CN104479746B - A kind of technique of energy-saving coal clean gas and device - Google Patents
A kind of technique of energy-saving coal clean gas and device Download PDFInfo
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- CN104479746B CN104479746B CN201410767796.3A CN201410767796A CN104479746B CN 104479746 B CN104479746 B CN 104479746B CN 201410767796 A CN201410767796 A CN 201410767796A CN 104479746 B CN104479746 B CN 104479746B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/30—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/34—Grates; Mechanical ash-removing devices
- C10J3/40—Movable grates
- C10J3/42—Rotary grates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
- C10J3/64—Processes with decomposition of the distillation products
- C10J3/66—Processes with decomposition of the distillation products by introducing them into the gasification zone
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/86—Other features combined with waste-heat boilers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1615—Stripping
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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
-
- 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
A kind of technique of energy-saving coal clean gas is the raw gas that broken coal passes through after gasification to extract out volume ratio 5 60% when drawing rough coal device of air (3) in the middle part of vaporizer, and the raw gas of scrubbed cooler I (5) enters I (8) recovery waste heat of waste heat boiler；Raw gas of the residual volume than 40 95% is drawn by the gas passage III in binary channels static state coal feeder (2), scrubbed cooler II (6) afterwards with from I (8) recovery waste heat of waste heat boiler, finally cooling raw gas is isolated the raw gas after condensate liquid (18) through gas-liquid separator (11) and is sent to lower procedure, and coal gas water separation device (15) recovery sent to by the condensate liquid after washing；The present invention has energy-conservation, and operating cost is low, coal dust drag-out is few, the few advantage of gas liquor containing tar.
Description
Technical field
The invention belongs to coal clean gas field, and in particular to a kind of technique of energy-saving coal clean gas and dress
Put.
Background technology
Crushed coal pressurized-gasification furnace is a kind of fixed bed coal gasifier, low due to requiring to feed coal, that is, remove heavy caking coal
Outward, remaining coal can gasify, particularly the colm of low-order coal and high ash melting point.The gasification furnace is widely applied to coal
System synthesis ammonia, methyl alcohol, dimethyl ether, artificial oil and coal gas natural gas field.As current Coal Gasification Technology is towards major diameter, height
The direction of pressure is developed, and in the unit interval, the treating capacity of coal is stepped up, and the coal filling hole as crushed coal pressure gasifying locked by coal, needs not
Carry out punching press pressure release with stopping, the growth requirement of extensive coal gasification can not be met, the coal gasification ability that in addition high pressure makes is improved,
Producing coal gas amount increases, and along with the heat endurance difference etc. of low-order coal, single gas exit necessarily takes substantial amounts of coal dust out of, leads
Cause the workshop sections such as follow-up gas washing cooling, Waste Heat Recovery to result in blockage or difficult problem is separated, while making in washing process
Excessive water washing is used, causes gas liquor yield to increase, high-grade heat drop is low.
China Patent No. is single coal lock that 200580041975.8 patent discloses employing, has list on static distribution device
The fixed bed coal gasifier of one gas exit, the gasification furnace are the crushed coal pressurized-gasification furnaces for commonly using at present, and outstanding problem is
Raw gas band dirt problem is serious, and by-product low-pressure steam is many, the problems such as dust-laden gas liquor containing tar content is many.
Chinese patent：201320037548.4 patent is disclosed using being single coal lock, without static distribution device, single coal
Gas passage, equally exists the problems referred to above.
Chinese patent：201220582157.6 patent disclose a kind of two passage cloth device for coal for coal gasifier,
By coal entrance, gas exit, inner core, the composition such as raw gas passage composition.The purpose of the patent is to reduce coal gas enrichment area, drop
Low gas speed, reduces coal dust drag-out, and with certain effect, but action effect is limited.
Chinese patent：201320118045.X a kind of rotation is all disclosed with gas distributing cylinder with 201220583000.5
Rotatable fire grate, the former is used for crushed coal pressurized-gasification furnace of the gasification furnace diameter below 4.0 meters, and the latter is arrived for 4.5 meters
5.0 meters of crushed coal pressurized-gasification furnace, the fire grate of both sizes can significantly improve the stability of coal gasification, but also can't resolve
Above-mentioned problem.
Content of the invention
In order to overcome deficiency of the prior art, an object of the present invention is to provide a kind of energy-saving coal system cleaning combustion
The technique of gas.
It is a further object of the present invention to provide a kind of coal lock punching press gas consumption is low, operating cost is low, coal dust drag-out is few,
The few gasification furnace of gas liquor containing tar.
A kind of technique of energy-saving coal clean gas that the present invention is provided comprises the steps：
(1) broken coal of 5-50mm is entered vaporizer top through connection double coal lock feed arrangement, static by binary channels
After coal feeder is uniformly distributed, Action of Gravity Field is relied on slowly to decline and process drying, destructive distillation, methanation, gasification and residual from top to bottom
Each bed of carbon burning.Gasifying agent enters vaporizer bottom through gasification agent inlet, by rotation furnace grill, in the auxiliary of hot lime-ash
Under effect, burning zone bed is uniformly distributed in.In the process, ash is cooled to 300-400 DEG C, discharges gas by lime-ash floss hole
Change room；Upwardly through burning zone, in burning zone, oxygen is most of with remaining coal char combustion generates CO to gasifying agent after preheating2,
Burning zone is gasifier temperature highest region, is that other reactions on top provide heat, as hot gas rises along vaporizer
Through gasification layer, generate most of synthesis gas, continuously rise to methanation layer, and generating portion methane gas, methane gas and
Synthesis gas extracts 5-60%, the rough coal of temperature 450-700 DEG C out when drawing rough coal device of air in the middle part of methanation layer is by vaporizer
Gas, through I dedusting of cyclone separator, the rough coal for making raw gas of the dust content less than 1mg/L enter after I recovery waste heat of waste heat boiler
Temperature degree drops to 200-260 DEG C；
(2) coal sample of the raw gas of methanation layer residue 40-95% to declining when destructive distillation layer is heated, and makes coal sample
Pyrolysis output contains the hydrogen-rich volatile matter of gas, steam and tar, as gas is further up, from the volatile matter of dry distillation area
And synthesis gas is cooled down further on gasification furnace top, and coal is then preheated and is dry, double eventually through vaporizer top
Raw gas passage on passage static state coal feeder draws raw gas of the temperature between 210-300 DEG C, temperature after scrubbed cooler I
Degree is down to 200-210 DEG C, then mixes with the raw gas for dropping to 200-260 DEG C from temperature after I recovery waste heat of waste heat boiler, enters
II recovery waste heat of waste heat boiler, makes the temperature of raw gas be down to 170-190 DEG C, and gone out through gas-liquid separator separates after condensate liquid is thick
Coal gas is sent to lower procedure, and coal gas water separation device gas recovery water sent to by washing condensate liquid；
(3) gas liquor of the dust-laden washed from scrubber cooler I enters the bottom of waste heat boiler II with coal gas
Initial gross separation dirt and water, the gas liquor of most of not dust-laden are pressurizeed by coal gas washing cycling water pump and supplement Coal-gas Washing Water Using and mixes
After return to I recycling of scrubber cooler, the gas liquor of remaining dust-laden is delivered coal gas and water separator recovery, and gas liquor is separated and filled
Put after isolating dirt and oil, isolated gas liquor pressurization returns to I recycling of scrubber cooler；
(4) dust that isolates from cyclone separator II sends plant area.
(5) boiler feedwater needed for waste heat boiler II is sent into after boiler feedwater water pump is pressurized to 4.0MPa-6.0MPa
Waste heat boiler II produces the low-pressure steam that temperature is for 161-181 DEG C, and a part is fed water as waste heat boiler I, and production mesohigh steams
Vapour, another part is used as low-pressure steam product.
In order to the purpose of the present invention is realized, broken coal pressurization is invented and ash discharge gasification furnace has been done, it has included to connect double coal lock charging
Device and body of heater, have connection double coal lock feed arrangement on body of heater, and upper of furnace body has binary channels static state coal feeder, in the middle part of body of heater
There is extraction rough coal device of air in the middle part of vaporizer, lower portion of furnace body has rotation furnace grill, has gasification agent inlet and lime-ash in bottom of furnace body
Floss hole, gas of the gasification agent inlet Wei Yu rotation furnace grill and lime-ash floss hole between, in gasification agent inlet and rotation furnace grill
Body distributing barrel connects.
First, described connection double coal lock feed arrangement, it include that coal lock, coal lock valve, coal lock lower valve, coal feed point, transition
Storehouse and coal outlet, coal lock have 2, and each coal lock top is coal feed point, is that coal locks valve, coal lock bottom and connection below coal feed point
Pipe top communicates, and locks lower valve at connecting tube top equipped with coal, and connection bottom of the tube is connected with transitional storehouse, and the bottom of transitional storehouse is for producing coal
Mouthful, gas passage is locked by least one coal between 2 coal locks and be connected.
Described coal lock gas passage is made up of two ends coal lock gas passage expanding reach and middle coal lock gas passage straight section, in coal
Lock gas passage straight section arranges band built with connection coal lock access valve on coal lock gas passage expanding reach with coal lock wall connector
Foraminate baffle plate, coal lock gas passage expanding reach wall are 30-60 ° with the angle α of coal lock wall.
Between 45-65%, the aperture of aperture is 0.2-1.0 millimeter to described baffle plate percent opening.
Described coal lock gas passage is located at the position between 0.45-0.55 times of whole coal lock height.
Connection double coal lock feed arrangement as above so that coal lock gas is recycled, recycling rate reach 60% with
On.
2nd, by binary channels static state coal feeder coal sample entrance, inner core, coal sample enter gasification to described binary channels static state coal feeder
1st passage of room, coal sample enter the 2nd passage of vaporizer and raw gas passage composition, and specific structure is shown in Chinese patent
201220582157.6.
Binary channels static state coal feeder as above can also adopt symmetrical double gas passages, than single gas passage area
Increase by 50%, along with the coal gas that symmetrical gas passage extraction 30-60% is increased in the middle part of vaporizer, in prior art
The flow velocity of raw gas outlet is compared and reduces 65-80%, significantly reduces the carrying amount of dust in coal gas.
3rd, it includes to gasify that (and coal gas is logical for furnace outer wall, gasification stove internal wall to draw rough coal device of air in the middle part of described vaporizer
Road, has the gas passage of at least 2 on gasification furnace outer wall gentleization stove inwall, and gas passage is in the same water of gasification furnace outer wall
It is uniformly distributed in plane, the opening upwards of gas passage, gas passage is made up of gas passage outer wall and gas passage inwall,
Gas passage outer wall is connected with gasification furnace outer wall, and becomes the angle β of 30-45 degree, and gas passage inwall is connected with gasification stove internal wall
Connect, the baffle plate of aperture is provided with the upper middle part junction of gas passage inwall and gasification stove internal wall, in baffle plate and gasification furnace
Wall is parallel.
Described gas passage is to measure from vaporizer bottom in the position of gasification stove internal wall, is vaporizer height
0.41-0.62 times.
Between 30-40%, small aperture is 4-8 millimeter to the percent opening of the baffle plate.
The baffle plate is justified for 1/10-1/3.
The gas passage has 2-6.
The gas temperature that gas passage in the middle part of the symmetrical vaporizer in middle part as above is extracted out is high, and in by-product, pressure is steamed
Vapour, lifts steam quality.
4th, described rotation furnace grill includes the gas distributing cylinder that supporter is fixed above, and gas distributing cylinder is located at and supports
The center line of body, gas distributing cylinder have central gasifying agent central tube, and there are bell jar, gas distributing cylinder and clock in gas distributing cylinder top
It is passage of the gasifying agent in fire grate between cover, supporter is fixed on hollow rotating bottom supporter, and hollow rotating is propped up
Support body top is fixed with center rest and rotatable grate plate, and rotatable furnace plate is 5 Rotating fields of 4 layers of gas distribution or 5 layers of gas distribution
6 Rotating fields, specific structure is shown in Chinese patent 201320118045.X or 201220583000.5.
GASIFIER GRATES BY METALLOGRAPHIC EXAMINATIONS as above, that is, be provided with the rotation furnace grill of a gas distributing cylinder, it is ensured that gasifying agent is uniform
Distribution, forms stable fire bed, it is ensured that gasification furnace is run steadily in the long term.
Beneficial effects of the present invention
1) so that coal sample is arranged evenly using binary channels coal feeder, advantageously form stable fire bed.
2) third channel of binary channels coal feeder has enough circulation areas, adopts binary channels again, significantly reduces coal gas
The flow velocity of outlet, reduces the band dirt problem of raw gas, reduces the particle diameter of as-fired coal.
3) coal gas of the gasification layer gasification generation without tar is drawn in the middle part of vaporizer, and main component is methane, hydrogen, an oxygen
Change carbon and carbon dioxide, in the flow velocity for reducing top gas exit simultaneously, moreover it is possible to using 450-650 DEG C in waste heat boiler
The middle pressure steam of coal gas of high temperature production higher quality.
4) double coal lock connection, coal lock gas are recycled, and are reduced coal lock punching press and are used fresh coal gas amount, are also lifting gasification energy
Power provides a kind of possible.
5) enforcement of the invention can substantially reduce top of gasification furnace dust-laden and pitch coal tolerance, reduce dust-laden and tar coal gas
The treating capacity of water.
Description of the drawings
Fig. 1 is the process schematic representation of the present invention.
Fig. 2 is 1 front view of present invention connection double coal lock feed arrangement.
Fig. 3 is that the connection double coal lock device 1 of Fig. 2 faces operation diagram.
Fig. 4 is the A of Fig. 2 coal lock gas passway baffle plate to figure.
Fig. 5 is binary channels static state 2 front view of coal feeder.
Fig. 6 is binary channels static state 2 left view of coal feeder.
Fig. 7 is to draw 3 front view of rough coal device of air in the middle part of vaporizer.
Fig. 8 is the A of Fig. 7 gas passage mouth baffle plate to structural representation.
Fig. 9 is rotation furnace grill structural representation.
As illustrated, 1- connection double coal lock feed arrangement, 2- binary channels static state coal feeder, draw rough coal in the middle part of 3- vaporizer
Device of air, 4- rotation furnace grill, 5- scrubber cooler I, 7- washing water-circulating pump, 8- waste heat boiler I, 9- boiler feedwater water pump,
11- rough coal gas separating device, 12- gasification agent inlet, 13- ash discharging hole, 14- supplement Coal-gas Washing Water Using, 15- coal gas water separation device,
16- mesohigh steam, 17- waste heat boiler feed water, and 18- is revolved through the raw gas of separator, 19- dust-laden gas liquor containing tar, 20-
The dust that wind separator I, 22- cyclone separator I is deviate from, 24- waste heat boiler II, 25- low-pressure steam.
101- double coal lock, coal lock in left side in 101a- double coal lock, coal lock in right side in 101b- double coal lock, 102- coal lock valve,
In 102a- double coal lock, valve locked by left side coal, and in 102b- double coal lock, valve locked by right side coal, and 103- coal locks lower valve, 103a- double coal lock
Lower valve locked by middle left side coal, and coal lock lower valve in right side in 103b- double coal lock, 104- transitional storehouse, 105- coal lock gas passage, and 106- connects coal
Lock access valve, 107- connect pipeline section, connect pipeline section on the left of 107a-, connect pipeline section, 108- coal stopper plate, 109- on the right side of 107b-
Coal stopper plate aperture, 110- coal lock gas passage expanding reach, and 111- coal locks gas passage straight section, 112- coal lock gas passage expanding reach and coal
The angle α of lock outer wall, 113- coal outlet, 114- coal feed point
201- stay bolt part, the straight tube of 202- inner core, the conically shaped of 203- inner core, 204- conical sleeve, 205- straight sleeve,
206- static distribution device straight sleeve overhead gage, aperture on 207- static distribution device straight sleeve, 208- raw gas are exported, 210-
Gasification furnace outer wall, 211- gasification stove internal wall, 212- binary channels coal feeder coal sample entrance, the 1st cloth coal channel of I-coal sample, II- coal sample
2nd cloth coal channel, III- raw gas passage
Symmetrical gas passage in the middle part of 301- vaporizer, 302- baffle plate, 303- aperture, the open portion of 304- baffle plate bottom
Point, 305- gasification furnace outer wall, 306- gasification stove internal wall, the folder that the gas passage in the middle part of 307- vaporizer is formed with gasification furnace outer wall
Angle beta, the gas passage inwall in the middle part of the vaporizer in the middle part of 308- vaporizer, the gas passage outer wall in the middle part of 309- vaporizer.
401- gasifying agent flow-guiding channel, 402- upper support ring, the first qi-emitting hole of 403-, the second qi-emitting hole of 404-, 405-
First grate plate, the 3rd qi-emitting hole of 406-, the second grate plate of 407-, the 4th qi-emitting hole of 408-, the 3rd grate plate of 409-, 410-
Four grate plates, the 5th grate plate of 411-, 412- gas distributing cylinder, 413- central authorities gasifying agent central tube, 414- supporter, in 415-
Heart bracket, 416- bell jar, 417- midfoot support body, 418- bottom supporter, 419- voltage stabilizing locular wall.
Specific embodiment
The present invention is further illustrated below by specific embodiment, it should be understood that, these embodiments are only
For in more detail, specifically describe and be used, and be not to be construed as limiting the present invention in any form.
This part to used in the present invention to material and test method carry out general description.Although for realizing
Many materials used in the present invention and method of operating be it is known in the art that but the present invention still here make as detailed as possible
Description.It will be apparent to those skilled in the art that within a context, if not specified, material therefor of the present invention and method of operating are
Well known in the art.
More detailed description is done to the specific embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment 1
Ash discharge gasification furnace is done in broken coal pressurization, and it includes to connect double coal lock feed arrangement 1 and body of heater, has connection on body of heater
Double coal lock feed arrangement 1, upper of furnace body have binary channels static state coal feeder 2, have in the middle part of vaporizer and draw raw gas dress in the middle part of body of heater
3 are put, lower portion of furnace body has rotation furnace grill 4, have gasification agent inlet 12 and lime-ash floss hole 13, gasification agent inlet 12 in bottom of furnace body
Gas distributing cylinder 412 between rotation furnace grill 4 and lime-ash floss hole 13, in gasification agent inlet 12 and rotation furnace grill 4
Connection.
First, described connection double coal lock feed arrangement 1, it include that valve 102, coal lock lower valve 103 locked by coal lock 101, coal, enter
Coal mouth 114, transitional storehouse 104 and coal outlet 113, coal lock 101 have 2, and it is coal feed point 114 that 101 tops locked by each coal, coal feed point
114 lower sections are that valve 102 locked by coal, and coal is locked 101 bottoms and communicated with 107 top of connecting tube, at 107 top of connecting tube equipped with coal lock
Valve 103,107 bottom of connecting tube are connected with transitional storehouse 104, and the bottom of transitional storehouse 104 is that 113,2 coals of coal outlet are locked between 101
Lock gas passage 105 by 1 coal to be connected.
Described coal lock gas passage 105 is to lock gas passage straight section 111 by two ends coal lock gas passage expanding reach 110 and middle coal
Composition, in coal lock gas passage straight section 111 built with connection coal lock access valve 106, positioned at coal lock gas passage expanding reach 110 and coal
Lock the baffle plate 108 that aperture 109 is provided with 1 wall connector, the angle α of 101 walls locked by 110 wall of coal lock gas passage expanding reach with coal
112 is 48 degree.
Described 108 percent opening of baffle plate is 49%, and the aperture of aperture 109 is 0.2 millimeter.
Described coal lock gas passage 105 is located at the position of 0.48 times of whole coal lock height.
Double coal lock feed arrangement 1 described above realizes alternation by following steps：When coal lock 101a is in normal pressure
During state, corresponding coal lock lower valve 103a is closed, and the coal in coal bunker is added after normal pressure coal lock 101a, is closed and corresponds to
Coal lock valve 102a, while another coal lock 101b is sent into coal vaporizer, works as coal through transitional storehouse 104 under gravity
After sample all sends into vaporizer, coal lock 101b is filled with high pressure gas, now closes coal lock lower valve 103b of the coal lock, opens
High pressure coal full of coal gas is locked 101b and has been loaded between the normal pressure coal lock 101a of coal sample and connects coal lock access valve 106, treats two
(101a and 101b pressure is equal, closes two coal lock 101a and 101b connection coal lock access valves 106 of connection, then for individual coal lock
Extract the coal gas in the coal lock 101b now not coaling out, so that coal lock 101b is coaling to after normal pressure, 101a and 101b locked by two coals
Alternation, carries out the filling of coal sample, and coal lock gas more than 60% is recycled.
The inner core of the 2nd, described binary channels static state coal feeder 2 is made up of straight tube 202 and conically shaped 203, straight tube 202
Top is opening, and straight tube 202 is connected with 203 small end of conically shaped, is fixed with mitriform sleeve, mitriform sleeve on the top of straight tube 202
It is made up of conical sleeve 204 and straight sleeve 205,205 diameter of straight sleeve is less than the outside diameter of conical sleeve 204,
Plate washer 206 is fixed with 205 outer wall of straight sleeve, and the free end of baffle plate 206 is downward, in the straight sleeve 205 of 206 position of plate washer
Aperture 207, gas exit and stay bolt part 201 is provided with wall, forms raw gas passage III, inner core between mitriform sleeve and inner core
Straight tube 202 be the 1st passage I that coal enters gasification furnace, form coal between mitriform sleeve and gasification stove internal wall and enter gasification furnace
2nd passage II.Binary channels static state coal feeder 2 can also adopt symmetrical double raw gas passages III.
Above-mentioned binary channels static state coal feeder 2 realizes uniform coal distributor by following steps：The coal of vaporizer is entered through gas
Change indoor binary channels static state coal feeder 2, the coal feeder is made up of the straight tube 202 of inner core and the conically shaped 203 of inner core, defines
The channel structure of coal sample, makes a coal sample part enter gasification furnace by the 1st passage I, and another part is by mitriform sleeve and gas
Change the entrance gasification furnace of the 2nd passage II for forming between stove inwall that coal enters gasification furnace, so reach uniform coal sample arrangement.Gasification
The coal gas of generation passes through to form III extraction gasification furnace of raw gas passage between mitriform sleeve and inner core.
3rd, rough coal device of air 3 is drawn in the middle part of described vaporizer, it includes gasify furnace outer wall 305, gasification stove internal wall 306
With gas passage 301, the gas passage 301 of 2, gas passage is had on gasification furnace outer wall 305 and gasification stove internal wall 306
301 are uniformly distributed in gasification 305 same level of furnace outer wall, the opening upwards of gas passage 301, and gas passage 301 is by coal
Gas channel outer wall 309 and gas passage inwall 308 constitute, and gas passage outer wall 309 is connected with gasification furnace outer wall 305, and becomes 42
The angle β 307 of degree, gas passage inwall 308 are connected with gasification stove internal wall 306, in gas passage inwall 308 with gasification furnace
The upper middle part junction of wall 306 is provided with the baffle plate 302 of aperture 303, and baffle plate 302 is parallel with gasification stove internal wall 306.
Gas passage 301 is to measure from vaporizer bottom in the position of gasification stove internal wall 306, is vaporizer height
0.41 times.The percent opening of baffle plate 302 is that 303 aperture of aperture is 8 millimeters between 30.Baffle plate 302 is 1/3 circle.
4th, vaporizer bottom is provided with the fire grate sub-device 4 of rotation includes gas distributing cylinder that supporter 414 is fixed above
412, gas distributing cylinder 412 is located at the center line of supporter 414, and gas distributing cylinder 412 has central gasifying agent central tube 413,
There is bell jar 416 on gas distributing cylinder top, is passage of the gasifying agent in fire grate between gas distributing cylinder 412 and bell jar 416,
Support body 414 is fixed on hollow rotating bottom supporter 418, and 418 top of hollow rotating supporter is fixed with center rest 415
With rotatable grate plate, rotatable furnace plate is 5 Rotating fields of 4 layers of gas distribution.First grate plate 405 be followed successively by from top to bottom, second
Grate plate 407, the 3rd grate plate 409, five layers of fire grate knot of 4 layers of gas distribution of the 4th grate plate 410 and the 5th grate plate 411
Structure, the upper support positioned at 405 top of the first grate plate are used for supporting upper support ring 402 and voltage stabilizing locular wall 419.Two stoves
A gasifying agent flow-guiding channel 401 is formed between grate plate, and gasifying agent is by the gas opened on the upper support ring 402 under grate plate
The first qi-emitting hole of agent 403, the second qi-emitting hole 404, the 3rd qi-emitting hole 406, the 4th qi-emitting hole 408 uniformly enter gasifying agent and lead
Circulation road 401, carries out heat exchange subsequently into gasification furnace and lime-ash.
Using aqueous 35% low order coal gasification, vapor pressure is 4.0MPa, 1050 DEG C of gasification temperature, and coal sample is through broken
It is 5-50mm coal sample to obtain particle diameter after broken, screening, loads coal bunker and gets raw material ready for gasification, then carries out reality by following steps
Apply：
The broken coal of 5-50mm is entered vaporizer top through connection double coal lock feed arrangement 1, by binary channels static state cloth
After coal device 2 is uniformly distributed, Action of Gravity Field is relied on slowly to decline and from top to bottom through drying, destructive distillation, methanation, gasification and carbon residue
Burn each bed.Gasifying agent enters vaporizer bottom through gasification agent inlet 12, by rotation furnace grill 4, in the auxiliary of hot lime-ash
Help under effect, be uniformly distributed in burning zone bed.In the process, ash is cooled to 350 DEG C, discharges gas by lime-ash floss hole 13
Change room；Upwardly through burning zone, in burning zone, oxygen is most of with remaining coal char combustion generates CO to gasifying agent after preheating2,
Burning zone is gasifier temperature highest region, is that other reactions on top provide heat, as hot gas rises along vaporizer
Through gasification layer, generate most of synthesis gas, continuously rise to methanation layer, and generating portion methane gas, methane gas and
Extraction 58% when synthesis gas draws rough coal device of air 3 in the middle part of methanation layer is by vaporizer, the raw gas that 480 DEG C of temperature, warp
I 20 dedusting of cyclone separator, the rough coal for making raw gas of the dust content less than 1mg/L enter after I 8 recovery waste heat of waste heat boiler
Temperature degree drops to 235 DEG C.
Coal sample of the raw gas of methanation layer residue 42% to declining when destructive distillation layer is heated, and is pyrolyzed coal sample and is produced
Go out the hydrogen-rich volatile matter containing gas, steam and tar, as gas is further up, from volatile matter and the synthesis of dry distillation area
Gas is cooled down further on gasification furnace top, and coal is then preheated and dry.Eventually through on binary channels static state coal feeder 2
Raw gas passage III draw raw gas of the temperature between 215 DEG C, after scrubbed cooler I 5, temperature is down to 195 DEG C or so,
Then mix with the raw gas that 235 DEG C are dropped to from temperature after I 8 recovery waste heat of waste heat boiler, enter the recovery of waste heat boiler II 24 remaining
Heat, makes the temperature of raw gas be down to 180 DEG C, isolates the raw gas after condensate liquid 18 through gas-liquid separator 11 and is sent to downstream work
Sequence, washing condensate liquid send to 15 gas recovery water of coal gas water separation device.
The gas liquor of the dust-laden washed from scrubber cooler I 5 enters the bottom of waste heat boiler II 24 with coal gas
Initial gross separation dirt and water, the gas liquor of most of not dust-laden are pressurizeed by coal gas washing cycling water pump 7 and supplement Coal-gas Washing Water Using 14
The recycling of scrubber cooler I 5 is returned to after mixing, and the gas liquor of remaining dust-laden gas and water separator 15 of delivering coal is reclaimed.
The dust 22 that isolates from cyclone separator I 20 sends plant area.
Boiler feedwater 17 needed for waste heat boiler II 24 is feeding waste heat boiler after boiler feedwater water pump 9 is pressurized to 4.2MPa
Stove II 24 produces the low-pressure steam that temperature is 162 DEG C, and a part is fed water as waste heat boiler I 8, production mesohigh steam 16, separately
A part is used as low-pressure steam product 25.
Embodiment 2
Using aqueous 6% smokeless coal gasification, vapor pressure is 5.0MPa, 1250 DEG C of gasification temperature, coal sample through broken,
It is 5-50mm coal sample to obtain particle diameter after screening, loads coal bunker and gets raw material ready for gasification, is then implemented by following steps：
The broken coal of 5-50mm is entered vaporizer top through connection double coal lock feed arrangement 1, by binary channels static state cloth
After coal device 2 is uniformly distributed, Action of Gravity Field is relied on slowly to decline and from top to bottom through drying, destructive distillation, methanation, gasification and carbon residue
Burn each bed.Gasifying agent enters vaporizer bottom through gasification agent inlet 12, by rotation furnace grill 4, in the auxiliary of hot lime-ash
Help under effect, be uniformly distributed in burning zone bed.In the process, ash is cooled to 390 DEG C, discharges gas by lime-ash floss hole 13
Change room；Upwardly through burning zone, in burning zone, oxygen is most of with remaining coal char combustion generates CO to gasifying agent after preheating2,
Burning zone is gasifier temperature highest region, is that other reactions on top provide heat, as hot gas rises along vaporizer
Through gasification layer, generate most of synthesis gas, continuously rise to methanation layer, and generating portion methane gas, methane gas and
Extraction 36% when synthesis gas draws rough coal device of air 3 in the middle part of methanation layer is by vaporizer, the raw gas that 680 DEG C of temperature, warp
I 20 dedusting of cyclone separator, the raw gas for making raw gas of the dust content less than 1mg/L enter after I 8 recovery waste heat of waste heat boiler
Temperature drops to 251 DEG C.
Coal sample of the raw gas of methanation layer residue 64% to declining when destructive distillation layer is heated, and is pyrolyzed coal sample and is produced
Go out the hydrogen-rich volatile matter containing gas, steam and tar, as gas is further up, from volatile matter and the synthesis of dry distillation area
Gas is cooled down further on gasification furnace top, and coal is then preheated and dry.Eventually through on binary channels static state coal feeder 2
Raw gas passage III draw raw gas of the temperature between 220 DEG C, after scrubbed cooler I 5, temperature is down to 200 DEG C or so,
Then mix with the raw gas that 251 DEG C are dropped to from temperature after I 8 recovery waste heat of waste heat boiler, enter the recovery of waste heat boiler II 24 remaining
Heat, makes the temperature of raw gas be down to 180 DEG C or so, isolates the raw gas after condensate liquid 18 through gas-liquid separator 11 and is sent to downstream
Operation, washing condensate liquid send to 15 gas recovery water of coal gas water separation device.
The gas liquor of the dust-laden washed from scrubber cooler I 5 enters the bottom of waste heat boiler II 24 with coal gas
Initial gross separation dirt and water, the gas liquor of most of not dust-laden are pressurizeed by coal gas washing cycling water pump 7 and supplement Coal-gas Washing Water Using 14
The recycling of scrubber cooler I 5 is returned to after mixing, and the gas liquor of remaining dust-laden gas and water separator 15 of delivering coal is reclaimed.
The dust 22 that isolates from cyclone separator I 20 sends plant area.
Boiler feedwater 17 needed for waste heat boiler II 24 is feeding waste heat boiler after boiler feedwater water pump 9 is pressurized to 5.3MPa
Stove II 24 produces the low-pressure steam that temperature is 179 DEG C, and a part is fed water as waste heat boiler I 8, production mesohigh steam 16, separately
A part is used as low-pressure steam product 25.
Connection double coal lock device has 1 pair of symmetrical coal lock gas passage 105, is metered into gasification positioned at lower valve 103 is locked from coal
Position between the 0.52 of room height, the angle 112 that expanding reach 110 is become with coal lock outer wall is 45 °, and the percent opening of baffle plate is
52%, on coal stopper plate 108, the aperture of aperture 109 is 0.5 millimeter.
3 gas passages 101 are provided with the middle part of by gasification furnace, extract 36% raw gas out, gas passage 101 is in gasification
The position of stove inwall 106 is measured from vaporizer bottom, is 0.41 times of vaporizer height.Angle 107 is 35 degree, baffle plate
Percent opening is 6.4 millimeters in 34% aperture, 103 aperture, and baffle plate 102 is 1/6 circle, and remaining 64% raw gas by destructive distillation and is done
Raw gas passage III after dry layer through vaporizer top is drawn.Remaining is with embodiment 1.
Embodiment 3
Para bituminous coal using aqueous 20% gasifies, and vapor pressure is 5.4MPa, 1150 DEG C of gasification temperature, and coal sample is through broken
It is 5-50mm coal sample to obtain particle diameter after broken, screening, loads coal bunker and gets raw material ready for gasification, then carries out reality by following steps
Apply：
The broken coal of 5-50mm is entered vaporizer top through connection double coal lock feed arrangement 1, by binary channels static state cloth
After coal device 2 is uniformly distributed, Action of Gravity Field is relied on slowly to decline and from top to bottom through drying, destructive distillation, methanation, gasification and carbon residue
Burn each bed.Gasifying agent enters vaporizer bottom through gasification agent inlet 12, by rotation furnace grill 4, in the auxiliary of hot lime-ash
Help under effect, be uniformly distributed in burning zone bed.In the process, ash is cooled to 350 DEG C, discharges gas by lime-ash floss hole 13
Change room；Upwardly through burning zone, in burning zone, oxygen is most of with remaining coal char combustion generates CO to gasifying agent after preheating2,
Burning zone is gasifier temperature highest region, is that other reactions on top provide heat, as hot gas rises along vaporizer
Through gasification layer, generate most of synthesis gas, continuously rise to methanation layer, and generating portion methane gas, methane gas and
Synthesis gas extracts 5% out when drawing rough coal device of air 3 in the middle part of methanation layer is by vaporizer, the raw gas that 550 DEG C of temperature, through rotation
I 20 dedusting of wind separator, the rough coal temperature for making raw gas of the dust content less than 1mg/L enter after I 8 recovery waste heat of waste heat boiler
Degree drops to 245 DEG C.
Coal sample of the raw gas of methanation layer residue 95% to declining when destructive distillation layer is heated, and is pyrolyzed coal sample and is produced
Go out the hydrogen-rich volatile matter containing gas, steam and tar, as gas is further up, from volatile matter and the synthesis of dry distillation area
Gas is cooled down further on gasification furnace top, and coal is then preheated and dry.Quiet eventually through vaporizer top binary channels
Raw gas passage III on state coal feeder 2 draws raw gas of the temperature between 235 DEG C, temperature drop after scrubbed cooler I 20
To 200 DEG C or so, then mix with the raw gas that 225 DEG C are dropped to from temperature after I 8 recovery waste heat of waste heat boiler, enter waste heat boiler
II 9 recovery waste heat of stove, makes the temperature of raw gas be down to 180 DEG C or so, isolates the rough coal after condensate liquid through gas-liquid separator 11
Gas 18 is sent to lower procedure, and washing condensate liquid is sent to coal gas water separation device 15 and reclaimed.
The gas liquor of the dust-laden washed from scrubber cooler I 5 enters the bottom of waste heat boiler II 24 with coal gas
Initial gross separation dirt and water, the gas liquor of most of not dust-laden are pressurizeed by coal gas washing cycling water pump 7 and supplement Coal-gas Washing Water Using 14
Return to scrubber cooler 5 to recycle after mixing, the gas liquor of remaining dust-laden gas and water separator 15 of delivering coal is reclaimed.
The dust 22 that isolates from cyclone separator I 20 sends plant area.
Boiler feedwater 17 needed for waste heat boiler II 24 is feeding waste heat boiler after boiler feedwater water pump 9 is pressurized to 5.9MPa
Stove II 24 produces the low-pressure steam that temperature is 167 DEG C, and a part is fed water as waste heat boiler I 8, production mesohigh steam 16, separately
A part is used as low-pressure steam product 25.
Connection double coal lock device has 1 coal lock gas passage 105, is metered into vaporizer height positioned at lower valve 103 is locked from coal
0.46 between position, the angle 112 that expanding reach 110 is become with coal lock outer wall is 33 °, the percent opening of coal stopper plate 63% it
Between, the aperture of coal stopper plate aperture 109 is 0.8 millimeter.
3 gas passages 301 are provided with the middle part of by vaporizer, extract 5% raw gas, gas passage in the middle part of vaporizer out
301 in the middle part of the vaporizer position of gasification stove internal wall 306 be to measure from vaporizer bottom, 0.45 times of vaporizer height.Folder
Angle 307 is 32 degree, and 32%, 303 aperture of aperture is 4.4 millimeters to the percent opening of baffle plate, and baffle plate 302 is 1/9 circle, remaining 95%
Raw gas passage III of the raw gas through vaporizer top after the destructive distillation and drying layer is drawn.Remaining is with embodiment 1.
Claims (7)
1. a kind of technique of energy-saving coal clean gas, it is characterised in that comprise the steps：
(1) broken coal of 5-50mm is entered vaporizer top through connection double coal lock feed arrangement (1), by binary channels static state cloth
After coal device (2) is uniformly distributed, Action of Gravity Field is relied on slowly to decline and process drying, destructive distillation, methanation, gasification and residual from top to bottom
Each bed of carbon burning, gasifying agent enter vaporizer bottom through gasification agent inlet (12), and by rotation furnace grill (4), ash is cold
But 300-400 DEG C is arrived, vaporizer is discharged by lime-ash floss hole (13)；Gasifying agent after preheating is being burnt upwardly through burning zone
In layer, oxygen is most of with remaining coal char combustion generates CO2, as hot gas rises through gasification layer along vaporizer, generate big portion
Point synthesis gas, continuously rises to methanation layer, generating portion methane gas, and methane gas and synthesis gas pass through gas in methanation layer
Change in the middle part of room when drawing rough coal device of air (3) and extract volume ratio 5-60% out, the raw gas of temperature 450-700 DEG C, through cyclonic separation
I (20) dedusting of device, the raw gas temperature for making raw gas of the dust content less than 1mg/L enter after I (8) recovery waste heat of waste heat boiler
Drop to 200-260 DEG C；
(2) coal sample of the raw gas of methanation layer residue 40-95% to declining when destructive distillation layer is heated, and is pyrolyzed coal sample
Output contains the hydrogen-rich volatile matter of gas, steam and tar, as gas is further up, from volatile matter and the conjunction of dry distillation area
Become gas to be cooled down on gasification furnace top further, and coal is then preheated and dry, eventually through vaporizer top binary channels
Raw gas passage (III) on static coal feeder (2) draws raw gas of the temperature between 210-300 DEG C, scrubbed cooler I
(5) temperature is down to 200-210 DEG C afterwards, then drops to 200-260 DEG C of rough coal with from temperature after I (8) recovery waste heat of waste heat boiler
Gas mixes, and enters II (24) recovery waste heat of waste heat boiler, makes the temperature of raw gas be down to 170-190 DEG C, through gas-liquid separator
(11) isolate the raw gas (18) after condensate liquid and lower procedure is sent to, washing condensate liquid is sent to coal gas water separation device (15) and returned
Receive gas liquor；
(3) gas liquor of the dust-laden washed from scrubber cooler I (5) enters the bottom of waste heat boiler II (24) with coal gas
Portion's initial gross separation dirt and water, the gas liquor of most of not dust-laden are pressurizeed by coal gas washing cycling water pump (7) and supplementary gas washing
The recycling of scrubber cooler I (5) is returned to after water (14) mixing, and the gas liquor of remaining dust-laden is delivered coal gas and water separator (15)
Reclaim, after coal gas water separation device (15) isolates dirt and oil, isolated gas liquor pressurization returns to scrubber cooler I
(5) recycle；
(4) dust (22) that isolates from cyclone separator I (20) sends plant area；
(5) boiler feedwater (17) needed for waste heat boiler II (24) is to be pressurized to 4.0MPa-6.0MPa through boiler feedwater water pump (9)
Send into waste heat boiler II (24) afterwards and the low-pressure steam that temperature is for 161-181 DEG C produced, a part is fed water as waste heat boiler I (8),
Production mesohigh steam (16), another part is used as low-pressure steam product (25)；
Ash discharge gasification furnace is done in the broken coal pressurization that above-mentioned technique is used, and it includes to connect double coal lock feed arrangement (1) and body of heater,
There is connection double coal lock feed arrangement (1) on body of heater, upper of furnace body has binary channels static state coal feeder (2), has gasification in the middle part of body of heater
Rough coal device of air (3) is drawn in the middle part of room, lower portion of furnace body has rotation furnace grill (4), bottom of furnace body have gasification agent inlet (12) and
Lime-ash floss hole (13), gasification agent inlet (12) Wei Yu rotation furnace grill (4) and lime-ash floss hole (13) between, gasification agent inlet
(12) it is connected with the gas distributing cylinder (412) in rotation furnace grill (4)；
Described connection double coal lock feed arrangement (1), it include coal lock (101), coal lock valve (102), coal lock lower valve (103),
Coal feed point (114), transitional storehouse (104) and coal outlet (113), coal lock (101) have 2, and each coal lock (101) top is coal feed point
(114) it is, that valve (102) locked by coal below coal feed point (114), coal lock (101) bottom is communicated with connecting tube (107) top, even
Equipped with coal lock lower valve (103), connecting tube (107) bottom is connected with transitional storehouse (104), transitional storehouse (104) at adapter (107) top
Bottom is coal outlet (113), locks gas passage (105) by least one coal and be connected between 2 coals lock (101)；
In the middle part of described vaporizer draw rough coal device of air (3) it include gasify furnace outer wall (305), gasification stove internal wall (306) and
Gas passage (301), has the gas passage (301) of at least 2 in gasification furnace outer wall (305) and gasification stove internal wall (306),
Gas passage (301) is uniformly distributed in gasification furnace outer wall (305) same level, the opening upwards of gas passage (301), coal
Gas passage (301) is made up of gas passage outer wall (309) and gas passage inwall (308), gas passage outer wall (309) with gasification
Furnace outer wall (305) connects, and becomes the angle β (307) of 30-45 degree, and gas passage inwall (308) is with gasification stove internal wall (306) even
Connect, the baffle plate of aperture (303) is provided with the upper middle part junction of gas passage inwall (308) and gasification stove internal wall (306)
(302), baffle plate (302) is parallel with gasification stove internal wall (306)；
Described gas passage (301) is to measure from vaporizer bottom in the position of gasification stove internal wall (306), is that vaporizer is high
0.41-0.62 times of degree；
Between 30-40%, aperture (303) aperture is 4-8 millimeter to the percent opening of baffle plate (302), and baffle plate (302) is 1/
10-1/3 justifies.
2. ash discharge gasification is done in the broken coal pressurization that a kind of technique of energy-saving coal clean gas is used as claimed in claim 1
Stove, it is characterised in that described coal lock gas passage (105) is led to by two ends coal lock gas passage expanding reach (110) and middle coal lock gas
Road straight section (111) constitutes, and in coal lock gas passage straight section (111) built with connection coal lock access valve (106), leads to positioned at coal lock gas
Road expanding reach (110) locks the baffle plate (108) for being provided with aperture (109) on (101) wall connector with coal, and coal lock gas passage expands
Section (110) wall is 30-60 ° with the angle α (112) of coal lock (101) wall；
Between 45-65%, the aperture of aperture (109) is 0.2-1.0 millimeter to described baffle plate (108) percent opening.
3. ash discharge gasification is done in the broken coal pressurization that a kind of technique of energy-saving coal clean gas is used as claimed in claim 1
Stove, it is characterised in that described coal lock gas passage (105) is located at the position between 0.45-0.55 times of whole coal lock height.
4. ash discharge gasification is done in the broken coal pressurization that a kind of technique of energy-saving coal clean gas is used as claimed in claim 1
Stove, it is characterised in that described binary channels static state coal feeder (2) is by binary channels static state coal feeder coal sample entrance (212), inner core, coal
Sample enters the 1st passage (I) of vaporizer, and coal sample enters the 2nd passage (II) of vaporizer and raw gas passage (III) composition.
5. ash discharge gasification furnace is done in broken coal pressurization as claimed in claim 4, it is characterised in that described binary channels static state coal feeder
(2) symmetrical double raw gas passage (III) is adopted.
6. ash discharge gasification is done in the broken coal pressurization that a kind of technique of energy-saving coal clean gas is used as claimed in claim 1
Stove, it is characterised in that gas passage (301) have 2-6.
7. ash discharge gasification is done in the broken coal pressurization that a kind of technique of energy-saving coal clean gas is used as claimed in claim 1
Stove, it is characterised in that the gas distributing cylinder (412) that described rotation furnace grill (4) is fixed above including supporter (414), gas
Distributing barrel (412) is located at the center line of supporter (414), and gas distributing cylinder (412) has central gasifying agent central tube (413),
There is bell jar (416) on gas distributing cylinder top, is gasifying agent in fire grate between gas distributing cylinder (412) and bell jar (416)
Passage, supporter (414) are fixed on hollow rotating bottom supporter (418), hollow rotating bottom supporter (418) top
Center rest (415) and rotatable grate plate is fixed with, rotatable grate plate is 5 Rotating fields of 4 layers of gas distribution or 5 layers of gas distribution
6 Rotating fields.
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| US4764184A (en) * | 1986-01-10 | 1988-08-16 | Sasol Operations (Proprietary) Limited | Apparatus for the gasification of coal |
| CN1715160A (en) * | 2005-07-11 | 2006-01-04 | 西安热工研究院有限公司 | Dry coal pressure closed phase conveyer with several discharge branches |
| CN101072851A (en) * | 2004-12-08 | 2007-11-14 | 萨松卢尔吉技术有限公司 | Fixed bed coal gasifier |
| CN202954006U (en) * | 2012-11-07 | 2013-05-29 | 赛鼎工程有限公司 | Double-channel coal distribution device for coal gasifier |
| CN203295456U (en) * | 2013-03-15 | 2013-11-20 | 辽宁大唐国际阜新煤制天然气有限责任公司 | Rotary furnace grate and broken coal pressure gasification furnace comprising same |
| CN103436296A (en) * | 2013-09-11 | 2013-12-11 | 上海泽玛克敏达机械设备有限公司 | Slag gasifier for pressurized fixed bed |
| CN203782113U (en) * | 2014-04-09 | 2014-08-20 | 山西大土河焦化有限责任公司 | Continuous gasifying furnace adopting pure oxygen and steam as gasifying agent |
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2014
- 2014-12-11 CN CN201410767796.3A patent/CN104479746B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4764184A (en) * | 1986-01-10 | 1988-08-16 | Sasol Operations (Proprietary) Limited | Apparatus for the gasification of coal |
| CN101072851A (en) * | 2004-12-08 | 2007-11-14 | 萨松卢尔吉技术有限公司 | Fixed bed coal gasifier |
| CN1715160A (en) * | 2005-07-11 | 2006-01-04 | 西安热工研究院有限公司 | Dry coal pressure closed phase conveyer with several discharge branches |
| CN202954006U (en) * | 2012-11-07 | 2013-05-29 | 赛鼎工程有限公司 | Double-channel coal distribution device for coal gasifier |
| CN203295456U (en) * | 2013-03-15 | 2013-11-20 | 辽宁大唐国际阜新煤制天然气有限责任公司 | Rotary furnace grate and broken coal pressure gasification furnace comprising same |
| CN103436296A (en) * | 2013-09-11 | 2013-12-11 | 上海泽玛克敏达机械设备有限公司 | Slag gasifier for pressurized fixed bed |
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