CN107090311A - High efficient heat recovery carries flow gasification stove - Google Patents
High efficient heat recovery carries flow gasification stove Download PDFInfo
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- CN107090311A CN107090311A CN201710421334.XA CN201710421334A CN107090311A CN 107090311 A CN107090311 A CN 107090311A CN 201710421334 A CN201710421334 A CN 201710421334A CN 107090311 A CN107090311 A CN 107090311A
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- water
- slag
- cooling
- gas
- cooling wall
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- 238000002309 gasification Methods 0.000 title claims abstract description 65
- 238000011084 recovery Methods 0.000 title claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 125
- 239000002893 slag Substances 0.000 claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 239000010802 sludge Substances 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 8
- 239000004071 soot Substances 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 5
- 235000014171 carbonated beverage Nutrition 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000005587 bubbling Effects 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 30
- 238000005516 engineering process Methods 0.000 abstract description 24
- 230000015572 biosynthetic process Effects 0.000 abstract description 18
- 238000003786 synthesis reaction Methods 0.000 abstract description 18
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 78
- 238000000034 method Methods 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000002956 ash Substances 0.000 description 9
- 239000002817 coal dust Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000003250 coal slurry Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
-
- 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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/485—Entrained flow gasifiers
-
- 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
-
- 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
- C10J3/74—Construction of shells or jackets
- C10J3/76—Water jackets; Steam boiler-jackets
-
- 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
- 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
-
- 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
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- 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
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
-
- 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
-
- 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
- C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
-
- 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
- C10J2300/1687—Integration of gasification processes with another plant or parts within the plant with steam generation
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
Flow gasification stove is carried there is provided a kind of high efficient heat recovery the invention belongs to coal chemical technology, including the vertical reactor, slag gas parallel current guide pipe, energy recovery room and the slag qi leel that are sequentially connected from top to bottom are from cooling chamber.The gasification furnace of the present invention can be in reuse coal gasification course in crude synthesis gas and liquid slag sensible heat and latent heat, heat utilization ratio is high, while improving gasification furnace efficiency of carbon con version, solves the problem of crude synthesis gas band lime-ash is serious.
Description
Technical field
The invention belongs to coal chemical technology, it is related to a kind of flow gasification stove of carrying.
Background technology
At present, Coal Gasification Technology is the key technology of the peace and quiet trans-utilization of coal.Large-scale entrained flow bed gasification technology is due to height
Warm high pressure height is effectively synthesized Gas content and is widely used in big moulded coal base alkene, coal-based methanol, coal gas, coal liquifaction and coal
In terms of gasification coproduction.Coal Gasification Technology is different according to entered material shape, can be divided into water coal slurry pressurized gasification technology, broken coal pressurization
Gasification technology and dry coal powder pressure gasifying technology；Chilling process air flow bed pressurized gasification skill is divided into according to the recovery of heat energy after gasification
Art and pot destroying process air flow bed pressurized gasification technology.
The ripe large-scale Coal Gasification Technology of now conventional foreign countries mainly has Texaco's water coal slurry pressurized gasification technology, SHELL
Dry coal powder gasification technology and GSP dry coal powder pressure gasifying technologies；Domestic large-scale Coal Gasification Technology mainly has " the peaceful stove of god " dry pulverized coal
Pressurized gasification technology, multi-nozzle opposed water coal slurry pressurized gasification technology, space flight dry coal powder pressure gasifying technology.Except Texaco and
SHELL stoves be pot destroying process air flow bed pressurized gasification technology outside, it is other use chilling process gasification technology.Relative to useless pot stream
Cheng Eryan, chilling process gasification technology heat energy utilization is low, water resource waste is serious.Comparatively, pot destroying process Carbureted heat energy profit
High with rate, can produce middle high-pressure steam is used for advanced integrated coal gasification combined cycle system.
The SHELL gasification furnaces of existing commercial Application are slag, the waste boiler process entrained flow gasification furnace of qi leel stream, and synthesis gas is from gasification
After the export of ceiling portion, first using the partially synthetic gas after postorder wash cooling, by it by 1400-1600 DEG C of Quench to 900 DEG C of left sides
The right side, enters back into useless pot and reclaims heat；And temperature is then introduced directly into slag in 1400-1600 DEG C of high temperature sludge by vaporizer bottom after gasifying
Bathing pool Quench.This technical equipment is complicated, and investment cost is high and due to slag qi leel stream, substantial amounts of high-grade heat energy recovery rate
Difference.Texaco's water coal slurry pressurized gasification technology uses full pot destroying process pressurized gasification technology, and heat utilization rate is high, but due to radiation
The useless pot of convection current that useless pot is followed by, its inlet temperature is of a relatively high, synthesis gas dust burdening is higher, and fine ash adhesion heat exchanger tube causes convection current
Useless pot heat transfer effect is poor, and equipment corrosion speed is accelerated, while Texaco gasifier coal feeding amount is relatively low, it is impossible to adapt to large-scale gasification
Combined cycle generation.
The content of the invention
It is an object of the invention to：The high efficient heat recovery for provide a kind of heat energy recovery rate height, energy-conserving and environment-protective, maximizing is taken
With flow gasification stove, to solve the above mentioned problem of pot destroying process appearance.
The high efficient heat recovery of the present invention carries vertical reactor, the slag gas that flow gasification stove includes being sequentially connected from top to bottom
Parallel current guide pipe, energy recovery room and slag qi leel from cooling chamber, wherein,
The vertical reactor includes shell, cooling dome and the outlet of high temperature sludge gas；The top of the vertical reactor or in
Top is connected by flange with burner, and the cooling dome is set inside the shell, and annular space chamber is formed between shell and cooling dome
Combustion chamber is formed on the inside of body, cooling dome, cooling dome lower end exports for high temperature sludge gas, is connected with slag gas parallel current guide pipe；
The slag gas parallel current guide pipe includes shell and inner tube, the shell and vertical reactor cage connection, described interior
The circular cylinder body that pipe is surround by multiple single tubes is formed by welding straggly, inner tube upper end connection vertical reactor high temperature sludge gas
Outlet, lower end connection energy recovery room；
The energy recovery room include shell, the first water-cooling wall, the second water-cooling wall and emergent waterfog head, the shell with
The cage connection of slag gas parallel current guide pipe, first water-cooling wall is arranged in shell, is the cylinder being made up of multiple cooling water pipes
Shape water-cooling wall, the tubular water-cooling wall and shell are coaxial；The screen formula water-cooling wall that second water-cooling wall is made up of multiple tubulations, it is multiple
Tubulation is arranged from the first water-cooling wall to axle center, and multiple second water-cooling walls are uniformly distributed in the middle of the first water-cooling wall；First water-cooling wall
And second form slag gas passage between water-cooling wall；The first water-cooling wall lower end is provided with lower cone, and lower cone end forms slag gas
Outlet；Emergent waterfog head set inside the housing, the lower section of the first water-cooling wall and the second water-cooling wall, through under the first water-cooling wall
Cone is stretched into energy recovery room, and waterfog head of meeting an urgent need is straight at 0~15 ° of angle；
The slag qi leel includes outer wall, slag gas separating pipe, slag bathroom and syngas outlet, the outer wall and heat from cooling chamber
The cage connection of energy recovery room；The slag gas separating pipe is made up of center pipe of the top with cooling coil or chuck,
The entrance of the slag gas separating pipe and the slag gas outlet of energy recovery room, the outlet of slag gas separating pipe connect with slag bathroom,
Slag bathroom lower end sets slag notch；Air guide chamber is formed between outer wall and slag the gas separating pipe, syngas outlet is arranged on outer wall
On, with air guide chamber gas connection.
Preferably, soot blowing shower nozzle and rapping apparatus are additionally provided with the energy recovery room, the soot blowing shower nozzle is arranged on
Paraxial heart side on first water-cooling wall, rapping apparatus is arranged on the first water-cooling wall and the second water-cooling wall；It is further preferred that institute
Soot blowing rapping apparatus is stated for mechanical shaking device, ultrasonic wave rapping apparatus or electromagnetic rapping device.
Preferably, the outfall sewer of second water-cooling wall constitutes carbonated drink collector, positioned at shell and the first water-cooling wall it
Between confined space top, the water inlet manifold of the second water-cooling wall constitutes water knockout drum, positioned at the lower section of the second water-cooling wall.Described
The outfall sewer and water inlet manifold of two water-cooling walls are connected respectively with each tubulation of the second water-cooling wall.
Preferably, the multiple cooling water pipe is 50~200；Preferably, the multiple tubulation is 2~12；It is described
Multiple second water-cooling walls are 4~24.
Preferably, the cooling dome of the vertical reactor is spiraled by 2-7 root pipelines and formed, cooling dome and the high temperature sludge gas
Outlet is film water cold wall structure, and surface is straggly to be welded with multiple stainless steel anchor studs and smear ramming mass.
Preferably, the diameter ratio of the energy recovery room and the combustion chamber of vertical reactor is 1~5, preferably 1~2.5；
The height of energy recovery room is 3~10, preferably 4~8 with diameter ratio.
Preferably, the middle and upper part of the slag gas separating pipe is provided with water smoke ring or waterfog head.
Preferably, when the slag gas separating pipe stretches into slag bathroom, the air guide intracavitary is provided with brokenly bubble plate or foam-breaking strip；
When the slag gas separating pipe does not enter slag bathroom, the gasification furnace is additionally provided with bubble tower, the gas access of bubble tower and gas
Change the syngas outlet connection of stove.
Preferably, the burner can be 1~5；Led it is further preferred that the burner internal is provided with coal dust
To plate and oxygen spiral board.
Preferably, the syngas outlet is apart from slag bathroom liquid level maximum distance.
The gasification furnace of the present invention, being capable of crude synthesis gas and liquid slag in reuse coal gasification course by setting energy recovery room
In sensible heat and latent heat, the mesohigh steam of generation can carry out coal chemical industry coproduction generating, compared with traditional thermal power generation, can carry
High net efficiency more than 5%；By the setting number for adjusting burner and the height and diameter ratio that determine equipment, gasification furnace can be achieved
The maximization of scale, makes gasification furnace day throw coal and is more than 2000 tons；, can by setting emergent waterfog head in energy recovery room bottom
Effectively realize when energy recovery room causes heat transfer effect poor due to lime-ash covering water-cooling wall, can be sprayed by the emergent water smoke of regulation
Head water size, the slag gas for going out energy recovery room is cooled and washed, at the same using gas solid separation principle slag qi leel from
Slag gas is separated in device, prevents fine slag from entering synthesis gas washing process, abrasion of the synthesis gas dust-carrying capacity to lower workshop section is reduced.
Brief description of the drawings
Fig. 1 is gasification furnace structure schematic diagram, when wherein A stretches into slag bathroom for slag gas separating pipe, sets brokenly bubble plate or brokenly bubble
The scheme of bar；When B is that slag gas separating pipe does not stretch into slag bathroom, the another scheme that bubble tower is set；
Fig. 2 is energy recovery room fin panel casing distribution map；
In figure：1- vertical reactors, 2- energy recoveries room, 3- slags qi leel is from cooling chamber, 4- turbulent burners, and 5- slags gas is simultaneously
Stream guide pipe, 6- slags bathroom, 7- bubble towers, 11- vertical reactor shells, 12- cooling domes, 13- combustion chambers, 14- adpting flanges,
15- annular space cavitys, the outlet of 16- high temperature sludges gas, 21- energy recovery chamber enclosures, the water-cooling walls of 22- first, the water-cooling walls of 23- second, 24-
Slag gas passage, 26- meets an urgent need waterfog head, 31- slag gas separating pipes, 32- air guide chambers, 33- syngas outlets, 34- water smokes ring or water
Fog spray head.
Embodiment
With reference to specific embodiment, the invention will be further described.All features disclosed in this specification, or it is public
All methods for opening or during the step of, can group in any way in addition to mutually exclusive speciality or/or step
Close, unless specifically stated otherwise, can alternative features equivalent by other or with similar purpose replaced, i.e. except non-specifically is chatted
State, one embodiment in a series of equivalent or similar characteristics of each feature.
The high efficient heat recovery of the present invention carries flow gasification stove, mainly using dry pulverized coal as raw material, applied to large-scale coal chemical industry,
Coal liquifaction field or IGCC power generation system.The technological process of the present invention is gasification-energy recovery-slag qi leel from cooling-washing, with
High efficiente callback heat energy.
The specific setting of the present invention is as follows：
As illustrated in fig. 1 and 2, high efficient heat recovery carries flow gasification stove, including sets be sequentially connected from top to bottom vertical
Reactor 1, slag gas parallel current guide pipe 5, energy recovery room 2 and slag air cooling room 3.
Vertical reactor 1 includes shell 11, cooling dome 12 and high temperature sludge gas outlet 16, and top passes through flange 14 and burner
4 connections.In other manner, the middle and upper part of vertical reactor can be connected by flange with burner.Shell 11 is pressure-bearing shell,
Cooling dome 12 is arranged on the inner side of shell 11, and annular space cavity 15 is formed between cooling dome 12 and shell 11.The inner side of cooling dome 12 is formed
The combustion chamber 13 of cylindrical cavity, the lower end of cooling dome 12 is high temperature sludge gas outlet 16.
Cooling dome 12 is spiraled by 6 pipelines and formed；In other manner, it can be spiraled and formed by 2~7 pipelines, this can
To be adjusted according to specific needs.Cooling dome 12 uses film water cold wall structure with high temperature sludge gas outlet 16, and surface is straggly
It is welded with multiple stainless steel anchor studs and smears ramming mass；Annular space cavity 15 and combustion chamber 13 are on gasification furnace top by between certain
Gap is connected.During operation, high pressure N is full of in the annular space cavity between pressure-bearing shell and water-cooling cover2Or high-pressure gas, its pressure is higher than
Operating pressure in reactor combustion chamber, to prevent synthesis gas, coal ash from causing the space overtemperature and corrosion into the annular space space.Hold
Pressure shell is provided with manhole, for overhauling and removing the flying dust after operation a period of time between annular space.
Burner 4 is internally provided with coal dust guide plate and oxygen spiral board, thus increase the conveying capacity and coal dust of coal dust with
Turbulence intensity of the oxygen in combustion chamber, extends residence time of the coal dust in gasification furnace, improves charcoal percent conversion.
Slag gas parallel current guide pipe 5 includes shell and inner tube, and the shell 11 of shell and vertical reactor is connected, and inner tube is by multiple
The circular cylinder body that single tube is surround passes through welding straggly and formed.The connection vertical reactor high temperature sludge gas outlet of inner tube upper end, under
End connection energy recovery room.
Energy recovery room includes shell 21, the first water-cooling wall 22, the second water-cooling wall 23 and emergent waterfog head 26.Shell 21
With the cage connection of slag gas parallel current guide pipe.As shown in Fig. 2 the first water-cooling wall 22 is arranged in shell 21, it is by multiple coolings
The tubular water-cooling wall of water pipe composition, it is coaxial with shell；In the present embodiment, cooling water pipe quantity is 88, in other embodiment party
In formula, cooling water pipe quantity can be 50~200 arbitrary value.The screen formula water cooling that second water-cooling wall 23 is made up of 5 tubulations
Wall, 5 tubulations are arranged from the first water-cooling wall to axle center, and 12 the second water-cooling walls are uniformly distributed in the middle of the first water-cooling wall.At it
In its embodiment, each second water-cooling wall can be made up of 2~12 tubulations, and the number of the second water-cooling wall can be 4~24.
The slag gas passage 24 of first water-cooling wall and the second water-cooling wall composition.Emergent waterfog head is arranged on inside shell 21, the first water cooling
The lower section of the water-cooling wall 23 of wall 22 and second.Mesohigh hot water is passed through in first water-cooling wall and the second water screen tube.High-temperature slag and
Crude synthesis gas enters behind energy recovery room, and carrying out heat exchange with the first water-cooling wall and the second water-cooling wall produces high steam.
The lower end of the first water-cooling wall of energy recovery room 22 is provided with lower cone, and lower cone end forms the outlet of slag gas, the outlet of slag gas
Entrance point with slag qi leel from cooling chamber is connected.Emergent waterfog head 26 stretches into energy recovery room through the first water-cooling wall lower cone
In 2, straight at 0~15 ° of angle.The emergent big I of waterfog head water is adjusted correspondingly according to operating mode, so that effectively
Realize when energy recovery room because lime-ash covers to enter the slag gas of outflow energy recovery room when water-cooling wall causes heat transfer effect poor
Row cooling and wash, while emergent waterfog head is located at below the second water-cooling wall, can effectively slow down lime-ash to the erosion of shower nozzle and
Block.
Soot blowing shower nozzle and rapping apparatus are additionally provided with energy recovery room 2, to the first water-cooling wall 22 and the second water-cooling wall 23
On cover ash purged and rapping, it is ensured that water-cooling wall heat transfer effect；The soot blowing shower nozzle is arranged on the first water-cooling wall 22 closely
Axle center side, rapping apparatus is arranged on the first water-cooling wall and the second water-cooling wall, and rapping apparatus is mechanical shaking device, ultrasonic wave
Rapping apparatus or electromagnetic rapping device.
Each tubulation of second water-cooling wall 23 is up and down connected respectively with outfall sewer and water inlet manifold respectively, for will cooling
Water is exported and inputted in each tubulation of the second water-cooling wall.Wherein, the outfall sewer of the second water-cooling wall constitutes carbonated drink collector, is located at
The top of confined space between shell and the first water-cooling wall, useless pot is caused to prevent melting lime-ash to be attached on air water collector
Interior slagging is built bridge.The water inlet manifold of second water-cooling wall constitutes water knockout drum, positioned at the lower section of the second water-cooling wall, for energy recovery room
The distribution of water inlet and the collection and conveying of heated rear steam.
Slag qi leel includes outer wall, slag gas separating pipe 31, slag bathroom 6 and syngas outlet 33 from cooling chamber 3.Outer wall and heat energy
The shell 21 of recovery room 2 is connected.Slag gas separating pipe 31 is carried by a top in cooling coil or the center pipe of chuck is constituted,
It is connected with the slag gas outlet of energy recovery room 2.The outlet of slag gas separating pipe 31 connects with slag bathroom 6, and the lower end of slag bathroom 6 is set out
Cinder notch.Air guide chamber 32 is formed between outer wall and slag gas separating pipe 31.Syngas outlet 33 is set on the outer wall, with the gas of air guide chamber 32
Body is connected, and syngas outlet 33 is apart from the liquid level of slag bathroom 6 apart from farthest.To prevent gas carries fine grained slag secretly from entering synthesis gas
Washing process, serious abrasion is caused to synthesis gas washing equipment and pipeline.
The middle and upper part of slag gas separating pipe 31 is provided with water smoke ring or waterfog head 34, and the slag gas of energy recovery room 2 is entered
After row primary wash, slag and crude synthesis gas are by Gravity Separation in slag gas separating pipe 31, and slag enters the slag bathroom 6 of gasification furnace,
Then follow-up Slag-water system is entered from slag notch, synthesis gas goes out from the bottom of slag gas separating pipe 31 into air guide chamber 32 from synthesis gas
Mouth 33 is gone out, into hypomere process.
The outlet of slag gas separating pipe 31 connects with slag bathroom 6, can stretch into or not stretch into slag bathroom.As shown in Figure 1A,
When slag bathroom is stretched into the outlet of slag gas separating pipe 31, brokenly bubble plate or foam-breaking strip are provided with air guide chamber 32.As shown in Figure 1B, when
When slag gas separating pipe 31 does not stretch into slag bathroom 6, the gasification furnace is additionally provided with bubble tower 7, the gas access of bubble tower 7 and gasification furnace
Syngas outlet 33 connect.
The maximization of gasification furnace scale can be achieved, height and the diameter ratio of burner number and equipment can be set.Burner
Number can be 1~5, in the present embodiment, burner be 3.Energy recovery room and the combustion chamber of vertical reactor
Diameter ratio be 1~5, preferably 1~2.5, be in the present embodiment 2；Height and the diameter ratio of energy recovery room be 3~
10, preferably 4~8, it is in the present embodiment 6.Those skilled in the art according to actual needs, can select suitable burning
Height and the diameter ratio of device number and equipment.
In practical operation, gasification furnace is admitted to through grinding dried feed coal by coal dust dense-phase transporting system vertical
Reactor, is carried out after combustion gasification reaction, high-temperature synthesis gas and molten ash cocurrent enter energy recovery with oxygen, water vapour
After HP boiler water in room, with the first water-cooling wall, the second water screen tube is exchanged heat, HP boiler water is changed into high pressure steaming
Vapour, is generated electricity into electricity generation system, and the molten ash after cooling is changed into solid lime-ash and entered together with synthesis gas by gravity
Slag qi leel discharges gasification furnace through Gravity Separation from cooling chamber, solid slag from the slag-drip opening in slag bathroom, and synthesis gas is washed by slag bathroom
Enter synthesis gas washing system from the syngas outlet on air guide chamber top after washing.
Embodiment：
Production methanol and generating so that the high efficient heat recovery of 2000 tons of coal feeding amount of separate unit day carries flow gasification stove as an example, are used
When dry pulverized coal is raw material, the efficiency of carbon con version of this gasification furnace reaches 98.5%, can produce and be effectively synthesized the Nm of gas 13.0 ten thousand3/ h or so, is closed
Cinder content is low into gas, produces the ton hour of quantity of methyl alcohol 57；Can the ton hour of by-product 10MPa steam 120, generated energy is about
32250KWh；About 90,000 tons of coal of mark can then be saved every year compared with thermal power generation, about 23.55 ten thousand tons of CO2 emission, two are reduced
About 2170 tons of sulfur oxide emissions amount, about 633 tons of nitrogen oxides；While annual recyclable 3000 tons or so of sulphur.
Claims (10)
1. a kind of high efficient heat recovery carries flow gasification stove, including be sequentially connected from top to bottom vertical reactor, slag gas cocurrent
Guide pipe, energy recovery room and slag qi leel from cooling chamber, wherein,
The vertical reactor includes shell, cooling dome and the outlet of high temperature sludge gas；The top or middle and upper part of the vertical reactor
It is connected by flange with burner, the cooling dome is set inside the shell, annular space cavity is formed between shell and cooling dome, it is cold
But cover inner side forms combustion chamber, and cooling dome lower end exports for high temperature sludge gas, is connected with slag gas parallel current guide pipe；
The slag gas parallel current guide pipe includes shell and inner tube, the shell and vertical reactor cage connection, said inner tube by
The circular cylinder body that multiple single tubes are surround is formed by welding straggly, and inner tube upper end connection vertical reactor high temperature sludge gas goes out
Mouthful, lower end connection energy recovery room；
The energy recovery room includes shell, the first water-cooling wall, the second water-cooling wall and emergent waterfog head, the shell and slag gas
The cage connection of parallel current guide pipe, first water-cooling wall is arranged in shell, is the tubular water being made up of multiple cooling water pipes
Cold wall, the tubular water-cooling wall and shell are coaxial；The screen formula water-cooling wall that second water-cooling wall is made up of multiple tubulations, multiple tubulations
Arranged from the first water-cooling wall to axle center, multiple second water-cooling walls are uniformly distributed in the middle of the first water-cooling wall；First water-cooling wall and
Slag gas passage is formed between two water-cooling walls；The first water-cooling wall lower end is provided with lower cone, and lower cone end forms the outlet of slag gas；
Emergent waterfog head set inside the housing, the lower section of the first water-cooling wall and the second water-cooling wall, through the first water-cooling wall lower cone
Stretch into energy recovery room, waterfog head of meeting an urgent need is straight at 0~15 ° of angle；
The slag qi leel includes outer wall, slag gas separating pipe, slag bathroom and syngas outlet from cooling chamber, and the outer wall is returned with heat energy
Receive the cage connection of room；The slag gas separating pipe is made up of center pipe of the top with cooling coil or chuck, described
The entrance of slag gas separating pipe and the slag gas outlet of energy recovery room, the outlet of slag gas separating pipe connect with slag bathroom, slag bath
Room lower end sets slag notch；Between outer wall and slag the gas separating pipe formed air guide chamber, syngas outlet set on the outer wall, with
Air guide chamber gas connection.
2. gasification furnace according to claim 1, wherein, soot blowing shower nozzle and rapping dress are additionally provided with the energy recovery room
Put, the soot blowing shower nozzle is arranged on paraxial heart side on the first water-cooling wall, rapping apparatus is arranged on the first water-cooling wall and the second water
In cold wall.
3. gasification furnace according to claim 2, wherein, the soot blowing rapping apparatus is mechanical shaking device, ultrasonic wave shakes
Beat device or electromagnetic rapping device.
4. gasification furnace according to claim 3, wherein, the outfall sewer of second water-cooling wall constitutes carbonated drink collector,
The top of confined space between shell and the first water-cooling wall；The water inlet manifold of second water-cooling wall constitutes water knockout drum,
Positioned at the lower section of the second water-cooling wall.
5. the gasification furnace according to any one of Claims 1 to 4, wherein, the multiple cooling water pipe is 50~200；Institute
Multiple tubulations are stated for 2~12；The multiple second water-cooling wall is 4~24.
6. gasification furnace according to claim 5, wherein, the cooling dome of the vertical reactor spiraled by 2-7 root pipelines and
Into cooling dome and high temperature sludge the gas outlet is film water cold wall structure, and surface is straggly to be welded with multiple stainless steel anchor studs
And smear ramming mass.
7. gasification furnace according to claim 6, wherein, the diameter of the combustion chamber of the energy recovery room and vertical reactor
Than for 1~5；Height and the diameter ratio of energy recovery room are 3~10.
8. gasification furnace according to claim 7, wherein, the diameter of the combustion chamber of the energy recovery room and vertical reactor
Than for 1~2.5；Height and the diameter ratio of energy recovery room are 4~8.
9. gasification furnace according to claim 8, wherein, the middle and upper part of the slag gas separating pipe is provided with water smoke ring or water smoke
Shower nozzle.
10. gasification furnace according to claim 9, wherein, when the slag gas separating pipe stretches into slag bathroom, the air guide chamber
Inside it is provided with brokenly bubble plate or foam-breaking strip；When the slag gas separating pipe does not enter slag bathroom, the gasification furnace is additionally provided with bubbling
Tower, the gas access of bubble tower and the syngas outlet of gasification furnace are connected.
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Application publication date: 20170825 |