CN216513709U - Five-channel process burner - Google Patents

Abstract

The utility model provides a five-channel process burner, which comprises: the central oxygen channel pipe, and use the axle of central oxygen channel pipe overlaps layer upon layer as the axis and establishes four pipelines outside the central oxygen channel pipe, be central oxygen channel in the central oxygen channel pipe, the outer wall of central oxygen channel and four the space between the inner wall of pipeline and the outer wall forms central coal slurry passageway, intermediate oxygen passageway, outer loop coal slurry passageway, outer loop oxygen passageway, cooling device from inside to outside in proper order. The utility model 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

Five-channel process burner

Technical Field

The utility model 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.

SUMMERY OF THE UTILITY MODEL

The utility model 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 utility model 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 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 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 utility model 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 utility model 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 coal water 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 utility model 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 utility model. The objectives and other advantages of the utility model 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 utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

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 present invention;

FIG. 3 is a schematic structural diagram of an outer epoxy channel of a five-channel process burner according to an embodiment of the present 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 utility model 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 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 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 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 one end of 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 utility model 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.

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.

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 is increased when the oxygen supply amount is insufficient, by determining the degree of the oxygen supply amount from the intermediate oxygen inlet 10 by providing the intermediate oxygen inlet 10 with a sensor.

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 utility model 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 utility model 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 utility model. 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 use the axle of central oxygen channel pipe overlaps layer upon layer as the axis and establishes four pipelines outside the central oxygen channel pipe, be central oxygen passageway in the central oxygen channel pipe, the outer wall of central oxygen channel pipe and four the space between the inner wall of pipeline and the outer wall forms central coal slurry passageway, intermediate ring oxygen passageway, outer loop coal slurry passageway, outer loop oxygen passageway, cooling device from inside to outside in proper order.

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 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 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 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;

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 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 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 respectively provided with channel inlets.

4. The five-channel process burner according to claim 3, 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 2, 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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