CN205893159U - Utilize solid heat carrier's pyrolytic reaction ware - Google Patents

Utilize solid heat carrier's pyrolytic reaction ware Download PDF

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Publication number
CN205893159U
CN205893159U CN201620890039.XU CN201620890039U CN205893159U CN 205893159 U CN205893159 U CN 205893159U CN 201620890039 U CN201620890039 U CN 201620890039U CN 205893159 U CN205893159 U CN 205893159U
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Prior art keywords
pyrolysis reactor
heat carrier
pyrolytic reaction
pyrolysis
inlet pipe
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CN201620890039.XU
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李昱喆
时正海
高洪培
肖平
唐巍
林伟荣
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Huaneng Clean Energy Research Institute
Huaneng Power International Inc
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Huaneng Clean Energy Research Institute
Huaneng Power International Inc
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Abstract

The utility model provides an utilize solid heat carrier's pyrolytic reaction ware, includes charge -in system, ejection of compact system, air intake system and pyrolytic reaction ware main part, wherein, pyrolytic reaction ware main part comprises pyrolytic reaction ware casing, sieve, division board, cyclone, charge -in system by the material advance tub, the heat carrier advances the pipe and constitutes, ejection of compact system comprises discharge control valve and discharging pipe, air intake system comprises not hard up device and air amount control valve, the utility model discloses a pyrolytic reaction ware be utilize solid heat carrier as the heat source for the pyrolysis material, material and heat carrier intensive mixing in the pyrolytic reaction ware, thickness of bed is controllable, has simple structure, the gaseous dustiness of pyrolysis advantage such as few.

Description

A kind of pyrolysis reactor of utilization solid thermal carriers
Technical field
This utility model is related to coal, biomass produce pyrolysis gas, tar and thermoelectricity field, utilizes solid particularly to one kind The pyrolysis reactor of heat carrier.
Background technology
The technique of coal, biomass pyrolytic is a kind of important energy conversion method by the sensible heat using solid thermal carriers, tool There is heat transfer rate fast, the thermal efficiency is high, the advantage being heated evenly.
With the development of Technology of Circulating Fluidized Bed Boiler, it is taken seriously using the technique that boiler cycling hot ash is pyrolyzed, Coal is pyrolyzed by the heat ash of CFBB as heat carrier, separates out pyrolysis gas and tar, pyrolysis char and circulating ash Return CFBB and carry out burning for generating and heat supply, realize the production of oil gas, thermoelectricity.Real process is pyrolyzed The phenomenon that fine ash is taken out of by gas from reactor is serious, leads to tar dust content high, subsequent treatment is difficult, also can block heat when serious The pipeline of solution gas output system is so that system cannot continuous and steady operation.So far, how will carry in pyrolysis coal gas Small grain size solid thermal carriers are separated and are not well solved, such as using cyclone separator, surface filter, electrostatic precipitation Device, does not all fundamentally solve the problems, such as to carry ash in oil.Additionally, after the coal-tar middle oil condensation of coal gas, easily cohering in heat exchanger tube On wall, heat transfer effect will be reduced in a short time and block, it will directly affect system operation.
There are the following problems for traditional handicraft:
1) dustiness big (depending on pyrolytic process) in pyrolysis gas, stick with tar after cooling together with, easily blocking pipe Road simultaneously increases tar processing.
2) in fluidized bed pyrolysis reactor, fluidizing gas is mixed in pyrolysis gas, reduces pyrolysis gas calorific value, increased gas Subsequent treatment amount.
The patent documentation of Publication No. cn101818071a discloses a kind of pyrolysis of coal reactor, is provided with its pyrolysis apparatus For importing the pipeline structure of high-temperature particle medium, coal imports pyrolysis reactor by mother tube, after structure preheating by the road, The outlet of pipeline structure is mixed with high-temperature medium, and which makes the volatile matters in coal easily be attached in warm precipitation Pipeline blockage is caused on equipment, and pipeline system complex in pyrolysis reactor, bring difficulty to running with service work.
The patent documentation of Publication No. cn103031135a discloses a kind of fluidized bed classification pyrolysis of coal reactor and coal heat Solution method, it carries out pyrolysis of coal using circulating ash, and pyrolysis chamber includes low temperature pyrogenation room and high temperature pyrolysis room, realizes low temperature pyrogenation coal The secondary pyrolysis of tar light oil in gas, increased gas yield, and which pyrolysis reactor adopts fluid bed, gas in reactor The pyrolysis reactor flow velocity such as velocity ratio moving bed is big, and in fluidized-bed reactor, gas dust content is high.
Content of the invention
The purpose of this utility model is to provide a kind of dustiness that can reduce in pyrolysis product, and raising equipment is continuously transported The pyrolysis reactor of utilization solid thermal carriers of row ability and continuous pyrolysis method.
For reaching above-mentioned purpose, pyrolysis reactor of the present utility model includes the anti-material dress being connected with CFBB Put, through the anti-burner hearth expecting that device returns CFBB, another part cycling hot ash is through anti-material dress for a part of cycling hot ash Put and be connected with the heat carrier inlet pipe of the pyrolysis reactor being obliquely installed, the pyrolysis reactor of heat carrier inlet pipe upper end is provided with Material inlet pipe, is located in pyrolysis reactor and is provided with sieve plate between material inlet pipe and heat carrier inlet pipe, position in pyrolysis reactor It is disposed with division board and cyclone separator in heat carrier inlet pipe lower end, the bottom of pyrolysis reactor is additionally provided with and recycle stream The discharge nozzle that the burner hearth of fluidized bed boiler is connected.
The loosening device that several are connected with source of the gas by gas coutrol valve is further opened with described pyrolysis reactor.
The thickness of feed layer of the material in described pyrolysis reactor and heat carrier mixing is higher than division board lower edge.
It is also equipped with described discharge nozzle controlling the discharging control valve of thickness of feed layer.
The lower end being located at cyclone separator in described pyrolysis reactor is also equipped with the low temperature vapour with boiler steam and water circuit Aqueous phase heat exchanger even.
The inclination angle of described pyrolysis reactor is 30~60 °.
Described sieve plate is made using heat resisting steel or castable.
Work process of the present utility model is as follows:
1) material feeds pyrolysis reactor by material inlet pipe, and partial material falls into sieve plate, and remaining drops to pyrolysis reactor Bottom;
2) solid thermal carriers be 600~1000 DEG C cycling hot ash pyrolysis reactor is fed by heat carrier inlet pipe, fell Cheng Zhongyu passes through the material contact heat transfer of sieve plate, falls into pyrolysis reactor bottom, mixed material issues in 500~900 DEG C of conditions Raw pyrolytic reaction, mixed material is filled with pyrolysis reactor bottom, and thickness of feed layer is higher than division board lower edge, thus having intercepted material The airborne dust taking up in dropping process;
3) pyrolysis reactor is obliquely installed mixed material in the presence of self gravitation and bottom loosening device, to discharging opening Move, the material after pyrolysis and heat carrier discharge pyrolysis reactor by discharge nozzle, and in pyrolysis reactor, inventory is by discharging control Valve regulation;
4) temperature that pyrolysis produces is higher than 500 DEG C of pyrolysis gas entrance cyclone separator, and the fine powder separating returns In bottoms material, detached gas discharges pyrolysis reactor.
Described heat exchanger entrance end is connected with the low temperature soda pop of boiler steam and water circuit, and heat exchanger absorption cycle is grey and is pyrolyzed The heat of gas, the high temperature soda pop of generation accesses the boiler circuit of CFBB.
The beneficial effects of the utility model:
1) this utility model realizes the mixing of material and heat carrier using sieve plate.
2) this utility model utilizes division board to intercept material fall area and gas elevated areas, decreases pyrolysis gas and takes The airborne dust content of band.
3) this utility model realizes continuous feeding and discharging using pyrolysis reactor itself inclination angle, prevents the accumulation of material and stagnant Stay.
4) this utility model carries out gas purification using the cyclone separator within pyrolysis reactor, it is to avoid tar low Temperature separates out, thus ensureing the stable operation of equipment.
Brief description
Fig. 1 is the schematic diagram of this utility model coupling cycle fluidized-bed combustion boiler.
Fig. 2 is the schematic diagram inside this utility model with heat exchanger.
Wherein: 1- heat carrier inlet pipe, 2- material inlet pipe, 3- sieve plate, 4- division board, 5- cyclone separator, 6- pyrolytic reaction Device, 7- discharging control valve, 8- discharge nozzle, 9- loosening device, 10- gas coutrol valve, 11- CFBB, 12- returning charge fills Put, 13- coal bunker, 14- heat exchanger.
Specific embodiment
Embodiment 1: referring to Fig. 1, this utility model includes the anti-material device 12 being connected with CFBB 11, one Divide cycling hot ash through the anti-burner hearth expecting device 12 return CFBB 11, another part cycling hot ash expects device 12 through anti- The heat carrier inlet pipe 1 of the pyrolysis reactor 6 being 30~60 ° with inclination angle is connected, in the pyrolysis reactor of heat carrier inlet pipe 1 upper end Be provided with the material inlet pipe 2 being connected with coal bunker 13 on 6, be located in pyrolysis reactor 6 material inlet pipe 2 and heat carrier inlet pipe 1 it Between be provided with the sieve plate 3 that heat resisting steel or castable are made, sets successively positioned at heat carrier inlet pipe 1 lower end in pyrolysis reactor 6 It is equipped with division board 4 and cyclone separator 5, the thickness of feed layer of the material in pyrolysis reactor 6 and heat carrier mixing is higher than division board 4 Lower edge, intercepts the airborne dust taking up in material and heat carrier whereabouts and enters pyrolysis gas elevated areas, thus reducing heat on source The dustiness of solution product;The bottom of pyrolysis reactor 6 be additionally provided be connected with the burner hearth of CFBB 11 with control The discharge nozzle 8 of the discharging control valve 7 of thickness of feed layer processed, is further opened with several on pyrolysis reactor 6 and passes through gas coutrol valve The loosening device 9 that 10 are connected with source of the gas.
Continuous pyrolysis method of the present utility model comprises the following steps:
1) material feeds pyrolysis reactor 6 by material inlet pipe 2, and partial material is fallen into sieve plate 3 and dropped from sieve aperture, remaining whereabouts To pyrolysis reactor 6 bottom;
2) solid thermal carriers be 600~1000 DEG C cycling hot ash pyrolysis reactor 6 is fed by heat carrier inlet pipe 1, fall During with by the material contact heat transfer of sieve plate 3, fall into pyrolysis reactor 6 bottom, mixed material is in 500~900 DEG C of conditions Issue raw pyrolytic reaction, mixed material is filled with pyrolysis reactor 6 bottom, thickness of feed layer is higher than division board 4 lower edge, thus intercepting The airborne dust taking up in material dropping process;
3) pyrolysis reactor 6 is obliquely installed mixed material in the presence of self gravitation and bottom loosening device 9, to discharging Mouth is mobile, and the material after pyrolysis and heat carrier discharge pyrolysis reactor 6 by discharge nozzle 8, and in pyrolysis reactor, inventory is by discharging Control valve 7 is adjusted;
4) temperature that pyrolysis produces is higher than that 500 DEG C of pyrolysis gas enter cyclone separator 5, it is to avoid pyrolysis gas are coal-tar middle oil Condensation blocking pipeline, the fine powder separating returns in bottoms material, and detached gas discharges pyrolysis reactor.
Discharging control valve of the present utility model adopts mechanical valve or pneumatic operated valve, for adjusting mixed material in pyrolysis reactor Thickness of feed layer.Meanwhile, material prevents solid accumulation by the loosening device of pyrolysis reactor bottom.
Embodiment 2, referring to Fig. 2, the lower end that the present embodiment is located at cyclone separator 5 in pyrolysis reactor 6 is also equipped with Heat exchanger 14, heat exchanger 14 arrival end is connected with the low temperature soda pop of boiler steam and water circuit, and heat exchanger 14 absorption cycle is grey and is pyrolyzed The heat of gas, the high temperature soda pop of generation accesses the boiler circuit of CFBB 11, and other are with embodiment 1.

Claims (7)

1. a kind of pyrolysis reactor of utilization solid thermal carriers it is characterised in that: include being connected with CFBB (11) Anti- material device (12), a part of cycling hot ash is through the anti-burner hearth expecting that device (12) returns CFBB (11), another Through anti-, part cycling hot ash expects that device (12) is connected with the heat carrier inlet pipe (1) of the pyrolysis reactor (6) being obliquely installed, carry in heat It is provided with material inlet pipe (2) on the pyrolysis reactor (6) of body inlet pipe (1) upper end, be located at material inlet pipe in pyrolysis reactor (6) (2) it is provided with sieve plate (3) and heat carrier inlet pipe (1) between, in pyrolysis reactor (6), be located at heat carrier inlet pipe (1) lower end successively It is provided with division board (4) and cyclone separator (5), the bottom of pyrolysis reactor (6) is additionally provided with and CFBB (11) discharge nozzle (8) that burner hearth is connected.
2. utilization solid thermal carriers according to claim 1 pyrolysis reactor it is characterised in that: described pyrolytic reaction The loosening device (9) that several are connected with source of the gas by gas coutrol valve (10) is further opened with device (6).
3. utilization solid thermal carriers according to claim 1 pyrolysis reactor it is characterised in that: described pyrolytic reaction The thickness of feed layer of the material in device (6) and heat carrier mixing is higher than division board (4) lower edge.
4. utilization solid thermal carriers according to claim 1 pyrolysis reactor it is characterised in that: described discharge nozzle (8) it is also equipped with controlling the discharging control valve (7) of thickness of feed layer.
5. utilization solid thermal carriers according to claim 1 pyrolysis reactor it is characterised in that: described pyrolytic reaction In device (6), the lower end positioned at cyclone separator (5) is also equipped with the heat exchanger being connected with the low temperature soda pop of boiler steam and water circuit (14).
6. utilization solid thermal carriers according to claim 1 pyrolysis reactor it is characterised in that: described pyrolytic reaction The inclination angle of device (6) is 30~60 °.
7. utilization solid thermal carriers according to claim 1 pyrolysis reactor it is characterised in that: described sieve plate (3) Made using heat resisting steel or castable.
CN201620890039.XU 2016-08-16 2016-08-16 Utilize solid heat carrier's pyrolytic reaction ware Active CN205893159U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106281372A (en) * 2016-08-16 2017-01-04 华能国际电力股份有限公司 A kind of pyrolysis reactor utilizing solid thermal carriers and continuous pyrolysis method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106281372A (en) * 2016-08-16 2017-01-04 华能国际电力股份有限公司 A kind of pyrolysis reactor utilizing solid thermal carriers and continuous pyrolysis method
CN106281372B (en) * 2016-08-16 2022-01-14 华能国际电力股份有限公司 Pyrolysis reactor utilizing solid heat carrier and continuous pyrolysis method

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