CN1327030A - Primary purifying for producing gas by gas-flow bed using hydrocarbon compound as raw material - Google Patents
Primary purifying for producing gas by gas-flow bed using hydrocarbon compound as raw material Download PDFInfo
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- CN1327030A CN1327030A CN 01112700 CN01112700A CN1327030A CN 1327030 A CN1327030 A CN 1327030A CN 01112700 CN01112700 CN 01112700 CN 01112700 A CN01112700 A CN 01112700A CN 1327030 A CN1327030 A CN 1327030A
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Abstract
The primary purifier includes one T-shaped diluter, one cyclonic separator and washing tower. The purifier is used to primarily purity gas containing hydrocarbon compound and the treated gas has ash content below 8 mg/cu m and HCN, HCL, HCOOH and NH3 in trace level, and pressure of 0.15 MPa. The treated gas has ash content not to block pipeline and no water and the equipment has long service life.
Description
The present invention relates to a kind of coal gas rough purification device, relating in particular to coal, refinery coke, biomass, flammable trade waste is the rough purification device of the coal gas of unstripped gas fluidized bed gasification production.
As everyone knows, be in the coal gas of unstripped gas fluidized bed gasification production, with coal, refinery coke, biomass, flammable trade waste except containing CO and H
2Outside effective constituent, also contain CO
2, H
2O, H
2S, COS, CH
4, N
2, Ar, NH
3, component such as HCN, HCl, HCOOH and lime-ash, the purpose of rough purification is lime-ash, the NH that removes wherein
3, HCN, HCl and HCOOH etc., for civilian and further purification and deep processing.Especially for coal than horn of plenty, oil gas relative shortage the area and national, for hydrogen source and synthetic gas (coal gas) being provided, advancing DCL/Direct coal liquefaction and indirect liquefaction industry, development integrated gasification combined cycle plants (IGCC) to generate electricity, it is even more important that the rough purification of coal gas will seem.
Chinese patent (application number 94117093.4, publication number CN1104991A) disclosed a kind of gas cleaning system of " orifice or the Venturi scrubber, the back is with a kind of gas-liquid washing column " by Texaco Development Corporation (Texaco Development Corporation) invention.Practice shows that orifice or Venturi scrubber stop up fouling easily, and the cross section of fouling is chequered with black and white, is the tree ring shape, and influence is produced; Even when not stopping up, coal gas through orifice or Venturi scrubber also can produce～pressure of 0.3Mpa falls, and causes power loss, increases process cost; Water phenomenon also can take place because structure is unreasonable in the said gas-liquid washing column of this patent, influences lower procedure (for example water-gas shift) normal operation; Also because the structure of gas-liquid washing column is perfect inadequately, discharging contain the easy blocking pipe of pulp water, cause trouble of shutdown.Given this,, fall, save energy consumption, be not with water, prevent that lime-ash from stopping up, and prolongs the work period to reduce gas pressure about producer and engineering technical personnel press for a kind of new coal gas rough purification method and apparatus.
The objective of the invention is to disclose a kind of coal gas rough purification device, a kind of being used for the hydrocarbon-containiproducts is raw material, defectives such as specifically a kind of to be used for coal, refinery coke, biomass, flammable trade waste be raw material produces the rough purification device of coal gas by gas-flow bed gasifying apparatus, and the existing in prior technology pressure drop is big, energy consumption is high to overcome, lime-ash stops up and the work period is short.
Realize the technical scheme of the object of the invention:
Said refining plant comprises:
A T type diluter that constitutes by transverse tube and vertical tube;
A cyclonic separator that T type pipe diluter is connected by first pipeline with its top;
The washing tower that the gas exit that makes the cyclonic separator top by second pipeline is connected with its bottom.
In preferred version of the present invention, the transverse tube of T type pipe diluter is an angle of 90 degrees with vertical tube and is connected;
In the grey pulp water storage tank tapering of cyclonic separator lower end an annular water controller is set, this annular water controller is connected with circulating pipe, and water flowing is stopped up grey pulp water storage tank tapering to prevent that lime-ash from building bridge;
Washing tower is conventional knockout tower (packing tower or a tray column, preferentially select bubble-plate column in the tray column for use), and be divided into three sections, from top to bottom by the foam removal silk screen, first section filler or column plate, second section filler or column plate and water storage tank are formed, first section filler or column plate top water-in are connected for the deoxidation water pipe with outer, outer to spray for de-oxygenised water, the water-in on the top of second section filler or column plate links to each other with the water storage tank by water circulating pump, with spray recirculated water, certainly, between water circulating pump and T type pipe diluter, also circulating pipe can be set, so that part recirculated water is sent into T type pipe diluter, further can in the water storage tank of packing tower bottom an annular water controller be set, this annular water controller is connected with circulating pipe, and water flowing is stopped up water storage tank tapering to prevent that lime-ash from building bridge.
Obviously because washing tower adopted segmented structure, therefore, after coal gas enters washing tower, earlier with the recirculated water washing, then with outer for the de-oxygenised water washing, can guarantee the effect of washing also to help the conserve water consumption simultaneously.
Below will the present invention is further illustrated by accompanying drawing.
Fig. 1 is the device synoptic diagram.
Fig. 2 is a T type diluter structural representation.
Fig. 3 is the annular water controller structural representation that is arranged at cyclonic separator.
Fig. 4 is that A---A among Fig. 3 is to synoptic diagram.
By Fig. 1 and Fig. 2 as seen, device of the present invention comprises:
A T type diluter 1 that constitutes by transverse tube 101 and vertical tube 102, coal gas and the lime-ash that carries thereof and water enter T type diluter 1 by transverse tube 101, de-oxygenised water and (or) recirculated water enters T type diluter 1 by vertical tube 102, diluted mixture in T type diluter 1, lime-ash is mixed with dilution water, reach low solid content in the water;
A cyclonic separator 3 that T type pipe diluter 1 is connected by first pipeline 2 with its top.Realize that in this cyclonic separator 3 coal gas contains separating of grey pulp water with major part.Coal gas from T type pipe diluter 1, contain grey slag-water slurry tangent line and enter cyclonic separator 3, through rotation, under the effect of mass force, most of grey pulp water flows down along the cyclonic separation wall, enter bottom ash pulp water storage tank 301, the ash pulp water is discharged by grey pulp water storage tank 301 bottoms, be sent to slag inclusion Waste Water Treatment 8, coal gas is discharged through second pipeline 4, the tapering of ash pulp water storage tank 301 is provided with an annular water controller 5, this annular water controller 5 is connected with circulating pipe 6, and simultaneously grey pulp water storage tank 301 also is provided with liquidometer and liquid level alarm device, so that liquid level is controlled and reported to the police;
The washing tower 7 that the gas exit that makes cyclonic separator 3 tops by second pipeline 4 is connected with its bottom, its effect are that contained lime-ash removes totally HCN, HCl, HCOOH and NH in the while eccysis coal gas in the coal gas that cyclonic separator 3 is sent
3Etc. component, for lower procedure provides acceptable material gas, according to the present invention, washing tower is a conventional knockout tower, comprise packing tower or tray column, preferentially select bubble-plate column in the tray column for use, and be divided into three sections, from top to bottom by foam removal silk screen 701, first section filler or column plate 702, second section filler or column plate 703 and water storage tank 704 are formed, be provided with recirculated water inlet 705 between first section filler or column plate 702 and second section filler or the column plate 703, the top of first section filler or column plate 702 is provided with outer for de-oxygenised water inlet 706, the tapering of water storage tank 704 is provided with an annular water controller 5, this annular water controller 5 is connected with circulating pipe 6, water storage tank 704 is provided with liquidometer and warning device, water storage tank 704 links to each other with water circulating pump 709, recycle pump 709 outlets are connected with the recirculated water inlet 705 and the circulating pipe 6 of washing tower 7, so that part recirculated water is sent into T type pipe diluter 1, purification coal gas after the washing is discharged by cat head, the fed downstream operation, a small amount of grey pulp water is disposed to slag inclusion Waste Water Treatment 8 by water storage tank 704.
As seen from Figure 2, said T type pipe diluter 1 is made of transverse tube 101 and vertical tube 102, and transverse tube 101 is an angle of 90 degrees with vertical tube 102 and is connected, and dilution water enters diluter 1 by vertical tube 102, it is 1～10m/s that its sectional area should make water flow velocity, and length is 4～8 times bore; Coal gas enters diluter 1 by transverse tube 101, and it is 8～12m/s that its sectional area should make velocity of medium, and length is 4～8 times bore.
By Fig. 3 and Fig. 4 as seen, said annular water controller 5 is interconnected by endless tube 501 and some arms 502 and forms, be fixedly installed on the tapering of the water storage tank 704 of the tapering of grey pulp water storage tank 301 of cyclonic separator 3 and washing tower 7, endless tube 501 is provided with a water-in 503, be connected with water inlet pipe 6, it is 0.5～2m/s that the sectional area of endless tube 501 should make water flow velocity, is 2～5m/s and arm 502 should make water flow velocity.Water enters endless tube 501 by circulating pipe 6 by water-in 503, enters arm 502 then, flows into the tapering of the tower at place by arm 502, thereby can prevent that lime-ash from stopping up the tapering of tower.
Adopt device of the present invention to being that the coal gas of raw material carries out rough purification with the hydrocarbon-containiproducts, leave that the grey quantity of slag can reach 8mg/m in the coal gas of washing tower 7
3Below, HCN, HCl, HCOOH and NH
3Etc. component is tracer level, and pressure drop is 0.15Mpa, has prevented the lime-ash blocking pipe, and drawbacks such as coal gas band water have prolonged the work period.
Embodiment 1
One day was handled the coal water slurry gasification device of 1000 tons of coals, and vapor pressure is 6.5MPa, and gasification temperature is 1300 ℃, went out vaporizer after washing, and gas temperature is 240 ℃, and the dry gas flow is 85000Nm
3/ h, wet gas flow are 200000Nm
3/ h, the dry coal powder is 1: 1.4 with the ratio of water vapor in the wet gas, contains CO in the dry gas
2=17%, CO+H
2=80%, also contain N
2, Ar, H
2S, COS, NH
3, HCl, HCN, CH
4, HCOOH etc., account for 3%, be benchmark with the dry gas, wherein containing the grey quantity of slag is 6g/Nm
3
The gas pressure that advances T type pipe diluter 1 is 6.4MPa, and the temperature for de-oxygenised water is 180 ℃ outward, and the water yield is 40t/h.Coal gas mixes with water, vapor condensation in a small amount of wet gas, gas such as HCl, HCN, H
2S, NH
3, HCOOH, CO
2Part is measured soluble in water, and water mixes with lime-ash in the coal gas, and solid content is 1.2% (quality) in the water.
Coal gas with contain grey pulp water and enter cyclonic separation 3 through first pipeline 2, under the effect of mass force, 95% the grey pulp water that contains enters bottom ash pulp water storage tank 301 along the infiltration inwall of cyclonic separation 3, the discharging of ash pulp water, for preventing that pipeline from stopping up, add less water by annular water controller 5 to grey pulp water storage tank 301, destroy lime-ash and build bridge.The wet gas of removing most of grey pulp water enters washing tower 7 by second pipeline 4.
The diameter of the transverse tube 101 of T type pipe diluter 1 is 480mm, the diameter of vertical tube 102 is 60mm, the internal diameter of cyclonic separation 3 is 1500mm, highly be 10m, it is that 3.5 meters, virtual height are 15 meters packing tower that washing tower 7 adopts diameters, and the filling Pall ring is 80t/h for the deoxidation water yield outward, quantity of circulating water is 75t/h, goes out that to contain lime-ash in the coal gas of washing tower 7 be 8mg/m
3, the pressure drop of rough purification system is 0.15MPa, and not stifled slag is not with water, satisfies the lower procedure requirement preferably, and more existing patented technology is improved.
Claims (10)
1. be the gas cleaning device of raw material with the hydrocarbon-containiproducts, it is characterized in that this device comprises:
A T type diluter (1) that constitutes by transverse tube (101) and vertical tube (102);
A cyclonic separator (3) that T type pipe diluter (1) is connected by first pipeline (2) with its top;
The washing tower (7) that the gas exit that makes cyclonic separator (3) top by second pipeline (4) is connected with its bottom.
2. device as claimed in claim 1, it is characterized in that, said washing tower (7) comprises packing tower or tray column, comprise foam removal silk screen (701) from top to bottom, first section filler or column plate (702), second section filler or column plate (703) and water storage tank (704), be provided with recirculated water inlet (705) between first section filler or column plate (702) and second section filler or the column plate (703), the top of first section filler or column plate (702) is provided with outer for de-oxygenised water inlet (706), water storage tank (704) links to each other with water circulating pump (709), and recycle pump (709) outlet is connected with the recirculated water inlet (705) and the circulating pipe (6) of washing tower (7).
3. device as claimed in claim 2 is characterized in that, said tray column is a bubble-plate column.
4. device as claimed in claim 2 is characterized in that, the tapering of water storage tank (704) is provided with an annular water controller (5), and this annular water controller (5) is connected with circulating pipe (6).
5. device as claimed in claim 1 is characterized in that, the tapering of the grey pulp water storage tank (301) of cyclonic separator (3) bottom is provided with an annular water controller (5), and this annular water controller (5) is connected with circulating pipe (6).
6. as claim 4 or 5 described devices, it is characterized in that, said annular water controller (5) is interconnected by endless tube (501) and some arms (502) and forms, the water-in (503) that endless tube (501) is provided with is connected with circulating pipe (6), and arm (502) is connected with the tapering of tower.
7. device as claimed in claim 6 is characterized in that, it is 0.5～2m/s that the sectional area of endless tube (501) should make water flow velocity, and it is 2～5m/s that arm (502) should make water flow velocity.
8. as claim 2 or 5 described devices, it is characterized in that grey pulp water storage tank (301) and water storage tank (704) are provided with liquidometer and liquid level alarm device.
9. device as claimed in claim 1 is characterized in that, the transverse tube (101) of said T type pipe diluter (1) is an angle of 90 degrees with vertical tube 102 and is connected.
10. device as claimed in claim 9 is characterized in that, it is 1～10m/s that the sectional area of vertical tube (102) should make water flow velocity, and length is 4～8 times bore; It is 8～12m/s that the sectional area of transverse tube (101) should make velocity of medium, and length is 4～8 times bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01112700 CN1120217C (en) | 2001-04-24 | 2001-04-24 | Primary purifying for producing gas by gas-flow bed using hydrocarbon compound as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01112700 CN1120217C (en) | 2001-04-24 | 2001-04-24 | Primary purifying for producing gas by gas-flow bed using hydrocarbon compound as raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1327030A true CN1327030A (en) | 2001-12-19 |
| CN1120217C CN1120217C (en) | 2003-09-03 |
Family
ID=4659455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01112700 Expired - Lifetime CN1120217C (en) | 2001-04-24 | 2001-04-24 | Primary purifying for producing gas by gas-flow bed using hydrocarbon compound as raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1120217C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031158A (en) * | 2010-12-16 | 2011-04-27 | 神华集团有限责任公司 | Coal gas purifying device |
| CN104073296A (en) * | 2014-07-16 | 2014-10-01 | 上海化工研究院 | Technology and device for dust removal purification of IGCC (Integrated gasification combined cycle) raw gas |
| CN104357096A (en) * | 2014-10-16 | 2015-02-18 | 天津奥展兴达化工技术有限公司 | Efficient energy-saving gas purifying treatment method |
| CN104531230A (en) * | 2014-12-09 | 2015-04-22 | 贵州开阳化工有限公司 | High-efficiency energy-saving water gas purification device |
| CN108636018A (en) * | 2018-07-17 | 2018-10-12 | 华东理工大学 | A kind of the mixer wash mill and mixer washing system of dust-laden synthesis gas |
| CN108913221A (en) * | 2018-06-27 | 2018-11-30 | 陕西延长石油（集团）有限责任公司 | A kind of oil-containing dusty gas chilling device and method |
-
2001
- 2001-04-24 CN CN 01112700 patent/CN1120217C/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031158A (en) * | 2010-12-16 | 2011-04-27 | 神华集团有限责任公司 | Coal gas purifying device |
| CN102031158B (en) * | 2010-12-16 | 2014-04-30 | 神华集团有限责任公司 | Coal gas purifying device |
| CN104073296A (en) * | 2014-07-16 | 2014-10-01 | 上海化工研究院 | Technology and device for dust removal purification of IGCC (Integrated gasification combined cycle) raw gas |
| CN104357096A (en) * | 2014-10-16 | 2015-02-18 | 天津奥展兴达化工技术有限公司 | Efficient energy-saving gas purifying treatment method |
| CN104531230A (en) * | 2014-12-09 | 2015-04-22 | 贵州开阳化工有限公司 | High-efficiency energy-saving water gas purification device |
| CN108913221A (en) * | 2018-06-27 | 2018-11-30 | 陕西延长石油（集团）有限责任公司 | A kind of oil-containing dusty gas chilling device and method |
| CN108913221B (en) * | 2018-06-27 | 2020-10-09 | 陕西延长石油（集团）有限责任公司 | Oil-containing and dust-containing gas quenching device and method |
| CN108636018A (en) * | 2018-07-17 | 2018-10-12 | 华东理工大学 | A kind of the mixer wash mill and mixer washing system of dust-laden synthesis gas |
| CN108636018B (en) * | 2018-07-17 | 2024-06-07 | 华东理工大学 | Mixer washing device and mixer washing system for dust-containing synthesis gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1120217C (en) | 2003-09-03 |
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Granted publication date: 20030903 |
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