CN217988732U - Waste gas treatment system for aluminum dihydrogen phosphate production line - Google Patents
Waste gas treatment system for aluminum dihydrogen phosphate production line Download PDFInfo
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- CN217988732U CN217988732U CN202222076860.6U CN202222076860U CN217988732U CN 217988732 U CN217988732 U CN 217988732U CN 202222076860 U CN202222076860 U CN 202222076860U CN 217988732 U CN217988732 U CN 217988732U
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Abstract
The utility model belongs to the technical field of exhaust-gas treatment, especially, relate to a waste-gas treatment system is produced to aluminium dihydrogen phosphate line. The system comprises a reaction kettle, wherein a feeding platform is arranged on the reaction kettle; the feeding platform is sequentially communicated with a dust-containing waste gas channel, a dust collector, a waste gas channel, an acid mist treatment tower, a standard gas channel and an exhaust pipe; also comprises an alkali liquor storage unit; the alkali liquor storage unit is communicated with the acid mist treatment tower. The utility model discloses a production line exhaust treatment system can effectively get rid of the waste gas that contains the dust that produces in the production process of aluminium dihydrogen phosphate.
Description
Technical Field
The utility model belongs to the technical field of exhaust-gas treatment, especially, relate to a waste-gas treatment system is produced to aluminium dihydrogen phosphate line.
Background
Aluminum dihydrogen phosphate is produced by heating a phosphoric acid solution to 85 deg.C, followed by the addition of 10 micron aluminum hydroxide powder. During the feeding process of the aluminum hydroxide, the aluminum hydroxide reacts with the phosphoric acid and releases heat, when the temperature of the solution reaches 110 ℃, hot steam (containing phosphoric acid mist in the hot steam) is generated, and meanwhile, a little aluminum hydroxide powder is carried by the hot steam to float upwards and enter an exhaust gas discharge pipeline. Therefore, the dust-containing waste gas needs to be further treated, and the gas can be discharged after reaching the standard. In the prior production of aluminum dihydrogen phosphate, a device for further treating waste gas containing dust is lacked.
Therefore, how to provide a waste gas treatment system for a production line of aluminum dihydrogen phosphate to realize the discharge after the waste gas treatment reaches the standard is a technical problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an exhaust gas treatment system for aluminum dihydrogen phosphate production line, which is used to solve the problems in the prior art.
The utility model provides a waste gas treatment system for an aluminum dihydrogen phosphate production line, which comprises a reaction kettle, wherein a feeding platform is arranged on the reaction kettle; the feeding platform is communicated with a dust-containing waste gas channel, a dust collector, a waste gas channel, an acid mist treatment tower, a standard gas channel and an exhaust pipe in sequence; also comprises an alkali liquor storage unit; the alkali liquor storage unit is communicated with the acid mist treatment tower.
In some embodiments of the present invention, the reaction vessel comprises a reaction material inlet; the bottom of the charging platform is provided with a reaction kettle communicating port, and the reaction kettle communicating port is communicated with the reaction material inlet.
In some embodiments of the present invention, the top of the charging platform is provided with a dust-containing waste gas outlet; the dust-containing waste gas outlet is communicated with the dust-containing waste gas channel.
The utility model discloses an in some embodiments, reinforced platform includes the charge door, charge door department still is equipped with material place the platform.
In some embodiments of the present invention, a stirrer is disposed in the reaction kettle.
In some embodiments of the invention, the dust collector comprises a dust-containing exhaust gas inlet and an exhaust gas outlet; the dust waste gas inlet is communicated with the dust-containing waste gas channel; the exhaust gas outlet is communicated with the exhaust gas channel.
In some embodiments of the present invention, the dust collector comprises a plurality of filters, each of the filters being in communication with the dust-containing exhaust gas inlet and the exhaust gas outlet, respectively; a dust outlet is formed in the bottom of the filter; the dust collector also comprises a dust hopper, and the dust outlet is communicated with the dust hopper.
In some embodiments of the present invention, the acid mist treatment tower comprises a waste gas inlet and a standard gas outlet; the waste gas inlet is communicated with the waste gas channel; the standard gas outlet is communicated with the standard gas channel.
In some embodiments of the present invention, a packing layer is disposed in the acid mist treatment tower; the height of the waste gas inlet is lower than that of the packing layer.
In some embodiments of the present invention, the side wall of the acid mist treatment tower is provided with an alkali liquor inlet; the height of the alkali liquor inlet is higher than that of the waste liquor inlet; the height of the alkali liquor inlet is lower than that of the standard gas outlet.
In some embodiments of the present invention, a pump is disposed on the communicating pipe between the alkali solution storage unit and the acid mist treatment tower.
Compared with the prior art, the technical scheme has the following beneficial effects:
the utility model discloses in the aluminium dihydrogen phosphate production line exhaust-gas treatment system, the waste gas that contains the dust that produces in the production process of aluminium dihydrogen phosphate passes through the dust arrester and gets rid of aluminium hydroxide powder, removes the phosphoric acid fog through the acid mist treatment tower to the effective getting rid of the waste gas that contains the dust has been realized. And also can effectively avoid the condition that the powder body drifted outside in reinforced in-process at reinforced platform's unique design, greatly reduced dust pollution also can prevent simultaneously that the operation personnel from receiving the steam scald at reinforced in-process.
Drawings
FIG. 1 shows the schematic structural diagram of the waste gas treatment system of the aluminum dihydrogen phosphate production line of the present invention.
Reference numerals
1. Reaction kettle
101. Reaction material inlet
102. Stirrer
2. Charging platform
201. Communicating port of reaction kettle
202. Dust-containing waste gas outlet
203. Feed inlet
204. Material placing platform
205. First cover body
206. Second cover body
3. Dust-containing waste gas channel
4. Dust collector
401. Dust and waste gas inlet
402. Exhaust outlet
403. Dust outlet
404. Dust collecting bucket
5. Exhaust gas channel
6. Acid mist treatment tower
601. Waste gas inlet
602. Gas outlet reaching standard
603. Packing layer
604. Alkali liquor inlet
7. Standard gas passage
8. Exhaust pipe
9. Alkali liquor storage unit
10. Pump and method of operating the same
Detailed Description
In the description of the present invention, it should be noted that the structure, ratio, size, etc. shown in the attached drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by the people familiar with the technology, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the ratio relationship or the adjustment of the size should still fall within the range that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that can be achieved. While the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations or positional relationships illustrated in the drawings, which are used for convenience in describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, an embodiment of the utility model provides a waste gas treatment system for an aluminum dihydrogen phosphate production line, which comprises a reaction kettle 1, wherein a feeding platform 2 is arranged on the reaction kettle 1; the charging platform 2 is communicated with a dust-containing waste gas channel 3, a dust collector 4, a waste gas channel 5, an acid mist treatment tower 6, a standard gas channel 7 and an exhaust pipe 8 in sequence; also comprises an alkali liquor storage unit 9; the alkali liquor storage unit 9 is communicated with the acid mist treatment tower 6. The utility model discloses an among the aluminium dihydrogen phosphate production line exhaust treatment system, the dust-containing waste gas that produces from the reinforced in-process of reinforced platform 2 gets into dust collector 4 through containing dust exhaust gas passageway 3 and gets into the aluminium hydroxide powder, and the waste gas that contains the phosphoric acid fog passes through exhaust gas passageway 5 afterwards and gets into acid mist treating tower 6 and get rid of back up to standard gas through spraying alkali lye and discharge in getting into blast pipe 8 through up to standard gas passageway 7.
In the waste gas treatment system of the aluminum dihydrogen phosphate production line provided by the embodiment of the utility model, the reaction kettle 1 comprises a reaction material inlet 101; the bottom of the charging platform 2 is provided with a reaction kettle communicating opening 201, and the reaction kettle communicating opening 201 is communicated with the reaction material inlet 101. The reaction material enters the inner cavity of the reaction kettle 1 through the reaction kettle communicating opening 201 of the feeding platform 2 via the reaction material inlet 101 for reaction. For example, aluminum dihydrogen phosphate is produced by heating a phosphoric acid solution to 85 ℃ and subsequently adding aluminum hydroxide powder through the feeding stage 2.
In the waste gas treatment system for the aluminum dihydrogen phosphate production line provided by the embodiment of the utility model, the top of the charging platform 2 is provided with a dust-containing waste gas outlet 202; the dust-containing off-gas outlet 202 communicates with the dust-containing off-gas channel 3. During the feeding of the aluminium hydroxide, it reacts with the phosphoric acid and gives off heat, when the solution reaches 110 ℃, hot vapor (containing phosphoric acid mist in the hot vapor) is generated, and at the same time, the hot vapor carries a little aluminium hydroxide powder into the dust-containing waste gas channel 3 through the dust-containing waste gas outlet 202.
The embodiment of the utility model provides an among the aluminium dihydrogen phosphate production line exhaust treatment system, reinforced platform 2 includes charge door 203, charge door 203 department still is equipped with material place the platform 204. In some embodiments, the material placement platform 204 is level with the bottom height of the feed opening 203. When the material placing platform 204 is convenient for feeding, the material to be fed is placed on the material placing platform 204. The height of the material placing platform 204 is higher than that of the communicating opening 201 of the reaction kettle. The reaction kettle further comprises a first cover body 205 used for covering the feed inlet 203 and a second cover body 206 used for covering the communication port 201 of the reaction kettle. After the material passed through charge door 203 and got into with the feed bin, further got into reation kettle 1 through reation kettle intercommunication mouth 201, can prevent like this that steam from spilling over the scald staff with trade, can control feed rate moreover. When the second cover body 206 and the first cover body 205 are covered, in the feeding process into the reaction kettle 1, a large amount of aluminum hydroxide powder can drift outwards along with hot steam from the feeding hole of the reaction kettle 1, drift to the feeding bin through the reaction kettle communicating port 201, and the dust is pumped away from the dust-containing waste gas outlet 202.
The embodiment of the utility model provides an among the aluminium dihydrogen phosphate production line exhaust-gas treatment system that provides, be equipped with agitator 102 in reation kettle 1. During the material mixing reaction in the reaction vessel 1, the stirring reaction is performed by the stirrer 102.
In the waste gas treatment system for the aluminum dihydrogen phosphate production line provided by the embodiment of the utility model, the dust collector 4 comprises a dust-containing waste gas inlet 401 and a waste gas outlet 402; the dust exhaust gas inlet 401 is communicated with the dust-containing exhaust gas channel 3; the exhaust gas outlet 402 communicates with the exhaust gas passage 5.
In the waste gas treatment system of the aluminum dihydrogen phosphate production line provided by the embodiment of the utility model, the dust collector 4 comprises a plurality of filters, and each filter is respectively communicated with a dust-containing waste gas inlet 401 and a waste gas outlet 402; the bottom of the filter is provided with a dust outlet 403; the dust collector 4 further includes a dust hopper 404, and the dust outlet 403 is communicated with the dust hopper 404. The dust hopper 404 facilitates collection of the filtered dust.
In some embodiments, the dust collector 4 includes two filter cartridge filters made of polyester fiber oil-proof and water-proof materials, the filtration precision of the dust with an equivalent diameter of more than 3 μm reaches more than 99%, and the dust in the filter cartridges falls into the dust hopper 404, so as to remove the aluminum hydroxide powder. Specifically, the dust collector 4 may be selected from, for example, model MCJC-1500, available from Shanghai full wind environmental protection technologies, inc.
In the waste gas treatment system for the aluminum dihydrogen phosphate production line provided by the embodiment of the utility model, the acid mist treatment tower 6 comprises a waste gas inlet 601 and a standard gas outlet 602; the exhaust gas inlet 601 is communicated with the exhaust gas passage 5; the standard gas outlet 602 is communicated with the standard gas passage 7.
In the waste gas treatment system of the aluminum dihydrogen phosphate production line provided by the embodiment of the utility model, a packing layer 603 is arranged in the acid mist treatment tower 6; the height of the exhaust gas inlet 601 is lower than that of the packing layer 603. An alkali liquor inlet 604 is formed in the side wall of the acid mist treatment tower 6; the height of the alkali liquor inlet 604 is higher than that of the waste gas inlet 601; the height of the lye inlet 604 is lower than the height of the standard gas outlet 602. The packing material 603 in the acid mist treatment tower 6 is a basic component in gas-liquid two-phase contact, waste gas enters the tower body and firstly enters the packing material 603, the top of the packing material 603 is sprayed with alkali liquor, a layer of liquid film is formed on the packing material, when the waste gas flows through the gaps of the packing material, the waste gas contacts the packing liquid film and carries out acid-base comprehensive reaction, and the packing material 603 can provide a large enough surface area and does not cause overlarge resistance to gas flow. In some embodiments, the filler may be, for example, a polypropylene rosette filler.
The utility model discloses an acid mist treatment tower 6 belongs to differential contact counterflow, and in some embodiments, acid mist treatment tower 6 can be selected from the guangdong to open green environmental protection engineering equipment limited company, model QL-SW1200 for example.
The embodiment of the utility model provides an among the aluminium dihydrogen phosphate production line exhaust-gas treatment system, alkali lye storage unit 9 with communicating pipe between the acid mist treatment tower 6 is equipped with pump 10 on the road. The alkali liquor stored in the alkali liquor storage unit 9 can enter the acid mist treatment tower 6 through the alkali liquor inlet 604 by the pump 10, and then enters the packing layer 603 for spraying the alkali liquor.
The embodiment of the utility model provides an among the aluminum dihydrogen phosphate production line exhaust treatment system, standard gaseous standard is that other particulate matters are less than or equal to 30mg/m 3 Phosphoric acid mist is less than or equal to 5mg/m 3 。
The utility model provides a production line exhaust-gas treatment system's of aluminium dihydrogen phosphate working process:
aluminum dihydrogen phosphate is produced by heating a phosphoric acid solution to 85 deg.C, followed by the addition of 10 micron aluminum hydroxide powder. In the feeding process of the aluminum hydroxide, the aluminum hydroxide reacts with phosphoric acid and releases heat, at the moment, the temperature of the solution reaches 110 ℃, hot steam (containing phosphoric acid mist in the hot steam) is generated, meanwhile, a small amount of aluminum hydroxide powder is entrained by the hot steam and flows upwards from a dust-containing waste gas outlet 202 of a feeding platform 2 to enter a dust-containing waste gas channel 3, the dust-containing waste gas enters a dust collector 4 through the dust-containing waste gas channel 3, the filtering precision of the dust with the equivalent diameter of more than 3 micrometers reaches more than 99%, the dust of a filter cylinder falls into a dust collecting hopper 404 to remove the aluminum hydroxide powder, then the waste gas containing the phosphoric acid mist enters an acid mist treatment tower 6 through a waste gas channel 5, the waste gas belongs to a differential contact countercurrent type, the filler in the tower body is a basic component in gas-liquid two-phase contact, the waste gas enters a filler layer 603 after entering the tower body, the filler layer 603 is provided with a top spraying alkali liquor from the top, a liquid film is formed on the filler, when the waste gas flows through filler gaps, the waste gas enters an acid mist liquid film to perform an acid-alkali comprehensive reaction, the filler layer 603, the filler layer can provide a large surface area, the gas flow, the gas cannot cause excessive resistance to gas flow, the waste gas in the gas exhaust pipe 7, and then the gas exhaust pipe 8 after the gas reaches the standard.
Table 1 is the utility model discloses well aluminium dihydrogen phosphate produces line exhaust-gas treatment system's detection data.
TABLE 1
| Aluminum hydroxide dust | Phosphoric acid mist | |
| Charging platform gas | 40.8mg/m 3 | 31.4mg/m 3 |
| Filter exhaust outlet gas | 3.7mg/m 3 | 27.9mg/m 3 |
| Exhaust pipe gas | 1.5mg/m 3 | 2.3mg/m 3 |
As shown in Table 1, the filter can effectively remove aluminum hydroxide dust in the waste gas, and the acid mist treatment tower can effectively remove phosphoric acid mist, so that the phosphoric acid mist reaches the emission standard.
To sum up, the utility model discloses in the aluminium dihydrogen phosphate production line exhaust treatment system, the waste gas that contains the dust that produces in the production process of aluminium dihydrogen phosphate passes through dust arrester 4 and detaches aluminium hydroxide powder, removes the phosphoric acid fog through acid mist treatment tower 6 to realized effectively getting rid of the waste gas that contains the dust. And also can effectively avoid the circumstances that the powder body drifted outward in reinforced in-process at reinforced platform 2's unique design, greatly reduced dust pollution also can prevent simultaneously that the operation personnel from receiving the steam scald in reinforced in-process. The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the claims of the present invention.
Claims (10)
1. The waste gas treatment system for the aluminum dihydrogen phosphate production line is characterized by comprising a reaction kettle (1), wherein a feeding platform (2) is arranged on the reaction kettle (1); the feeding platform (2) is communicated with a dust-containing waste gas channel (3), a dust collector (4), a waste gas channel (5), an acid mist treatment tower (6), a standard gas channel (7) and an exhaust pipe (8) in sequence; also comprises an alkali liquor storage unit (9); the alkali liquor storage unit (9) is communicated with the acid mist treatment tower (6).
2. The exhaust gas treatment system of the aluminum dihydrogen phosphate production line according to claim 1, wherein the reaction vessel (1) comprises a reactant inlet (101); the bottom of the feeding platform (2) is provided with a reaction kettle communicating opening (201), and the reaction kettle communicating opening (201) is communicated with the reaction material inlet (101).
3. The waste gas treatment system of the aluminum dihydrogen phosphate production line as set forth in claim 1, wherein the top of the charging platform (2) is provided with a dust-containing waste gas outlet (202); the dust-containing waste gas outlet (202) is communicated with the dust-containing waste gas channel (3).
4. The waste gas treatment system of the aluminum dihydrogen phosphate production line of claim 1, wherein the charging platform (2) comprises a charging opening (203), and a material placing platform (204) is further arranged at the charging opening (203);
and/or a stirrer (102) is arranged in the reaction kettle (1).
5. The exhaust gas treatment system of aluminum dihydrogen phosphate production line according to claim 1, wherein said dust collector (4) comprises a dust-containing exhaust gas inlet (401) and an exhaust gas outlet (402); the dust waste gas inlet (401) is communicated with the dust-containing waste gas channel (3); the exhaust gas outlet (402) communicates with an exhaust gas channel (5).
6. The exhaust gas treatment system of the aluminum dihydrogen phosphate production line of claim 5, wherein the dust collector (4) comprises a plurality of filters, each of which is respectively communicated with the dust-containing exhaust gas inlet (401) and the exhaust gas outlet (402); the bottom of the filter is provided with a dust outlet (403); the dust collector (4) further comprises a dust hopper (404), and the dust outlet (403) is communicated with the dust hopper (404).
7. The waste gas treatment system of the aluminum dihydrogen phosphate production line of claim 1, wherein the acid mist treatment tower (6) comprises a waste gas inlet (601) and a standard gas outlet (602); the exhaust gas inlet (601) is communicated with the exhaust gas channel (5); the standard gas outlet (602) is communicated with the standard gas channel (7).
8. The waste gas treatment system of the aluminum dihydrogen phosphate production line of claim 7, wherein the acid mist treatment tower (6) is provided with a packing layer (603); the height of the waste gas inlet (601) is lower than that of the filler layer (603).
9. The waste gas treatment system of the aluminum dihydrogen phosphate production line of claim 7, wherein the side wall of the acid mist treatment tower (6) is provided with an alkali liquor inlet (604); the height of the alkali liquor inlet (604) is higher than that of the waste gas inlet (601); the height of the alkali liquor inlet (604) is lower than that of the standard gas outlet (602).
10. The waste gas treatment system of the aluminum dihydrogen phosphate production line of claim 1, wherein a pump (10) is arranged on a communication pipeline between the alkali liquor storage unit (9) and the acid mist treatment tower (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222076860.6U CN217988732U (en) | 2022-08-08 | 2022-08-08 | Waste gas treatment system for aluminum dihydrogen phosphate production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222076860.6U CN217988732U (en) | 2022-08-08 | 2022-08-08 | Waste gas treatment system for aluminum dihydrogen phosphate production line |
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| CN217988732U true CN217988732U (en) | 2022-12-09 |
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| CN202222076860.6U Active CN217988732U (en) | 2022-08-08 | 2022-08-08 | Waste gas treatment system for aluminum dihydrogen phosphate production line |
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