CN105885895A - Coal pyrolysis reactor and pulverized coal boiler combined system and method for treating coal - Google Patents
Coal pyrolysis reactor and pulverized coal boiler combined system and method for treating coal Download PDFInfo
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- CN105885895A CN105885895A CN201610431142.2A CN201610431142A CN105885895A CN 105885895 A CN105885895 A CN 105885895A CN 201610431142 A CN201610431142 A CN 201610431142A CN 105885895 A CN105885895 A CN 105885895A
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- 239000003245 coal Substances 0.000 title claims abstract description 190
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 187
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002245 particle Substances 0.000 claims abstract description 7
- 239000002817 coal dust Substances 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 238000007670 refining Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 230000026676 system process Effects 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 7
- 239000000571 coke Substances 0.000 abstract description 5
- 238000010298 pulverizing process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 100
- 239000003921 oil Substances 0.000 description 59
- 238000009825 accumulation Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009615 deamination Effects 0.000 description 1
- 238000006481 deamination reaction Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Industrial Gases (AREA)
Abstract
The invention discloses a coal pyrolysis reactor and pulverized coal boiler combined system and a method for treating coal. The coal pyrolysis reactor and pulverized coal boiler combined system comprises a coal pyrolysis reactor, a pulverizing system and a pulverized coal boiler. A semi-coke outlet of the coal pyrolysis reactor is connected with a semi-coke inlet of the pulverizing system; a pulverized coal outlet of the pulverizing system is connected with a pulverized coal inlet of the pulverized coal boiler. The coal pyrolysis reactor and pulverized coal boiler combined system and the method have the advantages that particle movable beds for removing dust are arranged inside the upper portion of a reactor body, pyrolysis oil gas can flow through the particle movable beds, accordingly, the dust content of pyrolysis gas can be effectively reduced, and the follow-up tar pretreatment cost can be lowered; the temperature of the coal pyrolysis oil gas can be reduced by the aid of dust removal systems, partial tar can be condensed, and the heavy tar yield can be reduced; generated pyrolysis semi-coke and raw coal are fed into the pulverizing system together to manufacture pulverized coal, the pulverized coal is conveyed to the pulverized coal boiler to be combusted, and accordingly the power generation efficiency can be improved.
Description
Technical field
The invention belongs to coal sublevel cascade utilization technical field, particularly relate to for jet coal, brown coal
A kind of pyrolysis of coal reactor of low order fine coal and pulverized-coal fired boiler combined system and the method for process coal in Deng.
Background technology
Along with liquid fuel, gaseous fuel and industrial chemicals progressively the carrying of proportion in total energy consumption
Height, converts with the chemical industry of coal and ensures that in critical energy field, the energy development route of the degree of self-sufficiency achieves
The most progressive.Pyrolysis of coal is the weak endothermic reaction of class, and the energy expenditure of reaction itself just corresponds to former
The 3-5% of material calorific value.In anoxybiotic working condition, the increase of temperature will cause the macromole of coal progressively to solve
Structure, by hydrogen migration, dehydrogenation and condensation reaction, aromatic core Step Condensation, from mononuclear aromatics-condensed ring virtue
Hydrocarbon-polycyclic aromatic hydrocarbon-semicoke, until coke.The pyrolytic process of coal can generally form combustible gas, Jiao
The three class output objects such as oil and semicoke (or coke).
The semicoke produced after pyrolysis of coal can be as fuel combustion.Existing system be all take more complicated
Solid or gas as the pyrolysis of coal plug technique of heat carrier.Such as existing a kind of furnace front coal head-drawing side
Method, the heat that this process themiolysis system takes combustion system is grey as carrier, relates to the burning of carrier
And fluidisation, technique is cumbersome, system complex, and cost is high.At present using semicoke as the technique of heat carrier
In, technological process include semicoke heating, promote, separate, the technique such as mixing, cause system flow
Increase, substantially increase system failure rate.
The pyrolysis oil gas that pyrolysis of coal produces, complicated component, heavy tar components are many, dust content is big,
Dust is in irregular shape, needs the follow-up pyrolysis oil gas processing system just available combustible gas arranging complexity
With high-quality tar.In pyrolytic process, dedusting technology has become low-order coal pyrolysis course of industrialization and has been badly in need of solution
One of problem certainly.
Summary of the invention
In order to solve the problems referred to above, the present invention provides a kind of pyrolysis of coal reactor to be combined system with pulverized-coal fired boiler
System and the method processing coal, be provided with a kind of New type coal plug technique for pulverized-coal fired boiler, produces high attached
Value-added product, and utilize the induction system of existing pulverized-coal fired boiler, it is achieved semicoke heat is sent, and ensures semicoke
Burning, and reduce coal plug process costs.
Coal plug, it is intended to normal pressure, middle low temperature, without catalyst and hydrogen under conditions of, use mild pyrolysis
Mode extract the gas in coal, liquid fuel and fine chemicals, and technique desulphurization denitration whereby,
Thus realize oil, coal air and heat, the Poly-generation of electricity.
An object of the present invention provides a kind of pyrolysis of coal reactor and pulverized-coal fired boiler combined system, including:
Pyrolysis of coal reactor, pulverized coal preparation system, pulverized-coal fired boiler,
Described pyrolysis of coal reactor includes: reactor body and granular bed, described granular bed
Including: side panel, two wallboards being fixed on the sidewall of described reactor body and telescopic valve
Door, the most described side panel, said two wallboard and described sidewall surround the cavity of upper shed, described
Side panel is porous plate, and described valve is positioned at the bottom of described granular bed, consolidating of described wallboard
Determine to be provided with on the sidewall between position pyrolysis oil gas vent；
The semicoke outlet of described pyrolysis of coal reactor is connected with the semicoke entrance of described pulverized coal preparation system；
The discharge of described pulverized coal preparation system is connected with the coal powder entrance of described pulverized-coal fired boiler.
In the present invention, described valve is plate body, the sidewall between the fixed position of described wallboard it
Having elongated hole, described valve is telescopic is installed on described elongated hole.
In the present invention, described granular bed farther includes filter plate, and described filter plate is porous plate, institute
State filter plate to be arranged between said two wallboard and relative with described pyrolysis oil gas vent, thus in institute
State and limit air chamber between the sidewall between filter plate, said two wallboard and the fixed position of described wallboard.
When pyrolysis oil gas is entered air chamber by the cavity of granular bed, all participation work of filter plate, it is to avoid
Filter plate, because of the partial ventilation of only corresponding pyrolysis oil gas vent, uses that frequency is excessive causes this part to be distributed
Pore is blocked by tar too early and scraps, and extends the service life of filter plate, reduces shut-down and changes filter
The frequency of plate, improves production efficiency.
Another kind of scheme, described granular bed farther includes filter plate, and described filter plate is arranged on described
Pyrolysis oil gas outlet, described filter plate is porous plate.In general, the pyrolysis oil gas vent of reactor
With one section of pipe joint, convenient and transmission gas pipeline is connected, and the filter plate of the present invention is arranged on pyrolysis
In the pipe joint of oil gas vent, it is possible to reduce filter plate, the material consumption of dividing plate.
The pyrolysis of coal reactor of the present invention and pulverized-coal fired boiler combined system farther include pyrolysis oil gas disposal
System；
Described pyrolysis oil gas processing system is connected with the pyrolysis oil gas vent of described pyrolysis of coal reactor.
In the present invention, described pyrolysis oil gas processing system includes: Separate System of Water-jet, and pyrolysis gas purifies
System, tar refining system；
The pyrolysis oil gas vent of described pyrolysis of coal reactor is connected with described Separate System of Water-jet, described gas
The gas outlet of liquid separation system is connected with described pyrolysis gas cleaning system, described Separate System of Water-jet
Liquid outlet is connected with described tar refining system.
In the present invention, described pyrolysis gas cleaning system has and is connected to the flammable of described pyrolysis of coal reactor
Gas exports, and the part combustible gas that pyrolysis gas cleaning system produces, as fuel, provides energy for pyrolytic reaction
Amount.
It is a further object of the present invention to provide the above-mentioned pyrolysis of coal reactor of a kind of use to be combined with pulverized-coal fired boiler
System processes the method for coal, comprises the steps:
Raw material (low-order coal) after broken is joined pyrolysis of coal reactor, makes raw material occur pyrolysis anti-
Should, produce pyrolysis oil gas and pyrolysis char；
The described pyrolysis oil gas produced discharges described pyrolysis of coal after described granular bed dedusting, cooling
Reactor；
The described pyrolysis char of 400-600 DEG C is exported from the semicoke of described pyrolysis of coal reactor and discharges；
By discharging the described pyrolysis char outside described pyrolysis of coal reactor, send into powder process together with feed coal
System prepares coal dust, is burnt by the described coal dust described pulverized-coal fired boiler of feeding.
Before adding raw materials into pyrolysis of coal reactor, described raw material is crushed to below particle diameter 3mm.
The method of described process coal also includes the separating step being pyrolyzed oil gas: will discharge described pyrolysis of coal anti-
The described pyrolysis oil pneumatic transmission answering device enters oil and gas separating system, obtains pyrolysis gas and pyrolytic tar, by described
Pyrolysis gas is sent into described pyrolysis gas cleaning system and is obtained combustible gas, and described pyrolytic tar is sent into described Jiao
Oil refining system obtains high-quality tar.
The technical scheme is that beneficial effect:
The present invention uses heat accumulating type descending-bed reactor as pyrolysis of coal reactor.Reactor body top
Built-in granular bed dedusting, enters stove pyrolyzing coal and is partially into granular bed, pyrolysis oil gas through
Grain moving bed effectively reduces the dustiness in pyrolysis gas, reduces pyrolysis of coal by dust pelletizing system simultaneously
Oil gas temperature, makes part tar condensing, reduces follow-up tar pretreated cost, reduces heavy tar
Yield.Generation pyrolysis char enters pulverized coal preparation system together with feed coal and prepares coal dust, and coal dust is delivered to institute
State pulverized-coal fired boiler to burn, improve energy utilization rate.
For the ease of describing, in this article, term " coal fast pyrolysis reactor ", " heat accumulating type is descending
Bed reactor ", " pyrolysis oven " be used interchangeably.
Accompanying drawing explanation
Fig. 1 is the structural representation of pyrolysis of coal reactor of the present invention and pulverized-coal fired boiler combined system；
Fig. 2 is that the present invention uses pyrolysis of coal reactor to process the method stream of coal with pulverized-coal fired boiler combined system
Cheng Tu.
Detailed description of the invention
Below in conjunction with drawings and Examples, the detailed description of the invention of the present invention is carried out more detailed
Explanation, so as to the advantage being more fully understood that the solution of the present invention and various aspects thereof.But,
Specific embodiments described below and embodiment are only descriptive purposes rather than to the present invention
Limit.
The embodiment of the invention discloses pyrolysis of coal reactor and pulverized-coal fired boiler combined system, be used for processing low
Rank coal.As it is shown in figure 1, system includes pyrolysis of coal reactor 100, pulverized coal preparation system 200, pulverized-coal fired boiler
300 and pyrolysis oil gas processing system 400.Raw material (low-order coal) occurs in pyrolysis of coal reactor 100
Pyrolytic reaction, produces pyrolysis char and pyrolysis oil gas.Pyrolysis char enters described system together with feed coal
Powder system 200 prepares coal dust, described coal dust is delivered to described pulverized-coal fired boiler 300 to burn.Heat
Solution oil gas entrance pyrolysis oil gas processing system 400 carries out subsequent treatment and obtains combustible gas and tar.
Pyrolysis of coal reactor 100 is heat accumulating type descending-bed reactor, including: reactor body, accumulation of heat
Formula radial canal, granular bed.
Reactor body is pyrolytic reaction container.Feed(raw material)inlet is offered at the top of pyrolytic reaction container,
Pyrolysis oil gas vent it is provided with on sidewall.
Heat accumulation type radiant tube is arranged in reactor body, and heat accumulation type radiant tube is along the height of reactor body
Degree direction multi-tier arrangement, arranges many heat accumulation type radiant tubes the most parallel to each other for every layer.By
In using multilamellar heat accumulation type radiant tube heat supply, response system simple in construction, easy to operate, heats
Good, uniformity of temperature profile.Every layer of heat accumulation type radiant tube is mutual with adjacent bilevel heat accumulation type radiant tube
Parallel and along reactor body short transverse is interspersed.Thus, it is remarkably improved reactor
Pyrolysis efficiency, thus improve the output capacity of product.
Granular bed is fixed on the sidewall of pyrolytic reaction vessel, and is covered by pyrolysis oil gas vent,
Of the present invention cover, refer to that pyrolysis oil gas vent is isolated with reactor inner chamber by granular bed.
Pyrolysis oil gas is after granular bed dedusting, pyrolysis oil gas vent this is external to discharge reaction vessel.
Granular bed is arranged on the sidewall of reactor body.In the present embodiment, granular bed
Including wallboard, side panel, filter plate and valve.
Two wallboards are separately fixed on the sidewall of reactor body.For convenience of explanation, refer in particular to be positioned at
The sidewall between the fixed position of sidewall of two wallboards is referred to as " partial sidewall ".Pyrolysis oil gas goes out
Mouth is arranged in this " partial sidewall ", is i.e. provided with heat on the sidewall between the fixed position of wallboard
Solve oil gas vent.
Side panel is fixed in the middle of two wallboards.Two wallboards, side panel and the part of reactor body
Sidewall is the cylindrical body of both ends open, around the cavity defining granular bed.This cavity is opened up and down
Put, form the passage that raw material falls.In other words, the top of granular bed is open upper shed,
As particle entrance.The bottom of granular bed is provided with telescopic valve, by controlling valve
Aperture, control discharging speed.
Valve is a plate body, and the correct position under " partial sidewall " of previous reaction device body sets
Putting elongated hole, valve is telescopic to be installed in elongated hole.Valve is drawn in direction outside reactor body, can
Accelerate the raw material falling speed in granular bed cavity；Direction in reactor body pushes away valve,
The raw material falling speed in granular bed cavity can be slowed down.Operator can be carried out according to producing needs
Autonomous operation.
Side panel is porous plate, and side panel aperture is 0～0.05mm, and the density in hole is that area hole count is many
In 500～5000/cm2.Pyrolysis oil gas is in side panel enters the cavity of granular bed, in it
Raw material filter after discharged outside reactor body by pyrolysis oil gas vent.
Granular bed farther includes filter plate, filter plate arrange between two wallboards and with pyrolysis oil gas
Relatively, filter plate is by the cavity isolation of pyrolysis oil gas vent with granular bed in outlet.Filter plate is porous plate,
The aperture of filter plate is 0～0.1mm, and the density in hole is that area hole count is no less than 50～5000/cm2.Heat
Solve oil gas and pass through filter plate, pyrolysis oil gas vent discharge reactor body external.
The sidewall spacers of filter plate and reactor body is arranged, filter plate, two wallboards and sidewall surround gas
Room.So, when pyrolysis oil gas is entered air chamber by the cavity of granular bed, all participations of filter plate
Work, it is to avoid filter plate is because of the partial ventilation of only corresponding pyrolysis oil gas vent, and frequency is excessive causes this in use
The pore of part distribution is blocked by tar too early and scraps, and extends the service life of filter plate, reduces
Stop work and change the frequency of filter plate, improve production efficiency.
Filter plate also has another set-up mode: filter plate is arranged on pyrolysis oil gas outlet, by pyrolysis oil
Gas outlet is isolated with granular bed.In general, the pyrolysis oil gas vent of reactor is with one section of pipe
Joint, convenient and transmission gas pipeline is connected, and the filter plate of the present invention is arranged on pyrolysis oil gas vent
In pipe joint, it is possible to reduce filter plate, the material consumption of dividing plate.
Pulverized coal preparation system 200 is for pulverizing as coal dust by semicoke and feed coal, in order to coal powder boiler combustion.
The semicoke entrance of pulverized coal preparation system 200 exports with the semicoke of pyrolysis of coal reactor and is connected.Pulverized coal preparation system 200
Also include that feed coal entrance and discharge, discharge are connected with pulverized-coal fired boiler coal powder entrance.Pyrolysis
Semicoke enters pulverized coal preparation system 200 by the semicoke entrance of pulverized coal preparation system, and feed coal is entered by feed coal entrance
Enter pulverized coal preparation system 200.Pyrolysis char is crushed into coal dust together with feed coal, and coal dust is arranged through discharge
Go out.
Pulverized-coal fired boiler 300 enters pulverized-coal fired boiler as the burner of coal dust, coal dust through coal powder entrance.Coal
Powder boiler 300 retains original coal combustion systems, it is not necessary to transform.Combusting coal fines can have multiple use
On the way, as being used for generating electricity.
Present invention additionally comprises pyrolysis oil gas processing system 400, at the pyrolysis oil gas produce pyrolysis oven
Reason.Pyrolysis oil gas processing system 400 includes Separate System of Water-jet 401, pyrolysis gas cleaning system 402 and
Tar refining system 403.Pyrolysis oil gas processing system 400 and the pyrolysis of described pyrolysis of coal reactor 100
Oil gas vent connects.
Separate System of Water-jet 401, for being gas and liquid by pyrolysis Oil-gas Separation, is provided with gas and goes out
Mouth and liquid outlet.Separate System of Water-jet 401 connects with the pyrolysis oil gas vent of pyrolysis of coal reactor 100
Connecing, gas outlet is connected with pyrolysis gas cleaning system 402, liquid outlet and tar refining system 403
Connect.
The gas that Separate System of Water-jet 401 separates enters pyrolysis gas cleaning system 402 through gas outlet, by
Pyrolysis gas cleaning system 402 produces combustible gas after processing.Pyrolysis gas cleaning system 402 has and is connected to
The combustible gas outlet of described pyrolysis of coal reactor 100.It is flammable that pyrolysis gas cleaning system 402 produces part
Pneumatic transmission burns to pyrolysis of coal reactor, provides heat energy for pyrolytic reaction, it is achieved that energy needed for system
Partly self-supporting.
The liquid that Separate System of Water-jet 4010 separates enters tar refining system through liquid outlet, through tar
Refining system 403 processes and obtains high-quality tar.
As in figure 2 it is shown, the present invention uses above-mentioned pyrolysis of coal reactor to process with pulverized-coal fired boiler combined system
The method of coal comprises the steps:
1, raw material is crushed to below particle diameter 3mm.
2, the raw material after crushing adds in pyrolysis of coal reactor, makes raw material generation pyrolytic reaction, pyrolysis
Reaction produces pyrolysis oil gas and pyrolysis char.
3, the pyrolysis oil gas produced is produced coal pyrolysis reactor by granular bed dedusting, heel row of lowering the temperature.
4, the pyrolysis char of 400-600 DEG C is exported from the semicoke of pyrolysis of coal reactor discharge, and with former
Material coal enters pulverized coal preparation system together, and prepared coal powder size is about 200um, and coal dust is delivered to coal dust pot
Stove is to burn.The pyrolysis oil pneumatic transmission discharging pyrolysis of coal reactor is entered Separate System of Water-jet, obtains
Pyrolysis gas and pyrolytic tar.Pyrolysis gas is sent into pyrolysis gas cleaning system, by the work such as desulfurization, deamination
Sequence obtains combustible gas, and pyrolytic tar sends into tar refining system, and hydrogenated to be refining to obtain high-quality burnt
Oil.
The present invention uses heat accumulating type descending-bed reactor as pyrolysis of coal reactor.Reactor body top
Built-in granular bed dedusting, enters stove pyrolyzing coal and is partially into granular bed, pyrolysis oil gas through
Grain moving bed effectively reduces the dustiness in pyrolysis gas, reduces follow-up tar pretreated cost, with
Time reduce pyrolysis of coal oil gas temperature by dust pelletizing system, make part tar condensing, reduce heavy tar
Yield.Generation pyrolysis char enters pulverized coal preparation system together with feed coal and prepares coal dust, and coal dust is delivered to institute
State pulverized-coal fired boiler to burn, improve generating efficiency.
Embodiment
Indonesia's brown coal are crushed to below particle diameter 3mm, send into pyrolysis of coal reactor and pulverized-coal fired boiler
The pyrolysis of coal reactor of combined system, pyrolysis of coal reactor is provided with Multi-layer warming radial canal and grain bed
Moving bed.The pyrolysis oil gas that pyrolysis of coal reactor produces is through Separate System of Water-jet, pyrolysis gas cleaning system
After tar refining system, obtain combustible gas and high-quality tar.In combustible gas, composition is such as table 1 below institute
Show.Produce pyrolysis char temperature be 505 DEG C, by with generating feed coal mixed scale powder system,
200um coal dust is sent directly into coal powder boiler combustion generating.Table 2 is this system projects productivity.
Composition in table 1 combustible gas
Table 2 projects productivity
| Project | Combustible gas | Pyrolytic tar | Semicoke |
| Productivity/% | 15.42 | 9.08 | 65.78 |
Compared with the situation of generating feed coal all with the fuel of pulverized-coal fired boiler, arrange from pyrolysis of coal reactor
When the pyrolysis char gone out accounts for the 50% of pulverized-coal fired boiler fuel gross weight, whole system energy utilization efficiency carries
High by 3.9%, the income of combustible gas and tar to be converted in cost of electricity-generating, cost of electricity-generating reduces about
5.1%, tar pretreated cost declines 6.2%.
It should be noted that each embodiment above by reference to described by accompanying drawing is only in order to illustrate the present invention
And unrestricted the scope of the present invention, it will be understood by those within the art that, without departing from this
The amendment on the premise of bright spirit and scope carried out the present invention or equivalent, all should contain
Within the scope of the present invention.Additionally, unless the context outside indication, the word bag occurred in the singular
Including plural form, vice versa.It addition, unless stated otherwise, then any embodiment whole or
A part can use in conjunction with all or part of of any other embodiments.
Claims (10)
1. pyrolysis of coal reactor and a pulverized-coal fired boiler combined system, including: pyrolysis of coal reactor, system
Powder system, pulverized-coal fired boiler, it is characterised in that
Described pyrolysis of coal reactor includes: reactor body and granular bed, described granular bed
Including: side panel, two wallboards being fixed on the sidewall of described reactor body and telescopic valve
Door, the most described side panel, said two wallboard and described sidewall surround the cavity of upper shed, described
Side panel is porous plate, and described valve is positioned at the bottom of described granular bed, consolidating of described wallboard
Determine to be provided with on the sidewall between position pyrolysis oil gas vent；
The semicoke outlet of described pyrolysis of coal reactor is connected with the semicoke entrance of described pulverized coal preparation system；
The discharge of described pulverized coal preparation system is connected with the coal powder entrance of described pulverized-coal fired boiler.
Pyrolysis of coal reactor the most according to claim 1 and pulverized-coal fired boiler combined system, its feature
Being, described valve is plate body, the sidewall between the fixed position of described wallboard have length
Hole, described valve is telescopic is installed on described elongated hole.
Pyrolysis of coal reactor the most according to claim 1 and pulverized-coal fired boiler combined system, its feature
Being, described granular bed farther includes filter plate, described filter plate be arranged in said two wallboard it
Between and relative with described pyrolysis oil gas vent, thus at described filter plate, said two wallboard and described
Limiting air chamber between sidewall between the fixed position of wallboard, described filter plate is porous plate.
Pyrolysis of coal reactor the most according to claim 1 and pulverized-coal fired boiler combined system, its feature
Being, described granular bed farther includes filter plate, and described filter plate is arranged on described pyrolysis oil gas and goes out
At Kou, described filter plate is porous plate.
Pyrolysis of coal reactor the most according to claim 1 and pulverized-coal fired boiler combined system, its feature
Being, described system farther includes pyrolysis oil gas processing system；
Described pyrolysis oil gas processing system is connected with the pyrolysis oil gas vent of described pyrolysis of coal reactor.
Pyrolysis of coal reactor the most according to claim 5 and pulverized-coal fired boiler combined system, its feature
Being, described pyrolysis oil gas processing system includes: Separate System of Water-jet, pyrolysis gas cleaning system, burnt
Oil refining system；
The pyrolysis oil gas vent of described pyrolysis of coal reactor is connected with described Separate System of Water-jet, described gas
The gas outlet of liquid separation system is connected with described pyrolysis gas cleaning system, described Separate System of Water-jet
Liquid outlet is connected with described tar refining system.
Pyrolysis of coal reactor the most according to claim 6 and pulverized-coal fired boiler combined system, its feature
Being, described pyrolysis gas cleaning system has the combustible gas outlet being connected to described pyrolysis of coal reactor.
8. one kind uses the arbitrary described pyrolysis of coal reactor of claim 5 to 7 to be combined system with pulverized-coal fired boiler
System processes the method for coal, it is characterised in that comprise the steps:
Raw material after broken is joined pyrolysis of coal reactor, makes raw material generation pyrolytic reaction, produce heat
Solve oil gas and pyrolysis char；
The described pyrolysis oil gas produced discharges described pyrolysis of coal after described granular bed dedusting, cooling
Reactor；
The described pyrolysis char of 400-600 DEG C is exported from the semicoke of described pyrolysis of coal reactor and discharges；
By discharging the described pyrolysis char outside described pyrolysis of coal reactor, send into powder process together with feed coal
System prepares coal dust, is burnt by the described coal dust described pulverized-coal fired boiler of feeding.
The method processing coal the most according to claim 8, it is characterised in that further comprise the steps of:
Before adding raw materials into pyrolysis of coal reactor, described raw material is crushed to below particle diameter 3mm.
The method processing coal the most according to claim 8, it is characterised in that also include pyrolysis oil
The separating step of gas: the described pyrolysis oil pneumatic transmission discharging described pyrolysis of coal reactor is entered Oil-gas Separation system
System, obtains pyrolysis gas and pyrolytic tar, the described pyrolysis gas described pyrolysis gas cleaning system of feeding is obtained
Combustible gas, obtains high-quality tar by the described pyrolytic tar described tar refining system of feeding.
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