CN104762096B - Gas-conducting cells, gas operated device, pulverized coal pyrolysis device and method - Google Patents
Gas-conducting cells, gas operated device, pulverized coal pyrolysis device and method Download PDFInfo
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- CN104762096B CN104762096B CN201510150149.2A CN201510150149A CN104762096B CN 104762096 B CN104762096 B CN 104762096B CN 201510150149 A CN201510150149 A CN 201510150149A CN 104762096 B CN104762096 B CN 104762096B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The present invention relates to gas-conducting cells, gas operated device, pulverized coal pyrolysis device and method.Involved gas-conducting cells include upper vent and lower blow vent, and the area of upper vent is less than between the area of lower blow vent, upper and lower blow vent to be connected by breather pipe, and by upper vent to the direction of lower blow vent, the cross-sectional area of breather pipe gradually increases.Involved gas operated device includes multiple gas-conducting cells, and multiple gas-conducting cells are in turn connected to form air guide path, and the connected mode of adjacent gas-conducting cells is：The upper vent of one of gas-conducting cells is installed in the lower blow vent of another gas-conducting cells, and forms side-inlet between the lower blow vent and the upper vent.Involved pulverized coal pyrolysis device includes raw coal preheating device, pulverized coal pyrolysis stove, semicoke product cooling device and semi-coke powder combustion furnace.Involved method is that fine coal is pyrolyzed using said apparatus.The present invention is easy to coal gas during pulverized coal pyrolysis to export, and dust entrainment is few in coal gas, realizes that vertical heater is pyrolyzed fine coal.
Description
Technical field
The present invention relates to coal pyrolysis technology, and in particular to a kind of gas-conducting cells, gas operated device, pulverized coal pyrolysis device and side
Method.
Background technology
Pulverized coal pyrolysis has many technologies both at home and abroad, but mainly includes external heating type heat solution, solid heat carrier pyrolysis method, soon
Fast gas pyrolysismethod etc..
Wherein：Solid thermal carriers have in coal gas that dust is big, semicoke ash content；There is gas in gas fast pyrogenation
The problems such as internal circulating load is big, the heating cooling recyclegas thermal efficiency is low, dust is big in coal gas, though and external-heat upright furnace pyrolysis fine coal
So there are problems that heat transfer efficiency is low, yield, but vertical heater has comprehensive energy consumption low, invests small, simple operation and other advantages, dashes forward
It is that coal gas is difficult to discharge from material to go wrong, and wet quenching pollution environment, water consumption is big, and thermal source presence is made using pyrolysis coal gas
Waste phenomenon of coal gas etc..
The content of the invention
The defect or deficiency existed for prior art, the invention provides a kind of gas-conducting cells, the gas-conducting cells include
Upper vent and lower blow vent, the ventilation open area of the upper vent are less than the ventilation open area of lower blow vent, described logical
Connected between gas port and lower blow vent by breather pipe, and by upper vent to the direction of lower blow vent, the cross section face of breather pipe
Product gradually increases.
The gas-conducting cells include a breather pipe, and one section of the breather pipe is upper vent, and the other end is lower blow vent.
The gas-conducting cells include upper vent, lower blow vent and breather pipe, and the upper vent is tubular-shaped structures, described
Lower blow vent is tubular-shaped structures, and the breather pipe is pyramidal structure.
Optionally, the height of the upper vent is 40-60mm, a diameter of 50-100mm；Breather pipe is highly 80-
120mm, taper is 1:3；The height of lower blow vent is 80-120mm, a diameter of 90-120mm.
Present invention also offers the gas operated device based on above-mentioned gas-conducting cells, the gas operated device includes multiple of the present invention
Gas-conducting cells, multiple gas-conducting cells are in turn connected to form air guide path, and the connected mode of adjacent gas-conducting cells is：One of them
The upper vent of gas-conducting cells is installed in the lower blow vent of another gas-conducting cells, and the lower blow vent and the upper vent it
Between form side-inlet.
Optionally, the connected mode of adjacent gas-conducting cells is：The upper vent movably arranged of one of gas-conducting cells
In the lower blow vent of another gas-conducting cells.
Further alternative, the connected mode of adjacent gas-conducting cells is：The upper vent hanging of one of gas-conducting cells
Formula is installed in the lower blow vent of another gas-conducting cells, and one of gas-conducting cells can be with relative to another gas-conducting cells
Activity.
Further optional, the connected mode of adjacent gas-conducting cells is：Pacify in the lower blow vent of another gas-conducting cells
Equipped with a cross bar, the upper vent of one of gas-conducting cells is suspended on the cross bar.
Compared with prior art, the beneficial effect of gas-conducting cells of the invention and gas operated device is：
(1) carbonization chamber equipped with wireway produces tar, coal gas and semicoke available for various low order pulverized coal pyrolysis；
(2) wireway can reduce gas pressure in stove, be easy to the descending movement of fine coal, be difficult to make somebody a mere figurehead；
(3) produced with this device raw coke oven gas entrainment coke powder amount it is few, can output high-quality coal tar oil and gas；
(4) movable connection (such as suspension link) is such that device has certain amount of deflection, and gas inlet should not be blocked.
Present invention also offers a kind of pulverized coal pyrolysis device, including：
(1) raw coal preheating device：The steam produced during with cooling semicoke carries out indirectly heat to raw coal；
(2) pulverized coal pyrolysis stove：The raw coal after preheating is pyrolyzed by indirectly heat using heat smoke, after pyrolysis
Fine coal become semicoke rear portion as semicoke product, a part provides thermal source as fuel semicoke for pyrolysis oven；During pyrolysis
The coal gas of generation is discharged out of the furnace into coal gas cooling purifying device by the gas operated device being installed in pyrolysis oven, obtains scrubbed gas
And tar；
(3) semicoke product cooling device：For tubular type indirect water-cooling structure, it is pre- that the steam that semicoke cooling is produced is used for fine coal
Heated drying；
(4) semi-coke powder combustion furnace：It is required when the flue gas that semi-coke powder and warm-up combustion-supporting air burning are produced is as pulverized coal pyrolysis
Heat smoke, heat smoke and the combustion air excluded outside stove exchange heat, Mist heat recovering.
The method being pyrolyzed using said apparatus to fine coal is included：(1) raw coal is preheated：Raw coal is preheated, with cold
But the steam produced during semicoke carries out indirectly heat to raw coal；
(2) pulverized coal pyrolysis：Indirectly heat pyrolysis, fine coal after pyrolysis are carried out to the raw coal after preheating using heat smoke
Become semicoke rear portion as semicoke product, a part provides thermal source as fuel semicoke for pyrolysis oven；Produced during pyrolysis
Coal gas is discharged out of the furnace into coal gas cooling purifying device by the gas operated device being installed in pyrolysis oven, obtains scrubbed gas and Jiao
Oil；
(3) semicoke product cooling：For tubular type indirect water-cooling structure, it is dry that the steam that semicoke cooling is produced is used for fine coal preheating
It is dry；
(4) semi-coke powder burns：It is required when the flue gas that semi-coke powder and warm-up combustion-supporting air burning are produced is as pulverized coal pyrolysis
Heat smoke, the heat smoke excluded outside stove exchanges heat with combustion air, Mist heat recovering；
The flue-gas temperature produced during the coal-char combustion is 900-1100 DEG C, goes out the flue gas that pot type burner enters regenerator heat exchanger
Temperature is 300-500 DEG C, and fine coal is 6-16 hours in the carbonization chamber residence time.
Compared with prior art, the beneficial effect of pulverized coal pyrolysis device of the invention is：
(1) raw coal is subjected to steam indirectly heat, it is ensured that fine coal is nonflammable when drying, drying efficiency is high, main equipment
Movement-less part, energy-conservation, while mechanical water does not enter coal gas system.
(2) dried fine coal by being pyrolyzed for a long time in carbonization chamber, and pyrolysis rate is slow, and coal gas spilling speed is low, coal gas
Middle dust content is low, it is not necessary to special coal gas dust collector.
(3) burning semicoke replaces coal gas, has not only saved coal gas, finely-ground coke is reasonably utilized, reduction pyrolysis heating
With the cost of fuel, and burning semi-coke powder is also beneficial to environmental protection.
(4) semicoke heating furnace is mainly burnt by coke powder, and adverse current heating fine coal, fume afterheat is preheated for combustion air,
Heat gradient is utilized, and heat utilization efficiency is high.
(5) external-heat is heated, and flue gas does not influence the quality of coal gas, coke powder and tar.
To sum up, fine coal pot type burner pyrolytic process of the invention so that pulverized coal pyrolysis pyrolysis energy consumption is low, gas dust content
The low, thermal efficiency is high, environmental pollution is small, investment is low；Calorific value of gas is high, and tar yield is high, and coke powder ash content is low.
Brief description of the drawings
Fig. 1 is one of structure chart of gas operated device of the present invention；
Fig. 2 is the two of the structure chart of the gas operated device of the present invention；
Fig. 3 is the structural representation of the pulverized coal pyrolysis device of the present invention；
Fig. 4 for embodiment 3 pyrolysis oven in gas operated device scheme of installation；
Fig. 5 for embodiment 4 pyrolysis oven in gas operated device scheme of installation.
Embodiment
Fine coal of the present invention is less than 20 millimeters not to be spontaneous during coal mining and transport production
With the mixing fine coal of particle diameter.
The taper of the pyramidal structure breather pipe of the present invention ensures that fine coal falls naturally, and coal gas enters from the lower blow vent of its side
Mouth is not blocked by descending coal charge, is conducive to raw coke oven gas to import, also to prevent that the coal charge in carbonization chamber from being entered by lower blow vent
Gas operated device.
Embodiment 1：
With reference to Fig. 1, the gas operated device of the embodiment includes multiple gas-conducting cells, and each gas-conducting cells include upper vent 1,
Lower blow vent 3 and breather pipe 2, wherein upper and lower blow vent is circular tube structure, breather pipe 2 is conical tube.
It is connected between gas-conducting cells using suspension type connection, i.e., is provided with the lower blow vent of gas-conducting cells above
Through hole is offered on hanger bar 4, the side wall of the upper vent of the gas-conducting cells of lower section, and is suspended on through the through hole in hanger bar,
Side-inlet is formed between so adjacent lower blow vent and lower blow vent.Adjacent gas-conducting cells are connected using suspension type, its it
Between have certain amount of deflection, when coal charge is descending, be conducive to avoiding air guide blockage.
The height of the upper vent of the embodiment is 40mm, diameter of phi=500mm；Breather pipe is highly 80mm, and taper is
1:3；The height of lower blow vent is 120mm, diameter of phi=90mm.
Embodiment 2：
As shown in Fig. 2 the gas operated device of the embodiment includes multiple gas-conducting cells, each gas-conducting cells include upper vent
5, lower blow vent 7 and breather pipe 6, wherein upper and lower blow vent is case structure, breather pipe 6 is frustum shape.Equally it is connected and leads
Connected between gas unit using hanger bar 8.
The size of the upper vent of the embodiment is 60X1400mm；The height dimension of breather pipe is 100mm；Lower blow vent
Size be 120X1500mm.
Embodiment 3：
With reference to Fig. 3, the pulverized coal pyrolysis device of the embodiment is cold including raw coal preheating device, pulverized coal pyrolysis stove, semicoke product
But device and semi-coke powder combustion furnace, as shown in figure 4, to every 0.5-1 meters setting 1 embodiment 1 along wide in pulverized coal pyrolysis stove 9
Described gas operated device 10, the taper of gas operated device conical section ensures that fine coal falls naturally, and the import of coal gas side is not by descending
Coal charge blocks, and is conducive to raw coke oven gas to import, also to prevent that the coal charge in carbonization chamber from entering wireway by coal gas entrance hole 4.
The steam that raw coal is produced in raw coal preheating device during cooled semicoke carries out indirectly heat；
Heat is transmitted to heat by the high-temperature flue gas that coal-char combustion is produced in pyrolysis oven by the horizontal flue of carbonization chamber both sides
The fine coal of furnace interior is solved, flue gas is countercurrent flow with fine coal traffic direction；Raw coal after preheating and drying is in pulverized coal pyrolysis stove
Indirectly heat pyrolysis is carried out by heat smoke, fine coal after pyrolysis becomes semicoke rear portion as semicoke product, and a part is made
For fuel semicoke, thermal source is provided for pyrolysis oven；Pyrolysis coal gas is discharged out of the furnace entrance by the gas operated device being installed in pyrolysis oven
Coal gas cooling purifying device, obtains scrubbed gas and tar；
Half-angle product is conveyed into progress tubular type indirect water-cooling in semicoke product cooling device, and the steam that semicoke cooling is produced can
For fine coal preheating and drying；
Part half-angle product burnt in semi-coke powder combustion furnace with warm-up combustion-supporting air the flue gas produced as fine coal heat
Required heat smoke during solution, the heat smoke excluded outside stove is exchanged heat by regenerator heat transfer technology and combustion air, more than recovered flue gas
Heat.
The flue-gas temperature produced in pyrolytic process during coal-char combustion is 900-1100 DEG C, goes out pot type burner and enters regenerator heat exchanger
Flue-gas temperature be 300-500 DEG C, fine coal the carbonization chamber residence time be 6-16 hours.
Embodiment 4：
The pulverized coal pyrolysis device of the embodiment is provided with the box of embodiment 2 and led as different from Example 3, in pyrolysis oven
Device of air, as shown in figure 5, being provided with box gas operated device 12 in pyrolysis oven 11.
Claims (7)
1. a kind of gas operated device, it is characterised in that the gas operated device includes multiple gas-conducting cells, the gas-conducting cells include one and led to
Tracheae, one section of the breather pipe is upper vent, and the other end is lower blow vent；
The ventilation open area of the upper vent is less than the ventilation open area of lower blow vent, the upper vent and lower blow vent it
Between connected by breather pipe, and along upper vent to the direction of lower blow vent, the cross-sectional area of breather pipe gradually increases；
Multiple gas-conducting cells are in turn connected to form air guide path, and the connected mode of adjacent gas-conducting cells is：One of air guide list
The upper vent of member is installed in the lower blow vent of another gas-conducting cells, and is formed between the lower blow vent and the upper vent
Side-inlet.
2. gas operated device as claimed in claim 1, it is characterised in that the height of the upper vent is 40-60mm, a diameter of
50-100mm；Breather pipe is highly 80-120mm, and taper is 1:3；The height of lower blow vent is 80-120mm, a diameter of 90-
120mm。
3. gas operated device as claimed in claim 1, it is characterised in that the connected mode of adjacent gas-conducting cells is：One of them
The upper vent movably arranged of gas-conducting cells is in the lower blow vent of another gas-conducting cells.
4. gas operated device as claimed in claim 1, it is characterised in that the connected mode of adjacent gas-conducting cells is：One of them
The upper vent suspension type of gas-conducting cells is installed in the lower blow vent of another gas-conducting cells, and one of gas-conducting cells phase
Can activity for another gas-conducting cells.
5. gas operated device as claimed in claim 1, it is characterised in that the connected mode of adjacent gas-conducting cells is：Another is led
One cross bar is installed, the upper vent of one of gas-conducting cells is suspended on the cross bar in the lower blow vent of gas unit.
6. a kind of pulverized coal pyrolysis device, it is characterised in that device includes：
(1) raw coal preheating device：Raw coal is preheated, the steam produced during with cooling semicoke carries out indirectly heat to raw coal；
(2) pulverized coal pyrolysis stove：Indirectly heat pyrolysis is carried out to the raw coal after preheating using heat smoke, fine coal after pyrolysis becomes
Into semicoke rear portion as semicoke product, a part provides thermal source as fuel semicoke for pyrolysis oven；The coal produced during pyrolysis
Gas is discharged out of the furnace into coal gas cooling purifying device by the gas operated device being installed in pyrolysis oven, obtains scrubbed gas and tar；
The gas operated device is the gas operated device described in claim 1；
(3) semicoke product cooling device：For tubular type indirect water-cooling structure, it is dry that the steam that semicoke cooling is produced is used for fine coal preheating
It is dry；
(4) semi-coke powder combustion furnace：Required heat when the flue gas that semi-coke powder and warm-up combustion-supporting air burning are produced is as pulverized coal pyrolysis
Flue gas, the heat smoke discharged out of the furnace exchanges heat with combustion air, Mist heat recovering.
7. the method being pyrolyzed using the device described in claim 6 to fine coal, it is characterised in that method includes：
(1) raw coal is preheated：Raw coal is preheated, the steam produced during with cooling semicoke carries out indirectly heat to raw coal；
(2) pulverized coal pyrolysis：Indirectly heat pyrolysis is carried out to the raw coal after preheating using heat smoke, fine coal after pyrolysis becomes
Semicoke rear portion provides thermal source as fuel semicoke as semicoke product, a part for pyrolysis oven；The coal gas produced during pyrolysis
Discharged out of the furnace by the gas operated device being installed in pyrolysis oven into coal gas cooling purifying device, obtain scrubbed gas and tar；
(3) semicoke product cooling：For tubular type indirect water-cooling structure, the steam that semicoke cooling is produced is used for fine coal preheating and drying；
(4) semi-coke powder burns：Required hot cigarette when the flue gas that semi-coke powder and warm-up combustion-supporting air burning are produced is as pulverized coal pyrolysis
Gas, the heat smoke discharged out of the furnace exchanges heat with combustion air, Mist heat recovering；
The flue-gas temperature produced during the coal-char combustion is 900-1100 DEG C, goes out the flue-gas temperature that pot type burner enters regenerator heat exchanger
For 300-500 DEG C, fine coal is 6-16 hours in the carbonization chamber residence time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510150149.2A CN104762096B (en) | 2015-03-31 | 2015-03-31 | Gas-conducting cells, gas operated device, pulverized coal pyrolysis device and method |
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| CN201510150149.2A CN104762096B (en) | 2015-03-31 | 2015-03-31 | Gas-conducting cells, gas operated device, pulverized coal pyrolysis device and method |
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| CN104762096B true CN104762096B (en) | 2017-07-14 |
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| CN105062528B (en) * | 2015-09-07 | 2017-09-29 | 浙江大学 | A kind of pyrolysis of coal multi-production process and its device suitable for coal-powder boiler |
| CN105670652B (en) * | 2016-02-26 | 2018-11-27 | 中冶焦耐(大连)工程技术有限公司 | A kind of umbrella gas-collecting structure |
| CN108192647A (en) * | 2018-01-04 | 2018-06-22 | 山西新唐工程设计股份有限公司 | A kind of low energy consumption pulverized coal pyrolysis technique |
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| US10010847B2 (en) * | 2010-11-08 | 2018-07-03 | Ohio State Innovation Foundation | Circulating fluidized bed with moving bed downcomers and gas sealing between reactors |
| CN203794835U (en) * | 2014-04-17 | 2014-08-27 | 沈阳海源干馏设备技术开发有限公司 | HY type dry distillation furnace |
| CN103923676B (en) * | 2014-04-17 | 2015-06-03 | 吴冠峰 | HY type dry distillation furnace |
| CN204509202U (en) * | 2015-03-31 | 2015-07-29 | 长安大学 | Gas-conducting cells, gas operated device and pulverized coal pyrolysis device |
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