CN113999700A - Five-channel process burner - Google Patents
Five-channel process burner Download PDFInfo
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- CN113999700A CN113999700A CN202111067508.XA CN202111067508A CN113999700A CN 113999700 A CN113999700 A CN 113999700A CN 202111067508 A CN202111067508 A CN 202111067508A CN 113999700 A CN113999700 A CN 113999700A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008569 process Effects 0.000 title claims abstract description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 190
- 239000001301 oxygen Substances 0.000 claims abstract description 190
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 190
- 239000003245 coal Substances 0.000 claims abstract description 114
- 239000002002 slurry Substances 0.000 claims abstract description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 101
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 239000003250 coal slurry Substances 0.000 claims abstract description 29
- 239000000498 cooling water Substances 0.000 claims description 90
- 239000007789 gas Substances 0.000 claims description 28
- 239000004593 Epoxy Substances 0.000 claims description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 11
- 239000003345 natural gas Substances 0.000 claims description 8
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- 239000002283 diesel fuel Substances 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 6
- -1 steam Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 16
- 238000000889 atomisation Methods 0.000 abstract description 15
- 230000002035 prolonged effect Effects 0.000 abstract description 9
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- 239000003034 coal gas Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 239000002956 ash Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
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- 239000011335 coal coke Substances 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
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- 239000003054 catalyst Substances 0.000 description 2
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- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
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- 239000003208 petroleum Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
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- 229910000831 Steel Inorganic materials 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
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- 239000004449 solid propellant Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
Images
Classifications
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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
- C10J3/46—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
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched 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
- 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
Abstract
The invention provides a five-channel process burner, which comprises: the central oxygen channel pipe and the four pipelines are sleeved outside the central oxygen channel pipe layer by taking a shaft of the central oxygen channel pipe as an axis, the central oxygen channel pipe is internally provided with a central oxygen channel, and the outer wall of the central oxygen channel and the four pipelines and the space between the inner wall and the outer wall of the pipelines form a central coal water slurry channel, an intermediate oxygen channel, an outer ring coal water slurry channel, an outer ring oxygen channel and a cooling device from inside to outside in sequence. The invention is different from the traditional three-channel coal water slurry burner, has better atomization effect and prolongs the service life of the burner. The five-channel burner head is adopted for impact atomization, and compared with a traditional three-channel burner, the five-channel burner has more two impact channels, so that impact atomization is facilitated. Two pipelines are added, so that the abrasion speed of the head of the water-coal-slurry burner is reduced, and the service life of the burner is prolonged. The five-channel burner adopts the cooling device, so that the service life of the burner is prolonged, and the heat exchange effect is improved.
Description
Technical Field
The invention relates to the technical field of coal chemical industry, in particular to a five-channel process burner.
Background
First, the petroleum and chemical industries in China are under multiple stresses of resources, energy, environment and the like while developing rapidly. Due to the shortage of petroleum and natural gas in China, the relatively abundant resource characteristics of coal and the continuous high-level running state of international oil price, the position of coal in the future development of energy and chemical industry in China becomes more and more important. At present, the energy consumption proportion of coal in China is continuously increased, the proportion of the coal used for power generation and industrial boilers and kilns is about 70%, and the rest of the coal is mainly used as chemical raw materials and civil life. With the continuous development of coal chemical technology, the specific gravity of coal as chemical raw material will be continuously improved. The traditional coal chemical industry is characterized by high energy consumption, high emission, high pollution and low benefit, namely the coal industry is generally called 'three high and one low'. With the continuous progress of science and technology, the novel coal gasification technology is rapidly developed, and the importance of coal as a chemical raw material is generally accepted. The currently adopted method in the coal chemical industry mainly has three approaches: coking of coal, gasification of coal, liquefaction of coal. There are markets for all three approaches, depending on the final product. The direct products of coal coking mainly comprise coke, coal tar and coke oven gas, the direct products of coal gasification mainly comprise synthesis gas, carbon monoxide and hydrogen, and liquid fuel can be directly obtained after coal liquefaction. The coal coking industry is relatively mature, two methods of direct liquefaction and indirect liquefaction exist in coal liquefaction, the mature degree of the technology, the investment and other reasons restrict further development of industrialization and large scale along with continuous maturation of the coal gasification technology, especially gradual improvement of a pressure gasification method and diversification of downstream products, and coal gasification becomes the most important of the coal chemical industry in China at present.
The coal gasification is typically represented by a Texaco coal water slurry gasification furnace. The Texaco gasification method is a pressurized entrained flow gasification process using coal water slurry as a feed. The method is successfully developed by Texaco development companies under Texaco Petroleum company in the United states on the basis of Texaco process for producing synthesis gas by taking heavy oil and natural gas as raw materials. The first set of pilot plant for daily processing of 151 coals was built in 1948 in the united states and tested 20 solid fuels including lignite, bituminous coal, anthracite, coal liquefaction semicoke, petroleum coke, etc. In 1956, a Texaco furnace which processes 100t coal daily and has the operation pressure of 2.8MPa is built in the Morgan City of the United states.
At present, the industrial device scale of Texaco gasification reaches 1600t of daily processed coal amount. It is an exemplary proven, advanced and mature second generation coal gasification technology. The Texaco gasifier is the most rapidly developed and successfully developed one of all the second-generation gasifiers, and has already been industrialized.
And secondly, the working principle of the Texaco coal water slurry gasification furnace. The Texaco coal water slurry pressure gasification furnace belongs to the entrained flow bed sparse phase parallel flow reaction. The coal water slurry is crushed and atomized to be sprayed into the gasification furnace under the action of high-speed oxygen through the nozzle. Oxygen and atomized water-coal-slurry are subjected to high-temperature radiation of a refractory lining in the furnace, and are subjected to a series of complex physical and chemical processes such as preheating, moisture evaporation, coal dry distillation, volatile matter cracking combustion, carbon gasification and the like quickly. Finally, wet coal gas, slag and unreacted carbon which take carbon monoxide, hydrogen, carbon dioxide and water vapor as main components are generated, the wet coal gas, the slag and the unreacted carbon flow downwards together, leave the reaction zone and enter a chilling chamber water bath at the bottom of the furnace, the slag is intercepted in water after being quenched and solidified, falls into a slag tank and is discharged at regular time through a slag discharging system. The coal gas and the saturated steam enter a coal gas cooling and purifying system. Compared with the K-T gasification method which is the entrained flow gasification, the Texaco gasification method is improved in two points, namely, high-pressure gasification is adopted; one is a wet feed in the form of a coal water slurry. Pressurized gasification can effectively increase productivity and gas quality, but it is quite difficult to solve the problems of powder feeding and coal locking under high pressure and thus the way of feeding into the coal water slurry wet process is improved.
The Texaco coal water slurry pressure gasification process Texaco gasification process flow comprises coal slurry preparation, a gasification furnace and a slag discharge system, and cooling and purification of high-temperature coal gas. The raw material coal is wet-milled by a ball mill, a rod mill or a disc mill to make the particle size of the raw material coal reach 40-86% of that of 90/1m, and then the raw material coal is mixed with water or oil to prepare coal slurry, and the content (mass fraction) of the coal slurry is about 60-70%. The prepared coal slurry is hydraulically conveyed to a coal slurry tank and then is sent to a burner of the gasification furnace by a high-pressure coal slurry pump. The working pressure of the high-pressure coal slurry pump is higher than that of the gasification furnace.
The upper part of the gasification furnace is a partial oxidation chamber, the inner wall of the gasification furnace is lined with a plurality of layers of refractory bricks, and the outer wall of the gasification furnace is a cylindrical high-pressure container. The inner wall and the outer wall respectively play roles of high temperature resistance and high pressure resistance, and the lining of the furnace wall works at high temperature for a long time and is subjected to the scouring of high-speed coal slurry, so the lining has the performances of high temperature resistance and wear resistance. The refractory material of the furnace wall lining is mainly chromium oxide, and a small amount of aluminum oxide or magnesium oxide is added at the same time, depending on the acidity or alkalinity of the coal ash. Alumina is suitable for acid ash and magnesia is suitable for alkaline ash.
Coal water slurry and oxygen are continuously injected into the partial oxidation chamber from a burner at the top of the furnace at high speed. The burner working in the high temperature state is provided with a cooling water device. The water-coal-slurry is sprayed into the gasification furnace to react quickly, the gasification process is finished within several seconds, the temperature in the furnace reaches 1300-1500 ℃, and the gasification pressure is 4.3-4.8 MPa. The gasification pressure is determined by the application of the coal gas. If the catalyst is used for synthesizing ammonia, the catalyst can be used as raw material gas for synthesizing methanol, and the pressure can be lower, so that the subsequent working section does not need to be pressurized. The Texaco gasification method adopts liquid slag discharge, and ash in a furnace is melted into liquid slag. The raw gas produced in the partial oxidation chamber entrains slag and flows down into the cooling chamber in the lower part of the gasifier. The lower part of the gasification furnace has two types due to different cooling modes.
One is a chilling type cooling mode, high-temperature crude gas carries slag to flow into a chilling chamber at the lower part, the slag is separated after chilling and solidification and falls into an ash lock hopper, ash and slag enter a slag melting tank after pressure relief in the lock hopper, a slag separator separates crude slag for treatment, separated fine ash and slag are sent to a settling tank, and fine ash and coal coke are settled and are recycled into a furnace or sent out for treatment.
Another cooling method is a waste heat boiler type. The high-temperature raw gas is firstly cooled to about 700 ℃ by a radiation type waste heat boiler, and then the slag is cooled, solidified, dropped into a water quenching area and discharged to a lock hopper. The hot coal gas is further cooled to 300 ℃ by a convection vertical tube type waste heat boiler. The two-stage waste heat boiler obtains high-pressure steam while cooling coal gas, and can be used for power generation.
The coal gas is further cooled, dedusted and desulfurized to obtain clean cold coal gas. And a small amount of removed coal coke and fly ash enter a settling tank for separation and post-treatment or are circularly fed into the furnace. Because the crude gas does not contain tar and phenols, the purification process is simpler and has less pollution to the environment. The existing water-coal-slurry process burner has poor atomization effect, short service life and can not run for a long period.
Disclosure of Invention
The invention provides a burner nozzle for solving the technical problems of poor atomization effect and short service life of the existing water-coal-slurry process burner nozzle.
The invention provides a five-channel process burner, which comprises: the central oxygen channel pipe and the four pipelines are sleeved outside the central oxygen channel pipe layer by taking a shaft of the central oxygen channel pipe as an axis, the central oxygen channel pipe is internally provided with a central oxygen channel, and the outer wall of the central oxygen channel and the four pipelines and the space between the inner wall and the outer wall of the pipelines form a central coal water slurry channel, an intermediate oxygen channel, an outer ring coal water slurry channel, an outer ring oxygen channel and a cooling device from inside to outside in sequence.
Furthermore, the central oxygen channel, the intermediate oxygen channel and the outer ring oxygen channel are all used for communicating a first medium, and the central coal-water slurry channel and the outer ring coal-water slurry channel are all used for communicating a second medium;
a cooling device is arranged on the outer wall of the outer epoxy channel, the cooling device is a cooling water jacket layer or a cooling water coil, the cooling water jacket layer is an inner layer and an outer layer, and cooling water enters the outer layer from the inner layer and flows out; the first medium is at least one of coal water slurry, pulverized coal, natural gas, waste liquid, diesel oil, liquefied gas, coke-oven gas, purge gas, steam, air and oxygen, and the second medium is at least one of coal water slurry, pulverized coal, natural gas, waste liquid, diesel oil, liquefied gas, coke-oven gas, purge gas, steam, air and oxygen.
Furthermore, a channel is arranged in the cooling water jacket layer to communicate the inner layer and the outer layer; the inner layer of the cooling water jacket layer is communicated with a cooling water inlet, and the outer layer of the cooling water jacket layer is communicated with a cooling water outlet; the cooling water jacket layer is used for introducing cooling water;
one end of the central oxygen passage is provided with a central oxygen nozzle, the other end of the central oxygen passage is a central oxygen inlet, and one end of the central coal water slurry passage, the middle oxygen passage, the outer ring coal water slurry passage and the outer ring oxygen passage, which have the same direction as the central oxygen nozzle, are respectively and correspondingly provided with a central coal slurry nozzle, a middle oxygen nozzle, an outer ring coal slurry nozzle and an outer ring oxygen nozzle;
and the ends of the central coal water slurry channel, the middle oxygen channel, the outer ring coal water slurry channel and the outer ring oxygen channel, which have the same direction with the central oxygen inlet, are respectively provided with channel inlets.
Furthermore, a central coal water slurry inlet, an intermediate oxygen inlet, an outer ring coal water slurry inlet and an outer epoxy inlet which are communicated with the central coal water slurry channel, the intermediate oxygen channel, the outer ring coal water slurry channel and the outer epoxy channel are respectively and correspondingly arranged on the outer circumferences of the pipelines in the radial direction; the end part of the central oxygen inlet is provided with a central oxygen flange; flanges are arranged at one ends of the central coal water slurry channel, the middle oxygen channel, the outer ring coal water slurry channel, the outer ring oxygen channel and the central oxygen flange in the same direction, and the flanges seal the end parts through flange covers; and a fixed mounting flange of the cooling water jacket layer is radially arranged on the outer circumference of the cooling water jacket layer.
Furthermore, an octagonal gasket is arranged between the flange and the flange cover, and the flange cover are in threaded connection through bolts and nuts.
Furthermore, mounting flanges are arranged at the end parts of the central oxygen inlet, the central coal water slurry inlet, the intermediate oxygen inlet, the outer ring coal water slurry inlet, the outer epoxy inlet, the cooling water inlet and the cooling water outlet.
Furthermore, a sensor is arranged at the cooling water inlet, and a sensor is arranged at the cooling water outlet.
Further, the central oxygen inlet is provided with a sensor, the central coal water slurry inlet is provided with a sensor, the middle oxygen inlet is provided with a sensor, the outer ring coal water slurry inlet is provided with a sensor, and the outer ring oxygen inlet is provided with a sensor.
And the device further comprises at least one lifting lug, wherein the lifting lug is arranged on the outer side of the five-channel water-coal-slurry process burner.
Furthermore, the cooling water coil is in a pipeline shape and is arranged around the outer wall of the outer epoxy channel.
The invention provides a five-channel process burner, which comprises: the central oxygen channel pipe and the four pipelines are sleeved outside the central oxygen channel pipe layer by taking a shaft of the central oxygen channel pipe as an axis, the central oxygen channel pipe is internally provided with a central oxygen channel, and the outer wall of the central oxygen channel and the four pipelines and the space between the inner wall and the outer wall of the pipelines form a central coal water slurry channel, an intermediate oxygen channel, an outer ring coal water slurry channel, an outer ring oxygen channel and a cooling device from inside to outside in sequence. The central oxygen channel, the intermediate oxygen channel and the outer ring oxygen channel are all used for communicating a first medium, and the central coal-water slurry channel and the outer ring coal-water slurry channel are all used for communicating a second medium; be provided with cooling device on the outer epoxy passageway outer wall, cooling device is cooling water jacket layer or cooling water coil pipe, the cooling water jacket layer is two-layer inside and outside, and the cooling water gets into outer outflow from the inlayer.
The invention is different from the traditional three-channel coal water slurry burner, has better atomization effect and prolongs the service life of the burner.
The five-channel burner head is adopted for impact atomization, and compared with a traditional three-channel burner, the five-channel burner has more two impact channels, so that impact atomization is facilitated.
Two pipelines are added, so that the abrasion speed of the head of the water-coal-slurry burner is reduced, and the service life of the burner is prolonged.
The five-channel burner adopts the cooling device, so that the service life of the burner is prolonged, and the heat exchange effect is improved by arranging the cooling device.
The first medium is supplied by three channels, namely a central oxygen channel, an intermediate oxygen channel and an outer oxygen channel, so that the first medium is combusted more fully.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of a five-channel process burner in an embodiment of the present invention.
FIG. 2 is a schematic view of a showerhead of a five-pass process burner in an embodiment of the invention.
FIG. 3 is a schematic view of a lifting lug of a five-channel process burner in an embodiment of the invention.
Reference numerals:
1. the cooling water system comprises a cooling water inlet, a cooling water outlet, a central oxygen spray head, a central oxygen inlet, a central coal slurry spray head, a middle oxygen spray head, an outer ring coal slurry spray head, an outer ring oxygen spray head, a central coal slurry inlet, a central oxygen inlet, a central coal slurry inlet, an outer ring oxygen inlet, a flange, a central oxygen flange, a flange cover, a flange and a cooling water jacket layer, wherein the central oxygen spray head is 3, the central oxygen spray head is 4, the central oxygen inlet is 5, the outer ring oxygen inlet is 10, the outer ring oxygen inlet is 12, the outer ring oxygen inlet is arranged on the outer ring oxygen inlet, the flange cover is arranged on the flange cover, the flange cover is arranged on the flange cover, the flange cover is arranged on the flange, the cooling water jacket layer, the cooling water, and the cooling water, the cooling water outlet, and the cooling water outlet, and the cooling water outlet, and the cooling water outlet, the cooling.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides a five-channel process burner, which comprises: the central oxygen channel pipe and the plurality of pipelines are sleeved on the central oxygen channel pipe layer by taking the central oxygen channel pipe as an axis, and a central oxygen channel, a central coal water slurry channel, an intermediate oxygen channel, an outer ring coal water slurry channel and an outer epoxy channel are sequentially formed between the inner/outer wall of the central oxygen channel pipe and the inner/outer wall of the plurality of pipelines from inside to outside; the central oxygen channel, the intermediate oxygen channel and the outer ring oxygen channel are all used for communicating a first medium, and the central coal-water slurry channel and the outer ring coal-water slurry channel are all used for communicating a second medium;
and a cooling water jacket layer 19 or a cooling water coil is arranged on the outer wall of the outer epoxy channel, the cooling water jacket layer 19 is an inner layer and an outer layer, and cooling water enters the outer layer from the inner layer and flows out.
The first medium can be at least one of coal water slurry, pulverized coal, natural gas, waste liquid, diesel oil, liquefied gas, coke-oven gas, purge gas, steam, air and oxygen, and the second medium can be at least one of coal water slurry, pulverized coal, natural gas, waste liquid, diesel oil, liquefied gas, coke-oven gas, purge gas, steam, air and oxygen.
The waste gas and the waste liquid can be subjected to blending combustion and gasification, so that the waste gas and the waste liquid can be subjected to harmless treatment.
Wherein, a channel is arranged in the cooling water jacket layer 19 to communicate the inner layer and the outer layer; the inner layer of the cooling water jacket layer 19 is communicated with a cooling water inlet 1, and the outer layer of the cooling water jacket layer 19 is communicated with a cooling water outlet 2; the cooling water jacket layer 19 is used for introducing cooling water.
One end of the central oxygen passage is provided with a central oxygen nozzle 3, the other end of the central oxygen passage is provided with a central oxygen inlet 4, and one end of the central coal water slurry passage, the middle oxygen passage, the outer ring coal water slurry passage and the outer ring oxygen passage, which have the same direction as the central oxygen nozzle, are respectively and correspondingly provided with a central coal slurry nozzle 5, a middle oxygen nozzle 6, an outer ring coal slurry nozzle 7 and an outer ring oxygen nozzle 8.
And the ends of the central coal water slurry channel, the intermediate oxygen channel, the outer ring coal water slurry channel and the outer ring oxygen channel, which have the same direction with the central oxygen inlet, are inlets of the respective channels.
The plurality of pipes of the present invention may be made of a tubular steel material such as stainless steel.
The working principle of the embodiment is as follows: the central oxygen channel, the middle oxygen channel and the outer oxygen channel are communicated with a supply pipeline for providing a first medium, the first medium is provided for the central oxygen channel, the middle oxygen channel and the outer oxygen channel, the central coal-water-slurry channel and the outer coal-water-slurry channel are communicated with a supply pipeline for providing a second medium, and the second medium is provided for the central coal-water-slurry channel and the outer coal-water-slurry channel.
The outer side of the outer epoxy channel is provided with a cooling device for protection, the inner layer enters and exits from the outer layer, the heat exchange effect is enhanced, and the effect of protecting the head of the burner and the outer side of the pipeline is achieved.
The burner nozzle is added while the burner pipeline is added, and the effective gas components after combustion are increased through impact atomization of the first medium or the second medium sprayed from the plurality of heads.
The first medium or the second medium is sprayed out from only one pipeline in the prior art, the speed is high, the abrasion of the first medium or the second medium to the nozzle head is high, the pipelines of the nozzle are added under the condition of the same flow, the first medium or the second medium is sprayed out through a plurality of pipelines, the speed in the pipelines is reduced, the abrasion of the nozzle head with low speed is reduced, and the service life of the nozzle is prolonged.
The nozzle head is added, and the shearing impact effect of the first medium and the second medium is increased by changing the angle of the nozzle head, so that the first medium or the second medium is fully combusted in the nozzle.
The invention is different from the traditional three-channel coal water slurry burner, has better atomization effect and prolongs the service life of the burner.
The five-channel burner head is adopted for impact atomization, and compared with a traditional three-channel burner, the five-channel burner has more two impact channels, so that impact atomization is facilitated.
Two pipelines are added, so that the abrasion speed of the head of the water-coal-slurry burner is reduced, and the service life of the burner is prolonged.
The five-channel burner is provided with the cooling device, so that the service life of the burner is prolonged, and the heat exchange effect is improved by adopting the water jacket.
The first medium is supplied by three channels, namely a central oxygen channel, an intermediate oxygen channel and an outer oxygen channel, so that the second medium is combusted more fully.
In one embodiment, the outer circumferences of the pipelines of the central coal-water slurry channel, the intermediate oxygen channel, the outer ring coal-water slurry channel and the outer ring oxygen channel are respectively and correspondingly provided with a central coal-water slurry inlet 9, an intermediate oxygen inlet 10, an outer ring coal-water slurry inlet 11 and an outer ring oxygen inlet 12 which are communicated with the pipelines in the radial direction; the end of the central oxygen inlet 4 is provided with a central oxygen flange 14.
In the implementation, a central coal water slurry inlet 9 communicated with the central coal water slurry channel, the intermediate oxygen channel, the outer ring coal water slurry channel and the outer ring oxygen channel are respectively and correspondingly arranged on the outer circumferences of the pipelines in the radial direction, so that the external pipelines are conveniently connected; flanges 13 are arranged at one ends of the central coal water slurry channel, the middle oxygen channel, the outer ring coal water slurry channel and the outer ring oxygen channel, which are in the same direction as the central oxygen flange 14, and the flanges 13 seal the end parts through flange covers 15 to ensure the unidirectional flow of oxygen or coal water slurry.
The fixed mounting flange 16 of the cooling water jacket layer 19 is radially arranged on the outer circumference of the cooling water jacket layer 19, so that the installation and the disassembly of the cooling water jacket layer 19 and a water supply pipe are convenient.
In one embodiment, an octagonal gasket 17 is arranged between the flange 13 and the flange cover 15, and the flange 13 and the flange cover 15 are connected through bolts and nuts.
Embodiment this example is provided with octagon cushion 17 between flange 13 and flange lid 15 has guaranteed the leakproofness of junction.
In one embodiment, the ends of the central oxygen inlet, the central coal-water-slurry inlet, the intermediate oxygen inlet, the outer ring coal-water-slurry inlet, the outer epoxy inlet, the cooling water inlet and the cooling water outlet are provided with mounting flanges 18.
In the implementation, mounting flanges 18 are arranged at the end parts of the central oxygen inlet, the central coal water slurry inlet, the intermediate oxygen inlet, the outer ring coal water slurry inlet, the outer epoxy inlet, the cooling water inlet and the cooling water outlet, so that the mounting flanges are convenient to detach and maintain.
In one embodiment, the cooling water inlet 1 is provided with a sensor, and the cooling water outlet 2 is provided with a sensor.
Through the temperature that is provided with the sensor and detects the cooling water that the cooling water delivery port flows in this implementation at cooling water delivery port 2, the staff's of being convenient for observation, when the temperature of the cooling water that the cooling water delivery port flows is too high, when can not reach refrigerated requirement, the staff adjusts the cooling water inflow flow of cooling water inlet 1, adjusts the velocity of flow of cooling water through adjustment cooling water inflow pressure, reaches the cooling effect. The sensor is arranged at the cooling water inlet 1 to judge the inflow pressure of the cooling water, so that the judgment of workers is facilitated.
In one embodiment, the central oxygen inlet 4 is provided with a sensor, the central coal water slurry inlet 9 is provided with a sensor, the middle epoxy inlet 10 is provided with a sensor, the outer ring coal water slurry inlet 11 is provided with a sensor, and the outer epoxy inlet 12 is provided with a sensor.
In the embodiment, the oxygen supply amount of the epoxy inlet 10 is judged by arranging the sensor at the epoxy inlet 10, and when the oxygen supply amount is insufficient, the oxygen supply amount is increased.
The sensor provided by the central oxygen inlet 4 of the present embodiment facilitates detection of the oxygen supply of the central oxygen nozzle and adjustment of the oxygen supply in response to pressure.
In the embodiment, the sensor is arranged at the central coal water slurry inlet 9 to judge the cooling effect and detect the temperature of the coal water slurry.
In the embodiment, the sensor is arranged at the outer ring coal water slurry inlet 11 to detect the coal water slurry and control the supply amount of the coal water slurry according to the pressure.
The present embodiment judges the cooling effect by providing a sensor at the outer epoxy inlet 12.
In one embodiment, the five-channel coal water slurry process burner further comprises at least one lifting lug, and the lifting lug is arranged on the outer circumference of the five-channel coal water slurry process burner.
The lifting lugs are arranged on the outer circumference of the five-channel water-coal-slurry process burner and are uniformly provided with a plurality of lifting lugs, and the lifting lugs are used for facilitating lifting in different directions when the five-channel water-coal-slurry process burner is assembled and disassembled.
As shown in fig. 3, the cooling water coil is in a pipe shape and is disposed around the outer wall of the outer epoxy passage.
In summary, the present invention provides a five-channel process burner, comprising: the central oxygen channel pipe and the four pipelines are sleeved outside the central oxygen channel pipe layer by taking a shaft of the central oxygen channel pipe as an axis, the central oxygen channel pipe is internally provided with a central oxygen channel, and the outer wall of the central oxygen channel and the four pipelines and the space between the inner wall and the outer wall of the pipelines form a central coal water slurry channel, an intermediate oxygen channel, an outer ring coal water slurry channel, an outer ring oxygen channel and a cooling device from inside to outside in sequence. The central oxygen channel, the intermediate oxygen channel and the outer ring oxygen channel are all used for communicating a first medium, and the central coal-water slurry channel and the outer ring coal-water slurry channel are all used for communicating a second medium; be provided with cooling device on the outer epoxy passageway outer wall, cooling device is cooling water jacket layer or cooling water coil pipe, the cooling water jacket layer is two-layer inside and outside, and the cooling water gets into outer outflow from the inlayer.
The invention is different from the traditional three-channel coal water slurry burner, has better atomization effect and prolongs the service life of the burner.
The five-channel burner head is adopted for impact atomization, and compared with a traditional three-channel burner, the five-channel burner has more two impact channels, so that impact atomization is facilitated.
Two pipelines are added, so that the abrasion speed of the head of the water-coal-slurry burner is reduced, and the service life of the burner is prolonged.
The five-channel burner adopts the cooling device, so that the service life of the burner is prolonged, and the heat exchange effect is improved by arranging the cooling device.
The first medium is supplied by three channels, namely a central oxygen channel, an intermediate oxygen channel and an outer oxygen channel, so that the first medium is combusted more fully.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A five-channel process burner is characterized by comprising: the central oxygen channel pipe and the four pipelines are sleeved outside the central oxygen channel pipe layer by taking a shaft of the central oxygen channel pipe as an axis, the central oxygen channel pipe is internally provided with a central oxygen channel, and the outer wall of the central oxygen channel pipe and the four pipelines and the space between the inner wall and the outer wall of the pipelines form a central coal water slurry channel, an intermediate oxygen channel, an outer ring coal water slurry channel, an outer ring oxygen channel and a cooling device from inside to outside in sequence.
2. The five-channel process burner according to claim 1, wherein the central oxygen channel, the intermediate oxygen channel and the outer oxygen channel are all used for introducing a first medium, and the central coal-water-slurry channel and the outer coal-water-slurry channel are all used for introducing a second medium;
a cooling device is arranged on the outer wall of the outer epoxy channel, the cooling device is a cooling water jacket layer (19) or a cooling water coil, the cooling water jacket layer (19) is divided into an inner layer and an outer layer, and cooling water enters the outer layer from the inner layer and flows out; the first medium is at least one of coal water slurry, pulverized coal, natural gas, waste liquid, diesel oil, liquefied gas, coke-oven gas, purge gas, steam, air and oxygen, and the second medium is at least one of coal water slurry, pulverized coal, natural gas, waste liquid, diesel oil, liquefied gas, coke-oven gas, purge gas, steam, air and oxygen.
3. The five-channel process burner according to claim 1 or 2, wherein a channel is arranged in the cooling water jacket layer (19) to communicate the inner layer with the outer layer; the inner layer of the cooling water jacket layer (19) is communicated with the cooling water inlet (1), and the outer layer of the cooling water jacket layer (19) is communicated with the cooling water outlet (2); the cooling water jacket layer (19) is used for introducing cooling water;
one end of the central oxygen passage is provided with a central oxygen nozzle (3), the other end of the central oxygen passage is provided with a central oxygen inlet (4), and one end of the central coal water slurry passage, the middle oxygen passage, the outer ring coal water slurry passage and the outer ring oxygen passage, which have the same direction as the central oxygen nozzle, are respectively and correspondingly provided with a central coal slurry nozzle (5), a middle oxygen nozzle (6), an outer ring coal slurry nozzle (7) and an outer ring oxygen nozzle (8);
and the ends of the central coal water slurry channel, the middle oxygen channel, the outer ring coal water slurry channel and the outer ring oxygen channel, which have the same direction with the central oxygen inlet, are respectively provided with channel inlets.
4. The five-channel process burner according to claim 2, wherein the outer circumferences of the central coal-water slurry channel, the intermediate oxygen channel, the outer ring coal-water slurry channel and the outer oxygen channel are respectively and correspondingly provided with a central coal-water slurry inlet (9), an intermediate oxygen inlet (10), an outer ring coal-water slurry inlet (11) and an outer ring oxygen inlet (12) which are communicated with the central coal-water slurry channel, the intermediate oxygen channel, the outer ring coal-water slurry channel and the outer ring oxygen channel in the radial direction; the end part of the central oxygen inlet (4) is provided with a central oxygen flange (14);
flanges (13) are arranged at one ends of the central coal water slurry channel, the middle oxygen channel, the outer ring coal water slurry channel and the outer ring oxygen channel, which have the same direction as the central oxygen flange (14), and the flanges (13) seal the end parts through flange covers (15); and a fixed mounting flange (16) of the cooling water jacket layer (19) is radially arranged on the outer circumference of the cooling water jacket layer (19).
5. The five-channel process burner according to claim 4, wherein an octagonal gasket (17) is arranged between the flange (13) and the flange cover (15), and the flange (13) and the flange cover (15) are screwed through bolts and nuts.
6. The five-channel process burner according to claim 5, wherein mounting flanges (18) are arranged at the ends of the central oxygen inlet, the central coal-water-slurry inlet, the intermediate oxygen inlet, the outer ring coal-water-slurry inlet, the outer epoxy inlet, the cooling water inlet and the cooling water outlet.
7. The five-channel process burner according to claim 6, wherein the cooling water inlet (1) is provided with a sensor and the cooling water outlet (2) is provided with a sensor.
8. The five-pass process burner according to claim 7, characterized in that the central oxygen inlet (4) is provided with a sensor, the central coal-water slurry inlet (9) is provided with a sensor, the intermediate oxygen inlet (10) is provided with a sensor, the outer ring coal-water slurry inlet (11) is provided with a sensor, and the outer ring oxygen inlet (12) is provided with a sensor.
9. The five-channel process burner of claim 8, further comprising at least one lifting lug, wherein the lifting lug is arranged on the outer side of the five-channel coal-water-slurry process burner.
10. The five-pass process burner according to claim 1, wherein the cooling water coil is in the shape of a pipe and is arranged around the outer wall of the outer epoxy passage.
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| CN202111067508.XA CN113999700A (en) | 2021-09-13 | 2021-09-13 | Five-channel process burner |
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| CN202111067508.XA CN113999700A (en) | 2021-09-13 | 2021-09-13 | Five-channel process burner |
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| US20030196576A1 (en) * | 2002-04-18 | 2003-10-23 | Whittaker Gary Scott | Coal gasification feed injector shield with oxidation-resistant insert |
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| WO2016037846A1 (en) * | 2014-09-11 | 2016-03-17 | Siemens Aktiengesellschaft | Compact burner for an entrained-flow gasifier, having no liquid cooling |
| CN111676064A (en) * | 2020-06-03 | 2020-09-18 | 清华大学 | Coal gasification burner and gasification furnace thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030196576A1 (en) * | 2002-04-18 | 2003-10-23 | Whittaker Gary Scott | Coal gasification feed injector shield with oxidation-resistant insert |
| CN201850256U (en) * | 2010-10-13 | 2011-06-01 | 神华集团有限责任公司 | Process burner and system for gasifying water coal slurry |
| CN203007227U (en) * | 2012-11-26 | 2013-06-19 | 清华大学 | Water-coal-slurry burner nozzle |
| WO2016037846A1 (en) * | 2014-09-11 | 2016-03-17 | Siemens Aktiengesellschaft | Compact burner for an entrained-flow gasifier, having no liquid cooling |
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