CN216113380U

CN216113380U - Soft sealing device for tail gas recovery of silicon carbide smelting furnace

Info

Publication number: CN216113380U
Application number: CN202121166649.2U
Authority: CN
Inventors: 张海波; 强树洪
Original assignee: Pingluo Binhe Sic Co ltd
Current assignee: Pingluo Binhe Sic Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-03-22
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses a tail gas recovery soft sealing device of a silicon carbide smelting furnace, and relates to the technical field of metallurgy. The gas collection tank comprises a first gas collection tank and a second gas collection tank, wherein a gas inlet guide pipe is arranged at one end of the first gas collection tank and one end of the second gas collection tank in a penetrating manner, a gas outlet guide pipe is arranged at the other end of the first gas collection tank and the other end of the second gas collection tank in a penetrating manner, a buffer pipe is fixedly connected at the outer end of the gas inlet guide pipe, an end cover is fixedly connected at the outer end of the buffer pipe, the first gas collection tank and the second gas collection tank are arranged in an equidistant groove shape at the peripheral sides, a circulating water pipe is arranged in a groove-shaped area arranged at the peripheral sides of the first gas collection tank and the second gas collection tank, a vertical pipe is respectively connected at the upper end of the circulating water pipe in a penetrating manner, and a water inlet pipe and a water outlet pipe are connected at the upper end of the vertical pipe. According to the utility model, the first gas collecting tank and the second gas collecting tank are arranged to absorb tail gas, and the circulating water pipe absorbs heat emitted by the tail gas, so that the continuous operation of tail gas collection is ensured, the temperature of the tail gas is rapidly reduced, and the storage capacity of the tail gas is improved.

Description

Soft sealing device for tail gas recovery of silicon carbide smelting furnace

Technical Field

The utility model belongs to the technical field of metallurgy, and particularly relates to a tail gas recovery soft sealing device for a silicon carbide smelting furnace.

Background

The silicon carbide, also called carborundum, is prepared by smelting quartz sand, petroleum coke (or coal coke), wood chips (salt is required when producing green silicon carbide) and other raw materials in a resistance furnace at high temperature. Silicon carbide is also called carbo-silica, in the non-oxide high-technology refractory raw materials such as current C, N, B and the like, the silicon carbide is one of the most widely applied and most economical, can be called as corundum or refractory sand, has excellent heat conduction performance, is a semiconductor, can resist oxidation at high temperature, has a series of excellent performances such as high-temperature thermal stability, high heat conductivity, acid-base corrosion resistance, low expansion coefficient, good thermal shock resistance and the like, is widely applied to a plurality of fields such as industrial grinding tools, refractory materials, steel smelting, war industry and aerospace and the like, is used for steel mills as deoxidizing agents in a large amount, is completely used for producing silicon carbide in China by adopting a rectangular straight silicon carbide smelting furnace, is smelted in the open air, discharges air due to combustion of tail gas, wastes energy and causes great pollution to the air. Therefore, the tail gas recovery device is required to be equipped for the silicon carbide smelting furnace, but the following disadvantages still exist in the practical use:

1. when the existing tail gas recovery device breaks down, the tail gas recovery operation needs to be stopped, and then the device is checked, so that the recovery operation cannot be continuously carried out, and the operation efficiency is reduced;

2. a large amount of heat that contains in the current tail gas makes the gas expansion, occupies great volume, leads to the internal storage volume of jar less.

Therefore, the existing tail gas recovery device for silicon carbide smelting furnace can not meet the requirement in practical use, so that the market urgently needs improved technology to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a silicon carbide smelting furnace tail gas recovery soft sealing device, which solves the problems that the existing silicon carbide smelting furnace tail gas recovery device cannot continuously operate due to faults and cannot reach the standard storage capacity under the influence of tail gas temperature by arranging a first gas collecting tank and a second gas collecting tank to absorb tail gas and simultaneously absorbing heat emitted by the tail gas by a circulating water pipe.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a tail gas recovery soft sealing device for a silicon carbide smelting furnace, which comprises a first gas collecting tank and a second gas collecting tank, wherein an air inlet guide pipe is arranged at one end of the first gas collecting tank and one end of the second gas collecting tank in a penetrating way, an air outlet guide pipe is arranged at the other end of the first gas collecting tank and the other end of the second gas collecting tank in a penetrating way, the peripheral sides of the first gas collecting tank and the second gas collecting tank are arranged in an equidistant groove shape, a circulating water pipe is arranged in a groove-shaped area arranged at the peripheral sides of the first gas collecting tank and the second gas collecting tank, the upper end port of the circulating water pipe is respectively connected with a vertical pipe in a penetrating way, and the upper end of the vertical pipe is connected with a water inlet pipe and a water outlet pipe in a penetrating way.

Furthermore, the inlet duct all contradicts with the outlet duct downside and is provided with the extension board, and the extension board is provided with two sets ofly, the extension board is the sloping platform form and sets up, and the extension board is through fixing a gas collection tank and No. two gas collection tanks and not taking place the offset to inlet duct and outlet duct's support.

Further, the inlet duct outer end fixedly connected with buffer tube, and buffer tube outer end fixedly connected with end cover regularly lift the end cover off, clear up the buffer tube is inside, and the volume of guaranteeing that the particulate matter in the tail gas is accumulated to collect in the buffer tube is less.

Further, the buffer tube outside runs through and is provided with the gas-supply pipe, and the gas-supply pipe is close to the outside fixedly connected with slot type soft sealing gate valve of one end of buffer tube, and the state that opens and shuts of slot type soft sealing gate valve decision gas-supply pipe, tail gas in the gas-supply pipe becomes more gentle when getting into inside the buffer tube.

Furthermore, the one end through connection that the buffer tube was kept away from to the gas-supply pipe has the breathing pipe, and the breathing pipe is the setting that link up with external getter device, and external getter device absorbs tail gas to the breathing pipe, inputs to inside the gas-supply pipe from the breathing pipe afterwards.

Furthermore, the central positions of the upper parts of the ends, close to the air inlet guide pipe, of the first air collecting tank and the second air collecting tank are fixedly connected with barometers, the operation ends of the barometers are arranged inside the first air collecting tank and the second air collecting tank, and the barometers feed back the air pressure inside the first air collecting tank and the second air collecting tank in time so that a worker can determine whether the first air collecting tank or the second air collecting tank needs pressure relief.

Furthermore, the central position of the lower part of one end of the first gas collecting tank and the second gas collecting tank, which are close to the air inlet guide pipe, is provided with a blow-off pipe in a penetrating manner, the outer side of the lower end of the blow-off pipe is in threaded connection with a pipe cover, the blow-off pipe is used for cleaning internal stains of the first gas collecting tank or the second gas collecting tank, and the pipeline ensures that external impurities do not enter the first gas collecting tank or the second gas collecting tank through the blow-off pipe while ensuring that the first gas collecting tank and the second gas collecting tank do not leak air during working.

The utility model has the following beneficial effects:

1. the utility model has the effect of ensuring the continuous operation of tail gas collection by arranging the first gas collection tank and the second gas collection tank, solves the problems that the tail gas recovery operation needs to be stopped when the traditional tail gas recovery device fails, then the device is checked, the recovery operation cannot be continuously carried out, and the operation efficiency is reduced, the first gas collection tank and the second gas collection tank simultaneously collect tail gas in the initial state, but when one of the first gas collection tank or the second gas collection tank fails or needs maintenance, the groove type soft sealing gate valve arranged corresponding to the gas pipe is closed, the tail gas cannot enter the tank body, if the first gas collection tank fails or needs maintenance, the groove type soft sealing gate valve arranged outside the gas pipe correspondingly arranged to the first gas collection tank is closed, the tail gas cannot enter the first gas outlet pipe, that is, the tail gas all enters into the inside of No. two gas collection tanks, and this setting is used for continuously collecting the tail gas.

2. The utility model has the effects of quickly reducing the temperature of the tail gas and improving the storage capacity of the tail gas by arranging the circulating water pipe, the water inlet pipe and the water outlet pipe, solves the problem that the storage capacity in the tank body is smaller as the gas expands due to a large amount of heat contained in the tail gas and occupies larger volume, and when the tail gas enters the first gas collecting tank or the second gas collecting tank, the circulating water flow in the circulating water pipe which is corresponding to the outer side of the tank body and surrounds takes away the heat emitted by the tail gas, the heat contained in the tail gas is reduced, the water flow in the circulating water pipe enters the vertical pipe from the water inlet pipe, then enters the circulating water pipe from the vertical pipe, flows to the vertical pipe from the circulating water pipe, and finally flows to the water outlet pipe to realize the water circulation in the circulating water pipe, in the process of continuous circulation of water, tail gas is continuously cooled, so that the gas storage amount in the first gas collecting tank and the second gas collecting tank is increased.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the front structure of the present invention;

FIG. 2 is a schematic view of the rear structure of the present invention;

fig. 3 is a schematic view of the rear lower structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a support plate; 2. a first gas collection tank; 3. a second gas collecting tank; 4. a circulating water pipe; 5. a vertical tube; 6. a water inlet pipe; 7. a water outlet pipe; 8. an air intake duct; 9. an air outlet duct; 10. a barometer; 11. a buffer tube; 12. a gas delivery pipe; 13. a groove type soft seal gate valve; 14. an end cap; 15. an air intake duct; 16. a blow-off pipe; 17. and (7) covering the tube.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, the utility model is a tail gas recovery soft sealing device for a silicon carbide smelting furnace, comprising a first gas collecting tank 2 and a second gas collecting tank 3, wherein one end of the first gas collecting tank 2 and one end of the second gas collecting tank 3 are provided with an air inlet conduit 8, the other end of the first gas collecting tank 2 and the other end of the second gas collecting tank 3 are provided with an air outlet conduit 9, the peripheral sides of the first gas collecting tank 2 and the second gas collecting tank 3 are arranged in an equidistant groove shape, a circulating water pipe 4 is arranged in a groove-shaped area arranged on the peripheral sides of the first gas collecting tank 2 and the second gas collecting tank 3, the upper end of the circulating water pipe 4 is respectively connected with a vertical pipe 5 in a penetrating way, the upper end of the vertical pipe 5 is connected with an water inlet pipe 6 and a water outlet pipe 7, the first gas collecting tank 2 and the second gas collecting tank 3 collect tail gas simultaneously in an initial state, but when one of the first gas collecting tank 2 or the second gas collecting tank 3 fails or needs maintenance, when the first gas collecting tank 2 breaks down or needs maintenance, the groove type soft sealing gate valve 13 arranged outside the gas conveying pipe 12 correspondingly arranged to the first gas collecting tank 2 is closed, the tail gas cannot enter the first gas collecting tank 2, namely the tail gas completely enters the second gas collecting tank 3, the device is used for continuously collecting the tail gas, the tail gas of the silicon carbide smelting furnace is always accompanied with high temperature, the high temperature causes gas expansion, more space is occupied, when the tail gas enters the first gas collecting tank 2 or the second gas collecting tank 3, the circulating water flow in the circulating water pipe 4 surrounding the outer side of the tank body takes away the heat emitted by the tail gas, the heat contained in the tail gas is reduced, the water flow in the circulating water pipe 4 enters the vertical pipe 5 from the water inlet pipe 6, then enters the circulating water pipe 4 from the vertical pipe 5, flows to the vertical pipe 5 from the circulating water pipe 4, and finally flows to the water outlet pipe 7, so that the water circulation in the circulating water pipe 4 is realized.

Wherein, as shown in fig. 1 and 2, the lower sides of the air inlet conduit 8 and the air outlet conduit 9 are respectively provided with a support plate 1 in a butting way, and the support plates 1 are provided with two groups, the support plates 1 are arranged in a sloping platform shape, the upper end of the support plate 1 is arranged in an arc opening, the support plate 1 supports and positions the air inlet conduit 8 and the air outlet conduit 9, so that the first gas collecting tank 2 and the second gas collecting tank 3 are fixed without relative position deviation, the outer end of the air inlet conduit 8 is fixedly connected with a buffer tube 11, the outer end of the buffer tube 11 is fixedly connected with an end cover 14, the outer side of the buffer tube 11 is provided with a gas pipe 12 in a penetrating way, the outer part of one end of the gas pipe 12 close to the buffer tube 11 is fixedly connected with a groove type soft sealing gate valve 13, one end of the gas pipe 12 far away from the buffer tube 11 is connected with a gas suction pipe 15 in a penetrating way, the gas suction pipe 15 is arranged in a penetrating way with an external suction device, the central position of the upper parts of one ends of the first gas collecting tank 2 and the second gas collecting tank 3 close to the air inlet conduit 8 is fixedly connected with a barometer 10, and the operation end of the barometer 10 is arranged inside the first gas collecting tank 2 and the second gas collecting tank 3, the tail gas discharged from the tail gas discharge pipe of the silicon carbide smelting furnace enters the gas pipe 12 along the gas suction pipe 15 under the action of an external suction device, the gas pipe 12 is provided with a group, the gas pipe 12 and the groove type soft sealing gate valve 13 are arranged in a one-to-one correspondence manner, the groove type soft sealing gate valve 13 controls the opening and closing of the corresponding gas pipe 12, after the tail gas enters the gas pipe 12 in an open state, the tail gas enters the buffer pipe 11 along the gas pipe 12, the gas with a certain speed becomes gentle in the buffer pipe 11 and then enters the first gas collecting tank 2 or the second gas collecting tank 3, when the tail gas continuously enters the first gas collecting tank 2 or the second gas collecting tank 3, the operation end of the barometer 10 detects the air pressure inside the first gas collecting tank 2 or the second gas collecting tank 3 and feeds back the air pressure to the outside, the air pressure value exceeds a certain threshold value, certain tail gas needs to be discharged through the air outlet guide pipe 9, the air outlet guide pipe 9 is communicated with the next working procedure, the buffer pipe 11 needs to be cleaned regularly, the cleaning process comprises the steps of separating the end cover 14 from the buffer pipe 11, manually cleaning the impurities in the buffer pipe 11, and then connecting the end cover 14 with the outer end of the buffer pipe 11 in a matched mode to ensure that the amount of the impurities in the buffer pipe 11 is below a standard value.

As shown in fig. 3, a sewage discharge pipe 16 penetrates through the central position of the lower portion of one end of each of the first gas collecting tank 2 and the second gas collecting tank 3, which is close to the air inlet duct 8, and a pipe cover 17 is screwed on the outer side of the lower end of the sewage discharge pipe 16, part of dust or other particles doped in the tail gas stays inside the first gas collecting tank 2 or the second gas collecting tank 3, after the first gas collecting tank 2 and the second gas collecting tank 3 operate for a long time, the stored capacity of the first gas collecting tank 2 or the second gas collecting tank is reduced due to more dust or other particles accumulated inside the first gas collecting tank 2 or the second gas collecting tank 3, and the heat dissipation effect is not good, so that a worker needs to open the pipe cover 17 periodically to perform sewage discharge treatment inside the first gas collecting tank 2 and the second gas collecting tank 3, that is to inflate or add water into the first gas collecting tank 2 or the second gas collecting tank 3, and the dust or other particles accumulated inside the first gas collecting tank 2 or the second gas collecting tank 3 are discharged from the sewage discharge pipe 16 to the external collection device, the working states of the first gas collecting tank 2 and the second gas collecting tank 3 are ensured to be normal.

The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made to the technical solutions described in the above embodiments, and to some of the technical features thereof, are included in the scope of the present invention.

Claims

1. The utility model provides a soft sealing device is retrieved to carborundum smelting furnace tail gas, includes gas collecting tank (2) and No. two gas collecting tank (3), its characterized in that: a gas collecting tank (2) and No. two gas collecting tank (3) one end link up and are provided with inlet duct (8), and a gas collecting tank (2) link up with No. two gas collecting tank (3) other ends and be provided with outlet duct (9), a gas collecting tank (2) and No. two gas collecting tank (3) periphery side are equidistance slot form setting, and are provided with circulating water pipe (4) in the slot form region that a gas collecting tank (2) and No. two gas collecting tank (3) week side set up, circulating water pipe (4) upper portion port is through-connected respectively has standpipe (5), and standpipe (5) upper end through connection has inlet tube (6) and outlet pipe (7).

2. The silicon carbide smelting furnace tail gas recovery soft sealing device according to claim 1, wherein the support plates (1) are arranged on the lower sides of the gas inlet guide pipe (8) and the gas outlet guide pipe (9) in a butting mode, two groups of support plates (1) are arranged, and the support plates (1) are arranged in an inclined platform shape.

3. The silicon carbide smelting furnace tail gas recovery soft sealing device according to claim 1, wherein a buffer tube (11) is fixedly connected to the outer end of the air inlet conduit (8), and an end cover (14) is fixedly connected to the outer end of the buffer tube (11).

4. The silicon carbide smelting furnace tail gas recovery soft sealing device according to claim 3, wherein a gas pipe (12) penetrates through the outside of the buffer tube (11), and a groove type soft sealing gate valve (13) is fixedly connected to the outside of one end of the gas pipe (12) close to the buffer tube (11).

5. The silicon carbide smelting furnace tail gas recovery soft sealing device according to claim 4, wherein an air suction pipe (15) penetrates through one end of the air delivery pipe (12) far away from the buffer pipe (11), and the air suction pipe (15) is arranged to penetrate through an external air suction device.

6. The silicon carbide smelting furnace tail gas recovery soft sealing device according to claim 1, wherein a barometer (10) is fixedly connected to the upper central position of one end of the first gas collecting tank (2) and the second gas collecting tank (3) close to the gas inlet conduit (8), and the operation end of the barometer (10) is arranged inside the first gas collecting tank (2) and the second gas collecting tank (3).

7. The silicon carbide smelting furnace tail gas recovery soft sealing device according to claim 1, wherein a drain pipe (16) penetrates through the center of the lower part of one end of the first gas collection tank (2) and the second gas collection tank (3) close to the gas inlet guide pipe (8), and a pipe cover (17) is in threaded connection with the outer side of the lower end of the drain pipe (16).