CN212128077U - Combined type gasification furnace plug structure for four-nozzle coal water slurry gasification furnace - Google Patents
Combined type gasification furnace plug structure for four-nozzle coal water slurry gasification furnace Download PDFInfo
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- CN212128077U CN212128077U CN202020200047.3U CN202020200047U CN212128077U CN 212128077 U CN212128077 U CN 212128077U CN 202020200047 U CN202020200047 U CN 202020200047U CN 212128077 U CN212128077 U CN 212128077U
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Abstract
The utility model relates to a coal water slurry gasifier structure provides a four nozzle coal water slurry gasifiers is with combination formula gasifier end cap structure. The plug structure of the combined gasification furnace for the four-nozzle coal water slurry gasification furnace is provided with an inner plug, wherein the inner plug is provided with a truncated cone body which is gradually expanded from bottom to top, and the top of the truncated cone body is provided with a truncated cone body with the diameter larger than the maximum diameter of the truncated cone body; an outer plug used for resisting a high-temperature medium is arranged corresponding to the inner plug; the outer plug is provided with a hollow conical frustum body matched with the conical frustum body of the inner plug, and the upper end face of the hollow conical frustum body is provided with an annular boss protruding outwards; the inner plug is embedded into the outer plug; refractory fibers are filled between the outer wall surface of the frustum cone and the inner wall surface of the hollow frustum cone and between the bottom surface of the frustum cone and the bottom surface of the hollow frustum cone. The utility model provides a be difficult to the problem of destruction when the end cap brick can't be extracted to show the use cost who has reduced the end cap brick under the condition that the end cap destroys.
Description
Technical Field
The utility model relates to a coal slurry gasifier structure, concretely relates to four nozzle coal slurry gasifiers are with combination formula gasifier end cap structure, make it can quick replacement under high temperature.
Background
The four-nozzle opposed type coal water slurry pressurized gasification technology is a technology with independent intellectual property rights in China, can be widely applied to coal chemical industries such as synthetic ammonia, coal-to-methanol and the like, and has a large amount of applications in China; a furnace mouth is reserved at the furnace top of the four-nozzle opposed coal water slurry pressurized gasifier for the preheating burner, the preheating burner needs to be plugged and sealed by a plug after being preheated, and the plug needs to be pulled out when the gasifier is shut down so as to facilitate the preheating of the preheating burner during maintenance and reuse. Based on the working condition and the size of the four-nozzle opposed coal water slurry gasification furnace, the current plug is made of a high-chromium refractory material, the volume is large, and the weight of a single plug is generally 80-120 kg; at present, a furnace mouth is mainly a high-chromium prefabricated part, and in order to facilitate installation and extraction of a plug in the use process, a heat-resistant steel structure and an external hoisting handle are reserved in the high-chromium prefabricated part in the preparation process.
The most problems of the plugs are difficult to pull out due to the bonding and reaction of slag in the using process, aiming at the problems, the plug structure is subjected to a series of optimization and improvement, through repeated pulling statistics, when the furnace temperature is reduced to be below 500 ℃ after the current gasification furnace is stopped, the probability of pulling out the plugs is high, but when the gasification furnace is stopped for a short time (the gasification furnace is stopped for about 10 hours and then continuously fed for use), the temperature of the gasification furnace is high, and due to the integral thermal expansion and cold contraction of the plug bricks, the feeding time is often delayed due to the fact that the plugs cannot be pulled out; when the plug is difficult to extract, the plug can be broken only by knocking, and due to the fact that the plug is high in strength and large in size, a great deal of time is consumed in the breaking process, and the risk of damaging the vault firebrick exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a four nozzle coal slurry are combination formula gasifier end cap structure for gasifier makes it can guarantee the safety in production, conveniently extracts simultaneously, even when unable when extracting under high temperature, also easily destroys, can not influence the furnace roof brick life-span.
The utility model adopts the following technical scheme for accomplishing the above purpose:
a combined gasification furnace plug structure for a four-nozzle coal water slurry gasification furnace is provided with an inner plug, wherein the inner plug is provided with a truncated cone body gradually expanding diameter from bottom to top, and the top of the truncated cone body is provided with a truncated cone body with the diameter larger than the maximum diameter of the truncated cone body; a heat-resistant steel piece convenient for hoisting the plug is prefabricated in the inner plug; the upper part of the prefabricated steel part protrudes out of the inner plug; an outer plug used for resisting a high-temperature medium is arranged corresponding to the inner plug; the outer plug is provided with a hollow conical frustum body matched with the conical frustum body of the inner plug, and the upper end surface of the hollow conical frustum body of the outer plug is provided with an annular boss protruding outwards; the annular boss forms a supporting table for supporting and connecting the circular table body of the inner plug; the inner plug is embedded into the outer plug and is connected with the annular boss into a whole through the circular truncated cone; gaps for filling refractory fibers are arranged between the outer wall surface of the cone frustum body of the inner plug and the inner wall surface of the hollow cone frustum body of the outer plug and between the bottom surface of the cone frustum body and the bottom surface of the hollow cone frustum body of the outer plug.
The annular boss of the outer plug is provided with heat-resistant screws which are uniformly distributed along the circumference, and the upper parts of the heat-resistant screws protrude out of the outer plug; the inner plug is provided with a connecting through hole for the heat-resistant screw to pass through; the heat-resistant screws are screwed by nuts after penetrating through the corresponding connecting through holes.
The outside of the outer plug is wrapped with refractory fiber at the contact part with the furnace mouth so as to buffer the expansion of the outer plug at high temperature.
The utility model provides a combined gasification furnace plug structure for a four-nozzle coal water slurry gasification furnace, which realizes the uniform installation and disassembly of an inner plug and an outer plug through bolt connection and is convenient to replace; the plug consists of an inner plug and an outer plug, the outer plug is directly contacted with a high-temperature medium in the gasification furnace when in use, and even if the outer plug has problems in the use process, the inner plug still protects the furnace cover, so that the plug structure meets the requirement of safe production; the inner plug is protected by the outer plug and cannot be contacted with high-temperature slag, a large gap is formed between the inner plug and the outer plug, when the gasifier is suddenly stopped (at a high temperature) or normally stopped and the inner plug and the outer plug cannot be pulled out together, the connecting bolt can be removed, the inner plug is pulled out independently, the outer plug is more easily pulled out due to small weight after the inner plug is pulled out, and the outer plug is very easy to damage due to thin thickness even if the outer plug is bonded with the slag and cannot be pulled out due to reaction, and refractory bricks at the furnace top part cannot be influenced due to operation of damaging the plug; the refractory fiber between the inner plug and the outer plug can reduce the temperature of the inner plug, so that a heat-resistant steel piece in the inner plug is effectively protected, and meanwhile, after the outer plug is damaged, the inner plug can still be used continuously, so that the use cost of the plug is reduced; to sum up, the utility model discloses a with the method of inside and outside choke plug separation, when guaranteeing safety in production and change convenient, be difficult to the problem of destruction when having solved the choke plug brick and can't extracting to show the use cost who has reduced the choke plug brick under the condition that the choke plug destroys.
Drawings
Fig. 1 is a schematic longitudinal sectional view of an outer plug.
Fig. 2 is a top view of the outer plug.
Fig. 3 is a schematic longitudinal sectional view of the inner plug.
Fig. 4 is a top view of the inner plug.
Fig. 5 is a schematic longitudinal sectional view of the plug of the present invention.
In the figure: 1. the plug comprises an inner plug, 2 an outer plug, 3 refractory fibers, 4 heat-resistant screws and 5 heat-resistant steel parts.
Detailed Description
The invention is described with reference to the accompanying drawings and specific embodiments;
as shown in fig. 5, the combined gasification furnace plug structure for the four-nozzle coal water slurry gasification furnace is provided with an inner plug 1 poured by high-chromium or low-chromium materials, and with reference to fig. 1 and 2, the inner plug 1 is provided with a truncated cone body gradually expanding diameter from bottom to top, and the top of the truncated cone body is provided with a truncated cone body with a diameter larger than the maximum diameter of the truncated cone body; a heat-resistant steel piece 5 convenient for hoisting the plug is prefabricated in the inner plug 1; 3-5 burnout cylinders are reserved in the circumferential direction of the circular table at the upper part of the inner plug during pouring, and 3-5 through circular holes are formed after heat treatment; the upper part of the prefabricated steel part 5 protrudes out of the inner plug 1; a high-chromium outer plug 2 for resisting a high-temperature medium is arranged corresponding to the inner plug 1, and the high-chromium outer plug is combined with the figures 3 and 4; the outer plug 2 is provided with a hollow conical frustum body matched with the conical frustum body of the inner plug 1, and the upper end face of the hollow conical frustum body of the outer plug is provided with an annular boss protruding outwards; the annular boss forms a supporting table for supporting and connecting the circular table body of the inner plug; 3-5 screws reserved in the circumferential direction are arranged on the annular boss, the positions of the screws are consistent with the inner plug round hole, and the diameter of each screw is smaller than that of the inner plug round hole; the inner plug is embedded into the outer plug and is connected with the annular boss into a whole through the circular truncated cone; gaps for filling refractory fibers 3 are formed between the outer wall surface of the cone frustum body of the inner plug and the inner wall surface of the hollow cone frustum body of the outer plug and between the bottom surface of the cone frustum body and the bottom surface of the hollow cone frustum body of the outer plug.
The annular boss of the outer plug is provided with heat-resistant screws 4 which are uniformly distributed along the circumference, and the upper parts of the heat-resistant screws 4 protrude out of the outer plug; the inner plug is provided with a connecting through hole for the heat-resistant screw to pass through; the heat-resistant screws are screwed by nuts after penetrating through the corresponding connecting through holes.
The outside of the outer plug is wrapped with refractory fiber at the contact part with the furnace mouth so as to buffer the expansion of the outer plug at high temperature.
As shown in fig. 4; when in use, the inner and outer plugs are connected into a whole by screws, which is convenient for hoisting, as shown in figure 5, a certain gap is left between the inner and outer plugs, and the inside is filled with refractory fiber; after the screw cap is taken off, the plug is divided into an inner part and an outer part by a whole, and the two parts can be independently installed and detached.
Claims (2)
1. The utility model provides a four nozzle coal slurry are combination formula gasifier end cap structure for gasifier which characterized in that: the combined gasification furnace plug structure is provided with an inner plug, the inner plug is provided with a truncated cone body which is gradually expanded from bottom to top, and the top of the truncated cone body is provided with a truncated cone body with the diameter larger than the maximum diameter of the truncated cone body; a heat-resistant steel piece convenient for hoisting the plug is prefabricated in the inner plug; the upper part of the heat-resistant steel piece protrudes out of the inner plug; an outer plug used for resisting a high-temperature medium is arranged corresponding to the inner plug; the outer plug is provided with a hollow conical frustum body matched with the conical frustum body of the inner plug, and the upper end surface of the hollow conical frustum body of the outer plug is provided with an annular boss protruding outwards; the annular boss forms a supporting table for supporting and connecting the circular table body of the inner plug; the inner plug is embedded into the outer plug and is connected with the annular boss into a whole through the circular truncated cone; gaps for filling refractory fibers are arranged between the outer wall surface of the cone frustum body of the inner plug and the inner wall surface of the hollow cone frustum body of the outer plug and between the bottom surface of the cone frustum body and the bottom surface of the hollow cone frustum body of the outer plug.
2. The plug structure of the combined gasification furnace for the four-nozzle coal-water slurry gasification furnace according to claim 1, characterized in that: the annular boss of the outer plug is provided with heat-resistant screws which are uniformly distributed along the circumference, and the upper parts of the heat-resistant screws protrude out of the outer plug; the inner plug is provided with a connecting through hole for the heat-resistant screw to pass through; the heat-resistant screws are screwed by nuts after penetrating through the corresponding connecting through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020200047.3U CN212128077U (en) | 2020-02-24 | 2020-02-24 | Combined type gasification furnace plug structure for four-nozzle coal water slurry gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020200047.3U CN212128077U (en) | 2020-02-24 | 2020-02-24 | Combined type gasification furnace plug structure for four-nozzle coal water slurry gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212128077U true CN212128077U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020200047.3U Active CN212128077U (en) | 2020-02-24 | 2020-02-24 | Combined type gasification furnace plug structure for four-nozzle coal water slurry gasification furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212128077U (en) |
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2020
- 2020-02-24 CN CN202020200047.3U patent/CN212128077U/en active Active
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