CN108753371B - High-temperature combustor - Google Patents
High-temperature combustor Download PDFInfo
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- CN108753371B CN108753371B CN201810895930.6A CN201810895930A CN108753371B CN 108753371 B CN108753371 B CN 108753371B CN 201810895930 A CN201810895930 A CN 201810895930A CN 108753371 B CN108753371 B CN 108753371B
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- 238000002309 gasification Methods 0.000 claims abstract description 65
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 17
- 239000007769 metal material Substances 0.000 claims description 10
- 239000003245 coal Substances 0.000 abstract description 17
- 230000008859 change Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 37
- 238000006243 chemical reaction Methods 0.000 description 19
- 239000010410 layer Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009991 scouring Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 4
- 229910052755 nonmetal Inorganic materials 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 229910000617 Mangalloy Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- CBBAERKNWYDBNY-UHFFFAOYSA-N [Si].[Mn].[Mo] Chemical compound [Si].[Mn].[Mo] CBBAERKNWYDBNY-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
- C10J3/76—Water jackets; Steam boiler-jackets
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
- C10J2300/1223—Heating the gasifier by burners
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
Abstract
The utility model discloses a high-temperature combustor, and belongs to the technical field of coal gasification. The high temperature combustor includes: the vortex type vortex flow device comprises a vortex scroll, a rectification cylinder and a gasification burner, wherein the rectification cylinder is connected to the bottom of the vortex scroll and is coaxially arranged with the bottom of the vortex scroll, the gasification burner is positioned at the center of the vortex scroll, the outside of the vortex scroll is in a vortex shape, and a wear-resistant heat insulation lining layer is arranged inside the vortex scroll. The utility model constructs a rotational flow channel in the rotational flow volute, which can change the movement track of the crude gas from linear movement to spiral downward, increase the residence time of the gas in the downstream entrained flow gasifier, and make the imported crude gas fully mix and react with the gasifying agent of the gasifying burner.
Description
Technical Field
The utility model belongs to the technical field of coal gasification, and particularly relates to a high-temperature combustor.
Background
In the technical field of coal gasification, the traditional fluidized bed and entrained flow gasification processes have advantages and disadvantages, and the fluidized bed has the advantages that a raw material coal treatment and conveying system is simpler, a coal mill and a pressurized conveying system are not needed, the investment is smaller, but the gasification temperature of the fluidized bed is lower, and the fly ash and residue carbon are more. The entrained flow has larger investment on a raw material coal treatment and pressurizing conveying system, but has higher gasification reaction temperature, smaller carbon content of fly ash and slag and high gas heat value. Therefore, the two coal gasification technologies are effectively combined, and the method is one leading direction of the development of the subsequent coal gasification technologies.
The technology of combining the fluidized bed and the air flow bed is that high-temperature raw gas at about 950 ℃ from the fluidized bed gasifier is sent into the air flow bed gasifier through a special burner for secondary gasification reaction, thus solving the problem of high residual carbon in fly ash of the fluidized bed gasifier, solving the problem of large investment in raw material coal treatment and pressurizing conveying systems of the air flow bed gasifier, greatly improving the overall carbon conversion rate and gas calorific value and having very broad market prospect.
The utility model patent (patent publication number is CN205974428U, publication date is 22 days of 2017 2 month) discloses a step combined bed gasification system, which comprises: the device comprises a coal conveying unit, a primary fluidized bed gasification unit, a secondary entrained flow gasification unit, a waste heat recovery unit and a waste residue collection unit; the coal conveying unit is communicated with the primary fluidized bed gasification unit, the primary fluidized bed gasification unit is communicated with the secondary entrained flow gasification unit, the secondary entrained flow gasification unit is communicated with the waste heat recovery unit, and the waste heat recovery unit is communicated with the waste residue collection unit. The step combined bed gasification system of the scheme can carry out step gasification on coal dust, and realizes high-efficiency conversion of coal. The most central part of the technical scheme is a combustor for carrying out secondary gasification reaction by using high-temperature gas, but the temperature of the imported raw gas is high (900-1000 ℃), a large amount of fly ash is carried, the requirements on the temperature resistance and dust scouring resistance of the combustor are high, meanwhile, the high-temperature raw gas is required to be capable of improving the reaction intensity according to a special movement track, the residence time in the gasification furnace is increased, and the imported raw gas and the gasifying agent of the gasification burner are fully mixed and react, so that the combustor suitable for using the high-temperature gas as fuel is urgently needed.
Disclosure of Invention
1. Problems to be solved
Aiming at the problems of high-temperature scouring of the prior inlet solid raw gas and insufficient reaction of the inlet raw gas and gasifying agent of the gasifying burner, the utility model provides a high-temperature combustor so as to meet the special requirements on the combustor in the combustion technology using the high-temperature gas as fuel.
2. Technical proposal
In order to solve the problems, the utility model adopts the following technical scheme.
A high temperature combustor, comprising: the rectification cylinder is connected to the bottom of the cyclone volute and is coaxially arranged with the cyclone volute, the gasification burner penetrates through the cyclone volute, the rectifying cylinder and extends out of the rectifying cylinder, the outside of the cyclone volute is in a vortex shape, and a wear-resistant heat-insulating lining layer is arranged inside the cyclone volute.
Preferably, the rectifying cylinder is a conical cylinder or a circular cylinder, and a wear-resistant heat-insulating lining layer is arranged inside the rectifying cylinder.
Preferably, a water cooling jacket is arranged at the bottom of the rectifying cylinder.
Preferably, the inner wall of the water cooling jacket is provided with a wear-resistant inner liner.
Preferably, the water cooling jacket is connected with the rectifying cylinder through a first flange, and the second flange is arranged outside the rectifying cylinder.
Preferably, the swirl scroll is arranged at a tangential angle to the direction of the plane of the inlet of the burner.
Preferably, the number of the air inlets is at least one.
Preferably, the gasification burner is a tubular structure formed by a water-cooling structure, the middle is a gasifying agent channel, and the lowest end of the channel is provided with a swirl plate.
Preferably, a wear-resistant sleeve is arranged outside the gasification burner.
Preferably, the wear-resistant sleeve is made of a wear-resistant metal material, a wear-resistant nonmetal material or a combination of the wear-resistant metal material and the wear-resistant nonmetal material.
3. Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
(1) The high-temperature combustor comprises a cyclone volute, a rectifying cylinder and a gasification burner, wherein the rectifying cylinder is connected to the bottom of the cyclone volute and is coaxially arranged with the rectifying cylinder, the gasification burner is positioned in the center of the cyclone volute, the outside of the cyclone volute is in a vortex shape, a wear-resistant heat-insulating lining layer is arranged in the cyclone volute, a cyclone channel is formed in the cyclone volute, the movement track of raw gas can be changed from linear movement to spiral downward, the residence time of the gas in a downstream entrained-flow gasifier is prolonged, the raw gas at an inlet is fully mixed and reacted with the gasifying agent of the gasification burner, and the problems of high-temperature scouring of the raw gas at the inlet and insufficient reaction of the raw gas at the inlet with the gasifying agent of the gasification burner are solved.
(2) The rectifying cylinder is a conical cylinder or a circular cylinder, the uniform upper and lower flow rates can be ensured by adopting the circular cylinder, the outlet flow rate is accelerated by adopting the conical cylinder, the uniform and sufficient reaction between the raw gas at the inlet and the gasifying agent of the gasifying burner is ensured, and the wear-resistant heat-insulating lining layer is arranged inside the rectifying cylinder, so that the service life of the burner equipment is prolonged.
(3) The bottom of the rectifying cylinder is provided with the water cooling sleeve, the lower end of the burner has the temperature of more than 1500 ℃ due to the combustion reaction, and a reasonable cooling structure is adopted to ensure the service life of equipment.
(4) The inner wall of the water cooling jacket is provided with the wear-resistant lining layer, so that the wear resistance of the water cooling jacket is further improved.
(5) The water cooling jacket is connected with the bottom of the rectifying cylinder through the first flange, and the rectifying cylinder is connected with the bottom of the cyclone volute through the second flange, so that the combustor is convenient to detach and replace.
(6) The air inlet of the burner forms a tangential angle with the center of the vortex scroll, so that high-temperature solid-containing gas is prevented from directly flushing the gasification burner to cause equipment abrasion, and the spiral downward movement of the whole airflow field is facilitated; the number of the air inlets is at least one, so that the coal gas can rotate and move downwards along the inner wall of the equipment after entering.
(7) The gasification burner is of a tubular structure formed by a water-cooling structure, the middle part of the gasification burner is provided with a gasifying agent channel, and the lowest end of the channel is provided with a cyclone sheet, so that the gasifying agent can rotate along a certain direction, and the reaction intensity is increased.
(8) The wear-resistant sleeve is arranged outside the gasification burner, plays a role in isolation, reduces the risk, and can be extracted and replaced after being damaged, so that the maintenance cost is reduced.
(9) The wear-resistant sleeve is made of wear-resistant metal materials, wear-resistant nonmetallic materials or a combination of the wear-resistant metal materials and the wear-resistant nonmetallic materials, so that the wear resistance of the wear-resistant sleeve is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a burner of the present utility model;
FIG. 2 is a top cross-sectional view of a spiral flow volute containing one air inlet;
FIG. 3 is a top cross-sectional view of a swirl volute containing two air inlets;
fig. 4 is an enlarged schematic view of the swirl plate.
In the figure: 1. a swirl scroll; 2. a rectifying cylinder; 3. a water cooling jacket; 4. wear-resistant sleeve; 5. gasifying burner; 6. a first connection flange; 7. a second connection flange; 8. an air inlet; 9. an air outlet; 10. swirl plate.
Detailed Description
The utility model is further described below with reference to the drawings and specific embodiments.
Example 1
As shown in fig. 1-2, a high temperature combustor of the present embodiment includes: the vortex flow volute 1, the rectifying cylinder 2 and the gasification burner 5 are arranged coaxially, wherein the rectifying cylinder 2 is connected to the bottom of the vortex flow volute 1, and the gasification burner 5 is located in the center of the vortex flow volute 1.
The existing entrained flow gasification technology is usually in a four-burner side-firing or overhead single burner structure, the temperature of gasifying agent is low, coal powder is required to be sent into a burner in a pneumatic conveying or coal water slurry mode, and a series of valves (such as a coal powder angle valve, a three-way valve, a nuclear flowmeter and the like) are required to be arranged on a pipeline to ensure the continuous conveying stability of the coal powder. Meanwhile, an ignition burner and a start-up burner are arranged in the gasifier, the manufacturing cost of the pipeline valve and the burner is very high, the sum of the cost is almost equal to half of the manufacturing cost of the gasifier body, and meanwhile, the maintenance cost is high and the replacement period is short.
The coal feeding line of the device is directly sent from the first-stage fluidized bed gasifier, no control valve is needed in the middle, the temperature of the incoming air is high, an ignition burner and a start-up burner are not needed, oxygen is directly introduced from the gasification burner 5 in the middle of the burner for combustion, and compared with the traditional technology, the device can save a lot of cost. Meanwhile, as the gas quantity from the first-stage gasification furnace is larger, the raw gas reaching the burner is relatively stable as long as the normal gasification reaction of the first-stage gasification furnace can be maintained, and the fluctuation of temperature, pressure, gas quantity and the like is relatively small, thereby being beneficial to the stable gasification reaction.
The outside of the cyclone volute 1 of the high-temperature combustor is in a vortex shape, a cyclone channel is formed in the cyclone volute 1, the movement track of raw gas can be changed from linear movement to spiral downward, the residence time of the gas in a downstream entrained-flow gasification furnace is prolonged, the raw gas at the inlet is fully mixed and reacted with gasifying agent of the gasification burner 5, and finally the raw gas is discharged along the air outlet 9. In the process, solid particles in the gas are thrown to the wall surface of the gasifier under the action of centrifugal force, so that the water-cooling wall-mounted slag effect is better, the raw gas and the gasifying agent can be more uniformly mixed by spiral movement, and the gasification reaction effect is enhanced.
In the embodiment, the abrasion-resistant heat-insulating lining layer is arranged inside the cyclone volute 1, so that the problem of high-temperature scouring of the solid raw gas in the inlet is solved. Wherein, the material of the wear-resistant heat-insulating lining layer can adopt wear-resistant castable, plastic, ramming material, wear-resistant brick, corundum, ceramic and the like.
The burner body is manufactured by adding the wear-resistant castable into the carbon steel shell, and has the advantages of low processing and manufacturing difficulty, low cost, short production period and high reliability.
The device has the advantages of simple structure, strong adaptability to the change of process design, low difficulty in optimizing and reforming the subsequent process design, and large capacity of regulating the production operation load of the process.
Example 2
Referring to fig. 1, a high temperature combustor of the present embodiment has substantially the same structure as that of embodiment 1, and further:
the rectifying cylinder 2 is a conical cylinder or a circular cylinder. The structure of the rectifying cylinder 2 depends on the choice of the gas flow rate at the outlet of the burner, and the flow rate at the outlet of the lower channel is high, so that the rectifying cylinder 2 adopts a circular cylinder to ensure the consistency of the upper flow rate and the lower flow rate, and the rectifying cylinder 2 adopts a conical cylinder to accelerate the outlet flow rate, and the two choices are determined according to the analogue calculation of the outlet flow rate. Further ensures that the raw gas at the inlet reacts uniformly and fully with the gasifying agent of the gasifying burner 5.
Wherein, the inside wear-resisting adiabatic inner liner that is equipped with of rectifying cylinder 2 prevents that the high temperature from causing social security damage, prolongs the life of combustor equipment.
Example 3
Since the lower end of the burner has a temperature of more than 1500 ℃ due to the combustion reaction, a reasonable cooling structure is required to ensure the service life of the device, which is different from embodiment 1 or 2 in that in this embodiment, the bottom of the rectifying cylinder 2 is provided with a water cooling jacket 3. The water cooling jacket 3 is a cooling structure and has low wall temperature.
In order to increase the wear resistance, further, 3 inner walls of the water-cooling jacket are provided with wear-resistant lining layers, the upper part of the water-cooling jacket 3 is a steel cylinder body, the inside is provided with wear-resistant heat-insulating lining layers, the upper end of the water-cooling jacket is provided with a connecting flange, and the water-cooling jacket is connected with the rectifying cylinder 2, so that the water-cooling jacket can be conveniently detached and maintained. The lower part of the water cooling jacket 3 is of a water cooling structure, and the temperature of a reaction zone reaches 1500-2000 ℃ because the raw gas and the gasifying agent are mixed at the outlet of the burner to carry out gasification reaction, and the temperature in the range cannot be resisted for a long period by the heat insulating material in the general sense at the moment, so that the water cooling structure is adopted.
In this embodiment, alternatively, the water cooling structure may be a water cooling jacket, a water cooling wall, a water cooling coil, or the like. The water jacket is selected for simple manufacture, the cost is low, the water flow is uneven, the water flow of the water cooling wall and the water cooling coil pipe is even, the heat exchange effect is good, the manufacture is complex, and the cost is high.
The traditional burner generally adopts a full water cooling jacket structure outside, and the high-temperature burner organically combines the two structures of the heat insulation lining and the water cooling jacket 3 because of the complexity of working conditions. The upper part of the burner cannot adopt the water cooling jacket because the upper part is directly flushed by high-temperature particles, the structural form of good flushing resistance is needed, and meanwhile, the temperature of incoming gas can be reduced by adopting the water cooling jacket, so that the gasification efficiency is influenced. The lower part of the utility model uses the water jacket 3 because the air flow is now wholly downward and the flushing of the wall surface is much less than in the upper part. Meanwhile, the gasification reaction temperature at the bottom of the burner is high, so that a refractory structure cannot be adopted.
Meanwhile, the wear-resistant spraying or overlaying wear-resistant metal and other modes can be adopted on the inner wall surface of the water cooling sleeve 3 contacted with the coal gas, so that the wear resistance can be further improved.
Example 4
The structure of the high-temperature combustor is basically the same as that of the embodiment 3, and for equipment maintenance and replacement convenience, referring to fig. 1, the water cooling jacket 3 is connected with the bottom of the rectifying cylinder 2 through a first flange 6, and the first flange 6 is arranged on the outer side of the casing of the rectifying cylinder 2 and is matched with a flange on the top of the entrained-flow gasifier. The second flange 7 is arranged outside the rectifying cylinder 2, and the second flange 7 is used for enabling the whole burner to be connected with the downstream gasifier in a pairing mode, so that the burner can be conveniently detached and replaced.
The first flange 6 and the second flange 7 are used to facilitate manufacturing, installation and maintenance of the burner, and in other embodiments, welding or other manners may be used.
Example 5
Referring to fig. 2, in order to prevent the high temperature solid-containing gas from directly scouring the gasification burner 5 and causing equipment wear, the gas inlet 8 of the burner of the high temperature burner of this embodiment forms a tangential angle with the center of the cyclone housing 1. Because the gasification burner 5 is arranged at the central position of the burner device, the gasification burner 5 can be prevented from being directly flushed by high-temperature solid-containing gas, so that the device is worn, and the spiral downward movement of the whole airflow field is facilitated.
Referring to fig. 2-3, the number of the air inlets 8 is at least one, and may be a plurality of, fig. 3 shows that the spiral-flow volute comprises two air inlets 8, and the two air inlets 8 are both tangential to the center of the spiral-flow volute 1, so that the gas can rotate and move downwards along the inner wall of the equipment after entering.
Example 6
Referring to fig. 1, the structure of the high temperature burner in this embodiment is substantially the same as that of embodiment 1, and in order to increase the reaction intensity, the gasification burner 5 is a tubular structure formed by a water-cooling structure, the middle is a gasification agent channel, the burner is disposed in the center of the spiral-flow volute 1, and flange connection is adopted between the burner and the spiral-flow volute 1 at the top, and the burner water-cooling jacket may adopt a water-cooling jacket, a water-cooling wall, or a water-cooling coil pipe. Referring to fig. 4, a cyclone sheet 10 is disposed at the lower end of the gasifying agent channel, at least one of the cyclone sheets 10 is provided, and when gas passes through the cyclone sheet 10, the gasifying agent is rotated in a certain direction by the rotation of the cyclone sheet 10, so that the reaction intensity is increased and the reaction is accelerated.
Example 7
The embodiment of example 7 is substantially the same as that of example 1 or 6, except that, referring to fig. 1, the gasification burner 5 is provided with a wear-resistant sleeve 4 at the outside thereof for the purpose of later maintenance replacement and hazard reduction.
Because the inside of the gasification burner 5 is pure oxygen, a certain danger is caused, and the wear-resistant sleeve 4 is additionally arranged outside the gasification burner 5, so that the effect of isolation is achieved, and the danger is reduced. The wear-resistant sleeve 4 is positioned outside the gasification burner 5 and is connected with the gasification burner 5 at the upper end through a flange, and the main body of the wear-resistant sleeve 4 is a tubular structure made of wear-resistant materials, and can be made of wear-resistant metal materials, wear-resistant nonmetallic materials or a combination of the two materials. Wherein the wear-resistant material can be wear-resistant alloy, wear-resistant spraying, wear-resistant overlaying and the like. The wear-resistant metal materials comprise high manganese steel, chrome molybdenum silicon manganese steel, tungsten carbide metal wear-resistant materials, and the wear-resistant nonmetallic materials comprise rubber wear-resistant ceramic paint, wear-resistant ceramic lining plates and the like. The wear-resistant sleeve 4 is used as a protective layer of the gasification burner and can bear the erosion of high-temperature coal gas. And the independent wear-resistant sleeve 4 can be extracted and replaced after being damaged, so that the maintenance cost is reduced.
In other embodiments, the wear-resistant layer can be arranged outside the gasification burner 5, but if the wear-resistant layer is damaged, the wear-resistant layer needs to be replaced along with the whole gasification burner 5, which is not beneficial to later maintenance and replacement and has high maintenance cost.
Example 8
It should be noted that, referring to fig. 1, further, on the basis of embodiment 7, the material adopted by the wear-resistant sleeve 4 in this embodiment is a wear-resistant metal material, a wear-resistant nonmetal material or a combination of a wear-resistant metal material and a wear-resistant nonmetal material, so that the wear-resistant performance of the wear-resistant sleeve 4 is increased, the service life of the burner is prolonged, and the high-temperature burner of the present utility model has low manufacturing cost and is convenient for industrialization.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (8)
1. A high temperature combustor, comprising: the device comprises a cyclone volute (1), a rectifying cylinder (2) and a gasification burner (5), wherein the rectifying cylinder (2) is connected to the bottom of the cyclone volute (1) and is coaxially arranged with the bottom of the cyclone volute, the gasification burner (5) penetrates through the cyclone volute (1) and the rectifying cylinder (2) and extends out of the rectifying cylinder (2), the outside of the cyclone volute (1) is in a vortex shape, and a wear-resistant heat insulation lining layer is arranged inside the cyclone volute (1);
the swirl volute (1) is arranged to form a tangential angle with the direction of the plane of the air inlet (8) of the burner;
the gasification burner (5) is a tubular structure formed by a water cooling structure, the middle is a gasifying agent channel, and the lowest end of the channel is provided with a swirl plate (10).
2. A high temperature combustor according to claim 1, characterized in that the rectifying cylinder (2) is a conical cylinder or a circular cylinder, and a wear-resistant heat-insulating lining layer is arranged inside the rectifying cylinder (2).
3. A high temperature burner according to claim 1 or 2, characterized in that the bottom of the rectifying cylinder (2) is provided with a water cooling jacket (3).
4. A high temperature burner according to claim 3, characterized in that the inner wall of the water-cooled jacket (3) is provided with a wear-resistant inner liner.
5. The high-temperature combustor according to claim 4, wherein the water cooling jacket (3) is connected with the rectifying cylinder (2) through a first flange (6), and a second flange (7) is arranged outside the rectifying cylinder (2).
6. A high temperature burner according to claim 1, characterized in that the number of air inlets (8) is at least one.
7. A high temperature burner according to claim 1, characterized in that the outside of the gasification burner (5) is provided with a wear-resistant sleeve (4).
8. A high temperature burner according to claim 7, characterized in that the wear-resistant sleeve (4) is made of a wear-resistant metallic material, a wear-resistant nonmetallic material or a combination of a wear-resistant metallic material and a wear-resistant nonmetallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN108753371A (en) | 2018-11-06 |
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