CN201495203U - Inflation cone for coal gas gasification device - Google Patents
Inflation cone for coal gas gasification device Download PDFInfo
- Publication number
- CN201495203U CN201495203U CN2009201874572U CN200920187457U CN201495203U CN 201495203 U CN201495203 U CN 201495203U CN 2009201874572 U CN2009201874572 U CN 2009201874572U CN 200920187457 U CN200920187457 U CN 200920187457U CN 201495203 U CN201495203 U CN 201495203U
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- CN
- China
- Prior art keywords
- inflation
- coal
- cone
- fine coal
- awl
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an inflation cone for a coal gas gasification device. The inflation cone is a conical tube, wherein the cone angle is 12-13.5 degrees, a plurality of through-holes which are arranged evenly are arranged on the wall of the conical tube, and the aperture of the through-hole is 2-4 mm. The inflation cone has excellent permeability, high ventilation and long service life, does not have the phenomena of blockage and bridging of coal dust, and reduces the industrial cost.
Description
Technical field
The utility model relates to the coal gasification field, specifically is that a kind of gasifying powder coal device is bored with inflation.
Background technology
Space flight stove coal gasification be a kind of be raw material with fine coal, rare gas element conveying, high temperature, high pressure draft bed coal-gasification, the technology of producing crude synthesis gas.This technology has fully absorbed the advantage of the world today's two big advanced Coal Gasification Technology, and this technology all adopts advanced fine coal entrained flow bed gasification technology being equipped with coal, defeated coal, combustion control system, vapourizing furnace radiation section; Gas chilled flow process technology is then adopted in lime-ash water system, washing, purification.
The conveying of solid fine coal is one of core technology of space flight stove coal gasification, and the fine coal in the gasifying powder coal device is carried and mainly carried out according to the principle of run by gravity, and equipment layout is arranged from top to bottom according to the needs of flow process and run by gravity.And the inflation awl is the crucial internals that guarantee fine coal delivery system safe and stable operation, bores so all be provided with inflation in the bottom of every fine coal storage tank.These internals undertaking pressurization, solid fine coal fluidisation, remove task such as bridge.Its principle of work is to utilize low pressure or high pressure gas by the uniform gas that the forms impact of inflation awl institute, make fine coal be in homogeneous state in the inside of equipment, thereby solve the blockage problem that fine coal causes because of bridge formation in course of conveying, also slow down the wear problem of equipment simultaneously, increase the service life.If improper, in service the breaking down of inflation awl design can be caused the fine coal delivery system to break down and then influenced gasifying powder coal device, cause parking.
China's dry method fine coal conveying technology is most to adopt sintering metal inflation awl, but its life cycle is short, fragile;
The analysis of causes:
1, the sintering process powder can produce particle bridging phenomenon, and gas distribution is inhomogeneous;
When 2, strainer reached 5 μ, its thickness and density had determined that its resistance is big, and surface velocity waits shortcoming slowly;
3, the meticulous ventilation property that will certainly reduce sintering metal of micropore is poor, increases pressure drop, reduces the flux of gas;
4, fine coal too carefully also can stop up the inflation awl;
5, the variation of fine coal and delivering gas temperature drop can cause also in the fine coal that moisture content is separated out and then be blocking microporous.
The utility model content
The utility model provides a kind of gasifying powder coal device to bore with inflation, and its good permeability, fine coal do not have obstruction, bridging phenomenon, long service life, and reduced industrial cost.
The technical solution of the utility model is:
A kind of gasifying powder coal device is conical shell with the inflation awl, and it is characterized in that: the angulus pyramidis α of described conical shell is the 12-13.5 degree, has through hole arranged in a uniform on the conically shaped body wall, and the aperture of described through hole is 2-4mm.
Described gasifying powder coal device is characterized in that: the making material selection 316L stainless steel of described inflation awl with the inflation awl.
The processing of conical shell described in the utility model adopts the hydraulic pressure special tooling to make, and guarantees its upper and lower opening right alignment, must not be oval, and distortion etc.; Conical shell does not have corner angle or step, guarantees to seamlessly transit; Welding joint adopts complete penetraction and fusion in welding, conical shell longitudinal joint, cone two straight circumferential weld 100%PT; Because the aperture of through hole is 2-4mm, so the inflation awl before and after the start-stop car, guarantees inflation awl outside CO
2(or nitrogen) regulates the ftercompction all the time of protection gas, prevents that fine coal from entering gassy system by the eyelet refluence, and inside and outside differential pressure remains on 0.2Mpa, and the normal back pressure reduction of driving is adjusted to the process gas requirement, is controlled at about 10kpa CO
2(or nitrogen) pressure provides the high-pressure powdered coal system pressure.
The utility model good permeability, air flow height, fine coal do not have obstruction, bridging phenomenon.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
A kind of gasifying powder coal device is conical shell 1 with the inflation awl, and the angulus pyramidis α of described conical shell is 13 degree, has through hole 2 arranged in a uniform on conical shell 1 wall, and the aperture of described through hole 2 is 2-4mm.
1, inflation awl designing technique condition is:
(1), material: fine coal, CO
2(or nitrogen);
(2), service temperature: maximum/normal-110 ℃/80 ℃;
(3), fine coal flow: less than 67.65kg/s;
(4), pulverized coal particle density: 1400kg/m
3, fine coal tap density: 550kg/m
3
(5), gas flow: less than 0.1kg/s, gas density: 1.14kg/m
3
2, the selection of inflation awl material:
Owing to contain corrosive medium in the fine coal material, liquid phase medium especially appears, and the corrosion performance is stronger, the corrosion thing can stop up aeration aperture influences inside and outside differential pressure and air flow, and then cause its disabler, comprehensive working conditions and material property, material selection 316L stainless steel.
3, the design of cone angle:
The angle of repose of solid particulate is to estimate its mobile important basis: angle of repose is more little, and the solid particulate property that flows is good more, and only at angulus pyramidis during greater than the solid particulate angle of repose, solid particulate just can be relied on power for support and flow down along the equipment cone.Integrated equipment cone size, the angle [alpha] of design cone are 13 degree.
4, eyelet and air-flow distribute:
For the fluidizing agent that guarantees to charge into can not form big bias current on the inflation awl, can form the layer of even air film on the surface of inflation awl, reduce the surface friction of solid particulate and cone, the assurance blowing is smooth and easy, consider and to reduce inside and outside differential pressure as far as possible, improve the too thin factors such as inflating awl of easily stopping up of air flow and fine coal, have the through hole that arrangement is evenly fine and closely woven, eyelet is staggered on the conically shaped body wall of inflation awl, the aperture of described through hole is 2-4mm.
5, use operational requirement:
Because the aperture of through hole is 2-4mm, so the inflation awl before and after the start-stop car, guarantees inflation awl outside CO
2(or nitrogen) regulates the ftercompction all the time of protection gas, prevents that fine coal from entering gassy system by the eyelet refluence, and inside and outside differential pressure remains on 0.2Mpa, and the normal back pressure reduction of driving is adjusted to the process gas requirement, is controlled at about 10kpa CO
2(or nitrogen) pressure provides the high-pressure powdered coal system pressure.
6, operation instructions:
Inflation awl inside and outside differential pressure is 10kpa, proves that this internals permeability is good, the air flow height; The fine coal flow system flow is stable, reaches the flow design value, illustrates not have to stop up, and the bridging phenomenon reaches the design ideal effect.
Claims (2)
1. a gasifying powder coal device is conical shell with the inflation awl, and it is characterized in that: the angulus pyramidis α of described conical shell is the 12-13.5 degree, has through hole arranged in a uniform on the conically shaped body wall, and the aperture of described through hole is 2-4mm.
2. gasifying powder coal device according to claim 1 is characterized in that: the making material selection 316L stainless steel of described inflation awl with the inflation awl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201874572U CN201495203U (en) | 2009-09-10 | 2009-09-10 | Inflation cone for coal gas gasification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201874572U CN201495203U (en) | 2009-09-10 | 2009-09-10 | Inflation cone for coal gas gasification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201495203U true CN201495203U (en) | 2010-06-02 |
Family
ID=42438411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201874572U Expired - Fee Related CN201495203U (en) | 2009-09-10 | 2009-09-10 | Inflation cone for coal gas gasification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201495203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676233A (en) * | 2012-05-07 | 2012-09-19 | 北京盈德清大科技有限责任公司 | Air inflation awl for pulverized coal gasification device |
-
2009
- 2009-09-10 CN CN2009201874572U patent/CN201495203U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676233A (en) * | 2012-05-07 | 2012-09-19 | 北京盈德清大科技有限责任公司 | Air inflation awl for pulverized coal gasification device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20110910 |