CN210176800U - Gasification furnace for pulverized coal gasification coupling double-tube-screen radiation waste boiler - Google Patents
Gasification furnace for pulverized coal gasification coupling double-tube-screen radiation waste boiler Download PDFInfo
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- CN210176800U CN210176800U CN201921099306.1U CN201921099306U CN210176800U CN 210176800 U CN210176800 U CN 210176800U CN 201921099306 U CN201921099306 U CN 201921099306U CN 210176800 U CN210176800 U CN 210176800U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model discloses a gasification furnace of a pulverized coal gasification coupling double-tube screen radiation waste boiler, which belongs to the technical field of coal gasification, and comprises a combustion chamber, a radiation waste boiler and a chilling chamber which are mutually connected from top to bottom, wherein the side wall of the middle upper part of the combustion chamber is provided with a plurality of horizontally and uniformly distributed burners, and a water-cooled wall is arranged in the shell of the combustion chamber; the combustion chamber is connected with the radiation waste boiler through a steady flow injection section; the radiation waste boiler is provided with a first membrane water-cooling wall and a second membrane water-cooling wall, and the first membrane water-cooling wall is in a double-tube screen type at the inner side and the outer side; the chilling chamber is internally provided with a chilling ring, a down pipe and a foam breaking slag remover. The utility model solves the problems of large size, high investment cost and easy slag blockage of the existing radiation waste boiler, and is suitable for the industrial application in the industries and fields of IGCC, industrial gas, oxo synthesis, chemical fertilizer and the like.
Description
Technical Field
The utility model relates to a coal gasification technical field, in particular to gasifier of double-barrelled screen radiation waste boiler of fine coal gasification coupling.
Background
The domestic and foreign coal gasification technologies are more, and include Shell gasification technology, GSP gasification technology, space furnace gasification technology, four-nozzle gasification technology, GE gasification technology and the like. The technologies all adopt an entrained flow gasifier, but the feeding mode and the heat recovery method of the synthesis gas are different. The feeding mode comprises pulverized coal feeding and coal water slurry feeding from a raw material phase state, and comprises single burner overhead, multiple burner opposite and multiple burner rotational flow from a feeding burner type; the synthesis gas heat recovery mode comprises a cooling water full chilling mode, a gas chilling mode, a radiation waste pot recovery mode or a combination of multiple modes. The mode of recovering heat by adopting the combination of pulverized coal feeding and radiation waste boiler water chilling has obvious advantages in the aspects of gasification efficiency, heat recovery effect and improvement of the quality of synthesis gas products.
The chinese utility model patent (publication No. CN204434565U) discloses a gasification furnace with radiation waste pan, but the utility model has the following disadvantages: the radiation waste boiler comprises a circumferential membrane water-cooling wall and a toothed knife-shaped membrane water-cooling wall positioned in the circumferential membrane water-cooling wall, a synthesis gas channel is not arranged outside the circumferential membrane water-cooling wall, only one side of the water-cooling wall is heated, the heat exchange area is small, the radiation waste boiler required for recovering the same heat is large in size, and the investment cost is high; the circumferential membrane type water-cooled wall adopts a polygonal type, so that the processing, manufacturing, detecting and maintaining difficulty is high; the inner side of the serrated knife-shaped membrane type water-cooled wall is densely distributed, so that slag blockage is easily caused.
SUMMERY OF THE UTILITY MODEL
1. The to-be-solved technical problem of the utility model
The utility model provides a gasification furnace of a pulverized coal gasification coupling double-tube screen radiation waste boiler, which solves the problems of huge size, high investment cost and easy slag blockage of the existing radiation waste boiler.
2. Technical scheme
In order to solve the technical problem, the utility model provides a technical scheme does:
a gasification furnace for a pulverized coal gasification coupling double-tube screen radiation waste boiler comprises a combustion chamber, the radiation waste boiler and a chilling chamber which are mutually connected from top to bottom, wherein the side wall of the middle upper part of the combustion chamber is provided with a plurality of horizontally and uniformly distributed burners, and a water-cooled wall is arranged in a shell of the combustion chamber; the combustion chamber is connected with the radiation waste boiler through a steady flow injection section; the radiation waste boiler is provided with a first membrane water-cooling wall and a second membrane water-cooling wall, and the first membrane water-cooling wall is in a double-tube screen type at the inner side and the outer side; the chilling chamber is internally provided with a chilling ring, a down pipe and a foam breaking slag remover.
Preferably, the number of the burners is 3, the burners are arranged at the height from the top 1/3 of the combustion chamber, and the horizontal installation angles of the burners deviate from the radial angle β in the same direction by 2-6 degrees.
Wherein the jet angle α of the stationary flow injection section is preferably between 25 ° and 45 °.
Preferably, the first membrane water-cooling wall is in a cylindrical type with double tube panels at the inner side and the outer side, 4-30 groups of tube panels at the inner side of the first membrane water-cooling wall are uniformly distributed at the inner side, and 4-30 groups of tube panels at the outer side of the first membrane water-cooling wall are uniformly distributed at the outer side.
Wherein, preferably, the cylinder diameter ratio of the first membrane water wall to the second membrane water wall is 1: 1.2-1:1.6.
Preferably, a synthetic gas outlet is formed in the side wall of the top of the chilling chamber, a slag discharge port is formed in the bottom of the chilling chamber, and the foam breaking slag remover is located below the liquid level in the chilling chamber.
3. Advantageous effects
The technical scheme provided by the utility model, compared with prior art, following beneficial effect has:
(1) the utility model provides a double-barrelled screen radiation waste boiler's of fine coal gasification coupling gasifier, raw materials pulverized coal and gasification agent are sprayed through the nozzle that the syntropy skew was arranged and are got into the combustion chamber, form the eddy current flow field, and the combustion chamber water-cooled wall hangs sediment effectual, and the atomizing effect of raw materials and gasification agent is good, and the reaction is more abundant, has improved the carbon conversion rate of raw materials to a certain extent, has improved the gasification performance of gasifier;
(2) the utility model provides a double-barrelled screen radiation waste boiler's of fine coal gasification coupling gasifier, radiation waste boiler first membrane wall drum inboard and outside all are equipped with perpendicular tube panel, and first membrane wall both sides are heated, and under the condition of retrieving same heat, the required radiation waste boiler size is little, has greatly reduced the investment cost of radiation waste boiler;
(3) the utility model provides a gasification furnace of a pulverized coal gasification coupling double-tube panel radiation waste boiler, the arrangement of the inner side and the outer side tube panels of the first membrane type water-cooled wall of the double-tube panel radiation waste boiler is relatively sparse, the synthetic gas circulation channel is large, and the problem of easy slag blockage caused by the intensive arrangement of the tube panels of the existing radiation waste boiler is solved;
(4) the utility model provides a gasification furnace of double-barrelled screen radiation waste boiler of fine coal gasification coupling, through designing suitable stationary flow injection section efflux angle α to and the drum diameter ratio (d 1: d2) of suitable first membrane water-cooling wall and second membrane water-cooling wall, make the synthetic gas flow field that flows through the first membrane water-cooling wall inboard and outside even not bias flow, the synthetic gas flow field is more reasonable, the radiation heat transfer effect of radiation waste boiler has been strengthened, make radiation waste boiler structure compacter, the investment cost of further reducing radiation waste boiler;
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 is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a gasification furnace of a pulverized coal gasification coupling double-tube panel radiation waste boiler of the present invention;
FIG. 2 is a schematic cross-sectional view of a double-screen radiant fryer;
FIG. 3 is a schematic view of burner installation.
In the figure, 100 parts of a combustion chamber, 101 parts of a burner, 102 parts of a water wall, 103 parts of a steady flow injection section, 104 parts of a jet angle α, 105 parts of a burner installation angle β, 200 parts of a radiation waste boiler, 201 parts of a first membrane water wall, 202 parts of a second membrane water wall, 203 parts of a first membrane water wall outer tube panel, 204 parts of a first membrane water wall inner tube panel, 300 parts of a chilling chamber, 301 parts of a chilling ring, 302 parts of a down pipe, 303 parts of a bubble breaking slag remover, 304 parts of a synthetic gas outlet, 305 parts of a slag discharge port
Detailed Description
The technical solution of the present invention will be described clearly and completely below with reference to specific embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a gasification furnace for a pulverized coal gasification coupling double-tube-panel radiation waste boiler 200, which includes a combustion chamber 100, the radiation waste boiler 200 and a chilling chamber 300 that are connected with each other from top to bottom, wherein a plurality of horizontally and uniformly distributed burners 101 are arranged on the side wall of the upper middle part of the combustion chamber 100, and a water-cooled wall 102 is arranged in the casing of the combustion chamber 100; the combustion chamber 100 is connected with the radiation waste boiler 200 through a steady flow injection section 103; the radiation waste boiler 200 is provided with a first membrane water-cooling wall 201 and a second membrane water-cooling wall 202, wherein the first membrane water-cooling wall 201 is in a double-tube screen type at the inner side and the outer side; quench chamber 300 is provided with quench ring 301, downcomer 302, and bubble breaker 303.
Wherein, the quantity of nozzle 101 is 3, nozzle 101 sets up in the high department of 1/3 apart from 100 tops of combustion chamber, nozzle 101 horizontal installation angle homogeneous deviation radial angle is at 4, nozzle installation angle β 105 is 4 promptly, raw materials fine coal and gasification agent spray the entering combustion chamber 100 through the nozzle 101 that the homogeneous deviation was arranged, form the eddy current flow field, the water-cooling wall hangs the sediment effectual, the atomizing effect of raw materials and gasification agent is good, the reaction is more abundant, the carbon conversion rate of raw materials has been improved to a certain extent, the gasification performance of gasifier has been improved.
Wherein the jet angle α of the stationary flow injection segment 103 is at 30 °.
The first membrane water-cooling wall 201 is in a cylinder type with double tube panels on the inner side and the outer side, 12 groups of tube panels 203 on the inner side of the first membrane water-cooling wall are uniformly distributed on the inner side, and 12 groups of tube panels 204 on the outer side of the first membrane water-cooling wall are uniformly distributed on the outer side. The first membrane water-cooled wall 201 is heated on two sides, and under the condition of recovering the same heat, the size of the required radiation waste boiler 200 is small, so that the investment cost of the radiation waste boiler 200 is greatly reduced. In addition, the tube panels on the inner side and the outer side of the first membrane type water-cooled wall 201 of the tube panel radiation waste boiler 200 are relatively sparsely arranged, a synthetic gas circulation channel is large, and the problem that slag is easily blocked due to the intensive arrangement of the tube panels of the existing radiation waste boiler 200 is solved.
Wherein the ratio of the cylinder diameters of first membrane water wall 201 and second membrane water wall 202 is 1: 1.4. the synthetic gas flow field flowing through the inner side and the outer side of the first membrane type water-cooled wall 201 is uniform and does not flow in a bias mode, the synthetic gas flow field is more reasonable, the radiation heat transfer effect of the radiation waste boiler 200 is enhanced, the structure of the radiation waste boiler 200 is more compact, and the investment cost of the radiation waste boiler 200 is further reduced.
Wherein, the side wall of the top of the chilling chamber 300 is provided with a synthetic gas outlet 304, the bottom of the chilling chamber 300 is provided with a slag discharge port 305, and the foam breaking slag remover 303 is positioned below the liquid level in the chilling chamber 300.
In the embodiment, the gasification method of the pulverized coal gasification coupling double-tube-screen radiation waste boiler 200 is adopted: the method comprises the following steps:
grinding and drying raw material coal to obtain pulverized coal particles with the particle size of less than 100 micrometers and the water content of 1-4%, injecting the pulverized coal particles and a gasifying agent (oxygen with the purity of 99.6%) into a gasification furnace combustion chamber 100 through 3 burners 101, forming a vortex flow field in the combustion chamber 100, and carrying out gasification reaction at the reaction temperature of 1400 ℃ and the reaction pressure of 4.0 MPa.
The 1400 ℃ high-temperature synthesis gas generated by gasification reaction carries liquid slag to flow downwards through the steady flow injection section 103 to enter the radiation waste boiler 200, and simultaneously flows through the inner side tube panel and the outer side tube panel of the first membrane type water wall 201, high-level heat carried by the synthesis gas and the liquid slag is absorbed by boiler water in the water tube of the radiation waste boiler 200 to generate a byproduct of 5MPa saturated steam, the synthesis gas is cooled to 700 ℃, the liquid slag is cooled and solidified into solid ash slag, and the solid ash slag downwards enters the chilling chamber 300 through the downcomer 302;
chilling water sprayed by a chilling ring 301 at the top of the descending pipe 302 forms a cooling water film on the inner wall of the descending pipe 302 to further cool the synthesis gas and the solid ash; the ash slag carried by the synthetic gas is guided to enter the lower part of the liquid level at the bottom of the chilling chamber 300 through a descending pipe 302, the synthetic gas overflows upwards after being saturated by water vapor, water bubbles carried in the synthetic gas are broken through a bubble breaking slag remover 303, the ash slag flowing back is removed, the synthetic gas is sent out from a synthetic gas outlet 304, and solid ash slag falls into the bottom of the chilling chamber 300 and is discharged through a slag discharge port 305.
In the embodiment, the installation angle of the burner 101 deviates from the radial angle β in the same direction by 4 degrees, the installation height of the burner 101 is at a position 1/3 away from the top tangent line of the combustion chamber 100, the jet angle α 104 of the steady flow injection section 103 is 30 degrees, the cylinder diameter ratio (d 1: d2) of the first membrane water wall 201 to the second membrane water wall 202 is 1:1.41, 12 groups of vertical tube panels are uniformly distributed on the inner side of the first membrane water wall 201 along the circumference, and 12 groups of vertical tube panels are uniformly distributed on the outer side of the first membrane water wall along the circumference.
The feed rate of the raw material coal in this example was 2000t/d, and the following are the analytical data of the raw material coal used in this example:
the following are the syngas data and the main gasification performance indicators sent out by the syngas outlet 304 of this example:
the synthesis gas produced in the embodiment has high quality, and can be used as raw material gas in the industries of IGCC (integrated gasification combined cycle), industrial gas, oxo synthesis, chemical fertilizers and the like after being processed in subsequent working sections.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a gasifier of double-barrelled screen radiation waste pan of fine coal gasification coupling, includes top-down interconnect's combustion chamber, radiation waste pan and chilling chamber, its characterized in that: the side wall of the middle upper part of the combustion chamber is provided with a plurality of horizontally and uniformly distributed burners, and a water-cooled wall is arranged in a shell of the combustion chamber; the combustion chamber is connected with the radiation waste boiler through a steady flow injection section; the radiation waste boiler is provided with a first membrane water-cooling wall and a second membrane water-cooling wall, and the first membrane water-cooling wall is in a double-tube screen type at the inner side and the outer side; the chilling chamber is internally provided with a chilling ring, a down pipe and a foam breaking slag remover.
2. The gasification furnace of the pulverized coal gasification coupling double-tube-shield radiation waste boiler as claimed in claim 1, wherein the number of the burners is 3, the burners are arranged at the height of 1/3 degrees from the top of the combustion chamber, and the horizontal installation angles of the burners deviate from a radial angle β in the same direction by 2 degrees to 6 degrees.
3. The gasification furnace of the pulverized coal gasification coupling double-tube-shield radiation waste boiler as claimed in claim 1, wherein the jet angle α of the steady flow injection section is 25-45 °.
4. The gasification furnace of the pulverized coal gasification coupling double-tube-screen radiation waste boiler according to claim 1, characterized in that: the first membrane water-cooling wall is in a cylindrical type with double tube panels at the inner side and the outer side, 4-30 groups of tube panels at the inner side of the first membrane water-cooling wall are uniformly distributed at the inner side, and 4-30 groups of tube panels at the outer side of the first membrane water-cooling wall are uniformly distributed at the outer side.
5. The gasification furnace of the pulverized coal gasification coupling double-tube-screen radiation waste boiler according to claim 1, characterized in that: the diameter ratio of the cylinder of the first membrane water-cooling wall to the cylinder of the second membrane water-cooling wall is 1: 1.2-1:1.6.
6. The gasification furnace of the pulverized coal gasification coupling double-tube-screen radiation waste boiler according to claim 1, characterized in that: the side wall at the top of the chilling chamber is provided with a synthetic gas outlet, the bottom of the chilling chamber is provided with a slag discharge port, and the foam breaking slag remover is positioned below the liquid level in the chilling chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921099306.1U CN210176800U (en) | 2019-07-12 | 2019-07-12 | Gasification furnace for pulverized coal gasification coupling double-tube-screen radiation waste boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921099306.1U CN210176800U (en) | 2019-07-12 | 2019-07-12 | Gasification furnace for pulverized coal gasification coupling double-tube-screen radiation waste boiler |
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| CN210176800U true CN210176800U (en) | 2020-03-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194971A (en) * | 2019-07-12 | 2019-09-03 | 陕西德信祥能源科技有限公司 | A kind of coal gasification couples the gasification furnace and gasification process of two-tube screen radiation waste pot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194971A (en) * | 2019-07-12 | 2019-09-03 | 陕西德信祥能源科技有限公司 | A kind of coal gasification couples the gasification furnace and gasification process of two-tube screen radiation waste pot |
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