CN106336907A - Device and process for cyclone pyrolysis high-throughput circulation gasification - Google Patents
Device and process for cyclone pyrolysis high-throughput circulation gasification Download PDFInfo
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- CN106336907A CN106336907A CN201610877928.7A CN201610877928A CN106336907A CN 106336907 A CN106336907 A CN 106336907A CN 201610877928 A CN201610877928 A CN 201610877928A CN 106336907 A CN106336907 A CN 106336907A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
- C10J3/64—Processes with decomposition of the distillation products
- C10J3/66—Processes with decomposition of the distillation products by introducing them into the gasification zone
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Industrial Gases (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a device and process for cyclone pyrolysis high-throughput circulation gasification. The device comprises an ascending pipe semicoke oxidation combustion reactor, a cyclone pyrolysis reactor and a bubbling bed gasification reactor. The process comprises the steps of causing low-rank coal or coal/biomass mixed particles to enter the cyclone pyrolysis reactor through a raw material inlet and be rotatably mixed with high-temperature circulation semicoke particles and flue gas which enter through a high-temperature carrier inlet, heating the raw material particles quickly to perform fast pyrolysis, quickly separating gas and solid state products, causing gaseous tar, pyrolysis gas and high-temperature flue gas to flow out of an exhaust pipe on the upper portion of the cyclone pyrolysis reactor, and causing the solid-state semicoke particles and heat carrier particles to enter the bubbling bed gasification reactor through feed legs from a dust outlet on the lower portion of the cyclone pyrolysis reactor and undergo partial gasification reaction with a gasifying agent to prepare synthesis gas. The number of unit devices in a circulation system is reduced, and the operability of the whole system is improved; the device investment is reduced, and the production capability of the device is improved.
Description
Technical field
The invention discloses a kind of whirlwind pyrolysis high flux circulating gasification device and technique are and in particular to one kind possesses self-heating
The high flux semicoke recirculating fluidized bed low-order coal of carrying capacity and catalysis activity or coal/living beings hybrid particles whirlwind pyrolytic gasification
Technique.
Background technology
Coal future considerably long in the period of in still can occupy sizable proportion in the energy resource structure of China.Coal at present
The Land use systems of charcoal are mainly burning.The composition of coal is extremely complex, and the volatile matter wherein containing can produce the change of high added value
Chemical product, only not only wastes as fuel and also can cause very big environmental pollution.For low-order coal/living beings this
Problem is especially prominent.Therefore, the technique of clean utilization coal is capable of in exploitation, and the process system of particularly low-order coal is significant.
At present by the pyrolysis of coal, gasification, burning and other PROCESS COUPLING achieved with certain successful experience, but existing
Coupling technique has that long flow path, equipment is many, high energy consumption and the shortcomings of complex operation.Chinese invention patent cn102504842a
Propose a kind of coal pyrolytic gasified burning Multi-class propagation method.Pyrolysis of coal, gasification, three kinds of reactions of burning are respectively placed in three streams
Change in bed, the high temperature ash that burning produces delivers heat to pyrolysis oven as solid thermal carriers, and high-temperature flue gas are used for producing gasification
Water vapour required for stove.It is similar to therewith, it is ciculation fluidized that Chinese invention patent cn201410077858.8 proposes a kind of inclusion
The coal pyrolytic gasified multi-joint-production apparatus of bed boiler, moving bed pyrolysis reactor and moving bed gasification stove, realize coal grading optimization
Using the high temperature ash that this technique produces also with burning is as heat carrier.There is following defect in above-mentioned two patent: first,
High-temp circulating ash granularity is little, there is dust-tar, and dust-synthesis gas is difficult to detached problem, is also easy to cause pipeline blockage；
Second, contain a certain amount of alkali metal in pit ash, at high temperature, alkali metal can corrode steel, using high temperature ash as solid thermal
Carrier can make substantial amounts of alkali metal gather in the entire system, easily causes potential safety hazard；3rd, heat carrier is in cyclic process
Will be through three reactors and matched separation equipment and pipeline, the circulation rate of circulation semicoke particle and internal circulating load are all
Can be limited by system complexity, and then be restricted the production capacity of whole system.The presence of these problems can hinder technology to set
The realization thought；4th, the pyrolysis section of above-mentioned two technique all fails to meet the ideal conditions of pyrolytic reaction, the such as time of staying
Short, it is evenly distributed.Tokyo Univ Japan (chemical engineering science, 66 (18) (2011) 4212-
4220；chemical engineering journal, 164 (2010) 221-229；advanced powder
Technology, 25 (1) (2014) 379-388) " novel high-density three-tower type recycle stream is proposed based on self-heating renewal theory
Change bed gasifying process ", realize the thermal decomposition gasification combustion classified utilization of coal, quartz sand exists as solid circulation heat carrier particle
System internal circulation flow, sequentially passes through burner cyclone separator pyrolysis apparatus quick disconnector gasification furnace sealing gland bed
And connect the pipeline of each equipment.Chinese invention patent cn104789245a is similar to and proposes a kind of work of the catalysis based on semicoke
Property and three-tower type high flux semicoke recirculating fluidized bed coal (living beings) the pyrolytic gasification technique of self-heating carrying capacity, using half Jiaozhuo
For solid circulation semicoke particle, make full use of catalysis activity and the self-heating carrying capacity that semicoke is had by oneself, realize tar, coal gas and conjunction
The coproduction grown up to be a useful person.Two above technical process is all complex, causes the circulation flux of particle much to be restricted, simultaneously multiple
Coordination between equipment is relatively difficult, and operation easier is larger.
South China Science ＆ Engineering University (chemical industry and engineering, 10 (3) (1992) 58-62) summarizes recent year external cyclone
The progress of reactor, most of cyclone reactor only one of which entrance at present, is mainly passed through wall and is passed with gas, particle heat
The mode heat supply led, this kind of cyclone reactor easily the insufficient situation of heat transfer in the case of high flux charging, simultaneously
May not apply to the situation that two strands of particles feed simultaneously.Chinese invention patent cn103534021a discloses a kind of special construction
Cyclone reactor, this cyclone reactor goal response temperature is higher, targetedly have devised the structure comprising two reaction zones,
Device structure is complicated；Mainly conducted heat by way of radiant heat transfer simultaneously, be not suitable for the reaction of lower temperature.
Content of the invention
The present invention is intended to provide a kind of whirlwind pyrolysis high flux circulating gasification device and technique, and reduce single in the circulatory system
The quantity of element device, its advantage has: one complexity being reduction of system at 2 points, improves the operability of whole system；Two
Being reduction of the whole height of device, reducing equipment investment it is often more important that providing for improving semicoke particle circulation flux
The space of improvement system, contributes to increasing the production capacity of device.
A kind of whirlwind pyrolysis high flux circulating gasification device that the present invention provides, including the reaction of tedge semicoke oxidizing fire
Device, whirlwind pyrolysis reactor and bubbling bed gasification reactor；
Tedge semicoke oxidizing fire reactor body is cylindrical structure, and top is provided with outlet, with whirlwind pyrolysis reactor
Higher temperature carrier entrance connects, and reactor lower part connects bubbling bed gasification reactor, and reactor bottom is provided with oxygen (air) entrance；
The top of whirlwind pyrolysis reactor is column type cylinder, and bottom is pyramid type cylinder, and cylindrical upper portion side is provided with raw material and enters
Mouthful, opposite side is provided with high-temperature heat carrier entrance, and two entrances are all tangent with cylindrical tube, arranges in 180 degree, cylindrical tube top
It is provided with blast pipe, blast pipe is coaxial with cylindrical tube, and inserts inside it, the cone mouth of pyramid type cylinder connects dipleg, dipleg
In bottom insertion bubbling bed gasification reactor；The blast pipe at whirlwind pyrolysis reactor top be sequentially connected the first cyclone separator,
First sack cleaner, the first cooler；
Bubbling bed gasification reactor bottom is provided with gasification agent inlet, and top is provided with syngas outlet, and bubbling bed gasification reactor is left
Side overflow pipe connects tedge semicoke oxidizing fire reactor；The syngas outlet on bubbling bed gasification reactor top is sequentially connected
Second cyclone separator, the second sack cleaner, the second cooler.
Described high-temperature heat carrier refers to semicoke particle.
Described gasifying agent is vapor and a small amount of oxygen.
The invention provides a kind of whirlwind is pyrolyzed high flux technique for circular gasifying, using said apparatus, including herein below:
(1) whirlwind pyrolysis: in whirlwind pyrolysis reactor, low-order coal or coal/living beings hybrid particles are entered by feed(raw material)inlet
In whirlwind pyrolysis reactor, with the high temperature circulation semicoke particle entering from higher temperature carrier entrance, flue gas rotation mix, low-order coal or
Coal/living beings hybrid particles are heated rapidly, and occur quick catalysis pyrolytic reaction to realize quick gas, solid separation simultaneously；
Gaseous tar, pyrolysis blast pipe from whirlwind pyrolysis reactor top of coal gas and high-temperature flue gas flow out, and sequentially pass through the
One cyclone separator, the first sack cleaner, the first cooler, the fugitive constituent of precipitation and high-temperature flue gas are carried out at dedusting and cooling
Reason, condensation portion is tar liquid, uncooled part include in the pyrolysis coal gas of high heating value and flue gas, separated, dedusting with
Heat exchange is processed, and pyrolysis coal gas can be used as industrial chemicals；
The fresh semicoke particle generating in whirlwind pyrolysis reactor and high temperature circulation semicoke particle are from whirlwind pyrolysis reactor bottom
Dust-exhausting port through dipleg enter bubbling bed gasification reactor；
(2) gasify: in bubbling bed gasification reactor, from fresh semicoke particle and the high temperature circulation half of whirlwind pyrolysis reactor
The further heat exchange of burnt particle, and part gasification reaction producing synthesis gas occur with gasifying agent, synthesis gas pass through separator separately after,
Removing dust is processed with cooling and is used as industrial chemicals；
Not vaporized semicoke particle enters tedge semicoke oxidizing fire reactor by overflow pipe；
(3) in tedge semicoke oxidizing fire reactor, semicoke particle is in ascending air (oxygen or air) effect lower edge
Riser flows up concurrent first portion oxidizing fire, thus obtaining a large amount of high temperature circulation semicoke particles.
In above-mentioned technique, there is combustion reaction in tedge semicoke oxidizing fire reactor, produced heat is main
It is supplied to pyrolysis and gasification by circulating semicoke particle,
In above-mentioned technique, the running temperature of whirlwind pyrolysis reactor is 850-900 DEG C, and operating pressure is 0.1-2 mpa.
In above-mentioned technique, the running temperature of bubbling bed gasification reactor is 800-850 DEG C, and operating pressure is 0.1-5 mpa.
In above-mentioned technique, the running temperature of tedge semicoke oxidizing fire reactor is 950-1100 DEG C, and operating pressure is
0.1-3 mpa.
Beneficial effects of the present invention:
(1) one equipment of whirlwind pyrolysis reactor is utilized to replace original fluidized bed pyrolysis stove and matched multiple separation
Device, reduces the manufacturing cost of system equipment.
(2) described system is made up of less unit, and complexity is lower, is easy to maintain the smooth of solid thermal carriers
Circulation, reduces operation easier, reduces running cost.
(3) minimizing of unit quantity reduces the overall height of apparatus system, and the circulation for improving semicoke particle is led to
Amount provides the space of improvement system.For example: the position of bubbling fluidized bed reactor can be raised, increase bubbling fluidized bed anti-
Answer the difference in height between device particle overfall and tedge particle entrance, so can greatly improve particle circulation motive force, from
And increase the production capacity of system.
(4) in existing technology, coal-char combustion produce heat some flow out combustion under the carrying of high-temperature flue gas
Burning-pyrolysis-gasification system, only high temperature circulation semicoke particle are pyrolytic reaction heat supply；After improvement, the heat of high-temperature flue gas part
Also it is applied to pyrolytic reaction, energy distributes and using more reasonable.
(5), in prior art, the tar that pyrolysis produces enters follow-up processing stream under the carrying of the gases such as pyrolysis coal gas
Journey, the flow of these conveying gases is less, and temperature is relatively low, and the high boiling component in tar easily condenses in the duct, both wastes
Easily blocking pipeline causes potential safety hazard again；After improvement, coal-char combustion produce big flow high-temperature flue gas carry tar it is suppressed that
Tar condensation in the duct, improves income it is ensured that safety.
Brief description
Fig. 1 is pyrolyzed the schematic diagram of high flux circulating gasification device and technique for whirlwind of the present invention.
Fig. 2 is the structural representation of whirlwind pyrolysis reactor of the present invention.
Fig. 3 is the top view of Fig. 2.
In figure: 1 is feed(raw material)inlet, 2 is whirlwind pyrolysis reactor, and 3 is the first cyclone separator, and 4 is the first bag-type dust
Device, 5 is the first cooler, and 6 is dipleg, and 7 is bubbling bed gasification reactor, and 8 is gasification agent inlet, and 9 is the second cyclone separator,
10 is the second sack cleaner, and 11 is the second cooler, and 12 is oxygen (air) entrance, and 13 is that tedge semicoke oxidizing fire is anti-
Answer device, 14 is tedge outlet, and 15 is higher temperature carrier entrance, and 16 is blast pipe, and 17 is syngas outlet.
Specific embodiment
To further illustrate the present invention below by embodiment, but to be not limited to following examples.
Embodiment:
As shown in Figure 1 and 2, a kind of whirlwind pyrolysis high flux circulating gasification device and technique, anti-including tedge semicoke oxidizing fire
Answer device 13, whirlwind pyrolysis reactor 2 and bubbling bed gasification reactor 7；
Tedge semicoke oxidizing fire reactor 13 main body is cylindrical structure, and top is provided with outlet 14, with whirlwind pyrolytic reaction
The higher temperature carrier entrance 15 of device 2 connects, and reactor lower part connects bubbling bed gasification reactor 7, and it is (empty that reactor bottom is provided with oxygen
Gas) entrance 12；
The top of whirlwind pyrolysis reactor 2 is column type cylinder, and bottom is pyramid type cylinder, and cylindrical upper portion side is provided with raw material and enters
Mouth 1, opposite side is provided with high-temperature heat carrier entrance 16, and two entrances are all tangent with cylindrical tube, arranges in 180 degree；Cylindrical tube
Top is provided with blast pipe 17, and blast pipe is coaxial with cylindrical tube, and inserts inside it；The cone mouth of pyramid type cylinder connects dipleg
6, in dipleg bottom insertion bubbling bed gasification reactor 7；The blast pipe 17 at whirlwind pyrolysis reactor 2 top is sequentially connected the first rotation
Wind separator 3, the first sack cleaner 4, the first cooler 5；
Bubbling bed gasification reactor 7 bottom is provided with gasification agent inlet 8, and top is provided with syngas outlet 17, bubbling bed gasification reaction
Device 7 left side overflow pipe connects tedge semicoke oxidizing fire reactor 13；The syngas outlet on bubbling bed gasification reactor 7 top
17 are sequentially connected the second cyclone separator 9, the second sack cleaner 10, the second cooler 11.
As shown in Fig. 2 selecting a diameter of reference dimension of whirlwind pyrolysis reactor column structure, remaining part dimension scale
Relation is as follows: dx/ d=0.4～0.6, dd/ d=0.3～0.5, a/d=0.25～0.75, b/d=0.085～0.37, s/d=0.4～
1.5, h/d=3～7, hc/ d=1.5～4.Reference dimension d adjusts according to actual treatment amount.
The principle of the present invention: whirlwind pyrolysis reactor both as pyrolysis reactor, played separating high-temp gas and solid again
The function of particle.Whirlwind pyrolysis reactor arranges two entrances, and the high temperature producing in tedge semicoke oxidizing fire reactor follows
Ring semicoke particle and high-temperature flue gas enter from higher temperature carrier entrance, and inertia conveying gas carries low-order coal or coal/living beings mixing
Particle enters from feed(raw material)inlet, and low-order coal or coal/living beings hybrid particles are mixed with high temperature circulation semicoke particle, high-temperature flue gas rotation
After conjunction, heat exchange, there is fast pyrogenation reaction.The tar discharging and pyrolysis coal gas are in gaseous state, the high-temperature flue gas producing with burning
The common blast pipe from whirlwind pyrolysis reactor top is discharged, and obtains tar and middle high heating value through the operation of the units such as follow-up separation
Pyrolysis coal gas.Pyrogenous origin fresh high-temperature semi-coke enters pan feeding with circulation semicoke particle by the dust-exhausting port of whirlwind pyrolysis reactor
Leg, be delivered to lower section bubbling fluidization bed gasification furnace, with the gasifying agents such as water vapour occur part gasification reaction, producing synthesis gas,
It is used as industrial chemicals after removing dust is processed with cooling successively after synthesis gas discharge.Not vaporized semicoke particle enters through overflow pipe
Tedge semicoke oxidizing fire reactor, flows up and generating unit in ascending air (oxygen or air) effect lower edge tedge
Divide oxidizing fire, thus obtaining a large amount of high temperature circulation semicoke particles.Thus, by the less device of this set of unit simultaneously
Obtained the products such as high-quality tar, coal gas and synthesis gas, using the fast pyrogenation of whirlwind pyrolysis reactor and efficient air, solid point
Complete pyrolysis and gas solid separation from performance one step, the high flux realizing semicoke heat carrier circulates and reduces the operation hardly possible of whole system
Degree.
The process engineering of the present invention specifically includes herein below:
(1) whirlwind pyrolysis: in whirlwind pyrolysis reactor 2, low-order coal or coal/living beings hybrid particles are entered by feed(raw material)inlet 1
Enter in whirlwind pyrolysis reactor 2, mix with the high temperature circulation semicoke particle entering from higher temperature carrier entrance 15, high-temperature flue gas, low
Rank coal or coal/living beings hybrid particles are heated rapidly, and occur quick catalysis pyrolytic reaction to realize quick gas simultaneously, admittedly divide
From；
Gaseous tar, the pyrolysis coal gas and high-temperature flue gas blast pipe 16 from whirlwind pyrolysis reactor 2 top flow out, and sequentially pass through
First cyclone separator 3, the first sack cleaner 4, the first cooler 5, the fugitive constituent of precipitation and high-temperature flue gas carry out dedusting with
Cooling is processed, and condensation portion is tar liquid, uncooled part include in the pyrolysis coal gas of high heating value and flue gas, separated,
Dedusting is processed with heat exchange, and pyrolysis coal gas can be used as industrial chemicals；
The fresh semicoke particle that pyrolytic reaction generates and the dust-exhausting port from whirlwind pyrolysis reactor 2 bottom for the high temperature circulation semicoke particle
Enter bubbling bed gasification reactor 7 through dipleg 6；
Described heat carrier refers to semicoke particle.
(2) gasify: in bubbling bed gasification reactor 7, from fresh semicoke particle and the high temperature of whirlwind pyrolysis reactor 2
The circulation further heat exchange of semicoke particle, and there are part gasification reaction producing synthesis gas with gasifying agent, synthesis gas passes through separator
After separating, removing dust is processed with cooling and is used as industrial chemicals；
Not vaporized semicoke particle enters tedge semicoke oxidizing fire reactor 13 by overflow pipe；
Described gasifying agent is vapor and a small amount of oxygen.
(3) in tedge semicoke oxidizing fire reactor 13, semicoke particle acts in ascending air (oxygen or air)
Lower edge tedge flows up concurrent first portion oxidizing fire, thus obtaining a large amount of high temperature circulation semicoke particles.
Low-order coal or coal/living beings hybrid particles deliver into whirlwind pyrolysis reactor by nitrogen, and tedge semicoke aoxidizes
Enough heats required for the high temperature circulation semicoke particle of combustion reactor generation and high-temperature flue gas offer pyrolysis of coal, whirlwind is pyrolyzed
The running temperature of reactor is 850-900 DEG C, and operating pressure is 0.1-2 mpa.Bubbling bed gasification reactor adopt vapor and
As fluidized gas and gasifying agent, semicoke particle here carries out partial gasification to a small amount of oxygen, 800-850 DEG C of gasifier temperature in bed,
Operating pressure is 0.1-5 mpa.Be passed through oxygen (air) in tedge semicoke oxidizing fire reactor, effect has two, one be by
The particle that bottom enters is transported to top and flows out, and two is thus obtaining high temperature circulation semicoke for oxidizing fire part semicoke
Grain, running temperature is 950-1100 DEG C, and operating pressure is 0.1-3 mpa.
A kind of whirlwind pyrolysis high flux circulating gasification device proposed by the present invention and technique, have coupled in raw material classified utilization
Burning-fast pyrogenation with separate-gasification, and the catalysis activity had by oneself using semicoke particle and self-heating carrying capacity, real
Show the coproduction of high-quality tar, coal gas and synthesis gas；Fast pyrogenation and efficient air, solid separation using whirlwind pyrolysis reactor
Performance one step completes pyrolysis and gas solid separation, and the high flux realizing semicoke heat carrier circulates and reduces the operation hardly possible of whole system
Degree.
Claims (8)
1. a kind of whirlwind pyrolysis high flux circulating gasification device it is characterised in that: include tedge semicoke oxidizing fire reactor,
Whirlwind pyrolysis reactor and bubbling bed gasification reactor；
Tedge semicoke oxidizing fire reactor body is cylindrical structure, and top is provided with outlet, with whirlwind pyrolysis reactor
Higher temperature carrier entrance connects, and reactor lower part connects bubbling bed gasification reactor, and reactor bottom is provided with oxygen or air intake；
The top of whirlwind pyrolysis reactor is column type cylinder, and bottom is pyramid type cylinder, and cylindrical upper portion side is provided with raw material and enters
Mouthful, opposite side is provided with high-temperature heat carrier entrance, and two entrances are all tangent with cylindrical tube, arranges in 180 degree, cylindrical tube top
It is provided with blast pipe, blast pipe is coaxial with cylindrical tube, and inserts inside it, the cone mouth of pyramid type cylinder connects dipleg, dipleg
In bottom insertion bubbling bed gasification reactor；The blast pipe at whirlwind pyrolysis reactor top be sequentially connected the first cyclone separator,
First sack cleaner, the first cooler；
Bubbling bed gasification reactor bottom is provided with gasification agent inlet, and top is provided with syngas outlet, and bubbling bed gasification reactor is left
Side overflow pipe connects tedge semicoke oxidizing fire reactor；The syngas outlet on bubbling bed gasification reactor top is sequentially connected
Second cyclone separator, the second sack cleaner, the second cooler.
2. whirlwind according to claim 1 pyrolysis high flux circulating gasification device it is characterised in that: described high-temperature heat carrier
Refer to semicoke particle.
3. whirlwind according to claim 1 pyrolysis high flux circulating gasification device it is characterised in that: described gasifying agent is water
Steam and a small amount of oxygen.
4. a kind of whirlwind is pyrolyzed high flux technique for circular gasifying, using the whirlwind pyrolysis high pass described in any one of claim 1 ~ 3
Amount circulating gasification device is it is characterised in that include herein below:
(1) whirlwind pyrolysis: in whirlwind pyrolysis reactor, low-order coal or coal/living beings hybrid particles are entered by feed(raw material)inlet
In whirlwind pyrolysis reactor, with the high temperature circulation semicoke particle entering from higher temperature carrier entrance, flue gas rotation mix, low-order coal or
Coal/living beings hybrid particles are heated rapidly, and occur quick catalysis pyrolytic reaction to realize quick gas, solid separation simultaneously；
Gaseous tar, pyrolysis blast pipe from whirlwind pyrolysis reactor top of coal gas and high-temperature flue gas flow out, and sequentially pass through the
One cyclone separator, the first sack cleaner, the first cooler, the fugitive constituent of precipitation and high-temperature flue gas are carried out at dedusting and cooling
Reason, condensation portion is tar liquid, uncooled part include in the pyrolysis coal gas of high heating value and flue gas, separated, dedusting with
Heat exchange is processed, and pyrolysis coal gas is used as industrial chemicals；
The fresh semicoke particle generating in whirlwind pyrolysis reactor and high temperature circulation semicoke particle are from whirlwind pyrolysis reactor bottom
Dust-exhausting port through dipleg enter bubbling bed gasification reactor；
(2) gasify: in bubbling bed gasification reactor, from fresh semicoke particle and the high temperature circulation half of whirlwind pyrolysis reactor
The further heat exchange of burnt particle, and part gasification reaction producing synthesis gas occur with gasifying agent, synthesis gas pass through separator separately after,
Removing dust is processed with cooling and is used as industrial chemicals；
Not vaporized semicoke particle enters tedge semicoke oxidizing fire reactor by overflow pipe；
(3) in tedge semicoke oxidizing fire reactor, semicoke particle flows up in ascending air effect lower edge tedge
Concurrent first portion oxidizing fire, thus obtain a large amount of high temperature circulation semicoke particles.
5. whirlwind according to claim 4 pyrolysis high flux technique for circular gasifying it is characterised in that: in tedge semicoke oxygen
Change and combustion reaction occurs in combustion reactor, produced heat is supplied to pyrolysis by high temperature circulation semicoke particle and gasified
Journey.
6. whirlwind according to claim 4 pyrolysis high flux technique for circular gasifying it is characterised in that: whirlwind pyrolysis reactor
Running temperature be 850-900 DEG C, operating pressure be 0.1-2 mpa.
7. whirlwind according to claim 4 pyrolysis high flux technique for circular gasifying it is characterised in that: bubbling bed gasification reaction
The running temperature of device is 800-850 DEG C, and operating pressure is 0.1-5 mpa.
8. whirlwind according to claim 4 pyrolysis high flux technique for circular gasifying it is characterised in that: the oxidation of tedge semicoke
The running temperature of combustion reactor is 950-1100 DEG C, and operating pressure is 0.1-3 mpa.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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