CN205501222U - System for handle low order coal - Google Patents
System for handle low order coal Download PDFInfo
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- CN205501222U CN205501222U CN201620226981.6U CN201620226981U CN205501222U CN 205501222 U CN205501222 U CN 205501222U CN 201620226981 U CN201620226981 U CN 201620226981U CN 205501222 U CN205501222 U CN 205501222U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a system for handle low order coal, include: grading plant, the hot -blast combined type sorting unit of lump coal, the hot -blast dense media sorting unit of fine coal, pyrolysis device, semicoke waste heat recovery device, powder coal drying unit and pulverized -coal gasification plant, the export of the last lump coal of grading plant is gone up the lump coal entry with the hot -blast combined type sorting unit of lump coal and is linked to each other, upward the clean coal export is continuous with the hot -blast combined type sorting unit of lump coal for the clean coal entry on the pyrolysis device, upward the fine coal export is continuous with grading plant for the fine coal entry on the hot -blast dense medium separation device of fine coal, semi -coke outlet linked to each other on semicoke waste heat recovery device went up semi -coke outlet and pyrolysis device, and semicoke waste heat recovery device goes up heat outlet and hot -blast combined type sorting unit of lump coal and the hot -blast dense media sorting unit of fine coal, and to go up hot -blast entry continuous, the clean coal export linked to each other on powder coal drying unit went up fine coal entry and the hot -blast dense medium separation device of fine coal, the last dry fine coal of pulverized -coal gasification plant entry is gone up the export of dry fine coal with powder coal drying unit and is linked to each other.
Description
Technical field
This utility model belongs to technical field of coal chemical industry, and specifically, this utility model relates to a kind of system processing low-order coal.
Background technology
Low-order coal is primarily referred to as the coal that cohesiveness is poor, degree of coalification is low, common are brown coal, peat, jet coal, weathered coal etc..
China's low-order coal aboundresources, accounts for China and has verified more than the 55% of coal total amount.
The main Land use systems of present stage low-order coal is direct combustion power generation, although this Land use systems is the most simple,
But cause the significant wastage of the energy, equipment etc..It addition, the thermal efficiency that low-order coal is directly burnt is low, and low-order coal burning
After can produce SOx, CO and NOx etc. air is caused severe contamination.Low-order coal upgrading processing will become low-order coal and efficiently open
Send out the key utilized.The upgrading processing of low-order coal include sorting, be dried, molding, be pyrolyzed, gasification etc., low-order coal deliming,
After dehydration, calorific value increases, and can reduce the corrosion of equipment during following process and reduce acid rain to environment after low-order coal desulfurization
Harm, low-order coal can expand it by upgrading processing and utilize scope.
Although the dirt in low-order coal can be removed by sorting, but during wet split, coal is fully contacted with water, makes
Becoming coal selecting product moisture to increase, reduce product caloric value, partial offset coal washing effect, also with the target phase of upgrading dehydration
Contradiction, and during the dry separation of room temperature, the surface moisture of coal makes the sticking probability between granule big, discharge refuse weak effect.
Individually it is dried and gasification technology improves the calorific value of low-order coal to a certain extent, but the dirts such as ash in upgraded coal, sulfur
Affect the quality of following process product, and the compound such as sulfur-bearing, nitrogen pollutes environment and equipment corrosion.
Therefore, the technology of existing process low-order coal is further improved.
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 purpose of type is to propose a kind of system processing low-order coal, and this system can solve existing combined type discharge refuse technology pair
The problem that low-order coal rate of discharging refuse is low, such that it is able to improve quality and the productivity of pyrolysis product in subsequent thermal solution preocess, and passes through
The waste heat recovery produced in pyrolytic process is used for discharge refuse process, energy cost can be significantly reduced, simultaneously by being entered by fine coal
Row gasification process obtains the gas that gasifies, and is possible not only to significantly improve raw material availability, and can improve Business Economic Benefit.
At an aspect of the present utility model, the utility model proposes a kind of system processing low-order coal.New according to this practicality
The embodiment of type, this system includes:
Breaker, described breaker has low-order coal entrance and break up coal outlet；
Grading plant, described grading plant has break up coal entrance, lump coal outlet and fine coal outlet；
Lump coal hot blast combined type sorting unit, described lump coal hot blast combined type sorting unit has lump coal entrance, the first hot blast enters
Mouth, the first spoil outlet, the first cleaned coal outlet and the first offgas outlet, described lump coal entrance is connected with the outlet of described lump coal；
Fine coal hot blast dense medium separation device, described fine coal hot blast dense medium separation device has fine coal entrance, the second hot blast enters
Mouth, solid dense media entrance, the second spoil outlet, the second cleaned coal outlet and the second offgas outlet, described fine coal entrance and institute
State fine coal outlet to be connected；
Pyrolysis installation, described pyrolysis installation has the first cleaned coal entrance, semicoke outlet and pyrolysis oil gas vent, described first essence
Coal entrance is connected with described first cleaned coal outlet；
Semicoke waste-heat recovery device, described semicoke waste-heat recovery device has semicoke entrance, cooling semicoke outlet and heat outlet,
Described semicoke entrance is connected with the outlet of described semicoke, and described heat outlet is warm with described first hot-wind inlet and described second respectively
Wind entrance is connected；
Fine coal drying device, described fine coal drying device has the second cleaned coal entrance, is dried hot gas inlet, xeraphium coal export
With dry offgas outlet, described second cleaned coal entrance is connected with described second cleaned coal outlet；
Gasifying powder coal device, described gasifying powder coal device has the outlet of dry fine coal entrance gentle activating QI, and described dry fine coal enters
Mouth is connected with described xeraphium coal export.
Thus, according to the system of the process low-order coal of this utility model embodiment by after, staged care broken to low-order coal again
Carry out sorting process, the efficiency of separation of low-order coal can be significantly improved, and the product of haze in processing procedure can be significantly reduced
Raw, use dense media that staged care gained fine coal is sorted simultaneously, the sharpness of separation of fine coal can be significantly improved, thus
Discharge refuse efficiency can be improved, and use hot blast that classification gained lump coal is processed, not only achieve predrying and discharge refuse one
Body, and lump coal and the moisture on fine coal surface can be removed by pre-dried, thus granule during reducing discharge refuse
Between the bonding probability of (especially between cleaned coal and spoil), solve existing combined type discharge refuse technology to low-order coal discharge refuse
The problem that rate is low, and solve the problem that semicoke calorific value is low, ash is high and sulphur content is high after pyrolysis, i.e. use this practicality new
The system of type can significantly improve the quality of pyrolysis product in pyrolytic process, secondly by by combined type discharge refuse technology and pyrolysis skill
Art organic integration, is used for discharge refuse process by the waste heat produced in pyrolytic process cleverly, can significantly reduce the processing procedure energy
Cost, is dried process additionally by before fine coal is carried out gasification process, can significantly improve gas in gasification
Productivity, and classification gained fine coal is carried out gasification process, it is possible not only to significantly improve raw material availability, and can improve
Business Economic Benefit.
It addition, it is special to have following additional technology according to the system of the process low-order coal of this utility model above-described embodiment
Levy:
Optional, the system of described process low-order coal farther includes: dust arrester, described dust arrester have gas inlet,
Gas outlet and dust outlet, described gas inlet respectively with described first offgas outlet, described second offgas outlet and described
It is dried offgas outlet to be connected.
Optional, the system of described process low-order coal farther includes: waste heat recovery plant, and described waste heat recovery plant has
Gasification gas entrance, gas exit and superheated steam outlet, described gasification gas entrance is connected with the outlet of described gasification gas, described mistake
Vapours outlet is connected with described dry hot gas inlet.Thus, it is possible to realize making full use of of system waste heat, thus reduce energy
Source 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
Above-mentioned and/or additional aspect of the present utility model and advantage are from combining the accompanying drawings below description to embodiment and will become
Substantially with easy to understand, wherein:
Fig. 1 is the system structure schematic diagram of the process low-order coal according to one embodiment of this utility model；
Fig. 2 is the system structure schematic diagram of the process low-order coal according to this utility model further embodiment；
Fig. 3 is the system structure schematic diagram of the process low-order coal according to another embodiment of this utility model；
Fig. 4 is the method flow signal of the system process low-order coal of the process low-order coal using one embodiment of this utility model
Figure；
Fig. 5 is the method flow signal of the system process low-order coal of the process low-order coal using this utility model further embodiment
Figure；
Fig. 6 is the method flow signal of the system process low-order coal of the process low-order coal using another embodiment of this utility model
Figure；
Fig. 7 is the system structure schematic diagram of the process low-order coal according to another embodiment of this utility model.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to limit of the present utility model
System.
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, the utility model proposes a kind of system processing low-order coal.New according to this practicality
The embodiment of type, this system includes: breaker, and described breaker has low-order coal entrance and break up coal outlet；Classification
Device, described grading plant has break up coal entrance, lump coal outlet and fine coal outlet；Lump coal hot blast combined type sorting unit,
Described lump coal hot blast combined type sorting unit has lump coal entrance, the first hot-wind inlet, the first spoil exports, the first cleaned coal goes out
Mouth and the first offgas outlet, described lump coal entrance is connected with the outlet of described lump coal；Fine coal hot blast dense medium separation device, described
Fine coal hot blast dense medium separation device have fine coal entrance, the second hot-wind inlet, solid dense media entrance, second spoil outlet,
Second cleaned coal outlet and the second offgas outlet, described fine coal entrance is connected with the outlet of described fine coal；Pyrolysis installation, described pyrolysis
Device has the first cleaned coal entrance, semicoke outlet and pyrolysis oil gas vent, and described first cleaned coal entrance goes out with described first cleaned coal
Mouth is connected；Semicoke waste-heat recovery device, described semicoke waste-heat recovery device has semicoke entrance, cooling semicoke outlet and steam
Outlet, the outlet of described semicoke entrance and described semicoke is connected, described heat outlet respectively with described first hot-wind inlet and described
Second hot-wind inlet is connected；Fine coal drying device, described fine coal drying device have the second cleaned coal entrance, be dried hot gas inlet,
Xeraphium coal export and dry offgas outlet, described second cleaned coal entrance is connected with described second cleaned coal outlet；Coal gasification fills
Putting, described gasifying powder coal device has the outlet of dry fine coal entrance gentle activating QI, described dry fine coal entrance and described xeraphium
Coal export is connected.Inventor finds, carries out sorting process again by after, staged care broken to low-order coal, can significantly carry
The efficiency of separation of low-order and high-order coal, and the generation of haze in processing procedure can be significantly reduced, use dense media to classification simultaneously
Process gained fine coal to sort, the sharpness of separation of fine coal can be significantly improved, such that it is able to improve discharge refuse efficiency, and adopt
With hot blast, classification gained lump coal is processed, not only achieve predrying and discharge refuse integration, and pass through pre-dried
Can remove lump coal and the moisture on fine coal surface, thus during reducing discharge refuse between granule (especially cleaned coal and spoil it
Between) bonding probability, solve the problem that existing combined type discharge refuse technology is low to low-order coal rate of discharging refuse, and solve heat
The problem that semicoke calorific value is low, ash is high and sulphur content is high after solution, i.e. uses system of the present utility model can significantly improve pyrolysis
During the quality of pyrolysis product, secondly by by combined type discharge refuse technology and pyrolytic technique organic integration, cleverly will pyrolysis
During the waste heat that produces for discharge refuse process, processing procedure energy cost can be significantly reduced, additionally by fine coal is being entered
It is dried process before row gasification process, gas yield in gasification can be significantly improved, and by classification gained fine coal
Carry out gasification process, be possible not only to significantly improve raw material availability, and Business Economic Benefit can be improved.
System this utility model embodiment being processed low-order coal below with reference to Fig. 1-3 is described in detail.According to this practicality
Novel embodiment, this system includes: breaker 100, grading plant 200, lump coal hot blast combined type sorting unit 300,
Fine coal hot blast dense medium separation device 400, pyrolysis installation 500, semicoke waste-heat recovery device 600, fine coal drying device 700
With gasifying powder coal device 800.
According to embodiment of the present utility model, low breaker 100 has low-order coal entrance 101 and break up coal outlet 102,
And be suitable to low-order coal be carried out break process, such that it is able to obtain break up coal.Thus, it is possible to significantly improve in subsequent process low
The efficiency of separation of rank coal.It should be noted that the breaker used can be entered by those skilled in the art according to actual needs
Row selects.
According to embodiment of the present utility model, grading plant 200 has break up coal entrance 201, lump coal outlet 202 and fine coal
Outlet 203, and be suitable to above-mentioned broken gained break up coal is carried out staged care, such that it is able to obtain lump coal and fine coal.Thus,
It is possible not only to significantly reduce the dust during follow-up separation, and the waste of subsequent thermal solution preocess raw material can be avoided, thus
Economize in raw materials cost.
According to an embodiment of the present utility model, the particle diameter of lump coal is not particularly restricted, and those skilled in the art can root
Selecting according to being actually needed, according to specific embodiment of the utility model, the particle diameter of lump coal can be to be not less than 6mm, and
The particle diameter of fine coal can be less than 6mm.Thus, by gained break up coal carries out staged care, then use hot blast to block
Coal sorts, and uses hot blast dense media that fine coal is carried out sorting process, can significantly improve the efficiency of separation of lump coal and fine coal,
Thus improve pyrolysis hydrocarbon yield gentle activating QI yield.
According to embodiment of the present utility model, lump coal hot blast combined type sorting unit 300 has lump coal entrance the 301, first heat
Wind entrance the 302, first spoil outlet the 303, first cleaned coal outlet 304 and first offgas outlet 305, lump coal entrance 301 with
Lump coal outlet 202 is connected, and is suitable for use with hot blast the lump coal obtained by above-mentioned classification is carried out discharge refuse and pre-dried, from
And the first spoil, the first cleaned coal and the first tail gas containing dust can be respectively obtained.Inventor finds, by using hot blast
Lump coal is processed, not only achieves predrying and discharge refuse integration, and lump coal table can be removed by pre-dried
The moisture in face, thus bonding probability (especially between cleaned coal and spoil) between granule during reducing discharge refuse, solve
The problem that existing combined type discharge refuse technology is low to low-order coal rate of discharging refuse, and solve the semicoke calorific value after follow-up pyrolysis low,
The problem that ash is high and sulphur content is high, i.e. uses system of the present utility model can significantly improve the matter of pyrolysis product in pyrolytic process
Amount.
According to an embodiment of the present utility model, the temperature of the first hot blast is not particularly restricted, and those skilled in the art can
To select according to actual needs, according to specific embodiment of the utility model, the temperature of the first hot blast can be
80～130 DEG C.
According to further embodiment of the present utility model, the flow velocity of the first hot blast is not particularly restricted, those skilled in the art
Can select according to actual needs, according to specific embodiment of the utility model, the flow velocity of the first hot blast can be
9～24m/s.Inventor finds, uses the hot blast of this flow rates so that cleaned coal and spoil are in buoyancy and each deadweight in lump coal
It is clearly separated under power effect, and the moisture on lump coal surface can be taken away, reduce during discharge refuse between granule (especially
Between cleaned coal and spoil) bonding probability, thus improve pyrolysis product in subsequent thermal solution preocess while discharge refuse efficiency improving
Quality and productivity.
According to embodiment of the present utility model, fine coal hot blast dense medium separation device 400 has and has fine coal entrance 401, second
Hot-wind inlet 402, solid dense media entrance the 403, second spoil outlet the 404, second cleaned coal outlet 405 and the second tail gas go out
Mouth 406, fine coal entrance 401 is connected with fine coal outlet 203, uses the second hot blast and solid dense media to sort fine coal
And pre-dried, such that it is able to respectively obtain the second spoil, the second cleaned coal and the second tail gas containing dust.Invention Crinis Carbonisatus
Existing, by using dense media that classification gained fine coal is sorted, the sharpness of separation of fine coal can be significantly improved, thus improve
Discharge refuse efficiency, is not only achieved predrying and discharge refuse integration, and can be removed the water on fine coal surface by pre-dried
Point, thus reduce in assorting room between granule the bonding probability (especially between cleaned coal and spoil), solve existing
The combined type discharge refuse technology problem low to low-order coal rate of discharging refuse, and then the quality of follow-up gained gasification gas can be significantly improved.
According to an embodiment of the present utility model, the temperature of the second hot blast is not particularly restricted, and those skilled in the art can
To select according to actual needs, according to specific embodiment of the utility model, the temperature of the second hot blast can be
100～200 DEG C.
According to further embodiment of the present utility model, the fluidizing velocity of dense media is not particularly restricted, people in the art
Member can select according to actual needs, and according to specific embodiment of the utility model, the fluidizing velocity of dense media can be
0.7～1.6m/s.Inventor finds, if the fluidizing velocity of dense media is too low so that solid dense media therein can not fully fluidize,
The dense media axial distributions of solids density formed is poor, thus causes separating effect poor, and if the fluidizing velocity of dense media is too high, deposit
At local bubbling and bubbles burst etc. so that the fluctuation of dense media bed density is relatively big, again results in separating effect the most poor.By
This, select the fluidizing velocity of dense media be 0.7～1.6m/s so that the dense media bed density Density Distribution of formation preferable,
Thus improve separating effect.
According to another embodiment of the present utility model, the separating density of dense media is not particularly restricted, people in the art
Member can select according to actual needs, and according to specific embodiment of the utility model, the separating density of dense media can be
1.2～1.8g/cm3.Inventor finds, if the separating density of dense media is too low, part cleaned coal is brought in spoil, causes cleaned coal
The response rate reduce, and if the separating density of dense media is too high, part spoil is brought in cleaned coal, again results in discharge refuse weak effect.
Thus, the separating density selecting dense media is 1.2～1.8g/cm3The high efficiency separation of cleaned coal and spoil can be realized.
It should be noted that " dense media " herein refers to the gas-solid fluidized medium formed by hot blast and solid dense media.
In this step, concrete, solid dense media can use magnetite powder, magnetite powder and hot blast to be mixed to form fluidisation Jie
Matter, fine coal is in this fluidizing agent, and according to Archimedes principle, cleaned coal separates after realizing layering with spoil according to density variation.
According to embodiment of the present utility model, pyrolysis installation 500 has the first cleaned coal entrance 501, semicoke outlet 502 and heat
Solving oil gas vent 503, the first cleaned coal entrance 501 is connected with the first cleaned coal outlet 304, and is suitable to above-mentioned sorting process institute
The first cleaned coal obtained carries out pyrolysis processing, such that it is able to obtain semicoke and pyrolysis oil gas.Inventor finds, by being combined
Formula discharge refuse technology and pyrolytic technique organic integration so that before low-order coal is carried out pyrolysis processing, carry out discharge refuse process, permissible
Significantly improve hydrocarbon yield in pyrolytic process.
According to an embodiment of the present utility model, the temperature of pyrolysis processing is not particularly restricted, and those skilled in the art can
To select according to actual needs, according to specific embodiment of the utility model, the temperature of pyrolysis processing can be
500～900 DEG C.
According to embodiment of the present utility model, semicoke waste-heat recovery device 600 has semicoke entrance 601, cooling semicoke outlet
602 and heat outlet 603, semicoke entrance 601 is connected with semicoke outlet 502, heat outlet 603 and the first hot-wind inlet
302 are connected with the second hot-wind inlet 402, and are suitable to pyrolytic process gained semicoke is carried out waste heat recovery processing, such that it is able to
Obtain steam and cooling semicoke, and the temperature controlling steam is 80～130 DEG C, and steam is returned lump coal hot blast combined type divide
Screening device and fine coal hot blast dense medium separation device use as hot blast.Inventor finds, by by combined type discharge refuse technology and
Pyrolytic technique organic integration, is used for discharge refuse process by the waste heat produced in pyrolytic process cleverly, can significantly reduce and process
Journey energy cost.
In this step, concrete, use the semicoke waste-heat recovery device semicoke to obtaining in pyrolytic process to carry out waste heat recovery,
The waste heat of semicoke can obtain steam by conversion in waste-heat recovery device, and obtained steam is after voltage stabilizing bag voltage stabilizing
Resupply and use as hot blast to lump coal hot blast combined type sorting unit and fine coal hot blast dense medium separation device.
According to embodiment of the present utility model, fine coal drying device 700 has the second cleaned coal entrance 701, is dried hot gas inlet
702, xeraphium coal export 703 and dry offgas outlet 704, the second cleaned coal entrance 701 is connected with the second cleaned coal outlet 405,
And be suitable for use with being dried steam and sorting gained the second cleaned coal be dried process, such that it is able to obtain being dried tail gas and xeraphium
Coal.Thus, it is possible to significantly improve follow-up coal gasification efficiency.
According to an embodiment of the present utility model, the temperature and the flow velocity that are dried steam are not particularly restricted, art technology
Personnel can select according to actual needs, and according to specific embodiment of the utility model, the temperature being dried steam can be
100～200 degrees Celsius, the flow velocity being dried steam can be 0.1～0.5m/s.Concrete, obtained xeraphium moisture in coal contains
Amount is less than 10wt%.
According to embodiment of the present utility model, gasifying powder coal device 800 has dry fine coal entrance 801 gentle activating QI outlet 802,
It is dried fine coal entrance 801 to be connected with xeraphium coal export 703, and is suitable to dry fine coal obtained in fine coal drying device
Carry out gasification process, such that it is able to obtain the gas that gasifies.Thus, carrying out gasification process by gained being dried fine coal, not only may be used
To significantly improve raw material availability, and Business Economic Benefit can be improved.
According to an embodiment of the present utility model, the temperature of gasification process is not particularly restricted, and those skilled in the art can
To select according to actual needs, according to specific embodiment of the utility model, the temperature of gasification process can be
800～1100 DEG C.
The system of the process low-order coal according to this utility model embodiment is by carrying out after, staged care broken to low-order coal point again
Choosing processes, and can significantly improve the efficiency of separation of low-order coal, and can significantly reduce the generation of haze in processing procedure, with
Staged care gained fine coal is sorted by Shi Caiyong dense media, can significantly improve the sharpness of separation of fine coal, such that it is able to carry
High discharge refuse efficiency, and use hot blast that classification gained lump coal is processed, not only achieve predrying and discharge refuse integration,
And lump coal and the moisture on fine coal surface can be removed by pre-dried, thus (outstanding between granule during reducing discharge refuse
It is between cleaned coal and spoil) bonding probability, solve existing combined type discharge refuse technology to low the asking of low-order coal rate of discharging refuse
Topic, and solve the problem that semicoke calorific value is low, ash is high and sulphur content is high after pyrolysis, i.e. use system of the present utility model
The quality of pyrolysis product in pyrolytic process can be significantly improved, secondly by by combined type discharge refuse technology and the organic collection of pyrolytic technique
Become, cleverly the waste heat produced in pyrolytic process is used for discharge refuse process, processing procedure energy cost can be significantly reduced, separately
Outward by being dried process before fine coal is carried out gasification process, gas yield in gasification can be significantly improved, and
And classification gained fine coal is carried out gasification process, it is possible not only to significantly improve raw material availability, and business economic can be improved
Benefit.
With reference to Fig. 2, farther include according to the system of the process low-order coal of this utility model embodiment: dust arrester 900.
According to embodiment of the present utility model, dust arrester 900 has gas inlet 901, gas outlet 902 and dust and goes out
Mouthfuls 903, gas inlet 901 respectively with the first offgas outlet the 305, second offgas outlet 406 and dry offgas outlet 704 phase
Connect, and be suitable to the first tail gas containing dust obtained in lump coal hot blast combined type sorting unit, fine coal hot blast dense media
The second tail gas containing dust that sorting unit obtains and fine coal drying device obtain the dry tail gas containing dust and carries out dedusting
Process, can collect and obtain dust.Thus, by dust removal process, the dust taken out of in tail gas can be isolated, thus drop
Low environment pollutes.Concrete, dust arrester can be whirlwind separator.
With reference to Fig. 3, farther include according to the system of the process low-order coal of this utility model embodiment: waste heat recovery plant
1000。
According to embodiment of the present utility model, waste heat recovery plant 1000 has gasification gas entrance 1001, gas exit 1002
Exporting 1003 with superheated steam, gasification gas entrance 1001 is connected with gasification gas outlet 802, and superheated steam outlet 903 is with dry
Dry hot gas inlet 702 is connected, and is suitable to carry out the gasification gas obtained in gasifying powder coal device supply to waste heat recovery plant
Waste heat recovery processing, such that it is able to obtain coal gas and superheated steam, and is back to fine coal drying device as dry using superheated steam
Scorching gas uses.Thus, it is possible to realize making full use of of system waste heat, thus reduce energy cost.Concrete, by used heat
The superheat steam temperature obtained in retracting device controls at 100～200 degrees Celsius, then does as fine coal after voltage stabilizing bag voltage stabilizing
The dry medium of dry process.According to specific embodiment of the utility model, waste heat recovery plant can be waste heat boiler.
As it has been described above, according to the system of the process low-order coal of this utility model embodiment can have selected from following advantage at least it
One:
The low-order coal that the system of the process low-order coal according to this utility model embodiment uses classification, sorts, be pyrolyzed and gasify carries
Matter method, the method use by classification, sort, be pyrolyzed and gasification technology coupling, use reclaim pyrolysis after semicoke waste heat make
For separating medium, use the waste heat reclaiming gasification gas as dry medium, reduce system energy consumption and operating cost, reduce ring
Environment pollution, meanwhile, improves the effective rate of utilization of low-order coal.
The low-order coal that the system of the process low-order coal according to this utility model embodiment uses classification, sorts, be pyrolyzed and gasify carries
Matter method, the method can improve lump coal, the efficiency of separation of fine coal and dehydration rate by the hot air blowing grading sorting of raw coal；Lump coal warp
It is pyrolyzed again after sorting process, improves effective treating capacity and the quality of pyrolysis product of pyrolysis installation, reduce pyrolysis energy
Consumption；It is being dried and is gasifying after the sorted process of fine coal, decreasing and be dried and the specific energy consumption of gasification, reduce coal
Gas impurity.
The low-order coal that the system of the process low-order coal according to this utility model embodiment uses classification, sorts, be pyrolyzed and gasify carries
Matter method, the method, by the spoil in removing raw coal in advance and portion of water, improves drying unit, pyrolysis unit and gasification
The treating capacity of unit, reduces the impurity contents such as the ash in pyrolysis product and gasification product, sulfur.
The low-order coal that the system of the process low-order coal according to this utility model embodiment uses classification, sorts, be pyrolyzed and gasify carries
Matter method, the method uses lump coal combined type dry separation fine coal dense medium separation lump coal pyrolysis fine coal gasification process,
In assorting room, without dense media, there is the advantages such as technique is simple, stable, production cost is low.
The system of the process low-order coal according to this utility model embodiment uses classification, sorting pyrolysis and the low-order coal upgrading of gasification
Method, the method effect when process lump coal and fine coal are the raw coal of medium optional or easy choosing is the most obvious.
Understand for convenience, below to using this utility model embodiment to process the method that the system of low-order coal processes low-order coal
It is described.According to embodiment of the present utility model, the method includes: (1) is by low-order coal supply to described breaker
Carry out break process, in order to obtain break up coal；(2) supply of described break up coal is carried out staged care to described grading plant,
To obtain lump coal and fine coal；(3) described lump coal supply to described lump coal hot blast combined type sorting unit will use the first heat
Wind carries out discharge refuse and pre-dried to described lump coal, in order to respectively obtain the first spoil, the first cleaned coal and containing the of dust
One tail gas；(4) supply of described fine coal is used the second hot blast and solid dense medium to described fine coal hot blast dense medium separation device
Described fine coal of verifying carries out sorting and pre-dried, in order to respectively obtain the second spoil, the second cleaned coal and containing the of dust
Two tail gas；(5) described first cleaned coal supply is carried out pyrolysis processing to described pyrolysis installation, in order to obtain semicoke and pyrolysis
Oil gas；(6) supply of described semicoke is carried out waste heat recovery processing to described waste-heat recovery device, in order to obtain cooling down semicoke
And steam, and a part for described steam is returned step (3) use as described first hot blast, by another of described steam
Part returns step (4) and uses as described second hot blast；(7) by described second cleaned coal supply to described fine coal drying device
Middle employing is dried steam and described second cleaned coal is dried process, in order to obtain being dried fine coal and dry tail gas；And (8)
The supply of described dry fine coal is carried out gasification process to described gasifying powder coal device, in order to obtain the gas that gasifies.Inventor finds,
Carry out sorting process again by after, staged care broken to low-order coal, the efficiency of separation of low-order coal can be significantly improved, and
The generation of haze in processing procedure can be significantly reduced, use dense media that staged care gained fine coal is sorted simultaneously, can
To significantly improve the sharpness of separation of fine coal, such that it is able to improve discharge refuse efficiency, and use hot blast that classification gained lump coal is carried out
Process, not only achieve the integration of predrying and discharge refuse, and lump coal and fine coal surface can be removed by pre-dried
Moisture, thus bonding probability (especially between cleaned coal and spoil) between granule during reducing discharge refuse, solve existing
The problem that some combined type discharge refuse technology are low to low-order coal rate of discharging refuse, and solve that the semicoke calorific value after pyrolysis is low, ash is high
The problem high with sulphur content, i.e. uses system of the present utility model can significantly improve the quality of pyrolysis product in pyrolytic process, its
Secondary by by combined type discharge refuse technology and pyrolytic technique organic integration, cleverly the waste heat produced in pyrolytic process being used for discharge refuse
Process, can significantly reduce processing procedure energy cost, is dried place additionally by before fine coal is carried out gasification process
Reason, can significantly improve gas yield in gasification, and classification gained fine coal is carried out gasification process, be possible not only to show
Write and improve raw material availability, and Business Economic Benefit can be improved.It should be noted that it is above-mentioned for processing low-order coal
Feature and advantage described by system are equally applicable to the method for this process low-order coal, and here is omitted.
The method system using this utility model embodiment to process low-order coal being processed low-order coal below with reference to Fig. 4-6 is carried out
Describe in detail.According to embodiment of the present utility model, the method includes:
S100: low-order coal supply is carried out break process to breaker
According to embodiment of the present utility model, low-order coal supply is carried out break process, such that it is able to obtain to breaker
Break up coal.Thus, it is possible to significantly improve the efficiency of separation of low-order coal in subsequent process.It should be noted that art technology
The breaker used can be selected by personnel according to actual needs.
S200: break up coal supply is carried out staged care to grading plant
According to embodiment of the present utility model, the supply of above-mentioned gained break up coal is carried out staged care to grading plant, thus
Lump coal and fine coal can be obtained.Thus, it is possible not only to significantly reduce the dust during follow-up separation, and after can avoiding
The waste of continuous pyrolytic process raw material, thus the cost that economizes in raw materials.
According to an embodiment of the present utility model, the particle diameter of lump coal is not particularly restricted, and those skilled in the art can root
Selecting according to being actually needed, according to specific embodiment of the utility model, the particle diameter of lump coal can be to be not less than 6mm, and
The particle diameter of fine coal can be less than 6mm.Thus, by gained break up coal carries out staged care, then use hot blast to block
Coal sorts, and uses hot blast dense media that fine coal is carried out sorting process, can significantly improve the efficiency of separation of lump coal and fine coal,
Thus improve pyrolysis hydrocarbon yield gentle activating QI yield.
S300: use the first hot blast that lump coal is carried out discharge refuse and predry to lump coal hot blast combined type sorting unit lump coal supply
Dry process
According to embodiment of the present utility model, the lump coal obtained by above-mentioned classification is supplied to lump coal hot blast combined type sorting unit
Middle employing the first hot blast carries out discharge refuse and pre-dried to lump coal, such that it is able to respectively obtain the first spoil, the first cleaned coal and
The first tail gas containing dust.Inventor find, by use hot blast lump coal is processed, not only achieve predrying and
Discharge refuse integration, and the moisture on lump coal surface can be removed by pre-dried, thus granule during reducing discharge refuse
Between the bonding probability of (especially between cleaned coal and spoil), solve existing combined type discharge refuse technology to low-order coal discharge refuse
The problem that rate is low, and solve the problem that semicoke calorific value is low, ash is high and sulphur content is high after follow-up pyrolysis, i.e. use this reality
The quality of pyrolysis product in pyrolytic process can be significantly improved by novel system.
According to an embodiment of the present utility model, the temperature of the first hot blast is not particularly restricted, and those skilled in the art can
To select according to actual needs, according to specific embodiment of the utility model, the temperature of the first hot blast can be
80～130 DEG C.
According to further embodiment of the present utility model, the flow velocity of the first hot blast is not particularly restricted, those skilled in the art
Can select according to actual needs, according to specific embodiment of the utility model, the flow velocity of the first hot blast can be
9～24m/s.Inventor finds, uses the hot blast of this flow rates so that cleaned coal and spoil are in buoyancy and each deadweight in lump coal
It is clearly separated under power effect, and the moisture on lump coal surface can be taken away, reduce during discharge refuse between granule (especially
Between cleaned coal and spoil) bonding probability, thus improve pyrolysis product in subsequent thermal solution preocess while discharge refuse efficiency improving
Quality and productivity.
S400: use the second hot blast and solid dense media that fine coal is entered to fine coal hot blast dense medium separation device fine coal supply
Row discharge refuse and pre-dried
According to embodiment of the present utility model, by fine coal supply to fine coal hot blast dense medium separation device uses the second hot blast and
Solid dense media carries out discharge refuse and pre-dried to fine coal, such that it is able to respectively obtain the second spoil, the second cleaned coal and contain
Second tail gas of dust.Inventor finds, by using dense media to sort classification gained fine coal, can significantly improve
The sharpness of separation of fine coal, thus improve discharge refuse efficiency, not only achieve predrying and discharge refuse integration, and by predrying
Process can remove the moisture on fine coal surface, thus reduces in assorting room between granule (especially between cleaned coal and spoil)
Bonding probability, solve the problem that existing combined type discharge refuse technology is low to low-order coal rate of discharging refuse, and then can significantly improve
The quality of follow-up gained gasification gas.
According to an embodiment of the present utility model, the temperature of the second hot blast is not particularly restricted, and those skilled in the art can
To select according to actual needs, according to specific embodiment of the utility model, the temperature of the second hot blast can be
100～200 DEG C.
According to further embodiment of the present utility model, the fluidizing velocity of dense media is not particularly restricted, people in the art
Member can select according to actual needs, and according to specific embodiment of the utility model, the fluidizing velocity of dense media can be
0.7～1.6m/s.Inventor finds, if the fluidizing velocity of dense media is too low so that solid dense media therein can not fully fluidize,
The dense media axial distributions of solids density formed is poor, thus causes separating effect poor, and if the fluidizing velocity of dense media is too high, deposit
At local bubbling and bubbles burst etc. so that the fluctuation of dense media bed density is relatively big, again results in separating effect the most poor.By
This, select the fluidizing velocity of dense media be 0.7～1.6m/s so that the dense media bed density Density Distribution of formation preferable,
Thus improve separating effect.
According to another embodiment of the present utility model, the separating density of dense media is not particularly restricted, people in the art
Member can select according to actual needs, and according to specific embodiment of the utility model, the separating density of dense media can be
1.2～1.8g/cm3.Inventor finds, if the separating density of dense media is too low, part cleaned coal is brought in spoil, causes cleaned coal
The response rate reduce, and if the separating density of dense media is too high, part spoil is brought in cleaned coal, again results in discharge refuse weak effect.
Thus, the separating density selecting dense media is 1.2～1.8g/cm3The high efficiency separation of cleaned coal and spoil can be realized.
It should be noted that " dense media " herein refers to the gas-solid fluidized medium formed by hot blast and solid dense media.
In this step, concrete, solid dense media can use magnetite powder, magnetite powder and hot blast to be mixed to form fluidisation Jie
Matter, fine coal is in this fluidizing agent, and according to Archimedes principle, cleaned coal separates after realizing layering with spoil according to density variation.
S500: the first cleaned coal supply is carried out pyrolysis processing to pyrolysis installation
According to embodiment of the present utility model, the first cleaned coal obtained by above-mentioned lump coal hot blast combined type sorting unit is supplied
Pyrolysis processing is carried out, such that it is able to obtain semicoke and pyrolysis oil gas to pyrolysis installation.Inventor finds, by by combined type
Discharge refuse technology and pyrolytic technique organic integration so that before low-order coal is carried out pyrolysis processing, carry out discharge refuse process, Ke Yixian
Write and improve hydrocarbon yield in pyrolytic process.
According to an embodiment of the present utility model, the temperature of pyrolysis processing is not particularly restricted, and those skilled in the art can
To select according to actual needs, according to specific embodiment of the utility model, the temperature of pyrolysis processing can be
500～900 DEG C.
S600: semicoke supply is carried out waste heat recovery processing to semicoke waste-heat recovery device, and steam is returned lump coal hot blast
Combined type sorting unit and fine coal hot blast dense medium separation device use as hot blast
According to embodiment of the present utility model, remaining by gained semicoke supply in pyrolytic process to semicoke waste-heat recovery device is carried out
Recuperation of heat processes, such that it is able to obtain steam and cooling semicoke, and the temperature controlling steam is 80～130 DEG C, and by steam
A part return lump coal hot blast combined type sorting unit and use as the first hot blast, another part of steam is returned fine coal hot
Wind dense medium separation device uses as the second hot blast.Inventor finds, by combined type discharge refuse technology and pyrolytic technique being had
Machine is integrated, cleverly the waste heat produced in pyrolytic process is used for discharge refuse process, can significantly reduce processing procedure energy cost.
In this step, concrete, use the semicoke waste-heat recovery device semicoke to obtaining in pyrolytic process to carry out waste heat recovery,
The waste heat of semicoke can obtain steam by conversion in semicoke waste-heat recovery device, and obtained steam is steady through voltage stabilizing bag
Resupply after pressure and use as hot blast to lump coal hot blast combined type sorting unit and fine coal hot blast dense medium separation device.
S700: will use dry steam that fine coal is dried process in the second cleaned coal supply to fine coal drying device
According to embodiment of the present utility model, the second cleaned coal obtained by fine coal hot blast dense medium separation device is supplied to fine coal
Drying device use dry steam fine coal is dried process, such that it is able to obtain being dried tail gas and dry fine coal.Thus,
Follow-up coal gasification efficiency can be significantly improved.
According to an embodiment of the present utility model, the temperature and the flow velocity that are dried steam are not particularly restricted, art technology
Personnel can select according to actual needs, and according to specific embodiment of the utility model, the temperature being dried steam can be
100～200 degrees Celsius, the flow velocity being dried steam can be 0.1～0.5m/s.Concrete, obtained xeraphium moisture in coal contains
Amount is less than 10wt%.
S800: the supply of dry fine coal is carried out gasification process to gasifying powder coal device
According to embodiment of the present utility model, the dry fine coal obtained by fine coal drying device is supplied to gasifying powder coal device
In carry out gasification process, such that it is able to obtain gasify gas.Thus, gasification process is carried out, not only by gained being dried fine coal
Raw material availability can be significantly improved, and Business Economic Benefit can be improved.
According to an embodiment of the present utility model, the temperature of gasification process is not particularly restricted, and those skilled in the art can
To select according to actual needs, according to specific embodiment of the utility model, the temperature of gasification process can be
800～1100 DEG C.
The system of the process low-order coal according to this utility model embodiment processes the method for low-order coal by crushing low-order coal, dividing
Level carries out sorting process after processing again, can significantly improve the efficiency of separation of low-order coal, and can significantly reduce processing procedure
The generation of middle haze, uses dense media to sort staged care gained fine coal simultaneously, can significantly improve the sorting of fine coal
Precision, such that it is able to improve discharge refuse efficiency, and uses hot blast to process classification gained lump coal, not only achieves predry
Dry integrated with discharge refuse, and lump coal and the moisture on fine coal surface can be removed by pre-dried, thus reduce discharge refuse
During the bonding probability of (especially between cleaned coal and spoil) between granule, solve existing combined type discharge refuse technology pair
The problem that low-order coal rate of discharging refuse is low, and solve the problem that semicoke calorific value is low, ash is high and sulphur content is high after pyrolysis, i.e. adopt
The quality of pyrolysis product in pyrolytic process can be significantly improved, secondly by by combined type discharge refuse skill by system of the present utility model
Art and pyrolytic technique organic integration, be used for discharge refuse process by the waste heat produced in pyrolytic process cleverly, can significantly reduce place
Reason process energy cost, is dried process additionally by before fine coal is carried out gasification process, can significantly improve gasification
During gas yield, and classification gained fine coal is carried out gasification process, is possible not only to significantly improve raw material availability, and
And Business Economic Benefit can be improved.
With reference to Fig. 5, the method processing low-order coal according to the system of the process low-order coal of this utility model embodiment farther includes:
S900: the first tail gas containing dust, the second tail gas containing dust and the supply of dry tail gas are entered to dust arrester
Row dust removal process
According to embodiment of the present utility model, by the first tail gas containing dust obtained by step S300, step S400 institute
The dry tail gas containing dust obtained in the second tail gas containing dust obtained and step S700 is carried out to dust arrester
Dust removal process, can collect dust.Thus, by dust removal process, the dust taken out of in tail gas can be isolated, thus drop
Low environment pollutes.Concrete, dust arrester can be whirlwind separator.
With reference to Fig. 6, the method processing low-order coal according to the system of the process low-order coal of this utility model embodiment farther includes:
S1000: the supply of gasification gas is carried out waste heat recovery processing to waste heat recovery plant, and superheated steam is returned S700
Middle conduct is dried steam and uses
According to embodiment of the present utility model, the gasification gas obtained in gasifying powder coal device supply is entered to waste heat recovery plant
Row waste heat recovery processing, such that it is able to obtain coal gas and superheated steam, and superheated steam is back to fine coal drying device as
It is dried steam to use.Thus, it is possible to realize making full use of of system waste heat, thus reduce energy cost.Concrete, will be useless
The superheat steam temperature obtained in heat reclamation device controls at 100～200 degrees Celsius, then as fine coal after voltage stabilizing bag voltage stabilizing
The dry medium of dry run.
Below with reference to specific embodiment, this utility model is described, it should be noted that these embodiments are only retouched
The property stated, and limit this utility model never in any form.
Embodiment
Low-order coal raw coal is processed by the system using the process low-order coal shown in Fig. 7, and the raw coal treating capacity of the present embodiment is
300000 tons/year, processing particle size range is full particle size fraction, the moisture of raw coal, ash, sulphur content, the analysis result such as table 1 of calorific value
Shown in.
The analysis result of table 1 raw coal character
| Full water (wt%) | Ash (wt%) | Sulphur content (wt%) | Lower heat value (kcal/kg) |
| Mt | Aad | St,ad | Qnet,ar |
| 27.75 | 22.28 | 0.69 | 4297.72 |
Detailed description of the invention includes the processing step of following sequence:
1), first raw coal is sent into classification dress by belt and feeder again by after carrying out crushing in run coal bin supply to breaker
Put and carry out staged care, obtain lump coal (granularity is not less than 6mm, and ash is 20.38%) and fine coal (granularity is less than 6mm,
Ash is 23.89%)；
2), the lump coal supply obtained by after classification is carried out sorting process to lump coal hot blast combined type sorting unit, control hot blast
Temperature 105 DEG C, ascending air speed 18.32m/s, lump coal, after hot blast combined type discharge refuse processes, obtains head coal product, cleaned coal
Moisture, ash, sulphur content be respectively 12.35%, 18.90%, 0.51%, just started with outer hot wind supply as discharge refuse medium；
3), by step 1) supply of gained fine coal carries out sorting process to fine coal hot blast dense medium separation device, controls hot blast temperature
100 DEG C, dense media fluidizing velocity 1.03m/s, separating density 1.55g/cm3, fine coal through fine coal hot blast sorting unit process after,
Obtain head coal product, the moisture of cleaned coal, ash, sulphur content are respectively 10.83%, 14..89%, 0.44%, outside just starting with
Hot wind supply is as discharge refuse medium；
4), by the cleaned coal obtained by step (2) sending into pyrolysis installation and carry out pyrolysis processing, pyrolysis temperature is 600 DEG C, obtains
Pyrolysis oil gas and semicoke, wherein gained semicoke is mellow lime is divided into 18.04%；
5), by step 4) obtained by semicoke supply to semicoke waste-heat recovery device, carry out remaining recycling, obtain cooling half
Jiao and steam, and obtained steam (80～130 DEG C) is sent into lump coal hot blast combined type sorting unit and fine coal after voltage stabilizing
Hot blast dense medium separation device uses as hot blast；
6), by step 3) obtained by cleaned coal send into fine coal drying device be dried process, obtain be dried fine coal, wherein,
Dry hot air temperature is 180 DEG C, and flow velocity is 0.27m/s, is dried the moisture 7.13% of fine coal, the dry steam just begun with
For superheated steam；
7), by step 2), step 3) gained sorting tail gas and step 6) gained is dried tail gas supply and receives to dust arrester
Dirt；
8), by dry fine coal feeding and carry out gasification process in gasifying powder coal device, obtain the gas that gasifies, gasification temperature is 950 DEG C,
Gasifying agent is oxygen/steam, is then entered in waste heat recovery plant by gasification gas and carries out recovery waste heat, obtains coal gas and overheated steaming
Vapour, and superheated steam supply is used as dry steam, from waste heat recovery plant coal gas out to fine coal drying device
The volume content of middle hydrogen is 35.22%, and the volume content of carbon monoxide is 28.98%.
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 (3)
1. the system processing low-order coal, it is characterised in that including:
Breaker, described breaker has low-order coal entrance and break up coal outlet；
Grading plant, described grading plant has break up coal entrance, lump coal outlet and fine coal outlet；
Lump coal hot blast combined type sorting unit, described lump coal hot blast combined type sorting unit has lump coal entrance, the first hot blast enters
Mouth, the first spoil outlet, the first cleaned coal outlet and the first offgas outlet, described lump coal entrance is connected with the outlet of described lump coal；
Fine coal hot blast dense medium separation device, described fine coal hot blast dense medium separation device has fine coal entrance, the second hot blast enters
Mouth, solid dense media entrance, the second spoil outlet, the second cleaned coal outlet and the second offgas outlet, described fine coal entrance and institute
State fine coal outlet to be connected；
Pyrolysis installation, described pyrolysis installation has the first cleaned coal entrance, semicoke outlet and pyrolysis oil gas vent, described first essence
Coal entrance is connected with described first cleaned coal outlet；
Semicoke waste-heat recovery device, described semicoke waste-heat recovery device has semicoke entrance, cooling semicoke outlet and heat outlet,
Described semicoke entrance is connected with the outlet of described semicoke, and described heat outlet is warm with described first hot-wind inlet and described second respectively
Wind entrance is connected；
Fine coal drying device, described fine coal drying device has the second cleaned coal entrance, is dried hot gas inlet, xeraphium coal export
With dry offgas outlet, described second cleaned coal entrance is connected with described second cleaned coal outlet；
Gasifying powder coal device, described gasifying powder coal device has the outlet of dry fine coal entrance gentle activating QI, and described dry fine coal enters
Mouth is connected with described xeraphium coal export.
The system of process low-order coal the most according to claim 1, it is characterised in that farther include:
Dust arrester, described dust arrester has gas inlet, gas outlet and dust outlet, described gas inlet respectively with
Described first offgas outlet, described second offgas outlet are connected with described dry offgas outlet.
The system of process low-order coal the most according to claim 1 and 2, it is characterised in that farther include:
Waste heat recovery plant, described waste heat recovery plant has gasification gas entrance, gas exit and superheated steam outlet, described
Gasification gas entrance is connected with the outlet of described gasification gas, and the outlet of described superheated steam is connected with described dry hot gas inlet.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105670703A (en) * | 2016-03-23 | 2016-06-15 | 北京神雾环境能源科技集团股份有限公司 | System and method for treating low-rank coal |
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| CN105670703A (en) * | 2016-03-23 | 2016-06-15 | 北京神雾环境能源科技集团股份有限公司 | System and method for treating low-rank coal |
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