CN103627411B (en) * | 2013-12-13 | 2015-06-03 | 湖南华银能源技术有限公司 | Recovery process for sensible heat and chilling cooling air of high-temperature semi-coke |
| CN103952187A (en) * | 2014-05-20 | 2014-07-30 | 湖南华银能源技术有限公司 | Two-section coal tar recovery system and method |
| CN103952187B (en) * | 2014-05-20 | 2016-05-11 | 湖南华银能源技术有限公司 | Two-part coal tar recovering system and recovery method |
| CN104893763A (en) * | 2015-06-01 | 2015-09-09 | 佛山市国保节能环保技术有限公司 | Non-phenol water purifier |
| CN104893763B (en) * | 2015-06-01 | 2021-11-02 | 佛山市国保环保节能科技有限公司 | Phenol-free water purifier |
| CN105969431A (en) * | 2016-07-01 | 2016-09-28 | 北京神雾环境能源科技集团股份有限公司 | Treatment system and method for pyrolysis oil and gas in new technique for producing calcium carbide |
| CN106047423A (en) * | 2016-07-01 | 2016-10-26 | 朱绍辉 | Low-rank coal low-temperature pyrolysis tar gas recycling equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUNAN HUAYIN ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: DATANG XIANYI TECHNOLOGY CO., LTD. Effective date: 20130530 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 410007 CHANGSHA, HUNAN PROVINCE TO: 410000 CHANGSHA, HUNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130530 Address after: 410000 Hunan province Changsha Furong Road No. 416 Hing prestige city B building room 2008 Patentee after: Hunan Huayin Energy Technology Co., Ltd. Address before: 410007 No. 3, No. 21, Hua Yinyuan District, 752 Middle Road, Changsha, Hunan, Shaoshan, 301 Patentee before: Hunan Datang Xianyi Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20200309 |
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| CF01 | Termination of patent right due to non-payment of annual fee |