CN106701128A - Regenerative pyrolytic reaction system and method for powdered coal - Google Patents
Regenerative pyrolytic reaction system and method for powdered coal Download PDFInfo
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- CN106701128A CN106701128A CN201611166336.0A CN201611166336A CN106701128A CN 106701128 A CN106701128 A CN 106701128A CN 201611166336 A CN201611166336 A CN 201611166336A CN 106701128 A CN106701128 A CN 106701128A
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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
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
- C10B21/16—Regulating and controlling the combustion by controlling or varying the openings between the heating flues and the regenerator flues
-
- 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
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
- C10B21/18—Recirculating the flue gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
- C10K1/046—Reducing the tar content
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention belongs to the technical field of coal pyrolysis, and particularly relates to a regenerative pyrolytic reaction system and method for powdered coal. The method and system are used for extracting resources, such as oil, gas and carbon, in low-rank coal. The system comprises a hopper, a pneumatic feeding system, a regenerative pyrolytic reactor, a cold slag machine, a condensation blower system and a purification system. The pneumatic feeding system is connected with the hopper which is connected with a feeding inlet; the regenerative pyrolytic reactor comprises a pyrolysis chamber, a double-regenerative radiant tube system, the feeding inlet, a discharging outlet and a pyrolysis gas export; the condensation blower system is arranged between the regenerative pyrolytic reactor and the purification system, the inlet of the condensation blower system is connected with the pyrolysis gas export formed in the side portion of the lower side of the condensation blower system. The reaction system is provided with multiple layers of radiant tubes, temperature is convenient to adjust, convenience is brought to the achievement of a pyrolyzed target product, the pyrolytic technology is simple, and the system is high in reliability.
Description
Technical field
The invention belongs to pyrolysis of coal technical field, and in particular to a kind of fine coal heat storage type pyrolysis reaction system and side
Method, for extracting the oil in low-order coal, gas and carbon resource.
Background technology
Middle low-order coal accounting in coal in China surpasses 55%, and annual substantial amounts of low-order coal is all directly as generating or boiler combustion
Material directly burns, and wastes substantial amounts of petroleum resources, low in particular with the mechanization degree more and more higher of technology
Rank fine coal yield is huge, but is not all utilized effectively.If number of patent application is the document of CN204490806U, one is disclosed
Kind of pulverized coal pyrolysis reactor, including high-temperature reactor, the high-temperature reactor include inner cylinder and outer barrel, the inner cylinder and described outer
Hot media channel is formed between cylinder, the inner cylinder front end sets material inlet, the interior tube rear end arranging thing material outlet and gas
Outlet, the outer barrel two ends set thermal medium outlet and thermal medium entrance, the thermal medium outlet, thermal medium entrance and the heat
Medium channel is connected, and sets transmission auger in the inner cylinder along its length, and described transmission auger one end sets actuating unit,
The outer barrel outside sets heat-insulation layer, is set on the transmission auger and stirs bar, takes drum-type pyrolysis reactor, there is high temperature
Mechanical movement and sealing problem.Therefore how to design that a kind of pyrolytic process is simple, system reliability is strong, temperature control is accurate and product is easy
The pyrolysis of coal system and method for adjustment turns into the problem of this area urgent need to resolve.
The content of the invention
The present invention is in view of the shortcomings of the prior art, it is proposed that a kind of fine coal heat storage type pyrolysis reaction system and method, this is anti-
System arranging multiplayer radiant tube is answered, temperature adjustment is convenient, be advantageously implemented pyrolysis target product, pyrolytic process is simple, and system reliability
Property is strong.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
The present invention proposes a kind of fine coal heat storage type pyrolysis reaction system, and the system includes：Hopper；Strength feed system, it is described
Strength feed system is connected with the hopper；Heat storage type pyrolysis reactor, including：Pyrolysis chamber, double heat storage type radiate guard system, enter
Material mouth, discharging opening and pyrolysis gas export mouth, wherein, the double heat storage type radiation guard system includes：Radiant tube, heat storage, combustion gas
Burner, air blower, flue gas blower fan, air line, flue gas pipeline, burning line and reversal valve, wherein, the radiant tube is along institute
The short transverse multi-tier arrangement of heat storage type pyrolysis reactor is stated inside the pyrolysis chamber, every layer has many cloth in the horizontal direction
The radiant tube put, the two ends of the radiant tube are fixedly connected with the side wall of the pyrolysis chamber respectively；Described heat storage or so
Symmetrical is arranged on the outer wall of the heat storage type pyrolysis reactor, and the heat storage center is provided with the fuel burner nozzle, is used for
Make the combustion gas being passed through and air burning, produce flue gas；The side wall of the heat storage type pyrolysis reactor outer wall and the pyrolysis chamber it
Between form airtight passage, the airtight passage is connected with the radiant tube, for by the fuel burner nozzle burning produce flue gas
It is passed through in the radiant tube, and flue gas is directly heated the pyrolysis chamber by pyrolysis chamber side wall；The air blower, flue gas wind
Machine is connected through the air line, flue gas pipeline with the reversal valve respectively, the reversal valve and the burning line respectively with
Fuel burner nozzle connection, also, the flue gas blower fan is connected with the strength feed system, for by the heat storage type pyrolysis
Reactor discharge flue gas sends into the strength feed system, is entered in material bin with carrying the fine coal raw material, and as drying heat
Source；Lag cooler, including：Coolant intake, coil pipe and cooling water outlet mouthful, the coil pipe wriggle and are arranged on inside the lag cooler,
The lag cooler is connected with the discharging opening of the pyrolysis reactor, for cooling down semicoke, and for the heat by high-temperature semi-coke is absorbed
Cooling water after amount intensification, the heating of feeding residential block；Condensation blower system, the condensation blower system is arranged on the heat accumulating type
Between pyrolysis reactor and cleaning system, its entrance is derived with the pyrolysis gas for being arranged on pyrolysis reactor lower section sidepiece
Mouth connection, outlet is connected with the cleaning system；Cleaning system, the cleaning system is connected with the condensation blower system, uses
In combustible gas is carried out into purified treatment, net combustion gas is obtained.
Inventor find, the reaction system according to embodiments of the present invention, by the use of built-in heat accumulation type radiant tube as plus
Thermal source, by the reasonable Arrangement to accumulation of heat radiant tube, temperature control is accurate, is conducive to the adjustment of product, takes layering double heat storage type heat
Solution reactor, system thermal efficiency is high, and combustion control system quantity is few, and control program is simplified, and multi-tier arrangement can be realized in addition,
Pyrolysis temperature can be adjusted flexibly, different target thermal decomposition product is realized；And pyrolytic process is simple, there is provided system reliability,
Realize temperature of reactor rationally to control, and the design of radiant tube can be simplified, reduce cost of investment.
Embodiments in accordance with the present invention, the heat storage type pyrolysis reactor is vertical furnace structure, and the heat-accumulation type hot
Solution reactor, further includes the level-sensing device that discharges, and the discharging level-sensing device includes measuring head and display, wherein, the test
Lower end of the head inside the pyrolysis reactor, the display is controlled located at the outside of the pyrolysis reactor for detecting
Semicoke load processed, makes discharging opening keep appropriate controlling level.
Embodiments in accordance with the present invention, the heat storage along the heat storage type pyrolysis reactor short transverse laminates
Put, every layer includes symmetrical two heat storages positioned at the radiant tube two ends.
Embodiments in accordance with the present invention, the reversal valve is connected by air/smoke pipeline with heat storage.
Embodiments in accordance with the present invention, the heat storage is ceramic honeycomb body material, and every layer of heat storage is 4-8 layers of spoke
Pipe is penetrated to provide as the flue gas of heating source.
Embodiments in accordance with the present invention, the reversal valve sets commutating period interval according to regenerator temperature change,
It is 20-150s, the both sides for making double heat storage type radiation guard system are alternately burnt-smoke discharging.
Embodiments in accordance with the present invention, the hopper is connected with the charging aperture, is set between the discharging opening and lag cooler
There is semicoke conveying device.
Embodiments in accordance with the present invention, combustion gas and air burn in the fuel burner nozzle, produce 600-1000 DEG C of height
Warm flue gas；After the radiant tube, the heat storage is heated to 500-650 to the flue gas by temperature drop to 500-700 DEG C
℃。
In another aspect of the present invention, fine coal heat accumulating type is carried out using foregoing system the invention provides one kind
The method of pyrolytic reaction.Embodiments in accordance with the present invention, the method is comprised the following steps：A. the fine coal sieve of particle will be broken into
Point, flue gas is introduced into strength feed system and enters in material bin for carrying the fine coal raw material through flue gas blower fan, and in carrying process
Middle conduct drying thermal source, dries to fine coal raw material；B. combustion gas and air burn in the fuel burner nozzle of side and produce high temperature
Flue gas, the high-temperature flue gas directly heat pyrolysis chamber by pyrolysis chamber side wall, and flue gas is built in by heat accumulation type radiant tube
In pyrolysis chamber, for pyrolytic reaction provides thermal source；After the high-temperature flue gas are through the radiant tube, the heat storage to opposite side is added
Heat, final flue gas carries fine coal and enters material bin through the flue gas blower fan；C. reversal valve changes according to the regenerator temperature and sets
Commutating period is spaced, and after reversal valve commutates, the fuel burner nozzle of the side stops supplying combustion gas, and the opposite side burner starts
For fuel gas buring and high-temperature flue gas are produced ,-the smoke discharging so that the both sides of double heat storage type radiation guard system are alternately burnt,
For pyrolytic reaction provides thermal source；D. fine coal raw material is entered into heat storage type pyrolysis reactor by charging aperture, is arranged at described
Radiant tube in reactor is uniform and heats, and is stayed for some time in the pyrolysis chamber of the reactor, completes pyrolytic process, moves
Move to the discharge of pyrolysis reactor lower end；E. the discharging level-sensing device detection controls fine coal semicoke, and high-temperature semi-coke is conveyed by semicoke
Device is discharged in lag cooler, and cooling water enters, and by built-in coil heat exchange, is arranged as normal temperature semicoke after semicoke is cooled down
Go out, and cooling water from normal temperature after high-temperature semi-coke by rising high-temperature, the heating of feeding residential block；F. pyrolysis gas are under pyrolysis reactor
The pyrolysis gas export mouth in portion is derived, and into the condensation blower system, condensation generation tar product, the combustible gas after cooling enters
The cleaning system, it is standby as net combustion gas or unstripped gas after the impurity gas in removing combustion gas.
Embodiments in accordance with the present invention, in the step a, the fine coal particle diameter is less than 6mm, and flue-gas temperature is 150-250
DEG C, the fine coal moisture of drying is less than 15%；In the step d, the residence time is 3-10s；In the step e, the temperature of high-temperature semi-coke
Spend is 400-950 DEG C；In the step f, pyrolysis gas temperature is 400-850 DEG C.
The present invention at least has the advantages that：
1）Pyrolytic process is simple, there is provided system reliability.
2）Layering double heat storage type pyrolysis reactor is taken, system thermal efficiency is high, and combustion control system quantity is few, control program
Simplify, multi-tier arrangement can be realized in addition, pyrolysis temperature can be adjusted flexibly, realize different target thermal decomposition product.
3）By the use of built-in heat accumulation type radiant tube as heating source, by the reasonable Arrangement to accumulation of heat radiant tube, realize
Temperature of reactor is rationally controlled, and can simplify the design of radiant tube, reduces cost of investment.
Brief description of the drawings
Fig. 1 is fine coal heat storage type pyrolysis reaction system structural representation of the present invention.
Wherein, hopper 1, strength feed system 2, heat storage type pyrolysis reactor 3, pyrolysis chamber 4, charging aperture 5, discharging opening 6, heat
Vent one's spleen export mouth 7, radiant tube 8, heat storage 9, fuel burner nozzle 10, air blower 11, flue gas blower fan 12, air line 13, flue gas
Pipeline 14, burning line 15, reversal valve 16, lag cooler 17, coolant intake 18, coil pipe 19, cooling water outlet mouthful 20 condenses air blast
System 21, cleaning system 22, discharge level-sensing device 23, measuring head 24, display 25.
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.The embodiments described below is exemplary, is only used for explaining the present invention, without being understood that
It is limitation of the present invention.Unreceipted particular technique or condition in embodiment, according to the skill described by document in the art
Art or condition are carried out according to product description.
The present invention proposes a kind of fine coal heat storage type pyrolysis reaction system.Embodiments in accordance with the present invention, Fig. 1 is the present invention
Fine coal heat storage type pyrolysis reaction system structural representation, shown in reference picture 1, the system includes：Hopper 1, strength feed system 2,
Heat storage type pyrolysis reactor 3, lag cooler 17, condensation blower system 21 and cleaning system 22, the strength feed system with it is described
Hopper is connected, and the hopper is connected with the charging aperture 5；The heat storage type pyrolysis reactor includes：Pyrolysis chamber 4, double heat storage type
Radiation guard system, charging aperture 5, discharging opening 6 and pyrolysis gas export mouth 7；The condensation blower system is arranged on the heat-accumulation type hot
Between solution reactor and cleaning system, its entrance and the pyrolysis gas export mouth of pyrolysis reactor lower section sidepiece is arranged on
Connection, outlet is connected with the cleaning system, when the pyrolysis gas that the temperature from the pyrolysis gas export mouth out is 400-850 DEG C
Temperature is down to 22-30 DEG C after into the condensation blower system, and tar is separated out in aeration step is condensed turns into tar product, cold
But the combustible gas after sends into the cleaning system；The cleaning system is connected with the condensation blower system, for by combustible gas
Purified treatment is carried out, net combustion gas is obtained.
Inventor find, the reaction system according to embodiments of the present invention, by the use of built-in heat accumulation type radiant tube as plus
Thermal source, by the reasonable Arrangement to accumulation of heat radiant tube, temperature control is accurate, is conducive to the adjustment of product, takes layering double heat storage type heat
Solution reactor, system thermal efficiency is high, and combustion control system quantity is few, and control program is simplified, and multi-tier arrangement can be realized in addition,
Pyrolysis temperature can be adjusted flexibly, different target thermal decomposition product is realized；And pyrolytic process is simple, there is provided system reliability,
Realize temperature of reactor rationally to control, and the design of radiant tube can be simplified, reduce cost of investment.
Embodiments in accordance with the present invention, the heat storage type pyrolysis reactor is vertical furnace structure, and the heat-accumulation type hot
Solution reactor, further includes the level-sensing device 23 that discharges, and the discharging level-sensing device includes measuring head 24 and display 25, wherein, institute
Lower end of the measuring head inside the pyrolysis reactor is stated, the display is used for located at the outside of the pyrolysis reactor
Detection control semicoke load, makes discharging opening keep appropriate controlling level.
Embodiments in accordance with the present invention, the double heat storage type radiation guard system includes：Radiant tube 8, heat storage 9, combustion gas burn
Mouth 10, air blower 11, flue gas blower fan 12, air line 13, flue gas pipeline 14, burning line 15 and reversal valve 16.
Embodiments in accordance with the present invention, the radiant tube along the heat storage type pyrolysis reactor short transverse multi-tier arrangement
Inside the pyrolysis chamber, every layer of two ends with many radiant tubes arranged in the horizontal direction, the radiant tube are distinguished
It is fixedly connected with the side wall of the pyrolysis chamber, high-temperature flue gas, institute is produced when combustion gas and air burn in the fuel burner nozzle of side
State high-temperature flue gas and pyrolysis chamber is directly heated by pyrolysis chamber side wall, and flue gas is built in pyrolysis chamber by heat accumulation type radiant tube
In, for pyrolytic reaction provides thermal source；After the high-temperature flue gas are through the radiant tube, the heat storage to opposite side is heated, most
Whole flue gas carries fine coal and enters the hopper through the flue gas blower fan, and fine coal raw material enters pyrolysis by the strength feed system
The top of reactor, in material during descending, heats by radiant tube, and pyrolytic reaction occurs in the atmosphere of isolation air,
Generation pyrolysis gas and high-temperature semi-coke, pyrolysis gas are derived from the pyrolysis gas export mouth, and high-temperature semi-coke is discharged from furnace bottom, wherein spoke
Penetrate pipe and take double heat storage type structure so that radiant tube temperature is uniform, and exhaust gas temperature is low, so that capacity usage ratio is high, and can
Realize preferable pyrolysis temperature control.
Embodiments in accordance with the present invention, the heat storage is symmetrical to be arranged on the outer of the heat storage type pyrolysis reactor
On wall, some embodiments of the invention, the heat storage along the heat storage type pyrolysis reactor short transverse laminates
Put, it is preferred that and every layer include symmetrical two heat storages positioned at the radiant tube two ends, every layer of heat storage is 4-
8 layers of radiant tube is provided as the flue gas of heating source；The heat storage center is provided with the fuel burner nozzle, for making to be passed through
Combustion gas and air burning, produce flue gas, flue gas through the radiant tube enter the pyrolysis chamber in as heating source provide pyrolysis
The energy for needing is reacted, some embodiments of the invention, the specific species of the heat storage is unrestricted, the present invention is preferably
It is ceramic honeycomb body material, it has unit volume surface big, the advantages of thermally-stabilised good, corrosion-resistant.
Embodiments in accordance with the present invention, form between the heat storage type pyrolysis reactor outer wall and the side wall of the pyrolysis chamber
Airtight passage, the airtight passage is connected with the radiant tube, for the flue gas that fuel burner nozzle burning is produced to be passed through into institute
In stating radiant tube, and flue gas is set to directly heat the pyrolysis chamber by pyrolysis chamber side wall.
Embodiments in accordance with the present invention, the air blower, flue gas blower fan respectively through the air line, flue gas pipeline with
The reversal valve connection, the reversal valve and the burning line are connected with the fuel burner nozzle respectively, also, the flue gas wind
Machine is connected with the strength feed system, for heat storage type pyrolysis reactor discharge flue gas to be sent into the strength charging system
System, is entered in material bin with carrying the fine coal raw material, and as drying thermal source.
Embodiments in accordance with the present invention, the specific species of the air line is unrestricted, as long as can be provided for fuel
Combustion air, air passes through the reversal valve first by the air blower through air line, then into described
Fuel burner nozzle and fuel gas buring in heat storage, 600-1000 DEG C of generation of high-temperature flue gas are passed through in the radiant tube, described
After the radiant tube, the heat storage is heated to 500-650 DEG C to flue gas by temperature drop to 500-700 DEG C, and makes flue gas
The pyrolysis chamber is directly heated by pyrolysis chamber side wall, the energy that pyrolytic reaction needs is provided as heating source.
Embodiments in accordance with the present invention, the specific material of flue gas pipeline and species are unrestricted, as long as can be by flue gas
The reactor is discharged, flue gas pipeline of the present invention is flue gas exhausting pipe line, and combustion product flue gas passes through the cigarette
Gas pipeline sends into the flue gas blower fan by the reversal valve, and heat storage type pyrolysis reactor discharge flue gas is sent into the gas
Power feed system, is entered in material bin with carrying the fine coal raw material, and as drying thermal source.
Embodiments in accordance with the present invention, the specific species of the burning line is unrestricted, as long as combustion reaction can be
There is provided combustion gas, some embodiments of the invention, due to using high heating value combustion gas, it is only necessary to which air single regenerative can be steady
Fixed burning.
Embodiments in accordance with the present invention, the reversal valve is connected by air/smoke pipeline with heat storage, the reversal valve
Commutating period interval, some embodiments of the invention, it is preferred that of the invention are set according to regenerator temperature change
Time interval is 20-150s, and the both sides for making double heat storage type radiation guard system are alternately burnt-smoke discharging；When changing
After being commutated to valve, side fuel burner nozzle stops supplying combustion gas, and opposite side fuel burner nozzle starts to supply fuel gas buring, and air is through original cigarette
Gas pipeline enters opposite side fuel burner nozzle, is burnt in fuel burner nozzle with combustion gas mixing, and the high-temperature flue gas of generation pass through radiant tube
Into in pyrolysis reactor, as heating source provide pyrolytic reaction need energy, flue gas after the radiant tube, flue-gas temperature
By side heat storage material after dropping to 500-700 degrees Celsius, flue-gas temperature further declines discharge, by the fume pipe
Line sends into flue gas blower fan.
Embodiments in accordance with the present invention, the lag cooler includes：Coolant intake 18, coil pipe 19 and cooling water outlet mouth 20,
Some embodiments of the invention, the specific species and shape of coil pipe of the present invention is unrestricted, and wherein species can be
Metal or non-metallic material, as long as having high temperature resistant and corrosion resistant feature, the coil pipe wriggles and is arranged on the cold slag
Inside machine, the lag cooler is connected with the discharging opening of the pyrolysis reactor, for cooling down semicoke, and for that will absorb high temperature half
Cooling water after burnt heat intensification, the heating of feeding residential block, resource reutilization, energy-conserving and environment-protective.Some realities of the invention
Example is applied, semicoke conveying device is also provided between the discharging opening and lag cooler.
In another aspect of the present invention, fine coal heat accumulating type is carried out using foregoing system the invention provides one kind
The method of pyrolytic reaction.Embodiments in accordance with the present invention, the method is comprised the following steps：
A. fine coal of the particle diameter less than 6mm will be broken into, the flue gas for being introduced through 150-250 DEG C come through flue gas blower fan introduces strength and enters
Material system, enters in material bin for carrying the fine coal raw material, and as drying thermal source in carrying process, low order fine coal
Removing moisture, until low order fine coal moisture is less than 15%, dries to fine coal raw material.
Embodiments in accordance with the present invention, the strength feed system is connected with the hopper, the hopper and the charging
Mouth is connected；The air blower, flue gas blower fan are connected through the air line, flue gas pipeline with the reversal valve respectively, described
Reversal valve and the burning line are connected with the fuel burner nozzle respectively, also, the flue gas blower fan feeds with the strength and is
System connection, for heat storage type pyrolysis reactor discharge flue gas to be sent into the strength feed system, to carry the fine coal
Raw material enters in material bin, and as drying thermal source.
B. combustion gas and air burn in the fuel burner nozzle of side and produce 600-1000 DEG C of high-temperature flue gas, the high temperature
Flue gas directly heats pyrolysis chamber by pyrolysis chamber side wall, and flue gas is built in pyrolysis chamber by heat accumulation type radiant tube, is heat
Solution reaction provides thermal source；The high-temperature flue gas after the radiant tube, temperature drop to 500-700 DEG C, the accumulation of heat to opposite side
Body carries out being heated to 500-650 DEG C, and final flue gas carries fine coal and enters material bin through the flue gas blower fan.
Embodiments in accordance with the present invention, the radiant tube along the heat storage type pyrolysis reactor short transverse multi-tier arrangement
Inside the pyrolysis chamber, every layer of two ends with many radiant tubes arranged in the horizontal direction, the radiant tube are distinguished
It is fixedly connected with the side wall of the pyrolysis chamber, high-temperature flue gas, institute is produced when combustion gas and air burn in the fuel burner nozzle of side
State high-temperature flue gas and pyrolysis chamber is directly heated by pyrolysis chamber side wall, and flue gas is built in pyrolysis chamber by heat accumulation type radiant tube
In, for pyrolytic reaction provides thermal source；After the high-temperature flue gas are through the radiant tube, the heat storage to opposite side is heated, most
Whole flue gas carries fine coal and enters the hopper through the flue gas blower fan, and raw material strength feed system shown in enters pyrolytic reaction
The top of device, in material during descending, heats by radiant tube, and pyrolytic reaction occurs in the atmosphere of isolation air, produces
Pyrolysis gas and high-temperature semi-coke, pyrolysis gas are derived from the pyrolysis gas export mouth, and high-temperature semi-coke is discharged from furnace bottom, wherein radiant tube
Take double heat storage type structure so that radiant tube temperature is uniform, and exhaust gas temperature is low, so that capacity usage ratio is high, and can realize
Preferable pyrolysis temperature control.
C. reversal valve sets commutating period interval, after reversal valve commutates, described one according to regenerator temperature change
The fuel burner nozzle of side stops supplying combustion gas, and the opposite side burner starts for fuel gas buring and produces high-temperature flue gas, so that described
The both sides of double heat storage type radiation guard system are alternately burnt-smoke discharging, for pyrolytic reaction provides thermal source.
Embodiments in accordance with the present invention, the reversal valve is connected by air/smoke pipeline with heat storage, the reversal valve
Commutating period interval, some embodiments of the invention, it is preferred that of the invention are set according to regenerator temperature change
Time interval is 20-150s, and the both sides for making double heat storage type radiation guard system are alternately burnt-smoke discharging；When changing
After being commutated to valve, side fuel burner nozzle stops supplying combustion gas, and opposite side fuel burner nozzle starts to supply fuel gas buring, and air is through original cigarette
Gas pipeline enters opposite side fuel burner nozzle, is burnt in fuel burner nozzle with combustion gas mixing, and the high-temperature flue gas of generation pass through radiant tube
Into in pyrolysis reactor, as heating source provide pyrolytic reaction need energy, flue gas after the radiant tube, flue-gas temperature
By side heat storage material after dropping to 500-700 degrees Celsius, flue-gas temperature further declines discharge, by the fume pipe
Line sends into flue gas blower fan.
D. fine coal raw material is entered into heat storage type pyrolysis reactor by charging aperture, is arranged in the reactor
Radiant tube is uniform and heats, and 3-10s is stopped in the pyrolysis chamber of the reactor, completes pyrolytic process, is moved to pyrolytic reaction
Discharge device lower end.
E. the discharging level-sensing device detection controls fine coal semicoke, and temperature is defeated by semicoke for 400-950 DEG C of high-temperature semi-coke
Send device to be discharged in lag cooler, cooling water enters, by built-in coil heat exchange, arranged as normal temperature semicoke after semicoke is cooled down
Go out, and cooling water from normal temperature after high-temperature semi-coke by rising high-temperature, the heating of feeding residential block.
Embodiments in accordance with the present invention, the heat storage type pyrolysis reactor is vertical furnace structure, and the heat-accumulation type hot
Solution reactor, further includes the level-sensing device 23 that discharges, and the discharging level-sensing device includes measuring head 24 and display 25, wherein, institute
Lower end of the measuring head inside the pyrolysis reactor is stated, the display is used for located at the outside of the pyrolysis reactor
Detection control semicoke load, makes discharging opening keep appropriate controlling level.
Embodiments in accordance with the present invention, the lag cooler includes：Coolant intake 18, coil pipe 19 and cooling water outlet mouth 20,
Some embodiments of the invention, the specific species and shape of coil pipe of the present invention is unrestricted, and wherein species can be
Metal or non-metallic material, as long as having high temperature resistant and corrosion resistant feature, the coil pipe wriggles and is arranged on the cold slag
Inside machine, the lag cooler is connected with the discharging opening of the pyrolysis reactor, for cooling down semicoke, and for that will absorb high temperature half
Cooling water after burnt heat intensification, the heating of feeding residential block, resource reutilization, energy-conserving and environment-protective.Some realities of the invention
Example is applied, semicoke conveying device is also provided between the discharging opening and lag cooler.
F. pyrolysis gas export mouth of the pyrolysis gas from the temperature of pyrolysis reactor bottom for 400-850 DEG C is derived, into described
Condensation blower system, condensation generation tar product, the combustible gas after cooling enters the cleaning system, the impurity in removing combustion gas
It is standby as net combustion gas or unstripped gas after gas.
Embodiments in accordance with the present invention, the condensation blower system is arranged on the heat storage type pyrolysis reactor and purification is
Between system, its entrance be connected with the pyrolysis gas export mouth for being arranged on pyrolysis reactor lower section sidepiece, export with it is described
Cleaning system is connected, when the pyrolysis gas that the temperature from the pyrolysis gas export mouth out is 400-850 DEG C enter the condensation drum
Temperature is down to 22-30 DEG C after wind system, and tar is separated out in aeration step is condensed turns into tar product, the flammable pneumatic transmission after cooling
Enter the cleaning system；The cleaning system is connected with the condensation blower system, for combustible gas to be carried out into purified treatment.
Fine coal heat storage type pyrolysis reaction process flow is as follows：
Through being crushed to low order fine coal of the particle diameter less than 6mm（Bituminous coal, lignite etc.）, 150-250 DEG C come is introduced through through flue gas blower fan
Flue gas is carried along into hopper, the removing moisture of low order fine coal in flue gas carrying process, until low order fine coal moisture is less than
15%, then fine coal enter the pyrolysis reactor in, through the uniform of the radiant tube in pyrolysis reactor and heating after, during stop
Between after 3-10s, to fall into pyrolysis oven bottom, the semicoke amount of the level-sensing device control pyrolysis oven bottom, semicoke conveying device is high
Warm semicoke is expelled to the lag cooler, 400-950 DEG C of high-temperature semi-coke temperature range, by temperature drop after lag cooler be less than 60
DEG C, it is then sent to semicoke heap and sells outside the venue, and lag cooler cooling inflow temperature is 20-40 DEG C, cooling water outlet temperature is 65-95
DEG C, send into residential area as heating hot water；From the pyrolysis gas that pyrolysis gas export mouth temperature out is 400-850 DEG C
Temperature is down to 22-30 DEG C after into condensation blower system, and tar is separated out in aeration step is condensed turns into tar product, after cooling
Combustible gas feeding cleaning system, removing combustion gas in impurity gas after it is standby as net combustion gas or unstripped gas.
Heat accumulation type radiant tube heat smoke temperature out is 150-250 DEG C, is collected after smoke induced draught fan after reversal valve
Raw material stoving.
Case study on implementation 1：Australian lignite is processed using heat storage type pyrolysis reaction system, its lignite analysis number
1- tables 3 are shown in Table according to, process operation parameter and material balance.Three layers of heat storage are taken to arrange, every layer of heat storage arranges 4 layers of radiation
Pipe, the tar yield drawn from table 3 is up to 12.3%, is the tar yield 110% that Ge Jinfa is obtained, and pyrolysis gas yield is 16.7%.
Table 1：Australian lignite analyze data
。
Table 2：Process operation parameter
| Sequence number | Parameter name | Parameter value | Sequence number | Parameter name | Parameter value |
| 1 | One layer of radiant tube wall temperature | 650℃ | 6 | One layer of radiant tube exhaust gas temperature | 180℃ |
| 2 | Two layers of radiant tube wall temperature | 600℃ | 7 | Two layers of radiant tube wall temperature | 160℃ |
| 3 | Three layers of radiant tube wall temperature | 550℃ | 8 | Three layers of radiant tube wall temperature | 140℃ |
| 4 | Reversal valve sets the time | 60s |
。
Table 3：Material balance table
。
Case study on implementation 2：Change radiant tube wall temperature and reversal valve residence time, the tar yield for obtaining is 8.6%, pyrolysis gas
Yield is 19.4%, and by the raising of pyrolysis temperature, the yield of pyrolysis oil have dropped, but the productivity ratio case 1 of pyrolysis gas is improved
.
Table 4：Process operation parameter
| Sequence number | Parameter name | Parameter value | Sequence number | Parameter name | Parameter value |
| 1 | One layer of radiant tube wall temperature | 700℃ | 6 | One layer of radiant tube exhaust gas temperature | 190℃ |
| 2 | Two layers of radiant tube wall temperature | 660℃ | 7 | Two layers of radiant tube wall temperature | 170℃ |
| 3 | Three layers of radiant tube wall temperature | 600℃ | 8 | Three layers of radiant tube wall temperature | 150℃ |
| 4 | Reversal valve sets the time | 80s |
Table 5：Material balance table
。
Inventor find, the reaction system according to embodiments of the present invention, by the use of built-in heat accumulation type radiant tube as plus
Thermal source, by the reasonable Arrangement to accumulation of heat radiant tube, temperature control is accurate, is conducive to the adjustment of product, takes layering double heat storage type heat
Solution reactor, system thermal efficiency is high, and combustion control system quantity is few, and control program is simplified, and multi-tier arrangement can be realized in addition,
Pyrolysis temperature can be adjusted flexibly, different target thermal decomposition product is realized；And pyrolytic process is simple, there is provided system reliability,
Realize temperature of reactor rationally to control, and the design of radiant tube can be simplified, reduce cost of investment.
In the description of the invention, it is to be understood that term " on ", D score, "left", "right", " bottom ", " top ",
The orientation or position relationship of the instruction such as " side " " interior ", " outward " are based on orientation shown in the drawings or position relationship, merely to just
Described in the description present invention and simplifying, rather than indicate imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.Additionally, term " first ", " second " are only used
In description purpose, and it is not intended that indicating or implying relative importance or the implicit number for indicating indicated technical characteristic
Amount.Thus, " first " is defined, one or more this feature can be expressed or be implicitly included to the feature of " second ".
In the description of the invention, unless otherwise indicated, " multiple " is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Be mechanically connect, or put connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can in an appropriate manner be combined in one or more any embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of fine coal heat storage type pyrolysis reaction system, it is characterised in that including：
Hopper；
Strength feed system, the strength feed system is connected with the hopper；
Heat storage type pyrolysis reactor, including：Pyrolysis chamber, double heat storage type radiation guard system, charging aperture, discharging opening and pyrolysis gas are derived
Mouthful, wherein,
The double heat storage type radiation guard system includes：Radiant tube, heat storage, fuel burner nozzle, air blower, flue gas blower fan, air
Pipeline, flue gas pipeline, burning line and reversal valve, wherein,
Along the short transverse multi-tier arrangement of the heat storage type pyrolysis reactor inside the pyrolysis chamber, every layer has the radiant tube
There are many radiant tubes arranged in the horizontal direction, the two ends of the radiant tube are fixed with the side wall of the pyrolysis chamber connect respectively
Connect；
The heat storage is symmetrical to be arranged on the outer wall of the heat storage type pyrolysis reactor, and the heat storage center is provided with
The fuel burner nozzle, for making the combustion gas being passed through and air burning, produces flue gas；
Form airtight passage between the heat storage type pyrolysis reactor outer wall and the side wall of the pyrolysis chamber, the airtight passage with
The radiant tube connection, for the flue gas that fuel burner nozzle burning is produced to be passed through in the radiant tube, and passes through flue gas
Pyrolysis chamber side wall directly heats the pyrolysis chamber；
The air blower, flue gas blower fan are connected through the air line, flue gas pipeline with the reversal valve respectively, the commutation
Valve and the burning line are connected with the fuel burner nozzle respectively, also, the flue gas blower fan connects with the strength feed system
Connect, for heat storage type pyrolysis reactor discharge flue gas to be sent into the strength feed system, to carry the fine coal raw material
Enter in material bin, and as drying thermal source；
Lag cooler, including：Coolant intake, coil pipe and cooling water outlet mouthful, the coil pipe wriggle and are arranged on inside the lag cooler,
The lag cooler is connected with the discharging opening of the pyrolysis reactor, for cooling down semicoke, and for the heat by high-temperature semi-coke is absorbed
Cooling water after amount intensification, the heating of feeding residential block；
Condensation blower system, the condensation blower system is arranged between the heat storage type pyrolysis reactor and cleaning system, its
Entrance is connected with the pyrolysis gas export mouth for being arranged on pyrolysis reactor lower section sidepiece, and outlet connects with the cleaning system
Connect；
Cleaning system, the cleaning system is connected with the condensation blower system, for combustible gas to be carried out into purified treatment, obtains
Net combustion gas.
2. system according to claim 1, it is characterised in that the heat storage type pyrolysis reactor is vertical furnace structure, and
And the heat storage type pyrolysis reactor, the level-sensing device that discharges is further included, the discharging level-sensing device includes measuring head and display,
Wherein, lower end of the measuring head inside the pyrolysis reactor, the display is located at the outer of the pyrolysis reactor
Portion, for detecting control semicoke load, makes discharging opening keep appropriate controlling level.
3. system according to claim 2, it is characterised in that the heat storage along the heat storage type pyrolysis reactor height
Degree direction multi-tier arrangement, every layer includes symmetrical two heat storages positioned at the radiant tube two ends.
4. the system according to any one of claim 1-3, it is characterised in that the reversal valve passes through air/smoke pipe
Line is connected with heat storage.
5. system according to claim 3, it is characterised in that the heat storage is ceramic honeycomb body material, every layer of storage
Hot body is provided as the flue gas of heating source for 4-8 layers of radiant tube.
6. the system according to any one of claim 1-3, the reversal valve changes according to the regenerator temperature and sets
Commutating period is spaced, and is 20-150s, and the both sides for making double heat storage type radiation guard system are alternately burnt-smoke discharging.
7. the system according to any one of claim 1-3, it is characterised in that the hopper is connected with the charging aperture,
Semicoke conveying device is provided between the discharging opening and lag cooler.
8. the system according to any one of claim 1-3, it is characterised in that combustion gas and air are in the fuel burner nozzle
Burning, produces 600-1000 DEG C of high-temperature flue gas；The flue gas after the radiant tube, to 500-700 DEG C incite somebody to action by temperature drop
The heat storage is heated to 500-650 DEG C.
9. a kind of method that system using any one of claim 1-8 carries out fine coal heat storage type pyrolysis reaction, it is special
Levy and be, comprise the following steps：
A. the coal powder sieve of particle will be broken into, flue gas introduces strength feed system through flue gas blower fan to be used to carry the fine coal
Raw material enters in material bin, and fine coal raw material is dried as drying thermal source in carrying process；
B. combustion gas and air burn in the fuel burner nozzle of side and produce high-temperature flue gas, and the high-temperature flue gas pass through pyrolysis chamber side
Wall directly heats pyrolysis chamber, and flue gas is built in pyrolysis chamber by heat accumulation type radiant tube, for pyrolytic reaction provides thermal source；Institute
After high-temperature flue gas are stated through the radiant tube, the heat storage to opposite side is heated, and final flue gas is carried through the flue gas blower fan
Fine coal enters material bin；
C. reversal valve sets commutating period interval, after reversal valve commutates, the side according to regenerator temperature change
Fuel burner nozzle stops supplying combustion gas, and the opposite side burner starts for fuel gas buring and produces high-temperature flue gas, so that double storages
The both sides of hot type radiation guard system are alternately burnt-smoke discharging, for pyrolytic reaction provides thermal source；
D. fine coal raw material is entered into heat storage type pyrolysis reactor by charging aperture, is arranged at the radiation in the reactor
Pipe is uniform and heats, and is stayed for some time in the pyrolysis chamber of the reactor, completes pyrolytic process, is moved to pyrolysis reactor
Discharge lower end；
E. the discharging level-sensing device detection controls fine coal semicoke, and high-temperature semi-coke is discharged in lag cooler by semicoke conveying device,
Cooling water enters, and by built-in coil heat exchange, is discharged as normal temperature semicoke after semicoke is cooled down, and cooling water is by high temperature half
It is defocused to rise high-temperature, the heating of feeding residential block from normal temperature；
F. pyrolysis gas are derived from the pyrolysis gas export mouth of pyrolysis reactor bottom, into the condensation blower system, condensation generation
Tar product, the combustible gas after cooling enters the cleaning system, as net combustion gas or raw material after the impurity gas in removing combustion gas
Gas is standby.
10. method according to claim 9, it is characterised in that in the step a, the fine coal particle diameter is less than 6mm, cigarette
Temperature degree is 150-250 DEG C, and the fine coal moisture of drying is less than 15%；In the step d, the residence time is 3-10s；The step e
In, the temperature of high-temperature semi-coke is 400-950 DEG C；In the step f, pyrolysis gas temperature is 400-850 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588423A (en) * | 2017-10-09 | 2018-01-16 | 神雾环保技术股份有限公司 | A kind of heat storage type pyrolysis stove |
| CN107586549A (en) * | 2017-10-09 | 2018-01-16 | 神雾环保技术股份有限公司 | A kind of heat accumulating type completely cuts off smoke gas pyrolysis stove |
| CN107936992A (en) * | 2017-12-22 | 2018-04-20 | 北京神雾电力科技有限公司 | A kind of high temperature three-segment formula waste heat recovery pyrolysis reactor |
-
2016
- 2016-12-16 CN CN201611166336.0A patent/CN106701128A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588423A (en) * | 2017-10-09 | 2018-01-16 | 神雾环保技术股份有限公司 | A kind of heat storage type pyrolysis stove |
| CN107586549A (en) * | 2017-10-09 | 2018-01-16 | 神雾环保技术股份有限公司 | A kind of heat accumulating type completely cuts off smoke gas pyrolysis stove |
| CN107936992A (en) * | 2017-12-22 | 2018-04-20 | 北京神雾电力科技有限公司 | A kind of high temperature three-segment formula waste heat recovery pyrolysis reactor |
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