CN112779059A - Combustion chamber applied to entrained flow gasifier - Google Patents
Combustion chamber applied to entrained flow gasifier Download PDFInfo
- Publication number
- CN112779059A CN112779059A CN202110013323.4A CN202110013323A CN112779059A CN 112779059 A CN112779059 A CN 112779059A CN 202110013323 A CN202110013323 A CN 202110013323A CN 112779059 A CN112779059 A CN 112779059A
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- combustion chamber
- combustor
- burner
- center line
- entrained
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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
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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
- C10J3/485—Entrained flow gasifiers
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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
- C10J3/50—Fuel charging devices
- C10J3/506—Fuel charging devices for entrained flow gasifiers
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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
- C10J3/74—Construction of shells or jackets
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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
- C10J3/74—Construction of shells or jackets
- C10J3/76—Water jackets; Steam boiler-jackets
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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
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
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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
- 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
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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
- 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
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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
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
- C10J2300/1223—Heating the gasifier by burners
Abstract
The invention discloses a combustion chamber applied to an entrained flow gasifier, which comprises a shell, a heat insulation layer, a burner, a slag hole and a combustion chamber, wherein a hollow accommodating cavity is arranged in the shell, the heat insulation layer is arranged in the accommodating cavity in the shell, the combustion chamber is arranged in the heat insulation layer, the top of the shell is provided with the burner, the burner penetrates through the heat insulation layer and extends into the combustion chamber, and the bottom of the combustion chamber is provided with the slag hole. The effect is as follows: the position arrangement mode of the combustion chamber applied to the entrained flow gasifier achieves the aim that the axial direction of the burner and the slag hole is not directly opposite, so that pulverized coal particles sprayed by the burner are prevented from directly escaping from the slag hole, the back mixing entrainment rate of the pulverized coal particles in the combustion chamber along with airflow can be obviously improved, the trapping rate of a liquid slag layer on the inner wall of the combustion chamber on the pulverized coal particles is improved, carbon residue of ash is reduced, and the carbon conversion rate is improved.
Description
Technical Field
The invention relates to the technical field of coal gasification, in particular to a combustion chamber applied to an entrained flow gasifier.
Background
The advanced technology of the coal gasification technology as clean coal utilization is the basis of modern coal chemical industry, and through years of technical research and development and industrial application, the coal gasification basically forms three forms of a fixed bed, a fluidized bed and an air flow bed. Among them, entrained flow has become the mainstream of coal gasification technology due to the advantages of high gasification efficiency, strong adaptability of coal types, environmental friendliness, etc.
The burner of the combustion chamber of the traditional entrained flow gasifier is directly opposite to the slag hole in the axial direction, pulverized coal particles and oxygen are sprayed into the combustion chamber through the burner, a part of pulverized coal particles are not entrained by airflow all the time and directly escape from the slag hole, the carbon residue in ash is high, and the carbon conversion rate is low.
Disclosure of Invention
Therefore, the present invention provides a combustion chamber applied to an entrained-flow gasifier to solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
according to the first aspect of the invention, the combustion chamber applied to the entrained flow gasifier comprises a shell, a heat insulation layer, a burner, a slag hole and a combustion chamber, wherein a hollow accommodating cavity is formed in the shell, the heat insulation layer is arranged in the accommodating cavity in the shell, the combustion chamber is arranged in the heat insulation layer, the burner is arranged at the top of the shell, the burner penetrates through the heat insulation layer and extends into the combustion chamber, and the slag hole is formed in the bottom of the combustion chamber.
Further, the heat insulation layer is a refractory brick structure built in the outer shell; or the heat insulation layer is a water-cooling membrane wall arranged in the shell.
Furthermore, the central line of the burner and the central line of the slag hole are arranged in a staggered mode.
Furthermore, an included angle is formed between the central line of the burner and the central line of the combustion chamber, and the central line of the slag hole and the central line of the combustion chamber are coaxially arranged.
Furthermore, the central line of the burner nozzle and the central line of the combustion chamber are coaxially arranged, and the central line of the slag hole and the central line of the combustion chamber are eccentrically arranged.
Further, the burner comprises a water cooling assembly, the center line of the burner and the center line of the slag hole are coaxially arranged, and the water cooling assembly is arranged in the combustion chamber and is positioned right above the slag hole.
Further, the water cooling is as the subassembly and includes water cooling as the water inlet coupling and water cooling as the delivery pipe coupling, be provided with water cooling on the shell of combustion chamber and be as the water inlet and water cooling as the delivery port, water cooling is as the water inlet pipe coupling and passes the insulating layer with water cooling is as the water inlet and is connected, water cooling is as the delivery pipe coupling pass the insulating layer with water cooling is as the delivery port and is connected.
Further, the water cooling assembly is in a conical coil pipe structure formed by welding a finned pipe in a surrounding mode; or the water cooling component is a conical jacket structure welded by a steel plate or a steel forging.
Further, the water cooling module is provided with a through hole in the center.
Furthermore, pulverized coal particles and an oxidant are mixed and sprayed into the combustion chamber through the burner to generate gasification reaction, the reaction temperature is continuously maintained to be higher than 1200 ℃, the arrangement of the heat insulation layer isolates the high temperature in the combustion chamber so that the working temperature of the shell of the combustion chamber is below the allowable temperature, an upper gas back mixing area is formed in the upper area of the combustion chamber through the gas sprayed downwards at high speed by the burner, the central gas flow meets a water cooling component arranged on the upper part of the slag notch in the downward movement process, the flow direction of the gas flow is changed, and meanwhile, a lower gas back mixing area is formed by means of negative pressure formed by the upward entrainment speed at the bottom of the upper gas back mixing area.
The invention has the following advantages: the position arrangement mode of the combustion chamber applied to the entrained flow gasifier achieves the aim that the axial direction of the burner and the slag hole is not directly opposite, so that pulverized coal particles sprayed by the burner are prevented from directly escaping from the slag hole, the back mixing entrainment rate of the pulverized coal particles in the combustion chamber along with airflow can be obviously improved, the trapping rate of a liquid slag layer on the inner wall of the combustion chamber on the pulverized coal particles is improved, carbon residue of ash is reduced, and the carbon conversion rate is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a cross-sectional view of a combustion chamber applied to an entrained-flow gasifier according to some embodiments of the present invention.
Fig. 2 is a cross-sectional view of a combustion chamber applied to an entrained-flow gasifier according to some embodiments of the present invention.
Fig. 3 is a cross-sectional view of a combustion chamber applied to an entrained-flow gasifier according to some embodiments of the present invention.
Fig. 4 is a schematic diagram of a combustion chamber applied to an entrained-flow gasifier according to some embodiments of the present invention.
In the figure: 1. the burner comprises a shell, 2 parts of a heat insulation layer, 3 parts of a burner, 4 parts of a slag hole, 5 parts of water cooling as an assembly, 6 parts of a combustion chamber, 11 parts of water cooling as a water inlet, 12 parts of water cooling as a water outlet, 51 parts of water cooling as a water inlet pipe joint, and 52 parts of water cooling as a water outlet pipe joint.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the combustion chamber applied to the entrained-flow gasifier in the first embodiment of the present invention includes a casing 1, a heat insulation layer 2, a burner 3, a slag hole 4, and a combustion chamber 6, wherein a hollow accommodating cavity is provided in the casing 1, the heat insulation layer 2 is provided in the accommodating cavity in the casing 1, the combustion chamber 6 is provided in the heat insulation layer 2, the burner 3 is provided at the top of the casing 1, the burner 3 penetrates through the heat insulation layer 2 and extends into the combustion chamber 6, and the slag hole 4 is provided at the bottom of the combustion chamber 6.
In the above embodiment, it should be noted that the main structures of the outer shell 1 and the thermal insulation layer 2 are preferably cylindrical, and other cross-sectional shapes are not excluded.
The technical effects achieved by the above embodiment are as follows: through the position arrangement mode of the combustion chamber of this embodiment for entrained flow gasifier, reach nozzle and the not direct relative purpose of cinder notch axial to reduce nozzle spun fine coal granule and directly escape from the cinder notch, can show improvement fine coal granule and along with the backmixing entrainment multiplying power of air current in the combustion chamber, improve the entrapment rate of the liquid slag blanket of combustion chamber inner wall to fine coal granule, reduce the carbon residue of lime-ash, improve carbon conversion rate.
Preferably, as shown in fig. 1 to 4, in some embodiments, the insulation layer 2 is a refractory brick structure built within the casing 1; alternatively, the heat insulating layer 2 is a water-cooled membrane wall provided in the casing 1.
In the above preferred embodiment, it should be noted that, besides the above structure of the heat insulation layer 2, the heat insulation layer may be provided according to actual requirements.
The beneficial effects of the preferred embodiment are as follows: the provision of the heat insulating layer 2 according to the present embodiment achieves the effect of maintaining the temperature in the combustion chamber 6.
Preferably, as shown in fig. 1 to 2, in some embodiments, the center line of the burner 3 is offset from the center line of the slag hole 4.
The beneficial effects of the preferred embodiment are as follows: through the arrangement mode, the purpose that the burner 3 is not directly opposite to the slag hole 4 in the axial direction is achieved.
Preferably, as shown in fig. 1, in some embodiments, an included angle is formed between the central line of the burner 3 and the central line of the combustion chamber 6, and the central line of the slag notch 4 is coaxially arranged with the central line of the combustion chamber 6.
In the above preferred embodiment, it should be noted that, for example, the center line of the burner 3 is inclined toward one side or the other side of the casing 1, and the included angle between the two is preferably an acute angle, and in addition, it is not excluded that the inclination angle of the burner 3 is other angles.
Preferably, as shown in fig. 2, in some embodiments, the center line of the burner 3 is arranged coaxially with the center line of the combustion chamber 6, and the center line of the slag hole 4 is arranged eccentrically with respect to the center line of the combustion chamber 6.
Preferably, as shown in fig. 3 to 4, in some embodiments, the burner further comprises a water cooling assembly 5, a central line of the burner 3 is coaxially arranged with a central line of the slag notch 4, and the water cooling assembly 5 is arranged in the combustion chamber 6 and located right above the slag notch 4.
The beneficial effects of the preferred embodiment are as follows: the three positions which are not directly opposite are arranged, so that the pulverized coal particles are effectively reduced from directly escaping from the slag hole 4.
Preferably, as shown in fig. 3 to 4, in some embodiments, the water-cooled assembly 5 includes a water-cooled water inlet pipe connector 51 and a water-cooled water outlet pipe connector 52, the casing 1 of the combustion chamber 6 is provided with a water-cooled water inlet 11 and a water-cooled water outlet 12, the water-cooled water inlet pipe connector 51 penetrates through the heat insulation layer 2 and is connected with the water-cooled water inlet 11, and the water-cooled water outlet pipe connector 52 penetrates through the heat insulation layer 2 and is connected with the water-cooled water outlet 12.
In the above preferred embodiment, it should be noted that the water cooling is performed while the main body portion of the assembly 5 is disposed at the center of the combustion chamber 6.
The beneficial effects of the preferred embodiment are as follows: by providing a water inlet pipe connector 51 to communicate the body portion of the assembly 5 with the water inlet 11, and by providing a water outlet pipe connector 52 to communicate the body portion of the assembly 5 with the water outlet 12.
Preferably, as shown in fig. 3-4, in some embodiments, the water cooled assembly 5 is a conical coil structure welded around by a finned tube; or, the water cooling component 5 is a conical jacket structure welded by steel plates or steel forgings.
The beneficial effects of the preferred embodiment are as follows: through the arrangement, the effect of directly escaping the pulverized coal particles from the slag hole 4 is better reduced.
Preferably, as shown in fig. 3 to 4, in some embodiments, the water cooling module 5 is provided with a through hole in the center thereof.
The beneficial effects of the preferred embodiment are as follows: to avoid ablation of the center flame on the center of the water cooled component 5 and, at the same time, to reduce the impact of the center down stream on the water cooled component 5.
Preferably, as shown in fig. 3 to 4, in some embodiments, the pulverized coal particles and the oxidant are mixed and injected into the combustion chamber 6 through the burner 3 to perform gasification reaction, the reaction temperature is continuously maintained above 1200 ℃, the heat insulation layer 2 is arranged to insulate the high temperature in the combustion chamber 6 so that the working temperature of the housing 1 of the combustion chamber 6 is below the allowable temperature, an upper gas back-mixing zone is formed in the upper area of the combustion chamber 6 through the gas injected downwards at high speed by the burner 3, the central gas flow meets the water cooling component 5 arranged on the upper part of the slag notch 4 during the downward movement process, the flow direction of the gas flow is changed, and meanwhile, the lower gas back-mixing zone is formed by the negative pressure formed by the upward entrainment speed at the bottom of the upper gas back-mixing zone.
In the above preferred embodiment, it should be noted that this embodiment is only one embodiment, and in addition, other specific embodiments may also be adopted.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
Claims (10)
1. The utility model provides a be applied to combustion chamber of entrained flow gasifier, its characterized in that, includes shell (1), insulating layer (2), nozzle (3), cinder notch (4) and combustion chamber (6), be provided with hollow chamber that holds in shell (1), be provided with in the chamber that holds in shell (1) insulating layer (2), be provided with in insulating layer (2) combustion chamber (6), the top of shell (1) is provided with nozzle (3), nozzle (3) pass insulating layer (2) stretch into to in combustion chamber (6), the bottom of combustion chamber (6) is provided with cinder notch (4).
2. A combustion chamber for an entrained-flow gasifier according to claim 1, wherein said insulating layer (2) is a refractory brick structure built in said outer shell (1); or the heat insulation layer (2) is a water-cooling membrane wall arranged in the shell (1).
3. The combustor of the entrained-flow gasifier as claimed in claim 1, wherein the center line of the burner (3) is offset from the center line of the slag hole (4).
4. The combustor of the entrained-flow gasifier as claimed in claim 3, wherein the center line of the burner (3) is at an angle with the center line of the combustor (6), and the center line of the slag hole (4) is coaxial with the center line of the combustor (6).
5. A combustion chamber for an entrained-flow gasifier according to claim 3, wherein the center line of the burner (3) is arranged coaxially with the center line of the combustion chamber (6), and the center line of the slag hole (4) is arranged eccentrically with respect to the center line of the combustion chamber (6).
6. The combustor applied to the entrained-flow gasifier as claimed in claim 1, further comprising a water cooling assembly (5), wherein the center line of the burner (3) is coaxially arranged with the center line of the slag hole (4), and the water cooling assembly (5) is arranged in the combustor (6) and is positioned right above the slag hole (4).
7. The combustor of the entrained-flow gasifier as claimed in claim 6, wherein the water cooling module (5) comprises a water inlet pipe connector (51) and a water outlet pipe connector (52), the housing (1) of the combustor (6) is provided with a water inlet (11) and a water outlet (12), the water inlet pipe connector (51) penetrates through the insulation layer (2) to connect with the water inlet (11), and the water outlet pipe connector (52) penetrates through the insulation layer (2) to connect with the water outlet (12).
8. The combustor of the entrained-flow gasifier as claimed in claim 7, wherein the water cooling assembly (5) is a conical coil structure welded around by a finned tube; or the water cooling component (5) is a conical jacket structure welded by a steel plate or a steel forging.
9. The combustor of an entrained-flow gasifier as claimed in claim 8, wherein said water cooling block (5) is provided with a through hole at its center.
10. The combustor of the entrained-flow gasifier as claimed in claim 9, wherein pulverized coal particles and oxidant are injected into the combustor (6) through the burner (3) in a mixed manner to generate gasification reaction, the reaction temperature is continuously maintained above 1200 ℃, the thermal insulation layer (2) is arranged to insulate the high temperature in the combustor (6) so that the working temperature of the casing (1) of the combustor (6) is below the allowable temperature, an upper gas back-mixing zone is formed in the upper region of the combustor (6) through the gas injected downwards at high speed from the burner (3), the central gas flow meets the water-cooled component (5) arranged above the slag notch (4) during the downward movement, the flow direction of the gas flow is changed, and meanwhile, the negative pressure is formed by the upward entrainment speed at the bottom of the upper gas back-mixing zone, a lower gas back-mixing zone is formed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110013323.4A CN112779059B (en) | 2021-01-06 | 2021-01-06 | Combustion chamber applied to entrained flow gasifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110013323.4A CN112779059B (en) | 2021-01-06 | 2021-01-06 | Combustion chamber applied to entrained flow gasifier |
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| CN112779059A true CN112779059A (en) | 2021-05-11 |
| CN112779059B CN112779059B (en) | 2021-09-24 |
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| CN112779059B (en) | 2021-09-24 |
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