CN219922921U - Phosphoric acid preparation facilities - Google Patents
Phosphoric acid preparation facilities Download PDFInfo
- Publication number
- CN219922921U CN219922921U CN202321638884.4U CN202321638884U CN219922921U CN 219922921 U CN219922921 U CN 219922921U CN 202321638884 U CN202321638884 U CN 202321638884U CN 219922921 U CN219922921 U CN 219922921U
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- China
- Prior art keywords
- tank
- tail gas
- outlet
- dilute acid
- acid pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 53
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 16
- 239000011574 phosphorus Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 230000036571 hydration Effects 0.000 claims abstract description 14
- 238000006703 hydration reaction Methods 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 2
- 238000010992 reflux Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 17
- 235000011007 phosphoric acid Nutrition 0.000 description 15
- 239000007788 liquid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 239000004135 Bone phosphate Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229940005657 pyrophosphoric acid Drugs 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a phosphoric acid preparation device which comprises a phosphorus dissolving device, a venturi tube, a dilute acid pump, a dilute acid tank, a pressurizing device, a hydration tower, a circulating acid pump, a membrane remover, a condensing device, a filtering device, a finished product tank, a tail gas treatment tank and a tail gas combustion treatment device. The utility model realizes the maximization of the value, the production efficiency and the quality controllability of chemical products, is well integrated with the existing production system, is beneficial to the improvement of the production system, and finally realizes the simple flow, economy, high efficiency, self-circulation, less emission and accurate batching.
Description
Technical Field
The utility model relates to the technical field of phosphorus chemical industry, in particular to a phosphoric acid preparation device.
Background
Phosphoric acid is colorless transparent or slightly colored thick liquid at normal temperature, has a specific gravity of 1.69, is easily dissolved in water and alcohol, is corrosive, and becomes pyrophosphoric acid after dehydration under heating at 212 ℃, and then becomes metaphosphoric acid. The solidification point of phosphoric acid is 21.1 ℃. Orthophosphoric acid is the simplest oxyacid, and the phosphate radical is a PO4 tetrahedron formed by combining phosphorus with oxygen. Orthophosphoric acid has two kinds of crystals, namely, anhydrous phosphoric acid, is colorless crystalline solid (melting point 42.35 ℃) and has no oxidizing power below 350 ℃, and semi-aqueous industrial phosphoric acid (melting point 29.3 ℃). Pure phosphoric acid is slow to crystallize, when impurities exist in phosphoric acid, the impurities act as crystal nuclei to crystallize rapidly, and when the content exceeds 100%, the freezing point of the system drops sharply. Phosphoric acid is a medium strength tribasic acid with a fairly strong hydrogen-bonded structure and therefore a very high viscosity.
Because of the high pollution and low profit of the phosphorus chemical industry, most crude phosphorus manufacturers in China now adopt high-energy consumption and low profit operation modes of mass production and batch sales, the economic benefit is poor, the environmental hazard is also large, and a plurality of products are not utilized efficiently, so that the waste of resources is caused.
Therefore, a phosphoric acid preparation device with simple flow, economy, high efficiency, self circulation, low emission and accurate batching is urgently needed in the market.
Disclosure of Invention
The utility model aims to provide a phosphoric acid preparation device with simple flow, economy, high efficiency, self circulation, less emission and accurate batching.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the phosphoric acid preparation device comprises a phosphorus dissolving device, a venturi tube, a dilute acid pump, a dilute acid tank, a pressurizing device, a hydration tower, a circulating acid pump, a membrane remover, a condensing device, a filtering device, a finished product tank, a tail gas treatment tank and a tail gas combustion treatment device;
the phosphorus dissolving device is matched with the raw material yellow phosphorus and is used for heating the yellow phosphorus into a liquid state;
after liquefaction, the outlet of the phosphorus dissolving device is connected with the outlet of the pressurizing device, and liquefied yellow phosphorus and air are mixed and pressurized and then sent into a hydration tower for containing acid liquor;
the discharging end of the hydration tower is respectively connected with a circulating acid pump and a venturi, wherein dilute acid is introduced into the venturi, and concentrated acid is introduced into the circulating acid pump;
the venturi tube is used for introducing the dilute acid into the dilute acid tank, and then the dilute acid is separated by the dilute acid pump, wherein the relatively diluted acid liquid flows back into the venturi tube, the relatively high-concentration acid liquid flows into the circulating acid pump after being treated by the membrane remover, and the vaporization part is introduced into the tail gas treatment tank in the process;
the concentrated dilute acid is mixed and prepared into the required concentration by a circulating acid pump, the vaporized part is introduced into a tail gas treatment tank in the process, the concentrated acid part flows back to a hydration tower, the qualified part is condensed by a condensing device and then filtered to remove impurity solids by a filtering device, and the liquid part is put into a finished product tank;
the vaporized gas after heat exchange by the condensing device is introduced into the tail gas treatment tank and is treated and then introduced into the tail gas combustion treatment device for treatment.
Compared with the prior art, the utility model has the following advantages:
(1) According to the utility model, through the system full-disc planning design, the energy of the production system is recovered to the greatest extent, and waste gas, waste water, dust and solid waste generated in all production links are not directly discharged into the external environment, but are recycled in the system until the waste becomes non-valuable waste, and the non-valuable waste is uniformly treated and then discharged to the external circulation system.
(2) The utility model comprehensively applies minerals, chemical industry and thermodynamics, not only achieves the maximum application of solid materials, but also achieves the maximum value, production efficiency and quality controllability of chemical products, and also achieves the cyclic utilization of heat energy to reduce the energy consumption of the whole reaction system, thus the material efficiency ratio and the energy efficiency ratio of the utility model are obviously superior to the prior art.
(3) In the design link of the utility model, the adjustment of the equipment corresponding to the existing mature production line and production process is not great, mainly the improvement on the process method and the increase of part of equipment (such as a catalytic cracking and gas collecting device), and the utility model is well integrated with the existing production system, thereby being beneficial to the improvement of the production system.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure: the device comprises a phosphorus dissolving device 1, a venturi tube 2, a dilute acid pump 3, a dilute acid tank 4, a pressurizing device 5, a hydration tower 6, a circulating acid pump 7, a membrane remover 8, a condensing device 9, a filtering device 10, a finished product tank 11, a tail gas treatment tank 12 and a tail gas combustion treatment device 13.
Description of the embodiments
Examples
The phosphoric acid preparation device shown in figure 1 comprises a phosphorus dissolving device 1, a venturi tube 2, a dilute acid pump 3, a dilute acid tank 4, a pressurizing device 5, a hydration tower 6, a circulating acid pump 7, a membrane remover 8, a condensing device 9, a filtering device 10, a finished product tank 11, a tail gas treatment tank 12 and a tail gas combustion treatment device 13;
the phosphorus dissolving device 1 is matched with the yellow phosphorus serving as a raw material and is used for heating the yellow phosphorus into a liquid state;
after liquefaction, the outlet of the phosphorus dissolving device 1 is connected with the outlet of the pressurizing device 5, and liquefied yellow phosphorus and air are mixed and pressurized and then sent into the hydration tower 6 for containing acid liquor;
the discharge end of the hydration tower 6 is respectively connected with a circulating acid pump 7 and a venturi tube 2, wherein dilute acid is introduced into the venturi tube 2, and concentrated acid is introduced into the circulating acid pump 7;
the venturi tube 2 is used for introducing the entering dilute acid into the dilute acid tank 4, and then the dilute acid is separated by the dilute acid pump 3, wherein the relatively diluted acid liquid flows back into the venturi tube 2, the relatively high-concentration acid liquid flows into the circulating acid pump 7 after being treated by the membrane remover 8, and the vaporization part is introduced into the tail gas treatment tank 12 in the process;
the concentrated dilute acid is mixed and prepared into the required concentration by a circulating acid pump, the vaporized part is introduced into a tail gas treatment tank 12 in the process, the concentrated acid part flows back to a hydration tower 6, the qualified part is condensed by a condensing device 9 and then filtered to remove impurity solids by a filtering device 10, and the liquid part is put into a finished product tank 11;
the vaporized gas after heat exchange by the condensing device 9 is introduced into the tail gas treatment tank 12 and is treated and then introduced into the tail gas combustion treatment device 13 for treatment.
The equipment according to the embodiment not only realizes the maximization of the value, the production efficiency and the quality controllability of chemical products, but also is well integrated with the existing production system, is beneficial to the improvement of the production system, and finally realizes the advantages of simple flow, economy, high efficiency, self-circulation, less emission and accurate batching.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A phosphoric acid production device, characterized in that: the preparation device comprises a phosphorus dissolving device (1), a venturi tube (2), a dilute acid pump (3), a dilute acid tank (4), a pressurizing device (5), a hydration tower (6), a circulating acid pump (7), a membrane remover (8), a condensing device (9), a filtering device (10), a finished product tank (11), a tail gas treatment tank (12) and a tail gas combustion treatment device (13);
the phosphorus dissolving device (1) is matched with the yellow phosphorus serving as a raw material;
the outlet of the phosphorus dissolving device (1) is connected with the outlet of the pressurizing device (5), and the outlet of the phosphorus dissolving device and the outlet of the pressurizing device are connected with the feeding end of the hydration tower (6) together;
the discharge end of the hydration tower (6) is respectively connected with a circulating acid pump (7) and a venturi tube (2);
the outlet end of the venturi tube (2) is connected with a dilute acid tank (4), and the dilute acid tank (4) is connected with a dilute acid pump (3);
a centrifugal separation device is arranged in the dilute acid pump (3), and is respectively connected with the flow venturi tube (2) and the membrane remover (8) after centrifugal separation;
the discharging end of the membrane remover (8) is connected with a circulating acid pump (7), and the gas outlet is connected with the gas inlet end of the tail gas treatment tank (12);
the gas outlet of the circulating acid pump is connected with the gas inlet end of the tail gas treatment tank (12), the reflux port is connected with the hydration tower (6), the discharge port is connected with the feed end of the filtering device (10) through the condensing device (9), and the discharge end of the filtering device (10) is connected with the finished product tank (11);
the gas outlet of the condensing device (9) is connected with the gas inlet end of the tail gas treatment tank (12), and the gas outlet end of the tail gas treatment tank (12) is connected with the tail gas combustion treatment device (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321638884.4U CN219922921U (en) | 2023-06-27 | 2023-06-27 | Phosphoric acid preparation facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321638884.4U CN219922921U (en) | 2023-06-27 | 2023-06-27 | Phosphoric acid preparation facilities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219922921U true CN219922921U (en) | 2023-10-31 |
Family
ID=88489351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321638884.4U Active CN219922921U (en) | 2023-06-27 | 2023-06-27 | Phosphoric acid preparation facilities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219922921U (en) |
-
2023
- 2023-06-27 CN CN202321638884.4U patent/CN219922921U/en active Active
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