CN205653403U - Coal pyrolytic reaction ware - pulverized coal boiler combined system - Google Patents
Coal pyrolytic reaction ware - pulverized coal boiler combined system Download PDFInfo
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- CN205653403U CN205653403U CN201620271558.8U CN201620271558U CN205653403U CN 205653403 U CN205653403 U CN 205653403U CN 201620271558 U CN201620271558 U CN 201620271558U CN 205653403 U CN205653403 U CN 205653403U
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Abstract
The utility model provides a coal pyrolytic reaction ware pulverized coal boiler combined system, this combined system includes coal pyrolytic reaction ware and pulverized coal boiler. The utility model discloses a combined system can directly ally oneself with usefulness with current pulverized coal boiler with coal pyrolytic reaction ware, and need not to reform transform current pulverized coal boiler, coal pyrolytic reaction ware and pulverized coal boiler can move relatively independently, the two mutual interference is less relatively, and this combined system can effectively be used for producing combustible gas and pyrolysis oil and coproduction electric power, and the current pulverized coal boiler's of utilization conveying system, it send to realize semicoke heat, the burning of guarantee semicoke, and reduce the coal and pull out first technology cost, and can greatly reduced the produce coal oil -gas mixture's of pyrolytic reaction ware dustiness of the built -in cyclone of this coal pyrolytic reaction ware, and then thermal insulation is reduced to probably reaching of plug the pipe in effectively reducing the subsequent handling.
Description
Technical field
This utility model relates to coal sublevel cascade utilization technical field, in particular it relates to pyrolysis of coal reactor-pulverized-coal fired boiler connection
Use system.
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 pulverized-coal fired boiler.
But, in China's electricity generation system, pulverized-coal fired boiler accounting is the highest, owing to coal powder boiler combustion is to coal volatile matter and Particle size requirements
Higher, coal plug is the most little for the technique of pulverized-coal fired boiler.
Thus, current pyrolysis of coal plug technique still haves much room for improvement.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, this practicality is new
One of purpose of type is propose a kind of pyrolysis of coal reactor-pulverized-coal fired boiler combined system and utilize its method processing coal.
Concrete, this utility model is provided with a kind of New type coal plug technique for pulverized-coal fired boiler, produces combustible gas and pyrolysis oil
Co-production electric power, and utilize the induction system of existing pulverized-coal fired boiler, it is achieved semicoke heat is sent, and ensures the burning of semicoke, and reduces
Coal plug process costs.
In view of this, this utility model provides a kind of pyrolysis of coal reactor-pulverized-coal fired boiler combined system.According to this utility model
Embodiment, this pyrolysis of coal reactor-pulverized-coal fired boiler combined system includes:
Pyrolysis of coal reactor, described pyrolysis of coal reactor has coal entrance, semicoke outlet and gas mixture and exports, wherein,
Described coal entrance is arranged at the top of described pyrolysis of coal reactor, and the outlet of described gas mixture is arranged at described pyrolysis of coal reaction
On the roof of device and/or sidewall, 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, gas gathering manifold, many gas-collecting branch pipes, heat accumulating type radiation
Pipe and cyclone separator,
Wherein, described gas gathering manifold is adjacent to the internal perisporium 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, and the other end is communicated to described oil gas and derives pipeline；
Described cyclone separator has gas-solid mixture entrance, gas outlet and a solid outlet, wherein, described gas outlet with
The outlet of described gas mixture is connected, and one end of described gas gathering manifold extends the gas-solid mixing being communicated to described cyclone separator
Thing entrance；
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；
Pulverized-coal fired boiler, described pulverized-coal fired boiler is provided with oil burner and coal-char combustion device, the entrance of described coal-char combustion device
It is connected with the outlet of described semicoke.
Inventor finds, pyrolysis of coal reactor of the present utility model directly can be combined with existing pulverized-coal fired boiler, and without right
Existing pulverized-coal fired boiler is transformed, with existing pyrolysis of coal plug technique-recirculating fluidized bed generating set associated with compared with system,
In pyrolysis of coal reactor-pulverized-coal fired boiler combined system of the present utility model, pyrolysis of coal reactor and pulverized-coal fired boiler can be relatively independent
Ground runs, and the two interferes with each other relatively small.Pyrolysis of coal reactor-pulverized-coal fired boiler combined system of the present utility model can be effective
For producing combustible gas and pyrolysis oil co-production electric power, and utilize the induction system of existing pulverized-coal fired boiler, it is achieved semicoke heat is sent,
Ensure the burning of semicoke, and reduce coal plug process costs.When pyrolysis of coal reactor of the present utility model-pulverized-coal fired boiler combination is
When system is used for generating electricity, it can be ensured that the stability of electricity generation system.Special needs to be pointed out is, pyrolysis of coal inside reactor is arranged
There is cyclone separator, greatly reduce whirlwind insulation cost and the possibility of tar condensing blocking pipeline.
Alternatively, every layer of described heat accumulation type radiant tube includes multiple parallel and equally distributed heat accumulation type radiant tube, and each
Described 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 and along described
It is in staggered distribution in the short transverse of pyrolysis of coal reactor.Thus, it is possible to significantly improve the fast pyrogenation efficiency of coal charge, Jin Erti
The productivity of high tar.
Alternatively, described gas-collecting branch pipe is arranged parallel to each other along the length direction of described gas gathering manifold.
Alternatively, described gas-collecting branch pipe is perpendicular to described gas collecting main pipe.
Alternatively, described oil gas derives pipeline along the short transverse multi-tier arrangement of described pyrolysis reactor, every layer have many
Oil gas parallel to each other in horizontal direction derives pipeline.
Alternatively, oil gas described in same layer is derived pipeline and is communicated to same described gas-collecting branch pipe.
Alternatively, described oil gas is derived pipeline and is arranged in parallel with described heat accumulation type radiant tube, and described heat accumulation type radiant tube is each
The left and right sides be symmetrically arranged with two oil gas and derive pipelines.
Alternatively, 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.
Alternatively, described oil gas is derived and is provided with multiple through hole on the tube wall of pipeline.
Alternatively, the plurality of through hole is uniformly distributed on the length direction that described oil gas derives pipeline.
Alternatively, it is welded with support bar between outer wall and the described heat accumulation type radiant tube being adjacent of described cyclone separator.
Alternatively, described pyrolysis of coal reactor-pulverized-coal fired boiler combined system farther includes: fuel pulverizing plant, described fuel pulverizing plant
Having semicoke entrance, feed coal entrance and mixed material outlet, described semicoke entrance is connected with the outlet of described semicoke, described mixed
Close material outlet to be connected with described material inlet.
Alternatively, described pyrolysis of coal reactor-pulverized-coal fired boiler combined system farther includes: gas mixture after-treatment device,
Described gas mixture after-treatment device is connected with the outlet of described gas mixture.
Alternatively, described gas mixture after-treatment device includes: Oil-gas Separation assembly, and described Oil-gas Separation assembly has oil
Gas mixture import, pyrolysis gas outlet and tar outlet, described gas mixture import is connected with the outlet of described gas mixture；
Pyrolysis gas purification assembly, described pyrolysis gas purification assembly have pyrolysis gas import and combustible gas outlet, described pyrolysis gas import with
Described pyrolysis gas outlet is connected, tar refining assembly, and described tar refining assembly has tar entrance and oil product outlet, institute
State tar entrance to be connected with described tar outlet.
This utility model at least has the advantages that
1) radial canal heating downstriker pyrolysis of coal reactor be combined with pulverized-coal fired boiler, pyrolysis reactor of the present utility model uses
Heat accumulation type radiant tube combines descending reactor, belongs to heating indirectly, and such pyrolysis reactor allows and existing coal dust pot
Stove is directly combined, and without existing pulverized-coal fired boiler is transformed on a large scale；Such as, it is only necessary to semicoke entrance is set.
2) hot semicoke is sent into pulverized-coal fired boiler, it is possible to increase the capacity usage ratio of electricity generation system.
3) in pyrolysis of coal reactor, cyclone separator is set, greatly reduces the dustiness of the gas mixture of the pyrolysis reactor that produces coal
And pyrolysis of coal reactor is to the lagging facility of pipeline between pyrolysis oil gas mixture rapid condensation device, reduces the insulation face of equipment
Amass and reduce system heat tracing energy consumption, greatly reducing the possibility of tar condensing blocking pipeline simultaneously, reduce the place of follow-up tar
Reason cost.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by practice of the present utility model.
Accompanying drawing explanation
Fig. 1 existing furnace front coal head-drawing process structure schematic diagram.
Fig. 2 is the pyrolysis of coal reactor according to one embodiment of this utility model-pulverized-coal fired boiler combined system structural representation.
Fig. 3 is the pyrolysis of coal reactor according to another embodiment of this utility model-pulverized-coal fired boiler combined system part-structure signal
Figure.
Fig. 4 is the pyrolysis of coal reactor according to another embodiment of this utility model-pulverized-coal fired boiler combined system structural representation.
Fig. 5 is the pyrolysis of coal reactor according to this utility model further embodiment-pulverized-coal fired boiler combined system structural representation.
Fig. 6 is the pyrolysis of coal reactor according to this utility model further embodiment-pulverized-coal fired boiler combined system structural representation.
Fig. 7 is that the pyrolysis of coal reactor-pulverized-coal fired boiler combined system that utilizes according to one embodiment of this utility model processes the side of coal
The schematic flow sheet of method.
Fig. 8 is that the pyrolysis of coal reactor-pulverized-coal fired boiler combined system that utilizes according to another embodiment of this utility model processes coal
The schematic flow sheet of method.
Detailed description of the invention
Embodiment of the present utility model is described below in detail.The embodiments described below is exemplary, is only used for explaining this reality
With novel, and it is not intended that to restriction of the present utility model.Unreceipted concrete technology or condition in embodiment, according to this
The technology described by document or condition in field or carry out according to product description.Agents useful for same or the unreceipted production of instrument
Manufacturer person, be can by city available from conventional products.
In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ",
Orientation or the position relationship of the instruction such as " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " are based on accompanying drawing
Shown orientation or position relationship, be for only for ease of description this utility model and simplify description rather than instruction or hint institute
The device that refers to or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this reality
With novel restriction.
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 description of the present utility model, " multiple " are meant that at least two, such as two
Individual, three etc., unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing "
Should be interpreted broadly Deng term, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, 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
The connection of individual element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.Common for this area
For technical staff, above-mentioned term concrete meaning in this utility model can be understood as the case may be.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature
Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be first
Feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
At an aspect of the present utility model, this utility model provides a kind of pyrolysis of coal reactor-pulverized-coal fired boiler combined system.
According to embodiment of the present utility model, with reference to Fig. 2, this pyrolysis of coal reactor-pulverized-coal fired boiler combined system includes that pyrolysis of coal is reacted
Device 100 and pulverized-coal fired boiler 200.
According to embodiment of the present utility model, pyrolysis of coal reactor 100 has coal entrance 110, semicoke outlet 120 and oil gas
Mixture outlet 130.Wherein, coal entrance 110 is arranged at the top of pyrolysis of coal reactor 100, is suitable to supply extremely fine coal
In pyrolysis of coal reactor 100；Gas mixture outlet 130 is arranged on roof and/or the sidewall of pyrolysis of coal reactor 100,
The gas mixture being suitable to produce pyrolysis of coal discharges pyrolysis of coal reactor 100；Semicoke outlet 120 is arranged at pyrolysis of coal reaction
The bottom of device 100, the semicoke being suitable to produce pyrolysis of coal discharges pyrolysis of coal reactor 100.
According to embodiment of the present utility model, it is provided with many oil gas in pyrolysis of coal reactor 100 and derives pipeline 140, gas collection
House steward 150, many gas-collecting branch pipes 160, heat accumulation type radiant tube 170 and cyclone separator 180.
According to specific embodiment of the utility model, heat accumulation type radiant tube 160 in the inside of pyrolysis of coal reactor 100 along coal
The short transverse multi-tier arrangement of pyrolysis reactor 100, every layer has many heat accumulating type the most parallel to each other radiation
Pipe.According to specific embodiment of the utility model, every layer of heat accumulation type radiant tube 160 includes multiple parallel and equally distributed
Heat accumulation type radiant tube and each heat accumulation type radiant tube and each heat accumulation type radiant tube in adjacent upper and lower two-layer heat accumulation type radiant tube
Parallel.According to concrete example of the present utility model, heat accumulation type radiant tube can be circle or the semicircle of DN200～300mm
Radial canal.Thus, it is possible to significantly improve the pyrolysis efficiency of pyrolysis material, and then improve pyrolysis oil yield.
According to specific embodiment of the utility model, the concrete set-up mode of heat accumulation type radiant tube 160 is not particularly limited, this
Skilled person can carry out appropriate design according to the temperature field that actual pyrolytic reaction needs.In realities more of the present utility model
Executing in example, the concrete set-up mode of heat accumulation type radiant tube 160 includes but not limited to: in adjacent heat accumulation type radiant tube about 160
In the heart away from being 300～500mm, adjacent heat accumulation type radiant tube vertical centre spacing can be 400～800mm, multilamellar accumulation of heat
The number of plies of formula radial canal can be 10-30 layer.It is to be understood that adjacent heat accumulation type radiant tube left and right center distance can be managed
Solve as distance in the heart in heat accumulation type radiant tube on same layer, and adjacent heat accumulation type radiant tube vertical centre spacing can be understood as
Distance in the heart in the adjacent heat accumulation type radiant tube of adjacent upper and lower two interlayers.Inventor finds, this kind of structure arrange so that
Reactor temperature field distribution is uniform, such that it is able to significantly improve the pyrolysis efficiency of material, and then improves the yield of pyrolysis oil.
According to specific embodiment of the utility model, heat accumulation type radiant tube can be unidirectional, gas heat-accumulated type radial canal, the most logical
Cross the heat that combustion gas produces by heat accumulation type radiant tube body and carry out heat supply in the way of radiation.According to tool of the present utility model
Body embodiment, heat accumulation type radiant tube can be provided with gas control valve (not shown).Thus, it is possible to fired by adjustment
The flow of the combustion gas that controlled atmosphere joint valve regulation is passed through heat accumulation type radiant tube realizes the accurate temperature controlling to pyrolytic process, such that it is able to aobvious
Write the pyrolysis efficiency improving material, and then improve the yield of pyrolysis oil.
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 embodiment of the present utility model, gas gathering manifold 150 is adjacent to the internal perisporium of pyrolysis of coal reactor 100 and is vertically arranged,
One end of gas-collecting branch pipe 160 is connected with gas gathering manifold 150, and the other end is communicated to oil gas and derives pipeline 140.Gas-collecting branch pipe
The concrete set-up mode of 160 is not particularly limited, such as, include but not limited to that the length direction along gas gathering manifold 150 is put down each other
Row is arranged.Every gas-collecting branch pipe 160 can individually be connected with gas gathering manifold 150, it is also possible to two or many gas-collecting branch pipes
160 are communicated to gas gathering manifold 150 near one end of gas-collecting branch pipe by same connection pipeline 161.According to reality of the present utility model
Execute example, between gas-collecting branch pipe 160 and gas gathering manifold 150, can have certain angle, in some concrete examples, gas-collecting branch pipe
160 are perpendicular to gas collecting main pipe 150 is arranged.Thus, beneficially the quick of gas mixture is derived.
According to embodiment of the present utility model, oil gas is derived pipeline 140 and is connected with one end of gas-collecting branch pipe 160, and oil
It is provided with through hole on the tube wall of gas delivery line 140.Thus, by arranging oil gas derivation pipeline so that pyrolytic process produces
Pyrolysis oil gas quickly derive, thus effectively suppression oil gas second pyrolysis, improve pyrolysis oil yield.According to of the present utility model
Embodiment, the quantity of through hole is not particularly limited, and in some concrete examples, oil gas is derived and arranged on the tube wall of pipeline 140
There is multiple through 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, have
It is beneficial to gas mixture quickly derive.
According to embodiment of the present utility model, oil gas derives the pipeline 140 short transverse multi-tier arrangement along pyrolysis reactor 100,
Every layer has many oil gas the most parallel to each other and derives pipeline.According to specific embodiment of the utility model, with
One layer of oil gas is derived pipeline 140 and is communicated to same gas-collecting branch pipe 160.Thereby, it is possible to gas mixture is concentrated, quickly
Ground is derived.
According to embodiment of the present utility model, oil gas is derived pipeline 140 and is arranged in parallel with heat accumulation type radiant tube 170, and accumulation of heat
The left and right sides of formula radial canal 170 is symmetrically arranged with two oil gas and derives pipeline 140.Inventor finds, by every storage
Hot 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, from
And restrained effectively the second pyrolysis of oil gas, and then improve the yield of pyrolysis oil, good in economic efficiency.
According to embodiment of the present utility model, 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 be that oil gas derives pipe diameter d 1/2-3 times.Thus can derive the pyrolysis oil gas of generation at once
Mixture, it is to avoid pyrolysis oil cracks, improves pyrolysis oil productivity.
According to embodiment of the present utility model, cyclone separator 180 has gas-solid mixture entrance 181, gas outlet 182
With solid outlet 183, wherein, gas outlet 182 is connected with gas mixture outlet 120, the end of gas gathering manifold 150
End extends the gas-solid mixture entrance 181 being communicated to this cyclone separator 180.Inventor finds, by reacting in pyrolysis of coal
Cyclone separator is set inside device, thermal decomposition product is carried out gas solid separation process, it is possible to effectively reduce and discharge pyrolysis of coal reactor
The dustiness of gas mixture, effectively the produce coal pyrolysis oil gas of pyrolysis reactor of suppression mixes dust condensation blocking subsequent pipeline
And relevant device；Meanwhile, in cyclone separator built-in pyrolysis of coal reactor, pyrolysis reactor can be reduced cold to gas mixture
The lagging facility of pipeline between solidifying device, reduces the thermal insulation area of equipment and reduces system heat tracing energy consumption.
According to embodiment of the present utility model, the outer wall of cyclone separator 180 and the heat accumulation type radiant tube 170 that is adjacent it
Between be welded with support bar 181, it is possible to be firmly fixed to inside pyrolysis reactor this cyclone separator.Generally, rotation
Wind separator 180 is arranged at the top of pyrolysis reactor 100, therefore, it can at cyclone separator 180 outer wall and ground floor
Support bar 181 is welded between heat accumulation type radiant tube 170.
According to embodiment of the present utility model, pyrolysis of coal reactor 100 is additionally provided with heat accumulation type radiant tube burning simultaneously required
Fuel, air and burning after smoke entrance (not shown), fuel gas inlet and air intake respectively with heat accumulating type spoke
Penetrate pipe 170 to be 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 to be done
Dry and the pre-heat treatment, thus further increases pyrolysis of coal reactor efficiency and efficiency of combustion, and achieves comprehensive utilization resource,
Reduce the purpose of energy consumption.
According to embodiment of the present utility model, 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
Degree can be 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
The height of reactor 100 and width are not limited to above-mentioned scope, and those skilled in the art can select the most flexibly.
According to embodiment of the present utility model, pulverized-coal fired boiler 200 has oil burner 210 and coal-char combustion device 220,
Semicoke outlet 120 is connected with the entrance 221 on coal-char combustion device 220, and pulverized-coal fired boiler 200 is suitable to mix coal and semicoke
Combination burning generates electricity.Inventor finds, by the hot semicoke directly heat produced in pyrolysis of coal reactor 100 being delivered to and coal dust pot
Stove 200 and coal mixed combustion, can not only guarantee the combustion stability of pulverized-coal fired boiler 200, and can significantly improve energy
Utilization rate, and when utilizing this pyrolysis of coal reactor-pulverized-coal fired boiler combined system to be able to ensure that electricity generation system when carrying out combustion power generation
Stability.
According to embodiment of the present utility model, with reference to Fig. 4, pyrolysis of coal reactor-pulverized-coal fired boiler combined system can wrap further
Including: fuel pulverizing plant 300, this fuel pulverizing plant 300 has semicoke entrance 310, feed coal entrance 320 and mixed material outlet
330, wherein, the semicoke of semicoke entrance 310 and pyrolysis of coal reactor 100 exports 120 and is connected, mixed material outlet 330 and
The entrance 221 of coal-char combustion device 220 is connected.Thus, can be by the particle diameter of feed coal and semicoke by fuel pulverizing plant 300
Manage to the requirement meeting pulverized-coal fired boiler, be conducive to fully burning in pulverized-coal fired boiler.
According to embodiment of the present utility model, with reference to Fig. 5 and Fig. 6, this pyrolysis of coal reactor-pulverized-coal fired boiler combined system is permissible
Farther include: gas mixture after-treatment device 400, this gas mixture after-treatment device 400 and pyrolysis of coal reactor
The gas mixture outlet 130 of 100 is connected.Specifically, gas mixture after-treatment device 400 may include that oil gas divides
From assembly 410, pyrolysis gas purification assembly 420 and tar refining assembly 430.It is right that gas mixture after-treatment device 400 is suitable to
The gas mixture that pyrolysis obtains carries out post processing, carries out Oil-gas Separation, pyrolysis gas purification and tar refining etc. successively and processes,
To obtain purified gas and high added value oil product.
According to embodiment of the present utility model, Oil-gas Separation assembly 410 has gas mixture import 411, pyrolysis gas outlet
412 and tar outlet 413, gas mixture import 411 exports 130 with the gas mixture of pyrolysis of coal reactor and is connected, Jiao
Oil export 413 is connected with the tar entrance 431 of tar refining assembly 430, and this Oil-gas Separation assembly 410 is suitable to antipyretic
The gas mixture produced separates and obtains pyrolysis gas and tar, and Oil-gas Separation assembly 410 carries out the concrete mode of Oil-gas Separation not
It is particularly limited, it may for example comprise but it is not limited to condensation, spray etc..
According to embodiment of the present utility model, 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 embodiment of the present utility model, tar refining assembly 430 has 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 enters
Row refinement treatment, to obtain high added value oil product, such as, includes but not limited to that the tar to isolated carries out hydrofinishing.
Pyrolysis of coal reactor-pulverized-coal fired boiler combined system of the present utility model arranges coal plug technique, efficient solution for pulverized-coal fired boiler
The problem that coal plug leading portion pyrolytic process of having determined is complicated, in combined system of the present utility model, pyrolysis of coal reactor can be with existing
Pulverized-coal fired boiler be directly combined, send hot semicoke by First air, it is not necessary to existing pulverized-coal fired boiler is transformed, with existing
System associated with pyrolysis of coal plug technique-recirculating fluidized bed generating set is compared, pyrolysis of coal reactor-coal dust pot of the present utility model
In stove combined system, pyrolysis of coal reactor and pulverized-coal fired boiler 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.It is of the present utility model that pyrolysis of coal reactor-pulverized-coal fired boiler combined system can
To be effective to produce combustible gas and pyrolysis oil co-production electric power, and utilize the induction system of existing pulverized-coal fired boiler, it is achieved semicoke
Heat delivers to pulverized-coal fired boiler, and retains the combustion system of original pulverized-coal fired boiler, it is achieved mixing of the coal in pyrolysis char and pulverized-coal fired boiler
Burn, ensure the stability of coal powder boiler combustion, pyrolysis gas and pyrolytic tar are processed simultaneously, produce combustible gas and refine
Tar is as note product, it is achieved the economic benefit of coal plug.When pyrolysis of coal reactor of the present utility model-pulverized-coal fired boiler combination is
When system is used for generating electricity, it can be ensured that the stability of electricity generation system.Special needs to be pointed out is, pyrolysis of coal inside reactor is arranged
There is cyclone separator, the temperature of pyrolysis of coal gas mixture can be reduced, reduce the air-fuel mixture of the pyrolysis reactor that produces coal simultaneously
The dustiness of thing, reduces the dust content in subsequent high temperature coal pyrolysis gas Quench tar, and the possibility of tar condensing blocking pipeline,
Reduce whirlwind insulation cost simultaneously.
In another aspect of the present utility model, this utility model provides one and utilizes foregoing pyrolysis of coal reactor-coal dust
Boiler combined system processes the method for coal.According to embodiment of the present utility model, with reference to Fig. 7, 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 embodiment of the present utility model, the particle diameter supplying the coal to pyrolysis of coal reactor can be less than 3 millimeters, thus,
Pyrolysis material is heated evenly in pyrolysis reactor, and pyrolytic reaction efficiency is higher, and pyrolytic tar yield is higher.
According to specific embodiment of the utility model, the temperature on pyrolysis reactor top is 680-730 degree Celsius, the temperature at middle part
Degree is for 500-650 degree Celsius, and the temperature of bottom is 500-600 degree Celsius.Specifically, pyrolysis material in pyrolysis reactor by
Up to lower motion, sequentially passes through drying and dehydrating district, top, pyrolysis reaction region, middle part and semicoke maturation zone, bottom, at drying and dehydrating
Moisture quickly sloughed by district's pyrolysis material, then carries out pyrolytic reaction in pyrolysis reaction region, obtains gas mixture and semicoke, oil gas
Mixture is derived pipeline by oil gas and is quickly derived, and collects through gas-collecting branch pipe, gas gathering manifold and supply to the second cyclonic separation
Device, discharges pyrolysis reactor after removing dust, the semicoke obtained continues to move downwardly into semicoke maturation zone, then passes through semicoke
Pyrolysis of coal reactor is discharged in outlet.
S200: semicoke is delivered to described pulverized-coal fired boiler, makes semicoke carry out mixing powder process combustion power generation with coal.
According to embodiment of the present utility model, after step sloo, before step S200, the method for this process coal is permissible
Farther include: semicoke and coal are carried out powder process process and is not more than 200 microns to particle diameter.Specifically, in this step, will
The pyrolysis high-temperature semi-coke of 400-600 degree Celsius is discharged from semicoke outlet, enters fuel pulverizing plant together with generating feed coal, prepared
Mixture granularity is about 200 microns, delivers to the coal-char combustion device of pulverized-coal fired boiler through First air, carries 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 embodiment of the present utility model, with reference to Fig. 8, step S300 may further include following steps: S310: will
Gas mixture carries out Oil-gas Separation process, obtains tar and pyrolysis gas；S320: pyrolysis gas is carried out purified treatment, obtains
Combustible gas；And S330: tar is carried out refinement treatment, obtains oil product.Thus, it is possible to effectively thermal decomposition product is entered
The post processing that row is suitable, 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 pulverized-coal fired boiler, and nothing
Need to transform existing pulverized-coal fired boiler, pyrolysis of coal reactor and pulverized-coal fired boiler can run relatively independently, and the two is mutual
Disturb relatively small.The method can be effective to produce combustible gas and pyrolysis oil co-production electric power, and utilizes existing coal dust pot
The induction system of stove, it is achieved semicoke heat is sent, ensures the burning of semicoke, and reduces coal plug process costs.And, the method
In, the gas mixture that pyrolysis of coal produces, before discharging pyrolysis of coal reactor, carries out dedusting through cyclone separator, permissible
Greatly reduce pyrolysis of coal reactor to the lagging facility of pipeline between pyrolysis oil gas mixture rapid condensation device, reduce equipment
Thermal insulation area and reduction system heat tracing energy consumption, greatly reduce the possibility of tar condensing blocking pipeline simultaneously.
Referring to Fig. 6 and Fig. 8, describe pyrolysis of coal of the present utility model reactor-pulverized-coal fired boiler combined system and profit in detail
It is described by the duty of its method processing coal.
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, be then collected to gas gathering manifold
150, and be supplied to cyclone separator 180 carry out gas solid separation process by gas-solid mixture entrance 181, consolidating of isolated
Body is discharged through solid outlet 183, enters in pyrolysis of coal reactor 100, the gas mixture of isolated through gas outlet 182,
Gas mixture outlet 130 is also entered carried out Oil-gas Separation in Oil-gas Separation assembly 410 by gas mixture entrance 411
Processing, the pyrolysis gas of isolated is discharged through pyrolysis gas outlet 412, then enters pyrolysis gas through pyrolysis gas import 421 and purifies
Assembly 420, in pyrolysis gas purification assembly 420, pyrolysis gas carries out the operation such as desulfurization, deamination and carries out purified treatment, obtains
Purified gas part through combustible gas outlet 422 discharge, obtain combustible gas product, a part can be exported by another combustible gas
422 supply the heat accumulation type radiant tube to pyrolysis of coal reactor, separate in combustion heating, Oil-gas Separation assembly 410
To tar enter tar refining assembly 430 through tar outlet 413 and tar import 431 successively, at tar refining assembly 430
In tar is carried out hydrotreating, the high added value oil product obtained through oil product outlet 432 discharge.On the other hand, pyrolysis produces
Semicoke through semicoke outlet 120 discharge pyrolysis of coal reactors 100, then enter fuel pulverizing plant 300 through semicoke entrance 310, with
Time through feed coal entrance 320 base feed coal in fuel pulverizing plant 300, by semicoke and feed coal in fuel pulverizing plant 300
Reason is not more than 200 microns to particle diameter, entering of the most blended material outlet of mixture 330 that then obtains and coal-char combustion device
Mouth 221 enters coal-char combustion devices 220, and in coal-char combustion device 220, semicoke and coal carry out mixing burning generating.
Embodiment
Pyrolyzing coal is crushed to below particle diameter 3mm, sends into pyrolysis of coal of the present utility model reactor-pulverized-coal fired boiler combined system
In process, obtain purified gas and high-quality oil product.Pyrolysis of coal of the present utility model is reacted by concrete steps with reference to above-mentioned
Device-pulverized-coal fired boiler combined system and utilize it to process the description of duty of the method for coal.Wherein, pyrolysis gas forms such as following table
Shown in, the pyrolysis char temperature of generation is 515 DEG C, by with generating coal mixed scale powder system, obtain the coal of 200 microns
Powder is sent directly into coal powder boiler combustion generating.
Compared with the situation of generating feed coal all with the fuel of pulverized-coal fired boiler, the pyrolysis half discharged from pyrolysis of coal reactor
When Jiao accounts for the 50% of pulverized-coal fired boiler fuel gross weight, whole system energy utilization efficiency improves 3.7%, purified gas and
The income of coal tar is converted in cost of electricity-generating, and cost of electricity-generating reduces about 5.87%.
In description of the present utility model, term " first ", " second " are only used for describing purpose, and it is not intended that indicate or dark
Show relative importance or the implicit quantity indicating indicated technical characteristic.Thus, " first ", the spy of " second " are defined
Levy and can express or implicitly include one or more this feature.In description of the present utility model, " multiple " contain
Justice is 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 of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be
Any one or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, this area
Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out
In conjunction with and combination.
Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as restriction of the present utility model, those of ordinary skill in the art can in the range of this utility model
Above-described embodiment be changed, revise, to replace and modification.
Claims (10)
1. pyrolysis of coal reactor-pulverized-coal fired boiler combined system, it is characterised in that including:
Pyrolysis of coal reactor, described pyrolysis of coal reactor has coal entrance, semicoke outlet and gas mixture and exports, wherein,
Described coal entrance is arranged at the top of described pyrolysis of coal reactor, and the outlet of described gas mixture is arranged at described pyrolysis of coal reaction
On the roof of device and/or sidewall, 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, gas gathering manifold, many gas-collecting branch pipes, heat accumulating type radiation
Pipe and cyclone separator,
Wherein, described gas gathering manifold is adjacent to the internal perisporium 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, and the other end is communicated to described oil gas and derives pipeline；
Described cyclone separator has gas-solid mixture entrance, gas outlet and a solid outlet, wherein, described gas outlet with
The outlet of described gas mixture is connected, and one end of described gas gathering manifold extends the gas-solid mixing being communicated to described cyclone separator
Thing entrance；
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；
Pulverized-coal fired boiler, described pulverized-coal fired boiler is provided with oil burner and coal-char combustion device, the entrance of described coal-char combustion device
It is connected with the outlet of described semicoke.
Pyrolysis of coal reactor-pulverized-coal fired boiler combined system the most according to claim 1, it is characterised in that described in every layer
Heat accumulation type radiant tube includes multiple parallel and equally distributed heat accumulation type radiant tube, and each described heat accumulation type radiant tube and phase
Each heat accumulation type radiant tube in adjacent two-layer heat accumulation type radiant tube up and down is parallel and height side along described pyrolysis of coal reactor
Upwards it is in staggered distribution.
Pyrolysis of coal reactor-pulverized-coal fired boiler combined system the most according to claim 1, it is characterised in that described gas collection
Arm 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.
Pyrolysis of coal reactor-pulverized-coal fired boiler combined system the most according to claim 1, it is characterised in that described oil gas
Derive pipeline along the short transverse multi-tier arrangement of described pyrolysis reactor, every layer have much the most parallel to each other
Oil gas 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-pulverized-coal fired boiler combined system the most according to claim 1, it is characterised in that described oil gas
Derive pipeline to be 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 symmetrically arranged with
Two oil gas 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-pulverized-coal fired boiler combined system the most according to claim 1, it is characterised in that described oil gas
Derive and be provided with multiple through hole on the tube wall of pipeline,
Optionally, the plurality of through hole is uniformly distributed on the length direction that described oil gas derives pipeline.
Pyrolysis of coal reactor-pulverized-coal fired boiler combined system the most according to claim 1, it is characterised in that described whirlwind
It is welded with support bar between outer wall and the described heat accumulation type radiant tube being adjacent of separator.
Pyrolysis of coal reactor-pulverized-coal fired boiler combined system the most according to claim 1, it is characterised in that wrap further
Include:
Fuel pulverizing plant, described fuel pulverizing plant has semicoke entrance, feed coal entrance and mixed material outlet, described semicoke entrance
Being connected with the outlet of described semicoke, the outlet of described mixed material is connected with the entrance of described coal-char combustion device.
Pyrolysis of coal reactor-pulverized-coal fired boiler combined system the most according to claim 1, it is characterised in that wrap further
Include:
Gas mixture after-treatment device, described gas mixture after-treatment device is connected with the outlet of described gas mixture.
Pyrolysis of coal reactor-pulverized-coal fired boiler combined system the most according to claim 9, 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 be connected with the outlet of described gas mixture；
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.
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| CN201620271558.8U CN205653403U (en) | 2016-04-01 | 2016-04-01 | Coal pyrolytic reaction ware - pulverized coal boiler combined system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754620A (en) * | 2016-04-01 | 2016-07-13 | 北京神雾环境能源科技集团股份有限公司 | Coal pyrolysis reactor-pulverized coal fired boiler combined system and method for treating coal by utilizing same |
| CN109385308A (en) * | 2018-11-28 | 2019-02-26 | 浙江工业大学 | A kind of the double bed electricity generation system and method for coal-fired coupling domestic garbage pyrolysis |
-
2016
- 2016-04-01 CN CN201620271558.8U patent/CN205653403U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754620A (en) * | 2016-04-01 | 2016-07-13 | 北京神雾环境能源科技集团股份有限公司 | Coal pyrolysis reactor-pulverized coal fired boiler combined system and method for treating coal by utilizing same |
| CN105754620B (en) * | 2016-04-01 | 2018-08-07 | 北京神雾电力科技有限公司 | Pyrolysis of coal reactor-pulverized-coal fired boiler combined system and the method for handling coal using it |
| CN109385308A (en) * | 2018-11-28 | 2019-02-26 | 浙江工业大学 | A kind of the double bed electricity generation system and method for coal-fired coupling domestic garbage pyrolysis |
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