CN201390732Y - Preheating coal-water slurry gasification nozzle with expansion section - Google Patents
Preheating coal-water slurry gasification nozzle with expansion section Download PDFInfo
- Publication number
- CN201390732Y CN201390732Y CN 200920009735 CN200920009735U CN201390732Y CN 201390732 Y CN201390732 Y CN 201390732Y CN 200920009735 CN200920009735 CN 200920009735 CN 200920009735 U CN200920009735 U CN 200920009735U CN 201390732 Y CN201390732 Y CN 201390732Y
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- CN
- China
- Prior art keywords
- water slurry
- expansion segment
- pipe core
- coal water
- expansion section
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- Expired - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
The utility model relates to a preheating coal-water slurry gasification nozzle with an expansion section, which comprises a central pipe with an expansion section, air inlets, an inner ring pipe, an outer sleeve, a gasification agent inlet and a coal-water slurry inlet, wherein two rows or a plurality of rows of the air inlets are arranged at the front half part of the central pipe with the expansion section, and the coal-water slurry inlet is arranged at the back end; a gap is reserved between the front end of the inner ring pipe and the middle of the expansion section of the central pipe, and the back end of the inner ring pipe is connected with the central pipe; the front end of the outer pipe of the outer sleeve is connected with the head of the expansion section of the central pipe, and the back end thereof is connected with the central pipe and is provided with the gasification agent inlet; the included angle of the air inlets and the axis of the central pipe is 30 degrees to 90 degrees, and the tilt angle is 0 degree to 70 degrees; and the front half part of the central pipe with the expansion section is made of wear-resistant, corrosion-resistant and high-temperature resistant metal material or is lined with high-temperature ceramic material.
Description
One, technical field
The utility model belongs to coal chemical technology, especially, relates to the nozzle of coal water slurry gasification.
Two, background technology
Gasification is the tap and the gordian technique of modern Coal Chemical Industry.In numerous gasification process, with the coal water slurry is raw material, with the oxygen-containing gas be the jet of vaporized chemical carry bed (or claiming air flow bed) technology owing to efficiency of carbon conversion, device structure is simple, easy to operate, vapor pressure is high, can satisfy subsequent technique etc. to be pressed into etc. be that people generally have an optimistic view of.The core of this technology is the gasification nozzle of coal water slurry.
United States Patent (USP) S.U.Pat.3705108,3743606 and Chinese patent CN1125163A a kind of coal-water-slurry gasification nozzle is disclosed respectively.These nozzles are triple channel (center and outer ring channel are the vaporized chemical passage, and interior ring passage is the coal water slurry passage) coal-water-slurry gasification nozzle, now use in the coal water slurry gasification process.Because the coal slurry in nozzle flow channel is in room temperature, but when burning, can produce the high temperature of 1500～1600K from the coal slurry of nozzle ejection, therefore, not only work under high temperature heat-flash shake condition in the end of nozzle, and order also will bear wearing and tearing and the corrosion to runner of the pressure, coal slurry of coal slurry.Although adopt the Wear-resistant, high-temperature resistant material and add measure such as cooling coil at nozzle-end, but because reasons in structure, the interior ring contracting nozzle position of coal water slurry can not obtain cooling, be in the hyperthermia radiation state always, the gouging abrasion of coal water slurry in addition, the work-ing life of nozzle, generally about 45 days, the longest use record did not surpass half a year, causes the production cost of coal slurry gasifier high.A kind of direct freezing type coal water slurry gasification nozzle that has expansion segment that Chinese patent ZL200720306001.4 proposes has well solved the cooling and the wear problem of jet hole, but complex structure, the not fine utilization of jet hole heat, atomizing effect also has the leeway of improving.
Three, summary of the invention
The purpose of this utility model is exactly to provide a kind of preheating coal water slurry gasification nozzle that has expansion segment for the deficiency that overcomes the prior art existence, this nozzle long service life, atomizing effect are good, the transformation efficiency advantages of higher of carbon, can satisfy the requirement of branch of industry to gasification nozzle.
The utility model relates to the preheating coal water slurry gasification nozzle that has expansion segment, comprises the pipe core that has expansion segment, interior endless tube, mixing section, air inlet port, outer sleeve, vaporized chemical import, coal water slurry import; The first half that has the pipe core of expansion segment is provided with the air inlet port of two row or multi-row, and the rear end is provided with the coal water slurry import; The space is left at the expansion segment middle part of interior endless tube front end and pipe core, and the rear end links to each other with pipe core; The front end of outer sleeve links to each other with the expansion segment head of pipe core, and the rear end links to each other with pipe core and the vaporized chemical import is set; Air inlet port and pipe core axis angle are 30～90 °, 0～70 ° at pitch angle; The first half material that has the pipe core of expansion segment is resistant to elevated temperatures metallic substance of wear-and corrosion-resistant or liner high temperature ceramic material.
Four, description of drawings
Fig. 1 is the preheating coal water slurry gasification nozzle structural representation that has expansion segment of the present utility model.
Wherein: endless tube 3-air inlet port 4-mixing section 5-pipe core 6-outer tube 7-vaporized chemical import 8-coal water slurry import in the 1-expansion segment 2-
Five, embodiment
Below in conjunction with accompanying drawing the utility model is described in detail, the preheating coal water slurry gasification nozzle that has expansion segment comprises the pipe core (5) that has expansion segment (1), interior endless tube (2), air inlet port (3), mixing section (4), outer sleeve (6), vaporized chemical import (7), coal water slurry import (8); The first half that has the pipe core (5) of expansion segment (1) is mixing section (4), is provided with the air inlet port (3) of two row or multi-row, and the rear end is provided with coal water slurry import (8); The space is left at expansion segment (1) middle part of interior endless tube (2) front end and pipe core (5), and the rear end links to each other with pipe core (5); The front end of outer sleeve (6) links to each other with expansion segment (1) head of pipe core (5), and the rear end links to each other with pipe core (5) and vaporized chemical import (7) is set; Air inlet port (3) is 30～90 ° with pipe core (5) axis angle, 0～70 ° at pitch angle; The first half material that has the pipe core (5) of expansion segment (1) is resistant to elevated temperatures metallic substance of wear-and corrosion-resistant or liner high temperature ceramic material.
When having the preheating coal water slurry gasification nozzle work of expansion segment, vaporized chemical enters in the outer sleeve (6) from vaporized chemical import (7), flow to expansion segment (1) at a high speed, through the space of interior endless tube (2) and expansion segment (1) turn flow in the annular space of endless tube (2) and mixing section (4), two row or multi-row air inlet port (3) jet of the mixing section (4) by pipe core (5) enters pipe core (5) then; Mix with the coal water slurry intense impact of pipe core (5), form good gas-liquid spray flow, eject expansion segment (1), form the coal water slurry atomizing cone by pipe core (5) single hole straight tube.Vaporized chemical obtains preheating, and the expansion segment of nozzle (1) wall temperature reduces, and has improved the wear resistance and corrosion resistance of pipe core (5) and expansion segment (1), thereby has prolonged the life-span of gasification nozzle greatly.
The preheating coal water slurry gasification nozzle that has expansion segment provided by the utility model utilizes the straight-through and expansion segment of single hole, has reduced the erosion of coal water slurry to nozzle spout surface; The direct coolant expansion section of vaporized chemical in addition greatly reduces the wall temperature of expansion segment, the intensity and the life-span of having improved nozzle material; Vaporized chemical and gas-liquid spray flow temperature improve in addition, viscosity reduces, long service life, atomizing effect are good, the transformation efficiency advantages of higher of carbon thereby the preheating coal water slurry gasification nozzle that has guaranteed to have expansion segment has, and can satisfy branch of industry it is changed the requirement of nozzle.
Claims (3)
1. the preheating coal water slurry gasification nozzle that has expansion segment, comprise the pipe core that has expansion segment, interior endless tube, mixing section, air inlet port, outer sleeve, vaporized chemical import, coal water slurry import, the first half that its technical characterictic is to have the pipe core of expansion segment is provided with the air inlet port of two row or multi-row, and the rear end is provided with the coal water slurry import; The space is left at the expansion segment middle part of interior endless tube front end and pipe core, and the rear end links to each other with pipe core; The front end of outer sleeve links to each other with the expansion segment head of pipe core, and the rear end links to each other with pipe core and the vaporized chemical import is set.
2. according to the preheating coal water slurry gasification nozzle that has expansion segment that claim 1 provided, it is characterized in that air inlet port and pipe core axis angle are 30～90 °, 0～70 ° at pitch angle.
3. according to the preheating coal water slurry gasification nozzle that has expansion segment that claim 1 provided, the first half material that it is characterized in that having the pipe core of expansion segment is resistant to elevated temperatures metallic substance of wear-and corrosion-resistant or liner high temperature ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920009735 CN201390732Y (en) | 2009-02-19 | 2009-02-19 | Preheating coal-water slurry gasification nozzle with expansion section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920009735 CN201390732Y (en) | 2009-02-19 | 2009-02-19 | Preheating coal-water slurry gasification nozzle with expansion section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201390732Y true CN201390732Y (en) | 2010-01-27 |
Family
ID=41597555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920009735 Expired - Lifetime CN201390732Y (en) | 2009-02-19 | 2009-02-19 | Preheating coal-water slurry gasification nozzle with expansion section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201390732Y (en) |
-
2009
- 2009-02-19 CN CN 200920009735 patent/CN201390732Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100127 Effective date of abandoning: 20090219 |
|
| RGAV | Abandon patent right to avoid regrant |