CN201517093U - Circulating fluidized bed coal grading conversion coal gas tar semi-coke poly-generation device - Google Patents
Circulating fluidized bed coal grading conversion coal gas tar semi-coke poly-generation device Download PDFInfo
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- CN201517093U CN201517093U CN2009201977846U CN200920197784U CN201517093U CN 201517093 U CN201517093 U CN 201517093U CN 2009201977846 U CN2009201977846 U CN 2009201977846U CN 200920197784 U CN200920197784 U CN 200920197784U CN 201517093 U CN201517093 U CN 201517093U
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Abstract
The utility model discloses a circulating fluidized bed coal grading conversion coal gas tar semi-coke poly-generation device, which closely combines a circulating fluidized bed gasification stove and a fluidized bed gas retort, wherein the gas retort is a normal pressure fluidized bed, recycling coal gas is used as a fluidized medium, fuel is firstly heated and cracked in the gas retort, and evaporation components comprising coal gas and tar with high thermal values are precipitated, heat absorbing of the gas retort is supplied by high temperature thermal circulation materials of the circulating fluidized bed gasification stove, semi-coke portions are discharged through the bottom portion of the gas retort after coal is retorted and cooled, and partial semi-coke portions are conveyed into the circulating fluidized bed gasification stove for gasifying and heating circulated materials along circulated materials. Middle-temperature coal gas from the gas retort is dedusted, and cooled and tar recycled by a coal gas purifying system, output of the purified coal gas is for industries and households, thereby poly generation of the coal gas, the tar and semi-coke in a device is achieved, and the grading conversion and highly-effective comprehensive utilization of coal are achieved.
Description
Technical field
The utility model relates to combustion unit, relates in particular to a kind of circulating fluidized bed coal grading and transforms gas tar semicoke multi-joint-production apparatus.
Background technology
The energy reserve structure of China is rich coal, weak breath, oil-poor.The scarcity of China's oil resource makes the external interdependency of 2008 China's oil reach 50%, and expecting the year two thousand twenty will be above 60%, and this will make China very easily be subjected to the impact that international petroleum market changes.The coal status that in China's primary energy source, has overwhelming superiority, however coal utilization efficient is low, seriously polluted at present.Obviously, energy problem has become one of bottleneck of the national economic development.Therefore, the new technology of comprehensive utilization of exploitation coal high-efficiency and low pollution emission is the top priority of present China energy field.
The polygenerations systeme of coal is this angle of resource of industries such as electric power, chemical industry, metallurgy from coal simultaneously, at the characteristic of coal, realizes the classification utilization, products such as production chemical product, liquid fuel in same system.Like this, polygenerations systeme can be from the height of system, superiority in conjunction with various production technology routes, production process is coupled, reach that efficiency of energy utilization is the highest, energy consumption is minimum, pollution is minimum, investment and running cost are saved most, solve the control problem of pollutent in the coal utilization process with most economical method.Therefore, by Poly-generation technology, can really realize the efficient clean utilization of coal.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of circulating fluidized bed coal grading to transform gas tar semicoke multi-joint-production apparatus.
The circulating fluidized bed coal grading transforms gas tar semicoke multi-joint-production apparatus and comprises fluidized bed dry distillation stove and circle fluidized-bed gasification furnace; The fluidized bed dry distillation stove is the little down macrostructure of going up, the top of fluidized bed dry distillation stove is freeboard of fluidized bed, the bottom of fluidized bed dry distillation stove is an emulsion zone, the bottom of fluidized bed dry distillation stove is provided with air compartment, the top of circle fluidized-bed gasification furnace is freeboard of fluidized bed, the bottom of circle fluidized-bed gasification furnace is an emulsion zone, the bottom of circle fluidized-bed gasification furnace is provided with air compartment, fluidized bed dry distillation stove emulsion zone joins by material returning device and circle fluidized-bed gasification furnace, the circle fluidized-bed gasification furnace freeboard of fluidized bed joins with fluidized bed dry distillation stove emulsion zone and circle fluidized-bed gasification furnace emulsion zone respectively through vapourizing furnace high-temperature separator and two-way material returning device, fluidized bed dry distillation stove freeboard of fluidized bed joins with gas retort separator and gas cleaning system successively, fluidized bed dry distillation stove freeboard of fluidized bed is provided with second coal feeding hole, the fluidized bed dry distillation furnace bottom is provided with row's semicoke mouth and the bottom air compartment is provided with gas retort fluidized wind inlet, the circle fluidized-bed gasification furnace freeboard of fluidized bed is provided with first coal feeding hole, and the circle fluidized-bed gasification furnace emulsion zone is provided with dust inlet and the bottom air compartment is provided with vapourizing furnace fluidized wind inlet.
Described two-way material returning device top is feed chamber and the discharge chamber of being interconnected, and two-way material returning device bottom is provided with 2 air compartments, and the feed chamber bottom is provided with variable valve.
Described material returning device top is pan feeding chamber and the returning charge chamber that is interconnected, and the material returning device bottom is provided with 2 air compartments.
Described fluidized bed dry distillation stove, the normal pressure operation, operating temperature is 500～700 ℃, thereby realize the medium temperature carbonization of coal, reach higher tar yield, the emulsion zone fluidising air velocity is 3-4m/s, and the freeboard of fluidized bed wind speed is 1-2m/s, coal supply the fluidized bed dry distillation stove bottom emulsion zone residence time greater than 1 minute, fluidized bed dry distillation stove freeboard of fluidized bed upper space height will guarantee enough flying dust transport disengaging heights.
Described circle fluidized-bed gasification furnace, the vaporized chemical of employing are water vapor, air or oxygen mixture, the normal pressure operation, and operating temperature is 800～1000 ℃, the emulsion zone fluidising air velocity is 4-6m/s.
Described two-way material returning device adopts the superheated vapour air blast, can realize sending fluidized bed dry distillation stove and circle fluidized-bed gasification furnace respectively with the isolating high-temperature material of high-temperature separator, stop gas to seal in the vapourizing furnace high-temperature separator simultaneously, and regulate fluidized bed dry distillation stove and two stove recycle stocks of the circle fluidized-bed gasification furnace amount of entering through quantity of steam and variable valve that two-way material returning device inlet mouth blasts by control from fluidized bed dry distillation stove and circle fluidized-bed gasification furnace.
Described material returning device adopts the superheated vapour air blast, realization is delivered to circle fluidized-bed gasification furnace with the semicoke and the high-temperature material of fluidized bed dry distillation stove, stop gas to seal in the fluidized bed dry distillation stove simultaneously, and regulate the recycle stock amount through the quantity of steam that the material returning device inlet mouth blasts by control from circle fluidized-bed gasification furnace.
The beneficial effect that the utility model compared with prior art has
1) the utility model technology is combined closely circle fluidized-bed gasification furnace and gas retort, is implemented in the combination producing of coal gas, tar, semicoke in the cover system, has realized the rational and efficient use of the various compositions of coal.
2) adopt circulating fluidized bed solid thermal carriers and medium temperature carbonization technology, the tar yield height that device produces, oil extracting rate can reach more than 80%, and caloric power of gas is higher, can reach 20Mj/Nm
3More than, CO content is low, satisfies the relevant domestic gas regulation of country, compares with gas retort with similar domestic gas stove, and technology is simple, reduced investment, running cost is low.
3) adopt ciculation fluidized bed gasification technology, semicoke gasifies after the destructive distillation, produce coal gas can directly burn steam, heat supply and generating or use as the chemical industry synthetic gas, make that gas and solid composition are all reasonably made full use of in the fuel.Therefore, the device fuel availability is higher, can reach more than 90%.
4) the fired basis fugitive constituent all is applicable to this technology at the various coals more than 20%, this technology does not have special requirement to coal particle size yet, just adopt the required coal particle size of ordinary cycle bed, this has just been avoided existing domestic gasization and distillation process coal and coal particle size to be had the shortcoming of strict restriction.Therefore, the fuel tolerance of device is wide.
5) native system adopts classification to transform, and sulphur, nitrogen pollutant discharge low, and energy transformation efficiency height is really realized energy-saving and emission-reduction.
Description of drawings
Accompanying drawing is that the circulating fluidized bed coal grading transforms gas tar semicoke multi-joint-production apparatus structural representation
Among the figure: vapourizing furnace fluidized wind inlet 1, dust inlet 2, circle fluidized-bed gasification furnace 3, first coal feeding hole 4, vapourizing furnace high-temperature separator 5, gasification gas outlet 6, feed chamber 7, discharge chamber 8, two-way material returning device 9, high-temperature ash variable valve 10, two-way material returning device inlet mouth 11, pan feeding chamber 12, returning charge chamber 13, material returning device inlet mouth 14, material returning device 15, gas retort fluidized wind inlet 16, fluidized bed dry distillation stove 17, row's semicoke mouth 18, second coal feeding hole 19, gas retort separator 20, gas cleaning system 21.
Embodiment
As shown in drawings, circulating fluidized bed coal grading conversion gas tar semicoke multi-joint-production apparatus comprises fluidized bed dry distillation stove 17 and circle fluidized-bed gasification furnace 3; Fluidized bed dry distillation stove 17 is the little down macrostructure of going up, the top of fluidized bed dry distillation stove 17 is freeboard of fluidized bed, the bottom of fluidized bed dry distillation stove 17 is an emulsion zone, the bottom of fluidized bed dry distillation stove 17 is provided with air compartment, the top of circle fluidized-bed gasification furnace 3 is freeboard of fluidized bed, the bottom of circle fluidized-bed gasification furnace 3 is an emulsion zone, the bottom of circle fluidized-bed gasification furnace 3 is provided with air compartment, fluidized bed dry distillation stove 17 emulsion zones join by material returning device 15 and circle fluidized-bed gasification furnace 3, circle fluidized-bed gasification furnace 3 freeboard of fluidized bed join with fluidized bed dry distillation stove 17 emulsion zones and circle fluidized-bed gasification furnace 3 emulsion zones respectively through vapourizing furnace high-temperature separator 5 and two-way material returning device 9, fluidized bed dry distillation stove 17 freeboard of fluidized bed join with gas retort separator 20 and gas cleaning system 21 successively, fluidized bed dry distillation stove 17 freeboard of fluidized bed are provided with second coal feeding hole 19, fluidized bed dry distillation stove 17 bottoms are provided with row's semicoke mouth 18 and the bottom air compartment is provided with gas retort fluidized wind inlet 16, circle fluidized-bed gasification furnace 3 freeboard of fluidized bed are provided with first coal feeding hole 4, and circle fluidized-bed gasification furnace 3 emulsion zones are provided with dust inlet 2 and the bottom air compartment is provided with vapourizing furnace fluidized wind inlet 1.
Described two-way material returning device 9 tops are feed chamber 7 and the discharge chamber 8 of being interconnected, discharge chamber 8 is connected with fluidized bed dry distillation stove 17 emulsion zones, feed chamber 7 lower side are provided with high-temperature ash variable valve 10 and are connected with circle fluidized-bed gasification furnace 3 emulsion zones, and two-way material returning device 9 bottoms are provided with 2 air compartments and 2 two-way material returning device inlet mouths 11 of corresponding layout.Described material returning device 15 tops are pan feeding chamber 12 and the returning charge chamber 13 that is interconnected, pan feeding chamber 12 is connected with fluidized bed dry distillation stove 17 emulsion zones, returning charge chamber 13 is connected with circle fluidized-bed gasification furnace 3 emulsion zones, and material returning device 15 bottoms are provided with 2 air compartments and 2 material returning device inlet mouths 14 of corresponding layout.
The circulating fluidized bed coal grading transforms gas tar semicoke Poly-generation method: fluidized bed dry distillation stove 17 usefulness recirculation coal gas blast as fluidized wind through gas retort fluidized wind inlet 16, coal feeds fluidized bed dry distillation stove 17 through second coal feeding hole 19 to be mixed with high-temperature material, coal at first is subjected to thermo-cracking, separate out the high heating value fugitive constituent and comprise coal gas and tar, semicoke after the dry distillation of coal, part can directly be discharged from fluidized bed dry distillation furnace bottom row semicoke mouth 18, act as a fuel or the metallurgical coke product, the part semicoke is sent into circle fluidized-bed gasification furnace 3 by material returning device 15, semicoke produces heat with the vaporized chemical reaction that blasts through vapourizing furnace fluidized wind inlet 1, heating warm recycle stock from fluidized bed dry distillation stove 17 becomes high-temperature material to be separated and two-way material returning device 9 is delivered to fluidized bed dry distillation stove 17 and provided destructive distillation to absorb heat through vapourizing furnace high-temperature separator 5, the gasification gas that circle fluidized-bed gasification furnace 3 produces is directly used in burning and steams, heat supply and generating or use as the chemical industry synthetic gas, from fluidized bed dry distillation stove 17 come out warm coal gas through 20 dedustings of gas retort separator, gas cleaning system 21 coolings, after reclaiming tar, dry distillation gas part loopback fluidized bed dry distillation stove 17 after the purification is as fluidizing agent, and part output is for industry and civilian.Gas retort separator 20 isolating dust employing steam are sent into vapourizing furnace through circle fluidized-bed gasification furnace bottom dust inlet 2 and are gasified, and realize the combination producing of coal gas, tar, semicoke in the covering device thus, thereby realize the high-efficiency comprehensive utilization of coal.
Described fluidized bed dry distillation stove 17, the normal pressure operation, operating temperature is 500～700 ℃, thereby realize the medium temperature carbonization of coal, reach higher tar yield, the emulsion zone fluidising air velocity is 3-4m/s, and the freeboard of fluidized bed wind speed is 1-2m/s, coal supply is 1～3 minute in the fluidized bed dry distillation stove bottom emulsion zone residence time, and fluidized bed dry distillation stove freeboard of fluidized bed upper space height will guarantee enough flying dust transport disengaging heights.Described circle fluidized-bed gasification furnace 3, the vaporized chemical of employing are water vapor, air or oxygen mixture, the normal pressure operation, and operating temperature is 800～1000 ℃, the emulsion zone fluidising air velocity is 4-6m/s.Described two-way material returning device 9 adopts the superheated vapour air blast, can realize sending fluidized bed dry distillation stove 17 and circle fluidized-bed gasification furnace 3 respectively with high-temperature separator 5 isolating high-temperature materials, stop gas to seal in vapourizing furnace high-temperature separator 5 simultaneously, and regulate fluidized bed dry distillation stove 17 and 3 two stove recycle stocks of the circle fluidized-bed gasification furnace amount of entering through quantity of steam and high-temperature ash variable valve 10 that two-way material returning device inlet mouth 11 blasts by control from fluidized bed dry distillation stove and circle fluidized-bed gasification furnace.Described material returning device 15 adopts the superheated vapour air blast, realization is delivered to circle fluidized-bed gasification furnace 3 with the semicoke and the high-temperature material of fluidized bed dry distillation stove 17, stop gas to seal in the fluidized bed dry distillation stove simultaneously, and regulate the recycle stock amount through the quantity of steam that material returning device inlet mouth 14 blasts by control from circle fluidized-bed gasification furnace.
Described circulating fluidized bed coal grading transforms gas tar semicoke Poly-generation method, circle fluidized-bed gasification furnace 3 and fluidized bed dry distillation stove 17 are combined closely, adopt circulating fluidized bed high temperature circulation material that the middle temperature quick destructive distillation of coal in the fluidized bed dry distillation stove is provided, realize the combination producing of coal gas, tar, semicoke, the various compositions of coal are rationally transformed, thereby realize the high-efficiency comprehensive utilization of coal.
Claims (3)
1. a circulating fluidized bed coal grading transforms gas tar semicoke multi-joint-production apparatus, it is characterized in that comprising fluidized bed dry distillation stove (17) and circle fluidized-bed gasification furnace (3); Fluidized bed dry distillation stove (17) is the little down macrostructure of going up, the top of fluidized bed dry distillation stove (17) is freeboard of fluidized bed, the bottom of fluidized bed dry distillation stove (17) is an emulsion zone, the bottom of fluidized bed dry distillation stove (17) is provided with air compartment, the top of circle fluidized-bed gasification furnace (3) is freeboard of fluidized bed, the bottom of circle fluidized-bed gasification furnace (3) is an emulsion zone, the bottom of circle fluidized-bed gasification furnace (3) is provided with air compartment, fluidized bed dry distillation stove (17) emulsion zone joins by material returning device (15) and circle fluidized-bed gasification furnace (3), circle fluidized-bed gasification furnace (3) freeboard of fluidized bed joins with fluidized bed dry distillation stove (17) emulsion zone and circle fluidized-bed gasification furnace (3) emulsion zone respectively through vapourizing furnace high-temperature separator (5) and two-way material returning device (9), fluidized bed dry distillation stove (17) freeboard of fluidized bed joins with gas retort separator (20) and gas cleaning system (21) successively, fluidized bed dry distillation stove (17) freeboard of fluidized bed is provided with second coal feeding hole (19), fluidized bed dry distillation stove (17) the bottom row's of being provided with semicoke mouth (18) and bottom air compartment are provided with gas retort fluidized wind inlet (16), circle fluidized-bed gasification furnace (3) freeboard of fluidized bed is provided with first coal feeding hole (4), and circle fluidized-bed gasification furnace (3) emulsion zone is provided with dust inlet (2) and the bottom air compartment is provided with vapourizing furnace fluidized wind inlet (1).
2. a kind of circulating fluidized bed coal grading according to claim 1 transforms gas tar semicoke multi-joint-production apparatus, it is characterized in that, described two-way material returning device (9) top is feed chamber that is interconnected (7) and discharge chamber (8), discharge chamber (8) is connected with fluidized bed dry distillation stove (17) emulsion zone, feed chamber (7) lower side is provided with high-temperature ash variable valve (10) and is connected with circle fluidized-bed gasification furnace (3) emulsion zone, and two-way material returning device (9) bottom is provided with 2 air compartments and 2 two-way material returning device inlet mouths of corresponding layout (11).
3. a kind of circulating fluidized bed coal grading according to claim 1 transforms gas tar semicoke multi-joint-production apparatus, it is characterized in that, described material returning device (15) top is pan feeding chamber (12) and returning charge chamber (13) that are interconnected, pan feeding chamber (12) is connected with fluidized bed dry distillation stove (17) emulsion zone, returning charge chamber (13) is connected with circle fluidized-bed gasification furnace (3) emulsion zone, and material returning device (15) bottom is provided with 2 air compartments and 2 material returning device inlet mouths of corresponding layout (14).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201977846U CN201517093U (en) | 2009-09-30 | 2009-09-30 | Circulating fluidized bed coal grading conversion coal gas tar semi-coke poly-generation device |
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| CN2009201977846U CN201517093U (en) | 2009-09-30 | 2009-09-30 | Circulating fluidized bed coal grading conversion coal gas tar semi-coke poly-generation device |
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| CN201517093U true CN201517093U (en) | 2010-06-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691501B (en) * | 2009-09-30 | 2013-03-06 | 浙江大学 | Coal-grading conversion poly-generation device and method for producing coal gas, tar and carbocoal on circulating fluid bed |
| US9393514B2 (en) | 2011-03-28 | 2016-07-19 | Ihi Corporation | Tar removal device |
| CN107022367A (en) * | 2017-02-28 | 2017-08-08 | 武汉天颖环境工程股份有限公司 | A kind of pyrolysis gas of biomass circulating purification system |
| CN112080295A (en) * | 2020-06-12 | 2020-12-15 | 广州环渝能源科技有限公司 | Sealed carbon discharging method |
-
2009
- 2009-09-30 CN CN2009201977846U patent/CN201517093U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691501B (en) * | 2009-09-30 | 2013-03-06 | 浙江大学 | Coal-grading conversion poly-generation device and method for producing coal gas, tar and carbocoal on circulating fluid bed |
| US9393514B2 (en) | 2011-03-28 | 2016-07-19 | Ihi Corporation | Tar removal device |
| CN107022367A (en) * | 2017-02-28 | 2017-08-08 | 武汉天颖环境工程股份有限公司 | A kind of pyrolysis gas of biomass circulating purification system |
| CN112080295A (en) * | 2020-06-12 | 2020-12-15 | 广州环渝能源科技有限公司 | Sealed carbon discharging method |
| CN112080295B (en) * | 2020-06-12 | 2021-09-14 | 广州环渝能源科技有限公司 | Sealed carbon discharging method |
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Granted publication date: 20100630 Effective date of abandoning: 20090930 |
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