CN104560205B - Water-coal slurry and natural gas combined gasifier - Google Patents
Water-coal slurry and natural gas combined gasifier Download PDFInfo
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- CN104560205B CN104560205B CN201310500684.7A CN201310500684A CN104560205B CN 104560205 B CN104560205 B CN 104560205B CN 201310500684 A CN201310500684 A CN 201310500684A CN 104560205 B CN104560205 B CN 104560205B
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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
- C10J1/00—Production of fuel gases by carburetting air or other gases without pyrolysis
- C10J1/20—Carburetting gases other than air
-
- 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
- C10J3/50—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
-
- 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
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Industrial Gases (AREA)
Abstract
The invention relates to a water-coal slurry and natural gas combined gasifier which comprises a furnace chamber, a quenching ring, a guide cylinder, a baffling cylinder, an annular water seal tank, a gasification material inlet, a raw gas outlet and a slag hole, wherein a gasification nozzle matches the gasification material inlet and comprises an ignition rod, an ignition fuel gas central pipe, an inner oxygen annular pipe, a water-coal slurry annular pipe, a natural gas annular pipe, an outer oxygen annular pipe and a cooling annular pipe which are sleeved coaxially from inside to outside. The lower end of the water-coal slurry annular pipe extends downwards to form a water-coal slurry-natural gas mixing chamber, and is connected with the lower end of the natural gas annular pipe; the natural gas annular pipe is communicated with the inner part of the mixing chamber through a natural gas nozzle; a mixture nozzle is formed in the lower part of the water-coal slurry-natural gas mixing chamber; the axles of a plurality of the natural gas nozzles are not in the radial direction of a circle formed on a side wall of the water-coal slurry-natural gas mixing chamber. The gasifier is suitable for the combined gasification of the water-coal slurry and natural gas, improves the efficiency of cold coal gas and the ratio of hydrogen to carbon monoxide in the product, and reduces the emission of carbon dioxide in the preparation process of synthesis gas.
Description
Technical field
The present invention relates to a kind of water-coal-slurry and natural gas to be combined the gasification furnace for being gasified, belong to equipment for gasification technology neck
Domain.
Background technology
Water-coal-slurry is the fluid fuel obtained with the mixed merga pass Physical Processing of certain proportion by coal, water and additive, by
Be distributed in the north and west area mostly in coal resources in China, transport the coal in the North to the South for a long time, Xi Meidong adjust general layout increased transport
And operation costs, and water-coal-slurry is capable of achieving total enclosing long distance delivery, can reduce transport and the operation costs of coal, therefore water
The industry application of coal slurry technology is received significant attention.
Coal gasification is a kind of mode of coal processing in existing coal chemical technology, and it is oxygen, vapor etc. with coal as raw material
The combustible constituent in coal is converted at high temperature the mistake of gaseous fuel or synthesis gas by chemical reaction as gasifying agent for gas
Journey, the direct product of coal gasification mainly has carbon monoxide, carbon dioxide, hydrogen and a small amount of methane, hydrogen sulfide etc..Water-coal-slurry gas
Change technology is a kind of more water-coal-slurry processing and utilization method of Recent study, and what China realized earliest industrial applications is
Texaco coal slurry gasifiers, its gasification is：Water-coal-slurry is crushed by nozzle in the presence of high speed oxygen, atomization is sprayed into
Gasification furnace, oxygen and water-coal-slurry are subject to high temperature action, the preheating of rapid experience, moisture evaporation, the dry distillation of coal, volatile matter cracking in stove
Burning and physics, the chemical reaction of the series of complex such as carbon gasification, ultimately produce with carbon monoxide, hydrogen, carbon dioxide and
Vapor is wet gas, slag and the unreacted carbon of main component；These products flow out downwardly together reaction zone, enter
Enter the shock chamber of furnace bottom of gasifying, slag and carbon are trapped within water Jing after quenching, solidification, finally fall into slag ladle, Jing deslagginves system
System regular discharge, wet gas then obtain the coal gas of cleaning after into the process of coal gas cooling and purifying system.
Existing Texaco gasification furnaces need that first pre- hot nozzle is installed on gasification furnace before check, light pre- thermal jet
Mouth is completed after baker, then is quickly unloaded and installed feed nozzle rapidly and carry out follow-up water-coal-slurry feed pre- hot nozzle and gasified
Journey；But, above-mentioned technique is susceptible to combustion gas in the pre- hot nozzle of removal and during installing feed nozzle, the leakage of oxygen is asked
Topic, and pre- hot nozzle and feed nozzle volume is big, temperature is high, easily personal injury is caused to operator.In order to solve
The problems referred to above, Chinese patent literature CN202509052U discloses a kind of for water-coal-slurry or the combining nozzle of pulverized coal gasification furnace,
Including middle oxygen passage, lead to gasification furnace chamber；Feed intake passage, leads to gasification furnace chamber and prolongs in the periphery of middle oxygen passage
Stretch；Annular space oxygen passage, leads to gasification furnace chamber and extends in the periphery of the passage that feeds intake, wherein feed intake passage and annular space oxygen passage
Between be provided with the first cooling water jecket, annular space oxygen passage periphery is provided with the second cooling water jecket；And ignitor and ignition power
The protection sleeve pipe of pole, the outside of the passage that is arranged at feeding intake.The combining nozzle can avoid high speed water-coal-slurry or coal dust to igniting
Washing away for electrode, also improves the uniformity that water-coal-slurry or coal dust spray in the passage that feeds intake, and reduces the inclined spray phenomenon of nozzle.
Gasification furnace with above-mentioned combining nozzle is capable of achieving the continuous ignition of water-coal-slurry and gasification, without the need for changing nozzle, greatly
Safety and the economy of gasification furnace production run are improve greatly.But, the cold gas efficiency of above-mentioned coal water slurry gasification is low, and
Using above-mentioned coal water slurry gasification product as raw material prepare the products such as follow-up methanol or artificial oil when, due in coal water slurry gasification product
The ratio of hydrogen and carbon monoxide is too low, need increase conversion process by part carbon monodixe conversion be hydrogen with improve hydrogen with
The ratio of carbon monoxide, so not only increases the complexity of technique, and conversion process produces substantial amounts of CO2, through coal gas
The a large amount of CO discharged after desulfurization decarbonization purification2Greenhouse gases also pollute environment.
Applicant is attempted by the species of adjustment coal water slurry gasification raw material come hydrogen in improving cold gas efficiency and gasification product
The ratio of gas and carbon monoxide, but the species of gasified raw material cannot be adjusted using the gasification furnace of said structure.
The content of the invention
It is low that the technical problem to be solved is that the gasification furnace of prior art has a coal water slurry gasification cold gas efficiency,
The ratio of hydrogen and carbon monoxide is low in product, and needing could be as after after the transformed ratio for processing raising hydrogen and carbon monoxide
The synthetic raw gas of continuous product are used, and conversion process not only increases process complexity, and produce a large amount of CO2Greenhouse gas
Body, although applicant attempts to overcome disadvantages mentioned above by adjusting the species of coal water slurry gasification raw material, but existing gasification furnace is tied
Structure can not meet above-mentioned requirements；And then a kind of adjustable gasified raw material species is proposed, so as to improve coal water slurry gasification cooled coal gas
The water-coal-slurry and natural gas combined vaporizing stove of efficiency and hydrogen and carbon monoxide ratio.
To solve above-mentioned technical problem, the invention provides a kind of water-coal-slurry and natural gas combined vaporizing stove, including furnace shell；
Flue, chilling ring and guide shell, are sequentially connected are arranged in the furnace shell from top to bottom；
Baffling cylinder, is partly set in the outside of the guide shell, positioned at the lower section of the chilling ring；
Annular seal-water tank, is arranged between the furnace shell and guide shell；
Gasified raw material import, is arranged at the top of the furnace shell, is connected with inside the flue；
Raw gas is exported, and is arranged on the furnace shell side wall below the water sealed tank；
Slag notch, is arranged at the bottom of the furnace shell；
Gasification nozzle, is adapted with the gasified raw material import, for introducing gasified raw material into gasification furnace；
The gasification nozzle includes fire rod, igniter fuel gas central canal, the interior oxygen ring being sequentially coaxially arranged from the inside to the outside
Pipe, water-coal-slurry endless tube, natural gas endless tube, outer oxygen endless tube and cooling ring vessel；The igniter fuel gas central canal top is provided with combustion
Material gas import, bottom are provided with fuel gas spout；The interior oxygen endless tube top is provided with interior oxygen import, bottom and is provided with interior oxygen spray
Mouthful；The water-coal-slurry endless tube top is provided with water-coal-slurry import, and the natural gas endless tube top is provided with Imported gas；It is described
Outer oxygen endless tube top is provided with outer oxygen import, bottom and is provided with outer oxygen spout；Cooling medium is provided with the cooling ring vessel to enter
Mouth and cooling medium outlet；
Also include water-coal-slurry-natural gas hybrid chamber, in the outer oxygen endless tube, by the lower end of the water-coal-slurry endless tube
It is downwardly extending, the water-coal-slurry-natural gas hybrid chamber bottom is provided with mixture spout；Under the natural gas endless tube
End is connected with the outer wall of the water-coal-slurry-natural gas hybrid chamber, is provided with the water-coal-slurry-natural gas hybrid chamber natural
Gas blowout mouth, the natural gas endless tube is connected by the natural gas spout with inside the water-coal-slurry-natural gas hybrid chamber.
The water-coal-slurry-natural gas hybrid chamber is located in the natural gas endless tube, the lower end of the natural gas endless tube and institute
The outer wall for stating water-coal-slurry-natural gas hybrid chamber bottom is connected；The mixture notch setting is in the water-coal-slurry-natural gas
The bottom of hybrid chamber.
The water-coal-slurry-natural gas hybrid chamber is made up of the necking at two and the tubular structure at middle part, the contracting on top
Mouth is gradually wealthy from top to bottom, and the necking of bottom is tapered from top to bottom；The top of the water-coal-slurry-natural gas hybrid chamber is with
Portion is respectively arranged with multiple natural gas spouts, water-coal-slurry-natural gas hybrid chamber side described in multiple gas spraying opening's edges
Even circumferential formed by wall is arranged, and the axle of multiple natural gas spouts is not in the water-coal-slurry-natural gas hybrid chamber side wall institute
Into circumference radially.
Multiple natural gas spouts are inclined in the counterclockwise direction along clockwise direction or, and multiple described natural
The axle of gas blowout mouth and the water-coal-slurry-natural gas hybrid chamber side wall into the radial direction of circumference into 5-85 ° of angle.
The water-coal-slurry import is arranged on the upper end of the water-coal-slurry endless tube, and the Imported gas are arranged on described natural
The upper end of compression ring pipe；The fuel gas inlet is arranged on the upper end of the igniter fuel gas central canal, and the fuel gas spout sets
Put in the bottom of the igniter fuel gas central canal；The interior oxygen import is arranged on the upper end of the interior oxygen endless tube, the interior oxygen
Notch setting is in the bottom of the interior oxygen endless tube；The outer oxygen import is arranged on the upper end of the outer oxygen endless tube, the outer oxygen spray
Mouth is arranged on the bottom of the outer oxygen endless tube；The cooling medium inlet and cooling medium outlet are arranged on the cooling ring vessel
Upper end, and the cooling medium inlet and cooling medium outlet are distributed in the both sides of gasification nozzle central shaft.
The fuel gas spout and interior oxygen spout are higher than the mixture spout.
The flue, chilling ring, annular seal-water tank, guide shell and baffling cylinder are coaxially disposed with the furnace shell, the flue,
Chilling ring and guide shell integrated molding.
The upper and lower end socket of the flue is coiled cold wall structure, the side wall of the flue be coiled cold wall structure or
Tube type cold wall construction, passes through welded seal between the coil pipe or tubulation.
The side towards the fire of the flue is laid with insulating refractory layer.
The flue is supported in the furnace shell by multiple locating supports positioning, and the locating support is located at the flue
Top and middle part, and along the flue even circumferential be distributed；Heat-insulating room, the stove are formed between the furnace shell and flue
The air inlet communicated with the heat-insulating room is set on shell.
The present invention has the advantages that compared with prior art：
（1）Water-coal-slurry of the present invention and natural gas combined vaporizing stove, its gasification nozzle is included from the inside to the outside sequentially coaxially
Fire rod, igniter fuel gas central canal, interior oxygen endless tube, water-coal-slurry endless tube, natural gas endless tube, outer oxygen endless tube and the cooling ring being arranged
Pipe；It is arranged in the outer oxygen endless tube, the water-coal-slurry-natural gas being downwardly extending by the lower end of the water-coal-slurry endless tube is mixed
Chamber is closed, bottom is provided with mixture spout, and the natural gas endless tube is mixed by the natural gas spout and water-coal-slurry-natural gas
Close intracavity portion to be connected.The ratio of hydrogen and carbon monoxide is 1 in existing coal water slurry gasification product:1.5-2, and Modern New
Synthesizing methanol, artificial oil etc. need the ratio of hydrogen and carbon monoxide in raw material to be about 2 in Coal Chemical Industry:1, it is therefore desirable to by becoming
Change the ratio of hydrogen and carbon monoxide in technique adjustment raw material.The application applicant has found Jing after research, by the gas of the present invention
After change stove uniformly mixes natural gas in water-coal-slurry-natural gas hybrid chamber with water-coal-slurry, the oxygen effect in outer oxygen endless tube
Under, mixture is gasified.Due to still remaining substantial amounts of vapor after the coal water slurry gasification in mixture, in the effect of mixing
Under, natural gas can generate enough hydrogen with the remaining vapor reaction of coal water slurry gasification, thus improve in gasification product
Hydrogen content, so as to improve the ratio of hydrogen and carbon monoxide, produced gasification product can without the need for conversion directly as methanol,
The raw material of the products such as artificial oil, and, natural gas substantially increases the cold gas efficiency of gasification with water-coal-slurry combined vaporizing, it is to avoid
Coal water slurry gasification cold gas efficiency is low in prior art, and in product the ratio of carbon monoxide and hydrogen is too high, needs by becoming
Changing technique reduces its ratio, and conversion process had both improve process complexity, also result in a large amount of CO2The discharge of gas, although Shen
Ask someone to attempt to overcome disadvantages mentioned above by adjusting gasified raw material species, but existing gasification furnace structure cannot meet its requirement
Problem.
Further, by the fire rod being located in igniter fuel gas central canal can realize water-coal-slurry light a fire and gasify it is continuous
Carry out, without the need for changing nozzle, improve the safety of production efficiency and equipment.
（2）Water-coal-slurry of the present invention and natural gas combined vaporizing stove, the water-coal-slurry-natural gas mixing of its gasification nozzle
Chamber is made up of the necking at two and the tubular structure at middle part, and the necking on top is gradually wealthy from top to bottom, the necking of bottom
It is tapered from top to bottom.Water-coal-slurry and natural gas enter flowing velocity drop after water-coal-slurry-natural gas mixing intracavity by the necking on top
Low, water-coal-slurry and natural gas are sufficiently mixed, and the then blended bottom of chamber portion necking of mixture is sprayed at a high speed by mixture spout
Go out, be atomized, and clashed into again and be atomized with high speed oxygen, with oxygen high-temperature gasification, the water coal of this structure are carried out
Slurry-natural gas hybrid chamber improves mixing, the atomizing effect of water-coal-slurry and natural gas, improves the cold gas efficiency of gasification, day
So gas can more fully gasify to provide enough hydrogen, further increase the ratio of hydrogen and carbon monoxide in product, institute
Generating product can be directly used as the raw material of follow-up chemical industry synthesis.
（3）Water-coal-slurry of the present invention and natural gas combined vaporizing stove, the axle of multiple natural gas spouts of its gasification nozzle
Not the water-coal-slurry-natural gas hybrid chamber side wall into circumference radially.Due to fire rod, igniter fuel gas central canal
Arrange along the axle of water-coal-slurry-natural gas hybrid chamber with interior oxygen endless tube, make the axle of natural gas spout not in hybrid chamber side wall circumference
Radially, it is possible to reduce at a high speed the natural gas of injection washes away to fire rod, igniter fuel gas central canal and interior oxygen endless tube.It is excellent
Multiple natural gas spouts are selected to incline in the counterclockwise direction along clockwise direction or, and multiple natural gas spouts
Axle and the water-coal-slurry-natural gas hybrid chamber side wall into the radial direction of circumference into 5-85 ° of angle.Height can almost be avoided
The natural gas of speed injection washes away to fire rod, igniter fuel gas central canal and interior oxygen endless tube, so as to extend making for gasification nozzle
Use the life-span；And, in the gasification nozzle for so arranging, natural gas will not slow down after spraying because washing away interior oxygen endless tube tube wall, because
And eddy flow can be formed in water-coal-slurry-natural gas mixing intracavity, improve the mixed effect of natural gas and water-coal-slurry.
Description of the drawings
In order that present disclosure is more easily understood, the present invention is with reference to the drawings and specific embodiments to the present invention's
Content is further detailed；
Fig. 1 is the structural representation of water-coal-slurry of the present invention and natural gas combined vaporizing stove；
Fig. 2 is the structural representation of gasification nozzle in water-coal-slurry of the present invention and natural gas combined vaporizing stove；
Fig. 3 is sectional view of the gasification nozzle in water-coal-slurry of the present invention and natural gas combined vaporizing stove along A-A；
Wherein reference is：1- fire rodes, 2- igniter fuel gas central canals, oxygen endless tube in 3-, 4- water-coal-slurry endless tubes, 5-
Natural gas endless tube, the outer oxygen endless tubes of 6-, 7- cooling ring vessels, 8- fuel gas inlets, 9- fuel gas spouts, oxygen import in 10-, in 11-
Oxygen spout, 12- water-coal-slurry imports, 13- Imported gas, the outer oxygen imports of 14-, the outer oxygen spouts of 15-, 16- cooling medium inlets,
17- cooling mediums are exported, 18- water-coal-slurry spouts, 19- natural gas spouts, 20- mixture spouts, and 21- water-coal-slurry-natural gas is mixed
Close chamber, 22- furnace shells, 23- flues, 24- chilling rings, 25- guide shells, 26- baffling cylinders, 27- annular seal-water tanks, 28- gasified raw materials
Import, the outlet of 29- raw gas, 30- slag notches, 31- gasification nozzles, 32- locating supports, 33- air inlets.
Specific embodiment
Embodiment 1
The gasification furnace that water-coal-slurry of the present invention and natural gas are used in combination, including furnace shell 22, it is in the present embodiment, described
Furnace shell 22 is cylinder；Flue 23, chilling ring 24 and guide shell 25, are sequentially connected are arranged in the furnace shell 22 from top to bottom,
In the present embodiment, the flue 23, chilling ring 24, annular seal-water tank 27, guide shell 25 and baffling cylinder 26 and the furnace shell 22
It is coaxially disposed, the flue 23 is cylinder, the flue 23, chilling ring 24 and the integrated molding structure of guide shell 25, institute
The upper and lower end socket for stating flue 23 is coiled cold wall structure, and the side wall of the flue 23 is coiled cold wall structure or shell and tube
Cold wall structure, passes through welded seal between the coil pipe or tubulation；Baffling cylinder 26, is partly set in the outside of the guide shell 25,
Positioned at the lower section of the chilling ring 24；Annular seal-water tank 27, is arranged between the furnace shell 22 and guide shell 25, in the present embodiment
In, the water seal slot part is located between the furnace shell 22 and guide shell 25, and remainder is located at the furnace shell 22 and baffling cylinder
Between 26；Gasified raw material import 28, is arranged at the top of the furnace shell 22, is connected with inside the flue 23；Raw gas goes out
Mouth 29, is arranged on the side wall of furnace shell 22 below the water sealed tank；Slag notch 30, is arranged at the bottom of the furnace shell 22；Gasification
Nozzle 31, is adapted with the gasified raw material import 28, for introducing gasified raw material into gasification furnace；
The gasification nozzle 31 includes fire rod 1, the igniter fuel gas central canal being sequentially coaxially arranged from the inside to the outside
2nd, interior oxygen endless tube 3, water-coal-slurry endless tube 4, natural gas endless tube 5, outer oxygen endless tube 6 and cooling ring vessel 7；The igniter fuel gas central canal
2 tops are provided with fuel gas inlet 8, bottom and are provided with fuel gas spout 9, and in the present embodiment, the fuel gas inlet 8 is arranged
In the upper end of the igniter fuel gas central canal 2, the fuel gas spout 9 is arranged on the bottom of the igniter fuel gas central canal 2
End；The interior top of oxygen endless tube 3 is provided with interior oxygen import 10, bottom and is provided with interior oxygen spout 11, in the present embodiment, described interior
Oxygen import 10 is arranged on the upper end of the interior oxygen endless tube 3, and the interior oxygen spout 11 is arranged on the bottom of the interior oxygen endless tube 3；Institute
State the top of water-coal-slurry endless tube 4 and be provided with water-coal-slurry import 12, the top of natural gas endless tube 5 is provided with Imported gas 13,
In the present embodiment, the water-coal-slurry import 12 is arranged on the upper end of the water-coal-slurry endless tube 4, and the Imported gas 13 are arranged on
The upper end of the natural gas endless tube 5；The outer top of oxygen endless tube 6 is provided with outer oxygen import 14, bottom and is provided with outer oxygen spout 15,
In the present embodiment, the outer oxygen import 14 is arranged on the upper end of the outer oxygen endless tube 6, and the outer oxygen spout 15 is arranged on described
The bottom of outer oxygen endless tube 6；Cooling medium inlet 16 and cooling medium outlet 17 are provided with the cooling ring vessel 7, in this enforcement
In example, the cooling medium inlet 16 and cooling medium export 17 upper ends for being arranged on the cooling ring vessel 7, and the cooling
Medium entrance 16 and cooling medium outlet 17 are distributed in the both sides of the central shaft of gasification nozzle 31；
Water-coal-slurry-natural gas hybrid chamber 21, in the outer oxygen endless tube 6, from the water-coal-slurry endless tube 4 lower end to
Lower extension is formed, and the water-coal-slurry-bottom of natural gas hybrid chamber 21 is provided with mixture spout 20；The natural gas endless tube 5
Lower end is connected with the outer wall of the water-coal-slurry-natural gas hybrid chamber 21, arranges on the water-coal-slurry-natural gas hybrid chamber 21
There is natural gas spout 19, the natural gas endless tube 5 is by the natural gas spout 19 and the water-coal-slurry-natural gas hybrid chamber
It is connected inside 21, the water-coal-slurry endless tube 4 is by inside water-coal-slurry spout 18 and the water-coal-slurry-natural gas hybrid chamber 21
It is connected；In the present embodiment, the lower end of the water-coal-slurry endless tube 4 is downwardly extending in the natural gas endless tube 5
The water-coal-slurry-natural gas hybrid chamber 21, and the lower end of the natural gas endless tube 5 mixes with the water-coal-slurry-natural gas
The outer wall of the bottom of chamber 21 is connected, and the mixture spout 20 is arranged on the bottom of the water-coal-slurry-natural gas hybrid chamber 21,
The water-coal-slurry-natural gas hybrid chamber 21 is made up of the necking at two and the tubular structure at middle part, and the necking on top is by upper
Gradually wealthy under, the necking of bottom is tapered from top to bottom, the water-coal-slurry endless tube 4 and water-coal-slurry-natural gas hybrid chamber 21
The connection place of communicating is water-coal-slurry spout 18, and the top and middle part of the water-coal-slurry-natural gas hybrid chamber 21 are respectively arranged with multiple
The natural gas spout 19, multiple natural gas spouts 19 are along circle formed by the side wall of the water-coal-slurry-natural gas hybrid chamber 21
Week is uniformly arranged, and the axle of multiple natural gas spouts 19 is not in the side wall institute of the water-coal-slurry-natural gas hybrid chamber 21 into circumference
Radially.
The use process of above-mentioned gasification furnace, is first installed on gasification nozzle 31 on the gasification furnace, to gasification nozzle 31
Igniter fuel gas central canal 2 is passed through fuel gas, and interior oxygen endless tube 3 is passed through in proportion oxygen and mixes at interior oxygen spout 11 with fuel gas
Close, lighted by fire rod 1, while other passages are passed through a small amount of nitrogen as shielding gas；After flameholding, nitrogen filled protection is cut off
Gas, feedwater coal slurry endless tube 4 and natural gas endless tube 5 each lead in water-coal-slurry and natural gas, outer oxygen endless tube 6 and are passed through oxygen, natural
After gas mixes with water-coal-slurry in water-coal-slurry-natural gas hybrid chamber 21, blended thing spout 20 at a high speed sprays mixture, high
Water-coal-slurry-natural gas mixture that speed sprays is ignited under the oxygen air curtain effect of outer oxygen endless tube 6, into the flue of gasification furnace
Gasified in 23, because natural gas and the remaining vapor reaction of coal water slurry gasification can provide enough hydrogen, therefore improved
The ratio of hydrogen and carbon monoxide in gasification product, while the cold gas efficiency of coal gasification is improved, the consumption of gasifying agent oxygen
Substantially reduce；Product after gasification is sequentially entered and cooled down in chilling ring 24, guide shell 25 and baffling cylinder 26, the rough coal of generation
Gas Jing raw gas outlet 29 is collected, and condensed residue Jing slag notches 30 are discharged.
Embodiment 2
On the basis of above-described embodiment, in order to reduce in gasification nozzle 31 high speed natural gas to oxygen ring in gasification nozzle 31
Pipe 3 washes away, and as Figure 1-3, preferably multiple natural gas spouts 19 are along clockwise direction or in the counterclockwise direction
Incline, in the present embodiment, multiple natural gas spouts 19 are inclined in the counterclockwise direction；Multiple natural gas spouts 19
Axle and the side wall of the water-coal-slurry-natural gas hybrid chamber 21 into the radial direction of circumference into 5-85 ° of angle, so as in water coal
Slurry-natural gas hybrid chamber 21 forms eddy flow, improves the mixed effect of water-coal-slurry and natural gas, and then improves the place of water-coal-slurry
Reason efficiency.In order to the mixture that in time point combusting coal water slurry is formed with natural gas, the fuel gas spout 9 and interior oxygen spout
11 is higher than the mixture spout 20；
The side towards the fire of the flue 23 is laid with insulating refractory layer.The flue 23 is by the positioning of multiple locating supports 32
In the furnace shell 22, the locating support 32 is located at the top and middle part of the flue 23 for support, and along the flue 23
Even circumferential is distributed, and the locating support 32 on top is used to support the flue 23, the locating support 32 at middle part to be used to position flue
23 position；Heat-insulating room is formed between the furnace shell 22 and flue 23, arranges what is communicated with the heat-insulating room on the furnace shell 22
Air inlet 33.
Comparative example
So that the gasification nozzle 31 in embodiment 2 to be replaced with the coal water slurry gasification in Chinese patent literature CN202509052U
Compound burner.
Test case
Respectively water-coal-slurry is gasified with the gasification furnace in embodiment 1, embodiment 2 and comparative example, gasification result sees below
Table.
1- embodiments 1,2 are identical with the jet coal that comparative example is used；
2-CO2Discharge only refers to the transformed technique productions synthesis gas of coal gas that coal gasification is produced（Synthesizing methanol and artificial oil
Raw material）During discharge capacity.
By the test data of upper table, natural gas is combined by gas with water-coal-slurry using gasification nozzle of the present invention 31
After change, the ratio of hydrogen and carbon monoxide is greatly improved, is reduced than oxygen consumption, the follow-up artificial oil of reduction and methanol synthetizing technology
CO2Discharge capacity；In comparative example and embodiment 1, H2/ CO ratios bring up to 1.44 by the 0.76 of comparative example, consume by comparative example than oxygen
377Nm3/1000Nm3(CO+H2) it is reduced to 291Nm3/1000Nm3(CO+H2), the coal gas of embodiment 1 is used to be compared during artificial oil
Comparative example product per ton can reduce CO22.86 tons of discharge, the coal gas of embodiment 1 is used for synthesizing methanol phase product more per ton than comparative example
Product can reduce CO21.25 tons of discharge.
Embodiment 2 understands, as the weight of natural gas and coal is than increasing, H in product2The ratio of/CO increases, gasifies than oxygen consumption
Reduce, cold gas efficiency is improved, the transformed technique productions synthesis gas of gasification gas（The raw material of synthesizing methanol and artificial oil）Process
Middle CO2Discharge capacity reduce.
Although the present invention has carried out detailed elaboration by above-mentioned specific embodiment to it, this specialty is common
Technical staff should be understood that any form without departing from claims and the change of details made on this basis
Change, belong to invention which is intended to be protected.
Claims (10)
1. a kind of water-coal-slurry and natural gas combined vaporizing stove, including
Furnace shell (22)；
Flue (23), chilling ring (24) and guide shell (25), are sequentially connected are arranged in the furnace shell (22) from top to bottom；
Baffling cylinder (26), is partly set in the outside of the guide shell (25), positioned at the lower section of the chilling ring (24)；
Annular seal-water tank (27), is arranged between the furnace shell (22) and guide shell (25)；
Gasified raw material import (28), is arranged at the top of the furnace shell (22), is connected with inside the flue (23)；
Raw gas exports (29), is arranged on the wall of the furnace shell below the water sealed tank (22) side；
Slag notch (30), is arranged at the bottom of the furnace shell (22)；
Gasification nozzle (31), is adapted with the gasified raw material import (28), for introducing gasified raw material into gasification furnace；
Characterized in that,
The gasification nozzle (31) including the fire rod (1), igniter fuel gas central canal (2) being sequentially coaxially arranged from the inside to the outside,
Interior oxygen endless tube (3), water-coal-slurry endless tube (4), natural gas endless tube (5), outer oxygen endless tube (6) and cooling ring vessel (7)；The igniter fuel
Gas central canal (2) top is provided with fuel gas inlet (8), bottom and is provided with fuel gas spout (9)；On the interior oxygen endless tube (3)
Portion is provided with interior oxygen import (10), bottom and is provided with interior oxygen spout (11)；Water-coal-slurry endless tube (4) top is provided with water-coal-slurry
Import (12), natural gas endless tube (5) top is provided with Imported gas (13)；Outer oxygen endless tube (6) top is provided with
Outer oxygen import (14), bottom are provided with outer oxygen spout (15)；Be provided with the cooling ring vessel (7) cooling medium inlet (16) and
Cooling medium exports (17)；
Also include water-coal-slurry-natural gas hybrid chamber (21), in the outer oxygen endless tube (6), by the water-coal-slurry endless tube (4)
Lower end be downwardly extending, the water-coal-slurry-natural gas hybrid chamber (21) bottom is provided with mixture spout (20)；It is described
The lower end of natural gas endless tube (5) is connected with the outer wall of the water-coal-slurry-natural gas hybrid chamber (21), the water-coal-slurry-day
So natural gas spout (19) is provided with gas hybrid chamber (21), the natural gas endless tube (5) is by the natural gas spout (19)
It is internal with the water-coal-slurry-natural gas hybrid chamber (21) to be connected.
2. gasification furnace according to claim 1, it is characterised in that the water-coal-slurry-natural gas hybrid chamber (21) is positioned at institute
State in natural gas endless tube (5), lower end and the water-coal-slurry-natural gas hybrid chamber (21) bottom of the natural gas endless tube (5)
Outer wall is connected；The mixture spout (20) is arranged on the bottom of the water-coal-slurry-natural gas hybrid chamber (21).
3. gasification furnace according to claim 1 and 2, it is characterised in that the water-coal-slurry-natural gas hybrid chamber (21) by
The necking at two and the tubular structure composition at middle part, the necking on top is gradually wealthy from top to bottom, and the necking of bottom is by upper
It is tapered under；The top and middle part of the water-coal-slurry-natural gas hybrid chamber (21) is respectively arranged with multiple natural gas spouts
(19), multiple natural gas spouts (19) set along the water-coal-slurry-even circumferential formed by the wall of natural gas hybrid chamber (21) side
Put, the axle of multiple natural gas spouts (19) not the water-coal-slurry-natural gas hybrid chamber (21) side wall into circumference footpath
Upwards.
4. gasification furnace according to claim 3, it is characterised in that multiple natural gas spouts (19) are along side clockwise
To or incline in the counterclockwise direction, and the axle of multiple natural gas spouts (19) mixes with the water-coal-slurry-natural gas
Chamber (21) side wall into the radial direction of circumference into 5-85 ° of angle.
5. gasification furnace according to claim 1, it is characterised in that the water-coal-slurry import (12) is arranged on the water-coal-slurry
The upper end of endless tube (4), the Imported gas (13) are arranged on the upper end of the natural gas endless tube (5)；The fuel gas inlet
(8) upper end of the igniter fuel gas central canal (2) is arranged on, the fuel gas spout (9) is arranged on the igniter fuel gas
The bottom of central canal (2)；The interior oxygen import (10) is arranged on the upper end of the interior oxygen endless tube (3), the interior oxygen spout (11)
It is arranged on the bottom of the interior oxygen endless tube (3)；The outer oxygen import (14) is arranged on the upper end of the outer oxygen endless tube (6), described
Outer oxygen spout (15) is arranged on the bottom of the outer oxygen endless tube (6)；The cooling medium inlet (16) and cooling medium are exported
(17) upper end of the cooling ring vessel (7), and the cooling medium inlet (16) and cooling medium outlet (17) point are arranged on
Cloth is in the both sides of gasification nozzle (31) central shaft.
6. the gasification furnace according to claim 1,2,4 or 5, it is characterised in that the fuel gas spout (9) and interior oxygen spout
(11) higher than the mixture spout (20).
7. the gasification furnace according to claim 1,2,4 or 5, it is characterised in that the flue (23), chilling ring (24), ring
Shape water sealed tank (27), guide shell (25) and baffling cylinder (26) are coaxially disposed with the furnace shell (22), the flue (23), chilling ring
And guide shell (25) integrated molding (24).
8. the gasification furnace according to claim 1,2,4 or 5, it is characterised in that the upper and lower end socket of the flue (23) is disk
Tube type cold wall construction, the side wall of the flue (23) is coiled cold wall structure or tube type cold wall construction, the coil pipe or row
Pass through welded seal between pipe.
9. gasification furnace according to claim 8, it is characterised in that the side towards the fire of the flue (23) is laid with insulating refractory
Layer.
10. gasification furnace according to claim 8, it is characterised in that the flue (23) is by multiple locating supports (32)
Positioning is supported in the furnace shell (22), and the locating support (32) is located at the top and middle part of the flue (23), and edge
The even circumferential distribution of the flue (23)；Heat-insulating room, the furnace shell (22) are formed between the furnace shell (22) and flue (23)
It is upper that the air inlet (33) communicated with the heat-insulating room is set.
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| CN201310500684.7A CN104560205B (en) | 2013-10-22 | 2013-10-22 | Water-coal slurry and natural gas combined gasifier |
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| CN201310500684.7A CN104560205B (en) | 2013-10-22 | 2013-10-22 | Water-coal slurry and natural gas combined gasifier |
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| CN109486533B (en) * | 2018-11-30 | 2020-09-04 | 西北化工研究院有限公司 | Method for preparing synthesis gas by reacting carbon chemical fuel in multi-element conjugate mode |
| CN112781056A (en) * | 2019-11-06 | 2021-05-11 | 中国石油化工股份有限公司 | Incineration device and method for treating solid hazardous waste |
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