CN1030602A - Purify the technology of naphthalene in the coke-oven gas - Google Patents
Purify the technology of naphthalene in the coke-oven gas Download PDFInfo
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- CN1030602A CN1030602A CN 88103451 CN88103451A CN1030602A CN 1030602 A CN1030602 A CN 1030602A CN 88103451 CN88103451 CN 88103451 CN 88103451 A CN88103451 A CN 88103451A CN 1030602 A CN1030602 A CN 1030602A
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- naphthalene
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- tar light
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Abstract
The invention provides a kind of novel process that purifies naphthalene in the coke-oven gas, this technology is with the gas purification naphthalene, washing oil takes off naphthalene, regeneration and three operation cancellations of gas final cold, merge into an operation, in process of cooling, spray coal gas with tar light oil, the naphthalene in the coal gas is purified in a series of like this processes that connect each other of cooling (sublimating)-dissolving-absorption.Technology is simply compact, and equipment is simple, does not need stand-by facilities, less investment.Therefore, be easy to promote, especially modernize and expand the existing factory and under the situation that does not influence production, to finish.
Description
The present invention relates to a kind of technology that purifies naphthalene in the coke-oven gas, belong to the Coal Chemical Industry production field.
The purifying problem of naphthalene is a problem that does not obtain fine solution for many years in coke-oven plant's coke-oven gas, and this problem is related to the ordinary production of phenalgin and even whole gas cleaning system.The technology of naphthalene in traditional purification coke-oven gas is to adopt the washing oil naphthalene washing process, and washing oil is washed naphthalene purification efficiency low (only about 40～60%), and Ammonic washing tower is easily stopped up by naphthalene, and the recovering condition of ammonia worsens, crude benzol distillation plant and coke oven water back heavy corrosion.In addition, contain the naphthalene washing oil and take off the naphthalene complex procedures, need set up in addition fully, and whole technology oil washing consumption amount is big.
The purpose of this invention is to provide a kind of novel process that purifies naphthalene in the coke-oven gas, this technology is without washing oil, do not need to contain the naphthalene washing oil dehydration, take off naphthalene and regenerating unit, operation is simplified, and is easy to control.
The present invention is achieved in that this process application tar light oil purifies the naphthalene in the coke-oven gas, and this technology comprises: the preparation of 1 tar light oil, 2 coal gas are washed naphthalene in whole cold.The tar light oil that uses derives from the phlegma of primary cooler in this technology, does not need outsourcing.The phlegma of primary cooler is delivered to the tar light oil separator, can isolate tar light oil, tar light oil is used for spraying at treating plant; The whole cold-peace of coal gas is washed naphthalene and is carried out simultaneously in treating plant, give cold section and the absorber portion for the treatment of plant are established the tar light oil shower nozzle respectively, coal gas contacts with tar light oil following current in treating plant, prevent to contain the undersaturated heating gas of naphthalene and contact, cause naphthalene to distil again and enter the possibility of coal gas with tar light oil.In process of cooling, spray coal gas with tar light oil, the naphthalene in the coal gas is purified in a series of like this processes that connect each other of cooling (sublimating)-dissolving-absorption.Purify the tar fog that back coal gas is carried under one's arms for pouncing on collection, be provided with after gas final cold is washed the naphthalene tower and pounce on day with fog, the coal gas of pouncing on behind the mist enters Ammonic washing tower.
Description of drawings:
Fig. 1 is the process flow sheet that tar light oil purifies naphthalene in the coal gas.
The 1-condensate pit; The 2-condensate pump;
3-tar light oil separator; 4-tar light oil medial launder;
5-replenishes the tar light oil pump; The 6-water cooler;
7-circulation tar light oil groove; The 8-circulating oil pump;
9-pounces on day with fog; The whole cold wash naphthalene of 10-tower;
The 11-mechanizeding ammonia clarifying groove; The 12-primary cooler;
The 13-gas blower; 13-tar light oil shower nozzle.
The present invention is described in detail below in conjunction with accompanying drawing:
The preparation process of tar light oil is exactly in fact the process from primary cooler phlegma separation of lighter tar.At first by means of condensate pump 2 phlegma by condensate pit 1 pumping over to tar light oil separator 3, borrow proportion different and separate at this tar light oil and condensation ammoniacal liquor, tar light oil proportion 1.15～1.16, be sunken to the separator bottom, condensation ammoniacal liquor then flows automatically to mechanizeding ammonia clarifying groove 11 by the separator top, and mixes with effuser ammoniacal liquor.Be sunken to the tar light oil of separator bottom, be pressed into tar light oil medial launder 4 continuously, arrive circulation tar light oil groove 7 with the pump continuous supplementation thus again by pipeline.
The whole cold-peace of coal gas purifies naphthalene and ties up to a transverse tube gas final cold and wash in the naphthalene tower 10 and carry out, whole cold wash naphthalene tower branch gives cold section and absorber portion, giving cold section and absorber portion, is respectively equipped with tar light oil shower nozzle 14, give cold section and be provided with a tar light oil shower nozzle, absorber portion is provided with two tar light oil shower nozzles.Coal gas imports from whole cold wash naphthalene tower top, makes it to contact with tar light oil following current in whole cold wash naphthalene tower, prevents to contain the undersaturated heating gas of naphthalene and contacts with tar light oil, causes naphthalene to distil again and enters the possibility of coal gas.Coal gas enters absorber portion through giving after being as cold as 25～27 ℃, continues to be cooled to 21～23 ℃ at absorber portion coal gas.Be to purify the naphthalene in the coal gas, spray tar light oil in the space circulation of giving between cold section and the absorber portion, the coal gas after the purification is derived from whole cold wash naphthalene tower lower part outlet.For pouncing on the tar fog carried under one's arms of collection coal gas, being provided with after gas final cold is washed the naphthalene tower and revolving fraction and pounce on day with fog 9, the coal gas of pouncing on behind the mist enters Ammonic washing tower.
Giving cold section, because gas temperature has dropped to below the dew point of naphthalene, in coal gas process of cooling after this, naphthalene is constantly sublimated from coal gas and is given birth to, for preventing that naphthalene is deposited on the resistance that influence is conducted heat and increase coal gas passes through on the cooling tube wall, and in order to strengthen the absorption of naphthalene, therefore give cold section and the absorber portion at whole cold wash naphthalene tower is respectively equipped with triple helical tar light oil shower nozzle 14.
For not too high in the tar light oil that keeps circulating, the stable naphthalene amount that contains, tar light oil by medial launder 4 usefulness supplemental oil pump 5 through water cooler 6, mend the tar light oil groove 7 of going into to circulate continuously, with recycle pump 8 the tar light oil pumping over is washed giving cold section and absorber portion and circulate in the naphthalene tower to gas final cold thus, for keeping the balance of tar light oil amount in the circulating oil tank, arm through the outlet pipe of recycle pump 8, sending into mechanizeding ammonia clarifying groove 11 continuously with the turning oil that enters recycle system equivalent (comprising a part of water of condensation), mix with effuser tar at this tar light oil, behind separating and dehydrating, become commercial coal tar.
The present invention compares with traditional handicraft, because the gas purification naphthalene, washing oil takes off naphthalene, regeneration and three operation cancellations of gas final cold and merges into an operation, technology is simply compact, and equipment is few, does not need equipment equipment, output investment ratio traditional handicraft saving at least 50%; Stable operation is easy to grasp, and purifies the efficient height (can reach about 80%) of naphthalene; Not limited by raw material sources, the self-produced tar light oil in coke-oven plant is self-sufficient and achieve a surplus fully. Therefore. be easy to promote, especially modernize and expand the existing factory and can in the situation that does not affect production, finish.
Claims (4)
1, a kind of technology that purifies naphthalene in the coke-oven gas, it is characterized in that: this technology comprises:
The preparation of a tar light oil;
B coal gas is washed naphthalene in whole cold.
2, the technology of naphthalene in the purification coke-oven gas according to claim 1, it is characterized in that: the whole cold-peace of coal gas is washed naphthalene and is carried out simultaneously in treating plant, coal gas contacts with tar light oil following current in treating plant 10, prevent to contain the undersaturated heating gas of naphthalene and contact, cause naphthalene to distil again and enter the possibility of coal gas with tar light oil.
3, according to the technology of naphthalene in claim 1, the 2 described purification coke-oven gas, it is characterized in that: give cold section and absorber portion in treating plant 10 are respectively equipped with tar light oil shower nozzle 14, spray simultaneously.
4, according to the technology of naphthalene in claim 1, the 2 described purification coke-oven gas, it is characterized in that: after gas final cold is washed the naphthalene tower, be provided with and pounce on day with fog 9 to pounce on the tar fog that collection coal gas is carried under one's arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103451 CN1016182B (en) | 1988-06-04 | 1988-06-04 | Technology for purifying naphthalene from coke-oven gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103451 CN1016182B (en) | 1988-06-04 | 1988-06-04 | Technology for purifying naphthalene from coke-oven gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1030602A true CN1030602A (en) | 1989-01-25 |
| CN1016182B CN1016182B (en) | 1992-04-08 |
Family
ID=4832611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103451 Expired CN1016182B (en) | 1988-06-04 | 1988-06-04 | Technology for purifying naphthalene from coke-oven gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016182B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069686C (en) * | 1997-09-11 | 2001-08-15 | 鞍山节能设备有限公司 | Gas washing oil and diesel oil denaphthalene |
| CN100463953C (en) * | 2004-07-27 | 2009-02-25 | 鞍山钢铁集团公司 | Technique for conditioning crude gas from gas making stove for coal dry distillation |
| CN101993699A (en) * | 2009-08-31 | 2011-03-30 | 吉林东圣焦化有限公司 | Coking indirect final cooling tower circulation washing process |
| CN102732327A (en) * | 2012-06-26 | 2012-10-17 | 窦伟星 | Method for recovering benzene hydrocarbon from coal gas |
| CN101619243B (en) * | 2009-07-29 | 2012-12-05 | 马鞍山钢铁股份有限公司 | Gas naphthalene washing process in primary-cooling working procedure of coke oven gas purification unit |
| CN105289164A (en) * | 2015-09-30 | 2016-02-03 | 北京东方雨虹防水技术股份有限公司 | Asphalt flue gas purification equipment |
-
1988
- 1988-06-04 CN CN 88103451 patent/CN1016182B/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069686C (en) * | 1997-09-11 | 2001-08-15 | 鞍山节能设备有限公司 | Gas washing oil and diesel oil denaphthalene |
| CN100463953C (en) * | 2004-07-27 | 2009-02-25 | 鞍山钢铁集团公司 | Technique for conditioning crude gas from gas making stove for coal dry distillation |
| CN101619243B (en) * | 2009-07-29 | 2012-12-05 | 马鞍山钢铁股份有限公司 | Gas naphthalene washing process in primary-cooling working procedure of coke oven gas purification unit |
| CN101993699A (en) * | 2009-08-31 | 2011-03-30 | 吉林东圣焦化有限公司 | Coking indirect final cooling tower circulation washing process |
| CN102732327A (en) * | 2012-06-26 | 2012-10-17 | 窦伟星 | Method for recovering benzene hydrocarbon from coal gas |
| CN102732327B (en) * | 2012-06-26 | 2014-04-09 | 窦伟星 | Method for recovering benzene hydrocarbon from coal gas |
| CN105289164A (en) * | 2015-09-30 | 2016-02-03 | 北京东方雨虹防水技术股份有限公司 | Asphalt flue gas purification equipment |
| CN105289164B (en) * | 2015-09-30 | 2017-08-25 | 北京东方雨虹防水技术股份有限公司 | Asphalt smoke gas purifying equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016182B (en) | 1992-04-08 |
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