CN106867590A - A kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace and gasification process - Google Patents
A kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace and gasification process Download PDFInfo
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- CN106867590A CN106867590A CN201710240395.6A CN201710240395A CN106867590A CN 106867590 A CN106867590 A CN 106867590A CN 201710240395 A CN201710240395 A CN 201710240395A CN 106867590 A CN106867590 A CN 106867590A
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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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—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
- C10J3/72—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
- C10J3/86—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
- 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
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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
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
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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
- 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]
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace and gasification process,Gasification furnace is integrated,Including a metal pressure-bearing shell,The gasification/burn room being sequentially communicated is coaxially provided with from top to bottom in metal pressure-bearing shell,One radiation waste pot and a scrubbing-cooling chamber,The cylinder of gasification/burn room,A gasification/burn room cylinder water-cooling wall and a gasification/burn room cinder notch water-cooling wall are equipped with the cinder notch of bottom respectively,At the upper entrance of radiation waste pot,Radiation waste pot entrance water-cooling wall is equipped with direct tube section and lower part outlet respectively,One radiation waste drum body water-cooling wall and radiation waste pot outlet water-cooling wall,Scrubbing-cooling chamber includes extending the down-comer being connected with axis at the lower part outlet of radiation waste pot,A chilling ring is additionally provided with above down-comer,The top of chilling ring,A syngas outlet is additionally provided with the side wall of scrubbing-cooling chamber.The gasification furnace and the gasification process thermal efficiency that the present invention is provided are high, and reduced investment, Suitability of Coals is wide.
Description
Technical field
The present invention relates to Coal Gasification Technology field, and in particular to a kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace
And gasification process.
Background technology
With the fast development of national economy, China is faced the energy utilization rate brought using fossil energies such as coals and asked
Topic and environmental problem are increasingly serious, are badly in need of researching and developing the coal utilization technology of efficient cleaning.Air-flow bed coal-gasification technology is whole
Core status are in coal clean utilization technology, gasification energy efficiency is further improved, the applicability for expanding raw material is the hair of the technology
Exhibition direction.Exploitation efficiently, the air-flow bed coal-gasification technology of cleaning to propulsion coal high-efficiency clean utilization, preserve the ecological environment, protect
Barrier national energy security etc. is significant.
Coal gasification course is carried out under high temperature, high pressure, and it is that raising coal gasification is whole rationally to reclaim synthesis gas high temperature sensible heat
The important step of body efficiency, rationally efficiently energy regenerating is remarkably improved whole efficiency, reduces cost.Coal Gasification Technology is from admittedly
Fixed (movement) bed, is on the one hand the requirement for adapting to maximization, it is often more important that in order to expand gas to fluid bed, then to air flow bed
Adaptability of the change technology to coal.The property of feed coal can influence the ash fusion point of gasification result, particularly feed coal, its direct pass
The reaction temperature of gasification furnace is tied to, therefore should be developed suitable for high ash melting point coal gasification technology, this is also Coal Gasification Technology hair
The problem that must be solved during exhibition.Based on the demand of gasification following process different product, and reclaim coal gas of high temperature sensible heat work
The difference of skill scheme, gasification process mainly includes：Chilling process and pot destroying process, the former is particularly suitable for the life of coal-based chemicals
Produce, the latter generates electricity more suitable for IGCC.
It is current in the prior art, what chilling process and pot destroying process were often all single use, chilling technology is the most
It is conventional, can be by vaporizer coal gas of high temperature out from 1300 DEG C or so Quench to 200 DEG C or so, equipment is simple, reduced investment, but
Energy recovery efficiency is low.Waste heat boiler can will go out vaporizer coal gas of high temperature and be cooled to 600 DEG C or so by 1300 DEG C or so, wherein
Heat reclaimed, and organic efficiency is high, but defect is, equipment is huge, and investment is high, and goes out the synthesis gas of radiation waste pot
In WGR it is relatively low, it is more difficult to reach the technological requirement for being directly entered shift conversion step, it is therefore necessary to develop new heat recovery
Technology.
The content of the invention
The technical problems to be solved by the invention are chilling process and pot destroying process in the gasification furnace for overcome prior art
All it is separately provided, chilling process haves the shortcomings that energy recovery efficiency is low, and pot destroying process is present, and equipment investment is big, go out spoke
The WGR penetrated in useless pot synthesis gas can not directly meet the shortcoming of subsequent conversion procedure calls, and provide a kind of useless pot Quench
Integral type water-coal-slurry water cooled wall gasification furnace and gasification process.The gasification furnace that the present invention is provided is that one kind can be to temperature gasification and high sensible heat
Reclaimed and for preparing synthesis gas (CO+H2) gasification installation.
The invention provides a kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace, the integrated knot of gasification furnace
The gasification/burn being sequentially communicated is coaxially provided with from top to bottom in structure, including a metal pressure-bearing shell, the metal pressure-bearing shell
Room, radiation waste pot and a scrubbing-cooling chamber, be equipped with respectively at the cylinder of the gasification/burn room, bottom cinder notch a gasification/
Combustion chamber cylinder water-cooling wall and a gasification/burn room cinder notch water-cooling wall, at the upper entrance of radiation waste pot, direct tube section and under
Portion exit is equipped with radiation waste pot entrance water-cooling wall, a radiation waste drum body water-cooling wall and radiation waste pot and goes out saliva respectively
Cold wall, the scrubbing-cooling chamber includes extending the down-comer being connected with axis at the lower part outlet of radiation waste pot, described
It is additionally provided with a chilling ring above down-comer, the top of the chilling ring, on the side wall of the scrubbing-cooling chamber is additionally provided with one
Syngas outlet.
It is preferred that internal diameter of the metal pressure-bearing shell at the gasification/burn room is 2.0~5.0m.
It is preferred that the metal pressure-bearing shell is at the radiation waste pot, with the isometrical setting at the scrubbing-cooling chamber.
More preferably, internal diameter of the metal pressure-bearing shell at the radiation waste pot and at the scrubbing-cooling chamber be set to 3.0~
7.0m。
It is preferred that scribbling heat-barrier material on the inwall of the metal pressure-bearing shell, gasification furnace can be further protected.It is described every
Hot material is preferably carborundum or ceramic fibre.
It is preferred that the bearing capacity of the metal pressure-bearing shell is high pressure resistant below 10.0MPa.
It is preferred that setting one along an at least horizontal plane on the body of heater top of the gasification/burn room and/or sidewall of the furnace body
Or multiple nozzles.
It is preferred that the gasification/burn room cylinder water-cooling wall is a shell and tube water-cooling wall or coil wall, inwall is scribbled
Carborundum.The selection of the water-cooling wall, can improve operation temperature, expand the applicability of coal.The gasification/burn room cylinder water-cooled
The internal diameter of wall is preferably 1.0~4.0m.
It is preferred that the gasification/burn room cinder notch water-cooling wall is the coiled water-cooling wall of taper throat structure, inwall is scribbled
Carborundum, reduces abrasion of the particle to water-cooling wall.The gasification/burn room cinder notch water-cooling wall preferably also extends perpendicularly to described
At the upper entrance of radiation waste pot, the radiation waste pot for cooperatively forming taper flaring structure with radiation waste pot entrance water-cooling wall enters
Mouthful.This is designed with and falls into radiation waste pot beneficial to gasification furnace slag, and reduces water caused by radiation waste pot entrance gas-particle two-phase backflow
Cold wall wall slag deposition phenomenon.
It is preferred that the bottom of the gasification/burn room, also vertical in the outer wall of the gasification/burn room cinder notch water-cooling wall
A metal profile is equipped with, for supporting the gasification/burn room cinder notch water-cooling wall and the radiation waste drum body water-cooling wall.
The radiation waste drum body water-cooling wall is preferably connected by the way of hanging with metal profile bottom.So that radiation waste pot
Cylinder water-cooling wall freely can expand downwards.More preferably, some perforates are also uniformly provided with the metal profile, it is ensured that gasification furnace
Top mezzanine space is connected with middle part mezzanine space sealing nitrogen.
It is preferred that being also equipped with the radiation waste pot the bottom of a pan at the lower part outlet of the radiation waste pot.
Wherein, it is preferred that the metal pressure-bearing shell and the gasification/burn room cylinder water-cooling wall, radiation waste pot
Constitute mezzanine space between cylinder water-cooling wall and the radiation waste pot the bottom of a pan, be further filled with the mezzanine space during operation with
The isobaric nitrogen of gasification operation pressure, it is to avoid because of gasification furnace overtemperature caused by synthesis gas leakage.
It is preferred that the radiation waste drum body water-cooling wall is shell and tube one side water-cooling wall, if being more preferably also evenly distributed with
Dry group fin.The quantity of the fin is preferably 4~32 groups.
It is preferred that the radiation waste pot outlet water-cooling wall is the coiled water-cooling wall of taper throat structure, and downward vertically
Extend to described in the scrubbing-cooling chamber at the position of chilling ring, play the work for protecting the chilling ring and the down-comer
With.More preferably, also carry out the built-up welding of nickel-bass alloy material and smear carborundum in the inwall of radiation waste pot outlet water-cooling wall,
So as to reduce because high-temperature synthesis gas carry the abrasions of the solid particle to water-cooling wall such as lime-ash.
It is preferred that the gasification/burn room cylinder water-cooling wall and the radiation waste drum body water-cooling wall use Natural Circulation,
The gasification/burn room cinder notch water-cooling wall and radiation waste pot outlet water-cooling wall use forced circulation.Gasification/burn room cinder notch
Water-cooling wall can reduce the circulation water consumption of forced circulation with radiation waste pot entrance integrated design.
Present invention also offers a kind of gasification process, the gasification process uses above-mentioned useless pot Quench one body swimming coal slurry water
Cold wall gasification furnace is carried out, and it comprises the following steps：By in carbon-containing fuel and oxidant feed to the gasification/burn room, gasify
The high-temperature synthesis gas and slag cocurrent of generation are downwardly into the radiation waste pot, then enter the wash cooling through the down-comer
Room, after synthesis gas is through primary wash, gasification furnace is discharged through the syngas outlet, and solid ash solid impurity particle is through the scrubbing-cooling chamber
Bottom water-bath after by the scrubbing-cooling chamber outlet at bottom discharge gasification furnace.
Wherein, the carbon-containing fuel is this area conventional substances, such as water-coal-slurry.The oxidant is this area routine thing
Matter, such as oxygen.
It is preferred that the temperature of high-temperature synthesis gas is 1100~1600 DEG C derived from the gasification/burn room.
It is preferred that the high-temperature synthesis gas are cooled to 700~1000 DEG C through radiation waste pot.By carbon-containing fuel and oxygen
The heat produced through gasification/burn reaction can partly pass through gasification/burn room cylinder water with the heat entrained by high-temperature synthesis gas
Cold wall and radiation waste drum body water-cooling wall by-product high-pressure saturated steam, effectively improve the thermal efficiency of gasification system.By gasification/combustion
The pressure rating and quality for burning the steam that room cylinder water-cooling wall and radiation waste drum body water-cooling wall recovery heat are produced can meet
The requirement that power steam generates electricity.
It is preferred that the temperature of the synthesis gas discharged from the syngas outlet of the scrubbing-cooling chamber is 150~250
℃。
It is preferred that the WGR of the crude synthesis gas of the syngas outlet discharge is more than 0.7.Synthesis gas is after Quench
WGR disclosure satisfy that the technological requirement of rear operation conversion section, effectively improve gasification efficiency, reduce the consumption of raw material.
On the basis of common sense in the field is met, above-mentioned each optimum condition can be combined, and obtain final product each preferable reality of the present invention
Example.
Positive effect of the invention is：
(1) the useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace that the present invention is provided is applied to the carbon containing combustion such as water-coal-slurry
Expect the synthesis gas preparation technology for raw material, water-cooling wall can be used for power steam with by-product high-pressure steam, through the synthesis gas after Quench
WGR can meet requirement of the conversion to steam.The gasification furnace energy-conserving and environment-protective, energy utilization rate are high, it is adaptable to Modern Coal-based Chemical
Technique and IGCC power generation system.The present invention can not only meet Modern Coal-based Chemical industry to the poor quality coal gasification need such as high ash melting point
Ask, the thermal efficiency of gasification system can also be effectively improved.
(2) the useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace that the present invention is provided, its gasification/burn room lining structure
Substituting refractory brick by water-cooling wall can improve gasification operation temperature, and the operation temperature that satisfaction is gasified to high-ash-fusion coal will
Ask, expand the applicability of coal.
(3) in a preferred scheme of the invention, metal pressure-bearing shell can be in radiation waste pot and scrubbing-cooling chamber part etc.
Footpath is set, and is easy to process and manufactures.Radiation waste pot is using the convenient manufacture of shell and tube one side water wall structure and installs, built-in fin
Exchange capability of heat is improve, device height is reduced, equipment investment is reduced.
(4) in a preferred scheme of the invention, gasification/burn room water-cooling wall and radiation waste pot water-cooling wall using following naturally
Ring, gasification/burn room cinder notch water-cooling wall and radiation waste pot outlet water-cooling wall use forced circulation, gasification/burn room cinder notch water-cooled
Wall can reduce the circulation water consumption of forced circulation with radiation waste pot entrance integrated design.
Brief description of the drawings
Fig. 1 is the structural representation of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace in the embodiment of the present invention 1.
Description of reference numerals in Fig. 1 is as follows：
In figure, 1- metal pressure-bearing shells, 2- radiation wastes pot, 3- scrubbing-cooling chambers, 11- gasification/burns room, 12- nozzles,
13- gasification/burns room cylinder water-cooling wall, 14- metal profiles, 15- gasification/burns room cinder notch water-cooling wall, 21- radiation wastes pot enters
Saliva cold wall, 22- radiation waste drum body water-cooling walls, 23- fins, 24- radiation wastes pot outlet water-cooling wall, the 25- radiation wastes pot the bottom of a pan,
31- down-comers, 32- chilling rings, 33- syngas outlets.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.The experimental technique of unreceipted actual conditions in the following example, conventionally and condition, or according to business
Product specification is selected.
Embodiment 1
A kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace is present embodiments provided, its structure is as shown in Figure 1.
The gasification furnace is integrated, including a metal pressure-bearing shell 1, the inside of the metal pressure-bearing shell 1 from
Up to it is coaxially provided with a gasification/burn room 11, radiation waste pot 2 and the scrubbing-cooling chamber 3 being sequentially communicated down, the gasification/
A gasification/burn room cylinder water-cooling wall 13 and a gasification/burn room slag are equipped with respectively at the cylinder of combustion chamber 11, bottom cinder notch
Saliva cold wall 15, is equipped with radiation waste pot and enters respectively at the upper entrance of radiation waste pot 2, at direct tube section and lower part outlet
Saliva cold wall 21, a radiation waste drum body water-cooling wall 22 and a radiation waste pot outlet water-cooling wall 24, the scrubbing-cooling chamber 3 includes
Extend the down-comer 31 being connected with axis at the lower part outlet of radiation waste pot 2, the top of the down-comer 31 is additionally provided with
One chilling ring 32, the top of the chilling ring 32, is additionally provided with a syngas outlet 33 on the side wall of the scrubbing-cooling chamber 3.
Internal diameter of the metal pressure-bearing shell 1 at the gasification/burn room 11 is 2.0~5.0m；The metal pressure-bearing
Housing 1 the radiation waste pot 2 at, with the isometrical setting at the scrubbing-cooling chamber 3；The metal pressure-bearing shell 1 is described
Radiation waste pot 2 at and the internal diameter at the scrubbing-cooling chamber 3 be set to 3.0~7.0m.The metal pressure-bearing shell 1 it is interior
Heat-barrier material carborundum is scribbled on wall；The bearing capacity of the metal pressure-bearing shell 1 is high pressure resistant below 10.0MPa.
On the body of heater top of the gasification/burn room 11 and/or sidewall of the furnace body one or many is set along an at least horizontal plane
Individual nozzle 12；The gasification/burn room cylinder water-cooling wall 13 is a shell and tube water-cooling wall or coil wall, and inwall scribbles carbonization
Silicon；The internal diameter of the gasification/burn room cylinder water-cooling wall 13 is 1.0~4.0m；The gasification/burn room cinder notch water-cooling wall 15 is
The coiled water-cooling wall of taper throat structure, inwall scribbles carborundum；The gasification/burn room cinder notch water-cooling wall 15 also vertically prolongs
Extend at the upper entrance of the radiation waste pot 2, taper flaring structure is cooperatively formed with radiation waste pot entrance water-cooling wall 21
Radiation waste pot 2 entrances.
The bottom of the gasification/burn room 11, set in the outer wall also perpendicular rings of the gasification/burn room cinder notch water-cooling wall 15
There is a metal profile 14, for supporting the gasification/burn room cinder notch water-cooling wall 15 and the radiation waste drum body water-cooling wall
22；The radiation waste drum body water-cooling wall 22 is connected by the way of hanging with the bottom of the metal profile 14；The gold
Some perforates are also uniformly provided with category supporting plate 14.
The radiation waste pot the bottom of a pan 25 is also equipped with the lower part outlet of the radiation waste pot 2；The metal pressure-bearing shell 1 with
The gasification/burn room cylinder water-cooling wall 13, the radiation waste drum body water-cooling wall 22 and the radiation waste pot the bottom of a pan 25 it
Between constitute mezzanine space, be further filled with the mezzanine space during using the gasifier operation and gasification operation pressure be isobaric
Nitrogen.
The radiation waste drum body water-cooling wall 22 is shell and tube one side water-cooling wall, is also evenly distributed with some groups of fins 23；
The quantity of the fin 23 is 4~32 groups；The radiation waste pot outlet water-cooling wall 24 is the coiled water-cooled of taper throat structure
Wall, and extend to downward vertically described in the scrubbing-cooling chamber 3 at the position of chilling ring 32；Also exported in radiation waste pot
The inwall of water-cooling wall 24 carries out the built-up welding of nickel-bass alloy material and smears carborundum.
The gasification/burn room cylinder water-cooling wall 13 and the radiation waste drum body water-cooling wall 22 use Natural Circulation, institute
State gasification/burn room cinder notch water-cooling wall 15 and radiation waste pot outlet water-cooling wall 24 uses forced circulation.
Embodiment 2
The present embodiment is carried out at gasification using the useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace shown in embodiment 1
Reason, its day output is day to process 2000 tonnes of coal, and specifically the parameter designing to gasification furnace is as follows：
The internal diameter 3.88m of the metal pressure-bearing shell 1 of the part of gasification/burn room 11, radiation waste pot 2 and scrubbing-cooling chamber 3
The internal diameter 4.5m of metal pressure-bearing shell 1, radiation waste pot 2 straight section heights~20.0m, the gasification/burn room cylinder water-cooling wall 13
Internal diameter be 2.8m.22 internal diameters of radiation waste drum body water-cooling wall~3.5m, 16 groups of fins 23 are along radiation waste drum body water-cooling wall 22
Circumferencial direction is evenly arranged.
Specific gasification process is as follows：
Water-coal-slurry and oxygen enter gasification furnace through nozzle 12, and portion is carried out in the gasification/burn room 11 for being lined with water-cooling wall
Divide oxidation reaction, vapor pressure 4.0MPa, gasification temperature~1300 DEG C, effective gas (CO+H2) yield 135000Nm3/h。
218 DEG C of the boiler feed temperature of vaporized/combustion chamber cylinder water-cooling wall 13 and radiation waste drum body water-cooling wall 22, pressure
Power 11.6MPa.It is 319 DEG C, pressure 11.1MPa, quantity of steam 11t/h to go out the vapor (steam) temperature of gasification/combustion chamber cylinder water-cooling wall 13；
Go out 319 DEG C of the vapor (steam) temperature of radiation waste drum body water-cooling wall 22, pressure 11.1MPa, quantity of steam 112t/h.
Gasification/burn room 11 produce~1300 DEG C of high-temperature synthesis gas enter radiation waste pot 2 with lime-ash, give up pot 2 via radiation
About 850 DEG C of the synthesis gas temperature of laggard scrubbing-cooling chamber 3 is cooled down, synthesis gas goes out about 210 DEG C of the temperature of scrubbing-cooling chamber 3.Synthesis
Gas enters WGR about 0.8 in the crude synthesis gas of conversion section by entering conversion section after washing, meets the work of CO Partial Transformations
Skill requirement.
The overall gasification performance test result of the present embodiment is specific as follows：
Gasification reaction temperature：1350℃
Radiation waste 2 outlet syngas temperatures of pot：870℃
Enter synthesis gas WGR before conversion：0.8
Byproduct steam：123t/h
Consumed than oxygen：400Nm3O2/1000Nm3(CO+H2)
Compare coal consumption：590kg coals (butt)/1000Nm3(CO+H2)
Effective gas composition (CO+H2)：81% (butt)
It can be seen that, technique of the invention is given up via radiation using useless pot and Quench combined process flow, that is, the coal gas of high temperature for going out gasification furnace
Pot 2 is cooled to 800 DEG C or so, then the temperature with water Quench required for, meets the steam-energy produced by gas heat
The requirement of operation Partial Transformation afterwards.The radiation waste 2 recyclable energy equivalent to feed coal low heat valve~10% of pot, for producing
Raw high steam, be used as power steam or driving turbine, power consumption of coal can be substantially reduced, so as to substantially reduce the energy of system
Consumption.If the gasification/burn room 11 of gasification furnace uses water wall structure simultaneously, can not only gasify poor coal (the ash content of coal
High, coal-water fluid concentration is low) can also a certain amount of steam of by-product, make the energy-saving advantage of gasification process more obvious.
Although the foregoing describing specific embodiment of the invention, it should be appreciated to those skilled in the art that these are only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art are without departing substantially from this
On the premise of the principle and essence of invention, various changes or modifications can be made to these implementation methods, but these change and repair
Change and each fall within protection scope of the present invention.
Claims (10)
1. a kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace, it is characterised in that the gasification furnace is integrated,
Including a metal pressure-bearing shell, the inside of the metal pressure-bearing shell is coaxially provided with the one gasification/combustion being sequentially communicated from top to bottom
Room, radiation waste pot and a scrubbing-cooling chamber are burnt, a gas is equipped with respectively at the cylinder of the gasification/burn room, bottom cinder notch
Change/combustion chamber cylinder water-cooling wall and a gasification/burn room cinder notch water-cooling wall, at the upper entrance of radiation waste pot, direct tube section
Go out with radiation waste pot entrance water-cooling wall, a radiation waste drum body water-cooling wall and radiation waste pot is equipped with lower part outlet respectively
Saliva cold wall, the scrubbing-cooling chamber includes extending the down-comer being connected with axis at the lower part outlet of radiation waste pot,
It is additionally provided with a chilling ring above the down-comer, the top of the chilling ring, also sets on the side wall of the scrubbing-cooling chamber
There is a syngas outlet.
2. gasification furnace as claimed in claim 1, it is characterised in that the metal pressure-bearing shell is at the gasification/burn room
Internal diameter be 2.0~5.0m；
And/or, the metal pressure-bearing shell at the radiation waste pot, with the isometrical setting at the scrubbing-cooling chamber；Preferably
Ground, internal diameter of the metal pressure-bearing shell at the radiation waste pot and at the scrubbing-cooling chamber be set to 3.0~
7.0m。
3. gasification furnace as claimed in claim 1, it is characterised in that scribble heat-insulated material on the inwall of the metal pressure-bearing shell
Material, the heat-barrier material is preferably carborundum or ceramic fibre；
And/or, the bearing capacity of the metal pressure-bearing shell is high pressure resistant below 10.0MPa.
4. gasification furnace as claimed in claim 1, it is characterised in that the body of heater top of the gasification/burn room and/or body of heater side
One or more nozzles are set along an at least horizontal plane on wall；
And/or, the gasification/burn room cylinder water-cooling wall is a shell and tube water-cooling wall or coil wall, and inwall scribbles carbonization
Silicon；
And/or, the internal diameter of the gasification/burn room cylinder water-cooling wall is 1.0~4.0m；
And/or, the gasification/burn room cinder notch water-cooling wall is the coiled water-cooling wall of taper throat structure, and inwall scribbles carbonization
Silicon；
And/or, the gasification/burn room cinder notch water-cooling wall is also extended perpendicularly at the upper entrance of the radiation waste pot, with institute
State the radiation waste pot entrance that radiation waste pot entrance water-cooling wall cooperatively forms taper flaring structure.
5. gasification furnace as claimed in claim 1, it is characterised in that the bottom of the gasification/burn room, in the gasification/combustion
The outer wall for burning room cinder notch water-cooling wall is also vertically equipped with a metal profile, for supporting the gasification/burn room cinder notch water-cooled
Wall and the radiation waste drum body water-cooling wall；
The radiation waste drum body water-cooling wall is preferably connected by the way of hanging with the bottom of the metal profile；
Some perforates are preferably also uniformly provided with the metal profile.
6. gasification furnace as claimed in claim 1, it is characterised in that be also equipped with a spoke at the lower part outlet of the radiation waste pot
Penetrate the useless pot the bottom of a pan；
The metal pressure-bearing shell and the gasification/burn room cylinder water-cooling wall, the radiation waste drum body water-cooling wall and institute
State radiation waste pot the bottom of a pan between constitute mezzanine space, be further filled with and gas in the mezzanine space during using the gasifier operation
Change the isobaric nitrogen of operating pressure.
7. gasification furnace as claimed in claim 1, it is characterised in that the radiation waste drum body water-cooling wall is shell and tube one side water
Cold wall, is preferably also evenly distributed with some groups of fins；The quantity of the fin is preferably 4~32 groups；
And/or, the radiation waste pot outlet water-cooling wall is the coiled water-cooling wall of taper throat structure, and is extended to downward vertically
Described in the scrubbing-cooling chamber at the position of chilling ring；
And/or, also the inwall in radiation waste pot outlet water-cooling wall carries out the built-up welding of nickel-bass alloy material and smears carborundum.
8. gasification furnace as claimed in claim 1, it is characterised in that the gasification/burn room cylinder water-cooling wall and the radiation
Useless drum body water-cooling wall uses Natural Circulation, the gasification/burn room cinder notch water-cooling wall and radiation waste pot outlet water-cooling wall
Using forced circulation.
9. a kind of gasification process, it is characterised in that the gasification process is using the gasification as described in any one of claim 1~8
Stove is carried out, and it comprises the following steps：By the height of generation of in carbon-containing fuel and oxidant feed to the gasification/burn room, gasifying
Warm synthesis gas and slag cocurrent are downwardly into the radiation waste pot, then enter the scrubbing-cooling chamber, synthesis through the down-comer
After gas is through primary wash, through the syngas outlet discharge gasification furnace, solid ash solid impurity particle through the scrubbing-cooling chamber bottom
Water-bath after by the scrubbing-cooling chamber outlet at bottom discharge gasification furnace.
10. gasification process as claimed in claim 9, it is characterised in that the carbon-containing fuel is water-coal-slurry, the oxidant is
Oxygen；
And/or, the temperature of high-temperature synthesis gas is 1100~1600 DEG C derived from the gasification/burn room；
And/or, the high-temperature synthesis gas are cooled to 700~1000 DEG C through radiation waste pot；
And/or, the temperature of the synthesis gas discharged from the syngas outlet of the scrubbing-cooling chamber is 150~250 DEG C, aqueous vapor
Than being more than 0.7.
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| CN201710240395.6A CN106867590A (en) | 2017-04-13 | 2017-04-13 | A kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace and gasification process |
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| CN201710240395.6A CN106867590A (en) | 2017-04-13 | 2017-04-13 | A kind of useless pot Quench integral type water-coal-slurry water cooled wall gasification furnace and gasification process |
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| CN109628149A (en) * | 2019-01-22 | 2019-04-16 | 鲁南煤化工研究院 | A kind of gasification system |
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