CN112981457A - Pure water recycling device in chlor-alkali production - Google Patents
Pure water recycling device in chlor-alkali production Download PDFInfo
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- CN112981457A CN112981457A CN202110156428.5A CN202110156428A CN112981457A CN 112981457 A CN112981457 A CN 112981457A CN 202110156428 A CN202110156428 A CN 202110156428A CN 112981457 A CN112981457 A CN 112981457A
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- tank
- reaction tank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 141
- 239000003513 alkali Substances 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000004064 recycling Methods 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 52
- 238000001704 evaporation Methods 0.000 claims abstract description 26
- 230000008020 evaporation Effects 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 16
- 239000003792 electrolyte Substances 0.000 abstract description 8
- 239000011780 sodium chloride Substances 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
- C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a pure water recycling device in chlor-alkali production, which comprises a chlor-alkali reaction tank, an evaporation tank, a water storage tank, an air escape pipe, a water outlet pipe A, a water outlet pipe B, a water return pipe and a pure water input pipe, wherein the chlorine-alkali reaction tank is connected with the evaporation tank; the top of the chlor-alkali reaction tank is provided with an air escape pipe and a pure water input pipe; an ionic membrane reaction tank is arranged at the bottom of the chlor-alkali reaction tank; a water outlet pipe A is arranged on one side of the bottom of the chlor-alkali reaction tank; the water outlet pipe is connected with the evaporating pot; one side of the evaporation tank is provided with a water outlet pipe B; the water outlet pipe B is connected with the water storage tank; the water storage tank is provided with a water return pipe; the other side of the water return pipe is connected with the top of the chlor-alkali reaction tank; according to the invention, the sodium chloride electrolyte discharged in the chlor-alkali reaction process is utilized, the sodium chloride electrolyte is evaporated to obtain pure water and stored in the storage tube, and the use of the pure water is reasonably controlled, so that the waste of pure water energy is avoided, the product quality is further improved on the basis of improving the energy utilization rate, and the production cost is saved.
Description
Technical Field
The invention relates to a chlor-alkali industrial technology, in particular to a pure water recycling device in chlor-alkali production.
Background
The main flow of the production of the chlor-alkali is that the refined brine produced by the brine is electrolyzed to generate three substances, namely electrolyte with sodium hydroxide and sodium chloride as main components and chlorine and hydrogen. The ion membrane electrolysis needs a large amount of pure water to be matched with electrolysis, so the pure water is a consumed energy source in the normal production operation of the ion membrane, and the research and the development of the technology for recycling the pure water are particularly important.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pure water recycling device in chlor-alkali production, which inputs sodium chloride electrolyte generated by a chlor-alkali reaction tank into an evaporation tank, and collects pure water generated by evaporation and filtration into a pure water collection tank. When the pure water detector in the chlor-alkali reaction tank detects that the pure water is insufficient, the pure water detector controls the third valve and the third output pump, and the pure water in the water storage tank is input into the chlor-alkali reaction tank through the water return pipe.
The pure water recycling device in the chlor-alkali production is realized by the following technical scheme: comprises a chlor-alkali reaction tank, an evaporation tank, a water storage tank, an air escape pipe, a water outlet pipe A, a water outlet pipe B, a water return pipe and a pure water input pipe;
the top of the chlor-alkali reaction tank is provided with an air escape pipe and a pure water input pipe; an ionic membrane reaction tank is arranged at the bottom of the chlor-alkali reaction tank; a water outlet pipe A is arranged on one side of the bottom of the chlor-alkali reaction tank; the water outlet pipe is connected with the evaporating pot; one side of the evaporation tank is provided with a water outlet pipe B; the water outlet pipe B is connected with the water storage tank; the water storage tank is provided with a water return pipe; the other side of the water return pipe is connected with the top of the chlor-alkali reaction tank 1.
As the preferred technical scheme, a first valve and a first water delivery pump are arranged on a water outlet pipe A connected between the chlor-alkali reaction tank and the evaporating tank.
As the preferred technical scheme, a second valve and a second output pump are arranged on a water outlet pipe B connected between the evaporation tank and the water storage tank.
As the preferred technical scheme, a third valve and a third output pump are arranged on a water return pipe connected between the water storage tank and the chlor-alkali reaction tank.
As a preferred technical scheme, a pure water detector is arranged at the bottom of the chlor-alkali reaction tank.
As the preferred technical scheme, intelligent controllers are installed in the third valve and the third output pump.
As a preferred technical scheme, the pure water detector is mutually related to a third valve and a third output pump which are provided with an intelligent controller.
The invention has the beneficial effects that:
1. inputting the generated sodium chloride electrolyte into an evaporation tank by adopting an ionic membrane reaction tank in a chlor-alkali reaction tank, and collecting the pure water generated by evaporation and filtration into a pure water collection tank; the pure water collection tank can be continuously used in the ionic membrane reaction tank, so that the problems of overlarge energy consumption and energy waste in chlor-alkali production are solved.
2. When the pure water detector in the chlor-alkali reaction tank detects that pure water is not enough, the pure water detector controls the third valve and the third output pump, pure water in the water storage tank is input into the chlor-alkali reaction tank through the water return pipe, and the problems of the surplus of pure water in the manual detection water storage tank and the pure water input of automatic integration are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a pure water recycling device in chlor-alkali production of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the pure water recycling device in chlor-alkali production of the present invention comprises a chlor-alkali reaction tank 1, an evaporation tank 2, a water storage tank 14, an air escape pipe 3, a water outlet pipe a5, a water outlet pipe B13, a water return pipe 8 and a pure water input pipe 15;
the top of the chlor-alkali reaction tank 1 is provided with an air escape pipe 3 and a pure water input pipe 15; the bottom of the chlor-alkali reaction tank 1 is provided with an ionic membrane reaction tank 4; a water outlet pipe A5 is arranged on one side of the bottom of the chlor-alkali reaction tank 1; the water outlet pipe 5 is connected with the evaporating pot 2; one side of the evaporation tank 2 is provided with a water outlet pipe B13; the water outlet pipe B13 is connected with the water storage tank 14; the water storage tank 14 is provided with a water return pipe 8; the other side of the water return pipe 8 is connected with the top of the chlor-alkali reaction tank 1.
In the embodiment, a water outlet pipe A5 connected between the chlor-alkali reaction tank 1 and the evaporation tank 2 is provided with a first valve 7 and a first water pump 6; a water outlet pipe B13 connected between the evaporation tank 2 and the water storage tank 14 is provided with a second valve 12 and a second output pump 11; a third valve 10 and a third output pump 9 are arranged on a water return pipe connected between the water storage tank 14 and the chlor-alkali reaction tank 1.
In the embodiment, the bottom of the chlor-alkali reaction tank 1 is provided with a pure water detector 5; intelligent controllers are arranged in the third valve 10 and the third output pump 9; the pure water detector 5 is mutually associated with a third valve 10 and a third output pump 9 which are provided with an intelligent controller; when the pure water detector detects that the pure water in the chlor-alkali reaction tank 1 is insufficient, the third valve and the third output pump are controlled, and the pure water in the water storage tank is input into the chlor-alkali reaction tank through the water return pipe.
The working process is as follows:
a pure water input pipe arranged at the top of the chlor-alkali reaction tank inputs pure water into the ionic membrane reaction tank, chlorine and hydrogen produced by chlor-alkali reaction in the ionic membrane reaction tank are discharged through a gas escape valve, and electrolyte of sodium chloride is input into the evaporation tank through a water outlet pipe A; the evaporation tank inputs the obtained pure water into the water storage tank through a water outlet pipe B; when the pure water detector in the chlor-alkali reaction tank detects that pure water is insufficient, the pure water detector controls the third valve and the third output pump, and pure water in the water storage tank is input into the chlor-alkali reaction tank through the water return pipe. This device had both utilized the discharged sodium chloride electrolyte of chlor-alkali reaction process, and in evaporating the pure water and saving the storage tube to sodium chloride electrolyte simultaneously again, the while is to the use rationalization control of pure water again, the waste of the pure water energy that can not cause, further promotes product quality, practices thrift manufacturing cost on the basis of improving energy utilization.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (7)
1. The utility model provides a pure water recycle device in chlor-alkali production which characterized in that: comprises a chlor-alkali reaction tank (1), an evaporation tank (2), a water storage tank (14), an air escape pipe (3), a water outlet pipe A (5), a water outlet pipe B (13), a water return pipe (8) and a pure water input pipe (15);
the top of the chlor-alkali reaction tank (1) is provided with an air leakage pipe (3) and a pure water input pipe (15); the bottom of the chlor-alkali reaction tank (1) is provided with an ionic membrane reaction tank (4); a water outlet pipe A (5) is arranged on one side of the bottom of the chlor-alkali reaction tank (1); the water outlet pipe (5) is connected with the evaporating pot (2); a water outlet pipe B (13) is arranged on one side of the evaporation tank (2); the water outlet pipe B (13) is connected with a water storage tank (14); the water storage tank (14) is provided with a water return pipe (8); the other side of the water return pipe (8) is connected with the top of the chlor-alkali reaction tank (1).
2. The pure water recycling device in chlor-alkali production according to claim 1, characterized in that: a first valve (7) and a first water delivery pump (6) are arranged on a water outlet pipe A (5) connected between the chlor-alkali reaction tank (1) and the evaporating tank (2).
3. The pure water recycling device in chlor-alkali production according to claim 1, characterized in that: and a second valve (12) and a second output pump (11) are arranged on a water outlet pipe B (13) connected between the evaporation tank (2) and the water storage tank (14).
4. The pure water recycling device in chlor-alkali production according to claim 1, characterized in that: and a third valve (10) and a third output pump (9) are arranged on a water return pipe connected between the water storage tank (14) and the chlor-alkali reaction tank (1).
5. The pure water recycling device in chlor-alkali production according to claim 1, characterized in that: and a pure water detector (5) is arranged at the bottom of the chlor-alkali reaction tank (1).
6. The pure water recycling device in chlor-alkali production according to claim 1, characterized in that: and intelligent controllers are arranged in the third valve (10) and the third output pump (9).
7. The pure water recycling device in chlor-alkali production as claimed in claim 5 and claim 6, characterized in that: the pure water detector (5) is mutually associated with a third valve (10) and a third output pump (9) which are provided with an intelligent controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156428.5A CN112981457A (en) | 2021-02-04 | 2021-02-04 | Pure water recycling device in chlor-alkali production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156428.5A CN112981457A (en) | 2021-02-04 | 2021-02-04 | Pure water recycling device in chlor-alkali production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112981457A true CN112981457A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110156428.5A Pending CN112981457A (en) | 2021-02-04 | 2021-02-04 | Pure water recycling device in chlor-alkali production |
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| CN (1) | CN112981457A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3616328A (en) * | 1968-09-23 | 1971-10-26 | Hooker Chemical Corp | Catholyte recirculation in diaphragm chlor-alkali cells |
| US4459188A (en) * | 1982-09-13 | 1984-07-10 | Texas Brine Corporation | Brine systems for chlor-alkali membrane cells |
| CN101086066A (en) * | 2006-06-07 | 2007-12-12 | 李洪宝 | Use of alkali-containing condensed water in alkali-chloride industry |
| CN101694000A (en) * | 2009-09-30 | 2010-04-14 | 莫新来 | Method for concentrating dilute brine |
| CN103114298A (en) * | 2013-02-20 | 2013-05-22 | 闫晓琦 | Membrane distillation (MD) coupled alkali preparation technique |
| CN103388157A (en) * | 2013-08-07 | 2013-11-13 | 内蒙古君正化工有限责任公司 | Condensed water recycling system for evaporation process |
| CN103628085A (en) * | 2013-11-22 | 2014-03-12 | 新汶矿业集团有限责任公司泰山盐化工分公司 | Method for cyclic utilization of water resources in chlor-alkali production |
| CN204714645U (en) * | 2015-06-01 | 2015-10-21 | 深圳市爱地环境技术开发有限公司 | A kind of miniature energy-saving vacuum normal temperature waste evaporator plant |
| CN207483865U (en) * | 2017-11-22 | 2018-06-12 | 河北八维化工有限公司 | A kind of electrolytic brine circulatory system for ion film caustic soda |
| CN209537180U (en) * | 2019-02-01 | 2019-10-25 | 中盐吉兰泰氯碱化工有限公司 | Evaporation of chlorine-alkali process condensate water reclaiming system |
| CN210796655U (en) * | 2019-11-20 | 2020-06-19 | 昊华宇航化工有限责任公司 | Caustic soda evaporation alkaline condensate recycling system |
| CN210963954U (en) * | 2019-09-17 | 2020-07-10 | 长治市霍家工业有限公司 | Pure water recycling device in chlor-alkali production |
-
2021
- 2021-02-04 CN CN202110156428.5A patent/CN112981457A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3616328A (en) * | 1968-09-23 | 1971-10-26 | Hooker Chemical Corp | Catholyte recirculation in diaphragm chlor-alkali cells |
| US4459188A (en) * | 1982-09-13 | 1984-07-10 | Texas Brine Corporation | Brine systems for chlor-alkali membrane cells |
| CN101086066A (en) * | 2006-06-07 | 2007-12-12 | 李洪宝 | Use of alkali-containing condensed water in alkali-chloride industry |
| CN101694000A (en) * | 2009-09-30 | 2010-04-14 | 莫新来 | Method for concentrating dilute brine |
| CN103114298A (en) * | 2013-02-20 | 2013-05-22 | 闫晓琦 | Membrane distillation (MD) coupled alkali preparation technique |
| CN103388157A (en) * | 2013-08-07 | 2013-11-13 | 内蒙古君正化工有限责任公司 | Condensed water recycling system for evaporation process |
| CN103628085A (en) * | 2013-11-22 | 2014-03-12 | 新汶矿业集团有限责任公司泰山盐化工分公司 | Method for cyclic utilization of water resources in chlor-alkali production |
| CN204714645U (en) * | 2015-06-01 | 2015-10-21 | 深圳市爱地环境技术开发有限公司 | A kind of miniature energy-saving vacuum normal temperature waste evaporator plant |
| CN207483865U (en) * | 2017-11-22 | 2018-06-12 | 河北八维化工有限公司 | A kind of electrolytic brine circulatory system for ion film caustic soda |
| CN209537180U (en) * | 2019-02-01 | 2019-10-25 | 中盐吉兰泰氯碱化工有限公司 | Evaporation of chlorine-alkali process condensate water reclaiming system |
| CN210963954U (en) * | 2019-09-17 | 2020-07-10 | 长治市霍家工业有限公司 | Pure water recycling device in chlor-alkali production |
| CN210796655U (en) * | 2019-11-20 | 2020-06-19 | 昊华宇航化工有限责任公司 | Caustic soda evaporation alkaline condensate recycling system |
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Application publication date: 20210618 |