CN217247660U

CN217247660U - High-temperature gas-solid separator

Info

Publication number: CN217247660U
Application number: CN202220302432.8U
Authority: CN
Inventors: 熊金强; 方泽然; 张旦闻; 刘悦; 徐传宇; 黄己苻; 程大卫; 徐震岳
Original assignee: Luoyang Research Institute Of Dalian University Of Technology
Current assignee: Luoyang Research Institute Of Dalian University Of Technology
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-08-23
Anticipated expiration: 2032-02-15

Abstract

A high-temperature gas-solid separator is sequentially divided into an exhaust cover, a filter cartridge and a dust exhaust seat from top to bottom, wherein the side wall of the filter cartridge is provided with an air inlet through which dust-containing gas enters the separator, a plurality of layers of filter screens which are concentrically distributed are arranged in the filter cartridge, dust-containing cavities and clean cavities which are separated by the filter screens are alternately arranged along the radial direction of the filter cartridge, the air inlet is communicated with the dust-containing cavities, the gas in the dust-containing cavities flows into the clean cavities after passing through the filter screens, and the clean cavities are communicated with an exhaust port which is arranged on the exhaust cover; the dust-containing cavity comprises a central dust-containing cavity formed by the central filtering screen and an annular dust-containing cavity formed between the adjacent filtering screens, the upper part of the annular dust-containing cavity is sealed, the lower part of the annular dust-containing cavity is communicated with the inner cavity of the dust exhaust seat, and a dust exhaust channel for discharging dust is arranged in the dust exhaust seat. The utility model discloses can effectively separate out the solid particle in the cement kiln waste gas, avoid solid particle to discharge and can cause the dust in the air to exceed standard in the air.

Description

High-temperature gas-solid separator

Technical Field

The utility model relates to a high temperature gas-solid separation field, specific high temperature gas-solid separator that says so.

Background

A large amount of waste gas is generated in the production process of the cement kiln, the waste gas often contains a certain amount of dust which is solid particles such as calcium oxide, magnesium oxide and the like, and the emission of the solid particles into the air can cause the standard exceeding of the dust in the air and cause pollution to the environment.

Traditional solid-gas separation scheme is many with cyclone separation device separation dust, and during cyclone separation device separation dust, because the high temperature and the pressure of cement kiln waste gas are too big, and then lead to the separation of waste gas dust thoroughly inadequately, and because factors such as the friction between waste gas and the separator lead to the waste gas fast to slow down, and then lead to waste gas discharge not smooth, and then the production that leads to the cement kiln receives serious influence.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high temperature gas-solid separator to effectively separate out the solid particle in the cement kiln waste gas, avoid solid particle to discharge can cause the dust in the air to exceed standard, cause the pollution to the environment in the air.

In order to solve the technical problem, the utility model discloses a concrete scheme does: a high-temperature gas-solid separator is sequentially divided into an exhaust cover, a filter cartridge and a dust exhaust seat from top to bottom, wherein the side wall of the filter cartridge is provided with an air inlet through which dust-containing gas enters the separator, a plurality of layers of filter screens which are concentrically distributed are arranged in the filter cartridge, dust-containing cavities and clean cavities which are separated by the filter screens are alternately arranged along the radial direction of the filter cartridge, the air inlet is communicated with the dust-containing cavities, the gas in the dust-containing cavities flows into the clean cavities after passing through the filter screens, and the clean cavities are communicated with an exhaust port which is arranged on the exhaust cover; the dust-containing cavity comprises a central dust-containing cavity formed by the central filter screen and an annular dust-containing cavity formed between the adjacent filter screens, the upper part of the annular dust-containing cavity is sealed, the lower part of the annular dust-containing cavity is communicated with the inner cavity of the dust exhaust seat, and a dust exhaust channel for discharging dust is arranged in the dust exhaust seat.

As above-mentioned technical scheme's further optimization, the filter screen is formed by a plurality of filter assembly circumference range, and every filter assembly all includes the frame, along the backup pad of frame direction of height interval setting and the multilayer filter of setting between adjacent backup pad, and the multilayer filter includes the filter body of arranging along the direction of height and sets up the support bar at filter body surface to make and form the filtration passageway that is used for filtering dirty gas between adjacent filter body and the support bar.

As the further optimization of the technical scheme, the included angle between the air inlet end of the multi-layer filter plate and the horizontal plane is 30-60 ℃.

As the further optimization of the technical scheme, the bending part is arranged on the filter plate body.

As a further optimization of the above technical solution, a support column for supporting the filter screen is provided at the lower portion of the filter screen.

As the further optimization of the technical scheme, a second dust exhaust channel for exhausting dust in the cleaning cavity is arranged in the supporting column.

As a further optimization of the technical scheme, the upper part of the central dust-containing cavity is provided with an exhaust passage.

As the further optimization of the technical scheme, a plurality of baffles are arranged in the air inlet and used for tangentially guiding the dust-containing gas in the air inlet into the annular dust-containing cavity and the central dust-containing cavity.

As a further optimization of the technical scheme, the exhaust cover is provided with a recoil cannon which is used for introducing high-pressure gas into the clean cavity to clean dust in the filter screen and the second dust exhaust channel.

Compared with the prior art, the beneficial effects of the utility model are as follows: 1. the utility model discloses a set up the filter screen that the multilayer distributes with one heart in the cartridge filter, make to form dust-containing chamber and the clean chamber that distribute alternately between the adjacent filter screen, the gas in the dust-containing chamber gets into the clean chamber and discharges the separator by the clean chamber after the filtration of filter screen, the filter screen comprises the multilayer filter, the filter channel inlet end on the filter screen is 30 ~ 60 ℃ with the contained angle of horizontal plane, make the dust in the dust-containing gas difficult to get into the filter channel, thereby filter the dust to the dust-containing chamber; the bent part arranged at the position of the filter plate body close to the air inlet end can increase the resistance of air and part of dust entering the filter channel, and reduce the flow speed of the air and the part of dust, so that the dust is prevented from passing through the filter channel, and the filter effect is further improved.

2. The backflushing gun arranged on the separator is communicated with the clean cavity, and high-pressure gas is introduced into the clean cavity through the backflushing gun, so that on one hand, gas in the second dust exhaust channel of the two cylinders of the clean cavity can be cleaned, and on the other hand, dust in the filter channel can be backflushed to the dust-containing cavity and is exhausted from the dust-containing cavity.

3. The setting of multilayer filter is between two adjacent backup pads, and the height of multilayer filter highly unanimous with adjacent backup pad interval, can avoid dirty gas to flow by the clearance between multilayer filter and the adjacent backup pad.

Drawings

FIG. 1 is a side sectional view of the novel form of the present invention;

fig. 2 is an overall schematic view of the present invention;

fig. 3 is a transverse sectional view of the air inlet of the present invention;

FIG. 4 is a schematic view of a filter assembly;

FIG. 5 is a schematic view of a multi-layer filter panel in the filter assembly;

reference numerals: 1. the dust exhaust device comprises an exhaust cover, 2, a filter cartridge, 3, a dust exhaust seat, 4, a dust exhaust channel, 401, a first dust exhaust channel, 402, a second dust exhaust channel, 5, a support column, 6, a filter screen, 7, a clean cavity, 8, a dust containing cavity, 801, a central dust containing cavity, 802, an annular dust containing cavity, 9, a support block, 10, an exhaust channel, 11, an air inlet, 12, an exhaust outlet, 13, a recoil monitor, 14, a filter assembly, 1401, a frame, 1402, a multi-layer filter plate, 1402-1, a filter plate body, 1402-2, a support strip, 1402-3, a filter channel, 1403, a support plate, 15 and a baffle plate.

Detailed Description

As shown in fig. 1 and 2, the present invention relates to a high temperature gas-solid separator, which is divided into an exhaust cover 1, a filter cartridge 2 and a dust exhaust seat 3 from top to bottom in sequence, wherein the exhaust cover 1, the filter cartridge 2 and the dust exhaust seat 3 are cylindrical with the same diameter. The filter cartridge 2 is internally provided with a plurality of layers of filter screens 6 which are concentrically distributed at intervals, and dust-containing cavities 8 and clean cavities 7 which are separated by the filter screens 6 are alternately arranged along the radial direction of the filter cartridge 2, wherein the dust-containing cavities 8 comprise central dust-containing cavities 8 and annular dust-containing cavities 8, the central dust-containing cavities 8 are cylindrical and are formed by the innermost layer of the filter screens 6, the annular dust-containing cavities 8 are annular and are formed by the adjacent layer of the filter screens 6, and the clean cavities 7 are also annular and are formed by the adjacent filter screens 6.

As shown in fig. 3, the side wall of the filter cartridge 2 is provided with an air inlet 11 for allowing the dust-containing gas to enter the separator, the air inlet 11 is communicated with the dust-containing chamber 8, the air inlet 11 is provided with a plurality of baffles 15, the baffles 15 are used for tangentially guiding the dust-containing gas in the air inlet 11 into the annular dust-containing chamber 8 and the central dust-containing chamber 8, and the dust-containing gas swirls in the dust-containing chamber 8 and flows into the clean chamber 7 after passing through the filter screen 6.

It should be noted that, in the novel cement kiln waste gas treatment device, the dust-containing gas introduced into the reactor from the gas inlet 11 is cement kiln waste gas containing solid particles, and the filtered dust is the solid particles in the cement kiln waste gas. The temperature of the cement kiln waste gas is generally 1100-1200 ℃, and in order to avoid large temperature reduction amplitude of the cement kiln waste gas when gas-solid separation is carried out through the separator, the shell of the gas-solid separator is made of a fireproof heat-insulating material.

The upper part of the annular dust-containing cavity 8 is sealed, the lower part of the annular dust-containing cavity 8 is open, and the lower part of the annular dust-containing cavity 8 is communicated with the inner cavity of the dust exhaust seat 3. The inner cavity of the dust exhaust seat 3 is a conical cavity, the large-diameter end of the conical cavity is upward and communicated with the inner side of the filter cartridge 2, and the small-diameter section of the conical cavity is downward. The upper part and the lower part of the central dust-containing cavity 8 are both arranged in an open manner, the upper part of the central dust-containing cavity 8 is provided with an exhaust passage 10, and the lower part is communicated with the inner cavity of the dust exhaust seat 3. One part of the gas in the central dust-containing cavity 8 is filtered by the innermost filter screen 6 and then discharged to the adjacent clean cavity 7, and the other part is discharged out of the reactor through the exhaust passage 10 after cyclone dust collection in the inner cavity of the conical dust exhaust seat 3.

A dust exhaust channel 4 for discharging dust out of the reactor is arranged in the dust exhaust seat 3, and the dust exhaust channel 4 comprises a first dust exhaust channel 401 for discharging dust in the dust-containing cavity 8 and a second dust exhaust channel 402 for discharging dust in the clean cavity 7. The first dust exhaust channel 401 is arranged at the small diameter end of the conical cavity in the dust exhaust seat 3, and dust filtered by the filter screen 6 and dust collected after cyclone dust removal in the conical cavity are exhausted from the first dust exhaust channel 401; because the clean gas filtered by the filter screen 6 inevitably contains a certain amount of dust, the second dust exhaust channel 402 is communicated with the lower end of the clean chamber 7, the dust in the clean chamber 7 can be discharged through the second dust exhaust channel 402 after sinking due to gravity, and the number of the second dust exhaust channels is multiple and vertically arranged in the dust exhaust seat 3.

The upper portion of clean chamber 7 sets up to uncovered, and clean chamber 7 is linked together through annular air channel and the gas vent 12 of seting up on exhaust cover 1, and annular air channel sets up between exhaust cover 1 and cartridge filter 2, is provided with a plurality of supporting shoes 9 in the annular air channel, and supporting shoe 9 is along the circumferencial direction interval distribution on clean chamber 7 upper portion. The lower part of the cleaning chamber 7 is provided with an end plate (not shown in the figure) to prevent the gas in the cleaning chamber 7 from flowing into the tapered chamber or the gas in the tapered chamber from flowing into the cleaning chamber 7.

The lower part of filter screen 6 is provided with support column 5 that is used for supporting filter screen 6, and support column 5 sets up along 6 circumference intervals of filter screen, and the diameter of support column 5 is greater than the width of clean chamber 7 so that support column 5 can support the filter screen 6 of clean chamber 7 both sides simultaneously, and the inside of support column 5 is provided with the cylindricality cavity, the cylindricality cavity is the second dust exhaust passageway 402 who is used for discharging dust in the clean chamber 7 promptly.

As shown in fig. 4 and 5, the filter screen 6 is formed by a plurality of filter assemblies 14 arranged circumferentially, each filter assembly 14 comprises a frame 1401, support plates 1403 arranged at intervals along the height direction of the frame 1401, and a plurality of filter plates 1402 arranged between adjacent support plates 1403, the height of the plurality of filter plates 1402 is consistent with the distance between the upper and lower adjacent support plates 1403, so as to prevent the dusty gas from flowing out without being filtered through the gaps between the plurality of filter plates 1402 and the adjacent support plates 1403. The multi-layer filter plate 1402 comprises filter plate bodies 1402-1 arranged along the height direction and support strips 1402-2 arranged on the lower surface of the filter plate bodies 1402-1, two support strips 1402-2 are arranged on the lower surface of each filter plate body 1402-1 at intervals, and slit type filter channels 1402-3 for filtering dust-containing gas are formed between the support strips 1402-2 and the adjacent filter plate bodies 1402-1. The height of the middle filtering channel 1402-3 of the utility model is 0.5mm, so the dust particles with the particle diameter larger than 0.5mm can be filtered. Since the filter screen 6 has a ring shape, the filter screen 6 and the corresponding frame 1401 may be provided in a fan shape in order to facilitate the assembly of the filter screen 6.

The included angle between the air inlet end of the multi-layer filter plate 1402 and the horizontal plane is 30-60 ℃, and the included angle between the support plate 1403 and the horizontal plane is consistent with the included angle between the multi-layer filter plate 1402 and the horizontal plane.

The dust is solid particles, the specific gravity of the dust is far greater than that of the gas, the larger the mass is, the larger the inertia is, according to the law of conservation of angular momentum, the momentum of the dust in the dust-containing gas is far greater than that of the gas, so that the gas easily changes the direction in the rotation process of the dust-containing chamber and passes through the filter channel 1402-3 from the gas inlet end of the multi-layer filter plate 1402 to enter the adjacent clean chamber, the dust in the gas is not easily changed in direction and is difficult to enter the filter channel 1402-3, the rotating dust is contacted with the inner wall of the conical chamber of the multi-layer filter plate 1402 or the dust exhaust seat 3, and the dust falls down by the downward momentum and the downward gravity due to the loss of radial inertia force to enter the first dust exhaust channel 401.

Further, the filter panel body 1402-1 may be further provided with a bend near the air inlet end to form a curved filter passage 1402-3 for increasing the resistance of the dusty air flow within the filter passage 1402-3. Even if part of dust in the dust-containing gas enters the filtering channel, the gas speed is reduced due to the obstruction of the bent section in the filtering channel 1402-3, and the moving direction needs to be changed again, so that the gas in the dust-containing gas can still pass through the filtering channel 1402-3, but the dust is difficult to pass through the filtering channel 1402-3, and the filtering effect is further improved.

The recoil cannon 13 can inject high-pressure gas into the clean cavity 7. With the continuous operation of the filtering work, a certain amount of dust is inevitably accumulated in the filtering screen 6 and the clean cavity 7, and the filtering effect is influenced. Therefore, the exhaust cover 1 is provided with a recoil cannon 13, the recoil cannon 13 is communicated with the clean cavity 7, high-pressure gas can be introduced into the clean cavity 7 through the recoil cannon 13, and dust accumulated in the clean cavity 7 is blown into the second dust exhaust channel 402 to be exhausted out of the clean cavity 7; meanwhile, the filtered dust attached to the inside of the filter screen 6 is reversely blown out to the dust-containing cavity 8 by the high-pressure gas in the clean cavity 7 and falls into the first dust exhaust channel 401 through the dust-containing cavity 8, so that the filter screen 6 is prevented from being blocked to influence the filtering effect.

Claims

1. A high-temperature gas-solid separator is characterized in that the separator is sequentially divided into an exhaust cover (1), a filter cartridge (2) and a dust exhaust seat (3) from top to bottom, the side wall of the filter cartridge (2) is provided with an air inlet (11) for allowing dust-containing gas to enter the separator, the filter cartridge (2) is internally provided with a plurality of layers of filter screens (6) which are concentrically distributed, dust-containing cavities (8) and clean cavities (7) which are separated by the filter screens (6) are alternately arranged along the radial direction of the filter cartridge (2), the air inlet (11) is communicated with the dust-containing cavities (8), the gas in the dust-containing cavities (8) flows into the clean cavities (7) after passing through the filter screens (6), and the clean cavities (7) are communicated with an exhaust port (12) formed in the exhaust cover (1); the dust-containing cavity (8) comprises a central dust-containing cavity (801) formed by the central filtering screen (6) and an annular dust-containing cavity (802) formed between the adjacent filtering screens (6), the upper part of the annular dust-containing cavity (802) is sealed, the lower part of the annular dust-containing cavity is communicated with the inner cavity of the dust exhaust seat (3), and a dust exhaust channel (4) for dust exhaust is arranged in the dust exhaust seat (3).

2. A high temperature gas-solid separator according to claim 1, wherein the filter screen (6) is formed by a plurality of filter elements (14) arranged circumferentially, each filter element (14) comprising a frame (1401), support plates (1403) arranged at intervals in the height direction of the frame (1401) and a plurality of filter plates (1402) arranged between adjacent support plates (1403), the plurality of filter plates (1402) comprising filter plate bodies (1402-1) arranged in the height direction and support strips (1402-2) arranged on the surfaces of the filter plate bodies (1402-1), so that filter channels (1402-3) for filtering dusty gas are formed between adjacent filter plate bodies (1402-1) and support strips (1402-2).

3. The high-temperature gas-solid separator according to claim 2, wherein the gas inlet end of the multi-layer filter plate (1402) is at an angle of 30 to 60 ℃ with respect to the horizontal plane.

4. A high temperature gas-solid separator according to claim 2, wherein the filter plate body (1402-1) is provided with a bend.

5. A high temperature gas-solid separator according to claim 1, characterized in that the lower part of the filter screen (6) is provided with support pillars (5) for supporting the filter screen (6).

6. A high temperature gas-solid separator according to claim 5, characterized in that the inside of the supporting pillar (5) is provided with a second dust exhaust passage (402) for exhausting dust in the clean chamber (7).

7. A high temperature gas-solid separator according to claim 1, characterized in that the upper part of the central dust-containing chamber (801) is provided with a gas discharge channel (10).

8. A high temperature gas-solid separator as claimed in claim 1, characterized in that a plurality of baffles (15) are arranged in the gas inlet (11), the baffles (15) being arranged to tangentially direct dusty gas in the gas inlet (11) into the annular dusty chamber (802) and the central dusty chamber (801).

9. The high-temperature gas-solid separator as claimed in claim 1, wherein the exhaust cover (1) is provided with a recoil cannon (13), and the recoil cannon (13) is used for introducing high-pressure gas into the clean chamber (7) to clean dust in the filter screen (6) and the second dust exhaust channel (402).