CN210065200U - Device for recovering β inorganic salt in salt mother liquor by low-temperature freezing method - Google Patents
Device for recovering β inorganic salt in salt mother liquor by low-temperature freezing method Download PDFInfo
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- CN210065200U CN210065200U CN201920928394.5U CN201920928394U CN210065200U CN 210065200 U CN210065200 U CN 210065200U CN 201920928394 U CN201920928394 U CN 201920928394U CN 210065200 U CN210065200 U CN 210065200U
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- mother liquor
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- sodium sulfate
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- 239000012452 mother liquor Substances 0.000 title claims abstract description 62
- 150000003839 salts Chemical class 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 18
- 229910017053 inorganic salt Inorganic materials 0.000 title claims abstract description 13
- 230000008014 freezing Effects 0.000 title claims abstract description 12
- 238000007710 freezing Methods 0.000 title claims abstract description 12
- 238000002425 crystallisation Methods 0.000 claims abstract description 65
- 230000008025 crystallization Effects 0.000 claims abstract description 65
- 238000001816 cooling Methods 0.000 claims abstract description 28
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 21
- 239000013078 crystal Substances 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 16
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 14
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000012943 hotmelt Substances 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims description 26
- 238000002844 melting Methods 0.000 claims description 26
- 239000003507 refrigerant Substances 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 6
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000013526 supercooled liquid Substances 0.000 claims description 2
- 238000004781 supercooling Methods 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- HIEHAIZHJZLEPQ-UHFFFAOYSA-M sodium;naphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 HIEHAIZHJZLEPQ-UHFFFAOYSA-M 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The utility model relates to a device of inorganic salt in β salt mother liquor is retrieved to low temperature freezing method, its structure is including forcing precooling apparatus, cooling crystallization device and centrifugal solution crystal device, β salt mother liquor is through the precooling, the cooling crystallization, centrifugal separation obtains centrifugal mother liquor and ten water sodium sulfate solids, then obtain anhydrous sodium sulfate with ten water sodium sulfate solids hot melt evaporative concentration, do not contain the sodium sulfate in the centrifugal mother liquor, basically only contain the organic matter, and the centrifugal mother liquor that separates out can directly burn, can not produce corrosion to incineration facility in incineration process, the pollution that produces when burning significantly reduces, can also obtain anhydrous sodium sulfate product simultaneously, the utility model discloses utilize the low temperature freezing method can separate inorganic salt and the organic matter in the β salt mother liquor, and retrieve inorganic salt, make β salt mother liquor directly burn and can reach emission standard.
Description
Technical Field
The utility model relates to an inorganic salt recovery unit, specifically speaking are inorganic salt's device in β salt mother liquor is retrieved to low temperature freezing method.
Background
β the main components of the mother liquor are naphthalenesulfonic acid sodium salt, sulfate, sulfite and naphthalenesulfonic acid, because the salt and COD are too high, the effective treatment of the mother liquor is still a big problem, for the high-salt mother liquor wastewater with high COD, the method of direct incineration can be used for treatment, but because the mother liquor contains a large amount of sulfate, the corrosion to the incineration equipment is serious in the incineration process, so the direct incineration causes the service life of the incineration equipment to be greatly reduced, and the β salt mother liquor has high concentration, deep chromaticity, complex components, and serious environmental pollution due to direct discharge, so the inorganic salt and the organic matter need to be separated, and then the organic matter is incinerated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device of low temperature refrigeration method recovery β salt mother liquor in inorganic salt to solve β salt mother liquor and directly burn and cause incineration equipment life greatly reduced and to cause the problem of pollution to the environment.
The utility model is realized in such a way that a device for recovering β inorganic salt in salt mother liquor by a low-temperature freezing method comprises
The forced precooling device is used for precooling the high-temperature β salt mother liquor;
a cooling crystallization device connected with the forced precooling device and used for continuously cooling the β salt mother liquor which is subjected to precooling to reach a certain supercooling degree to form a supercooled liquid and simultaneously separate out crystals, and
and the centrifugal crystal dissolving device is connected with the cooling crystallization device and is used for carrying out centrifugal separation on crystals discharged by the cooling crystallization device to obtain centrifugal mother liquor and sodium sulfate decahydrate crystals, heating and melting the sodium sulfate decahydrate crystals obtained by centrifugation into a sodium sulfate solution, and evaporating and concentrating the sodium sulfate solution to generate anhydrous sodium sulfate.
The forced precooling device comprises a precooler, a cooling circulating pump and a circulating barrel which are connected in an annular mode, the precooler is a shell-and-tube heat exchanger, the tube side of the heat exchanger is used for allowing β salt mother liquor to pass through, the shell side of the heat exchanger is used for introducing cooling water, and the circulating barrel is communicated with the cooling crystallization device through a pipeline.
The cooling crystallization device comprises a crystallizer, an external cooler, a crystallization circulating pump and a refrigerant circulating pump; the crystallizer comprises an outer shell and a central circulating pipe, wherein the central circulating pipe is vertically provided with the center of the outer shell and penetrates from the upper part of the shell to the bottom of the shell; the outlet of the external cooler is connected with the top of the central circulating pipe, the upper part of the shell of the crystallizer is connected with the inlet of the external cooler through a pipeline, and the crystallization circulating pump is positioned on a pipeline between the crystallizer and the external cooler; the refrigerant circulating pump is communicated with a refrigerant inlet and a refrigerant outlet of the external cooler, and a chilled water inlet and a chilled water outlet are arranged on a pipeline between the refrigerant circulating pump and the external cooler; the bottom of the shell is provided with a crystallization outlet.
The centrifugal crystal dissolving device comprises a centrifugal machine, a hot melting tank, a mother liquor tank and a hot melting pump; the centrifuge is provided with a mixture inlet, a mother liquid outlet and a solid outlet; the mother liquor tank is communicated with the mother liquor outlet, the hot melting tank is connected with the solid outlet, the hot melting tank is provided with a jacket, a steam inlet and a condensate water outlet are arranged on the jacket of the hot melting tank, and the hot melting pump is connected with the inner cavity of the hot melting tank.
The mother liquor tank is connected with the incineration device.
The outlet of the hot melt pump is connected with the evaporation concentration device.
The utility model discloses a force precooling apparatus, cooling crystallization device and centrifugation dissolve brilliant device, β salt mother liquor is through the precooling, the cooling crystallization, centrifugal separation obtains centrifugal mother liquor and ten water sodium sulfate solids, then obtain anhydrous sodium sulfate with ten water sodium sulfate solids hot melt evaporative concentration.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a forced precooling device; 2. a cooling crystallization device; 3. a centrifugal crystal dissolving device; 1-1, a precooler; 1-2, cooling a circulating pump; 1-3, circulating barrel; 2-1, a crystallizer; 2-2, an external cooler; 2-3, a crystallization circulating pump; 2-4, a refrigerant circulating pump; 3-1, a centrifuge; 3-2, hot melting; 3-3, mother liquor tank; 3-4, a hot melt pump; 2-1-1, a shell; 2-1-2, central circulation tube; 2-1-3, a crystallization outlet; 2-2-1, a refrigerant inlet; 2-2-2 and a refrigerant outlet; 3-1-1, a mixture inlet; 3-1-2, mother liquor outlet; 3-1-3, solid outlet; 3-2-1, a steam inlet; 3-2-2 and a condensed water outlet.
Detailed Description
As shown in figure 1, the utility model discloses a force precooling apparatus 1, cooling crystallization device 2 and 3 triplets of centrifugal solution crystal device, make β salt mother liquor through the precooling, the cooling crystallization, centrifugal separation obtains centrifugal mother liquor and ten water sodium sulfate solids, then with ten water sodium sulfate solids hot melt evaporative concentration obtain anhydrous sodium sulfate, do not contain the sodium sulfate in the centrifugal mother liquor, basically only contain the organic matter, and the centrifugal mother liquor of isolating can directly burn, can not produce corrosion to incineration facility in the incineration process, the pollution that produces when burning significantly reduces.
The forced precooling device 1 comprises a precooler 1-1, a cooling circulating pump 1-2 and a circulating barrel 1-3 which are connected in an annular mode, the precooler 1-1 is a tube type heat exchanger, the tube side of the heat exchanger is used for allowing β salt mother liquor to pass, the shell side of the heat exchanger is used for introducing cooling water, the circulating barrel 1-3 is communicated with the cooling crystallizing device 2 through a pipeline, β salt mother liquor at about 90 ℃ is introduced into a pipeline between the heat exchanger and the circulating pump and circularly flows under the action of the circulating pump, the shell side of the heat exchanger carries out heat exchange and temperature reduction when passing through the tube side of the heat exchanger, circulating cooling water at about 30 ℃ is introduced into the shell side, the β salt mother liquor is cooled to 40-45 ℃, and the cooled β salt mother liquor is stored in the circulating barrel 1-3 and is conveyed to the cooling crystallizing device 2 from the circulating barrel 1-3 to carry out cooling and crystallizing.
The cooling crystallization device 2 comprises a crystallizer 2-1, an external cooler 2-2, a crystallization circulating pump 2-3 and a refrigerant circulating pump 2-4, the crystallizer 2-1 comprises a shell 2-1-1 and a central circulating pipe 2-1-2, the central circulating pipe 2-1-2 is vertically provided with the center of the shell 2-1-1 and penetrates from the upper part of the shell to the bottom of the shell, a crystallization outlet 2-1-3 is arranged at the bottom of the shell, an outlet of the external cooler 2-2 is connected with the top of the central circulating pipe 2-1-2, the upper part of the shell of the crystallizer 2-1 is connected with an inlet of the external cooler 2-2 through a pipeline, the crystallization circulating pump 2-3 is positioned on a pipeline between the crystallizer 2-1 and the external cooler 2-2-2, the refrigerant 2-4 is communicated with an inlet 2-2-1 and an outlet 2-2-2 of the external cooler 2-2 through a pipeline, a large-circulation pipe 2-2-2, a large amount of the crystallization liquid enters the crystallization circulating pump 2-2-2-2 through a high-circulation cooling circulation pipe 2-2-2 circulation system to prevent the crystallization liquid from entering the crystallization crystallizer from a crystallization circulation system, the crystallization liquid from entering a crystallization system, the crystallization crystallizer 2-2-2-2, the crystallization system is prevented from being deposited by a crystallization system from a crystallization system, the crystallization system from a crystallization temperature difference of a crystallization system, the crystallization liquid, the crystallization system from being deposited from the crystallization, the crystallization liquid, the crystallization system, the crystallization liquid is prevented from being deposited from the crystallization, the deposition of the crystallization, the crystallization system from the crystallization, the crystallization system from the crystallization, the deposition of the crystallization system from the crystallization, the crystallization system, the crystallization system is prevented from the crystallization, the crystallization system from the crystallization, the crystallization system from the crystallization, the.
The centrifugal crystal dissolving device 3 comprises a centrifugal machine 3-1, a hot melting tank 3-2, a mother liquor tank 3-3 and a hot melting pump 3-4. The centrifuge 3-1 is provided with a mixture inlet 3-1-1, a mother liquor outlet 3-1-2 and a solid outlet 3-1-3. The mother liquor tank 3-3 is communicated with a mother liquor outlet 3-1-2, the hot melting tank 3-2 is connected with a solid outlet 3-1-3, the hot melting tank 3-2 is provided with a jacket, the jacket of the hot melting tank 3-2 is provided with a steam inlet 3-2-1 and a condensed water outlet 3-2, and the hot melting pump 3-4 is connected with the inner cavity of the hot melting tank 3-2. The mother liquor tank 3-3 is connected with an incinerator, and the outlet of the hot melt pump 3-4 is connected with an evaporation and concentration device. And a large amount of crystals generated by the cooling crystallization device 2 are separated into centrifugal mother liquor and sodium sulfate decahydrate solids through the centrifugal action of a centrifugal machine 3-1, and the centrifugal mother liquor obtained after centrifugation basically does not contain sodium sulfate and can be directly incinerated. And (3) putting the obtained solid into a hot melting tank 3-2, melting the solid into a sulfuric acid solution under the action of jacket steam, and evaporating and concentrating the sodium sulfate solution to generate an anhydrous sodium sulfate product.
The utility model discloses utilize the low temperature refrigeration method can separate inorganic salt and organic matter in the β salt mother liquor to retrieve inorganic salt, make β salt mother liquor directly burn and can reach emission standard.
Claims (6)
1. A device for recovering β inorganic salt in salt mother liquor by a low-temperature freezing method is characterized by comprising
The forced precooling device is used for precooling the high-temperature β salt mother liquor;
a cooling crystallization device connected with the forced precooling device and used for continuously cooling the β salt mother liquor which is subjected to precooling to reach a certain supercooling degree to form a supercooled liquid and simultaneously separate out crystals, and
and the centrifugal crystal dissolving device is connected with the cooling crystallization device and is used for carrying out centrifugal separation on crystals discharged by the cooling crystallization device to obtain centrifugal mother liquor and sodium sulfate decahydrate crystals, heating and melting the sodium sulfate decahydrate crystals obtained by centrifugation into a sodium sulfate solution, and evaporating and concentrating the sodium sulfate solution to generate anhydrous sodium sulfate.
2. The device for recovering β inorganic salts from the salt mother liquor by the low-temperature freezing method according to claim 1, wherein the forced precooling device comprises a precooler, a cooling circulating pump and a circulating barrel which are connected in a ring shape, the precooler is a shell-and-tube heat exchanger, the tube side of the heat exchanger is used for passing β salt mother liquor, the shell side of the heat exchanger is used for introducing cooling water, and the circulating barrel is communicated with the temperature-reducing crystallization device through a pipeline.
3. The device for recovering β inorganic salts from a salt mother liquor by a low-temperature freezing method according to claim 1, wherein the cooling crystallization device comprises a crystallizer, an external cooler, a crystallization circulating pump and a refrigerant circulating pump, the crystallizer comprises a shell and a central circulating pipe, the central circulating pipe is vertically arranged in the center of the shell and penetrates from the upper part of the shell to the bottom of the shell, an outlet of the external cooler is connected with the top of the central circulating pipe, the upper part of the shell of the crystallizer is connected with an inlet of the external cooler through a pipeline, the crystallization circulating pump is arranged on a pipeline between the crystallizer and the external cooler, the refrigerant circulating pump is communicated with a refrigerant inlet and a refrigerant outlet of the external cooler, a chilled water inlet and a chilled water outlet are arranged on a pipeline between the refrigerant circulating pump and the external cooler, and a crystallization outlet is arranged at the bottom of the shell.
4. The device for recovering β inorganic salts from salt mother liquor by using the low-temperature freezing method according to claim 1, wherein the centrifugal crystal dissolving device comprises a centrifuge, a hot melting tank, a mother liquor tank and a hot melting pump, the centrifuge is provided with a mixture inlet, a mother liquor outlet and a solid outlet, the mother liquor tank is communicated with the mother liquor outlet, the hot melting tank is connected with the solid outlet, the hot melting tank is provided with a jacket, the jacket of the hot melting tank is provided with a steam inlet and a condensed water outlet, and the hot melting pump is connected with an inner cavity of the hot melting tank.
5. The apparatus for recovering β inorganic salts in salt mother liquor by low-temperature freezing method according to claim 4, wherein the mother liquor tank is connected to an incinerator.
6. The apparatus for recovering β inorganic salts in salt mother liquor by low-temperature freezing method according to claim 4, wherein the outlet of the hot-melt pump is connected to an evaporation concentration device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920928394.5U CN210065200U (en) | 2019-06-20 | 2019-06-20 | Device for recovering β inorganic salt in salt mother liquor by low-temperature freezing method |
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| CN201920928394.5U CN210065200U (en) | 2019-06-20 | 2019-06-20 | Device for recovering β inorganic salt in salt mother liquor by low-temperature freezing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087241A (en) * | 2021-04-02 | 2021-07-09 | 大连广泰源环保科技有限公司 | Sour slurry treatment process and equipment suitable for landfill leachate |
| CN113998819A (en) * | 2021-10-12 | 2022-02-01 | 铜陵有色金属集团股份有限公司 | Sodium sulfate progressive freezing crystallization device and using method thereof |
| CN115350499A (en) * | 2022-10-18 | 2022-11-18 | 常州中源工程技术有限公司 | Sodium sulfate purification treatment system and treatment process thereof |
| CN117146483A (en) * | 2023-09-06 | 2023-12-01 | 内蒙古伊东集团东兴化工有限责任公司 | Heat exchange device and heat exchange method of denitration refrigerating unit by substituted membrane method |
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2019
- 2019-06-20 CN CN201920928394.5U patent/CN210065200U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087241A (en) * | 2021-04-02 | 2021-07-09 | 大连广泰源环保科技有限公司 | Sour slurry treatment process and equipment suitable for landfill leachate |
| CN113998819A (en) * | 2021-10-12 | 2022-02-01 | 铜陵有色金属集团股份有限公司 | Sodium sulfate progressive freezing crystallization device and using method thereof |
| CN115350499A (en) * | 2022-10-18 | 2022-11-18 | 常州中源工程技术有限公司 | Sodium sulfate purification treatment system and treatment process thereof |
| CN117146483A (en) * | 2023-09-06 | 2023-12-01 | 内蒙古伊东集团东兴化工有限责任公司 | Heat exchange device and heat exchange method of denitration refrigerating unit by substituted membrane method |
| CN117146483B (en) * | 2023-09-06 | 2024-03-26 | 内蒙古伊东集团东兴化工有限责任公司 | Heat exchange device and heat exchange method of denitration refrigerating unit by substituted membrane method |
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Address after: 050000 10-1201, Fangda Science Park, 266 Tianshan Street, high tech Zone, Shijiazhuang City, Hebei Province Patentee after: Shijiazhuang Dingwei Chemical Equipment Engineering Co.,Ltd. Address before: 050000 10-1201, Fangda Science Park, 266 Tianshan Street, high tech Zone, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG DINGWEI CHEMICAL EQUIPMENT ENGINEERING Co.,Ltd. |
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Assignee: Qingcheng Equipment Technology Hebei Co.,Ltd. Assignor: Shijiazhuang Dingwei Chemical Equipment Engineering Co.,Ltd. Contract record no.: X2023980042131 Denomination of utility model: A low-temperature freezing method for recovery b Device for inorganic salts in salt mother liquor Granted publication date: 20200214 License type: Common License Record date: 20230918 |
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Denomination of utility model: A low-temperature freezing method for recovery b Device for inorganic salts in salt mother liquor Effective date of registration: 20231020 Granted publication date: 20200214 Pledgee: China CITIC Bank Co.,Ltd. Shijiazhuang Branch Pledgor: Shijiazhuang Dingwei Chemical Equipment Engineering Co.,Ltd. Registration number: Y2023980062108 |