CN216935292U

CN216935292U - Multi-stage cyclone dust collector

Info

Publication number: CN216935292U
Application number: CN202220271352.0U
Authority: CN
Inventors: 王丹丹
Original assignee: Xinjiang Tianxin Jingrun Environmental Protection Technology Co ltd
Current assignee: Xinjiang Tianxin Jingrun Environmental Protection Technology Co ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-07-12
Anticipated expiration: 2032-02-10

Abstract

The utility model relates to the technical field of environmental protection, in particular to a multi-stage cyclone dust removal device, which comprises a first-stage dust removal device and a plurality of second-stage dust removal devices which are connected by pipelines, wherein the first-stage dust removal device comprises a shell, an air inlet pipe is connected to the upper part of the shell, a spiral partition plate is arranged in the shell, a spiral air duct is formed in the spiral partition plate, a heat exchange channel is arranged in the spiral partition plate, an air outlet pipe is arranged at the top of the shell, the air outlet pipe is connected with the second-stage dust removal devices by pipelines, a dust exhaust port is arranged at the bottom of the shell, high-temperature dusty gas flows in the spiral air duct, and a heat exchange medium flows in the heat exchange channel. The dual purposes of waste heat utilization and environmental protection emission are achieved.

Description

Multi-stage cyclone dust collector

Technical Field

The utility model relates to the technical field of environmental protection, in particular to a multistage cyclone dust removal device.

Background

The tail smoke emission is always a perfect subject, the content of harmful gases such as sulfur, carbon dioxide and the like in the smoke is very high, if the smoke is not treated, the ecological environment is seriously damaged, and the dust removal is divided into two stages of coarse dust removal and fine dust removal. The coarse dust removal mainly adopts a dust settling chamber, reduces the flow velocity of dust-containing flue gas, realizes natural settling of coarse particle dust by utilizing the gravity principle, and reduces the dust content in the flue gas. The fine dust removal generally adopts a bag-type dust remover, an electric dust remover and the like to carry out high-efficiency dust removal, and reaches the environmental-friendly discharge standard. The electric dust collector has huge equipment and large floor area; the consumption of steel is high, and one-time investment is large; the structure is complex, and the precision requirements for manufacturing and installation are high; the specific resistance of the dust has certain requirements. The cloth bag dust removal is not suitable for operation in a high-temperature state, when the moisture content of the dust in the flue gas exceeds more than 25%, the dust is easy to stick to the bag and block the bag, the cloth bag is difficult to clean, the resistance is increased, the cloth bag is damaged due to early failure, and the cost for replacing the filter bag is very high.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a multistage cyclone dust removing apparatus.

The technical scheme adopted by the utility model is as follows: multistage cyclone dust collector, the key lies in: the one-level dust collector and a plurality of second grade dust collector including the pipe connection, one-level dust collector includes the casing, the upper portion of casing is connected with the air-supply line, be equipped with spiral baffle in the casing, spiral baffle is in form spiral wind channel in the casing, set up the heat transfer passageway in the spiral baffle, the top of casing is equipped with out the tuber pipe, it is a plurality of to go out the tuber pipe second grade dust collector pipe connection, the dust exhaust mouth has been seted up to the casing bottom, and high temperature dusty gas flows in spiral wind channel, and heat transfer medium flows in the heat transfer passageway.

Preferably, the spiral partition plate comprises a plurality of strip-shaped arc plates, cavities are formed in the strip-shaped arc plates, the strip-shaped arc plates are spliced to form an integral structure, adjacent cavities are sequentially communicated to form the heat exchange channel, and the upper end of the spiral partition plate is fixedly connected with the top of the shell.

Preferably, the air inlet pipe is arranged close to the top of the shell and connected with the shell along the tangential direction.

Preferably, the dust exhaust device further comprises a medium inlet pipe and a medium outlet pipe, the medium outlet pipe is communicated with the cavity on the outermost side and penetrates out of the top of the shell, and the medium inlet pipe is communicated with the cavity on the innermost side and penetrates out of the dust exhaust port.

Preferably, the lower part of the shell is contracted towards the center to form an inverted cone, and the dust exhaust port is positioned at the vertex of the cone.

Preferably, the outer wall of the shell is provided with a heat insulation layer.

Preferably, the secondary dust removal device comprises a bag-type dust remover.

Has the advantages that: compared with the prior art, the multistage cyclone dust removal device provided by the utility model is simple in structure, multistage dust removal is carried out on high-temperature flue gas of a boiler by combining the primary dust removal device with the secondary dust removal device, the primary dust removal device enables most of heat in the hot flue gas to be absorbed by a heat absorption medium, waste heat utilization is realized, dust in the flue gas is preliminarily removed, the secondary dust removal device carries out secondary removal on the cooled flue gas, the dust removal efficiency is high, the maintenance cost is low, the heat exchange and dust removal are organically combined, and the dual purposes of waste heat utilization and environment-friendly emission are achieved.

Drawings

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

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic structural view of the spiral separator.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-2, the multi-stage cyclone dust removing device comprises a first-stage dust removing device and a plurality of second-stage dust removing devices 8 which are connected through pipelines, wherein the first-stage dust removing device comprises a shell 1, the upper portion of the shell 1 is connected with an air inlet pipe 2, a spiral partition plate 3 is arranged in the shell 1, the spiral partition plate 3 forms a spiral air duct in the shell 1, a heat exchange channel is arranged in the spiral partition plate 3, an air outlet pipe 4 is arranged at the top of the shell 1, the air outlet pipe 4 is connected with the second-stage dust removing devices 8 through pipelines, a dust exhaust port 5 is formed in the bottom of the shell 1, high-temperature dust-containing gas flows in the spiral air duct, and a heat exchange medium flows in the heat exchange channel. During the in-service use, with one-level dust collector and boiler pipe intercommunication, high temperature flue gas gets into spiral wind channel from the air-supply line, and the air current is when rotary motion along spiral baffle, and the dust granule in the air current can be separated out because of the effect of receiving the centrifugal force, discharges from the dust exhaust mouth, and the heat in the flue gas is absorbed by heat transfer medium gradually, and exhaust flue gas temperature is very low.

In this embodiment, as shown in fig. 3, the spiral partition plate 3 includes a plurality of strip-shaped arc plates 31, cavities are formed in the strip-shaped arc plates 31, the strip-shaped arc plates 31 are spliced to form an integral structure, adjacent cavities are sequentially communicated to form the heat exchange channel, and the upper end of the spiral partition plate 3 is fixedly connected to the top of the housing 1. When the heat exchange device is actually used, in the process that flue gas flows in the spiral air duct, the heat exchange medium is stored in the cavity and can gradually absorb the heat of the flue gas.

In this embodiment, the air inlet pipe 2 is disposed near the top of the housing 1 and connected to the housing 1 along a tangential direction. When the dust separation device is in actual use, airflow enters the spiral air duct along the tangential direction, so that the centrifugal force generated by the tangential speed of the rotating airflow is helpful for separating dust particles in the airflow from the airflow.

In this embodiment, the dust exhaust device further comprises a medium inlet pipe 6 and a medium outlet pipe 7, the medium outlet pipe 7 is communicated with the cavity on the outermost side and penetrates out of the top of the shell 1, the medium inlet pipe 6 is communicated with the cavity on the innermost side and penetrates out of the dust exhaust port 5, and a temperature sensor is arranged on the medium outlet pipe 7. During the in-service use, the heat transfer medium is different with the flow direction of high temperature flue gas, improves heat exchange efficiency.

In this embodiment, the lower portion of the casing 1 is tapered toward the center to form an inverted cone, and the dust exhaust port 5 is located at the vertex of the cone. When in actual use, the dust collector is beneficial to dust collection.

In this embodiment, the outer wall of the shell 1 is provided with a heat insulation layer, so that heat loss is avoided during actual use.

In this embodiment, the secondary dust removing device 8 includes a bag-type dust remover. During the in-service use, the flue gas through the preliminary dust removal of one-level dust collector and cooling is through the smart dust removal of sack cleaner once more, reduces equipment transformation cost, and the maintenance cost is low.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. Multistage cyclone dust collector, its characterized in that: one-level dust collector and a plurality of second grade dust collector (8) including the pipe connection, one-level dust collector includes casing (1), the upper portion of casing (1) is connected with air-supply line (2), be equipped with spiral baffle (3) in casing (1), spiral baffle (3) are in form spiral air duct in casing (1), set up the heat transfer passageway in spiral baffle (3), the top of casing (1) is equipped with out tuber pipe (4), it is a plurality of to go out tuber pipe (4) second grade dust collector (8) pipe connection, dust exhaust mouth (5) have been seted up to casing (1) bottom, and high temperature dusty gas flows in spiral air duct, and heat transfer medium flows in the heat transfer passageway.

2. The multi-cyclone dust removing apparatus as set forth in claim 1, wherein: spiral baffle (3) include a plurality of strip arc (31), all set up the cavity in strip arc (31), it is a plurality of strip arc (31) concatenation forms overall structure, and adjacent cavity communicates the formation in proper order the heat transfer passageway, the upper end of spiral baffle (3) with casing (1) top fixed connection.

3. The multi-cyclone dust removing apparatus as set forth in claim 1, wherein: the air inlet pipe (2) is close to the top of the shell (1) and is connected with the shell (1) along the tangential direction.

4. The multi-cyclone dust removing apparatus as set forth in claim 2, wherein: the dust exhaust device is characterized by further comprising a medium inlet pipe (6) and a medium outlet pipe (7), wherein the medium outlet pipe (7) is communicated with the cavity on the outermost side and penetrates out of the top of the shell (1), and the medium inlet pipe (6) is communicated with the cavity on the innermost side and penetrates out of the dust exhaust port (5).

5. The multi-cyclone dust removing apparatus as set forth in claim 1, wherein: the lower part of the shell (1) is contracted towards the center to form an inverted cone, and the dust exhaust port (5) is positioned at the top of the cone.

6. The multi-cyclone dust removing apparatus as set forth in claim 1, wherein: the outer wall of the shell (1) is provided with a heat insulation layer (11).

7. The multi-cyclone dust removing apparatus as set forth in claim 1, wherein: the secondary dust removal device (8) comprises a bag-type dust remover.