CN215462891U - Wet-type rod coal mill is exhaust treatment system for machine - Google Patents
Wet-type rod coal mill is exhaust treatment system for machine Download PDFInfo
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- CN215462891U CN215462891U CN202121503251.3U CN202121503251U CN215462891U CN 215462891 U CN215462891 U CN 215462891U CN 202121503251 U CN202121503251 U CN 202121503251U CN 215462891 U CN215462891 U CN 215462891U
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Abstract
The utility model provides a waste gas treatment system for a wet rod coal mill, which comprises a suction fan, a liquid separation tank, a coal grinding water pump, a fine slag filter and a slag hopper; the input end of the suction fan is connected with the output end of the rod coal mill barrel, the output end of the suction fan is communicated with an air inlet pipe, and the air inlet pipe extends into the liquid separating tank from top to bottom; the liquid separation tank also comprises a first output end and a second output end; the input end of the coal grinding water pump is communicated with the second output end through a pipeline, and the output end of the coal grinding water pump is communicated with the input end of a fine slag filter; the fine slag filter comprises a third output end and a fourth output end; the third output end is positioned at the bottom of the fine slag filter and is communicated with a filtrate collecting system; the fourth output end is communicated with a slag hopper and is positioned at the upper part of the slag hopper; the bottom of the slag hopper is provided with a slag filtering hole. The utility model can effectively remove dust and water vapor in the waste gas. The utility model can effectively remove dust and water vapor in the waste gas.
Description
Technical Field
The utility model belongs to the technical field of waste gas treatment, and particularly relates to a waste gas treatment system for a wet rod coal mill.
Background
In the pulping process of the wet-type rod coal mill, a large amount of dust and water vapor are generated in the cylinder body of the rod coal mill, and the suction fan is required to exhaust outwards to keep the cylinder body of the rod coal mill at a micro negative pressure, so that the operation conditions inside the drum screen and the cylinder body of the rod coal mill can be observed through the observation port. In the prior art, waste gas discharged by the suction fan is directly discharged through a high point, dust in the waste gas influences the sanitation of the surrounding environment at a discharge port after long-time operation, and the corrosion and the aging of nearby equipment and instruments are aggravated by mixing with part of dust after water vapor in the waste gas is condensed.
Disclosure of Invention
The utility model aims to provide an exhaust gas treatment system for a wet rod coal mill, which can effectively remove dust and water vapor in exhaust gas. In order to achieve the purpose, the utility model adopts the following technical scheme:
an effluent treatment system for a wet rod coal mill, comprising:
the input end of the suction fan is connected with the output end of the rod coal mill barrel, the output end of the suction fan is communicated with an air inlet pipe, and the air inlet pipe extends into the liquid separating tank from top to bottom;
the liquid separation tank also comprises a first output end and a second output end;
the input end of the coal grinding water pump is communicated with the second output end through a pipeline, and the output end of the coal grinding water pump is communicated with the input end of a fine slag filter;
the fine slag filter comprises a third output end and a fourth output end; the third output end is positioned at the bottom of the fine slag filter and is communicated with a filtrate collecting system; the fourth output end is communicated with a slag hopper and is positioned at the upper part of the slag hopper;
the slag hopper, the bottom of slag hopper is seted up one and is strained the sediment hole.
Preferably, the nozzle of the air inlet pipe is arranged obliquely.
Preferably, the air inlet duct is made of 304 stainless steel.
Preferably, the height difference between the first output end and the top of the liquid separation tank is a preset height.
Preferably, a valve is arranged on a pipeline between the coal grinding water pump and the second output end.
Preferably, a valve is arranged between the suction fan and the rod mill.
Compared with the prior art, the utility model has the advantages that: the dust and the water-vapor mixture (waste gas) generated in the coal mill cylinder are discharged into the liquid separation tank through the suction fan. After waste gas containing dust and water vapor enters the liquid separation tank, the flow speed of the waste gas is reduced, the flow direction is changed, the dust naturally settles, and part of water vapor with the water vapor temperature lower than the dew point temperature is condensed to form condensate. Wherein the condensate and the dust separated by sedimentation are mixed together to form black water with higher solid content, and the black water is pumped to a fine residue filter by a coal grinding water pump for filtering. After vacuum filtration of the fine slag filter, cleaner filtrate enters an ash water system for recycling, and fine slag after filtration is sent to a slag field; high-point emptying is carried out without condensing steam.
Drawings
Fig. 1 is a block diagram of an exhaust gas treatment system for a wet coal rod mill according to an embodiment of the present invention.
Wherein, the device comprises 1-a rod coal mill barrel, 2-a suction fan, 3-a liquid separation tank, 4-a coal grinding water pump, 5-a fine slag filter, 6-a slag hopper and 7-a filtrate collection system.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying schematic drawings, in which preferred embodiments of the utility model are shown, it being understood that one skilled in the art may modify the utility model herein described while still achieving the advantageous effects of the utility model. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the utility model.
As shown in fig. 1, an exhaust gas treatment system for a wet rod coal mill includes: the device comprises a suction fan 2, a liquid separating tank 3, a coal grinding water pump 4, a fine slag filter 5 and a slag hopper 6 which are connected in sequence through pipelines.
Specifically, the input end of the extraction fan 2 is connected with the output end of the rod coal mill barrel 1, and a valve is arranged between the extraction fan 2 and the rod coal mill; the output end of the suction fan 2 is communicated with an air inlet pipe, and the air inlet pipe extends into the liquid separation tank 3 from top to bottom. In the embodiment, the air inlet pipe is inserted into the tank 3 for 1.5m, and the pipe orifice is cut by inclining 45 degrees so as to reduce the impact of the waste gas flow on the bottom of the branch tank 3; the inlet pipe is made of 304 stainless steel to prevent dew point corrosion.
The liquid separation tank 3 also comprises a first output end and a second output end; the input end of the coal grinding water pump 4 is communicated with the second output end through a pipeline, a valve is arranged on the pipeline, and the valve is opened after the precipitation and condensation in the liquid separating tank 3 are carried out for a period of time; the output end of the coal grinding water pump 4 is communicated with the input end of a fine slag filter 5. Preferably, the height difference between the first output end and the top of the liquid separation tank 3 is a preset height, and the preset height is smaller, namely, the first output end for emptying is positioned at the upper part of the liquid separation tank 3, so that dust in the waste gas is fully precipitated, and partial water vapor with the temperature lower than the dew point temperature is fully condensed. Wherein the first output end is used for emptying the residual uncondensed water vapor.
The fine slag filter 5 comprises a third output end and a fourth output end; the third output end is positioned at the bottom of the fine slag filter 5 and is communicated with a filtrate collecting system 7, and the filtrate automatically flows into the filtrate collecting system 7 for recycling; wherein the filtrate collecting system 7 is a grey water collecting system or a collecting box; the fourth output end is communicated with a slag hopper 6 and is positioned at the upper part of the slag hopper 6; a slag filtering hole is formed in the bottom of the slag hopper 6, filtered fine slag falls into the slag hopper 6 by means of dead weight and flows out of the slag hopper 6 through the slag filtering hole of the slag hopper 6, and the fine slag is sent out to a slag yard through a vehicle at regular intervals.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. An effluent treatment system for a wet rod coal mill, comprising:
the input end of the suction fan is connected with the output end of the rod coal mill barrel, the output end of the suction fan is communicated with an air inlet pipe, and the air inlet pipe extends into the liquid separating tank from top to bottom;
the liquid separation tank also comprises a first output end and a second output end;
the input end of the coal grinding water pump is communicated with the second output end through a pipeline, and the output end of the coal grinding water pump is communicated with the input end of a fine slag filter;
the fine slag filter comprises a third output end and a fourth output end; the third output end is positioned at the bottom of the fine slag filter and is communicated with a filtrate collecting system; the fourth output end is communicated with a slag hopper and is positioned at the upper part of the slag hopper;
the slag hopper, the bottom of slag hopper is seted up one and is strained the sediment hole.
2. The exhaust gas treatment system for a wet rod coal mill according to claim 1, wherein the opening of the air inlet pipe is disposed obliquely.
3. The exhaust gas treatment system for a wet rod coal mill according to claim 1, wherein the inlet pipe is made of 304 stainless steel.
4. The exhaust gas treatment system for a wet rod coal mill according to claim 1, wherein a height difference between the first output end and a top of the liquid separation tank is a preset height.
5. The exhaust gas treatment system for a wet rod coal mill according to claim 1, wherein a valve is provided in a pipe between the coal grinding water pump and the second output end.
6. The exhaust gas treatment system for a wet coal rod mill as claimed in claim 1, wherein a valve is provided between the suction fan and the coal rod mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121503251.3U CN215462891U (en) | 2021-07-02 | 2021-07-02 | Wet-type rod coal mill is exhaust treatment system for machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121503251.3U CN215462891U (en) | 2021-07-02 | 2021-07-02 | Wet-type rod coal mill is exhaust treatment system for machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215462891U true CN215462891U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121503251.3U Active CN215462891U (en) | 2021-07-02 | 2021-07-02 | Wet-type rod coal mill is exhaust treatment system for machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215462891U (en) |
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2021
- 2021-07-02 CN CN202121503251.3U patent/CN215462891U/en active Active
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