CN210356372U - High-temperature flue gas dust removal system - Google Patents
High-temperature flue gas dust removal system Download PDFInfo
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- CN210356372U CN210356372U CN201921052315.5U CN201921052315U CN210356372U CN 210356372 U CN210356372 U CN 210356372U CN 201921052315 U CN201921052315 U CN 201921052315U CN 210356372 U CN210356372 U CN 210356372U
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Abstract
The utility model discloses a high-temperature flue gas dust removal system, which comprises a cooling flue, a flue gas cooler and a dust removal device; the cooling flue is provided with a water cooling pipe sleeved on the outer side of the inner flue; a cooling pipe is arranged in a shell of the flue gas cooler, a flue gas passing flow channel is formed between the shell and the cooling pipe, a flue gas inlet and a flue gas outlet are communicated with the flue gas passing flow channel, and a refrigerant inlet and a refrigerant outlet are communicated with the cooling pipe; the inner cavity of the dust removing device is divided into a smoke cavity and a clean air cavity along the up-down direction, the high-pressure injection pipe extends into the clean air cavity from outside to inside, and the filter bag is communicated with the inner cavity of the high-pressure injection pipe and extends into the smoke cavity; a high-pressure air bag is arranged on the high-pressure injection pipe; the flue outlet is communicated with the flue gas inlet, the flue gas outlet is communicated with the flue gas inlet, and the smoke outlet is connected with the chimney. The utility model discloses can reduce the temperature and the kinetic energy of flue gas, make the flue gas when crossing the filter bag, cross the filter bag and can form the interception effectively to the dust in the flue gas, make the dust concentration in the flue gas reach the requirement.
Description
Technical Field
The utility model relates to a high temperature flue gas dust pelletizing system.
Background
For the dust removal of high-temperature flue gas generated by an electric sintering furnace, cyclone dust removal is adopted at present in China. The dust removal system has short service life and poor dust removal effect at high temperature, and can not reach the existing emission standard of atmospheric pollutants of industrial furnaces.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of better dust removal of the flue gas, the utility model provides a high-temperature flue gas dust removal system, which comprises a cooling flue, a flue gas cooler and a dust removal device; the cooling flue comprises an inner flue for flue gas circulation and a water-cooling pipe sleeved on the outer side of the inner flue; two ends of the inner flue are respectively formed into a flue inlet and a flue outlet;
the smoke cooler comprises a shell, a cooling pipe is arranged in the shell, a smoke flowing channel is formed between the shell and the cooling pipe, and a smoke inlet and a smoke outlet which are communicated with the smoke flowing channel, and a refrigerant inlet and a refrigerant outlet which are communicated with the cooling pipe are arranged on the shell;
the dust removal device comprises a box body, wherein a partition plate is arranged in the box body, the partition plate divides an inner cavity of the box body into a smoke gas cavity and an air purification cavity along the up-down direction, and the air purification cavity is positioned on the upper side of the smoke gas cavity; a high-pressure jet pipe extends into the gas cleaning cavity from outside to inside, a filter bag is arranged on the clapboard, the filter bag is upwards communicated with the inner cavity of the high-pressure jet pipe, and the filter bag extends downwards into the flue gas cavity; a high-pressure air bag is arranged at one end of the high-pressure injection pipe positioned outside the box body; a smoke inlet communicated with the smoke cavity and a smoke outlet communicated with the purified air cavity are arranged on the box body; a dust outlet is arranged at the bottom of the box body;
the flue inlet of the cooling flue is used for being communicated with a hearth of the furnace, the flue outlet of the cooling flue is communicated with the flue gas inlet of the flue gas cooler, the flue gas outlet of the flue gas cooler is communicated with the flue gas inlet of the dust removal device, and the smoke exhaust port of the dust removal device is connected with a chimney.
The utility model discloses in, the flue gas is successively through cooling flue and flue gas cooler, makes the temperature of flue gas reduce by a wide margin, reduces the kinetic energy of flue gas simultaneously, then the flue gas enters into the flue gas intracavity through advancing the mouth, enters into the clean gas intracavity after the filter bag filters, then discharges through the outlet flue. Most of the dust intercepted by the filter bag falls to the bottom of the box body, a small part of the dust is adhered to the outer side of the filter bag, after a period of time, compressed air in the high-pressure air bag is injected into the filter bag through the high-pressure injection pipe, so that the dust adhered to the outer side of the filter bag falls, and the filtering function of the filter bag is recovered.
Because the temperature and the kinetic energy of the flue gas are reduced, when the flue gas passes through the filter bag, the filter bag can effectively intercept dust in the flue gas, and the concentration of the dust in the flue gas meets the requirement.
Specifically, two partition plates are installed in a shell of the flue gas cooler along the horizontal direction, the two partition plates divide an inner cavity of the shell into an upper cavity, a middle cavity and a lower cavity from top to bottom, a refrigerant inlet is communicated with the lower cavity, a refrigerant outlet is communicated with the upper cavity, and a flue gas inlet and a flue gas outlet are both communicated with the middle cavity; the cooling pipe extends along the vertical direction, and the upper end and the lower extreme of cooling pipe communicate respectively and hold the chamber down.
The flue gas cooler can further cool the flue gas, and can further recover heat energy while reducing the temperature of the flue gas.
In order to improve the cleaning capability of dust on the filter bag, an annular gap ejector extending into the filter bag is arranged on the high-pressure injection pipe.
In order to clean the dust in the box body conveniently, the box body is provided with a conical bottom, the bottom of the conical bottom is provided with the dust outlet, and the dust outlet is provided with a gate valve for discharging the dust.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the dust removing device.
Detailed Description
Referring to fig. 1 and 2, it comprises a cooling flue 1, a flue gas cooler 2 and a dust removal device 3. The cooling flue 1 comprises an inner flue 11 for flue gas circulation and a water-cooling pipe 12 sleeved outside the inner flue 11; the two ends of the inner flue are formed as a flue inlet 16 and a flue outlet 17, respectively. A water inlet 13 communicated with the water-cooling pipe 12 is arranged at one end of the flue inlet, and a water outlet 14 communicated with the water-cooling pipe 12 is arranged at one end of the flue outlet.
The flue gas cooler 2 comprises a shell 20, two isolation plates are arranged in the shell 20 along the horizontal direction, the two isolation plates are respectively an upper isolation plate 25 and a lower isolation plate 26 positioned on the lower side of the upper isolation plate, and the inner cavity of the shell is divided into an upper cavity, a middle cavity and a lower cavity by the upper isolation plate 25 and the lower isolation plate 26 from top to bottom. A plurality of cooling pipes 27 are arranged in the housing along the vertical direction, the upper ends of the cooling pipes 27 penetrate through the upper partition plate 25 and then are communicated with the upper cavity, and the lower ends of the cooling pipes 27 penetrate through the lower partition plate 26 and then are communicated with the lower cavity. The space of the middle containing cavity outside the cooling pipe forms a smoke overflowing channel, a smoke inlet 21 is communicated with one end of the overflowing channel, and a smoke outlet 22 is communicated with the other end of the overflowing channel. The refrigerant inlet 23 is communicated with the lower cavity, and the refrigerant outlet 24 is communicated with the upper cavity.
The dust removal device comprises a box body 35 with a mounting opening at the upper end, a partition plate 351 is arranged in the box body 35, the partition plate 351 divides the inner cavity of the box body into a flue gas cavity 34 and a clean gas cavity 37 along the up-down direction, and the clean gas cavity 37 is positioned at the upper side of the flue gas cavity 34; a high pressure injection pipe 38 extends into the clean gas chamber 37 from the outside inwards, a plurality of filter bags 39 are arranged on the partition 351, the filter bags 39 are upwards communicated with the inner cavity of the high pressure injection pipe 38, and the filter bags downwards extend into the flue gas chamber 34.
A high-pressure air bag 381 is installed on one end of the high-pressure injection pipe 38 located outside the tank body; the electromagnetic pulse valve 382 is installed on the high-pressure injection pipe and located between the tank and the high-pressure air bag 381, and is used for controlling the injection of the compressed air in the high-pressure air bag 381 into the filter bag.
The annular gap injector is mounted in an annular gap injector 391, which annular gap injector 391 extends into the filter bag.
A smoke inlet 31 communicating with a smoke chamber 34 and a smoke outlet 32 communicating with a clean air chamber 37 are provided in the case. The box has a conical bottom 352, the conical bottom 352 being formed as a hopper 341. A dust outlet 353 is provided at the bottom of the conical bottom 352, and a gate valve 33 for discharging dust is mounted on the dust outlet 353.
A cover plate 36 is arranged on the mounting opening.
The flue inlet 16 of the cooling flue is communicated with the hearth 100 of the kiln,
the flue outlet 17 of the cooling flue is communicated with the flue gas inlet 21 of the flue gas cooler 2, the flue gas outlet 22 of the flue gas cooler is communicated with the flue gas inlet 31 of the dust removal device 3, and the smoke outlet 32 of the dust removal device is connected with the chimney 5 through the extension 4.
Claims (4)
1. A high-temperature flue gas dust removal system is characterized by comprising a cooling flue, a flue gas cooler and a dust removal device;
the cooling flue comprises an inner flue for flue gas circulation and a water-cooling pipe sleeved on the outer side of the inner flue; two ends of the inner flue are respectively formed into a flue inlet and a flue outlet;
the smoke cooler comprises a shell, a cooling pipe is arranged in the shell, a smoke flowing channel is formed between the shell and the cooling pipe, and a smoke inlet and a smoke outlet which are communicated with the smoke flowing channel, and a refrigerant inlet and a refrigerant outlet which are communicated with the cooling pipe are arranged on the shell;
the dust removal device comprises a box body, wherein a partition plate is arranged in the box body, the partition plate divides an inner cavity of the box body into a smoke gas cavity and an air purification cavity along the up-down direction, and the air purification cavity is positioned on the upper side of the smoke gas cavity; a high-pressure jet pipe extends into the gas cleaning cavity from outside to inside, a filter bag is arranged on the clapboard, the filter bag is upwards communicated with the inner cavity of the high-pressure jet pipe, and the filter bag extends downwards into the flue gas cavity; a high-pressure air bag is arranged at one end of the high-pressure injection pipe positioned outside the box body; a smoke inlet communicated with the smoke cavity and a smoke outlet communicated with the purified air cavity are arranged on the box body; a dust outlet is arranged at the bottom of the box body;
the flue inlet of the cooling flue is used for being communicated with a hearth of the furnace, the flue outlet of the cooling flue is communicated with the flue gas inlet of the flue gas cooler, the flue gas outlet of the flue gas cooler is communicated with the flue gas inlet of the dust removal device, and the smoke exhaust port of the dust removal device is connected with a chimney.
2. A high temperature flue gas dust removal system as recited in claim 1,
the two partition plates divide an inner cavity of the shell into an upper cavity, a middle cavity and a lower cavity from top to bottom, wherein a refrigerant inlet is communicated with the lower cavity, a refrigerant outlet is communicated with the upper cavity, and a flue gas inlet and a flue gas outlet are both communicated with the middle cavity;
the cooling pipe extends along the vertical direction, and the upper end and the lower extreme of cooling pipe communicate respectively and hold the chamber down.
3. A high temperature flue gas dust removal system as claimed in claim 1, wherein an annular gap eductor is mounted on the high pressure injection tube and extends into the filter bag.
4. A high temperature flue gas dust removal system as claimed in claim 1, wherein the housing has a conical bottom, said dust outlet is provided at the bottom of the conical bottom, and a gate valve for discharging dust is mounted on the dust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921052315.5U CN210356372U (en) | 2019-07-08 | 2019-07-08 | High-temperature flue gas dust removal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921052315.5U CN210356372U (en) | 2019-07-08 | 2019-07-08 | High-temperature flue gas dust removal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210356372U true CN210356372U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921052315.5U Active CN210356372U (en) | 2019-07-08 | 2019-07-08 | High-temperature flue gas dust removal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210356372U (en) |
-
2019
- 2019-07-08 CN CN201921052315.5U patent/CN210356372U/en active Active
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