CN105861007A - Coal pyrolysis reactor-circulating fluidized bed combination system and method for treating coal by utilizing same - Google Patents
Coal pyrolysis reactor-circulating fluidized bed combination system and method for treating coal by utilizing same Download PDFInfo
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- CN105861007A CN105861007A CN201610204274.1A CN201610204274A CN105861007A CN 105861007 A CN105861007 A CN 105861007A CN 201610204274 A CN201610204274 A CN 201610204274A CN 105861007 A CN105861007 A CN 105861007A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/002—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal in combination with oil conversion- or refining processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/22—Fuel feeders specially adapted for fluidised bed combustion apparatus
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention provides a coal pyrolysis reactor-circulating fluidized bed combination system and a method for treating coal by utilizing the combination system. The combination system comprises a coal pyrolysis reactor and a circulating fluidized bed. The combination system provided by the invention has the advantages that the coal pyrolysis reactor can be combined with an existing circulating fluidized bed, the existing circulating fluidized bed does not need to be modified, the coal pyrolysis reactor and the circulating fluidized bed can relatively independently operate, mutual interference between the coal pyrolysis reactor and the circulating fluidized bed is relatively small, and the combination system can be effectively used for preparing combustible gas and pyrolytic tar and cogenerating electricity; meanwhile, a conveying system of the existing circulating fluidized bed is utilized for realizing semicoke hot delivery, combustion of semicoke is guaranteed, and coal topping process cost is reduced.
Description
Technical field
The present invention relates to coal sublevel cascade utilization technical field, in particular it relates to pyrolysis of coal reactor-recirculating fluidized bed combination
System and the method utilizing its process coal.
Background technology
The semicoke produced after pyrolysis of coal can be as fuel-fired power generation, and existing pyrolysis of coal plug technique is mainly for circulation
Fluid bed generating set, as Chinese Academy of Sciences's process and Zhejiang University utilize the heat that CFBB produces grey as heat carrier,
And utilize down-flow fluidized bed using ECT technique to achieve pyrolysis of coal, and petroleum vapor recovery.Existing system due to take more complicated solid or
The pyrolysis of coal plug technique of gas heat carrier, and pyrolytic process of coal generation petroleum resources, for electricity generation system, need
Being equipped with corresponding oil vapor treatment system, therefore existing system configuration is various, and cost is high.
Fig. 1 is a kind of furnace front coal head-drawing process structure schematic diagram, and (diagram A entrance) is sent into solid thermal carriers gas by this technique
In gasifying device 1, by coal plug pyrolysis gas and tar after cyclone separator 6, extract petroleum resources (diagram B
Outlet), the semicoke separated sends into recirculating fluidized bed 7 (diagram F outlet), and semicoke is through material returning device 2 rear portion (figure
Show that G exports) send into recirculating fluidized bed 7 bottom uses as fuel, a part send into thermal insulation coal plug combustor 3 in,
Join air burning.The flue gas that combustor 3 produces enters cyclone separator 4, and the semicoke separated is through material returning device 5 and coal one
Rise and enter in gasification installation 1, and heat smoke (diagram E) is also fed in recirculating fluidized bed 7.But, this technological process is multiple
Miscellaneous, be primarily due to this technique take semicoke as heat carrier, therefore technological process include semicoke heating, promote, separate,
The techniques such as mixing, cause system flow to increase, substantially increase system failure rate；Meanwhile, the semicoke that this technique produces can only
For fluidized-bed combustion boiler, it is impossible to utilize on recirculating fluidized bed.
But, in China's electricity generation system, recirculating fluidized bed accounting is the highest, owing to CFBC is to coal volatile matter and particle diameter
Requiring higher, coal plug is the most little for the technique of recirculating fluidized bed.
Thus, current pyrolysis of coal plug technique still haves much room for improvement.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the purpose of the present invention
One of be to propose a kind of pyrolysis of coal reactor-recirculating fluidized bed combined system and utilize its method processing coal.
Concrete, radial canal is heated downstriker pyrolysis of coal reactor and is combined with recirculating fluidized bed by the present invention, wherein, and pyrolysis of coal
Reactor have employed heat accumulation type radiant tube and combines descending reactor, belongs to indirectly heating, such pyrolysis of coal reactor allow with
Existing recirculating fluidized bed is directly combined, and without existing recirculating fluidized bed is transformed on a large scale.The present invention is directed to follow
This New type coal plug technique of ring design of Fluidized bed, it is possible to effectively produce combustible gas and pyrolysis oil co-production electric power, and utilize existing
There is the induction system of recirculating fluidized bed, it is achieved semicoke heat is sent, ensure the burning of semicoke, and reduce coal plug process costs.
In view of this, in one aspect of the invention, the invention provides a kind of pyrolysis of coal reactor-recirculating fluidized bed combination is
System.According to embodiments of the invention, this pyrolysis of coal reactor-recirculating fluidized bed combined system includes:
Pyrolysis of coal reactor, described pyrolysis of coal reactor has coal entrance and semicoke outlet, and wherein, described coal entrance is arranged at
The top of described pyrolysis of coal reactor, the outlet of described semicoke is arranged at the bottom of described pyrolysis of coal reactor；
It is provided with many oil gas in described pyrolysis reactor and derives pipeline, many gas-collecting branch pipes, heat accumulation type radiant tubes, described coal
Pyrolysis reactor is outside equipped with gas gathering manifold, and described gas gathering manifold is provided with many connecting lines, and described connecting line extends
Sidewall through described pyrolysis of coal reactor is connected with described gas-collecting branch pipe；
Wherein, described gas gathering manifold is adjacent to the periphery wall of described pyrolysis of coal reactor and is vertically arranged,
One end of described gas-collecting branch pipe is connected with described gas gathering manifold by described connecting line, and the other end is communicated to described oil
Gas delivery line road；
Described heat accumulation type radiant tube is along the short transverse multi-tier arrangement of described pyrolysis reactor, and every layer has many in level side
Heat accumulation type radiant tube the most parallel to each other；
Recirculating fluidized bed, described recirculating fluidized bed is provided with semicoke entrance, bunker coal entrance and air intake, described semicoke
Entrance is connected with the outlet of described semicoke.
Inventor finds, the pyrolysis of coal reactor of the present invention directly can be combined with existing recirculating fluidized bed, and without to existing
Some recirculating fluidized beds are transformed on a large scale, with existing pyrolysis of coal plug technique-recirculating fluidized bed generating set associated be
System is compared, and in the pyrolysis of coal reactor-recirculating fluidized bed combined system of the present invention, pyrolysis of coal reactor and recirculating fluidized bed can
Running, the two interferes with each other relatively small relatively independently.The present invention pyrolysis of coal reactor-recirculating fluidized bed combined system can
To be effective to produce combustible gas and pyrolysis oil co-production electric power, and utilize the induction system of existing recirculating fluidized bed, it is achieved half
Burnt heat is sent, and ensures the burning of semicoke, improves the capacity usage ratio of electricity generation system and reduces coal plug process costs.Work as the present invention
Pyrolysis of coal reactor-recirculating fluidized bed combined system when being used for generating electricity, it can be ensured that the stability of electricity generation system.
In one embodiment of the invention, every layer of described heat accumulation type radiant tube includes multiple parallel and equally distributed storage
Hot type radial canal, and each described heat accumulation type radiant tube and each the heat accumulating type spoke in adjacent upper and lower two-layer heat accumulation type radiant tube
Penetrate and manage parallel and be in staggered distribution in the short transverse of described pyrolysis of coal reactor.Thus, it is possible to significantly improve the fast of coal charge
Speed pyrolysis efficiency, and then improve the productivity of tar.
In one embodiment of the invention, described gas-collecting branch pipe is arranged parallel to each other along the length direction of described gas gathering manifold.
In one embodiment of the invention, described gas-collecting branch pipe is perpendicular to described gas collecting main pipe.
In one embodiment of the invention, many described gas-collecting branch pipes are total with described gas collection by a described connecting line
Pipe connects.
In one embodiment of the invention, described oil gas derives the pipeline short transverse laminates along described pyrolysis reactor
Putting, every layer has many oil gas the most parallel to each other and derives pipeline.
In one embodiment of the invention, oil gas described in same layer is derived pipeline and is communicated to same described gas-collecting branch pipe.
In one embodiment of the invention, described oil gas is derived pipeline and is arranged in parallel with described heat accumulation type radiant tube, and institute
State the respective left and right sides of heat accumulation type radiant tube and be symmetrically arranged with two oil gas derivation pipelines.
In one embodiment of the invention, described oil gas derive pipeline and neighbouring described heat accumulation type radiant tube tube wall it
Spacing is 1/2-3 times that described oil gas derives pipe diameter d.
In one embodiment of the invention, described oil gas is derived and is provided with multiple through hole on the tube wall of pipeline.
In one embodiment of the invention, the plurality of through hole uniformly divides on the length direction that described oil gas derives pipeline
Cloth.
In one embodiment of the invention, described pyrolysis of coal reactor-recirculating fluidized bed combined system farther includes: oil
Gas mixture after-treatment device, described gas mixture after-treatment device connects with one end of described gas gathering manifold.
In one embodiment of the invention, described gas mixture after-treatment device includes: Oil-gas Separation assembly, described
Oil-gas Separation assembly has gas mixture import, pyrolysis gas outlet and tar outlet, and described gas mixture import is with described
One end connection of gas gathering manifold；Pyrolysis gas purification assembly, described pyrolysis gas purification assembly has pyrolysis gas import and combustible gas goes out
Mouthful, described pyrolysis gas import is connected with described pyrolysis gas outlet, tar refining assembly, and described tar refining assembly has tar
Entrance and oil product outlet, described tar entrance is connected with described tar outlet.
In another aspect of this invention, the invention provides one and utilize foregoing pyrolysis of coal reactor-recirculating fluidized bed connection
The method processing coal by system.According to embodiments of the invention, the method comprises the following steps:
(1) coal is delivered to described pyrolysis of coal reactor and carries out pyrolysis processing, in order to obtain semicoke and gas mixture；
(2) described semicoke is delivered to described recirculating fluidized bed, makes described semicoke carry out combustion power generation；And
(3) described gas mixture is delivered to described gas mixture after-treatment device and carries out post processing, thus obtain flammable
Gas and oil product.
Surprisingly, it was found that in the method, it is possible to use pyrolysis of coal reactor is direct with existing recirculating fluidized bed
Combination, and without transforming existing recirculating fluidized bed, pyrolysis of coal reactor and recirculating fluidized bed can relatively independently
Running, the two interferes with each other relatively small.The method can be effective to produce combustible gas and pyrolysis oil co-production electric power, and
Utilize the induction system of existing recirculating fluidized bed, it is achieved semicoke heat is sent, ensure the burning of semicoke, improve the energy of electricity generation system
Utilization rate also reduces coal plug process costs.
In one embodiment of the invention, step (3) including: described gas mixture is carried out Oil-gas Separation by (3-1)
Process, obtain tar and pyrolysis gas；(3-2) described pyrolysis gas is carried out purified treatment, obtain combustible gas；(3-3) by described
Tar carries out refinement treatment, obtains oil product.
The present invention at least has the advantages that
1) radial canal heating downstriker pyrolysis of coal reactor be combined with recirculating fluidized bed, the pyrolysis reactor of the present invention have employed
Heat accumulation type radiant tube combines descending reactor, belongs to heating indirectly, and such pyrolysis reactor allows ciculation fluidized with existing
Bed directly combination, and without existing recirculating fluidized bed is transformed on a large scale；Such as, it is only necessary to semicoke entrance is set.
2) hot semicoke is sent into recirculating fluidized bed, it is possible to increase the capacity usage ratio of electricity generation system.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become bright from the following description
Aobvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is existing furnace front coal head-drawing process structure schematic diagram.
Fig. 2 is the reactor of pyrolysis of coal according to an embodiment of the invention-recirculating fluidized bed combined system structural representation.
Fig. 3 is the pyrolysis of coal reactor according to another embodiment of the present invention-recirculating fluidized bed combined system part-structure schematic diagram.
Fig. 4 is the reactor of pyrolysis of coal in accordance with another embodiment of the present invention-recirculating fluidized bed combined system structural representation.
Fig. 5 is the pyrolysis of coal reactor according to further embodiment of the present invention-recirculating fluidized bed combined system structural representation.
Fig. 6 is the method utilizing pyrolysis of coal reactor-recirculating fluidized bed combined system to process coal according to an embodiment of the invention
Schematic flow sheet.
Fig. 7 is the side utilizing pyrolysis of coal reactor-recirculating fluidized bed combined system to process coal in accordance with another embodiment of the present invention
The schematic flow sheet of method.
Detailed description of the invention
Embodiments of the invention are described below in detail.The embodiments described below is exemplary, is only used for explaining the present invention,
And be not considered as limiting the invention.Unreceipted concrete technology or condition in embodiment, according to the document in this area
Described technology or condition or carry out according to product description.Agents useful for same or instrument unreceipted production firm person, be
Can by city available from conventional products.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward ",
Orientation or the position relationship of the instruction such as " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " are based on shown in the drawings
Orientation or position relationship, be for only for ease of describe the present invention and simplify describe rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or
Person implies the quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two,
Three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", the art such as " fixing "
Language should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be machinery
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection within part or the interaction relationship of two elements, unless otherwise clear and definite restriction.Ordinary skill for this area
For personnel, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be
One directly contacts with second feature, or the first and second features are by intermediary mediate contact.And, fisrt feature is
Two features " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of first
Characteristic level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature
Immediately below second feature or obliquely downward, or it is merely representative of fisrt feature level height less than second feature.
In one aspect of the invention, the invention provides a kind of pyrolysis of coal reactor-recirculating fluidized bed combined system.According to this
Inventive embodiment, with reference to Fig. 2, this pyrolysis of coal reactor-recirculating fluidized bed combined system include pyrolysis of coal reactor 100 with
And recirculating fluidized bed 200.
According to embodiments of the invention, pyrolysis of coal reactor 100 has coal entrance 110 and semicoke outlet 120.Wherein, coal
Entrance 110 is arranged at the top of pyrolysis of coal reactor 100, is suitable in fine coal supply to pyrolysis of coal reactor 100；Semicoke
Outlet 120 is arranged at the bottom of pyrolysis of coal reactor 100, and the semicoke being suitable to produce pyrolysis of coal discharges pyrolysis of coal reactor 100.
According to embodiments of the invention, it is provided with many oil gas in pyrolysis of coal reactor 100 and derives pipeline 140, many gas collections
Arm 160, heat accumulation type radiant tube 170.Pyrolysis of coal reactor 100 is outside equipped with gas gathering manifold 150, on gas gathering manifold 150
Being provided with many connecting lines 180, connecting line 180 extends through sidewall and the gas-collecting branch pipe 160 of pyrolysis of coal reactor 100
It is connected.
According to a particular embodiment of the invention, heat accumulation type radiant tube 160 in the inside of pyrolysis of coal reactor 100 along pyrolysis of coal
The short transverse multi-tier arrangement of reactor 100, every layer has many heat accumulation type radiant tubes the most parallel to each other.
According to a particular embodiment of the invention, every layer of heat accumulation type radiant tube 160 includes multiple parallel and equally distributed heat accumulating type spoke
Penetrate pipe and each heat accumulation type radiant tube is parallel with each heat accumulation type radiant tube in adjacent upper and lower two-layer heat accumulation type radiant tube.Root
According to the concrete example of the present invention, heat accumulation type radiant tube can be the circle of DN200～300mm or semicircle radial canal.Thus,
The pyrolysis efficiency of pyrolysis material can be significantly improved, and then improve pyrolysis oil yield.
According to a particular embodiment of the invention, the concrete set-up mode of heat accumulation type radiant tube 160 is not particularly limited, this area
Technical staff can carry out appropriate design according to the temperature field that actual pyrolytic reaction needs.In some embodiments of the invention,
The concrete set-up mode of heat accumulation type radiant tube 160 includes but not limited to: adjacent heat accumulation type radiant tube about 160 center distance can
Thinking 300～500mm, adjacent heat accumulation type radiant tube vertical centre spacing can be 400～800mm, multilamellar heat accumulation type radiant tube
The number of plies can be 10-30 layer.It is to be understood that adjacent heat accumulation type radiant tube left and right center distance can be understood as same
Distance in the heart in heat accumulation type radiant tube on layer, and adjacent heat accumulation type radiant tube vertical centre spacing can be understood as adjacent up and down
Distance in the heart in the adjacent heat accumulation type radiant tube of two interlayers.Inventor finds, this kind of structure is arranged so that in reactor
Uniform distribution of temperature field, such that it is able to significantly improve the pyrolysis efficiency of material, and then improves the yield of pyrolysis oil.
According to a particular embodiment of the invention, heat accumulation type radiant tube can be unidirectional, gas heat-accumulated type radial canal, i.e. by storing
The heat that combustion gas is produced by hot type radial canal body carries out heat supply in the way of radiation.According to a particular embodiment of the invention,
Gas control valve (not shown) can be provided with on heat accumulation type radiant tube.Thus, it is possible to adjust by adjusting gas control valve
The flow of the combustion gas that joint is passed through heat accumulation type radiant tube realizes the accurate temperature controlling to pyrolytic process, such that it is able to significantly improve material
Pyrolysis efficiency, and then improve pyrolysis oil yield.
Concrete, the flow etc. that can be passed through the combustion gas of heat accumulation type radiant tube by adjustment realizes the accurate temperature controlling to pyrolytic process,
The every independent temperature control of heat accumulation type radiant tube, and the combustion system of heat accumulation type radiant tube employing periodically commutation so that single accumulation of heat
The temperature field of formula radial canal is more or less the same in 30 DEG C, thus ensures the uniformity of reactor temperature field, such as logical by adjusting
The flow of the combustion gas entering heat accumulation type radiant tube makes pyrolysis reactor be divided into three districts, i.e. drying and dehydrating district, pyrolysis from top to bottom
Reaction zone, semicoke maturation zone, can be by existing to the temperature range in the control realization drying and dehydrating district of heat accumulation type radiant tube
680-730 degree Celsius, it is possible to quickly slough the moisture contained by pyrolysis material, drying and dehydrating district temperature is slightly higher simultaneously, can subtract
Few drying and dehydrating section length.Pyrolysis reaction region temperature range can control at 500-650 degree Celsius, to ensure the abundant of material
Pyrolysis, semicoke maturation zone temperature can control at 500-600 degree Celsius, thus a heating part is pyrolyzed the most completely further
Material.
According to embodiments of the invention, gas gathering manifold 150 is adjacent to the periphery wall of pyrolysis of coal reactor 100 and is vertically arranged, collection
Being provided with many connecting lines 180 on gas house steward 150, connecting line 180 extends through the sidewall of pyrolysis of coal reactor 100
Being connected with one end of gas-collecting branch pipe 160, oil gas is derived pipeline 140 and is connected with the other end of gas-collecting branch pipe 160.Wherein,
The concrete set-up mode of gas-collecting branch pipe 160 is not particularly limited, such as, include but not limited to the length side along gas gathering manifold 150
It is arranged in parallel to each other.Every gas-collecting branch pipe 160 can be each individually by a connecting pipeline 180 and gas gathering manifold 150
It is connected, it is also possible to many gas-collecting branch pipes 160 are communicated to by same connecting line 180 near one end of gas gathering manifold 150
Gas gathering manifold 150.According to embodiments of the invention, permissible between the setting direction of gas-collecting branch pipe 160 and gas gathering manifold 150
Having certain angle, in some concrete examples, gas-collecting branch pipe 160 is perpendicular to gas collecting main pipe 150 and arranges.Thus, be conducive to
The quick derivation of gas mixture.
According to embodiments of the invention, oil gas is derived pipeline 140 and is connected with one end of gas-collecting branch pipe 160, and oil gas is led
Go out and be provided with through hole on the tube wall of pipe 140.Thus, by arranging oil gas derivation pipeline so that the heat produced in pyrolytic process
Solve oil gas quickly to derive, thus effectively suppression oil gas second pyrolysis, improve pyrolysis oil yield.According to embodiments of the invention,
The quantity of through hole is not particularly limited, and in some concrete examples, oil gas is derived and is provided with multiple leading on the tube wall of pipeline 140
Hole, it is preferable that the plurality of through hole is derived at oil gas and is uniformly distributed on the length direction of pipeline 140.Thus, beneficially oil gas
Mixture is quickly derived.
According to embodiments of the invention, oil gas derives the pipeline 140 short transverse multi-tier arrangement along pyrolysis reactor 100, often
Layer has many oil gas the most parallel to each other derives pipeline.According to a particular embodiment of the invention, same layer oil
Gas delivery line road 140 is communicated to same gas-collecting branch pipe 160.Thereby, it is possible to gas mixture is concentrated, is derived rapidly.
According to embodiments of the invention, oil gas is derived pipeline 140 and is arranged in parallel with heat accumulation type radiant tube 170, and heat accumulating type spoke
The left and right sides penetrating pipe 170 is symmetrically arranged with two oil gas derivation pipelines 140.Inventor finds, by every heat accumulating type
Radial canal both sides are installed oil gas and are derived pipeline, and the gas mixture that pyrolysis produces is derived rapidly by deriving pipeline, thus has
Inhibit to effect the second pyrolysis of oil gas, and then the yield of raising pyrolysis oil, good in economic efficiency.
According to embodiments of the invention, as it is shown on figure 3, oil gas derives pipeline 140 and neighbouring heat accumulation type radiant tube 170
Spacing L of tube wall is 1/2-3 times that oil gas derives pipe diameter d.The pyrolysis oil gas that thus can derive generation at once mixes
Compound, it is to avoid pyrolysis oil cracks, improves pyrolysis oil productivity.
According to embodiments of the invention, pyrolysis of coal reactor 100 is additionally provided with the combustion needed for heat accumulation type radiant tube burning simultaneously
Smoke entrance (not shown) after material, air and burning, fuel gas inlet and air intake are respectively and heat accumulation type radiant tube
170 are connected.The heat smoke produced that burns in heat accumulation type radiant tube may be used for treating the fine coal raw material of pyrolysis be dried and
The pre-heat treatment, thus further increases pyrolysis of coal reactor efficiency and efficiency of combustion, and achieves comprehensive utilization resource, fall
The purpose of low energy consumption.
According to embodiments of the invention, the height of pyrolysis of coal reactor 100 and width are preferably suitable, and width can be 2-6 rice,
Highly can control by controlling the quantity and spacing of every layer of heat accumulation type radiant tube 170, the height of usual pyrolysis of coal reactor can
Think 5～20m.Thus, it is possible to realize the pyrolysis completely to material.It will be understood by those skilled in the art that pyrolysis of coal is reacted
The height of device 100 and width are not limited to above-mentioned scope, and those skilled in the art can select the most flexibly.
According to embodiments of the invention, recirculating fluidized bed 200 is provided with semicoke entrance 210, bunker coal entrance 220 and sky
Gas entrance 230, wherein, semicoke entrance 210 is connected with semicoke outlet 120, is suitable to half will produced in pyrolysis of coal reactor
Burnt supply is respectively adapted in recirculating fluidized bed 200 to recirculating fluidized bed 200, bunker coal entrance 220 and air intake 230
Supply bunker coal and air, be beneficial to carry out combustion power generation.Specifically, recirculating fluidized bed 200 can be using semicoke as only
One fuel carries out combustion power generation, i.e. bunker coal entrance 220 and closes, and only supplies semicoke by semicoke entrance 210 and carries out burning
Electricity；Recirculating fluidized bed 200 can also carry out combustion power generation using the mixture of semicoke and coal as fuel, passes through fuel the most simultaneously
Coal entrance 220 and semicoke entrance 210 carry out mixed combustion generating for coal supply and semicoke respectively in recirculating fluidized bed 200.Send out
A person of good sense finds, burns by the hot semicoke directly heat produced in pyrolysis of coal reactor 100 is delivered to recirculating fluidized bed 200
Generating, can not only guarantee the combustion stability of recirculating fluidized bed 200, and can significantly improve capacity usage ratio, economical
Property improve, and when utilize this pyrolysis of coal reactor-recirculating fluidized bed combined system be able to ensure that when carrying out combustion power generation generating system
The stability of system.
According to embodiments of the invention, with reference to Fig. 4 and Fig. 5, this pyrolysis of coal reactor-recirculating fluidized bed combined system can enter
One step includes: gas mixture after-treatment device 400, this gas mixture after-treatment device 400 and gas gathering manifold 150
One end is connected.Specifically, gas mixture after-treatment device 400 may include that Oil-gas Separation assembly 410, and pyrolysis gas is clean
Change assembly 420 and tar refining assembly 430.Gas mixture after-treatment device 400 is suitable to the air-fuel mixture obtaining pyrolysis
Thing carries out post processing, carries out Oil-gas Separation, pyrolysis gas purification and tar refining etc. successively and processes, attached to obtain purified gas and height
Value added oil product.
According to embodiments of the invention, Oil-gas Separation assembly 410 has gas mixture import 411, pyrolysis gas outlet 412
With tar outlet 413, gas mixture import 411 is connected with one end of gas gathering manifold 150, tar outlet 413 and tar
The tar entrance 431 of refined assembly 430 is connected, and this Oil-gas Separation assembly 410 is suitable to thermogenetic for solution gas mixture
Separating and obtain pyrolysis gas and tar, Oil-gas Separation assembly 410 carries out the concrete mode of Oil-gas Separation and is not particularly limited, such as,
Include but not limited to condensation, spray etc..
According to embodiments of the invention, pyrolysis gas purification assembly 420 has pyrolysis gas import 421 and combustible gas outlet 422,
Wherein, pyrolysis gas import 421 is connected with pyrolysis gas outlet 412, and pyrolysis gas purification assembly 420 is suitable to carry out pyrolysis gas
The operation such as desulfurization, deamination carries out purified treatment to obtain clean combustible gas.In certain embodiments, pyrolysis gas purification assembly
420 can be provided with two combustible gases exports 422 (not shown)s, one of them and the heat accumulating type in pyrolysis of coal reactor
Radial canal is connected, for providing the fuel of heat accumulation type radiant tube combustion heating, it is achieved the Appropriate application of thermal decomposition product, and another
Individual pyrolysis gas outlet 422 is as product gas outlet.
According to embodiments of the invention, tar refining assembly 430 have tar entrance 431 and oil product outlet 432, wherein,
Tar entrance 431 is connected with tar outlet 413.The tar that this tar refining assembly 430 is suitable to separating acquisition refines
Process, to obtain high added value oil product, such as, include but not limited to that the tar to isolated carries out hydrofinishing.
Pyrolysis of coal reactor-recirculating fluidized bed the combined system of the present invention arranges coal plug technique, efficient solution for recirculating fluidized bed
The problem that coal plug leading portion pyrolytic process of having determined is complicated, in the combined system of the present invention, pyrolysis of coal reactor can follow with existing
Ring fluid bed is directly combined, and send hot semicoke by First air, it is not necessary to transform existing recirculating fluidized bed, with existing
System associated with pyrolysis of coal plug technique-recirculating fluidized bed generating set is compared, the pyrolysis of coal reactor-recirculating fluidized bed of the present invention
In combined system, pyrolysis of coal reactor and recirculating fluidized bed can run relatively independently, and the two interferes with each other relatively small,
Thermal decomposition product Appropriate application, cost of electricity-generating is substantially reduced.Pyrolysis of coal reactor-recirculating fluidized bed the combined system of the present invention is permissible
It is effective to produce combustible gas and pyrolysis oil co-production electric power, and utilizes the induction system of existing recirculating fluidized bed, it is achieved semicoke
Heat delivers to recirculating fluidized bed, and retains the combustion system of original recirculating fluidized bed, it is achieved in pyrolysis char and recirculating fluidized bed
Coal mix burning, ensure the stability of CFBC, pyrolysis gas and pyrolytic tar processed simultaneously, produce flammable
Gas and prepared tar are as major product, it is achieved the economic benefit of coal plug.Pyrolysis of coal reactor-recirculating fluidized bed as the present invention
When combined system is used for generating electricity, it can be ensured that the stability of electricity generation system.
In another aspect of this invention, the invention provides one and utilize foregoing pyrolysis of coal reactor-recirculating fluidized bed connection
The method processing coal by system.According to embodiments of the invention, with reference to Fig. 6, the method comprises the following steps:
S100: coal is delivered to described pyrolysis of coal reactor and carries out pyrolysis processing, in order to obtain semicoke and gas mixture.
According to embodiments of the invention, the particle diameter supplying the coal to pyrolysis of coal reactor can be less than 3 millimeters, thus, and heat
Solving material to be heated evenly in pyrolysis reactor, pyrolytic reaction efficiency is higher, and pyrolytic tar yield is higher.
According to a particular embodiment of the invention, the temperature on pyrolysis reactor top is 680-730 degree Celsius, and the temperature at middle part is
500-650 degree Celsius, the temperature of bottom is 500-600 degree Celsius.Specifically, pyrolysis material in pyrolysis reactor from top to bottom
Motion, sequentially passes through drying and dehydrating district, top, pyrolysis reaction region, middle part and semicoke maturation zone, bottom, is pyrolyzed in drying and dehydrating district
Moisture quickly sloughed by material, then carries out pyrolytic reaction in pyrolysis reaction region, obtains gas mixture and semicoke, gas mixture
Derive pipeline by oil gas quickly to derive, and collect through gas-collecting branch pipe, gas gathering manifold and supply to gas mixture post processing dress
Putting, the semicoke obtained continues to move downwardly into semicoke maturation zone, then discharges pyrolysis of coal reactor by semicoke outlet.
S200: semicoke is delivered to described recirculating fluidized bed, makes semicoke carry out combustion power generation.
According to embodiments of the invention, in this step, the pyrolysis high-temperature semi-coke of 400-600 degree Celsius is discharged from semicoke outlet,
Deliver to recirculating fluidized bed through First air, carry out combustion power generation.
S300: described gas mixture is delivered to described gas mixture after-treatment device and carries out post processing, thus obtain can
Combustion gas and oil product.
According to embodiments of the invention, with reference to Fig. 7, step S300 may further include following steps: S310: by oil gas
Mixture carries out Oil-gas Separation process, obtains tar and pyrolysis gas；S320: pyrolysis gas is carried out purified treatment, obtains flammable
Gas；And S330: tar is carried out refinement treatment, obtains oil product.Thus, it is possible to effectively thermal decomposition product is fitted
Suitable post processing, obtains combustible gas and the high added value oil product of cleaning.
Inventor finds, in the method, it is possible to use pyrolysis of coal reactor is directly combined with existing recirculating fluidized bed, and
Without transforming existing recirculating fluidized bed, pyrolysis of coal reactor and recirculating fluidized bed can run relatively independently, and two
Person interferes with each other relatively small.The method can be effective to produce combustible gas and pyrolysis oil co-production electric power, and utilizes existing
The induction system of recirculating fluidized bed, it is achieved semicoke heat is sent, ensures the burning of semicoke, and reduces coal plug process costs.
Referring to Fig. 5 and Fig. 7, describe pyrolysis of coal reactor-recirculating fluidized bed combined system and the utilization of the present invention in detail
The duty of its method processing coal is described.
Specifically, by coal entrance 110, the fine coal that particle diameter is crushed to less than 3 millimeters in advance is supplied to pyrolysis of coal reactor
100, fine coal from top to bottom moves in pyrolysis of coal reactor 100, is pyrolyzed under the temperature field that heat accumulation type radiant tube provides
Reaction, produces gas mixture and semicoke.On the one hand, the gas mixture obtained derives the through hole of pipeline 140 by oil gas
Enter oil gas and derive pipeline 140, derive pipeline 140 by oil gas and be directed into gas-collecting branch pipe 160, then pass through connecting pipeline
180 are collected to gas gathering manifold 150, and are entered by gas mixture entrance 411 and carry out oil gas in Oil-gas Separation assembly 410 and divide
From process, the pyrolysis gas of isolated is discharged through pyrolysis gas outlet 412, then enters pyrolysis gas through pyrolysis gas import 421 clean
Changing assembly 420, in pyrolysis gas purification assembly 420, pyrolysis gas carries out the operation such as desulfurization, deamination and carries out purified treatment,
The purified gas part arrived, through combustible gas outlet 422 discharge, obtains combustible gas product, and a part can be gone out by another combustible gas
Mouth 422 supplies the heat accumulation type radiant tube to pyrolysis of coal reactor, separates in combustion heating, Oil-gas Separation assembly 410
The tar obtained enters tar refining assembly 430 through tar outlet 413 and tar import 431 successively, at tar refining assembly
In 430, tar being carried out hydrotreating, the high added value oil product obtained is through oil product outlet 432 discharge.On the other hand, pyrolysis
The semicoke produced, through semicoke outlet 120 discharge pyrolysis of coal reactor 100, then enters recirculating fluidized bed through semicoke entrance 210
200, in recirculating fluidized bed 200, supply bunker coal and air by bunker coal entrance 220 and air intake 230 simultaneously,
In recirculating fluidized bed 200, semicoke and coal carry out mixing burning generating.
Embodiment
Pyrolyzing coal is crushed to below particle diameter 3mm, sends in the pyrolysis of coal reactor-recirculating fluidized bed combined system of the present invention
Process, obtain purified gas and high-quality oil product.Concrete steps are with reference to the above-mentioned pyrolysis of coal reactor to the present invention-follow
Ring fluid bed combined system and utilize it to process the description of duty of the method for coal.Wherein, pyrolysis gas forms such as following table institute
Showing, the pyrolysis char temperature of generation is 515 DEG C, by with generating coal mixed scale powder system, obtain the coal dust of 200 microns
It is sent directly into CFBC generating.
Compared with the situation of generating feed coal all with the fuel of recirculating fluidized bed, the pyrolysis discharged from pyrolysis of coal reactor
When semicoke accounts for the 50% of ciculation fluidized bed material gross weight, whole system energy utilization efficiency improves 3.47%, clean
The income of coal gas and coal tar is converted in cost of electricity-generating, and cost of electricity-generating reduces about 5.13%.
In describing the invention, term " first ", " second " are only used for describing purpose, and it is not intended that indicate or hint phase
To importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can
To express or to implicitly include one or more this feature.In describing the invention, " multiple " are meant that two
Or two or more, unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " concrete example ",
Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes
It is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term necessarily
It is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be arbitrary
Individual or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be combined by art personnel
And combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary,
Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, revises, replaces and modification.
Claims (10)
1. pyrolysis of coal reactor-recirculating fluidized bed combined system, it is characterised in that including:
Pyrolysis of coal reactor, described pyrolysis of coal reactor has coal entrance and semicoke outlet, and wherein, described coal entrance is arranged at
The top of described pyrolysis of coal reactor, the outlet of described semicoke is arranged at the bottom of described pyrolysis of coal reactor；
It is provided with many oil gas in described pyrolysis of coal reactor and derives pipeline, many gas-collecting branch pipes and heat accumulation type radiant tube, described
Pyrolysis of coal reactor is outside equipped with gas gathering manifold, and described gas gathering manifold is provided with many connecting lines, and described connecting line prolongs
The sidewall extending through described pyrolysis of coal reactor is connected with described gas-collecting branch pipe；
Wherein, described gas gathering manifold is adjacent to the periphery wall of described pyrolysis of coal reactor and is vertically arranged,
One end of described gas-collecting branch pipe is connected with described gas gathering manifold by described connecting line, and the other end is communicated to described oil
Gas delivery line road；
Described heat accumulation type radiant tube is along the short transverse multi-tier arrangement of described pyrolysis of coal reactor, and every layer has many in level
Heat accumulation type radiant tube parallel to each other on direction；
Recirculating fluidized bed, described recirculating fluidized bed is provided with semicoke entrance, bunker coal entrance and air intake, described semicoke
Entrance is connected with the outlet of described semicoke.
Pyrolysis of coal reactor-recirculating fluidized bed combined system the most according to claim 1, it is characterised in that every layer of institute
State heat accumulation type radiant tube and include multiple parallel and equally distributed heat accumulation type radiant tube, and each described heat accumulation type radiant tube with
Each heat accumulation type radiant tube in adjacent upper and lower two-layer heat accumulation type radiant tube is parallel and height along described pyrolysis of coal reactor
It is in staggered distribution on direction.
Pyrolysis of coal reactor-recirculating fluidized bed combined system the most according to claim 1, it is characterised in that described collection
Gas branch pipe is arranged parallel to each other along the length direction of described gas gathering manifold,
Optionally, described gas-collecting branch pipe is perpendicular to described gas collecting main pipe,
Optionally, many described gas-collecting branch pipes are connected with described gas gathering manifold by a described connecting line.
Pyrolysis of coal reactor-recirculating fluidized bed combined system the most according to claim 1, it is characterised in that described oil
Gas delivery line road is along the short transverse multi-tier arrangement of described pyrolysis of coal reactor, and every layer has many and puts down the most each other
The oil gas of row derives pipeline,
Optionally, oil gas described in same layer is derived pipeline and is communicated to same described gas-collecting branch pipe.
Pyrolysis of coal reactor-recirculating fluidized bed combined system the most according to claim 1, it is characterised in that described oil
Gas delivery line road is arranged in parallel with described heat accumulation type radiant tube, and the respective left and right sides of described heat accumulation type radiant tube is symmetrical arranged
Two oil gas are had to derive pipeline,
Optionally, described oil gas derivation pipeline is that described oil gas is led with the spacing of the tube wall of neighbouring described heat accumulation type radiant tube
Go out 1/2-3 times of pipe diameter d.
Pyrolysis of coal reactor-recirculating fluidized bed combined system the most according to claim 1, it is characterised in that described oil
Multiple through hole it is provided with on the tube wall in gas delivery line road,
Optionally, the plurality of through hole is uniformly distributed on the length direction that described oil gas derives pipeline.
Pyrolysis of coal reactor-recirculating fluidized bed combined system the most according to claim 1, it is characterised in that further
Including:
Gas mixture after-treatment device, described gas mixture after-treatment device connects with one end of described gas gathering manifold.
Pyrolysis of coal reactor-recirculating fluidized bed combined system the most according to claim 7, it is characterised in that described oil
Gas mixture after-treatment device includes:
Oil-gas Separation assembly, described Oil-gas Separation assembly has gas mixture import, pyrolysis gas outlet and tar outlet, institute
State gas mixture import to connect with one end of described gas gathering manifold；
Pyrolysis gas purification assembly, described pyrolysis gas purification assembly has pyrolysis gas import and combustible gas outlet, and described pyrolysis gas enters
Mouth is connected with described pyrolysis gas outlet,
Tar refining assembly, described tar refining assembly has tar entrance and oil product outlet, and described tar entrance is with described
Tar outlet is connected.
9. the pyrolysis of coal reactor that a kind utilizes described in any one of claim 1-8-recirculating fluidized bed combined system processes the side of coal
Method, it is characterised in that including:
(1) coal is delivered to described pyrolysis of coal reactor and carries out pyrolysis processing, in order to obtain semicoke and gas mixture；
(2) described semicoke is delivered to described recirculating fluidized bed, makes described semicoke carry out combustion power generation；
(3) described gas mixture is delivered to described gas mixture after-treatment device and carries out post processing, thus obtain flammable
Gas and oil product.
Method the most according to claim 9, it is characterised in that step (3) including:
(3-1) described gas mixture is carried out Oil-gas Separation process, obtain tar and pyrolysis gas；
(3-2) described pyrolysis gas is carried out purified treatment, obtain combustible gas；
(3-3) described tar is carried out refinement treatment, obtain oil product.
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| CN117969217A (en) * | 2024-04-01 | 2024-05-03 | 上海轩鼎冶金科技集团有限公司 | Flue gas treatment system for detection and medicament life detection method |
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| CN101038077A (en) * | 2006-03-15 | 2007-09-19 | 株式会社荏原制作所 | Combustible treating device |
| CN205653401U (en) * | 2016-04-01 | 2016-10-19 | 北京神雾电力科技有限公司 | Coal pyrolytic reaction ware - circulating fluidized bed combined system |
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|---|---|---|---|---|
| CN101038077A (en) * | 2006-03-15 | 2007-09-19 | 株式会社荏原制作所 | Combustible treating device |
| CN205653401U (en) * | 2016-04-01 | 2016-10-19 | 北京神雾电力科技有限公司 | Coal pyrolytic reaction ware - circulating fluidized bed combined system |
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| CN117969217A (en) * | 2024-04-01 | 2024-05-03 | 上海轩鼎冶金科技集团有限公司 | Flue gas treatment system for detection and medicament life detection method |
| CN117969217B (en) * | 2024-04-01 | 2024-06-07 | 上海轩鼎冶金科技集团有限公司 | Flue gas treatment system for detection and medicament life detection method |
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