CN107325832A - A kind of system and method for step-by-step processing lignite - Google Patents
A kind of system and method for step-by-step processing lignite Download PDFInfo
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- CN107325832A CN107325832A CN201710602251.0A CN201710602251A CN107325832A CN 107325832 A CN107325832 A CN 107325832A CN 201710602251 A CN201710602251 A CN 201710602251A CN 107325832 A CN107325832 A CN 107325832A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/005—After-treatment of coke, e.g. calcination desulfurization
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/18—Modifying the properties of the distillation gases in the oven
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
- C10C1/20—Refining by chemical means inorganic or organic compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0926—Slurries comprising bio-oil or bio-coke, i.e. charcoal, obtained, e.g. by fast pyrolysis of biomass
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- Oil, Petroleum & Natural Gas (AREA)
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- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Industrial Gases (AREA)
Abstract
The present invention discloses a kind of system and method for step-by-step processing lignite.The system includes：Pyrolysis oven, gas-liquid separation device, water Jiao's slurry preparation facilities, water Jiao's slurry gasification installation；The intracavitary of pyrolysis oven is provided with inner cylinder, and air collecting chamber is formed between inner cylinder and the furnace wall of pyrolysis oven, and the bottom of inner cylinder is exported provided with the first semicoke, and the bottom of air collecting chamber is exported provided with the second semicoke；The pyrolysis oil gas vent of pyrolysis oven connects the pyrolysis oil gas entrance of gas-liquid separation device；The first semicoke outlet of pyrolysis oven and the second semicoke export the semicoke entrance of connection water Jiao's slurry preparation facilities, the oil water mixture entrance of oil water mixture outlet connection water Jiao's slurry preparation facilities of gas-liquid separation device；Water Jiao's slurry entrance of water Jiao's slurry outlet connection water Jiao's slurry gasification installation of water Jiao's slurry preparation facilities.The present invention integrates lignite pyrolysis, catalytic cracking of tar, pyrolysis hydrocarbon filter, prepared by semicoke and oil water mixture into water Jiao's slurry, it is to avoid the discharge of waste water, the recycling for realizing tar.
Description
Technical field
The invention belongs to chemical technology field, a kind of system and method for step-by-step processing lignite is specifically related to.
Background technology
Lignite is a kind of oxygen-containing high, aqueous high, easy efflorescence, calorific value is low, stability is poor, easy spontaneous combustion and low bad of degree of coalification
Matter coal.Traditional lignite Land use systems are used for thermal power generation after mainly it is dried, and brown coal grading sub-prime is not implemented
Utilize.At present, brown coal hydrogasification preparing synthetic gas turns into one of main Land use systems of lignite, but rich oxygen content due to lignite and contains
Water feature so that lignite paste-forming properties are poor, water coal slurry concentration is low, gasification efficiency is poor.
Pyrolysis of coal is considered as most promising low order coal grading sub-prime Land use systems, can carry the oil-gas component in lignite
Take out, improve value-added content of product, but the wastewater treatment difficulty at present obtained by pyrolysis is big；Meanwhile, the lightweight group of pyrolytic tar
Divide content low, utilize difficulty.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of system and method for lignite step-by-step processing, the pyrolysis of collection lignite, Jiao
Oily catalytic pyrolysis, pyrolysis hydrocarbon filter, product are located away from one, and water Jiao's slurry gasification of preparation is obtained into synthesis gas, realize
The hierarchical synthesis of lignite is utilized.
An object of the present invention is to provide a kind of system of step-by-step processing lignite, including pyrolysis oven, gas-liquid separation device,
Water Jiao's slurry preparation facilities, water Jiao's slurry gasification installation；
The intracavitary of the pyrolysis oven is provided between inner cylinder, the furnace wall of the inner cylinder and pyrolysis oven and forms air collecting chamber, the heat
The fine coal entrance for solving stove is located at the top of the inner cylinder, and the lower sidewall of the inner cylinder, which is provided with filter opening, the air collecting chamber, to be provided with
Baffle plate, the top of the baffle plate is Catalytic Layer, and the top of the air collecting chamber is provided with pyrolysis oil gas vent, and the bottom of the inner cylinder is set
There is the outlet of the first semicoke, the bottom of the air collecting chamber is exported provided with the second semicoke；
Gas-liquid separation device includes pyrolysis oil gas entrance, cooling water inlet, pyrolysis gas outlet and oil water mixture outlet, institute
The pyrolysis oil gas vent for stating pyrolysis oven connects the pyrolysis oil gas entrance of the gas-liquid separation device；
Water Jiao's slurry preparation facilities includes semicoke entrance, oil water mixture entrance, dispersant entrance and the outlet of water Jiao's slurry, described
The first semicoke outlet of pyrolysis oven and the second semicoke export the semicoke entrance of connection water Jiao slurry preparation facilities, the gas-liquid point
Oil water mixture outlet from device connects the oil water mixture entrance of water Jiao slurry preparation facilities；
Water Jiao's slurry gasification installation includes water Jiao's slurry entrance, syngas outlet and cinder outlet, water Jiao slurry preparation facilities
Water Jiao's slurry outlet connection water Jiao's slurry gasification installation water Jiao's slurry entrance.
As preferred embodiments of the present invention, filter layer is provided with the air collecting chamber of the pyrolysis oven, the filter layer is located at institute
State the top of Catalytic Layer.
As preferred embodiments of the present invention, inclined deflector is provided with the bottom of the air collecting chamber of the pyrolysis oven, it is described
Deflector is located at second semicoke and exported between the furnace wall of pyrolysis oven.
As preferred embodiments of the present invention, the gas-liquid separation device also includes wastewater outlet, the wastewater outlet connection
The cooling water inlet of the gas-liquid separation device.
As preferred embodiments of the present invention, the intracavity bottom of water Jiao slurry gasification installation is provided with cinder baffle plate.
It is a further object of the present invention to provide a kind of method that utilization said system handles lignite, comprise the following steps：
A, the inner cylinder by powdery brown coal feeding pyrolysis oven, occur pyrolytic reaction, 750~800 DEG C of pyrolysis temperature, the waste coal of generation
Gas and semicoke, the raw coke oven gas carry part semicoke and enter air collecting chamber by filter opening, and another part semicoke is gone out by the first semicoke
Mouth discharge；
B, the raw coke oven gas and carrying semicoke, which enter after the air collecting chamber, to be risen, the semicoke and baffle plate of the part carrying
Collision rift falls, and is exported and discharged by the second semicoke；The raw coke oven gas carries out the catalytic pyrolysis of tar by Catalytic Layer, obtains heat
Oil gas is solved, the pyrolysis oil gas is discharged by pyrolysis oil gas vent；
C, by it is described pyrolysis oil gas be passed through after gas-liquid separation device, be passed through cooling water to it is described pyrolysis oil gas carry out cooling remove
Dirt, obtains pyrolysis gas and oil water mixture；
The burnt slurry preparation facilities of feeding water after D, the semicoke that first semicoke outlet and the second semicoke are exported into discharge are cooled down,
The oil water mixture is sent into water Jiao slurry preparation facilities, with dispersant, water Jiao's slurry is made；
E, by the water Jiao slurry feeding water Jiao slurry gasification installation, gasified at 1150~1350 DEG C, obtain synthesis gas with
Cinder.
It is preferred that, in the step B, the catalytic pyrolysis temperature of tar is 850~900 DEG C.
Further, the pyrolysis oil gas in the step B discharges the pyrolysis oven by filter layer after filtering.
As preferred embodiments of the present invention, the step C also produces waste water, using the waste water as cooling water, is passed through institute
State the cooling water inlet of gas-liquid separation device.
It is preferred that, granularity≤1mm of the powdery brown coal in the step A.
The system and method for the classification processing lignite that the present invention is provided, the pyrolysis of pyrolysis oven collection lignite, gas solid separation, tar are urged
Change cracking, pyrolysis hydrocarbon filter in one, improve the utilization rate of raw material；By catalytic cracking of tar, by the tar in raw coke oven gas
Pyrolysis gas is converted into, raw coke oven gas waste heat is made full use of, added value of product is improved；Water Jiao's slurry is prepared by oil water mixture, gone forward side by side
Tar therein and dust-laden, are further converted into the gas of high added value by water-filling Jiao's slurry gasification, it is to avoid the discharge of waste water, real
The recycling of existing dust-laden tar；By pyrolysis of coal and the coupling of water Jiao's slurry gasification, the efficient utilization of pyrolysis char is realized, finally
Brown coal grading sub-prime is realized to utilize.
Brief description of the drawings
Fig. 1 is the structural representation of system of the embodiment of the present invention.
Fig. 2 is the structure chart of the pyrolysis oven of the embodiment of the present invention.
Fig. 3 is the flow chart of present invention method.
Embodiment
Below in conjunction with drawings and examples, the embodiment to the present invention is described in more details, so as to energy
Enough more fully understand the advantage of the solution of the present invention and its various aspects.However, specific embodiments described below and implementation
Example is only the purpose of explanation, rather than limitation of the present invention.
Heretofore described " connection ", unless otherwise clear and definite regulation or restriction, should broadly understood, can be direct
It is connected or is connected by intermediary.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of system of step-by-step processing lignite, including pyrolysis oven 1, gas
Liquid separating apparatus 2, water Jiao slurry preparation facilities 3 and water Jiao's slurry gasification installation 4.The system of the present embodiment can focus in pyrolysis oven 1
Oily catalytic pyrolysis, semicoke and oil water mixture are used to prepare water Jiao's slurry, it is to avoid the discharge of sewage, realize the sharp again of tar
With.
As shown in Fig. 2 pyrolysis oven 1 is the pyrolysis installation of lignite, can be solid, liquids and gases production by powdery brown coal pyrolysis
Thing.Pyrolysis oven 1 is surrounded the chamber of a closing by furnace wall 11, and the top and bottom of pyrolysis oven 1 are taper, and middle part is cylinder.
The intracavitary of pyrolysis oven is provided with inner cylinder 12, and inner cylinder 12 will be divided into the chamber in two chambers, inner cylinder 12 in pyrolysis oven be pyrolysis chamber, inner cylinder
Air collecting chamber is formed between 12 and the furnace wall 11 of pyrolysis oven.
Fine coal entrance 101 is provided with the top furnace roof of the inner cylinder 12 of pyrolysis oven, powdery brown coal is entered by fine coal entrance 101
In pyrolysis oven.Fine coal entrance 101 is connected with disc type solids distribution device 18, is easy to being uniformly distributed for fine coal.The inner chamber of inner cylinder 12
Temperature be 750~800 DEG C, lignite in inner cylinder 12 be heated, occur pyrolytic reaction, 6~9s of pyrolysis time (second), generation semicoke and
Raw coke oven gas, raw coke oven gas is the mixture of gas and tar.
The raw coke oven gas being provided with the lower sidewall of inner cylinder 12 in filter opening 105, inner cylinder 12 enters air collecting chamber by filter opening 105,
The size of filter opening 105 is the mesh of 100 mesh~200.Inner cylinder 12 bottom of furnace body provided with the first semicoke outlet 103, inner cylinder it is exhausted big
Part semicoke discharges pyrolysis oven 1 by the first semicoke outlet 103.Least a portion of little particle semicoke passes through filter opening 105 with raw coke oven gas
Into air collecting chamber.
The top of air collecting chamber is provided with pyrolysis oil gas vent 102, and raw coke oven gas, which enters after air collecting chamber, to be risen.It is provided with air collecting chamber
Baffle plate 13, baffle plate 13 is fixed on the inner side of furnace wall 11 or the outside of inner cylinder 12, positioned at the top of filter opening 105.With raw coke oven gas
Rise, its semicoke particle carried collides with baffle plate 13, semicoke particles fall to furnace bottom.In the bottom of air collecting chamber provided with the
The semicoke fallen in two semicokes outlet 104, air collecting chamber is discharged by the second semicoke outlet 104.In the second semicoke outlet 104 and furnace wall
Deflector 16 is provided between 11, deflector 16 is obliquely installed, and the semicoke of whereabouts falls on deflector 16, can be straight along deflector 16
Connect and slide near the second semicoke outlet 104.
In air collecting chamber, the top of baffle plate 13 is provided with Catalytic Layer 14, and block tar cracking catalyst is included in Catalytic Layer 14
(catalyst is one kind in activated carbon, quick lime, dolomite), promotes the catalytic pyrolysis of tar.The raw coke oven gas of rising leads to
Cross the tar entered in Catalytic Layer 14, raw coke oven gas after baffle plate 13 to crack at 850~900 DEG C, obtain pyrolysis oil gas.
Filter layer 15 is additionally provided with the air collecting chamber of pyrolysis oven, filter layer 15 is located at the top of Catalytic Layer 14.Filter layer 15
Material is ceramic honeycomb filtering material, and pyrolysis oil gas can further filter solid particle therein by filter layer 15.Filtering
Pyrolysis oil gas afterwards discharges pyrolysis oven by being pyrolyzed oil gas vent 102.
Heater 17 is mounted in the inner cylinder 12 and air collecting chamber of pyrolysis oven, is that pyrolysis and the cracking of tar provide heat
Energy.The heater 17 of the present embodiment is heat accumulation type radiant tube, preferably can provide energy for pyrolysis oven.
The pyrolysis oven of the present embodiment integrates lignite pyrolysis, gas solid separation, catalytic cracking of tar, pyrolysis hydrocarbon filter,
Improve the utilization rate of raw material.By catalytic cracking of tar, it is pyrolysis gas by the tar conversion in raw coke oven gas, makes full use of raw coke oven gas
Waste heat, improves added value of product.
Gas-liquid separation device 2 is water spray system, the cooling and dedusting for being pyrolyzed oil gas.Gas-liquid separation device 2 includes heat
Solve oil gas entrance 21, cooling water inlet 22, pyrolysis gas outlet 23 and oil water mixture outlet 24 and wastewater outlet 25.Pyrolysis oven
It is pyrolyzed the pyrolysis oil gas entrance 21 that oil gas vent 102 connects gas-liquid separation device.Pyrolysis oil gas is entered by pyrolysis oil gas entrance 21
Gas-liquid separation device 2, cooling water is injected from cooling water inlet 22 into gas-liquid separation device 2.Cooling water inlet 22 is located at gas-liquid
The top of separator 2, pyrolysis oil gas enters after gas-liquid separation device 2, is contacted with cooling water.Dust and tar therein are with cold
But water is fallen, and the pyrolysis gas of acquisition is discharged by pyrolysis gas outlet 23, and pyrolysis gas feeding storage facilities are stored.The oil fallen
Aqueous mixtures are discharged by oil water mixture outlet 24.
It is preferred that, the wastewater outlet 25 of the present embodiment connects the cooling water inlet 22 of gas-liquid separation device.Discharge gas-liquid point
From the waste water of device 2, gas-liquid separation device 2 can be again introduced into as cooling water, recycling for water is realized, gas-liquid separation is adjusted
Water level in device 2.
Water Jiao's slurry preparation facilities 3 is mechanical agitation mixing arrangement, for the preparation of water Jiao's slurry, including semicoke entrance 31, oil
Aqueous mixtures entrance 32, dispersant entrance 33 and water Jiao's slurry outlet 34.The first semicoke outlet 103 of pyrolysis oven and the second semicoke go out
Mouth 104 connects the semicoke entrances 31 of water Jiao's slurry preparation facilities, the connection water Jiao's slurry of oil water mixture outlet 24 of gas-liquid separation device
The oil water mixture entrance 32 of preparation facilities.The semicoke that pyrolysis oven 1 is produced enters water Jiao's slurry preparation facilities 3, Xiang Shui after cooling
Addition dispersant in Jiao's slurry preparation facilities 3, the oil water mixture that gas-liquid separation device 2 is produced enters water Jiao's slurry preparation facilities 3, with
Semicoke and dispersant, are made water Jiao's slurry.The addition of dispersant is the 0.1%-1.0% of semicoke quality, and obtained water is burnt
The concentration of slurry is 60-70%.
Water Jiao's slurry gasification installation 4 is water and coke pulp gasifying furnace, for preparing synthesis gas using the burnt slurry of water.Water Jiao's slurry gasification installation
Including water Jiao's slurry entrance 41, oxygen rich gas entrance 42, syngas outlet 43, Quench agent entrance 44 and cinder outlet 47.Water Jiao's slurry
Entrance 41 and oxygen rich gas entrance 42 are arranged on the top of water Jiao's slurry gasification installation 4, so that water Jiao starches abundant with oxygen rich gas
Mixing.Water Jiao's slurry outlet 34 of water Jiao's slurry preparation facilities connects water Jiao's slurry entrance 41 of water Jiao's slurry gasification installation.Water Jiao's slurry is in water
Gasify in Jiao's slurry gasification installation 4,1150~1350 DEG C of gasification temperature, 2.5~10MPa of vapor pressure.The synthesis gas of acquisition is by closing
It is collected into gas outlet 43, cinder is discharged by cinder outlet 47.
It is preferred that, it is provided with cinder baffle plate 45 and cinder scraper plate 46 in the bottom of water Jiao's slurry gasification installation 4 inner chamber.Cinder baffle plate
45 are obliquely installed, and cinder baffle plate 45 is 30-75 ° with horizontal sextant angle, and cinder can be guided to cinder outlet 47.Cinder scraper plate 46
In the top of cinder baffle plate 45, the junction of cinder baffle plate 45 and the side wall of water Jiao's slurry gasification installation 4 is arranged on, rotation can be carried out and scraped
Except the cinder remained on cinder baffle plate 45.
The present embodiment prepares water Jiao's slurry by oil water mixture, water-filling Jiao's slurry gasification of going forward side by side, it is to avoid the discharge of waste water, enters
Tar therein and dust-laden are converted into the gas of high added value by one step, realize the recycling of dust-laden tar；By pyrolysis of coal with
The coupling of water Jiao's slurry gasification, realizes the efficient utilization of pyrolysis char, finally realizes brown coal grading sub-prime and utilize.
As shown in figure 3, on the other hand, the method that a kind of utilization said system of the present embodiment offer handles lignite, including with
Lower step：
The 1st, granularity≤1mm powdery brown coal is sent into the inner cylinder of pyrolysis oven, occurs pyrolytic reaction, pyrolysis temperature 750~800
DEG C, 6~9s of duration generates raw coke oven gas and semicoke, and raw coke oven gas carries part semicoke and enters air collecting chamber, another part half by filter opening
Burnt exported by the first semicoke is discharged.
2nd, raw coke oven gas and the semicoke of carrying enter after air collecting chamber and risen, and fall after semicoke and stop collision that part is carried,
Exported and discharged by the second semicoke；Raw coke oven gas carries out the catalytic pyrolysis of tar by Catalytic Layer, and catalytic pyrolysis temperature is 850~900
DEG C, pyrolysis oil gas is obtained, pyrolysis oil gas is further filtered by filter layer, discharged afterwards by pyrolysis oil gas vent.
3rd, pyrolysis oil gas is passed through after gas-liquid separation device, is passed through cooling water and cooling and dedusting is carried out to pyrolysis oil gas, obtain
Pyrolysis gas, oil water mixture and waste water.
4th, the first semicoke is exported and the second semicoke exports and water Jiao's slurry preparation facilities is sent into after the semicoke cooling of discharge, by oil
Aqueous mixtures feeding water Jiao's slurry preparation facilities, with dispersant, is made water Jiao's slurry；The addition of dispersant is semicoke quality
0.1~1%.
5th, by water Jiao's slurry feeding water Jiao's slurry gasification installation, gasified at 1150~1350 DEG C, vapor pressure 2.5~
10MPa, obtains synthesis gas and cinder.
It is preferred that, in step 3, using waste water as cooling water, it is passed through the cooling water inlet of gas-liquid separation device.
Embodiment 1
1st, granularity≤1mm will be crushed to after brown coal drying, powdery brown coal is sent into the inner cylinder of pyrolysis oven, occur pyrolysis anti-
Should, 750 DEG C of pyrolysis temperature, duration 9s generates raw coke oven gas and semicoke, and raw coke oven gas carries part semicoke and enters gas collection by filter opening
Chamber, another part semicoke is exported by the first semicoke and discharged.
2nd, raw coke oven gas and the semicoke of carrying enter after air collecting chamber and risen, and fall after semicoke and stop collision that part is carried,
Exported and discharged by the second semicoke；Raw coke oven gas carries out the catalytic pyrolysis of tar by Catalytic Layer, and catalytic pyrolysis temperature is 900 DEG C, is obtained
Oil gas must be pyrolyzed, pyrolysis oil gas is further filtered by filter layer, discharged afterwards by pyrolysis oil gas vent.
3rd, pyrolysis oil gas is passed through after gas-liquid separation device, is passed through cooling water and cooling and dedusting is carried out to pyrolysis oil gas, obtain
Pyrolysis gas, oil water mixture and waste water；Using waste water as cooling water, the cooling water inlet of gas-liquid separation device is passed through.
4th, the first semicoke is exported and the second semicoke exports and water Jiao's slurry preparation facilities is sent into after the semicoke cooling of discharge, by oil
Aqueous mixtures feeding water Jiao's slurry preparation facilities, with dispersant, is made water Jiao's slurry；The addition of dispersant is semicoke quality
0.5%, the concentration that water Jiao's slurry is made is 63%.
5th, by water Jiao's slurry feeding water Jiao's slurry gasification installation, gasified at 1200 DEG C, vapor pressure 3MPa obtains synthesis gas
And cinder.
Embodiment 2
1st, granularity≤1mm will be crushed to after brown coal drying, powdery brown coal is sent into the inner cylinder of pyrolysis oven, occur pyrolysis anti-
Should, 800 DEG C of pyrolysis temperature, duration 6s generates raw coke oven gas and semicoke, and raw coke oven gas carries part semicoke and enters gas collection by filter opening
Chamber, another part semicoke is exported by the first semicoke and discharged.
2nd, raw coke oven gas and the semicoke of carrying enter after air collecting chamber and risen, and fall after semicoke and stop collision that part is carried,
Exported and discharged by the second semicoke；Raw coke oven gas carries out the catalytic pyrolysis of tar by Catalytic Layer, and catalytic pyrolysis temperature is 850 DEG C, is obtained
Oil gas must be pyrolyzed, pyrolysis oil gas is further filtered by filter layer, discharged afterwards by pyrolysis oil gas vent.
3rd, pyrolysis oil gas is passed through after gas-liquid separation device, is passed through cooling water and cooling and dedusting is carried out to pyrolysis oil gas, obtain
Pyrolysis gas, oil water mixture and waste water；Using waste water as cooling water, the cooling water inlet of gas-liquid separation device is passed through.
4th, the first semicoke is exported and the second semicoke exports and water Jiao's slurry preparation facilities is sent into after the semicoke cooling of discharge, by oil
Aqueous mixtures feeding water Jiao's slurry preparation facilities, with dispersant, is made water Jiao's slurry；The addition of dispersant is semicoke quality
0.1%, the concentration that water Jiao's slurry is made is 60%.
5th, by water Jiao's slurry feeding water Jiao's slurry gasification installation, gasified at 1150 DEG C, vapor pressure 2.5MPa is synthesized
Gas and cinder.
Embodiment 3
1st, granularity≤1mm will be crushed to after brown coal drying, powdery brown coal is sent into the inner cylinder of pyrolysis oven, occur pyrolysis anti-
Should, 780 DEG C of pyrolysis temperature, duration 8s generates raw coke oven gas and semicoke, and raw coke oven gas carries part semicoke and enters gas collection by filter opening
Chamber, another part semicoke is exported by the first semicoke and discharged.
2nd, raw coke oven gas and the semicoke of carrying enter after air collecting chamber and risen, and fall after semicoke and stop collision that part is carried,
Exported and discharged by the second semicoke；Raw coke oven gas carries out the catalytic pyrolysis of tar by Catalytic Layer, and catalytic pyrolysis temperature is 870 DEG C, is obtained
Oil gas must be pyrolyzed, pyrolysis oil gas is further filtered by filter layer, discharged afterwards by pyrolysis oil gas vent.
3rd, pyrolysis oil gas is passed through after gas-liquid separation device, is passed through cooling water and cooling and dedusting is carried out to pyrolysis oil gas, obtain
Pyrolysis gas, oil water mixture and waste water；Using waste water as cooling water, the cooling water inlet of gas-liquid separation device is passed through.
4th, the first semicoke is exported and the second semicoke exports and water Jiao's slurry preparation facilities is sent into after the semicoke cooling of discharge, by oil
Aqueous mixtures feeding water Jiao's slurry preparation facilities, with dispersant, is made water Jiao's slurry；The addition of dispersant is semicoke quality
1%, the concentration that water Jiao's slurry is made is 70%.
5th, by water Jiao's slurry feeding water Jiao's slurry gasification installation, gasified at 1350 DEG C, vapor pressure 10MPa is synthesized
Gas and cinder.
It should be noted that each embodiment above by reference to described by accompanying drawing is only to illustrate rather than limitation originally
The scope of invention, it will be understood by those within the art that, it is right under the premise without departing from the spirit and scope of the present invention
Modification or equivalent substitution that the present invention is carried out, all should cover within the scope of the present invention.In addition, signified unless the context
Outside, the word occurred in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then any embodiment
All or part of can combine all or part of of any other embodiment to use.
Claims (10)
1. a kind of system of step-by-step processing lignite, it is characterised in that including：
Pyrolysis oven, the intracavitary of the pyrolysis oven, which is provided between inner cylinder, the furnace wall of the inner cylinder and pyrolysis oven, forms air collecting chamber, described
The fine coal entrance of pyrolysis oven is located at the top of the inner cylinder, and the lower sidewall of the inner cylinder, which is provided with filter opening, the air collecting chamber, to be set
There is baffle plate, the top of the baffle plate is Catalytic Layer, and the top of the air collecting chamber is provided with pyrolysis oil gas vent, the bottom of the inner cylinder
Provided with the outlet of the first semicoke, the bottom of the air collecting chamber is exported provided with the second semicoke；
Gas-liquid separation device, including pyrolysis oil gas entrance, cooling water inlet, pyrolysis gas outlet and oil water mixture outlet, it is described
The pyrolysis oil gas vent of pyrolysis oven connects the pyrolysis oil gas entrance of the gas-liquid separation device；
Water Jiao's slurry preparation facilities, including semicoke entrance, oil water mixture entrance, dispersant entrance and the outlet of water Jiao's slurry, the heat
The outlet of the first semicoke and the second semicoke for solving stove export the semicoke entrance of connection water Jiao slurry preparation facilities, the gas-liquid separation
The oil water mixture entrance of oil water mixture outlet connection water Jiao slurry preparation facilities of device；
Water Jiao's slurry gasification installation, including water Jiao's slurry entrance, syngas outlet and cinder outlet, the water of water Jiao slurry preparation facilities
Water Jiao's slurry entrance of Jiao's slurry outlet connection water Jiao slurry gasification installation.
2. system according to claim 1, it is characterised in that filter layer is provided with the air collecting chamber of the pyrolysis oven, described
Filter layer is located at the top of the Catalytic Layer.
3. system according to claim 1, it is characterised in that be provided with inclined in the bottom of the air collecting chamber of the pyrolysis oven
Deflector, the deflector is located at second semicoke and exported between the furnace wall of pyrolysis oven.
4. system according to claim 1, it is characterised in that the gas-liquid separation device also includes wastewater outlet, described
Wastewater outlet connects the cooling water inlet of the gas-liquid separation device.
5. system according to claim 1, it is characterised in that the intracavity bottom of water Jiao slurry gasification installation is provided with cinder
Baffle plate.
6. the method that a kind of any described system of utilization Claims 1 to 55 handles lignite, it is characterised in that including step：
A, the inner cylinder by powdery brown coal feeding pyrolysis oven, occur pyrolytic reaction, generation raw coke oven gas and semicoke, and the raw coke oven gas is carried
Part semicoke enters air collecting chamber by filter opening, and another part semicoke is exported by the first semicoke and discharged；
B, the raw coke oven gas and carrying semicoke, which enter after the air collecting chamber, to be risen, and the part semicoke is by baffle, by the
Two semicokes outlet discharge；The raw coke oven gas carries out the catalytic pyrolysis of tar by Catalytic Layer, obtains pyrolysis oil gas, the pyrolysis
Oil gas is discharged by pyrolysis oil gas vent；
C, by it is described pyrolysis oil gas be passed through after gas-liquid separation device, be passed through cooling water to it is described pyrolysis oil gas carry out cooling and dedusting,
Obtain pyrolysis gas and oil water mixture；
The burnt slurry preparation facilities of feeding water after D, the semicoke that first semicoke outlet and the second semicoke are exported into discharge are cooled down, by institute
State oil water mixture and send into water Jiao slurry preparation facilities, with dispersant, water Jiao's slurry is made；
E, by water Jiao's slurry feeding water Jiao's slurry gasification installation, gasified, obtain synthesis gas and cinder.
7. method according to claim 6, it is characterised in that in the step B, the catalytic pyrolysis temperature of tar is 850
~900 DEG C.
8. method according to claim 6, it is characterised in that the pyrolysis oil gas in the step B passes through filter layer, filtering
After discharge the pyrolysis oven.
9. method according to claim 6, it is characterised in that the step C also produces waste water, using the waste water as cold
But water, is passed through the cooling water inlet of the gas-liquid separation device.
10. method according to claim 6, it is characterised in that granularity≤1mm of the powdery brown coal in the step A.
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| CN201710602251.0A CN107325832A (en) | 2017-07-21 | 2017-07-21 | A kind of system and method for step-by-step processing lignite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107880944A (en) * | 2017-12-15 | 2018-04-06 | 浙江天禄环境科技有限公司 | A kind of brown coal hydrogasification reduction 3-stage dust-removal cooling, automatic gas-locking device |
| CN108485690A (en) * | 2018-05-29 | 2018-09-04 | 西北大学 | A kind of device and method of fine coal low temperature static pyrolysis extraction oil gas |
| CN108865306A (en) * | 2018-06-27 | 2018-11-23 | 新奥科技发展有限公司 | A kind of coke discharging and coupling technique is slurried |
-
2017
- 2017-07-21 CN CN201710602251.0A patent/CN107325832A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107880944A (en) * | 2017-12-15 | 2018-04-06 | 浙江天禄环境科技有限公司 | A kind of brown coal hydrogasification reduction 3-stage dust-removal cooling, automatic gas-locking device |
| CN107880944B (en) * | 2017-12-15 | 2024-03-19 | 浙江天禄环境科技有限公司 | Three-stage dedusting cooling and automatic air locking device for lignite gasification reduction |
| CN108485690A (en) * | 2018-05-29 | 2018-09-04 | 西北大学 | A kind of device and method of fine coal low temperature static pyrolysis extraction oil gas |
| CN108485690B (en) * | 2018-05-29 | 2024-01-16 | 西北大学 | Device and method for extracting oil gas by pulverized coal low-temperature static pyrolysis |
| CN108865306A (en) * | 2018-06-27 | 2018-11-23 | 新奥科技发展有限公司 | A kind of coke discharging and coupling technique is slurried |
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