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CN-121971938-A - Waste gas dust removing equipment

CN121971938ACN 121971938 ACN121971938 ACN 121971938ACN-121971938-A

Abstract

The exhaust gas dust removing device comprises a wet cyclone dust remover and a cyclone spray device, wherein the wet cyclone dust remover comprises a first frame body, a cyclone body and a spraying device, the cyclone body is arranged on the first frame body and is provided with a separation cavity, the cyclone body comprises a cylindrical part and an inverted cone part, the cylindrical part is arranged above the inverted cone part, the cylindrical part is provided with an exhaust port, the upper side of the cylindrical part is provided with the exhaust port, the lower side of the cone part is provided with an ash discharge port, exhaust gas enters the separation cavity from an air inlet and forms an outer cyclone to rotate downwards in the separation cavity, then forms an inner cyclone to rotate upwards under the reverse action of the inner wall of the inverted cone part until being discharged from the exhaust port, the spraying device is arranged on the cyclone body and is used for spraying in the separation cavity so as to enable dust in the exhaust gas to absorb water and settle, the cyclone dust is discharged from the ash discharge port, the cyclone spray device is communicated with the wet cyclone dust remover, and the exhaust gas of the wet cyclone dust remover is conveyed to the cyclone spray device, and the cyclone dust remover is used for further dust removing and demisting.

Inventors

  • ZENG GUOJIN
  • LIU HONGJUN
  • FAN CHEN
  • JIANG XIAOYU

Assignees

  • 南洋环境工程技术(惠州)有限公司

Dates

Publication Date
20260505
Application Date
20260130

Claims (10)

  1. 1. The utility model provides a high oily high viscosity waste gas dust collecting equipment which characterized in that includes wet cyclone dust collector and cyclone spray ware, the wet cyclone dust collector includes: A first frame body; The cyclone body is arranged on the first frame body and is provided with a separation cavity, the cyclone body comprises a cylindrical part and an inverted cone part, the cylindrical part is positioned above the inverted cone part, the cylindrical part is provided with an exhaust port, the upper side of the cylindrical part is provided with an exhaust port, the lower side of the cone part is provided with an ash discharge port, waste gas enters the separation cavity from the air inlet and forms an external cyclone flow to rotate downwards in the separation cavity, and then forms an internal cyclone flow to rotate upwards under the reverse action of the inner wall of the inverted cone part until being discharged from the exhaust port, and The spraying device is arranged in the cyclone body and is used for spraying the separation cavity so as to enable dust in the waste gas to absorb water and settle and be discharged from the ash discharge port; the cyclone sprayer is communicated with the wet cyclone dust collector, exhaust gas discharged by the wet cyclone dust collector is conveyed to the cyclone sprayer, and the cyclone sprayer is used for further dust removal and defogging of the conveyed exhaust gas.
  2. 2. The exhaust gas dust removing apparatus according to claim 1, wherein the cyclone body includes an air inlet portion forming the air inlet, and the air inlet pipe is disposed at a top of the cylindrical portion and is tangentially arranged with respect to the cylindrical portion.
  3. 3. The exhaust gas dust removing apparatus according to claim 1, wherein the cyclone body includes an air outlet portion forming the air outlet, the air outlet portion being located at a middle position of a top of the cylindrical portion and extending into the cylindrical portion to correspond to the internal rotation.
  4. 4. The flue gas dust removal apparatus of claim 1, wherein the wet cyclone further comprises a dust collection tank disposed directly under the cyclone body, the dust collection tank for collecting dust discharged from the dust discharge port.
  5. 5. The exhaust gas dust removing apparatus according to claim 1, wherein the spray liquid-gas ratio of the wet cyclone is 0.2 to 0.9L/m 3 .
  6. 6. The exhaust gas dust removing apparatus according to claim 1, wherein the cyclone sprayer includes a second frame, a screw body, a spray device and a demisting device, the screw body is provided to the second frame, the screw body has a screw channel which is screw-up, a lower end of the screw body is provided with an air inlet, an upper end of the screw body is provided with an air outlet, the air inlet is communicated with the air outlet, the spray device is used for spraying liquid into the screw channel so that the liquid contacts with the exhaust gas, dust in the exhaust gas is captured by the liquid, the air outlet is communicated with the demisting device, and the demisting device is used for performing steam-water separation on the conveyed exhaust gas.
  7. 7. The exhaust gas dust removing apparatus according to claim 6, wherein the demister device is provided with a spheroid disposed above the spiral body and communicating with the air outlet, and a water absorbing filler provided in the spheroid for absorbing soda in the exhaust gas passing through the spheroid.
  8. 8. The exhaust gas dust removing apparatus according to claim 6, wherein the air inlet is provided at a side surface of the screw body, a liquid outlet is further provided at a bottom of the screw body, and the liquid in the screw passage flows out of the screw body toward the liquid outlet under the action of self gravity.
  9. 9. The exhaust gas dust removing apparatus according to claim 6, wherein the air inlet is provided with an air-homogenizing structure for uniformly distributing the supplied exhaust gas into the spiral passage, and a filtering structure for filtering dust of larger particles in the supplied exhaust gas.
  10. 10. The exhaust gas dust removing apparatus as set forth in claim 6, wherein the cyclone sprayer further comprises a circulation tank provided below the spiral body and communicating with the liquid spraying device, the circulation tank being for collecting the liquid flowing out from the liquid outlet, dust-filtering the liquid, and transporting the filtered liquid to the liquid spraying device.

Description

Waste gas dust removing equipment Technical Field The application relates to the technical field of waste gas treatment, in particular to waste gas dust removal equipment suitable for high-oil-content high-viscosity waste gas. Background In the industrial production process, especially in the industries of metal forging processing, carbon powder treatment and the like, a large amount of high-oil-content high-viscosity waste gas containing iron filings, carbon powder, grease and other particles can be generated. The particle size of the particles is usually 10-1000 μm, and if the particles are directly discharged, serious pollution to the environment is caused. The traditional dry cyclone dust collector has limited removal efficiency of fine particles, and the common wet dust collector has the problems of large water consumption, easy blockage, unstable dust removal efficiency and the like. In the prior art, although the dust remover can improve the trapping efficiency through the action of a water film, the single process is difficult to reach the ideal emission standard. Therefore, there is a need for an exhaust gas dust removal apparatus that is compact in structure, high in dust removal efficiency, low in running cost, and convenient to maintain. Disclosure of Invention The application provides an exhaust gas dust removing device which comprises a wet cyclone dust remover and a cyclone spray device, wherein the wet cyclone dust remover comprises a first frame body, a cyclone body and a spraying device, the cyclone body is arranged on the first frame body and is provided with a separation cavity, the cyclone body comprises a cylindrical part and an inverted cone part, the cylindrical part is arranged above the inverted cone part, the cylindrical part is provided with an exhaust port, the upper side of the cylindrical part is provided with the exhaust port, the lower side of the cone part is provided with an ash discharge port, exhaust gas enters the separation cavity from the air inlet and forms an external cyclone flow to rotate downwards in the separation cavity, and then forms an internal cyclone flow to rotate upwards under the reverse action of the inner wall of the inverted cone part until the exhaust gas is discharged from the exhaust port, the spraying device is arranged in the cyclone body and is used for spraying in the separation cavity, so that dust in the exhaust gas is absorbed and settled, and is discharged from the ash discharge port, the cyclone spray device is communicated with the wet cyclone dust remover, and the exhaust gas discharged from the cyclone dust remover is conveyed to the cyclone dust remover, and the exhaust gas is further sprayed to the dust remover. In some embodiments, the cyclone body comprises an air inlet part, the air inlet part forms the air inlet, and the air inlet pipe is arranged at the top of the cylindrical part and is arranged in a tangential manner relative to the cylindrical part. In some embodiments, the cyclone body includes an air outlet portion, the air outlet portion forming the air outlet, the air outlet portion being located at a middle position of a top of the cylindrical portion and extending into the cylindrical portion to correspond to the internal rotation. In some embodiments, the wet cyclone further includes a dust collection groove disposed directly under the cyclone body, the dust collection groove for collecting dust discharged from the dust discharge port. In some embodiments, the spray liquid-gas ratio of the wet cyclone is 0.2-0.9L/m 3. In some embodiments, the cyclone sprayer comprises a second frame, a spiral body, a liquid spraying device and a demisting device, wherein the spiral body is arranged on the second frame, the spiral body is provided with a spiral channel with an upward spiral, an air inlet is formed in the lower end of the spiral body, an air outlet is formed in the upper end of the spiral body, the air inlet is communicated with the air outlet, the liquid spraying device is used for spraying liquid into the spiral channel so that the liquid contacts with the waste gas, dust in the waste gas is captured by the liquid, the air outlet is communicated with the demisting device, and the demisting device is used for separating steam from water of the conveyed waste gas. In some embodiments, the demister arrangement comprises a spheroid disposed above the spiral and in communication with the air outlet, and a water-absorbing filler disposed in the spheroid for absorbing the soda in the exhaust gas passing through the spheroid. In some embodiments, the air inlet is disposed on a side surface of the spiral body, a liquid outlet is further disposed at the bottom of the spiral body, and the liquid in the spiral channel flows out of the spiral body toward the liquid outlet under the action of self gravity. In some embodiments, the air inlet is provided with an air-homogenizing structure for uniformly distributing the conveyed exhaus