CN101255987B - Circulating system of combustion gasification materiel for double fluidized bed - Google Patents
Circulating system of combustion gasification materiel for double fluidized bed Download PDFInfo
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- CN101255987B CN101255987B CN2008100595971A CN200810059597A CN101255987B CN 101255987 B CN101255987 B CN 101255987B CN 2008100595971 A CN2008100595971 A CN 2008100595971A CN 200810059597 A CN200810059597 A CN 200810059597A CN 101255987 B CN101255987 B CN 101255987B
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- chamber
- fluidized bed
- feed space
- controlling device
- returning
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- 238000002309 gasification Methods 0.000 title claims abstract description 48
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 72
- 239000003245 coal Substances 0.000 abstract description 6
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 230000008929 regeneration Effects 0.000 abstract description 3
- 238000011069 regeneration method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 206010020843 Hyperthermia Diseases 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000036031 hyperthermia Effects 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The present invention discloses a double fluidized beds combustion-gasification material circulating system comprising a fluidized bed gasification furnace and a circulating fluidized bed combustion furnace; the middle portion of the fluidized bed gasification furnace is connected with a material charging chamber of a material returning chamber, and then is connected with the lower portion of the circulating fluidized bed combustion furnace through a material discharging chamber of the material returning device; the upper portion of the circulating fluidized bed is connected to a material charging chamber of a bi-directional material control device through a hyperthermia separator, then is divided into two paths, one path is connected with the lower portion of the fluidized bed gasification furnace through a hyperthermia conical valve on the side surface of the material charging chamber of the bi-directional material control chamber, and the other path is connected with the lower portion of the circulating fluidized bed combustion furnace through the material returning chamber of the bi-directional material control chamber. The circulating fluidized bed combustion furnace and the fluidized bed gasification furnace are combined tightly to implement gasification, combustion, classification and conversion of coal in one set of system, which leads to highly efficiency conversion of coal; the inventive system is also can be used broadly in combustion, gasification, catalysis and regeneration processes.
Description
Technical field
The present invention relates to burner, relate in particular to a kind of circulating system for double fluidized bed combustion gasification materiel.
Background technology
In extensive use of double-fluidized-bed system and burning, gasification, metallurgy, catalysis and the regeneration technology, wherein the high temperature circulation Material control between two stoves is crucial, and prior art adopts ways such as strength conveying or the conveying of high temperature flood dragon machinery, system complex, poor reliability.Particularly to the combustion gasification system, should realize a large amount of high temperature circulation materials circulating between two stoves, prevent that again coal gas and flue gas from ganging up between two stoves, prior art is difficult to solve.The present invention is on the basis of existing Circulating Fluidized Bed loop control technology, and the method that adopts fluid bed material returning device and tapered control valve to combine is effectively controlled the solid material circulation of fluidized bed combustion gasification system, and stoped gas to be ganged up between two.
Summary of the invention
The purpose of this invention is to provide a kind of circulating system for double fluidized bed combustion gasification materiel.
Circulating system for double fluidized bed combustion gasification materiel comprises fluidized-bed gasification furnace and CFBC stove; Fluidized-bed gasification furnace middle part is connected with the material returning device pan feeding chamber of material returning device, and after the material returning device discharge chamber be connected with CFBC stove bottom; CFBC stove top is connected through the feed space of high-temperature separator with two-way material controlling device, be divided into two-way then, one tunnel high temperature tapered valve through the feed space side of two-way material controlling device is connected with the bottom of fluidized-bed gasification furnace, and another road is connected with the bottom of CFBC stove through the returning charge chamber of two-way material controlling device.
Described two-way material controlling device top is provided with feed space and returning charge chamber side by side, and the bottom of feed space and returning charge chamber is interconnected, and two-way material controlling device bottom is provided with returning charge chamber air compartment, feed space air compartment side by side, and two-way material controlling device feed space side is provided with the high temperature tapered valve.The superficial gas velocity of feed space operation is 0.5-2m/s, and the superficial gas velocity of returning charge chamber operation is 1-3m/s, and feed space, returning charge chamber material average flow velocity are 0.05-0.3m/s.
Described material returning device top is provided with pan feeding chamber and discharge chamber side by side, and the material returning device bottom is provided with discharge chamber air compartment, pan feeding chamber air compartment side by side.The superficial gas velocity of pan feeding chamber operation is 0.5-2m/s, and the superficial gas velocity of discharge chamber operation is 1-3m/s, and pan feeding chamber, discharge chamber material average flow velocity are 0.05-0.3m/s.
The present invention and the existing beneficial effect that has of comparing
1) the present invention combines closely CFBC stove and fluidized-bed gasification furnace, is implemented in cover system coal gasification burning classification and transforms, and has realized the rational and efficient use of the various compositions of coal;
2) two-way material controlling device adopts the combination of fluid bed material returning device and high temperature tapered valve, can effectively regulate entering fluidized-bed gasification furnace and CFBC stove inventory, thus the running temperature of control gasification furnace and combustion furnace.Operation is simple, and is easy to adjust;
3) material returning device and two-way material controlling device all adopt the steam fluidisation, the gas that steam can cut off between fluidized-bed gasification furnace and the CFBC stove is ganged up, guarantee reliability of system operation, the aperture of the size of steam regulation amount and high temperature tapered valve can be controlled the recycle stock amount between two stoves, satisfies the requirement of system's operation;
4) this system can be widely used in burn, gasify, in metallurgy, catalysis and the regeneration technology.
Description of drawings
Accompanying drawing is the circulating system for double fluidized bed combustion gasification materiel structural representation;
Among the figure: air 1, CFBC stove 2, high-temperature separator 3, high-temperature flue gas 4, two-way material controlling device 5, feed space 6, returning charge chamber 7, returning charge chamber air compartment 8, feed space air compartment 9, high temperature tapered valve 10, steam 11, discharge chamber 12, discharge chamber air compartment 13, steam 14, pan feeding chamber air compartment 15, material returning device 16, pan feeding chamber 17, fluidized gas 18, gasification furnace 19, coal supply 20, coal gas 21.
The specific embodiment
As shown in drawings, circulating system for double fluidized bed combustion gasification materiel comprises fluidized-bed gasification furnace 19 and CFBC stove 2; Fluidized-bed gasification furnace middle part is connected with the material returning device pan feeding chamber 17 of material returning device 16, and after material returning device discharge chamber 12 be connected with CFBC stove bottom 2; CFBC stove 2 tops are connected with the feed space 6 of two-way material controlling device 5 through high-temperature separator 3, be divided into two-way then, one tunnel high temperature tapered valve 10 through the feed space side of two-way material controlling device is connected with the bottom of fluidized-bed gasification furnace 19, and another road is connected with the bottom of CFBC stove 2 through the returning charge chamber 7 of two-way material controlling device.Thereby form the double-fluidized-bed high-temperature material circulatory system.
Described two-way material controlling device 5 tops are provided with feed space 6 and returning charge chamber 7 side by side, the bottom of feed space 6 and returning charge chamber 7 is interconnected, two-way material controlling device 5 bottoms are provided with returning charge chamber air compartment 8, feed space air compartment 9 side by side, and two-way material controlling device feed space 6 sides are provided with high temperature tapered valve 10.The superficial gas velocity of feed space operation is 0.5-2m/s, and the superficial gas velocity of returning charge chamber operation is 1-3m/s, and feed space, returning charge chamber material average flow velocity are 0.05-0.3m/s.
Described material returning device 16 tops are provided with pan feeding chamber 17 and discharge chamber 12 side by side, and the material returning device bottom is provided with discharge chamber air compartment 13, pan feeding chamber air compartment 15 side by side.The superficial gas velocity of pan feeding chamber operation is 0.5-2m/s, and the superficial gas velocity of discharge chamber operation is 1-3m/s, and pan feeding chamber, discharge chamber material average flow velocity are 0.05-0.3m/s.
System flow is: fluidized-bed gasification furnace fluidized gas air blast, running temperature is 600～1000 ℃, coal supply feeds fluidized-bed gasification furnace through batcher, produces coal gas and discharges from top, and gasification back semicoke and recycle stock are sent into the CFBC stove through material returning device and burnt.The CFBC stove adopts air blast, running temperature is 800～950 ℃, use the semicoke of fluidized-bed gasification furnace, produce the recycle stock that the heat heating comes through material returning device from fluidized-bed gasification furnace, recycle stock enters two-way material controlling device after being separated by the high-temperature separator of CFBC outlet of still, part is delivered to fluidized-bed gasification furnace through the high temperature tapered valve gasification heat absorption is provided, and part is returned the CFBC stove through the returning charge chamber of two-way material controlling device.
Two-way material controlling device is the double-chamber structure that is interconnected, comprise 1 feed space and 1 returning charge chamber, feed space side arrangement one high temperature tapered valve, two-way material controlling device adopts steam blast, can realize the high-temperature material that high-temperature separator separates is delivered to fluidized-bed gasification furnace and CFBC stove respectively, stop gas to seal in high-temperature separator simultaneously from fluidized-bed gasification furnace and CFBC stove, and can be by the aperture of steam regulation amount and high temperature tapered valve, adjusting enters two stove recycle stock amount ratios, with the temperature of control fluidized-bed gasification furnace.
Material returning device is the double-chamber structure that is interconnected, comprise pan feeding chamber and discharge chamber, adopt steam blast, can realize the semicoke and the high-temperature material of fluidized-bed gasification furnace are delivered to the CFBC stove, stop gas to seal in fluidized-bed gasification furnace simultaneously, and can the steam regulation amount control the recycle stock amount from the CFBC stove.
Material returning device of the present invention and two-way material controlling device all adopt the steam fluidisation, and the aperture of the size of steam regulation amount and high temperature tapered valve is controlled the recycle stock amount, and effectively the gas between partition bed gasification furnace and the CFBC stove is ganged up.
Claims (5)
1. a circulating system for double fluidized bed combustion gasification materiel is characterized in that comprising fluidized-bed gasification furnace (19) and CFBC stove (2); Fluidized-bed gasification furnace middle part is connected with the pan feeding chamber (17) of material returning device (16), and after material returning device discharge chamber (12) be connected with CFBC stove (2) bottom; CFBC stove (2) top is connected with the feed space (6) of two-way material controlling device (5) through high-temperature separator (3), be divided into two-way then, one tunnel the high temperature tapered valve (10) of feed space side through being located at two-way material controlling device is connected with the bottom of fluidized-bed gasification furnace (19), and another road is connected with the bottom of CFBC stove (2) through the returning charge chamber (7) of two-way material controlling device.
2. a kind of circulating system for double fluidized bed combustion gasification materiel according to claim 1, it is characterized in that, described two-way material controlling device (5) top is provided with feed space (6) and returning charge chamber (7) side by side, the bottom of feed space (6) and returning charge chamber (7) is interconnected, two-way material controlling device (5) bottom is provided with returning charge chamber air compartment (8), feed space air compartment (9) side by side, and two-way material controlling device feed space (6) side is provided with high temperature tapered valve (10).
3. a kind of circulating system for double fluidized bed combustion gasification materiel according to claim 1, it is characterized in that, described material returning device (16) top is provided with pan feeding chamber (17) and discharge chamber (12) side by side, and the material returning device bottom is provided with discharge chamber air compartment (13), pan feeding chamber air compartment (15) side by side.
4. two-way material controlling device according to claim 2 (5) is characterized in that, the superficial gas velocity of described feed space operation is 0.5-2m/s, and the superficial gas velocity of returning charge chamber operation is 1-3m/s, and feed space, returning charge chamber material average flow velocity are 0.05-0.3m/s.
5. material returning device according to claim 3 (16) is characterized in that, the superficial gas velocity of described pan feeding chamber operation is 0.5-2m/s, and the superficial gas velocity of discharge chamber operation is 1-3m/s, and pan feeding chamber, discharge chamber material average flow velocity are 0.05-0.3m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100595971A CN101255987B (en) | 2008-02-04 | 2008-02-04 | Circulating system of combustion gasification materiel for double fluidized bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100595971A CN101255987B (en) | 2008-02-04 | 2008-02-04 | Circulating system of combustion gasification materiel for double fluidized bed |
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| Publication Number | Publication Date |
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| CN101255987A CN101255987A (en) | 2008-09-03 |
| CN101255987B true CN101255987B (en) | 2011-07-20 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532663B (en) * | 2009-03-02 | 2013-08-14 | 章礼道 | Oil-free ignition system of circulating fluidized bed boiler using red slag generator |
| CN102258964B (en) * | 2010-05-26 | 2014-01-01 | 中国科学院工程热物理研究所 | Dual circulating fluidized bed device and control method for coupling recycled material thereof |
| CN102072484B (en) * | 2010-11-25 | 2012-06-27 | 中国科学院山西煤炭化学研究所 | Discharged material return circulation control device for fluidized coal gasifier and application thereof |
| CN102829473B (en) * | 2012-09-25 | 2016-02-03 | 中国东方电气集团有限公司 | A kind of pyrolysis and combustion double bed solves the system that high sodium coal combustion stains |
| CN102944008B (en) * | 2012-11-21 | 2015-10-28 | 中国东方电气集团有限公司 | The system that a kind of double fluidized bed combustion stove prevents boiler heating surface from staiing |
| CN102937290B (en) * | 2012-11-21 | 2015-08-26 | 中国东方电气集团有限公司 | The double-fluidized-bed system preventing boiler from staiing of a kind of external bed |
| CN102966943B (en) * | 2012-11-21 | 2015-05-20 | 华中科技大学 | Chemical looping combustion device with variable circulating fluidized beds |
| AU2013377372B2 (en) * | 2013-02-05 | 2018-01-04 | Reliance Industries Limited | A process for catalytic gasification of carbonaceous feedstock |
| CN103557520A (en) * | 2013-11-21 | 2014-02-05 | 江苏中容环保有限公司 | Double-circulating fluidized bed device controlled by mechanical-nonmechanical coupling |
| CN103756731B (en) * | 2014-01-03 | 2015-11-11 | 东南大学 | A kind of reciprocating cycle double fluidized bed solid fuel gasification device and method |
| CN103776023B (en) * | 2014-01-13 | 2016-01-06 | 东南大学 | A kind of double-fluidized-bed gas-solid burner and method |
| CN103742899B (en) * | 2014-01-23 | 2016-05-04 | 上海锅炉厂有限公司 | A kind of circulating fluid bed burning in oxygen enrichment polygenerations systeme and technique |
| CN105062569B (en) * | 2015-08-20 | 2017-11-24 | 北京雷浩环保能源技术有限公司 | The control method and system of double-fluidized-bed coal gasifying process load |
| CN115585455B (en) * | 2022-12-12 | 2023-04-11 | 浙江百能科技有限公司 | Furnace body system based on bidirectional material returning device and control method thereof |
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