CN102634373A - Method and equipment for preparing fuel gas - Google Patents

Method and equipment for preparing fuel gas Download PDF

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Publication number
CN102634373A
CN102634373A CN2012100820567A CN201210082056A CN102634373A CN 102634373 A CN102634373 A CN 102634373A CN 2012100820567 A CN2012100820567 A CN 2012100820567A CN 201210082056 A CN201210082056 A CN 201210082056A CN 102634373 A CN102634373 A CN 102634373A
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China
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gas
fuel
coal
transmission shaft
combustion gas
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CN2012100820567A
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CN102634373B (en
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孔令增
刘飞
杨燕
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Kong Lingzeng
Liu Fei
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/20—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/228—Extrusion presses; Dies therefor using pressing means, e.g. rollers moving over a perforated die plate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/08—Methods of shaping, e.g. pelletizing or briquetting without the aid of extraneous binders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/363—Pellets or granulates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/24—Mixing, stirring of fuel components
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/28—Cutting, disintegrating, shredding or grinding
    • 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]
    • 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
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • 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
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

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  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Solid-Fuel Combustion (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention provides a method and equipment for preparing fuel gas. The method for preparing fuel gas comprises the following steps: (1) preparing cylinder particle fuel: taking materials of crushed coal and straw cylinder particle and extruding to prepare coal and straw mixing cylinder particles, or taking materials of coal dust, water and starch and extruding to prepare coal and starch mixing cylinder particles; (2) continuously feeding fuel in the step (1) into a fuel gas producer; and (3) introducing air and steam into the fuel gas producer to be used as a gasifying agent. The fuel gas producer comprises a furnace body, an idler wheel extruder is installed at the upper end of the furnace body and is provided with a material receiving barrel, and the material receiving barrel is connected with the furnace body in an airtight mode. A fire grate is installed at the lower end of the furnace body and is connected with a second transmission shaft, a power transmission piece is installed on the second transmission shaft and is connected with a motor. According to the invention, the cylinder particles are used as fuel to replace lump coal or coke, and steam and air are introduced into the fuel gas producer to prepare fuel gas, therefore, the cleanliness and calorific value of the fuel gas are high, and the fuel gas can be used for directly driving the operation of a gas turbine.

Description

A kind of method and equipment thereof for preparing combustion gas
Technical field
The present invention relates to the preparation method of combustion gas, is a kind of method and equipment thereof for preparing combustion gas.
Background technology
Because the combustion gas that gas turbine power generation is used; Need higher multiple indexs such as calorific value, so the combustion gas that gas turbine power generation is at present used, its fuel must be smart lump coal or coke; Combustion gas cost with this fuel production is high, can't keep the normal operation of gas turbine power generation.Here it is, and the gas turbine power generation industry almost is in major cause out of service.For this reason, those skilled in the art provide pressurized water coal gas, the dried coal gas, water sauted to steam coal gas, straw fermentation and change multiple combustion gas such as alcohol, through being the internal combustion turbine use after the supercharging.But these combustion gas in use need to use the high pressure electrically trapped tar oil, and need huge dust-removal system etc., and cost of electricity-generating still can't be reduced, and simultaneously, still can't solve the high pollution problem.
Summary of the invention
The objective of the invention is, a kind of method and equipment thereof for preparing combustion gas is provided, adopting the cylinder particle is fuel; Substitute lump coal or coke; And in gas producer, feed steam simultaneously and prepare combustion gas with air, make the cleanliness factor of combustion gas, calorific value high, directly propelling gas turbine engine turns round.
The present invention is for realizing above-mentioned purpose, and realize through following technical scheme: a kind of method for preparing combustion gas comprises the steps:
1. prepare the cylinder granular fuel: get a broken coal and straw cylinder material raw material; Be crushed to coal straw mixing cylinder particle in broken coal and the ratio of the weight ratio 1:0.15-0.7 of a straw cylinder material, or get coal dust, water and starch and after the mixed of 1:0.05-0.25:0.03-0.05, be crushed to coal starch mixing cylinder particle;
2. send into step any fuel described in 1. in the gas producer continuously;
3. bubbling air and steam make the interior temperature of gas producer remain on 400-950 ℃ as vaporized chemical in gas producer.
The said cylinder granular fuel mixing cylinder granular fuel that to be broken coal and brown coal be crushed to after the mixed of 1:0.2-0.4.The air that to gas producer in feed of step described in 3. and the proportioning of steam are 1:0.15-0.5.The method that fuel continuously sent into gas producer in of step described in 2. is: the roller extrusion machine is installed on the top at gas producer; The airtight connection between roller extrusion machine and gas producer; Insert after the raw materials mix with fuel in the roller extrusion machine, through output combustion gas in the burner hearth that directly falls into gas producer after the roller extruding.
The described equipment that uses in the method for combustion gas for preparing, gas producer comprises body of heater, the roller extrusion machine is installed in the body of heater upper end; The roller extrusion machine has one to receive charging basket, receives that charging basket and body of heater are airtight to be connected, and receives to install in the charging basket first transmission shaft; Two rollers are installed on first transmission shaft, and two rollers are symmetrically distributed in the first transmission shaft both sides, and receiving below the roller installed circular steel disk on the charging basket inwall; Offer through hole on the circular steel disk, receive that the charging basket upper end is provided with opening for feed, the lower end is uncovered, the uncovered gas producer that is positioned at; Fire grate is installed in the body of heater lower end, and fire grate is connected with second transmission shaft, and body of heater bottom one side is installed scum pipe; Offer air inlet port in second transmission shaft, air inlet port communicates with gas mixing tube, is connected with blast main with vapour pipe respectively on the gas mixing tube; On second transmission shaft driving force member is installed, driving force member is connected with motor.First transmission shaft passes to two rollers through conical gear respectively with power, uniform distribution squeezing groove on the roller outside surface.First transmission shaft is connected with first conical gear, and second conical gear and the 4th conical gear mesh with first conical gear respectively, and the 3rd conical gear meshes with second conical gear and the 4th conical gear respectively, and the 3rd conical gear is connected with the 3rd transmission shaft.Scum pipe is connected with the deslagging jar, and screw shaft is installed in the scum pipe.The gas producer bottom of furnace body is installed furnace bottom circle, furnace hearth plate, and axle sleeve is installed at the furnace hearth plate middle part, and second transmission shaft is installed in the axle sleeve, and second transmission shaft connects through furnace hearth plate to be scraped ash-pan and divide ash-pan, and lime scraping knife dish top is fire grate.Described a kind of method for preparing combustion gas, the weight ratio 1:0.2-0.5 of a broken coal and a straw cylinder material in the coal straw mixing cylinder particulate fuel.
With the combustion gas of method preparation of the present invention, make vaporized chemical output gas with air, steam, through detecting: CO is 49%-60%, H 2Be 25%-30%, CH 4Be 10%-25%, CO 2<1.5%, O 2<1.2%, calorific value is 9500-17000KJm 3The direct continuous uninterrupted of fuel in the inventive method gets in the furnace chamber of gas producer, while bubbling air and steam thorough mixing, and the combustion gas cleanliness factor of generation is high, and in the production combustion gas, does not need large-scale dedusting, washing device.Fuel described in the inventive method has substituted the fuel such as smart lump coal, coke or fuel oil in the existing gas producer technology, makes broken coal become the main fuel of preparation combustion gas, has thoroughly solved the expensive difficult problem of combustion gas cost that adopts with gas turbine power generation.Because with broken coal cylinder particle is that master's fuel source abundance, cost is lower, and then the cost of the combustion gas of preparation is significantly reduced, and and then significantly reduced the cost of electricity-generating of internal combustion turbine, for gas turbine power generation provides environmental protection, energy-conservation exploitativeness combustion gas.In the method for the present invention; The steam that feeds except the heat that absorbs the reaction of carbon monoxide process and discharge with produce the pyrocarbon; Steam and carbon itself can also reduction decomposition discharge carbon monoxide and living 25% hydrogen of fecund; Thereby increased combustion gas output, and solution reaction of carbon monoxide process expended energy converts useful energy 25% to.Straw in airborne oxygen and steam and the fuel or starch mix the back and decompose to produce and contain methane, ethane or methyl alcohol, alcoholic acid clean gas, and these gases all are detonation gas, are beneficial to propelling gas turbine engine.Straw in the fuel that uses in the inventive method or starch or brown coal play catalysis in gas producer change the gas effect, and broken coal also gasifies in the stove inter-sync.Method of the present invention can make the temperature in the gas producer remain on 400 ℃-950 ℃, and the combustion gas of generation can directly be used for propelling gas turbine engine or internal combustion turbine and steam turbine combined cycle generation, with thermal power generation savings in comparison coal more than 45%.
The preferred version of in the inventive method fuel uninterruptedly being sent in the gas producer continuously is in the upper end of gas producer the roller extrusion machine to be installed; Can make broken coal and straw cylinder particle or coal dust, water and starch or broken coal, brown coal directly be squeezed into the cylinder particulate fuel through the roller extrusion machine and send into gas producer, the density of the cylinder granular fuel that is crushed to can reach 1000kg/m 3About, the combustion gas of generation does not need secondary pressurization directly to be used for the propelling gas turbine engine generating, and this method is one of present gas turbine power generation effective ways that can normally move; In the method for the present invention, the air that in gas furnace, feeds, preferably oxygen; The proportioning of oxygen and steam is 1:0.2-0.6, and during with the air replace oxygen, air and steam proportioning are 1:0.15-0.5; The fuel hardness of using in the said method is high, gas penetration property is good; Stalk that mixes or starch can change and increase the volatilization of various coals, are more conducive to gasification, make that combustion gas output is high, combustion gas quality is high.
Coal straw mixing cylinder granular fuel described in the inventive method; When straw reaping; Can the roller squeezing device be installed in the reaper back, directly will gather in the straw of back chopping and insert in the roller squeezing device, squeeze out straw cylinder particle; This straw cylinder particle is convenient to transportation, is stored; And can increase the hardness and the density of coal straw mixing cylinder granular fuel, and again broken coal and this straw cylinder particle are evenly inserted in the roller extrusion machine through connect two groups or three groups etc. of roller set by weight the mixed of 1:0.15-0.7 and repeatedly roll and be crushed to, promptly become coal straw mixing cylinder granular fuel.The hardness of coal straw mixing cylinder granular fuel is close with coal cinder, and its density is generally 1000kg/m 3About.Coal dust in described coal dust, the starch mixing cylinder granular fuel obtains after adopting broken coal to pulverize; Coal dust, water and starch by weight the mixed of 1:0.05-0.25:0.03-0.05 evenly after, insert in the roller extrusion machine and roll and be crushed to through roller.
Device fabrication of the present invention is with low cost; Rational in infrastructure, can make broken coal, straw, starch directly be squeezed into the cylinder granular fuel after mixing, and continuously get in the gas producer simultaneously; The roller extrusion machine can and the gas producer housing between be tightly connected; Thereby when thoroughly having solved gas producer and need under high pressure move, fuel is conveyed into the difficult problem of furnace pressure sealing, and it has realized that the required fuel of gas producer successively at the uniform velocity drops into; And can keep the constant of temperature and pressure in the producer, make combustion gas as the fuel of generating can be stable the input internal combustion turbine in.Adopt the combustion gas of this device fabrication can remain temperature between 300 ℃-600 ℃.
The brown coal that use in the cylinder granular fuel of the present invention are the coal that a kind of water cut is high, calorific value is low; Because its performance determines that its range of application is narrower; With brown coal as the raw material of fuel of the present invention when reducing cost; Can produce combustion gas equally, but the output of its combustion gas reduces relatively.
It is that raw material is crushed to that cylinder granular fuel of the present invention can also adopt broken coal and water, substitutes above-mentioned described various cylinder granular fuels, and broken coal is ground into coal dust with it in use, and the ratio of coal dust and water is 1:0.05-0.25.The cylinder granular fuel cost that its cost of this alternative materials is processed than coal straw mixing cylinder granular fuel and broken coal, brown coal is higher relatively, and combustion gas output reduces relatively, and this fuel adopts the roller extrusion machine to be crushed to through 2-3 group roller.
Description of drawings
Accompanying drawing 1 is the roller squeezing device structural representation described in the present invention; Accompanying drawing 2 is the gas producer structural representations that use in the inventive method; Accompanying drawing 3 is I portion structure for amplifying synoptic diagram in the accompanying drawing 2; Accompanying drawing 4 is plan structure synoptic diagram of accompanying drawing 3; Accompanying drawing 5 is structural representations of roller extrusion machine.
Embodiment
A kind of method for preparing combustion gas of the present invention comprises the steps:
1. prepare the cylinder granular fuel: get a broken coal and straw cylinder material raw material; Be crushed to coal straw mixing cylinder particle in broken coal and the ratio of the weight ratio 1:0.15-0.7 of a straw cylinder material, or get coal dust, water and starch and after the mixed of 1:0.05-0.25:0.03-0.05, be crushed to coal starch mixing cylinder particle;
2. send into step any fuel described in 1. in the gas producer continuously;
3. bubbling air and steam make the interior temperature of gas producer remain on 400-950 ℃ as vaporized chemical in gas producer.
The air that to gas producer in feed of step of the present invention described in 3. and the proportioning of steam are 1:0.15-0.5.A described coal straw mixing cylinder material raw material is a broken coal and a straw cylinder material; Coal straw mixing cylinder granular fuel is that the ratio in the weight ratio 1:0.15-0.7 of a broken coal and a straw cylinder material is crushed to the preferred scheme 1:0.2-05 of weight ratio of a broken coal and a straw cylinder material in the coal straw mixing cylinder particulate fuel., broken coal less when straw cylinder particle add-on more for a long time, the cost of fuel is higher relatively, still, the gasification result of fuel when burning is relatively low., broken coal add-on more when straw cylinder particle add-on more after a little while, the production cost of fuel is relatively low.The weight ratio of a broken coal and a straw cylinder material can be 1:0.15,1:0.7,1:0.2,1:0.5,1:0.3,1:0.4 etc.Coal dust, starch mixing cylinder granular fuel are to adopt coal dust, water and starch after the mixed of 1:0.05-0.25:0.03-0.05, to be crushed to; For example: coal dust, water and starch are by weight 1:0.05-0.03,1:0.25-0.05,1:0.1-0.04,1:0.2-0.05 etc., and coal dust of the present invention is that broken coal is ground into powdery.The cylinder granular fuel according to the invention mixing cylinder granular fuel that can also to be broken coal and brown coal be crushed to after the mixed of 1:0.2-0.4; Broken coal and brown coal are before inserting the roller extrusion machine; Earlier with its pulverizing; The weight ratio of broken coal and brown coal can be: 1:0.2,1:0.4,1:0.3,1:0.35 etc., above-mentioned arbitrary ratio all can be made into described cylinder granular fuel.The cylinder particle that fuel of the present invention is processed after also can adopting coal dust and water mixes substitutes; That is: broken coal is ground into powdery; In the ratio of the weight ratio 1:0.05-0.25 of coal dust and water, after mixing, insert and be squeezed into the cylinder particle in the roller extrusion machine then; With this alternate cylinder granular fuel, the methane in the combustion gas that employing the inventive method is processed and the content of hydrogen reduce relatively.
The air pressure of setting in the gas producer of the present invention is 10-30kg/cm 2The time, the pressure that the gaseous tension of generation needs greater than internal combustion turbine, combustion gas can directly get into internal combustion turbine, and pressure has also been made more methane generations simultaneously, has improved fuel gases calorific value.Wirking pressure is 12-14kg/cm in the gas producer 2Or 25-30kg/cm 2
The present invention prepares the method that fuel is sent in the gas producer continuously described in 2. of step in the method for combustion gas: the roller extrusion machine is installed on the top at gas producer; The airtight connection between roller extrusion machine and gas producer; Insert after the raw materials mix with fuel in the roller extrusion machine, through output combustion gas in the burner hearth that directly falls into gas producer after the roller extruding.This mode can solve when in stove, inserting fuel continuously, the difficult problem that the stove internal gas pressure that is prone to leaks.
The equipment that uses in the method for combustion gas for preparing of the present invention, gas producer comprises body of heater 11, the roller extrusion machine is installed in body of heater 11 upper ends; The roller extrusion machine has one to receive charging basket 10; Receive charging basket 10 and 11 airtight connections of body of heater, receive to install in the charging basket 10 two rollers 9 are installed on first transmission shaft, 8, the first transmission shafts 8; Two rollers 9 are symmetrically distributed in first transmission shaft, 8 both sides; The receiving on charging basket 10 inwalls of roller 9 belows installed circular steel disk 6, offers through hole 7 on the circular steel disk 6, and the through hole of offering on the steel disk 67 is distributed in roller around track position that first transmission shaft 8 rotates; That is: through hole 7 is in by raw material or/and the sealing of the kinestate of roller all the time, thereby plays the furnace pressure sealing process.Receive charging basket 10 upper ends that opening for feed is set, the lower end is uncovered, the uncovered gas producer that is positioned at, fire grate 18 is installed in body of heater 11 lower ends; Fire grate 18 is connected with second transmission shaft 13, and body of heater 11 bottoms one side is installed in scum pipe 38, the second transmission shafts 13 and offered air inlet port 12; Air inlet port 12 communicates with gas mixing tube 17; Be connected with blast main 16 with vapour pipe 15 respectively on the gas mixing tube 17, on second transmission shaft 13 driving force member be installed, driving force member is connected with motor.
Fire grate of the present invention 18 is connected and composed up and down by multi-layer discs, and disk from top to bottom diameter increases gradually.This fire grate 18 is made into special-purpose member by high temperature resistant stainless steel, and this structure is convenient to deslagging, and is convenient to reduce fuel and piles up, and makes the fuel burning of being more convenient for.
Gas producer according to the invention comprises two-part structure: a part is mounted in the vertical roller extrusion machine of gas producer; It can the raw material of cylinder granular fuel be rolled through roller and extrusion processing becomes the cylinder granular fuel; Directly fall into the stove internal combustion; The cylinder granular fuel is distilled under 400 ℃-900 ℃ the condition of high temperature in stove, and straw that burning-point is low in the fuel or starch volatilization releasing hydrogen gas, methane have increased the calorific value of combustion gas.Another part is by the gas producer body of heater and be installed in drive disk assembly, air inlet mixing head and the deslagging structure that the drive fire grate of bottom of furnace body outside rotates and form.Drive disk assembly has motor, and motor rotates through the wheel box driven gear, and then drives fire grate 18 rotations through second transmission shaft 13, and ashes are entered in the grey slag ladle 29 through scum pipe smoothly.Scum pipe 38 is connected with deslagging jar 29, and screw shaft 45 is installed in the scum pipe 38.Lime-ash was in time discharged when this structure was convenient to the high pressure running, and made the stove fuel keep trouble-free burning, and kept homo(io)thermism.
First transmission shaft 8 on the roller extrusion machine can also pass to two rollers 9 respectively with power through conical gear.Give roller shaft with transmission of power when this drive mechanism can make first transmission shaft 8 rotate, the powerful driving rolls 9 of roller shaft is rotated, thereby keep powerdriven stability and roll the homogeneity with extruding raw material, make fuel further keep higher hardness.Uniform distribution squeezing groove 66 on roller 9 outside surfaces can increase the contact area of extruding raw material, and then increases mixing uniformity.
The conical gear of roller extrusion machine with the structure of transmission shaft is: first transmission shaft 8 is connected with first conical gear 62; Second conical gear 63 and the 4th conical gear 48 mesh with first conical gear 62 respectively; The 3rd conical gear 64 meshes with second conical gear 63 and the 4th conical gear 48 respectively, and the 3rd conical gear 64 is connected with the 3rd transmission shaft 67.
Have dual mode of the present invention the preparation in the fuel entering gas producer that uses in the method for combustion gas: a kind of is directly to send into furnace chamber in through the opening for feed of offering on the gas producer coal straw mixing cylinder granular fuel or coal starch mixing cylinder granular fuel; Another kind of mode is: the roller extrusion machine is installed at the top at gas producer; The airtight connection between roller extrusion machine and gas producer; The discharge port of this extrusion machine is located immediately at the furnace chamber top of gas producer; The fuel that is squeezed out by the roller extrusion machine is in airtight directly continuously falling in the gas producer, and its input speed can be passed through motor revolution, feed quantity regulating as required, and the structure of roller extrusion machine is shown in accompanying drawing 5.The roller extrusion machine comprises and receives charging basket 10, receives that vertical first transmission shaft, 8, the first transmission shafts, 8 upper ends of installing are connected with headstock 2 inner driving mediums in the charging basket 10; First group of rolling wheel 9 is installed on first transmission shaft 8; First group of rolling wheel 9 is two, is installed in transmission shaft 8 both sides respectively, receives to install in the charging basket 10 the first circular steel disk 6; The first circular steel disk 6 is positioned at first group of rolling wheel 9 below; Be uniformly distributed with the first cylindricality through hole 7 on the first circular steel disk 6, receive charging basket 10 upper ends that feed(raw material)inlet 40 is set, receive charging basket 10 lower ends to be provided with fuel outlet 63.
When use the upper end that the roller extrusion machine is directly installed on gas producer; Conical disc 5 is installed in first transmission shaft, 8 lower ends under this state; Be connected with body of heater 11 by charging basket 10 bottoms, conical disc 5 is positioned at body of heater 11, is convenient to the even successive of fuel and falls into the burner hearth internal combustion.Fall into the spontaneous combustion layer that the gas producer fuel forms; Main divide three layers, except that bottom was thick explosion-proof, the protection fire grate lime-ash of 1.2-3 rice, the ash bed upper surface was the thick zone of combustion of 0.9-1.2 rice; The zone of combustion upper surface is a fuel spontaneous combustion layer; This layer becomes carbon monoxide with thousands of degree carbon dioxide reductions that zone of combustion produces, and steam contact elevated temperature heat carbon post-absorption catalytically decomposed produces hydrogen, carbon monoxide, methane, and keeps simultaneously that temperature is 400-900 ℃ in the stove; It above the spontaneous combustion layer the thick preliminary heating zone of 1.2-3 rice; These fuel beds can make and produce more methane and hydrogen in the stove in the combustion gas, can reduce the generation of carbonic acid gas and oxygen more than needed, make combustion gas reach each item index of the present invention.
Gas producer of the present invention has designed timely ash discharge slag structure.Because during gas producer work, common work capacity is generally per hour to consume and is higher than 10 tons of fuel, if lime-ash can not in time be discharged; With the quality and quantity that directly influences production combustion gas in the stove, for this reason, the present invention installs furnace bottom circle 43, furnace hearth plate 21 in gas producer body of heater 11 bottoms; Axle sleeve 14 is installed at furnace hearth plate 21 middle parts; Second transmission shaft, 13, the second transmission shafts 13 are installed in the axle sleeve 14 are scraped ash-pan 44 and divide ash-pan 22 through furnace hearth plate 21 connections, lime scraping knife dish 19 tops are fire grates 18.Power drives second transmission shaft 13 through driving toothed gear 42 and follower gear 41 and rotates, and then drives fire grate 18, lime scraping knife dish 19, scrapes ash-pan 44 and rotate, in rotation process; Lime scraping knife dish 19 is scraped slag in the branch ash-pan 22; Fall on the furnace hearth plate 21 through first small opening 36, simultaneously, scrape ash-pan 44 slag is scraped second small opening 37 into furnace hearth plate 21; Through defeated material mouthful 38 entering screw shaft 45, lime-ash is entered in the grey slag ladle 29 at last.Through water pipe 33 water is squeezed into the back in the ash slag ladle 29 and mix with lime-ash, break into mortar by helical stir wheel 28 then, base plate 27 is installed in grey slag ladle 29 bottoms; The 3rd rotating shaft 24 is installed on the base plate 27; The 3rd rotating shaft 24 is connected with stirring wheel 28, and centrifugal impeller 23 is installed in the 3rd rotating shaft 24, when centrifugal impeller 23 fast rotational; Mortar is pressed into outlet 25, mortar is imported separation cell through feed pipe for mortar 26.The cindery overall system structure stable performance of above-mentioned row, long service life, safe and reliable.
The eccentricity of the medullary ray of gas producer second transmission shaft 13 of the present invention and the centreline space of fire grate 18 is the 100-200 millimeter, can make to mix the lime-ash thick-layers 46 that gas entering fire grate 18 disperses to pass through 1.2-3 rice fast.The gas quantity that gas producer produces depends on: the WP in the stove, the oxygen of feeding still are working parameters such as air.Diameter with gas producer is 3.8 meters, and WP is 12-30 kg/cm in the stove 2Be example, when the oxygen pressure that feeds is 12-15 kg/cm 2, the gas quantity of output is 1200-3000m 3/ m 2H; When the oxygen pressure that feeds is 25-30 kg/cm 2The time, the amount of output combustion gas is 3000-5000 m 3/ m 2H; When the air pressure that feeds is 8-10 kg/cm 2The time, the gas quantity of output is 400-700 m 3/ m 2H.
The present invention prepares the fuel that uses in the method for combustion gas, and during the stage, the straw that burning-point is low in the fuel, starch is volatilization releasing hydrogen gas, methane earlier, to increase the calorific value in the combustion gas, to reach the purpose of propelling gas turbine engine at the spontaneous combustion layer.
Cylinder granular fuel of the present invention; Diameter is generally the 12-20 millimeter; Length is generally the 30-100 millimeter for suitable, and the roller extrusion machine of installing in the gas producer upper end of the present invention is during for fear of steel disk of use; High-pressure gas in the stove dashes certain through hole of wearing on the steel disk and produces gas leakage; Or in order to increase the hardness of fuel, one group, two groups or three groups of rollers, steel disk structure are installed on first transmission shaft 8 again, that is: connect again one group, two groups or three groups and the identical structure of roller steel disk.Roller diameter is generally 400-900mm, power 500-2000KW, 10-30 tons/h of output capacity.
The oxygen depletion power of mixed gas of the present invention is 0.37kwh/m 3, the amount of oxygen of feeding is 1:5 with the ratio of the combustion gas of production, the oxygen power of gas consumption<0.1 kwhm 3
1 is transmission shaft among the figure, the 3rd, and the lower feed box housing, lower feed box housing 3 can be designed to integrative-structure with receiving charging basket 10, also can be designed as the branch body structure, when being designed to the branch body structure, is convenient to install parts such as steel disk 6, cutter 5.The 4th, the blanking cavity, the 20th, alloy is cut grey sulphur slag cutter, the 30th, power shaft, the 31st, bracing frame, the 32nd, stiffening web; The 33rd, high-pressure water pipe, the 34th, bearing, the 35th, water holding jacket, the 39th, bearing, the 49th, roller shaft; The 50th, the conessi of roller shaft one end, roller shaft 49 is connected with roller 9 locking types through conessi 50, and the 51st, bearing, the 52nd, gland, the 53rd, axle sleeve; The 54th, the adjustment pressure nut, the 55th, bottom bracket, the 56th, promote bearing, the 57th, the asbestos packing gland; The 58th, bottom bracket, the 59th, axle sleeve, the 60th, bearing, the 61st, sealing asbestos packing.

Claims (10)

1. a method for preparing combustion gas is characterized in that: comprise the steps:
1. prepare the cylinder granular fuel: get a broken coal and straw cylinder material raw material; Be crushed to coal straw mixing cylinder particle in broken coal and the ratio of the weight ratio 1:0.15-0.7 of a straw cylinder material, or get coal dust, water and starch and after the mixed of 1:0.05-0.25:0.03-0.05, be crushed to coal starch mixing cylinder particle;
2. send into step any fuel described in 1. in the gas producer continuously;
3. bubbling air and steam make the interior temperature of gas producer remain on 400-950 ℃ as vaporized chemical in gas producer.
2. a kind of method for preparing combustion gas according to claim 1 is characterized in that: the said cylinder granular fuel mixing cylinder granular fuel that to be broken coal and brown coal be crushed to after the mixed of 1:0.2-0.4.
3. a kind of method for preparing combustion gas according to claim 1 is characterized in that: the air that to gas producer in feed of step described in 3. and the proportioning of steam are 1:0.15-0.5.
4. a kind of method for preparing combustion gas according to claim 1; It is characterized in that: the method that fuel continuously sent into gas producer in of step described in 2. is: the roller extrusion machine is installed on the top at gas producer; The airtight connection between roller extrusion machine and gas producer; Insert after the raw materials mix with fuel in the roller extrusion machine, through output combustion gas in the burner hearth that directly falls into gas producer after the roller extruding.
5. prepare the equipment that uses in the method for combustion gas according to described any of claim 1-4, it is characterized in that: gas producer comprises body of heater (11), and the roller extrusion machine is installed in body of heater (11) upper end; The roller extrusion machine has one to receive charging basket (10), receives charging basket (10) and airtight connection of body of heater (11), receives to install in the charging basket (10) first transmission shaft (8); First transmission shaft (8) is gone up two rollers (9) is installed, and two rollers (9) are symmetrically distributed in first transmission shaft (8) both sides, and receiving below the roller (9) installed circular steel disk (6) on charging basket (10) inwall; Offer through hole (7) on the circular steel disk (6), receive that charging basket (10) upper end is provided with opening for feed, the lower end is uncovered, the uncovered gas producer that is positioned at; Fire grate (18) is installed in body of heater (11) lower end; Fire grate (18) is connected with second transmission shaft (13), and body of heater (11) bottom one side is installed scum pipe (38), offers air inlet port (12) in second transmission shaft (13); Air inlet port (12) communicates with gas mixing tube (17); Be connected with blast main (16) with vapour pipe (15) respectively on the gas mixing tube (17), second transmission shaft (13) is gone up driving force member is installed, and driving force member is connected with motor.
6. a kind of equipment that uses in the method for combustion gas for preparing according to claim 5, it is characterized in that: first transmission shaft (8) passes to two rollers (9) through conical gear respectively with power, uniform distribution squeezing groove (66) on roller (9) outside surface.
7. a kind of equipment that uses in the method for combustion gas for preparing according to claim 5; It is characterized in that: first transmission shaft (8) is connected with first conical gear (62); Second conical gear (63) and the 4th conical gear (65) mesh with first conical gear (62) respectively; The 3rd conical gear (64) meshes with second conical gear (63) and the 4th conical gear (65) respectively, and the 3rd conical gear (64) is connected with the 3rd transmission shaft (67).
8. a kind of equipment that uses in the method for combustion gas for preparing according to claim 5 is characterized in that: scum pipe (38) is connected with deslagging jar (29), and screw shaft (45) is installed in the scum pipe (38).
9. a kind of equipment that uses in the method for combustion gas for preparing according to claim 5; It is characterized in that: furnace bottom circle (43), furnace hearth plate (21) are installed in gas producer body of heater (1) bottom; Axle sleeve (14) is installed at furnace hearth plate (21) middle part; Second transmission shaft (13) is installed in the axle sleeve (14), and second transmission shaft (13) connects through furnace hearth plate (21) to be scraped ash-pan (44) and divides ash-pan (22), and lime scraping knife dish (19) top is fire grate (18).
10. a kind of method for preparing combustion gas according to claim 1 is characterized in that: the weight ratio 1:0.2-0.5 of a broken coal and a straw cylinder material in the coal straw mixing cylinder particulate fuel.
CN2012100820567A 2012-01-06 2012-03-26 Method and equipment for preparing fuel gas Active CN102634373B (en)

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CN2012201170453U Expired - Fee Related CN202482279U (en) 2012-01-06 2012-03-26 Device for preparing fuel gas for gas turbine-steam turbine combined cycle power generation
CN2012100820552A Expired - Fee Related CN102634374B (en) 2012-01-06 2012-03-26 Equipment for preparing fuel gas for gas turbine-steam turbine combined circulating power generation
CN2012100820567A Active CN102634373B (en) 2012-01-06 2012-03-26 Method and equipment for preparing fuel gas
CN201210082057.1A Active CN102634396B (en) 2012-01-06 2012-03-26 Cylindrical granular fuel, preparation method thereof and equipment used for preparation method
CN2012201170468U Expired - Fee Related CN202478884U (en) 2012-01-06 2012-03-26 Roller extruder for preparing cylindrical granular fuel
CN201210082054.8A Active CN102631865B (en) 2012-01-06 2012-03-26 Rolling wheel extruder for preparing cylindrical particle fuels
CN201210215367.6A Active CN102732319B (en) 2012-01-06 2012-06-27 Method and apparatus for preparing fuel gas by using brown coal
CN201210215366.1A Active CN102732318B (en) 2012-01-06 2012-06-27 Method for preparing fuel gas by using straws, and apparatus thereof
CN2012104976146A Pending CN103013609A (en) 2012-01-06 2012-11-29 Method for preparing fuel gas from pulverized-coal-slurry cylindrical granular fuel manufactured by water-contained crushed coal

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CN2012100820552A Expired - Fee Related CN102634374B (en) 2012-01-06 2012-03-26 Equipment for preparing fuel gas for gas turbine-steam turbine combined circulating power generation

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CN201210082057.1A Active CN102634396B (en) 2012-01-06 2012-03-26 Cylindrical granular fuel, preparation method thereof and equipment used for preparation method
CN2012201170468U Expired - Fee Related CN202478884U (en) 2012-01-06 2012-03-26 Roller extruder for preparing cylindrical granular fuel
CN201210082054.8A Active CN102631865B (en) 2012-01-06 2012-03-26 Rolling wheel extruder for preparing cylindrical particle fuels
CN201210215367.6A Active CN102732319B (en) 2012-01-06 2012-06-27 Method and apparatus for preparing fuel gas by using brown coal
CN201210215366.1A Active CN102732318B (en) 2012-01-06 2012-06-27 Method for preparing fuel gas by using straws, and apparatus thereof
CN2012104976146A Pending CN103013609A (en) 2012-01-06 2012-11-29 Method for preparing fuel gas from pulverized-coal-slurry cylindrical granular fuel manufactured by water-contained crushed coal

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CN102732319A (en) 2012-10-17
WO2013102339A1 (en) 2013-07-11
CN102631865A (en) 2012-08-15
CN102634374B (en) 2013-10-30
CN102634396A (en) 2012-08-15
CN202478884U (en) 2012-10-10
CN102732319B (en) 2014-05-07
CN103013609A (en) 2013-04-03
CN102732318B (en) 2014-05-07
CN102634374A (en) 2012-08-15
CN102634396B (en) 2014-06-18
WO2013102340A1 (en) 2013-07-11
CN102634373B (en) 2013-10-30
CN102631865B (en) 2014-08-13
CN202482279U (en) 2012-10-10

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