CN219929852U - Treatment device for byproduct formaldehyde-containing waste acid of organic phosphine product for producing water treatment agent - Google Patents
Treatment device for byproduct formaldehyde-containing waste acid of organic phosphine product for producing water treatment agent Download PDFInfo
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- CN219929852U CN219929852U CN202320924543.7U CN202320924543U CN219929852U CN 219929852 U CN219929852 U CN 219929852U CN 202320924543 U CN202320924543 U CN 202320924543U CN 219929852 U CN219929852 U CN 219929852U
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 126
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000002699 waste material Substances 0.000 title claims abstract description 38
- 239000002253 acid Substances 0.000 title claims abstract description 36
- 229910000073 phosphorus hydride Inorganic materials 0.000 title claims abstract description 19
- 239000000047 product Substances 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 17
- 239000006227 byproduct Substances 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 139
- 238000006243 chemical reaction Methods 0.000 claims abstract description 86
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 73
- 230000003647 oxidation Effects 0.000 claims abstract description 72
- 238000004062 sedimentation Methods 0.000 claims abstract description 60
- 238000013032 photocatalytic reaction Methods 0.000 claims abstract description 45
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims abstract description 19
- 238000012856 packing Methods 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000011941 photocatalyst Substances 0.000 claims description 10
- 239000010459 dolomite Substances 0.000 claims description 5
- 229910000514 dolomite Inorganic materials 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 210000003298 dental enamel Anatomy 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000004063 acid-resistant material Substances 0.000 claims description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 13
- 239000007788 liquid Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- VPTUPAVOBUEXMZ-UHFFFAOYSA-N (1-hydroxy-2-phosphonoethyl)phosphonic acid Chemical compound OP(=O)(O)C(O)CP(O)(O)=O VPTUPAVOBUEXMZ-UHFFFAOYSA-N 0.000 description 1
- 229940120146 EDTMP Drugs 0.000 description 1
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000003003 phosphines Chemical class 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
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- Catalysts (AREA)
Abstract
The utility model discloses a treatment device for byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent, which comprises a FEMON oxidation tank, a sedimentation tank, a photocatalytic reaction tank, a filler reaction tower and a neutralization regulating tank, wherein the input end of the FEMON oxidation tank is connected with a formaldehyde-containing waste acid storage tank, the two output ends of the FEMON oxidation tank are connected with the sedimentation tank and the neutralization regulating tank, and a formaldehyde remover solution and a stirring device are arranged in the FEMON oxidation tank; the output end of the sedimentation tank is connected with a photocatalytic reaction tank and a FEMON oxidation tank, a spraying device connected with the sedimentation tank, a plurality of photocatalytic reaction plates and a light source matched with the photocatalytic reaction plates are arranged in the photocatalytic reaction tank, and the output end of the photocatalytic reaction tank is connected with a filler reaction tower and a neutralization regulating tank; the output end of the packing reaction tower is connected with a neutralization adjusting tank, and the bottom of the neutralization adjusting tank is provided with a material outlet at the bottom of the adjusting tank. The utility model can realize the high-efficiency decomposition and removal of formaldehyde and various substance components in the waste acid, and has low treatment energy consumption and low cost.
Description
Technical Field
The utility model relates to the technical field of waste acid treatment, in particular to a treatment device for byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent.
Background
The organic phosphine water treatment agent represented by amino trimethylene phosphonic acid ATMP, ethylenediamine tetramethylene phosphonic acid EDTMPA, hydroxy ethylene diphosphonic acid HEDP and the like is widely applied to corrosion and scale inhibitors of circulating cooling water systems with high hardness, high temperature and high pH value because of low-concentration scale inhibition, good corrosion inhibition and other excellent application performances on metals.
However, the organic phosphine product is produced by using several of organic amine, formaldehyde, phosphorus trichloride and acetic acid as raw materials and adopting a technical principle of Mannich addition or esterification and hydrolysis under an acidic condition, a certain proportion of aqueous solution containing formaldehyde and low hydrogen chloride or aqueous solution containing acetic acid is produced by the process, and along with increasing demand of the market for the organic phosphine water treatment product, the more the byproduct is, the key problem of restricting the expansion of the productivity of the organic phosphine series product is developed. The existing treatment of formaldehyde-containing low acid is mostly concentrated on direct utilization, the treatment device is mostly a traditional device unit such as a multi-stage rectifying tower, a multi-stage absorbing tower and the like, and the treatment device is calculated according to an element balance principle, so that the recycling energy consumption is high, the cost is high, and negative economic benefits are often brought to production enterprises.
Disclosure of Invention
The utility model aims to solve the technical problems of large recycling energy consumption, high treatment cost and low economic benefit caused by the fact that the traditional waste acid treatment is mostly concentrated on direct utilization in the prior art.
The technical scheme of the utility model is as follows: the device comprises a FEMON oxidation tank, a sedimentation tank, a photocatalytic reaction tank, a filler reaction tower and a neutralization regulating tank, wherein the input end of the FEMON oxidation tank is connected with a formaldehyde-containing waste acid storage tank, the two output ends of the FEMON oxidation tank are respectively connected with the sedimentation tank and the neutralization regulating tank, and a formaldehyde remover solution and a stirring device are arranged in the FEMON oxidation tank; the output ends of one side and the bottom of the sedimentation tank are respectively connected with a photocatalytic reaction tank and a FEMON oxidation tank, a spraying device connected with the sedimentation tank, a plurality of photocatalytic reaction plates and a light source matched with the photocatalytic reaction plates are arranged in the photocatalytic reaction tank, and the output ends of the bottom and the top of the photocatalytic reaction tank are respectively connected with a filler reaction tower and a neutralization regulating tank; the output end of the packing reaction tower is connected with a neutralization adjusting tank, and the bottom of the neutralization adjusting tank is provided with a material outlet at the bottom of the adjusting tank.
Furthermore, the FEMON oxidation tank is provided with a lower material inlet of the oxidation tank, an air outlet at the top of the oxidation tank, an upper material outlet of the oxidation tank and a circulating feed inlet at the bottom of the oxidation tank, wherein the lower material inlet of the oxidation tank is connected with a formaldehyde-containing waste acid storage tank, and the stirring device comprises a plurality of stirrers.
Further, the stirrer is made of any one or combination of two of an anchor stirrer and a paddle stirrer, and the stirrer is made of any one of acid-resistant materials such as enamel, polytetrafluoroethylene and enamel lining plastic.
Further, the sedimentation tank is provided with a material inlet on the sedimentation tank, a material outlet on the sedimentation tank and a material outlet at the bottom of the sedimentation tank, wherein the material inlet on the sedimentation tank is connected with the material outlet on the oxidation tank, the height of the material inlet on the sedimentation tank is not higher than the height of the material outlet on the oxidation tank, the height of the material outlet on the sedimentation tank is lower than the height of the material inlet on the sedimentation tank, and the material outlet at the bottom of the sedimentation tank is connected with the circulating feed inlet at the bottom of the oxidation tank.
Furthermore, the photocatalytic reaction tank is provided with a reaction tank top material inlet, a reaction tank top air outlet and a reaction tank bottom material outlet, the reaction tank top material inlet is connected with a sedimentation tank upper material outlet, the spraying device comprises a spraying disk connected to the bottom of the reaction tank top material inlet, a plurality of photocatalytic reaction plates are longitudinally arranged on two side inner walls of the photocatalytic reaction tank, two side photocatalytic reaction plates are arranged in a staggered manner, and a plurality of light sources are arranged on the photocatalytic reaction tank inner walls above the photocatalytic reaction plates in a one-to-one correspondence manner.
Further, the shape of the photocatalyst reaction plate is any one or a combination of a plurality of straight plate shapes, folded line shapes, spiral shapes and wave shapes, and the light source adopts any one or a combination of two of fluorescent lamps and ultraviolet lamps.
Furthermore, the filler reaction tower is provided with a material inlet at the top of the reaction tower and a material outlet at the bottom of the reaction tower, the material inlet at the top of the reaction tower is connected with the material outlet at the bottom of the reaction tank, and dolomite filler is filled in the filler reaction tower.
Furthermore, the packing reaction tower provided by the utility model has a sandwich structure, and the packing reaction tower is provided with a sandwich medium inlet and a sandwich medium outlet which are respectively connected with the sandwich structure.
Furthermore, the neutralization regulating tank is also provided with a material inlet on the regulating tank and a material inlet at the top of the regulating tank, the material inlet on the regulating tank is connected with a material outlet at the bottom of the reaction tank, the material inlet at the top of the regulating tank is respectively connected with an air outlet at the top of the oxidation tank and an air outlet at the top of the reaction tank, and the neutralization regulating tank is a limestone neutralization regulating tank.
Furthermore, a first material transfer pump and a first control valve are arranged between the FEMON oxidation tank and the formaldehyde-containing waste acid storage tank, a second material transfer pump, a third material transfer pump and a fourth material transfer pump are correspondingly arranged at the material outlet ends of the sedimentation tank, the photocatalytic reaction tank and the filler reaction tower respectively, and a second control valve and a third control valve are correspondingly arranged at the material outlet ends of the FEMON oxidation tank and the neutralization regulating tank respectively.
Compared with the prior art, the utility model has the following advantages:
1) The treatment device can realize the efficient decomposition and removal of formaldehyde in the waste acid by utilizing the Fenton oxidation tank and the photocatalytic reaction tank and through the dual functions of Fenton oxidation decomposition and photocatalytic decomposition.
2) In the utility model, the multistage stirrer is arranged in the FEMON oxidation tank, so that formaldehyde and oxidizing substances contained in the waste acid can be fully and efficiently mixed, and the formaldehyde decomposition removal rate is improved; meanwhile, the multi-stage photocatalyst reaction plate and the same-stage light source are arranged in the photocatalytic reaction tank, so that the illumination catalysis area of waste liquid entering the reaction tank can be increased, and the illumination catalysis efficiency is enhanced.
3) In the utility model, the position of the material inlet on the sedimentation tank is not higher than the height of the material outlet on the oxidation tank, so that the fluid in the oxidation tank automatically overflows to the sedimentation tank under the action of gravity, and the energy consumption of the treatment device is reduced.
4) The treatment device disclosed by the utility model has the advantages of simple structure and convenience in operation, can effectively treat all material components in the waste acid, has a good treatment effect, can effectively improve the utilization rate of equipment and facilities to realize the recycling of materials, further reduces the treatment cost of formaldehyde-containing low-acid waste liquid, improves the economic benefit, and is easy to realize large-scale popularization.
Drawings
FIG. 1 is a schematic view of the structure of the treatment apparatus of the present utility model (wherein arrows indicate the flow direction of liquid or gas);
FIG. 2 is a cross-sectional view of a packed reaction column according to the present utility model.
Wherein: 1. FEMON oxidation pond; 101. a material inlet under the oxidation pond; 102. a stirring device; 103. an air outlet at the top of the oxidation pond; 104. a material outlet on the oxidation pond; 105. a circulating feed inlet at the bottom of the oxidation tank; 2. a sedimentation tank; 201. a material inlet on the sedimentation tank; 202. a material outlet on the sedimentation tank; 203. a material outlet at the bottom of the sedimentation tank; 3. a photocatalytic reaction tank; 301. a material inlet at the top of the reaction tank; 302. a light source; 303. a photocatalyst reaction plate; 304. an air outlet at the top of the reaction tank; 305. a material outlet at the bottom of the reaction tank; 306. a spray tray; 4. a packed reaction tower; 401. a material inlet at the top of the reaction tower; 402. a material outlet at the bottom of the reaction tower; 403. dolomite filler; 404. a sandwich structure; 405. an interlayer medium inlet; 406. an interlayer medium outlet; 5. a neutralization regulating tank; 501. a material inlet on the regulating tank; 502. an air inlet at the top of the regulating tank; 503. a material outlet at the bottom of the regulating tank; a1, a first transfer pump; a2, a second transfer pump; a3, a third transfer pump; a4, a fourth transfer pump; b1, a first control valve; b2, a second control valve; b3, a third control valve.
Detailed Description
The following describes specific embodiments of the present utility model with reference to the drawings.
Examples:
the utility model relates to a specific implementation mode of a treatment device for byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent, which mainly comprises a FEMON oxidation tank 1, a sedimentation tank 2, a photocatalytic reaction tank 3, a filler reaction tower 4 and a neutralization adjusting tank 5, wherein the FEMON oxidation tank 1 is provided with a lower material inlet 101 of the oxidation tank, an upper material outlet 103 of the oxidation tank, an upper material outlet 104 of the oxidation tank and a bottom circulation feed inlet 105 of the oxidation tank, and the lower material inlet 101 of the oxidation tank is connected with a formaldehyde-containing waste acid storage tank. The FEMON oxidation tank 1 is internally provided with formaldehyde remover solution and a stirring device 102, in this embodiment, the stirring device 102 comprises 3 stirrers, and the stirrers are paddle stirrers made of polytetrafluoroethylene materials.
The sedimentation tank 2 is provided with a sedimentation tank upper material inlet 201, a sedimentation tank upper material outlet 202 and a sedimentation tank bottom material outlet 203, wherein the sedimentation tank upper material inlet 201 is connected with the oxidation tank upper material outlet 104, and the sedimentation tank bottom material outlet 203 is connected with the oxidation tank bottom circulating feed inlet 105. In this embodiment, the height of the material inlet 201 on the sedimentation tank is not higher than the height of the material outlet 104 on the oxidation tank, so that the fluid in the FEMON oxidation tank 1 can automatically overflow to the sedimentation tank 2 under the action of gravity, the energy consumption of the treatment device is reduced, and the height of the material outlet 202 on the sedimentation tank is lower than the height of the material inlet 201 on the sedimentation tank.
The photocatalytic reaction tank 3 is provided with a reaction tank top material inlet 301, a reaction tank top air outlet 304 and a reaction tank bottom material outlet 305, and the reaction tank top material inlet 301 is connected with the sedimentation tank upper material outlet 202. A spraying disc 306 is arranged in the photocatalytic reaction tank 3, and the spraying disc 306 is connected to the bottom of the material inlet 301 at the top of the reaction tank; a plurality of photocatalyst reaction plates 303 are arranged below the spray disk 306, the photocatalyst reaction plates 303 are longitudinally arranged on the inner walls of the two sides of the photocatalyst reaction tank 3, and the photocatalyst reaction plates 303 on the two sides are arranged in a staggered manner; the upper part of each photo-catalytic reaction plate 303 is provided with a matched light source 302, and a plurality of light sources 302 are arranged on the inner wall of the photo-catalytic reaction tank 3 above the photo-catalytic reaction plates 303 in a one-to-one correspondence manner. In this embodiment, the photocatalyst reaction plate 303 is in a shape of a polygonal line, and the light source 302 is a fluorescent lamp.
The packed reaction tower 4 is provided with a reaction tower top material inlet 401 and a reaction tower bottom material outlet 402, and the reaction tower top material inlet 401 is connected with the reaction tank bottom material outlet 305. In this embodiment, referring to fig. 2, the filler reaction tower 4 is filled with dolomite filler 403, which is mainly used for reacting with low-content hydrochloric acid or low-content acetic acid contained in waste acid and mixed components of the two materials to generate soluble salt, so as to remove chloride ions and acetate ions in the waste water, and realize purification of low-acid waste water; the packing reaction tower 4 is also provided with a sandwich structure 404, and the packing reaction tower 4 is provided with a sandwich medium inlet 405 and a sandwich medium outlet 406 which are respectively connected with the sandwich structure 404, and the heating or cooling process conditions actually required can be met by introducing cold and hot mediums into the sandwich structure 404.
The neutralization adjusting tank 5 is provided with an adjusting tank upper material inlet 501, an adjusting tank top air inlet 502 and an adjusting tank bottom material outlet 503, wherein the adjusting tank upper material inlet 501 is connected with the reaction tank bottom material outlet 402, and the adjusting tank top air inlet 502 is respectively connected with the oxidation tank top air outlet 103 and the reaction tank top air outlet 304. In this embodiment, the neutralization adjustment tank 5 is a limestone neutralization adjustment tank.
In addition, in the embodiment, a first transfer pump a1 and a first control valve b1 are arranged between the FEMON oxidation tank 1 and the formaldehyde-containing waste acid storage tank.
The material outlet ends of the sedimentation tank 2, the photocatalytic reaction tank 3 and the filling reaction tower 4 are respectively correspondingly provided with a second material transfer pump a2, a third material transfer pump a3 and a fourth material transfer pump a4. Specifically, the rear ends of the upper material outlet 202 and the lower material outlet 203 of the sedimentation tank are provided with a second material transfer pump a2, the rear end of the lower material outlet 305 of the reaction tank is provided with a third material transfer pump a3, and the rear end of the lower material outlet 402 of the reaction tank is provided with a fourth material transfer pump a4.
And the material outlet ends of the FEMON oxidation tank 1 and the neutralization regulating tank 5 are respectively and correspondingly provided with a second control valve b2 and a third control valve b3. Specifically, the rear end of the material outlet 104 on the oxidation pond is provided with a second control valve b2, and the rear end of the material outlet 503 on the bottom of the adjustment pond is provided with a third control valve b3.
When the device is specifically applied, taking the purification treatment process of formaldehyde-containing low-hydrochloric acid and low-acetic acid mixed waste acid generated by tail gas absorption of organic phosphine products of the water treatment agent as an example, wherein: the formaldehyde content in the waste acid is about 1000ppm, the chloride ion content is about 7%, and the acetic acid content is about 10%. In this embodiment, the settling tanks 2 are arranged in series in two stages.
The formaldehyde-containing low-acid wastewater is pumped into a FEMON oxidation tank 1 from a material inlet 101 under the oxidation tank through a first control valve b1 and a first transfer pump a1, and is subjected to oxidation reaction with formaldehyde remover solution under the action of 3 stirrers, so that CO generated by formaldehyde decomposition is generated 2 Gas enters limestone from an air inlet 502 at the top of the regulating tank through an air outlet 103 at the top of the oxidizing tank and is absorbed in the regulating tank, when the liquid level in the FEMON oxidizing tank 1 reaches the position of a material outlet 104 on the oxidizing tank, a second control valve b2 is opened to enable the gas to automatically overflow into the two-stage serial sedimentation tank 2 through a material inlet 201 on the sedimentation tank.
The materials deposited in the sedimentation tank 2 are pumped into the FEMON oxidation tank 1 through a second transfer pump a2 by a material outlet 203 at the bottom of the sedimentation tank and recycled by a circulating feed inlet 105 at the bottom of the oxidation tank, and the liquid in the sedimentation tank 2 is sprayed into the photocatalytic reaction tank 3 from a material inlet 301 at the top of the reaction tank by a spraying disc 306 through a material outlet 202 on the sedimentation tank by the second transfer pump a 2.
Formaldehyde which is not completely decomposed in the FEMON oxidation tank 1 in waste acid is irradiated on a multistage photocatalyst reaction plate 303 from top to bottom in a photocatalytic reaction tank 3 through a multistage light source 302, and then is subjected to photocatalytic decomposition again to generate CO 2 The gas enters the neutralization adjusting tank 5 through the gas outlet 304 at the top of the reaction tank to be absorbed, and the reacted liquid is transferred into the packed reaction tower 4 from the material inlet 401 at the top of the reaction tower through the material outlet 305 at the bottom of the reaction tank and the third transfer pump a 3.
After fully reacting the waste liquid with dolomite filler 403 in the tower, the waste liquid is transferred into a neutralization adjusting tank 5 from a material inlet 501 on the adjusting tank through a fourth transfer pump a4 through a material outlet 402 at the bottom of the reaction tower for further reaction adjustment. After the pH value in the neutralization regulating tank 5 reaches a certain value, the third control valve b3 is opened, and the liquid is transferred to a post-treatment device for unified treatment through a material outlet 503 at the bottom of the regulating tank.
Wherein, the formaldehyde content in the waste liquid after the oxidation treatment of the FEMON oxidation tank 1 is reduced from 1000ppm to less than 200ppm, and the chloride ion content is reduced from 6.8% to 2.4%.
The formaldehyde content of the waste liquid after photocatalytic decomposition in the photocatalytic reaction tank 3 is reduced to less than 3ppm.
After the waste liquid is reacted and absorbed by the filler reaction tower 4, the chloride ion content in the waste liquid is less than 0.5%, and the acetate content is less than 0.8%.
The above embodiments are merely for illustrating the technical concept and features of the present utility model, and are not intended to limit the scope of the present utility model to those skilled in the art to understand the present utility model and implement the same. All modifications made according to the spirit of the main technical proposal of the utility model should be covered in the protection scope of the utility model.
Claims (10)
1. A processing apparatus that is used for producing water treatment agent organic phosphine product by-product to contain formaldehyde spent acid which characterized in that: the device comprises a FEMON oxidation tank (1), a sedimentation tank (2), a photocatalytic reaction tank (3), a filler reaction tower (4) and a neutralization regulating tank (5), wherein the input end of the FEMON oxidation tank (1) is connected with a formaldehyde-containing waste acid storage tank, the two output ends of the FEMON oxidation tank are respectively connected with the sedimentation tank (2) and the neutralization regulating tank (5), and formaldehyde remover solution and a stirring device (102) are arranged in the FEMON oxidation tank (1); the output ends at one side and the bottom of the sedimentation tank (2) are respectively connected with a photocatalytic reaction tank (3) and a FEMON oxidation tank (1), a spraying device connected with the sedimentation tank (2), a plurality of photocatalytic reaction plates (303) and a light source (302) matched with the photocatalytic reaction plates (303) are arranged in the photocatalytic reaction tank (3), and the output ends at the bottom and the top of the photocatalytic reaction tank (3) are respectively connected with a filler reaction tower (4) and a neutralization regulating tank (5); the output end of the packing reaction tower (4) is connected with a neutralization adjusting tank (5), and the bottom of the neutralization adjusting tank (5) is provided with an adjusting tank bottom material outlet (503).
2. The treatment device for producing a byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent according to claim 1, which is characterized in that: FEMON oxidation tank (1) have material inlet (101) under the oxidation tank, oxidation tank top gas outlet (103), oxidation tank upper material outlet (104), oxidation tank bottom circulation feed inlet (105), and oxidation tank lower material inlet (101) is connected with the spent acid storage tank that contains formaldehyde, agitating unit (102) include a plurality of agitators.
3. The treatment device for producing a byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent according to claim 2, wherein the treatment device is characterized in that: the stirrer is made of any one or combination of two of an anchor stirrer and a paddle stirrer, and is made of any one of enamel, polytetrafluoroethylene, enamel lining plastic and glass lining acid-resistant materials.
4. The treatment device for producing a byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent according to claim 2, wherein the treatment device is characterized in that: the sedimentation tank (2) is provided with a sedimentation tank upper material inlet (201), a sedimentation tank upper material outlet (202) and a sedimentation tank bottom material outlet (203), the sedimentation tank upper material inlet (201) is connected with the oxidation tank upper material outlet (104), the height of the sedimentation tank upper material inlet (201) is not higher than that of the oxidation tank upper material outlet (104), the height of the sedimentation tank upper material outlet (202) is lower than that of the sedimentation tank upper material inlet (201), and the sedimentation tank bottom material outlet (203) is connected with the oxidation tank bottom circulating feed inlet (105).
5. The treatment device for producing the byproduct formaldehyde-containing waste acid of the organic phosphine product for the water treatment agent according to claim 4, which is characterized in that: the photocatalytic reaction tank (3) is provided with a reaction tank top material inlet (301), a reaction tank top air outlet (304) and a reaction tank bottom material outlet (305), the reaction tank top material inlet (301) is connected with a sedimentation tank upper material outlet (202), the spraying device comprises a spraying disc (306) connected to the bottom of the reaction tank top material inlet (301), a plurality of photocatalytic reaction plates (303) are longitudinally arranged on two side inner walls of the photocatalytic reaction tank (3), two side photocatalytic reaction plates (303) are arranged in a staggered mode, and the light sources (302) are also provided with a plurality of light sources, and are arranged on the photocatalytic reaction tank (3) inner walls above the photocatalytic reaction plates (303) in a one-to-one correspondence mode.
6. The treatment device for producing the byproduct formaldehyde-containing waste acid of the organic phosphine product for the water treatment agent according to claim 5, which is characterized in that: the photocatalyst reaction plate (303) is in the shape of any one or a combination of a plurality of straight plate shapes, fold lines, spiral shapes and waveforms, and the light source (302) adopts any one or a combination of two of fluorescent lamps and ultraviolet lamps.
7. The treatment device for producing the byproduct formaldehyde-containing waste acid of the organic phosphine product for the water treatment agent according to claim 5, which is characterized in that: the filler reaction tower (4) is provided with a reaction tower top material inlet (401) and a reaction tower bottom material outlet (402), the reaction tower top material inlet (401) is connected with a reaction tank bottom material outlet (305), and dolomite filler (403) is filled in the filler reaction tower (4).
8. The treatment device for producing a byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent according to claim 7, wherein the treatment device comprises: the packing reaction tower (4) is provided with a sandwich structure (404), and the packing reaction tower (4) is provided with a sandwich medium inlet (405) and a sandwich medium outlet (406) which are respectively connected with the sandwich structure (404).
9. The treatment device for producing a byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent according to claim 7, wherein the treatment device comprises: the neutralization equalizing tank (5) is further provided with a material inlet (501) on the equalizing tank and a material inlet (502) on the top of the equalizing tank, the material inlet (501) on the equalizing tank is connected with a material outlet (402) at the bottom of the reaction tank, the material inlet (502) on the top of the equalizing tank is respectively connected with an air outlet (103) at the top of the oxidation tank and an air outlet (304) at the top of the reaction tank, and the neutralization equalizing tank (5) is a limestone neutralization equalizing tank.
10. The treatment device for producing a byproduct formaldehyde-containing waste acid of an organic phosphine product for producing a water treatment agent according to claim 9, wherein the treatment device comprises: be equipped with first material pump (a 1), first control valve (b 1) between FEMON oxidation tank (1) and the formaldehyde-containing spent acid storage tank, the material exit end of sedimentation tank (2), photocatalytic reaction tank (3), packing reaction tower (4) corresponds respectively and is equipped with second material pump (a 2), third material pump (a 3), fourth material pump (a 4) that changes, the material exit end of FEMON oxidation tank (1), neutralization equalizing basin (5) corresponds respectively and is equipped with second control valve (b 2), third control valve (b 3).
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| CN202320924543.7U CN219929852U (en) | 2023-04-23 | 2023-04-23 | Treatment device for byproduct formaldehyde-containing waste acid of organic phosphine product for producing water treatment agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320924543.7U CN219929852U (en) | 2023-04-23 | 2023-04-23 | Treatment device for byproduct formaldehyde-containing waste acid of organic phosphine product for producing water treatment agent |
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| CN (1) | CN219929852U (en) |
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