CN113443981A - Industrial preparation method of sodium acetate solution - Google Patents
Industrial preparation method of sodium acetate solution Download PDFInfo
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- CN113443981A CN113443981A CN202110842887.9A CN202110842887A CN113443981A CN 113443981 A CN113443981 A CN 113443981A CN 202110842887 A CN202110842887 A CN 202110842887A CN 113443981 A CN113443981 A CN 113443981A
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- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 title claims abstract description 68
- 239000001632 sodium acetate Substances 0.000 title claims abstract description 68
- 235000017281 sodium acetate Nutrition 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 47
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 49
- 239000013535 sea water Substances 0.000 claims abstract description 24
- 239000006227 byproduct Substances 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 228
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 159
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 83
- 239000012153 distilled water Substances 0.000 claims description 74
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 64
- 239000007787 solid Substances 0.000 claims description 64
- 239000003054 catalyst Substances 0.000 claims description 38
- 238000004821 distillation Methods 0.000 claims description 38
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 36
- 229960000583 acetic acid Drugs 0.000 claims description 32
- 239000012362 glacial acetic acid Substances 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 24
- 239000000706 filtrate Substances 0.000 claims description 23
- 238000010521 absorption reaction Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 18
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 18
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 18
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 15
- 229920001817 Agar Polymers 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229920002472 Starch Polymers 0.000 claims description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 14
- 239000008272 agar Substances 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 14
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 14
- 239000008107 starch Substances 0.000 claims description 14
- 235000019698 starch Nutrition 0.000 claims description 14
- 239000011701 zinc Substances 0.000 claims description 14
- 229910052725 zinc Inorganic materials 0.000 claims description 14
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 14
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 14
- 229960001763 zinc sulfate Drugs 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 13
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 11
- 150000001768 cations Chemical class 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000009776 industrial production Methods 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 6
- 229940117975 chromium trioxide Drugs 0.000 description 4
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000004278 EU approved seasoning Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000006172 buffering agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
-
- 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
- C25B1/14—Alkali metal compounds
- C25B1/16—Hydroxides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention belongs to the field of preparation of sodium acetate, in particular to an industrial preparation method of a sodium acetate solution, which aims at the problems of increase of the preparation cost of the existing sodium acetate and lack of perfect treatment of pollution generated in the preparation process, and provides the following scheme, wherein the scheme comprises the following steps: s2: preparing a saturated sodium chloride solution: putting seawater into a distiller to prepare saturated sodium chloride solution and recycling the byproducts, wherein S3: electrolyzing a saturated sodium chloride solution: the invention aims to reduce the purchase of raw materials, reduce the production cost, improve the production rate and reduce the environmental pollution by changing the preparation method of sodium acetate.
Description
Technical Field
The invention relates to the technical field of sodium acetate preparation, in particular to an industrial preparation method of a sodium acetate solution.
Background
Sodium acetate is also called sodium acetate, is mainly used for buffering agents and general analysis agents of printing and dyeing industry, medicine, photography, electroplating, chemical reagents, organic synthesis and seasonings, and can also be used for adjusting pH in an adjusting tank in industrial sewage.
However, as the downstream demand of the sodium acetate industry increases and the market scale increases, the production cost of sodium acetate increases and the pollution generated in the production process lacks perfect treatment, so that an industrial production method of sodium acetate solution is proposed to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems that the preparation cost of sodium acetate is increased and pollution generated in the preparation process is lack of perfect treatment in the prior art, and provides an industrial preparation method of sodium acetate solution.
In order to achieve the purpose, the invention adopts the following technical scheme:
an industrial preparation method of sodium acetate solution comprises the following steps:
s1: preparing materials: glacial acetic acid with the concentration of 98%, seawater, distilled water, sodium hydroxide solid, vanadium pentoxide solid, nickel oxide solid, chromium oxide solid, lime water solution, starch KI solution, agar, saturated KCL solution, copper sulfate solution, zinc sulfate solution, copper plate, zinc plate and carbon rod;
s2: preparing a saturated sodium chloride solution: putting seawater into a distilling machine to prepare saturated sodium chloride solution and recycling the by-products;
s3: electrolyzing a saturated sodium chloride solution: adding the prepared saturated sodium chloride solution into an anode area of an electrolytic cell, adding sodium hydroxide solid and distilled water into a cathode area of the electrolytic cell, electrifying to prepare a high-concentration sodium hydroxide solution, and treating a generated byproduct;
s4: preparing a sodium acetate solution: adding distilled water, glacial acetic acid and a catalyst into the prepared high-concentration sodium hydroxide solution, and stirring while adding;
s5: and (3) distillation and purification: filtering the prepared sodium acetate solution to leave a filtrate, then putting the filtrate into distillation equipment, measuring the concentration of the solution, and removing redundant water in the sodium acetate solution to obtain the sodium acetate solution;
preferably, in S1, the volume ratio of the 98% glacial acetic acid, seawater, distilled water, sodium hydroxide solid, vanadium pentoxide solid, nickel oxide solid, and chromium oxide solid is 3: 8: 8: 1: 2: 2: 2;
preferably, in S2, the distillation temperature of the distillation apparatus is set to 100 ℃ or higher, and the saturated sodium chloride solution obtained by distillation is cooled, wherein the distillation apparatus is composed of a distillation apparatus, a condensation apparatus and a collection apparatus, the condensation apparatus allows distilled water to flow through the apparatus from bottom to top, and the distilled water collected in the collection apparatus is recycled;
preferably, in S3, the prepared saturated sodium chloride solution is added into the anode region of the electrolytic cell, an absorption cell and a checking device are connected to the outlet of the anode of the electrolytic cell, wherein the lime aqueous solution is placed in the absorption cell to absorb the generated chlorine gas, a starch KI solution is added into the checking device to check whether the chlorine gas is completely absorbed, real-time observation is performed manually, if the solution in the checking device turns blue, the lime aqueous solution in the absorption cell needs to be replaced immediately, and sodium hydroxide solid and distilled water are added into the cathode region, wherein the added sodium hydroxide solid and distilled water are mixed in advance according to a volume ratio of 1: 5, preparing a mixed solution, forming a cathode and anode area in an electrolytic cell device by adopting a two-chamber method, arranging a cation membrane in the middle, adopting carbon rods as electrodes at two poles, and externally connecting a zinc-copper primary cell as a power supply, wherein the anode of the primary cell consists of a copper plate and a copper sulfate solution, the cathode consists of a zinc plate and a zinc sulfate solution, the two electrodes are respectively placed in two containers and are connected through a salt bridge consisting of agar and a saturated KCL solution, and a rectifying circuit is adopted for supplying power when preparing a high-concentration sodium hydroxide solution;
preferably, in S4, adding distilled water, glacial acetic acid, and a catalyst into the prepared high-concentration sodium hydroxide solution, wherein the adding sequence must be that distilled water is added first, glacial acetic acid is added, and the catalyst is added at last, the catalyst is a mixed preparation of vanadium pentoxide, nickel oxide, and chromium oxide, the materials are added while stirring, a stirrer is used for stirring, the rotation speed of the stirrer is set to 80-120 revolutions per minute during stirring, and hot air is blown into the stirring device by a centrifugal blower;
preferably, in S5, the prepared sodium acetate solution is filtered to leave a filtrate, the solid obtained by filtering is used as a catalyst, the filtrate is washed with distilled water and then used as a raw material for the next preparation, the obtained filtrate is placed in a distillation device to determine the concentration of the solution to be prepared, excess water in the sodium acetate solution is removed by evaporation concentration and cooling, wherein the concentration of the generated sodium acetate solution is determined by a hydrometer method, a weight table is used for multiple times of determination, and the mass percentage concentration of the solution corresponding to the data is searched from a corresponding chemical table and compared until more than three times of solution concentration data are stabilized at the required value, so that the preparation is completed.
Compared with the prior art, the invention has the beneficial effects that:
1. the raw material preparation is carried out by seawater, so that the raw material purchase is reduced, the production cost is reduced, and meanwhile, the catalyst is added, so that the production rate is improved.
2. And by-products generated in the production process are treated by adopting various devices and then discharged, and compared with the existing preparation method, the method reduces the environmental pollution.
The invention aims to reduce the purchase of raw materials, reduce the production cost, improve the production rate and reduce the environmental pollution by changing the preparation method of sodium acetate and treating byproducts.
Drawings
FIG. 1 is a flow chart of an industrial process for the preparation of a sodium acetate solution according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example one
Referring to fig. 1, an industrial preparation method of a sodium acetate solution includes the steps of:
s1: preparing materials: the material volume ratio of the glacial acetic acid, the seawater, the distilled water, the sodium hydroxide solid, the vanadium pentoxide solid, the nickel oxide solid, the chromium trioxide solid, the lime water solution, the starch KI solution, the agar, the saturated KCL solution, the copper sulfate solution, the zinc sulfate solution, the copper plate, the zinc plate and the carbon rod with the concentration of 98% is 3: 8: 8: 1: 2: 2: 2;
s2: preparing a saturated sodium chloride solution: placing seawater into a distilling machine to prepare a saturated sodium chloride solution and recycle the by-products, setting the distilling temperature of the distilling machine to be 100 ℃, and cooling the saturated sodium chloride solution obtained by distillation, wherein the distilling machine consists of a distilling device, a condensing device and a collecting device, the condensing device allows distilled water to flow through the device in a bottom-up manner, and finally the distilled water collected in the collecting device is recycled;
s3: electrolyzing a saturated sodium chloride solution: adding the prepared saturated sodium chloride solution into an anode area of an electrolytic cell, adding sodium hydroxide solid and distilled water into a cathode area of the electrolytic cell, electrifying to prepare high-concentration sodium hydroxide solution, treating generated byproducts simultaneously, connecting an absorption cell and an inspection device at an anode gas outlet of the electrolytic cell by using a treatment device, wherein lime water solution is put into the absorption cell, absorbing the generated chlorine, adding starch KI solution into the inspection device to inspect whether the chlorine is completely absorbed, carrying out real-time observation by manpower, immediately replacing the lime water solution in the absorption cell if the solution turns blue in the inspection device, and adding the sodium hydroxide solid and the distilled water into the cathode area according to the volume ratio in advance of 1: 5, preparing a mixed solution, forming a cathode and anode area in an electrolytic cell device by adopting a two-chamber method, arranging a cation membrane in the middle, adopting carbon rods as electrodes at two poles, and externally connecting a zinc-copper primary cell as a power supply, wherein the anode of the primary cell consists of a copper plate and a copper sulfate solution, the cathode consists of a zinc plate and a zinc sulfate solution, the two electrodes are respectively placed in two containers and are connected through a salt bridge consisting of agar and a saturated KCL solution, and a rectifying circuit is adopted for supplying power when preparing a high-concentration sodium hydroxide solution;
s4: preparing a sodium acetate solution: adding distilled water, glacial acetic acid and a catalyst into the prepared high-concentration sodium hydroxide solution, wherein the adding sequence must be that the distilled water is added firstly, the glacial acetic acid is added, and the catalyst is added finally, the catalyst is a mixed preparation of vanadium pentoxide, nickel oxide and chromium oxide, the materials are added and stirred simultaneously when being added, a stirrer is adopted for stirring, the rotating speed of the stirrer is set to be 80 revolutions per minute when stirring, and simultaneously, a centrifugal blower is adopted to blow hot air into a stirring device;
s5: and (3) distillation and purification: filtering the prepared sodium acetate solution to leave a filtrate, taking the solid obtained by filtering as a catalyst, washing the catalyst with distilled water, and then taking the washed filtrate as a raw material to prepare the next time, putting the obtained filtrate into a distillation device, determining the concentration of the solution to be prepared, removing redundant water in the sodium acetate solution by evaporation concentration and cooling, wherein a hydrometer method is adopted to determine the concentration of the generated sodium acetate solution, a weight table is used for multiple times of determination during determination, and the mass percent concentration of the solution corresponding to the data is searched from a corresponding chemical table to be compared until more than three times of solution concentration data are stabilized at the required value, thereby completing the preparation.
Example two
Referring to fig. 1, an industrial preparation method of a sodium acetate solution includes the steps of:
s1: preparing materials: glacial acetic acid with the concentration of 98%, seawater, distilled water, sodium hydroxide solid, lime water solution, starch KI solution, agar, saturated KCL solution, copper sulfate solution, zinc sulfate solution, copper plate, zinc plate and carbon rod, wherein the volume ratio of the glacial acetic acid with the concentration of 98%, the seawater, the distilled water and the sodium hydroxide solid is 3: 8: 8: 1;
s2: preparing a saturated sodium chloride solution: placing seawater into a distilling machine to prepare a saturated sodium chloride solution and recycle the by-products, setting the distilling temperature of the distilling machine to be 110 ℃, and cooling the saturated sodium chloride solution obtained by distillation, wherein the distilling machine consists of a distilling device, a condensing device and a collecting device, the condensing device allows distilled water to flow through the device in a bottom-up manner, and finally the distilled water collected in the collecting device is recycled;
s3: electrolyzing a saturated sodium chloride solution: adding the prepared saturated sodium chloride solution into an anode area of an electrolytic cell, adding sodium hydroxide solid and distilled water into a cathode area of the electrolytic cell, electrifying to prepare high-concentration sodium hydroxide solution, treating generated byproducts simultaneously, connecting an absorption cell and an inspection device at an anode gas outlet of the electrolytic cell by using a treatment device, wherein lime water solution is put into the absorption cell, absorbing the generated chlorine, adding starch KI solution into the inspection device to inspect whether the chlorine is completely absorbed, carrying out real-time observation by manpower, immediately replacing the lime water solution in the absorption cell if the solution turns blue in the inspection device, and adding the sodium hydroxide solid and the distilled water into the cathode area according to the volume ratio in advance of 1: 5, preparing a mixed solution, forming a cathode and anode area in an electrolytic cell device by adopting a two-chamber method, arranging a cation membrane in the middle, adopting carbon rods as electrodes at two poles, and externally connecting a zinc-copper primary cell as a power supply, wherein the anode of the primary cell consists of a copper plate and a copper sulfate solution, the cathode consists of a zinc plate and a zinc sulfate solution, the two electrodes are respectively placed in two containers and are connected through a salt bridge consisting of agar and a saturated KCL solution, and a rectifying circuit is adopted for supplying power when preparing a high-concentration sodium hydroxide solution;
s4: preparing a sodium acetate solution: adding distilled water and glacial acetic acid into the prepared high-concentration sodium hydroxide solution, wherein the adding sequence must be that the distilled water is added firstly, then the glacial acetic acid is added, stirring is carried out while adding materials, a stirrer is adopted for stirring, the rotating speed of the stirrer is set to be 100 revolutions per minute during stirring, and simultaneously a centrifugal blower is adopted for blowing hot air into a stirring device;
s5: and (3) distillation and purification: filtering the prepared sodium acetate solution to leave a filtrate, putting the obtained filtrate into distillation equipment, determining the concentration of the solution to be prepared, evaporating, concentrating and cooling to remove redundant water in the sodium acetate solution, wherein the concentration of the generated sodium acetate solution is determined by adopting a hydrometer method, a weight table is used for performing multiple times of determination during determination, and solution mass percentage concentrations corresponding to data are searched from a corresponding chemical table for comparison until more than three times of solution concentration data are stabilized at a required value, thereby completing the preparation.
EXAMPLE III
Referring to fig. 1, an industrial preparation method of a sodium acetate solution includes the steps of:
s1: preparing materials: the material volume ratio of the glacial acetic acid with the concentration of 98%, the seawater, the distilled water, the sodium hydroxide solid, the vanadium pentoxide solid, the nickel oxide solid, the chromium oxide solid, the agar, the saturated KCL solution, the copper sulfate solution, the zinc sulfate solution, the copper plate, the zinc plate and the carbon rod is 3: 8: 8: 1: 2: 2: 2;
s2: preparing a saturated sodium chloride solution: placing seawater into a distilling machine to prepare a saturated sodium chloride solution and recycle the by-products, setting the distilling temperature of the distilling machine to be 105 ℃, and cooling the saturated sodium chloride solution obtained by distillation, wherein the distilling machine consists of a distilling device, a condensing device and a collecting device, the condensing device allows distilled water to flow through the device in a bottom-up manner, and finally the distilled water collected in the collecting device is recycled;
s3: electrolyzing a saturated sodium chloride solution: adding the prepared saturated sodium chloride solution into an anode area of an electrolytic cell, adding sodium hydroxide solid and distilled water into a cathode area of the electrolytic cell, electrifying to prepare high-concentration sodium hydroxide solution, treating the generated by-products, connecting an absorption cell and a detection device at an anode gas outlet of the electrolytic cell by using a treatment device, wherein the sodium hydroxide solid and the distilled water added into the cathode area are mixed in advance according to the volume ratio of 1: 5, preparing a mixed solution, forming a cathode and anode area in an electrolytic cell device by adopting a two-chamber method, arranging a cation membrane in the middle, adopting carbon rods as electrodes at two poles, and externally connecting a zinc-copper primary cell as a power supply, wherein the anode of the primary cell consists of a copper plate and a copper sulfate solution, the cathode consists of a zinc plate and a zinc sulfate solution, the two electrodes are respectively placed in two containers and are connected through a salt bridge consisting of agar and a saturated KCL solution, and a rectifying circuit is adopted for supplying power when preparing a high-concentration sodium hydroxide solution;
s4: preparing a sodium acetate solution: adding distilled water, glacial acetic acid and a catalyst into the prepared high-concentration sodium hydroxide solution, wherein the adding sequence must be that the distilled water is added firstly, the glacial acetic acid is added, and the catalyst is added finally, the catalyst is a mixed preparation of vanadium pentoxide, nickel oxide and chromium sesquioxide, the materials are added and stirred simultaneously, a stirrer is adopted for stirring, the rotating speed of the stirrer is set to be 120 revolutions per minute during stirring, and simultaneously a centrifugal blower is adopted to blow hot air into a stirring device;
s5: and (3) distillation and purification: filtering the prepared sodium acetate solution to leave a filtrate, taking the solid obtained by filtering as a catalyst, washing the catalyst with distilled water, and then taking the washed filtrate as a raw material to prepare the next time, putting the obtained filtrate into a distillation device, determining the concentration of the solution to be prepared, removing redundant water in the sodium acetate solution by evaporation concentration and cooling, wherein a hydrometer method is adopted to determine the concentration of the generated sodium acetate solution, a weight table is used for multiple times of determination during determination, and the mass percent concentration of the solution corresponding to the data is searched from a corresponding chemical table to be compared until more than three times of solution concentration data are stabilized at the required value, thereby completing the preparation.
Example four
Referring to fig. 1, an industrial preparation method of a sodium acetate solution includes the steps of:
s1: preparing materials: the material volume ratio of the glacial acetic acid, the seawater, the distilled water, the sodium hydroxide solid, the vanadium pentoxide solid, the nickel oxide solid, the chromium oxide solid, the lime water solution and the starch KI solution with the concentration of 98% is 2: 6: 6: 2: 3: 1: 1;
s2: preparing a saturated sodium chloride solution: placing seawater into a distilling machine to prepare a saturated sodium chloride solution and recycle by-products, setting the distilling temperature of the distilling machine to be more than 120 ℃, and cooling the saturated sodium chloride solution obtained by distillation, wherein the distilling machine consists of a distilling device, a condensing device and a collecting device, the condensing device allows distilled water to flow through the device in a bottom-up manner, and finally the distilled water collected in the collecting device is recycled;
s3: electrolyzing a saturated sodium chloride solution: adding the prepared saturated sodium chloride solution into an anode area of an electrolytic cell, adding sodium hydroxide solid and distilled water into a cathode area of the electrolytic cell, electrifying to prepare high-concentration sodium hydroxide solution, treating generated byproducts simultaneously, connecting an absorption cell and an inspection device at an anode gas outlet of the electrolytic cell by using a treatment device, wherein lime water solution is put into the absorption cell, absorbing the generated chlorine, adding starch KI solution into the inspection device to inspect whether the chlorine is completely absorbed, carrying out real-time observation by manpower, immediately replacing the lime water solution in the absorption cell if the solution turns blue in the inspection device, and adding the sodium hydroxide solid and the distilled water into the cathode area according to the volume ratio in advance of 1: 5, preparing the prepared mixed solution, forming a cathode-anode region in the electrolytic cell device by adopting a two-chamber method, arranging a cation membrane in the middle, and supplying power by adopting a rectifying circuit when preparing the high-concentration sodium hydroxide solution;
s4: preparing a sodium acetate solution: adding distilled water, glacial acetic acid and a catalyst into the prepared high-concentration sodium hydroxide solution, wherein the adding sequence must be that the distilled water is added firstly, the glacial acetic acid is added, and the catalyst is added finally, the catalyst is a mixed preparation of vanadium pentoxide, nickel oxide and chromium oxide, the materials are added and stirred simultaneously, a stirrer is adopted for stirring, the rotating speed of the stirrer is set to 90 revolutions per minute during stirring, and meanwhile, a centrifugal blower is adopted to blow hot air into a stirring device;
s5: and (3) distillation and purification: filtering the prepared sodium acetate solution to leave a filtrate, taking the solid obtained by filtering as a catalyst, washing the catalyst with distilled water, and then taking the washed filtrate as a raw material to prepare the next time, putting the obtained filtrate into a distillation device, determining the concentration of the solution to be prepared, removing redundant water in the sodium acetate solution by evaporation concentration and cooling, wherein a hydrometer method is adopted to determine the concentration of the generated sodium acetate solution, a weight table is used for multiple times of determination during determination, and the mass percent concentration of the solution corresponding to the data is searched from a corresponding chemical table to be compared until more than three times of solution concentration data are stabilized at the required value, thereby completing the preparation.
EXAMPLE five
Referring to fig. 1, an industrial preparation method of a sodium acetate solution includes the steps of:
s1: preparing materials: the material volume ratio of the glacial acetic acid, the seawater, the distilled water, the sodium hydroxide solid, the vanadium pentoxide solid, the nickel oxide solid, the chromium trioxide solid, the lime water solution, the starch KI solution, the agar, the saturated KCL solution, the copper sulfate solution, the zinc sulfate solution, the copper plate, the zinc plate and the carbon rod with the concentration of 98% is 3: 8: 8: 1: 2: 2: 2;
s2: preparing a saturated sodium chloride solution: placing seawater into a distilling machine to prepare a saturated sodium chloride solution and recycle the by-products, setting the distilling temperature of the distilling machine to be 125 ℃, and cooling the saturated sodium chloride solution obtained by distillation, wherein the distilling machine consists of a distilling device, a condensing device and a collecting device, the condensing device allows distilled water to flow through the device in a bottom-up manner, and finally the distilled water collected in the collecting device is recycled;
s3: electrolyzing a saturated sodium chloride solution: adding the prepared saturated sodium chloride solution into an anode area of an electrolytic cell, adding sodium hydroxide solid and distilled water into a cathode area of the electrolytic cell, electrifying to prepare high-concentration sodium hydroxide solution, treating generated byproducts simultaneously, connecting an absorption cell and an inspection device at an anode gas outlet of the electrolytic cell by using a treatment device, wherein lime water solution is put into the absorption cell, absorbing the generated chlorine, adding starch KI solution into the inspection device to inspect whether the chlorine is completely absorbed, carrying out real-time observation by manpower, immediately replacing the lime water solution in the absorption cell if the solution turns blue in the inspection device, and adding the sodium hydroxide solid and the distilled water into the cathode area according to the volume ratio in advance of 1: 5, preparing a mixed solution, forming a cathode and anode area in an electrolytic cell device by adopting a two-chamber method, arranging a cation membrane in the middle, adopting carbon rods as electrodes at two poles, and externally connecting a zinc-copper primary cell as a power supply, wherein the anode of the primary cell consists of a copper plate and a copper sulfate solution, the cathode consists of a zinc plate and a zinc sulfate solution, the two electrodes are respectively placed in two containers and are connected through a salt bridge consisting of agar and a saturated KCL solution, and a rectifying circuit is adopted for supplying power when preparing a high-concentration sodium hydroxide solution;
s4: preparing a sodium acetate solution: adding distilled water, glacial acetic acid and a catalyst into the prepared high-concentration sodium hydroxide solution, wherein the adding sequence comprises adding distilled water, adding glacial acetic acid and adding the catalyst, the catalyst is a mixed preparation of vanadium pentoxide, nickel oxide and chromium oxide, and the materials are added while stirring;
s5: and (3) distillation and purification: filtering the prepared sodium acetate solution to leave a filtrate, taking the solid obtained by filtering as a catalyst, washing the catalyst with distilled water, then taking the washed catalyst as a raw material again for next preparation, putting the obtained filtrate into distillation equipment, determining the concentration of the required prepared solution, and removing the redundant water in the sodium acetate solution through evaporation concentration and cooling.
Comparative example 1
The difference from the first embodiment is that, S1: preparing materials: the material volume ratio of the glacial acetic acid, the seawater, the distilled water, the sodium hydroxide solid, the vanadium pentoxide solid, the nickel oxide solid, the chromium trioxide solid, the lime water solution, the starch KI solution, the agar, the saturated KCL solution, the copper sulfate solution, the zinc sulfate solution, the copper plate, the zinc plate and the carbon rod with the concentration of 98% is 2: 7: 7: 1: 1: 1: 2, S2: preparing a saturated sodium chloride solution: the seawater is put into a distilling machine to prepare saturated sodium chloride solution and recycle the by-products, the distilling temperature of the distilling machine is set to 130 ℃, and the saturated sodium chloride solution obtained by distillation is cooled, wherein the distilling machine comprises a distilling device, a condensing device and a collecting device, the condensing device enables distilled water to flow through the device from bottom to top, and finally the distilled water collected in the collecting device is recycled, and the rest is the same as the embodiment I.
Comparative example No. two
The difference from the first embodiment is that, S2: preparing a saturated sodium chloride solution: putting seawater into a distiller to prepare a saturated sodium chloride solution and recycle by-products, setting the distillation temperature of the distiller to be 115 ℃, and cooling the saturated sodium chloride solution obtained by distillation, wherein the distiller consists of a distillation device, a condensing device and a collecting device, the condensing device allows distilled water to flow through the device in a bottom-up manner, and finally the distilled water collected in the collecting device is recycled, S4: preparing a sodium acetate solution: adding distilled water, glacial acetic acid and a catalyst into the prepared high-concentration sodium hydroxide solution, wherein the adding sequence must be that the distilled water is added firstly, the glacial acetic acid is added, and the catalyst is added finally, the catalyst is selected from a mixed preparation of vanadium pentoxide, nickel oxide and chromium sesquioxide, the materials are added and stirred simultaneously, a stirrer is adopted for stirring, the rotating speed of the stirrer is set to be 110 revolutions per minute during stirring, meanwhile, a centrifugal blower is adopted to blow hot air into a stirring device, and the rest is the same as that in the first embodiment.
Comparative example No. three
The difference from the first embodiment is that, S1: preparing materials: the material volume ratio of the glacial acetic acid, the seawater, the distilled water, the sodium hydroxide solid, the vanadium pentoxide solid, the nickel oxide solid, the chromium trioxide solid, the lime water solution, the starch KI solution, the agar, the saturated KCL solution, the copper sulfate solution, the zinc sulfate solution, the copper plate, the zinc plate and the carbon rod with the concentration of 98% is 5: 9: 8: 1: 2: 1: 2, S2: preparing a saturated sodium chloride solution: putting seawater into a distiller to prepare a saturated sodium chloride solution and recycle by-products, setting the distillation temperature of the distiller to 130 ℃, and cooling the saturated sodium chloride solution obtained by distillation, wherein the distiller consists of a distillation device, a condensing device and a collecting device, the condensing device allows distilled water to flow through the device in a bottom-up manner, and finally the distilled water collected in the collecting device is recycled, S4: preparing a sodium acetate solution: adding distilled water, glacial acetic acid and a catalyst into the prepared high-concentration sodium hydroxide solution, wherein the adding sequence must be that the distilled water is added firstly, the glacial acetic acid is added, and the catalyst is added finally, the catalyst is selected from a mixed preparation of vanadium pentoxide, nickel oxide and chromium sesquioxide, the materials are added and stirred simultaneously, a stirrer is adopted for stirring, the rotating speed of the stirrer is set to be 115 revolutions per minute during stirring, meanwhile, a centrifugal blower is adopted to blow hot air into a stirring device, and the rest is the same as that in the first embodiment.
Examples of the experiments
The preparation methods of sodium acetate proposed in the first, second, third, fourth and fifth examples and the first, second and third comparative examples were tested, and the preparation cost and the production rate were recorded as follows:
the invention is an industrial preparation method of sodium acetate solution, which can reduce the production cost of sodium acetate preparation and improve the preparation speed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. An industrial preparation method of a sodium acetate solution is characterized by comprising the following steps:
s1: preparing materials: glacial acetic acid with the concentration of 98%, seawater, distilled water, sodium hydroxide solid, vanadium pentoxide solid, nickel oxide solid, chromium oxide solid, lime water solution, starch KI solution, agar, saturated KCL solution, copper sulfate solution, zinc sulfate solution, copper plate, zinc plate and carbon rod;
s2: preparing a saturated sodium chloride solution: putting seawater into a distilling machine to prepare saturated sodium chloride solution and recycling the by-products;
s3: electrolyzing a saturated sodium chloride solution: adding the prepared saturated sodium chloride solution into an anode area of an electrolytic cell, adding sodium hydroxide solid and distilled water into a cathode area of the electrolytic cell, electrifying to prepare a high-concentration sodium hydroxide solution, and treating a generated byproduct;
s4: preparing a sodium acetate solution: adding distilled water, glacial acetic acid and a catalyst into the prepared high-concentration sodium hydroxide solution, and stirring while adding;
s5: and (3) distillation and purification: filtering the prepared sodium acetate solution to leave a filtrate, then putting the filtrate into distillation equipment, measuring the concentration of the solution, and removing redundant water in the sodium acetate solution to obtain the sodium acetate solution.
2. The industrial preparation method of a sodium acetate solution as claimed in claim 1, wherein in the S1, the volume ratio of the glacial acetic acid with the concentration of 98%, seawater, distilled water, sodium hydroxide solid, vanadium pentoxide solid, nickel oxide solid and chromium oxide solid is 3: 8: 8: 1: 2: 2: 2.
3. the method according to claim 1, wherein in S2, the distillation temperature of a distillation apparatus is set to 100 ℃ or higher, and the saturated sodium chloride solution obtained by distillation is cooled, wherein the distillation apparatus comprises a distillation apparatus, a condensation apparatus and a collection apparatus, the condensation apparatus allows distilled water to flow through the apparatus from bottom to top, and the distilled water collected in the collection apparatus is recycled.
4. The industrial process for preparing a sodium acetate solution as claimed in claim 1, wherein in S3, the prepared saturated sodium chloride solution is fed into the anode region of the electrolytic cell, an absorption cell and a checking device are connected to the outlet of the anode of the electrolytic cell, wherein the absorption cell is filled with lime water solution to absorb the generated chlorine gas, the checking device is filled with a solution of starch KI to check whether the chlorine gas is completely absorbed, the detection device is manually observed in real time, and the lime water solution in the absorption cell needs to be replaced immediately if the solution in the checking device turns blue.
5. The industrial production method of a sodium acetate solution as claimed in claim 1, characterized in that in S3, solid sodium hydroxide and distilled water are added in the cathode region, wherein the solid sodium hydroxide and distilled water are added in advance in a volume ratio of 1: 5 preparing the mixed solution.
6. The industrial process for preparing a sodium acetate solution as claimed in claim 1, wherein in S3, the inside of the electrolytic cell unit is formed into a cathode and anode region by a two-chamber method, and a cation membrane is provided in the middle, the two electrodes are carbon rods as electrodes, and a zinc-copper primary cell is externally connected as a power supply, wherein the positive electrode of the primary cell is composed of a copper plate and a copper sulfate solution, the negative electrode is composed of a zinc plate and a zinc sulfate solution, the two electrodes are respectively placed in two containers and connected through a salt bridge composed of agar and a saturated KCL solution, and a rectification circuit is used for supplying power when preparing the high-concentration sodium hydroxide solution.
7. The industrial preparation method of a sodium acetate solution as claimed in claim 1, wherein in S4, the catalyst is a mixed preparation of vanadium pentoxide, nickel oxide and chromium oxide.
8. The method of claim 1, wherein in step S4, distilled water, glacial acetic acid and catalyst are added to the prepared high-concentration sodium hydroxide solution in the order of adding distilled water, glacial acetic acid and catalyst.
9. The method according to claim 1, wherein in S4, the stirring is performed with a stirrer at a speed of 80-120 rpm while the material is added, and hot air is blown into the stirrer by a centrifugal blower.
10. The industrial process for preparing a sodium acetate solution as claimed in claim 1, wherein in S5, the prepared sodium acetate solution is filtered to leave a filtrate, the solid obtained by filtering is used as a catalyst, the filtrate is washed with distilled water and then used as a raw material to perform the next preparation, the obtained filtrate is put into distillation equipment to determine the concentration of the prepared solution, excess water in the sodium acetate solution is removed by evaporation concentration and cooling, wherein the concentration of the generated sodium acetate solution is determined by hydrometer method, a weight table is used for multiple times of determination during the determination, and the mass percent concentration of the solution corresponding to the data is checked from the corresponding chemical table and compared until more than three times of the concentration data of the solution is stabilized at the required value, thereby completing the preparation.
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