CN105670665B - Pulverized coal pyrolysis device - Google Patents
Pulverized coal pyrolysis device Download PDFInfo
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- CN105670665B CN105670665B CN201610193156.5A CN201610193156A CN105670665B CN 105670665 B CN105670665 B CN 105670665B CN 201610193156 A CN201610193156 A CN 201610193156A CN 105670665 B CN105670665 B CN 105670665B
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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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Abstract
The present invention provides a kind of pulverized coal pyrolysis devices.The pulverized coal pyrolysis device includes: rotatable radiation bed, is provided with fine coal feed inlet, thermal medium inlet, thermal medium outlet, semicoke outlet and raw coke oven gas exhaust outlet；Hot-blast stove, is provided with semicoke import and hot wind exhaust outlet, and semicoke import is connected with the semicoke outlet in rotatable radiation bed；Deduster is provided with hot wind air inlet and purification wind exhaust outlet, and hot wind air inlet is connected with the hot wind exhaust outlet on hot-blast stove, and purification wind exhaust outlet is connected with the thermal medium inlet in rotatable radiation bed.In the device, the reluctant semicoke that pulverized coal pyrolysis generates directly is burnt in hot-blast stove, and the high-temperature flue gas that burning generates is back to the heat of rotatable radiation bed supply pulverized coal pyrolysis, this is conducive to the heat for making full use of semicoke, solves the problems, such as that semicoke processing is difficult.Meanwhile being purified using the high-temperature flue gas that deduster generates coal-char combustion, it is avoided that the poor problem of heat exchange efficiency caused by dustiness is excessively high.
Description
Technical field
The present invention relates to pulverized coal pyrolysis technical fields, in particular to a kind of pulverized coal pyrolysis device.
Background technique
Fine coal (also known as foam coal or low-order coal) is the necessary byproduct generated in progress of coal mining, especially modern
The use of performing comprehensive coal mining equipment more increases the yield of foam coal.And China is stronger to the dependence of coal resources, at present to fine coal
Development of resources and clean utilization are gradually paid attention to, this is to maintain China's sustainable economic development, guarantee the important of energy security developments
Behave.
In current published technology, such as coal oil, natural gas from coal, the technologies such as ammonia from coal, or using low temperature,
In mild high temperature coke, gas technology, the particle of the raw coal of use is substantially in 25mm or more, and for partial size less than 25mm's
Fine coal is then more intractable.Meanwhile existing pyrolytic technique processing capacity is small, is unable to satisfy big industrialized production, economic benefit and
The feature of environmental protection is poor, and social benefit is not significant.Above-mentioned various reasons cause fine coal bulk deposition, can not generate economic benefit, simultaneously
Cause new environmental issue.Therefore, the clean utilization of fine coal has become the problem of a urgent need to resolve.
The prior art utilizes the clean and effective of fine coal in the treatment process of fine coal, pulverized coal pyrolysis technique is able to achieve,
Its thermal decomposition product has tar, is pyrolyzed coal gas, high heating value semicoke etc..Currently known there are many coal pyrolysis technologies, as internal heat type is straight
Vertical furnace, solid heat carrier rapid pyrolysis technology, circulating fluidized bed boiler and pyrolysis coupling technology, indirect heating pyrolytic technique etc.,
However, the heating process of each technology has some disadvantages:
Solid heat carrier rapid pyrolysis technology belongs to typical pyrolytic technique, most gets up early in development abroad, domestic Dalian
Polytechnics is studied and is promoted to it.Common heat carrier has Ceramic Balls, quartz sand, semicoke etc..Heat carrier heats main work
Skill is mainly as follows: then the coal gas come out from reactor is transmitted back to burning in hot-blast stove, passes through the flue gas of generation after purification
Heat carrier is heated, generally by flue gas heat-exchange unit, fluidized bed or riser are heated, to carry out heat to fine coal
Solution.This heating technique system complex, complicated for operation, energy consumption is high, while heated by gas necessarily wastes high heating value gas.And use half
The Cyclone efficiency of high-temperature flue gas heating, flue gas ash and heat carrier separation is low, and ash is easy to cause to enter raw coke oven gas.
Gas directly heats in technology most typically vertical heater technology, and project is more at home at present.Its main technique
As follows: the purified gas and air come out from vertical heater occurs strong redox reaction and releases heat, and the heat transfer is to powder
After coal, fine coal is heated to 500 DEG C and is pyrolyzed.After the gas mixing that the flue gas of generation and pyrolysis generate, flow up, with powder
Coal anti-phase and go.It in raw coke oven gas uphill process, exchanges heat with the fine coal of decline, to transfer heat to fine coal.In gas
Exit, raw gas temperature are generally 100 DEG C or so.The type of furnace production capacity is limited by heating process, i.e., by purified gas with
The high-temperature flue gas that air generates heats coal, necessarily will cause heating unevenness, while the calorific value of gas generated is low, Bu Nengzuo
For industrial chemicals use, it is only capable of using as low calorie fuels.
Circulating fluidized bed boiler and pyrolysis coupling systems technology have large-scale experiment project, but substantially without industrialization promotion.
It mainly uses high-temperature boiler coal ash to heat fine coal, and high temperature coal ash is quickly mixed with fine coal in reactor, heat transfer,
Complete pyrolytic reaction.The technology is similar with high-temperature heat carrier technology, but generally requires and build pyrolysis plant in power plant or have big
Near type Fluidized Bed Boiler, restriction technologies are promoted.
Chinese patent CN201010153412.0 discloses a kind of horizontally-arranged revolution retort thermal cracking raw coal preparation of external-heat
The method of semi-coke, revolution charing stove heating are burnt in the combustion chamber using coal gas after purification.This technology generates coal gas
Calorific value is high, however the high-temperature flue gas generated with high heating value gas is heated to revolution retort, less economical.
In short, current pulverized coal pyrolysis technology have the defects that it is certain.Based on this, it is necessary to provide a kind of heat exchange efficiency
Higher, equipment is simple and the higher pulverized coal pyrolysis device of economy.
Summary of the invention
The main purpose of the present invention is to provide a kind of pulverized coal pyrolysis devices, high in existing pulverized coal pyrolysis technology to solve
Heat exchange efficiency, equipment simplification and high economy are difficult to the problem of getting both.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of pulverized coal pyrolysis device comprising:
Rotatable radiation bed is provided with fine coal feed inlet, thermal medium inlet, thermal medium outlet, semicoke outlet and waste coal in rotatable radiation bed
Gas exhaust outlet；Hot-blast stove is provided with semicoke import and hot wind exhaust outlet on hot-blast stove, and half in semicoke import and rotatable radiation bed
Coke outlet is connected；And deduster, hot wind air inlet and purification wind exhaust outlet, hot wind air inlet and heat are provided on deduster
Hot wind exhaust outlet on wind furnace is connected, and purification wind exhaust outlet is connected with the thermal medium inlet in rotatable radiation bed.
Further, above-mentioned hot-blast stove includes: combustion chamber, be provided on combustion chamber burner, igniter, combustion-supporting wind inlet and
Semicoke import；And expansion chamber, expansion chamber and combustion chamber, flue-dust retainer and hot wind exhaust outlet are provided on expansion chamber.
Further, above-mentioned combustion chamber is connected with the bottom of expansion chamber, and hot wind exhaust outlet is located at the top of expansion chamber,
Flue-dust retainer is located at the bottom of expansion chamber；Or be connected at the top of combustion chamber and expansion chamber, one or more is provided in expansion chamber
The air-guiding aisle of bending is formed between the inner wall of a wind deflector, wind deflector and expansion chamber, and hot wind exhaust outlet is located at expansion chamber
Side far from combustion chamber.
Further, multiple wind deflectors are provided in above-mentioned expansion chamber, wind deflector has connecting pin and free end, multiple gears
Aerofoil includes the second wind deflector on multiple first wind deflectors being arranged on the roof of expansion chamber and the bottom wall that expansion chamber is arranged in,
The second wind deflector is provided between two adjacent the first wind deflectors, and the first wind deflector and the second wind deflector are flowed in air-flow
It is overlapped on direction, so that the air-guiding aisle of bending is in W type.
Further, above-mentioned rotatable radiation bed includes rotatable first shell and the radiant tube in first shell,
The import of radiant tube is connected with thermal medium inlet, and the outlet of radiant tube is connected with thermal medium outlet, fine coal feed inlet, semicoke
Outlet and raw coke oven gas exhaust outlet are respectively positioned in first shell.
Further, the first shell of above-mentioned rotatable radiation bed includes feed end and discharge end, and the setting of fine coal feed inlet exists
On feed end, semicoke outlet and raw coke oven gas exhaust outlet is arranged on discharge end, rotatable radiation bed along feed end to discharge end to
Under be obliquely installed.
Further, above-mentioned deduster is grain bed deduster or too cotton filter collector.
Further, above-mentioned deduster is grain bed deduster, and grain bed deduster includes: grain bed body of deduster,
Grain bed body of deduster includes second shell and the multiple layers of filters inside second shell, is set on the inner wall of second shell
It is equipped with insulating layer, hot wind air inlet is located at the top of second shell, and purification wind exhaust outlet is located on the lower sides of second shell；
And blowback air feeding mechanism, blowback air feeding mechanism are used to supply blowback to the inside of the second shell of grain bed body of deduster
Gas.
Further, it is additionally provided with thermal medium air outlet pipeline in above-mentioned rotatable radiation bed, be arranged on thermal medium air outlet pipeline
There is air inlet, air inlet is connected with thermal medium outlet；Be additionally provided on hot-blast stove adjust wind air inlet, adjust wind air inlet and
Thermal medium air outlet pipeline is connected.
Further, in above-mentioned hot-blast stove, mixing chamber, mixing chamber are additionally provided on the access between combustion chamber and expansion chamber
On be provided with adjust wind air inlet.
Further, the first blower is provided on the flow path between above-mentioned thermal medium air outlet pipeline and adjusting wind air inlet；
Thermal medium air outlet pipeline also has air outlet, and the second blower is connected at air outlet.
It is the reluctant semicoke by pulverized coal pyrolysis generation directly in hot wind in pulverized coal pyrolysis device provided by the invention
It burns in furnace, and the high-temperature flue gas that burning generates is back to the heat of rotatable radiation bed supply pulverized coal pyrolysis.It is such
Set-up mode is conducive to make full use of the heat of semicoke, solves the problems, such as that semicoke processing is difficult.Meanwhile semicoke is fired using deduster
It burns the high-temperature flue gas generated to be purified, can be avoided the poor problem of the excessively high caused heat exchange efficiency of dustiness.In addition, the powder
The equipment of pyrolysis of coal device is simple, energy conservation and environmental protection, good economy performance.In short, the above-mentioned pulverized coal pyrolysis device of the bright offer of this law, is changed
The thermal efficiency is high, equipment is simple and good economy performance, is highly suitable for the pyrolysis processing of fine coal, for the Poly-generation work for realizing coal, oil, gas
Skill creates condition.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows pulverized coal pyrolysis schematic device according to an embodiment of the present；
Fig. 2 shows the structural schematic diagrams of middle hot-blast stove according to an embodiment of the present invention；
Fig. 3 shows the structural schematic diagram of hot-blast stove in another embodiment according to the present invention；
Fig. 4 shows the structural schematic diagram of hot-blast stove in another embodiment according to the present invention；And
Fig. 5 shows the structural schematic diagram of the combustion chamber of hot-blast stove according to an embodiment of the present invention.
Wherein, the above drawings include the following reference numerals:
10, rotatable radiation bed；101, fine coal feed inlet；102, thermal medium inlet；103, thermal medium outlet；104, semicoke goes out
Mouthful；105, raw coke oven gas exhaust outlet；20, hot-blast stove；201, semicoke import；202, hot wind exhaust outlet；203, wind air inlet is adjusted；
21, combustion chamber；211, burner；212, igniter；213, combustion-supporting wind inlet；214, slag-drip opening；22, expansion chamber；221, flue-dust retainer；
222, wind deflector；30, deduster；301, hot wind air inlet；302, wind exhaust outlet is purified；303, the second ash discharging hole；11, the first wind
Machine；12, the second blower.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
There are high heat exchange efficiency, equipment to simplify as described in background technology part, in existing pulverized coal pyrolysis technology
And high economy is difficult to the problem of getting both.In order to solve this problem, the present invention provides a kind of pulverized coal pyrolysis device, such as Fig. 1
It is shown comprising rotatable radiation bed 10, hot-blast stove 20 and deduster 30；Fine coal feed inlet is provided in rotatable radiation bed 10
101, thermal medium inlet 102, thermal medium outlet 103, semicoke outlet 104 and raw coke oven gas exhaust outlet 105；It is provided on hot-blast stove 20
Semicoke outlet 104 in semicoke import 201 and hot wind exhaust outlet 202, semicoke import 201 and rotatable radiation bed 10 is connected；It removes
Hot wind air inlet 301 and purification wind exhaust outlet 302, the hot wind on hot wind air inlet 301 and hot-blast stove 20 are provided on dirt device 30
Exhaust outlet 202 is connected, and purification wind exhaust outlet 302 is connected with the thermal medium inlet 102 in rotatable radiation bed 10.
In above-mentioned pulverized coal pyrolysis device provided by the invention, including rotatable radiation bed 10, hot-blast stove 20 and deduster 30.
After the semicoke that wherein pulverized coal pyrolysis generates in rotatable radiation bed 10 comes out from semicoke outlet 104, enter in hot-blast stove 20 directly
Carry out coal-char combustion.After deduster 30, dustiness therein can substantially be subtracted the high-temperature flue gas that coal-char combustion generates
It is few.From deduster 30 purification wind exhaust outlet 302 come out cleaning high-temp flue gas again entrance rotatable radiation bed 10 thermal medium into
Mouth 102, provides heat for the pyrolysis of fine coal.
Compared to gasified to semicoke, gas recuperation of heat of gasifying, gasification gas burning, combustion gas supply pyrolysis complicated procedures of forming
For, it is the reluctant semicoke by pulverized coal pyrolysis generation directly in hot-blast stove in the above-mentioned pulverized coal pyrolysis device of the present invention
It burns in 20, and the high-temperature flue gas that burning generates is back to the heat that rotatable radiation bed 10 supplies pulverized coal pyrolysis.In this way
Set-up mode be conducive to make full use of the heat of semicoke, solve the problems, such as that semicoke processing is difficult.Meanwhile using deduster 30 to half
The high-temperature flue gas that coke burning generates is purified, and can be avoided the poor problem of the excessively high caused heat exchange efficiency of dustiness.In addition,
The equipment of the pulverized coal pyrolysis device is simple, energy conservation and environmental protection, good economy performance.In short, the above-mentioned pulverized coal pyrolysis device of the bright offer of this law,
Its heat exchange efficiency is high, equipment is simple and good economy performance, is highly suitable for the pyrolysis processing of fine coal, for realize coal, oil, gas it is multi-joint
Production. art creates condition.
It is preferred that above-mentioned hot-blast stove 20 of the invention be burning 2mm or less semicoke foam, burning semi-coke powder or burning 25mm with
The hot-blast stove of lower coke breeze.In a kind of preferred embodiment, as shown in Figures 2 and 3, hot-blast stove 20 includes combustion chamber 21 and expansion chamber
22；Burner 211, igniter 212, combustion-supporting wind inlet 213 and semicoke import 201 are provided on combustion chamber 21；Expansion chamber 22 and combustion
It burns room 21 to be connected, flue-dust retainer 221 and hot wind exhaust outlet 202 is provided on expansion chamber 22.Combustion chamber is set in hot-blast stove 20
21, reacting environment can be provided for coal-char combustion.And expansion chamber 22 is set, can make coal-char combustion generate high-temperature flue gas into
A part of particle sedimentation is first carried out before entering subsequent deduster 30, the biggish particle of partial size in high-temperature flue gas is removed, thus favorably
In further decreasing the dustiness in high-temperature flue gas, the heat exchange efficiency in rotatable radiation bed 10 is improved.
In the actual operation process, specific technique can be such that 25mm or less fine coal is sent to by feed system and turn
In formula radiation bed 10, in the rotation of rotatable radiation bed, fine coal moves forward in kiln, in moving process and from hot-blast stove 20
High-temperature flue gas gradually exchange heat, the temperature of fine coal gradually rises, when coal is heated to 500~550 DEG C, fine coal complete pyrolysis
Reaction, generates 550~630 DEG C of semicokes and 500 DEG C or so of raw coke oven gas (including tar steam and coal gas), and raw coke oven gas is from raw coke oven gas
Exhaust outlet 105 flows out, and high-temperature semi-coke falls from semicoke outlet 104.
800~1000 DEG C of the high-temperature flue gas dustiness that hot-blast stove 20 comes out is bigger, dustiness about 5~10g/Nm3, needs
Its dustiness is reduced to clean gas standard.Thus, high-temperature flue gas enters directly into deduster after coming out from hot-blast stove 20
In 30, after filter layer, dust is filtered, clean flue gas comes out from deduster 30 after collecting and enters directly into rotatable radiation
In bed 10, exchange heat.
In a kind of preferred embodiment, as shown in Fig. 2, combustion chamber 21 is connected with the bottom of expansion chamber 22, and hot wind
Exhaust outlet 202 is located at the top of expansion chamber 22, and flue-dust retainer 221 is located at the bottom of expansion chamber 22.In such horizontal hot air furnace, from
The high-temperature flue gas generated in combustion chamber 21 can enter from the bottom of expansion chamber 22, run up in rotation direction to 22 top of expansion chamber
Hot wind exhaust outlet 202.During rotation direction is run up, the bulky grain in high-temperature flue gas can be easier to fall, thus
The purifying rate of high-temperature flue gas can be further increased.Alternatively, as shown in Figure 3 and Figure 4, the top phase of combustion chamber 21 and expansion chamber 22
It is connected to, is provided with one or more wind deflectors 222 in expansion chamber 22, is formed between wind deflector 222 and the inner wall of expansion chamber 22 curved
The air-guiding aisle of folding, and hot wind exhaust outlet 202 is located at the side of the separate combustion chamber 21 of expansion chamber 22.Such set-up mode
In, using the air-guiding aisle for forming bending between wind deflector 222 and the inner wall of expansion chamber 22, can make to generate in combustion chamber 21
High-temperature flue gas song in expansion chamber 22 is forwarded to hot wind exhaust outlet 202, marches forward and the barrier effect of wind deflector 222 in song
Under, being more advantageous to makes the bulky grain in high-temperature flue gas settle down, and to further decrease the dustiness in flue gas, improves subsequent turn
The heat exchange efficiency of formula radiation bed 10.Preferably, hot-blast stove shown in Fig. 4 is for burning 25mm or less coke breeze, in Fig. 2 and Fig. 3
Shown in hot-blast stove for the 2mm that burns burnt foam below or coke powder.
In a kind of preferred embodiment, as shown in figure 4, being provided with multiple wind deflectors 222, wind deflector in expansion chamber 22
222 have connecting pin and free end, and multiple wind deflectors 222 include multiple first wind deflectors being arranged on the roof of expansion chamber 22
And the second wind deflector on the bottom wall of expansion chamber 22 is set, it is provided with the second wind deflector between two adjacent the first wind deflectors,
And the first wind deflector and the second wind deflector overlap in air current flow direction, so that the air-guiding aisle of bending is in W type.This
The set-up mode of sample can further decrease the dustiness in high-temperature flue gas, improve the heat exchange efficiency of subsequent rotatable radiation bed 10.
In a kind of preferred embodiment, the bottom of combustion chamber 21 is provided with one or more slag-drip openings 214, expansion chamber 22
221 bottom of flue-dust retainer be provided with one or more first ash discharging holes.
In a preferred embodiment, as shown in figure 4, can be set below the semicoke import 201 in combustion chamber 21
Chain row is set, to accept the semicoke entered in semicoke import 201, to improve the combustion rate of semicoke.
In addition to this, multiple burners 211 and matched multiple igniters 212 can be set in combustion chamber 21, help
Fire wind inlet 213 and semicoke import 201.And the distribution of multiple burners 211 can be different directions, such as can be along combustion chamber
21 arranged radially or axial alignment.The flame direction of specific burner 211 can also be adjusted, such as radial flame burning
Or tangential flame burning as shown in Figure 5.
In a kind of preferred embodiment, rotatable radiation bed 10 includes rotatable first shell and is located in first shell
Radiant tube, the import of radiant tube is connected with thermal medium inlet 102, and the outlet of radiant tube is connected with thermal medium outlet 103,
Fine coal feed inlet 101, semicoke outlet 104 and raw coke oven gas exhaust outlet 105 are respectively positioned in first shell.Utilize the rotatable radiation bed 10
Pulverized coal pyrolysis is carried out, purified high-temperature flue gas is walked inside radiant tube, and fine coal is indirect inside the first shell outside radiant tube
Heating.Indirect heating, especially multiple groups radiant tube are carried out using radiant tube and carries out indirect heating, and fine coal can be made more fully hot
The calorific value of gas of solution, generation is high, and semicoke quality is stablized, and tar taste is higher.Specific radiant tube set-up mode can be utilization
Kiln hood and the setting of the rforated plate bracing of kiln tail.
In a kind of preferred embodiment, the first shell of rotatable radiation bed 10 includes feed end and discharge end, fine coal into
Material mouth 101 is arranged on feed end, and semicoke outlet 104 and raw coke oven gas exhaust outlet 105 are arranged on discharge end, rotatable radiation bed
10 tilt down setting along feed end to discharge end.Such set-up mode, which is more advantageous to, is pyrolyzed fine coal sufficiently.Preferably, into
The gradient for expecting end to discharge end is 1~5 °.
In a kind of preferred embodiment, deduster 30 is grain bed deduster or too cotton filter collector.Grain bed removes
The efficiency of dust collection of dirt device or too cotton filter collector is higher, can further decrease the dustiness in high-temperature flue gas, improves rotatable
The heat exchange efficiency of radiation bed 10.Preferably, grain bed deduster or 1300 DEG C of filtrate heatproof or more too in cotton filter collector,
Make the dustiness of purified high-temperature flue gas lower than 30mg/Nm3。
In a kind of preferred embodiment, grain bed deduster includes grain bed body of deduster and blowback air supply dress
It sets；Grain bed body of deduster includes second shell and the multiple layers of filters inside second shell, the inner wall of second shell
On be provided with insulating layer, hot wind air inlet 301 is located at the top of second shell, and purification wind exhaust outlet 302 is located at second shell
On lower sides；Blowback air feeding mechanism is used to supply blowback air to the inside of the second shell of grain bed body of deduster.It utilizes
Insulating layer can prevent high-temperature flue gas from entering deduster 30 and carry out purified temperature to keeping the temperature inside grain bed deduster
It is greatly reduced, to be further ensured that the heat supply of contrarotating radiation bed 10.Meanwhile setting blowback air feeding mechanism can incite somebody to action
The particle blowback filtered down in grain bed body of deduster is to second shell bottom, to improve the dedusting effect of grain bed deduster
Fruit.
Too the structure of cotton filter collector is similar to bag filter structure, and inside is coated with high-temperature-resistant thermal-insulation material.
In a kind of preferred embodiment, in grain bed body of deduster, second shell below each layer of filter layer
It is provided with one or more blowback air air inlets on side wall, is provided with blowback air exhaust outlet, blowback on blowback air feeding mechanism
Gas exhaust outlet is connected with the blowback air air inlet in grain bed body of deduster.Such setting can further increase particle
The dust removing effects of bed deduster.Specific blowback air can use flue gas blowback or compressed air blowback.
It is highly preferred that the bottom of second shell is provided with the second ash discharging hole 303.It is carried out with the particle to get off to blowback regular
Ash discharge.
In a kind of preferred embodiment, thermal medium air outlet pipeline, thermal medium outlet air are additionally provided in rotatable radiation bed 10
Air inlet is provided on pipeline, air inlet is connected with thermal medium outlet 103；It is additionally provided on hot-blast stove 20 and adjusts wind air inlet
203, it adjusts wind air inlet 203 and is connected with thermal medium air outlet pipeline.It is come out from the thermal medium outlet 103 of rotatable radiation bed 10
Partial fume is entered in hot-blast stove 20 by adjusting wind air inlet 203, can adjust the temperature of high-temperature flue gas to OK range,
And the oxygen content in flue gas is adjusted to safer range.In addition, going out from the thermal medium outlet 103 of rotatable radiation bed 10
The partial fume come, which is recycled in hot-blast stove 20, adjusts flue gas, also helps the utilization rate for further increasing flue gas heat.
In a kind of preferred embodiment, in hot-blast stove 20, also set up on the access between combustion chamber 21 and expansion chamber 22
There is mixing chamber, is provided on mixing chamber and adjusts wind air inlet 203.It is arranged on access between combustion chamber 21 and expansion chamber 22 mixed
Room is closed, high-temperature flue gas can be made to be mixed with the adjusting wind that wind air inlet 203 enters is adjusted, to further increase equipment
Safety.
In a kind of preferred embodiment, thermal medium air outlet pipeline and adjusts and be provided with the on flow path between wind air inlet
One blower 11.It is preferred that first blower 11 is horizontal type structure, it 250 DEG C~350 DEG C of blower heatproof, will be from the heat of rotatable radiation bed 10
The partial fume that media outlet 103 comes out is sent to progress hot wind temperature adjustment in hot-blast stove 20, and flue-gas temperature is down to 800~1000
℃。
In a kind of preferred embodiment, thermal medium air outlet pipeline also has air outlet, and the second wind is connected at air outlet
Machine 12.
High-temperature flue gas in system can be under the driving of the negative pressure of the second blower 12, in each equipment internal flow.On and
It states in setting, the flue gas come out from the thermal medium outlet 103 of rotatable radiation bed 10 is divided into two-way, all the way in the drive of the first blower 11
It is entered under dynamic and carries out temperature adjustment in hot-blast stove 20, another way discharge purification.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements: in the present invention
In the pulverized coal pyrolysis device stated, be by pulverized coal pyrolysis generate reluctant semicoke directly burn in hot-blast stove, and
The high-temperature flue gas that burning generates is returned to the heat of rotatable radiation bed supply pulverized coal pyrolysis.Such set-up mode is conducive to sufficiently
Using the heat of semicoke, solve the problems, such as that semicoke processing is difficult.Meanwhile the high-temperature flue gas that coal-char combustion is generated using deduster into
Row purification can be avoided the poor problem of the excessively high caused heat exchange efficiency of dustiness.In addition, the equipment letter of the pulverized coal pyrolysis device
Single, energy conservation and environmental protection, good economy performance.In short, the above-mentioned pulverized coal pyrolysis device of the bright offer of this law, heat exchange efficiency is high, equipment is simple
And good economy performance, it is highly suitable for the pyrolysis processing of fine coal, the multi-production process for realization coal, oil, gas creates condition.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of pulverized coal pyrolysis device characterized by comprising
Rotatable radiation bed (10), be provided on the rotatable radiation bed (10) fine coal feed inlet (101), thermal medium inlet (102),
Thermal medium outlet (103), semicoke outlet (104) and raw coke oven gas exhaust outlet (105)；It is additionally provided on the rotatable radiation bed (10)
Thermal medium air outlet pipeline is provided with air inlet, the air inlet and the thermal medium outlet on the thermal medium air outlet pipeline
(103) it is connected；
Hot-blast stove (20) is provided with semicoke import (201) and hot wind exhaust outlet (202), the semicoke on the hot-blast stove (20)
Import (201) is connected with the semicoke outlet (104) on the rotatable radiation bed (10), and the hot-blast stove (20) includes combustion
Room (21) and expansion chamber (22) are burnt, is provided with burner (211), igniter (212), combustion-supporting wind inlet on the combustion chamber (21)
(213) and the semicoke import (201), the expansion chamber (22) are connected with the combustion chamber (21), the expansion chamber (22)
On be provided with flue-dust retainer (221) and the hot wind exhaust outlet (202)；The top of the combustion chamber (21) and the expansion chamber (22)
Portion is connected, and is provided with one or more wind deflectors (222) in the expansion chamber (22), the wind deflector (222) and described heavy
The air-guiding aisle that bending is formed between the inner wall of room (22) drops, and the hot wind exhaust outlet (202) is located at the expansion chamber (22)
Far from the combustion chamber (21) side；In the hot-blast stove (20), the combustion chamber (21) and the expansion chamber (22) it
Between access on be additionally provided with mixing chamber, be provided on the mixing chamber adjust wind air inlet (203)；On the hot-blast stove (20)
It is additionally provided with and adjusts wind air inlet (203), the adjusting wind air inlet (203) is connected with the thermal medium air outlet pipeline；Institute
It states and is provided with chain row below the semicoke import (201) in combustion chamber (21), entered with accepting in the semicoke import (201)
Semicoke；And
Deduster (30) is provided with hot wind air inlet (301) and purification wind exhaust outlet (302) on the deduster (30), described
Hot wind air inlet (301) is connected with the hot wind exhaust outlet (202) on the hot-blast stove (20), the purification wind exhaust outlet
(302) it is connected with the thermal medium inlet (102) on the rotatable radiation bed (10).
2. pulverized coal pyrolysis device according to claim 1, which is characterized in that be provided with multiple institutes in the expansion chamber (22)
It states wind deflector (222), the wind deflector (222) has connecting pin and free end, and multiple wind deflectors (222) include that setting exists
Multiple first wind deflectors on the roof of the expansion chamber (22) and it is arranged on the bottom wall of the expansion chamber (22) second and keeps out the wind
Plate, is provided with second wind deflector between first wind deflector of adjacent two, and first wind deflector and described
Second wind deflector overlaps in air current flow direction, so that the air-guiding aisle of the bending is in W type.
3. pulverized coal pyrolysis device according to claim 1 or 2, which is characterized in that the rotatable radiation bed (10) includes can
The first shell of rotation and the radiant tube in the first shell, the import of the radiant tube and the thermal medium inlet
(102) it is connected, the outlet of the radiant tube is connected with the thermal medium outlet (103), the fine coal feed inlet (101),
The semicoke outlet (104) and the raw coke oven gas exhaust outlet (105) are respectively positioned in the first shell.
4. pulverized coal pyrolysis device according to claim 3, which is characterized in that described the first of the rotatable radiation bed (10)
Shell includes feed end and discharge end, and the fine coal feed inlet (101) is arranged on the feed end, the semicoke outlet
(104) it is arranged on the discharge end with the raw coke oven gas exhaust outlet (105), the rotatable radiation bed (10) is along the charging
End to the discharge end tilts down setting.
5. pulverized coal pyrolysis device according to claim 1 or 2, which is characterized in that the deduster (30) is removed for grain bed
Dirt device or too cotton filter collector.
6. pulverized coal pyrolysis device according to claim 5, which is characterized in that the deduster (30) is that the grain bed removes
Dirt device, the grain bed deduster include:
Grain bed body of deduster, the grain bed body of deduster include second shell and inside the second shell
Multiple layers of filters is provided with insulating layer on the inner wall of the second shell, and the hot wind air inlet (301) is located at the second shell
The top of body, purification wind exhaust outlet (302) are located on the lower sides of the second shell；And
Blowback air feeding mechanism, the blowback air feeding mechanism are used for the second shell to the grain bed body of deduster
Inside supply blowback air.
7. pulverized coal pyrolysis device according to claim 1 or 2, which is characterized in that the thermal medium air outlet pipeline and described
It adjusts and is provided with the first blower (11) on the flow path between wind air inlet；The thermal medium air outlet pipeline also has air outlet, institute
It states and is connected with the second blower (12) at air outlet.
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| CN114561224A (en) * | 2022-03-11 | 2022-05-31 | 南阳三鑫诚达化工科技有限公司 | Novel process for pyrolysis, classification, quality-grading and gradient utilization of low-rank coal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101063593A (en) * | 2006-04-26 | 2007-10-31 | 霍镰泉 | Method for reducing coal consumption of hot-air stove |
| CN105331377A (en) * | 2015-11-16 | 2016-02-17 | 北京神雾环境能源科技集团股份有限公司 | Coal pyrolysis method and system |
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| CN104342179B (en) * | 2013-08-01 | 2017-10-24 | 胜帮科技股份有限公司 | Hybrid pyrolysis of coal method |
| CN205653409U (en) * | 2016-03-29 | 2016-10-19 | 新疆广汇中化能源技术开发有限公司 | Powder coal pyrolysis device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101063593A (en) * | 2006-04-26 | 2007-10-31 | 霍镰泉 | Method for reducing coal consumption of hot-air stove |
| CN105331377A (en) * | 2015-11-16 | 2016-02-17 | 北京神雾环境能源科技集团股份有限公司 | Coal pyrolysis method and system |
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