CN106367126A - Coke oven crude gas direct and indirect mixing and cooling process - Google Patents
Coke oven crude gas direct and indirect mixing and cooling process Download PDFInfo
- Publication number
- CN106367126A CN106367126A CN201610754984.1A CN201610754984A CN106367126A CN 106367126 A CN106367126 A CN 106367126A CN 201610754984 A CN201610754984 A CN 201610754984A CN 106367126 A CN106367126 A CN 106367126A
- Authority
- CN
- China
- Prior art keywords
- gas
- direct
- coal oven
- oven dithio
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
- C10K1/046—Reducing the tar content
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
- C10K1/06—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials combined with spraying with water
Abstract
The invention discloses a coke oven crude gas direct and indirect mixing and cooling process which comprises the following steps: enabling coke oven crude gas to pass through a direct spraying type water-washing tower, and directly spraying circulating ammonia water and cooling to finish direct cooling; and entering an indirect primary cooler, finishing indirect cooling by refrigeration water, extracting the cooled coke oven crude gas by an air blower and entering the next procedure. The coke oven crude gas direct and indirect mixing and cooling process has the advantages that the heat resistance requirement of a whole heat exchange component is reduced, the life is long, the maintenance amount is small, the afterheat of the coke oven crude gas is completely utilized, energy conservation and emission reduction are realized, the production cost is low, evaporation of circulating water is reduced greatly, a circulating water treatment device is not needed, secondary pollution is reduced, resources are comprehensively utilized, and foundation is laid for further utilization of the subsequent coke oven crude gas.
Description
Technical field
The present invention relates to the technical field that processes of coal oven dithio-gas and in particular to a kind of coal oven dithio-gas directly, indirectly mix
Close cooling technique.
Background technology
Coal oven dithio-gas cooling technique is at present: 80 DEG C～85 DEG C coke-stove gas coming from gas-liquid separator enter primary cooler
Top, by 55 DEG C of recirculated water indirect heat exchange, after disconnected column plate again by indirect 2 heat exchange of recirculated water to 45 DEG C, then pass through again
Through chilled water indirect heat exchange to 22-25 DEG C after disconnected column plate, a small amount of condensed fluid is had to spray in chilled water heat exchanging segment, because indirectly changing
The coefficient of heat transfer of heat is low, and the relatively direct heat exchange of cooling effect is poor, generally requires to increase heat exchange area to meet wanting of coal gas cooling
Ask.In this condition, the most frequently used solution is often to increase heat exchange area and the height of heat exchanger, and device height
Become huge, recirculating water pump lift is higher, increase water pump power consumption, meanwhile, a large amount of tar carried secretly by raw coke oven gas and dust enters
Enter primary cooler, cause transverse tube to wear and tear larger, transverse tube often leaks maintenance, and accident rate also substantially increases；Using circulating water,
Recirculated water incrustation scale needs to process, and causes heat exchange pipeline fouling in the case that scale treatment is bad, reduces heat exchange efficiency, after blocking
Equipment rebuilding and replacing transverse tube, increased unsafe factor.
Content of the invention
It is an object of the invention to technical problem present in solution prior art, provide a kind of coal oven dithio-gas for this
Directly, indirect combination cooling technique, technical solution of the present invention heat exchange efficiency is high, and coal oven dithio-gas outlet temperature is low, coke oven famine coal
It is few that gas carries pollutant secretly, safe and reliable to operation, saves manufacturing cost, using segmentation heat exchange, reduces the heat-resisting of overall heat exchange component
Degree requires, life-span length, a little repair, and waste heat of coke oven crude gas makes full use of, energy-saving and emission-reduction, and low production cost is greatly decreased and follows
Ring evaporation of water, no recirculated water water treatment facilities, reduce secondary pollution, to comprehensive utilization of resources, for follow-up coal oven dithio-gas
Further with laying the foundation.
In order to achieve the above object, the present invention makes full use of waste heat of coke oven crude gas and reclaims for refrigeration machine production chilled water
With the effect of efficient water scrubber, meanwhile, high temperature section adopts air-cooled technology, has eliminated circulation evaporation of water, reduces and produces water
Use and the secondary pollution that brought of circulating water treatment.
The invention provides a kind of direct, the indirect combination cooling technique of coal oven dithio-gas, specifically include following steps:
(1) coke oven collecting main gas-liquid separator separates go out 80 DEG C～85 DEG C of coal oven dithio-gas, subsequently into directly spray
Formula water scrubber；
(2) cyclic ammonia water directly sprays coal oven dithio-gas, and coal oven dithio-gas are cooled to 40 DEG C～50 DEG C；
(3) 40 DEG C～50 DEG C of coal oven dithio-gas enter indirect primary cooler cooling, and chilled water is cooled to 20 DEG C～25 indirectly
℃；
(4) 20 DEG C～25 DEG C coal oven dithio-gas extracted out by aerator, complete to cool down.
Further, the void tower wind speed of direct fountain water scrubber is 2m/s.
Further, the concentration of cyclic ammonia water is 3g/l.
Further, after cyclic ammonia water sprays coal oven dithio-gas, filter is pumped into by circulation, through filter successively
Enter refrigeration machine, heat exchanger and air cooler, temperature drops to 40 DEG C -50 DEG C, returns fountain water scrubber, recycle.
Further, refrigeration machine is lithium bromide refrigerator.
Further, heat exchanger is heating water heat exchanger, and shell and tube arranges.
Further, indirect primary cooler is sequentially connected air cooler and refrigeration machine by pipeline, is connected with cooling in pipeline
Water.
Further, indirect primary cooler is horizontal water-tube primary cooler, and is not provided with disconnected tower layer.
Further, horizontal water-tube primary cooler top spray condensed fluid, washs transverse tube, prevents transverse tube fouling.
The beneficial effect that the present invention produces:
1. used by technical solution of the present invention, tower body equipment volume, the relatively conventional coke-oven crude gas cooling facility of weight are little；
2. it is respectively provided with high temperature directly cooling and low temperature indirect cooling in gas cooling system.Used heat using high temperature section
Source, as the power heat source of low-temperature zone, eliminates and produces water evaporation, energy-saving and emission-reduction, less greenhouse effect；
3. sprayed by cyclic ammonia water, the continuous Collision deposition of substantial amounts of tar slag harmful substance gets off, it is to avoid to transverse tube
Abrasion, reduce maintenance load it is ensured that production safety, minimizing accident；
4. heat exchange efficiency is high, and gas outlet temperature is low, and it is few that coal gas carries pollutant secretly；
5. segmentation heat exchange, the heat resistance reducing overall heat exchange component requires, life-span length, a little repair；
6. waste heat of coke oven crude gas makes full use of, and reduces circulating water power consumption；
7. water used by is sealing and circulating, need not add production water, energy-saving and emission-reduction, low production cost in a large number, be greatly decreased and follow
Ring evaporation of water, no recirculated water water treatment facilities, reduce secondary pollution.
Brief description
Fig. 1 present invention process flow chart
Specific embodiment
Embodiment 1
Direct, the indirect combination cooling technique of a kind of coal oven dithio-gas as shown in Figure 1, specifically includes following steps:
(1) coke oven collecting main gas-liquid separator separates go out 80 DEG C～85 DEG C of coal oven dithio-gas, subsequently into directly spray
Formula water scrubber, the void tower wind speed of direct fountain water scrubber is 2m/s, and the cyclic ammonia water of 3g/l carries out spraying cooling, about drops to 70
℃；
(2) after the cyclic ammonia water of 3g/l directly sprays coal oven dithio-gas, filter is pumped into by circulation, through filter
Sequentially enter lithium bromide refrigerator, shell and tube heating water heat exchanger and air cooler, temperature drops to 40 DEG C -50 DEG C, returns
Fountain water scrubber, recycles, completes directly to cool down；
(3) 40 DEG C～50 DEG C of coal oven dithio-gas enter the indirect primary cooler of transverse tube type, and indirect primary cooler passes through pipeline successively
Connect air cooler and refrigeration machine, be connected with cooling water in pipeline, cooling water cools down coal oven dithio-gas indirectly to 20 DEG C～25 DEG C,
Complete indirectly to cool down；Horizontal water-tube primary cooler top spray condensed fluid, washs transverse tube, prevents transverse tube fouling；
(4) 20 DEG C～25 DEG C coal oven dithio-gas extracted out by aerator, complete to cool down, and enter subsequent processing, and such as desulfurization, system is burnt
Oil, benzene processed etc..
Other unspecified parts are prior art.Although above-described embodiment is made that to the present invention and retouches in detail
State, but it be only a part of embodiment of the present invention, rather than whole embodiments, people can also according to the present embodiment without
Other embodiment is obtained, these embodiments broadly fall into the scope of the present invention under the premise of creativeness.
Claims (10)
1. a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: comprise the steps:
(1) 80 DEG C～85 DEG C of coal oven dithio-gas enter direct fountain water scrubber；
(2) cyclic ammonia water directly sprays coal oven dithio-gas, and coal oven dithio-gas are cooled to 40 DEG C～50 DEG C；
(3) 40 DEG C～50 DEG C of coal oven dithio-gas enter indirect primary cooler cooling, and chilled water is cooled to 20 DEG C～25 DEG C indirectly；
(4) 20 DEG C～25 DEG C coal oven dithio-gas extracted out by aerator, complete to cool down.
2. according to claim 1 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: described 80
DEG C～85 DEG C of coal oven dithio-gas obtain by coke oven collecting main gas-liquid separator separates.
3. according to claim 1 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: described straight
The void tower wind speed connecing fountain water scrubber is 2m/s.
4. according to claim 1 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: described follow
The concentration of ring ammonia is 3g/l.
5. according to claim 1 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: described follow
Ring ammonia spray coal oven dithio-gas after, filter is pumped into by circulation, through filter sequentially enter refrigeration machine, heat exchanger and
Air cooler, temperature drops to 40 DEG C -50 DEG C, returns fountain water scrubber, recycles.
6. according to claim 5 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: described system
Cold is lithium bromide refrigerator.
7. according to claim 5 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: described change
Hot device is heating water heat exchanger.
8. according to claim 7 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: described adopt
Warm water- to-water heat exchanger shell and tube arrangement.
9. according to claim 1 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: between described
Connect primary cooler and air cooler and refrigeration machine are sequentially connected by pipeline, in pipeline, be connected with cooling water.
10. according to claim 1 a kind of direct, the indirect combination cooling technique of coal oven dithio-gas it is characterised in that: between described
Connecing primary cooler is horizontal water-tube primary cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610754984.1A CN106367126A (en) | 2016-08-19 | 2016-08-19 | Coke oven crude gas direct and indirect mixing and cooling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610754984.1A CN106367126A (en) | 2016-08-19 | 2016-08-19 | Coke oven crude gas direct and indirect mixing and cooling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106367126A true CN106367126A (en) | 2017-02-01 |
Family
ID=57900658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610754984.1A Pending CN106367126A (en) | 2016-08-19 | 2016-08-19 | Coke oven crude gas direct and indirect mixing and cooling process |
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| Country | Link |
|---|---|
| CN (1) | CN106367126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426460A (en) * | 2018-05-21 | 2018-08-21 | 马鞍山钢铁股份有限公司 | Water at low temperature preparation system suitable for coke oven gas purification system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130087742A1 (en) * | 2011-10-06 | 2013-04-11 | Kellogg Brown & Root Llc | Apparatus And Methods For Saturating And Purifying Syngas |
| CN103484169A (en) * | 2013-10-30 | 2014-01-01 | 北京中亿孚佑科技有限公司 | New method for performing preliminary condensation refrigeration on coking raw gas |
| US20140091009A1 (en) * | 2012-09-28 | 2014-04-03 | Uop, Llc | Process for washing a gas from a hydroprocessed effluent, and an apparatus and separator relating thereto |
| CN104109545A (en) * | 2014-07-23 | 2014-10-22 | 高荣 | Process and device for carbonizing coal in indirect heating and direct gas heating ways |
-
2016
- 2016-08-19 CN CN201610754984.1A patent/CN106367126A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130087742A1 (en) * | 2011-10-06 | 2013-04-11 | Kellogg Brown & Root Llc | Apparatus And Methods For Saturating And Purifying Syngas |
| US20140091009A1 (en) * | 2012-09-28 | 2014-04-03 | Uop, Llc | Process for washing a gas from a hydroprocessed effluent, and an apparatus and separator relating thereto |
| CN103484169A (en) * | 2013-10-30 | 2014-01-01 | 北京中亿孚佑科技有限公司 | New method for performing preliminary condensation refrigeration on coking raw gas |
| CN104109545A (en) * | 2014-07-23 | 2014-10-22 | 高荣 | Process and device for carbonizing coal in indirect heating and direct gas heating ways |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426460A (en) * | 2018-05-21 | 2018-08-21 | 马鞍山钢铁股份有限公司 | Water at low temperature preparation system suitable for coke oven gas purification system |
| CN108426460B (en) * | 2018-05-21 | 2024-01-16 | 马鞍山钢铁股份有限公司 | Low-temperature water preparation system suitable for coke oven gas purification system |
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Application publication date: 20170201 |
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