CN202595069U - Coal gas scrubbing and purifying device - Google Patents
Coal gas scrubbing and purifying device Download PDFInfo
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- CN202595069U CN202595069U CN 201220271994 CN201220271994U CN202595069U CN 202595069 U CN202595069 U CN 202595069U CN 201220271994 CN201220271994 CN 201220271994 CN 201220271994 U CN201220271994 U CN 201220271994U CN 202595069 U CN202595069 U CN 202595069U
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- washing tower
- washing
- water
- cyclonic separator
- venturi scrubber
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Abstract
The utility model discloses a coal gas scrubbing and purifying device. The coal gas scrubbing and purifying device comprises a venturi scrubber, a scrubbing tower and a circulating water pump, wherein the inner part of the scrubbing tower is provided with a dust collection device, the dust collection device is arranged at an air inlet of the scrubbing tower, and the air inlet of the scrubbing tower is communicated with an air outlet of the venturi scrubber; and the circulating water pump is respectively communicated with a water inlet of the venturi scrubber and a water outlet of the scrubbing tower. According to the coal gas scrubbing and purifying device disclosed by the utility model, on one hand, the occupied space of the whole device is reduced as the dust collection device is arranged at the inner part of the scrubbing tower; on the other hand, small particles such as ashes containing in the coal gas can be changed into big particles after being subjected to wetting and gathering in the venturi scrubber, the big particles can enter into the scrubbing tower for separating, scrubbing and purifying, and thus the dust collection efficiency is greatly increased by being compared with the scrubbing and dust collection in the prior art; and the circulating water pump is used, water in the scrubbing tower is used as flushing water of the venturi scrubber, and thus the water consumption can be reduced to a certain extent.
Description
Technical field
The utility model relates to technical field of coal chemical industry, in particular to a kind of coal gas washing purification apparatus.
Background technology
In recent years, the energy of China, Chemicals were in the rapid growth stage always, and Coal Chemical Industry has been occupied critical role at the energy, chemical field.Along with environmental problem becomes increasingly conspicuous, the clean and effective of coal transforms and more and more comes into one's own simultaneously.Gasification is the gordian technique of coal clean utilization as " tap " of coal chemical technology.The Coal Chemical Industry project presents quick growth at present, and Coal Gasification Technology has also obtained developing rapidly and using, and has vast market prospect.
The air-flow bed coal-gasification technology is that coal slurry or coal dust and gasifying medium are sprayed at a high speed in the vapourizing furnace through nozzle, forms high turbulence, has strengthened the mixing in the vapourizing furnace, helps fully carrying out of gasification reaction.High temperature, high pressure in the airflow bed gasification furnace, mixing preferably that characteristics have determined it to be convenient to improve throughput, meet large scale chemical plant single series, development trend of large-scale, is the mainstream technology that extensive gasification of present stage is produced.The entrained flow bed gasification technology of present domestic application mainly contains GE-Texaco, Shell, siemens GSP, northwest chemical industry institute polynary slurry, the opposed multi-nozzle of China's reason, two sections stoves of Xi'an thermal technology institute, two sections stoves of Tsing-Hua University, space flight stove etc.
In the air-flow bed coal-gasification technology, about 1300 ℃-1500 ℃ of the raw gas temperature of coming out from vaporizer need be with high temperature rough gas cooling dedusting, and existing technology can be divided into two kinds of pot destroying process and chilling process.Pot destroying process generally is made up of one or more levels waste heat boiler and dry method deashing device (like porcelain filter) etc.High temperature rough gas is through one or more levels waste heat boiler, and temperature is reduced to 300 ℃-400 ℃, through deashing device, obtains the lower raw gas of dustiness then.Chilling process generally is made up of with its inner member the shock chamber.High temperature rough gas gets into the shock chamber, feeds the heat that a large amount of chilled water absorb high temperature rough gas simultaneously, and the lime-ash of carrying secretly in the raw gas is solidified, and obtaining temperature is 200 ℃-300 ℃, the raw gas that dustiness is lower.
For satisfying the needs that coal hydrogen manufacturing, coal system methyl alcohol and synthetic ammonia etc. are produced, generally also need carry out washing, purifying again through the raw gas after the cooling dedusting, could get into the subsequent conversion system.The gas washing purification process of Coal Chemical Industry industry employing at present is that raw gas is introduced Venturi scrubber; Carry out wetting the solid particulates of carrying secretly in the raw gas such as lime-ash and reunion; Send into washing tower then and wash, perhaps adopt the two-stage Venturi, or washing tower is sent in the combination of Venturi and separator again; Raw gas after the washing gets into transformation system, and Heisui River then gets into the usage on black water system and handles and recycle.This coal gas washing purification apparatus and technology, long flow path, facility investment is big, and it is big to take up room, and washing effect is bad, and the easy dust stratification of washing tower stops up, easy to clean not, the turnaround is long, influences the steady running of full factory.
The utility model content
The utility model aims to provide a kind of coal gas washing purification apparatus, and the coal gas washing purification apparatus technical process is long in the prior art, technical problem big, the dust removing effects difference takes up room to solve.
To achieve these goals, an aspect according to the utility model provides a kind of coal gas washing purification apparatus.This coal gas washing purification apparatus comprises: Venturi scrubber; Washing tower, set inside has cleaning apparatus, and cleaning apparatus is arranged on washing tower inlet mouth place; The washing tower inlet mouth is connected with the air outlet of Venturi scrubber.Water circulating pump is connected with the water-in and the washing tower water outlet of Venturi scrubber respectively.
Further, cleaning apparatus comprises one or one group of cyclonic separator.
Further, one group of cyclonic separator comprises 2 or 4 cyclonic separators that laterally arrange.
Further, one group of cyclonic separator comprises the above cyclonic separator of secondary, and the quantity of every grade of cyclonic separator is 1 ~ 8, and wherein, the inlet of next stage cyclonic separator is connected with the outlet of upper level cyclonic separator.
Further, one group of cyclonic separator comprises primary cyclone and secondary cyclone, and primary cyclone and secondary cyclone comprise 1 ~ 8 cyclonic separator that laterally arranges respectively.
Further, washing tower comprises: the container for storing liquid that sets gradually from bottom to top in washing tower shell and the washing tower shell, cleaning apparatus, spray water sparger, washing, purifying structure and scum dredger; And the top of washing tower shell is provided with the washing tower air outlet; The washing tower water outlet is arranged on the position, middle and upper part of container for storing liquid; Be provided with washing tower make up water inlet between washing, purifying structure and the scum dredger; And the bottom of washing tower is provided with wastewater outlet.
Further, water circulating pump further comprises the water outlet that communicates with the spray water sparger.
Further, the washing, purifying structure is column plate or filler.
Further, wastewater outlet is connected with Waste Water Treatment.
The coal gas washing purification apparatus of the utility model comprises Venturi scrubber, washing tower and water circulating pump.On the one hand, because cleaning apparatus is arranged at washing tower inside, reduced taking up room of complete assembly; On the other hand, wetting in Venturi scrubber, the reunion of small-particles such as the lime-ash of carrying secretly in the coal gas becomes macrobead, and then gets into washing tower, carries out separating, washing and purifies, and compares with scrubbing dust collection of the prior art, has greatly improved efficiency of dust collection.And the use water circulating pump, the wash-down water of the water of washing tower, can reduce water consumption to a certain extent as Venturi.In the prior art,, a plurality of assisted dust-collecting devices are set before washing tower usually in order to improve the efficiency of dust collection of coal gas washing purification apparatus; For example; Two-stage Venturi scrubbing or the dedusting of two-stage separator are set, or Venturi connects with separator etc., cause whole process flow longer like this.Reach identical dust removing effects, the coal gas washing purification apparatus of the utility model has compared with prior art greatly been simplified technical process.
Description of drawings
Figure of description is used to provide the further understanding to the utility model, constitutes the part of the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 shows according to the schematic flow sheet of the gas washing purifying method of the utility model embodiment and the structural representation of washing tower; And
One group of cyclonic separator that Fig. 2 shows according to the utility model embodiment is installed in the plan structure synoptic diagram in the washing tower.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment in the utility model can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
According to the typical embodiment of the utility model; As shown in Figure 1; Coal gas washing purification apparatus comprises Venturi scrubber 200, washing tower 300 and water circulating pump 100, and wherein, washing tower 300 set inside have cleaning apparatus 310; Cleaning apparatus 310 is arranged on washing tower inlet mouth 302 places, and washing tower inlet mouth 302 is connected with the air outlet of Venturi scrubber 200; Water circulating pump 100 is connected with the water-in and the washing tower water outlet 301 of Venturi scrubber 200 respectively.Adopt the technical scheme of the utility model, on the one hand,, reduced taking up room of complete assembly because cleaning apparatus is arranged on washing tower inside; Again on the one hand, wetting in Venturi scrubber, the reunion of small-particles such as the lime-ash of carrying secretly in the coal gas becomes macrobead, and then gets into washing tower, carries out separating, washing and purifies, and compares with scrubbing dust collection of the prior art, has greatly improved efficiency of dust collection.And the use water circulating pump, the wash-down water of the water of washing tower, can reduce water consumption to a certain extent as Venturi.
According to the typical embodiment of the utility model; As shown in Figure 1, washing tower 300 comprises container for storing liquid 311, cleaning apparatus 310, spray water sparger 303, washing, purifying structure and the scum dredger 306 that sets gradually in washing tower shell 304 and the washing tower shell 304 from bottom to top; And the top of washing tower shell 304 is provided with washing tower air outlet 305; Washing tower water outlet 301 is arranged on the position, middle and upper part of container for storing liquid 311; Be provided with washing tower make up water inlet 307 between washing, purifying structure and the scum dredger 306; And the bottom of washing tower 300 is provided with wastewater outlet 312.
According to the typical embodiment of the utility model, water circulating pump 100 further comprises the water outlet that communicates with spray water sparger 303.
According to the typical embodiment of the utility model, the washing, purifying structure is column plate 308 or filler, and wherein, column plate 308 can adopt float-valve type column plate, sieve plate.Wastewater outlet 312 is connected with Waste Water Treatment.
The method that gas washing purifies adopts said apparatus to carry out the washing, purifying of coal gas.Specifically comprise the steps: raw gas is introduced Venturi scrubber 200, wetting in Venturi scrubber 200, the reunion of small-particles such as the lime-ash of carrying secretly in the raw gas becomes macrobead, and then gets into washing tower 300, carries out separating, washing and purifies.Washing tower 300 is a composite structure; Raw gas gets into washing tower 300, at first carries out the first class purification dedusting through being positioned at one group of built-in cyclonic separator of washing tower 300 bottoms, derives from cyclonic separator top discharge pipe then; Again through the 303 water spray washings of spray water sparger; Getting into column plate 308 (or filler) and the make up water counter current contact that washing tower make up water inlet 307 adds, carry out secondary washing and purify, pass through the scum dredger 306 at washing tower 300 tops at last; Remove steam and the solid particulate carried secretly in the raw gas, derive from washing tower 300 tops.Between column plate 308 (or filler) and scum dredger 306, be provided with make up water inlet 307.Through the reservoir 311 of the isolated grey solid impurity particle of cyclonic separator along tremie pipe entering bottom, waste water is drawn from washing tower 300 bottoms and is sent into Waste Water Treatment.In position, container for storing liquid 311 middle and upper part, be provided with washing tower water outlet 301, cleaner washing water are sent into water circulating pump 100 pressurization back branch two-way, the one tunnel sends into Venturi scrubber 200, and spray water sparger 303 is sent into as the spray water of washing tower 300 in another road.Advanced the clean raw gas of twice washing, purifying, its vapour content reaches capacity, and dustiness is lower than 1mg/m
3, meet the requirement of subsequent conversion system.
Compare with coal gas washing purification apparatus of the prior art, the utility model utilizes cyclonic separator to have that volume is little, efficient is high, advantage of simple structure, and it is built in the washing tower; Improved efficiency of dust collection; Shortened technical process, reduced investment, equipment occupation space is little; Maintenance and maintenance are convenient, and have practiced thrift water consumption to a certain extent.Through the cyclonic separator group is optimized configuration, the utility model can also adapt to the raw gas purifying requirement of different dustiness, and is especially obvious to the high raw gas purifying effect of dustiness.Through the clean coal gas that the method that the utility model provided obtains, its vapour content reaches capacity, and dustiness is lower than 1mg/m
3, meet of the requirement of Coal Chemical Industry industry subsequent conversion system to synthetic gas.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (9)
1. a coal gas washing purification apparatus is characterized in that, comprising:
Venturi scrubber (200),
Washing tower (300), set inside have cleaning apparatus (310), and said cleaning apparatus (310) is arranged on washing tower inlet mouth (302) and locates; Said washing tower inlet mouth (302) is connected with the air outlet of said Venturi scrubber (200);
Water circulating pump (100) is connected with the water-in and the washing tower water outlet (301) of said Venturi scrubber (200) respectively.
2. device according to claim 1 is characterized in that, said cleaning apparatus (310) comprises one or one group of cyclonic separator.
3. device according to claim 2 is characterized in that, said one group of cyclonic separator comprises 2 or 4 cyclonic separators that laterally arrange.
4. device according to claim 2; It is characterized in that said one group of cyclonic separator comprises the above cyclonic separator of secondary, the quantity of every grade of cyclonic separator is 1 ~ 8; Wherein, the inlet of next stage cyclonic separator communicates with the outlet of upper level cyclonic separator.
5. device according to claim 4; It is characterized in that; Said one group of cyclonic separator comprises primary cyclone and secondary cyclone, and said primary cyclone and said secondary cyclone comprise 1 ~ 8 cyclonic separator that laterally arranges respectively.
6. device according to claim 1; It is characterized in that said washing tower (300) comprising: the container for storing liquid (311) that sets gradually in washing tower shell (304) and the said washing tower shell (304), said cleaning apparatus (310), spray water sparger (303), washing, purifying structure and scum dredger (306) from bottom to top;
And the top of said washing tower shell (304) is provided with washing tower air outlet (305);
Said washing tower water outlet (301) is arranged on the position, middle and upper part of said container for storing liquid (311);
Be provided with washing tower make up water inlet (307) between said washing, purifying structure and the said scum dredger (306); And
The bottom of said washing tower (300) is provided with wastewater outlet (312).
7. device according to claim 6 is characterized in that, said water circulating pump (100) further comprises the water outlet that communicates with said spray water sparger (303).
8. device according to claim 6 is characterized in that, said washing, purifying structure is column plate (308) or filler.
9. device according to claim 6 is characterized in that, said wastewater outlet (312) is connected with Waste Water Treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271994 CN202595069U (en) | 2012-06-08 | 2012-06-08 | Coal gas scrubbing and purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271994 CN202595069U (en) | 2012-06-08 | 2012-06-08 | Coal gas scrubbing and purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202595069U true CN202595069U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220271994 Expired - Lifetime CN202595069U (en) | 2012-06-08 | 2012-06-08 | Coal gas scrubbing and purifying device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202595069U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690689A (en) * | 2012-06-08 | 2012-09-26 | 神华集团有限责任公司 | Device and method for scrubbing and purifying coal gas |
| CN104403702A (en) * | 2014-11-24 | 2015-03-11 | 水煤浆气化及煤化工国家工程研究中心 | Dedusting device for synthetic gas |
-
2012
- 2012-06-08 CN CN 201220271994 patent/CN202595069U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690689A (en) * | 2012-06-08 | 2012-09-26 | 神华集团有限责任公司 | Device and method for scrubbing and purifying coal gas |
| CN102690689B (en) * | 2012-06-08 | 2013-12-04 | 神华集团有限责任公司 | Device and method for scrubbing and purifying coal gas |
| CN104403702A (en) * | 2014-11-24 | 2015-03-11 | 水煤浆气化及煤化工国家工程研究中心 | Dedusting device for synthetic gas |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |