CN2460865Y - Multi-nozzle opposed water-coal or coal dust gasification furnace with nozzle on top - Google Patents
Multi-nozzle opposed water-coal or coal dust gasification furnace with nozzle on top Download PDFInfo
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- CN2460865Y CN2460865Y CN 01210097 CN01210097U CN2460865Y CN 2460865 Y CN2460865 Y CN 2460865Y CN 01210097 CN01210097 CN 01210097 CN 01210097 U CN01210097 U CN 01210097U CN 2460865 Y CN2460865 Y CN 2460865Y
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Abstract
The utility model relates to a multi-nozzle opposed water-coal or coal dust gasification furnace with nozzles on the top, which comprises a casing body 1, nozzles 2 on the top of the utility model, and a nozzle 3 at the rim of the casing body. The utility model is characterized in that an impact flow is formed in the gasification furnace by adopting the nozzles 2 on the top and the nozzle 3 at the rim. Therefore, the utility model is characterized in that the mixture is consolidated, the rate of heat and mass transmission is increased, the average residence time of raw material grains is prolonged, the conversion rate of charcoal is evidently increased, the combustible content in ash dregs is reduced, the amount of gas release, the effective period components and the water vapour decomposition rate of unit mass raw materials are increased, the conversion rate of charcoal can reach more than 98 per cent, and the water vapour decomposition rate can reach more than 40 per cent.
Description
The utility model belongs to the coal gasification field, relates to a kind of water-coal-slurry or pulverized coal gasification furnace.
The cleaning of coal and efficient utilization are the great technical tasks in current China energy and environment protection field, also are one of key technologies of Chinese national economy sustainable development.Coal gasification is the main path that primary energy is converted into clean secondary energy sources, and its product is fuel gas (coal gas), synthesis gas, reducing gases, hydrogen, carbon monoxide.The fields such as preparation that the coal gasification technology is done industry, the production of sponge iron, the preparation of pure carbon monoxide, pure hydrogen at combined cycle (IGCC) TRT, synthetic ammonia and synthesizing methanol industry, producing acetic acid by carbonylation method and vinegar have obtained using widely, and gasification furnace then is the key equipment of coal gasification.For this reason, numerous scientific and technical personnel study, have developed various types of gasification furnaces.At present, in the technology that adopts air flow bed (fluid injected bed, carry bed) to gasify, representationally mainly contain two kinds: adopting water-coal-slurry is that the gasification furnace of raw material has Texaco (Texaco); Employing dry coal powder is that the gasification furnace of raw material has Xie Er (Shell), document U.S.Pat.Nos.4,637,823,4,527,997,5,281,243 disclose Texaco gasifier respectively, and the geometric properties of this gasification furnace is nozzle-axis and coal gas and melt cinder outlet dead in line, and the both is on the gasification furnace main body axis.In view of this gasification furnace is an air flow bed, thereby cause partial material (stream thigh) short circuit.Our experiment test shows, if material mean residence time in the type gasification furnace is 5 seconds, in fact, wherein the partial material time of staying is less than outside 1 second stove of promptly overflowing, and another part material in stove the time of staying considerably beyond 5 seconds.That is to say that the time of staying of material in this gasification furnace is a very wide distribution, the material that 50%-60% arranged is just overflowed less than mean residence time outside the stove.In addition, its mixed effect is unsatisfactory.For above-mentioned reasons.The efficiency of carbon con version of Texaco gasifier is generally less than 95%, and the steam resolution ratio is also less than 20%; Document U.S.92-960345 discloses the Xie Er gasification furnace.Coal gas and melt cinder are reverse flow, and promptly coal gas makes progress, and melt cinder is downward.Its shortcoming has two, one, and melt cinder is followed because of no heating gas, very easily solidifies and stops up slag notch; Its two, the tiny cinder that is suspended in the coal gas stream will pass through the longer pipe road, and the change flow direction, just can enter upstream device and carry out waste heat recovery or gas solid separation, pipeline and upstream device stop up easily, the both can shorten the operation cycle.
Defective in view of last two kinds of type of furnaces, Chinese patent 98110601.3 discloses a kind of multiinjector opposed type water-coal-slurry or pulverized coal gasification furnace, this gasification furnace has carried out the running of pilot-scale, efficiency of carbon con version is more than 98%, higher more than 3 percentage points than Texaco stove, hang down 5%～7% respectively than oxygen consumption with than consumption of coal.Facts have proved that this gasification furnace continues room for improvement in addition, efficiency of carbon con version also can further improve.
The objective of the invention is to the structure of existing gasification furnace is further optimized, disclose multiinjector opposed type water-coal-slurry or pulverized coal gasification furnace that a kind of top is provided with nozzle, to satisfy the needs of branch of industry.
Design of the present invention is such: because the quality of water-coal-slurry and coal dust gasification effect, remove outside the Pass physics, chemical property with coal have, under certain process conditions, it is relevant that main and nozzle arrangements and size, nozzle arrangement, gasification furnace structure and size and three are mated the fluid flow behavior and the flow field structure of formation when realizing gasification.That is to say that in coal and process conditions one timing, CONCENTRATION DISTRIBUTION, Temperature Distribution and the time of staying that the gasification result quality depends primarily in the stove distribute.Under the high temperature of gasification furnace, chemical reaction rate is quite fast, and gasification is controlled by heat and mass transfer process, and the transmittance process and the time of staying distribute and depend primarily on stove interior fluid behavior and flow field structure.Therefore the present invention is provided with one or more nozzles again at the top of Chinese patent 98110601.3 disclosed multiinjector opposed type water-coal-slurry or pulverized coal gasification furnace, feed coal (water-coal-slurry or dry coal powder) or other HC fuel and gasifying agent, enter burner hearth by nozzle with mode of jet, jet stream thigh from different spray nozzles clashes in burner hearth mutually, because inertia, fuel particle produces repeatedly damped vibration in burner hearth, the time of staying of fuel particle in burner hearth increased; Turbulence intensity significantly increases simultaneously, heat and mass speed is increased substantially, thereby improved the resolution ratio of the efficiency of carbon con version and the water vapour of fuel.
Realize the technical scheme of the object of the invention:
The body of heater of the said gasification furnace of the present invention is an assembly, comprises housing and nozzle.
Said nozzle is arranged on the top and the housing same horizontal plane of periphery or a plurality of horizontal plane of housing.And with mechanical method fixation in the nozzle box, the axis of top jet nozzle and housing axis coincide, the nozzle of housing periphery and gasification furnace main body axis are perpendicular.Outlet is arranged on the gasification furnace bottom, and links with mechanical means and upstream device, and coal gas and melt cinder discharge out of the furnace from outlet, enter shock chamber or waste heat boiler.
Said nozzle can adopt conventional nozzle, when being raw material with the water-coal-slurry, then can preferentially adopt Chinese patent CN1125163A disclosed a kind of " three-way channel combined water coal slurry gasification nozzle that has cyclone "; The gasification furnace housing also is provided with several thermocouple holes and land surface pyrometer.
To do detailed elaboration to the present invention by accompanying drawing below.
Fig. 1 is the structure diagram of gasification furnace.
As seen from Figure 1, the body of heater of the said gasification furnace of the present invention is an assembly, comprises housing 1, top jet nozzle 2 and housing periphery nozzle 3, and with mechanical method fixation in nozzle box 4;
Said top jet nozzle 2 is arranged on the top of housing, and the axis of top jet nozzle 2 and housing 1 axis coincide;
Said housing periphery nozzle 3 is arranged on housing 1 peripheral same horizontal plane or a plurality of horizontal plane.The nozzle 3 of housing periphery is perpendicular with the gasification furnace main body axis;
Outlet 5 is arranged on the gasification furnace bottom, and links with mechanical means and upstream device, and coal gas and melt cinder discharge out of the furnace from exporting 5, enter shock chamber or waste heat boiler.
Said gasification furnace is a raw material with water-coal-slurry, dry coal powder or hydrocarbons, and the solid content of water-coal-slurry is 50～70%; Also need add water vapour when being raw material with the dry coal powder, steam is 0.05～0.65kg/kg with the ratio of fuel carbon, be that a kind of in 93%～99.8% pure oxygen, air or the oxygen enrichment is oxidant (also claiming gasifying agent) with oxygen content all during above-mentioned various material gasification, oxygen is 0.4～1.6M with the ratio of fuel carbon
3(standard conditions)/kg, operating pressure are 0.1～12Mpa, and operating temperature is 1250 ℃～1550 ℃.
Said gasification furnace can be used for combined cycle (IGCC) TRT, also can be used for preparing the required unstripped gas of synthetic ammonia, synthesizing methanol, producing acetic acid by carbonylation method and aceticanhydride, the production of the production of sponge iron, the production of carbon monoxide, pure hydrogen or the gasification process of combustiblerefuse.
The said gasification furnace of the present invention has very significant advantage:
Adopt top jet nozzle 2 and peripheral nozzle 3, in gasification furnace, form percussion flow, its fluid behavior and flow field structure help atomizing and disperse, strengthen mixing, improved the caloic transfer rate, prolonged the mean residence time of feed particles, they all will significantly improve gasification result, promptly improve efficiency of carbon con version, reduce combustible content in the lime-ash, increase the resolution ratio of gas forming amount, term of validity composition and the steam of unit mass raw material.The conversion ratio of carbon can reach more than 98%, and the resolution ratio of steam can reach more than 40%.
Claims (2)
1. a top is provided with the multiinjector opposed type water-coal-slurry or the pulverized coal gasification furnace of nozzle, comprises housing (1) and housing periphery nozzle (3), it is characterized in that this gasification furnace also comprises the top jet nozzle (2) that is arranged on top of gasification furnace.
2. gasification furnace as claimed in claim 1 is characterized in that, the axis of the axis of said top jet nozzle (2) and housing (1) coincides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01210097 CN2460865Y (en) | 2001-01-09 | 2001-01-09 | Multi-nozzle opposed water-coal or coal dust gasification furnace with nozzle on top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01210097 CN2460865Y (en) | 2001-01-09 | 2001-01-09 | Multi-nozzle opposed water-coal or coal dust gasification furnace with nozzle on top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2460865Y true CN2460865Y (en) | 2001-11-21 |
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ID=33629712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01210097 Expired - Lifetime CN2460865Y (en) | 2001-01-09 | 2001-01-09 | Multi-nozzle opposed water-coal or coal dust gasification furnace with nozzle on top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2460865Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1959002A1 (en) | 2007-02-14 | 2008-08-20 | Yankuang Group Corporation Limited | Method of gasification burner online feeding |
| CN101003755B (en) * | 2006-01-19 | 2010-09-29 | 神华集团有限责任公司 | Gasification stove with multi nozzle, and gasification method |
| CN101985568A (en) * | 2010-10-02 | 2011-03-16 | 上海交通大学 | Two-stage oxygen supply dry slag removal pressurized gas flow bed gasification furnace |
| CN102161912A (en) * | 2010-12-17 | 2011-08-24 | 中原工学院 | Coal water slurry gasifying furnace with five nozzles |
| CN102492477A (en) * | 2011-11-11 | 2012-06-13 | 上海交通大学 | Hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle |
| CN102816605A (en) * | 2012-08-30 | 2012-12-12 | 上海锅炉厂有限公司 | Two-section type multi-nozzle gasifying furnace with hierarchical oxygen supplying function and gasifying method of gasifying furnace |
| CN102827642A (en) * | 2012-09-28 | 2012-12-19 | 中国船舶重工集团公司第七一一研究所 | Load-adjustable step feeding type entrained flow bed gasifier |
| CN106350117A (en) * | 2015-07-16 | 2017-01-25 | 华东理工大学 | Gasification furnace and application thereof, as well as gasification method for carbon-containing material |
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
-
2001
- 2001-01-09 CN CN 01210097 patent/CN2460865Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003755B (en) * | 2006-01-19 | 2010-09-29 | 神华集团有限责任公司 | Gasification stove with multi nozzle, and gasification method |
| EP1959002A1 (en) | 2007-02-14 | 2008-08-20 | Yankuang Group Corporation Limited | Method of gasification burner online feeding |
| CN101985568A (en) * | 2010-10-02 | 2011-03-16 | 上海交通大学 | Two-stage oxygen supply dry slag removal pressurized gas flow bed gasification furnace |
| CN101985568B (en) * | 2010-10-02 | 2013-05-01 | 上海交通大学 | Two-stage oxygen supply dry slag removal pressurized gas flow bed gasification furnace |
| CN102161912A (en) * | 2010-12-17 | 2011-08-24 | 中原工学院 | Coal water slurry gasifying furnace with five nozzles |
| CN102492477A (en) * | 2011-11-11 | 2012-06-13 | 上海交通大学 | Hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle |
| CN102816605A (en) * | 2012-08-30 | 2012-12-12 | 上海锅炉厂有限公司 | Two-section type multi-nozzle gasifying furnace with hierarchical oxygen supplying function and gasifying method of gasifying furnace |
| CN102827642A (en) * | 2012-09-28 | 2012-12-19 | 中国船舶重工集团公司第七一一研究所 | Load-adjustable step feeding type entrained flow bed gasifier |
| CN102827642B (en) * | 2012-09-28 | 2014-10-29 | 中国船舶重工集团公司第七一一研究所 | Load-adjustable step feeding type entrained flow bed gasifier |
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
| CN106350117A (en) * | 2015-07-16 | 2017-01-25 | 华东理工大学 | Gasification furnace and application thereof, as well as gasification method for carbon-containing material |
| CN106350117B (en) * | 2015-07-16 | 2019-06-04 | 华东理工大学 | A kind of gasification process of gasification furnace, its application and carbonaceous material |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110109 Granted publication date: 20011121 |