CN218146203U - Coal gas washing water recovery device - Google Patents
Coal gas washing water recovery device Download PDFInfo
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- CN218146203U CN218146203U CN202222845580.7U CN202222845580U CN218146203U CN 218146203 U CN218146203 U CN 218146203U CN 202222845580 U CN202222845580 U CN 202222845580U CN 218146203 U CN218146203 U CN 218146203U
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- aeration
- washing water
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- gas washing
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Abstract
The utility model belongs to the technical field of gas washing water treatment, specifically disclose a gas washing water recovery unit, including aeration mechanism, sediment mechanism and pressure filter, aeration mechanism includes aeration tank and aeration unit, and sediment mechanism includes settling cask and stirring unit, is provided with the inlet on the aeration tank, and the lower part of aeration tank is provided with the liquid outlet, and settling cask upper portion is provided with into liquid mouth and charge door, and the lower part of settling cask is provided with the leakage fluid dram, is connected with first defeated material portion on the aeration tank, and the settling cask is connected with the defeated material portion of second, and the aeration unit includes aeration subassembly and air feed subassembly, and the pressure filter intercommunication has the water tank. Impurities in the coal gas washing water are removed by an aeration and precipitation method, the treated washing water is recycled, the recycling of new washing water is realized, and the treatment process of the coal gas washing water is reduced; the utility model solves the technical problem that the prior method for treating the coal gas washing water is complex.
Description
Technical Field
The utility model relates to a gas washing water treatment technology field, concretely relates to gas washing water recovery unit.
Background
The coal gas washing water is waste water generated in the coal chemical production process, is high-concentration organic waste water with extremely complex pollutant components and more difficultly-degraded substances, and contains various pollutants such as oil, phenols, cyanides, sulfides and the like. Although the oil pollutants do not belong to pollutants preferentially controlled in China, the oil pollutants also belong to pollutants difficult to treat in the treatment of wastewater in the coal chemical industry, and if the oil pollutants are not treated well, the normal operation of a subsequent treatment unit can be influenced.
The existing method for treating the gas washing water is to remove hazardous substances in the gas washing water by a carbonization method, but Ca (HCO) is used for treating the gas washing water by the carbonization method 3 ) Is extremely unstable and can easily be interpreted as CO evolution 2 This method is troublesome because the treated water contains a large amount of Ca ions and cannot be used as it is, and a softening step is required to remove Ca ions.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas washing water recovery unit to solve the comparatively complicated technical problem of current method of handling gas washing water.
In order to achieve the above object, the utility model provides a basic scheme does: the utility model provides a gas washing water recovery unit, includes aeration mechanism, deposits mechanism and pressure filter, aeration mechanism includes aeration tank and aeration unit, it includes the settling cask and is used for stirring the stirring unit of the interior gas washing water of settling cask to deposit the mechanism, be provided with the inlet on the aeration tank, the lower part of aeration tank is provided with the liquid outlet, settling cask upper portion is provided with into liquid mouth and charge door, the lower part of settling cask is provided with the leakage fluid dram, be connected with the first defeated material portion that is used for communicateing the liquid outlet and goes into the liquid mouth on the aeration tank, the settling cask is connected with the defeated material portion of second that is used for carrying the gas washing water in to the pressure filter, the aeration unit is including setting up the aeration subassembly in the aeration tank and providing CO to the aeration subassembly 2 The filter press is communicated with a water tank.
The utility model discloses a principle and beneficial effect lie in: introducing the gas washing water after cleaning the gas into the aeration tank from the liquid inlet, stopping injecting after introducing a certain degree, sealing the gas washing water pipeline, and supplying CO into the aeration component through the gas supply component 2 Aerating the aeration tank by the aeration component to ensure that CO in the gas washing water 2 Saturating, aerating for at least thirty minutes, delivering the aerated gas washing water into a settling tank from a feed inlet through a first delivery part, adding a polyacrylamide solution from the feed inlet to contact with the gas washing water, mixing the polyacrylamide solution with the gas washing water through a stirring unit to precipitate the solution, stirring for a period of time, introducing the solution into a filter press through a second delivery part for filtering, filtering out the precipitate, delivering the filtered washing water into a water tank for storage, and filling excessive CO into the gas washing water 2 Gas, make gas wash CO in water 2 The gas is in a saturated state, then the aerated gas washing water is mixed with polyacrylamide solution to generate precipitate, the precipitate in the gas washing water is filtered out by a filter press, and impurities in the gas washing water are removed by the aeration and precipitation methodThe treated washing water is recycled, so that the new washing water is recycled, the water resource is saved, the waste of the water resource is reduced, the treatment process of the coal gas washing water is reduced, and the treatment of the coal gas washing water is simplified.
Scheme two, this is the preferred of basic scheme, first defeated material portion is including the drain pipe of connection on the liquid outlet, be provided with the valve on the drain pipe, the drain pipe is connected with the circulating pump, the circulating pump intercommunication goes into the liquid mouth.
Scheme three, this is the preferred of basic scheme, the second defeated material portion is including setting up the valve of drain outlet department and the defeated material pump of being linked together with the valve, defeated material pump intercommunication pressure filter.
In a fourth aspect of the present invention, the aeration assembly preferably includes an air inlet disposed at a lower portion of the aeration tank and an aeration pipe fixed in the aeration tank and communicating with the air inlet.
And a fifth scheme is the optimization of the fourth scheme, the aeration pipe comprises an aeration main pipe communicated with the air inlet and aeration branch pipes communicated with the aeration main pipe, and a plurality of air nozzles are uniformly arranged on the aeration branch pipes.
And a sixth scheme is preferable to the fifth scheme, wherein the gas supply assembly comprises a gas outlet pipe and a gas mixing chamber which are arranged on the aeration tank, the gas outlet pipe is communicated with the gas mixing chamber, and the gas mixing chamber is connected with CO 2 And the gas mixing chamber is communicated with the gas inlet.
And a seventh scheme, which is the optimization of any one of the first scheme to the sixth scheme, wherein the stirring unit comprises a stirring shaft rotatably connected to the settling tank and a helical blade arranged on the stirring shaft, and the stirring shaft is sealed with the wall of the settling tank.
Drawings
FIG. 1 is a schematic structural view of a gas washing water recovery device of the present invention;
FIG. 2 is a schematic structural view of an aeration tank in the gas washing water recovery device of the present invention;
FIG. 3 is a schematic view of the structure of a settling tank in the gas washing water recovery device of the present invention;
fig. 4 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A in fig. 2.
Detailed Description
The present invention is described in further detail below with reference to specific embodiments:
reference numerals in the drawings of the specification include: the aeration tank 101, an air inlet 102, an aeration pipe 103, an aeration main pipe 1031, an aeration branch pipe 1032, an air nozzle 1033, an air outlet pipe 104, an air mixing chamber 105, an liquid inlet 106, a liquid outlet 107, a liquid outlet pipe 108, a circulating pump 109, a settling tank 201, a liquid inlet 202, a liquid outlet 203, a material conveying pump 204, a stirring shaft 205, a spiral blade 206, a feeding port 207 and a filter press 3.
As shown in fig. 1-4: a gas washing water recovery device comprises a water tank for temporarily storing gas washing water and filling CO into the gas washing water 2 And a precipitation means for precipitating the gas washing water after aeration, wherein the aeration means comprises an aeration tank 101 and a means for continuously introducing CO into the aeration tank 101 2 The aeration unit comprises a settling tank 201 and a stirring unit used for stirring coal gas washing water in the settling tank 201, the aeration tank 101 is communicated with the settling tank 201, the settling tank 201 is communicated with a pressure filter 3, the pressure filter removes and filters out purified water from the sediment in the coal gas washing water in the settling tank 201, and the purified water is led to a water tank for storing the washing water and is collected.
The aeration unit consists of an aeration assembly arranged in the aeration tank 101 and CO is provided for the aeration assembly 2 The aeration component comprises an air inlet 102 arranged at the lower part of the aeration tank 101 and an aeration pipe 103 fixed in the aeration tank 101, wherein the aeration pipe 103 comprises an aeration main pipe 1031 communicated with the air inlet 102 and an aeration branch pipe 1032 communicated with the aeration main pipe 1031, the aeration branch pipe 1032 is spirally arranged, and a plurality of air nozzles 1033 are uniformly arranged on the aeration branch pipe 1032.
The gas supply component comprises a gas outlet pipe 104 and a gas mixing chamber 105 which are arranged on the top of the aeration tank 101, the outlet end of the gas outlet pipe 104 is communicated in the gas mixing chamber 105, the gas outlet pipe 104 is provided with a one-way valve 110, the flowing direction of the gas in the gas outlet pipe 104 is limited by the one-way valve 110, and the gas mixing chamber 105 is connected with CO 2 The gas tank, the gas mixing chamber 105 communicates with the gas inlet 102.
A liquid inlet 202 is formed in one side of the upper portion of the settling tank 201, the liquid inlet 202 is communicated with the circulating pump 109, a feeding port 207 for adding a polyacrylamide solution is formed in the other side of the upper portion of the settling tank 201, a liquid outlet 203 is formed in the lower portion of the settling tank 201 in a conical shape, a valve is arranged on the liquid outlet 203 and connected with a material conveying pump 204, and the material conveying pump 204 conveys the solution in the settling tank 201 to the filter press 3 for filtering to form a second material conveying portion.
The stirring unit comprises a stirring shaft 205 arranged in the middle of the top of the settling tank 201 and a helical blade 206 arranged on the stirring shaft 205, the stirring shaft 205 penetrates through the top of the settling tank 201 and is sealed between the walls of the settling tank 201, in the embodiment, a mechanical sealing mode is adopted for sealing to avoid solution seepage, and the stirring shaft 205 is connected with a motor outside the settling tank 201 and drives the stirring shaft 205 through the motor.
The implementation mode of the scheme is as follows: introducing the gas washing water after cleaning the gas into the aeration tank 101 from the liquid inlet 106, stopping injecting after a certain degree, sealing the gas washing water pipeline, and opening CO 2 The gas tank converts CO 2 Introduced into the main aeration pipe 1031, passed through the branch aeration pipe 1032, ejected from the gas nozzle 1033 into the aeration tank 101, and contacted with the gas washing water to make CO in the gas washing water 2 The saturation and inflation process lasts at least thirty minutes, and in the process, the redundant gas is discharged from the gas outlet pipe 104 into the gas mixing chamber 105 and is mixed with CO 2 CO in gas cylinders 2 The mixture is introduced into the main aeration pipe 1031 again to reduce CO 2 After at least thirty minutes of aeration, the valve at the bottom of the aeration tank 101 and the circulating pump 109 are opened to introduce the aerated gas washing water into the settling tank 201, then the valve and the circulating pump 109 are closed, and the next batch of gas washing water is introduced into the aeration tank 101 again for aeration again.
Adding a polyacrylamide solution into the settling tank 201 through a feed inlet 207 to be contacted with the coal gas washing water, starting a motor to drive a stirring shaft 205 to rotate, mixing the polyacrylamide solution with the coal gas washing water to generate a precipitate, stirring for a period of time, opening a valve and a material conveying pump 204, introducing the precipitated coal gas washing water into a pressure filter 3 through the material conveying pump 204 for filtering, filtering out the precipitate, and conveying the filtered washing water into a water tank for storage.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. The gas washing water recovery device is characterized by comprising an aeration mechanism, a precipitation mechanism and a pressure filter (3), wherein the aeration mechanism comprises an aeration tank (101) and an aeration unit, the precipitation mechanism comprises a settling tank (201) and a stirring unit for stirring gas washing water in the settling tank (201), a liquid inlet (106) is formed in the aeration tank (101), a liquid outlet (107) is formed in the lower portion of the aeration tank (101), a liquid inlet (202) and a feeding port (207) are formed in the upper portion of the settling tank (201), a liquid outlet (203) is formed in the lower portion of the settling tank (201), a first material conveying portion for communicating the liquid outlet (107) with the liquid inlet (202) is connected to the aeration tank (101), a second material conveying portion for conveying the gas washing water to the pressure filter (3) is connected to the settling tank (201), and the aeration unit comprises an aeration assembly arranged in the aeration tank (101) and a CO supply assembly 2 The filter press (3) is communicated with a water tank.
2. The gas washing water recycling device of claim 1, wherein the first material transporting portion comprises a liquid outlet pipe (108) connected to the liquid outlet (107), a valve is disposed on the liquid outlet pipe (108), a circulating pump (109) is connected to the liquid outlet pipe (108), and the circulating pump (109) is communicated with the liquid inlet (202).
3. The gas washing water recovery device according to claim 1, wherein the second feed delivery part comprises a valve at the liquid discharge port (203) and a feed delivery pump (204) communicated with the valve, and the feed delivery pump (204) is communicated with the filter press (3).
4. The gas washing water recovery device according to claim 1, wherein the aeration assembly includes an air inlet (102) provided at a lower portion of the aeration tank (101) and an aeration pipe (103) fixed within the aeration tank (101) and communicating with the air inlet (102).
5. The gas washing water recovery device according to claim 4, wherein the aeration pipe (103) comprises an aeration main pipe (1031) communicated with the gas inlet (102) and an aeration branch pipe (1032) communicated with the aeration main pipe (1031), and a plurality of gas nozzles (1033) are uniformly arranged on the aeration branch pipe (1032).
6. The gas washing water recovery device of claim 5, wherein the gas supply assembly comprises a gas outlet pipe (104) and a gas mixing chamber (105) which are arranged on the aeration tank (101), the gas outlet pipe (104) is communicated with the gas mixing chamber (105), and the gas mixing chamber (105) is connected with CO 2 A gas tank, the gas mixing chamber (105) being in communication with the gas inlet (102).
7. The gas washing water recovery device according to any of claims 1 to 6, wherein the stirring unit comprises a stirring shaft (205) rotatably connected to the settling tank (201) and a helical blade (206) arranged on the stirring shaft (205), and the stirring shaft (205) is sealed with the wall of the settling tank (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222845580.7U CN218146203U (en) | 2022-10-28 | 2022-10-28 | Coal gas washing water recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222845580.7U CN218146203U (en) | 2022-10-28 | 2022-10-28 | Coal gas washing water recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218146203U true CN218146203U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222845580.7U Active CN218146203U (en) | 2022-10-28 | 2022-10-28 | Coal gas washing water recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218146203U (en) |
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2022
- 2022-10-28 CN CN202222845580.7U patent/CN218146203U/en active Active
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