CN113131031A - Method for preparing ultra-low mercury catalyst by recycling waste batteries - Google Patents
Method for preparing ultra-low mercury catalyst by recycling waste batteries Download PDFInfo
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- CN113131031A CN113131031A CN202110387829.1A CN202110387829A CN113131031A CN 113131031 A CN113131031 A CN 113131031A CN 202110387829 A CN202110387829 A CN 202110387829A CN 113131031 A CN113131031 A CN 113131031A
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- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 62
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000003054 catalyst Substances 0.000 title claims abstract description 49
- 239000010926 waste battery Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004064 recycling Methods 0.000 title claims abstract description 25
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000843 powder Substances 0.000 claims abstract description 37
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000284 extract Substances 0.000 claims abstract description 32
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 24
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 23
- 239000010941 cobalt Substances 0.000 claims abstract description 23
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 23
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 23
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 22
- 239000011701 zinc Substances 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 25
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 12
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 12
- RCTYPNKXASFOBE-UHFFFAOYSA-M chloromercury Chemical group [Hg]Cl RCTYPNKXASFOBE-UHFFFAOYSA-M 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 229910021380 Manganese Chloride Inorganic materials 0.000 claims description 6
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 claims description 6
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 6
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011565 manganese chloride Substances 0.000 claims description 6
- 235000002867 manganese chloride Nutrition 0.000 claims description 6
- 229940099607 manganese chloride Drugs 0.000 claims description 6
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 239000011592 zinc chloride Substances 0.000 claims description 6
- 235000005074 zinc chloride Nutrition 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000003786 synthesis reaction Methods 0.000 abstract description 5
- 238000006555 catalytic reaction Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000005997 Calcium carbide Substances 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 229910052987 metal hydride Inorganic materials 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Catalysts (AREA)
Abstract
本发明公开了一种回收废旧电池制备超低汞触媒的方法。以拆解废旧电池所得的电池粉为原料，与稀盐酸在氧化的条件下进行萃取，得到萃取液；按重量计，加入调整剂，调整萃取液中的主要元素汞、锌、锰、铜、镉、镍和钴的比例为3‑5∶2‑6∶2‑6∶1‑5∶1‑5∶0.1‑2∶0.1‑2，得调整溶液，加入活性炭浸泡、干燥，制得氯乙烯合成催化用的超低汞触媒。通过对废旧电池中的有价金属元素进行分离，制备得到氯乙烯合成催化剂，实现废旧电池的回收利用。The invention discloses a method for preparing an ultra-low mercury catalyst by recycling waste batteries. The battery powder obtained by dismantling the waste battery is used as the raw material, and extracted with dilute hydrochloric acid under the condition of oxidation to obtain an extract; by weight, an adjusting agent is added to adjust the main elements mercury, zinc, manganese, copper, The ratio of cadmium, nickel and cobalt is 3-5: 2-6: 2-6: 1-5: 1-5: 0.1-2: 0.1-2, to adjust the solution, add activated carbon to soak and dry to obtain vinyl chloride Ultra-low mercury catalyst for synthetic catalysis. By separating the valuable metal elements in the waste battery, the vinyl chloride synthesis catalyst is prepared, and the recycling and utilization of the waste battery is realized.
Description
Technical Field
The invention relates to a method for preparing an ultra-low mercury catalyst by recycling waste batteries, belonging to the technical field of recycling of waste batteries.
Background
China is the largest world for battery production and consumption, and the yield of primary batteries has far exceeded the U.S. and japan, and is the first world; the secondary battery production also has been in japan and korea only and, after that, is the third world. In 2011, the yield of the battery in China reaches about 372.66 hundred million, wherein 341.6 hundred million primary batteries and 341.4 hundred million secondary batteries (1.4 hundred million lead-acid batteries and 29.66 hundred million lithium-ion batteries) are used. With the wide application and technical update of secondary batteries in industries such as smart phones, digital cameras, new energy vehicles and the like, waste batteries are inevitably generated, so that the recycling of the waste batteries is very important.
At present, the recovery and utilization of waste batteries generally includes roasting and reducing elemental valuable metals in the waste batteries, for example, the recovery method of metal elements in the waste nickel-metal hydride batteries of chinese patent CN103031441B, and the recovery method of metal elements in the waste nickel-metal hydride batteries includes the steps of reducing and roasting, recovering rare earth elements, recovering manganese, recovering nickel and cobalt, and the like. Chinese patent CN101451246B discloses a method for recovering metals from waste nickel-cadmium batteries, which comprises contacting the waste residue obtained after removing organic substances from the waste nickel-cadmium batteries with a solution capable of sufficiently dissolving the metals in the waste residue into an ionic state, so that the metals in the waste residue exist in an ionic form; and then filtering to obtain filtrate, wherein the method further comprises electrolyzing the filtrate under the conditions that the current density is 80-120A/m2 and the pH value is below 2 to obtain the metal cadmium. The recovery of the waste battery has the problems of single recovery of valuable metals, insufficient utilization rate, higher cost and the like.
Disclosure of Invention
The invention aims to provide a method for preparing an ultra-low mercury catalyst by recycling waste batteries. The chloroethylene synthesis catalyst is prepared by separating valuable metal elements in the waste batteries, so that the waste batteries are recycled.
The technical scheme of the invention is as follows:
a method for preparing ultra-low mercury catalyst by recycling waste batteries is used for extracting and separating valuable elements from battery powder obtained by disassembling waste batteries to prepare ultra-low mercury catalyst synthesized by vinyl chloride, and comprises the following steps:
s1, stirring and extracting battery powder obtained by disassembling the waste batteries and dilute hydrochloric acid, and taking extract liquor;
s2, after filtering and separating the extract, analyzing the content of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract, adding a regulator by weight, and regulating the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract to 3-5: 2-6: 1-5: 0.1-2 to obtain a regulated solution;
and S3, adding activated carbon into the adjusted solution, soaking and drying to obtain the ultra-low mercury catalyst.
In the step s1, adding the battery powder and the dilute hydrochloric acid into a stirring tank, dropwise adding hydrogen peroxide at 40-70 ℃, stirring and reacting for 20-120 minutes until the battery powder is not dissolved any more, taking the supernatant, adding calcium carbonate powder, and removing sulfate ions to obtain the extract, wherein the concentration of the hydrochloric acid is 0.3-1 mol/L.
In the method for preparing the ultra-low mercury catalyst by recycling the waste batteries, in the step s1, the battery powder and the dilute hydrochloric acid are added into a stirring tank, hydrogen peroxide is dropwise added at 50-60 ℃ to react for 40-100 minutes under stirring, and the concentration of the hydrochloric acid is 0.5-0.8 mol/L.
In the method for preparing the ultra-low mercury catalyst by recycling the waste batteries, the regulator is mercury chloride, zinc chloride, manganese chloride, copper chloride, cadmium chloride, nickel chloride and cobalt chloride.
In the method for preparing the ultra-low mercury catalyst by recycling the waste batteries, the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the solution is adjusted to 3-4: 3-5: 2-4: 0.5-1.5.
According to the method for preparing the ultra-low mercury catalyst by recycling the waste batteries, the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the solution is adjusted to be 4: 5: 3: 1.
Has the advantages that:
the battery powder obtained by currently disassembling and recycling waste batteries contains: 10-12% of Mn; ni 32-35%; co 10-20%; in addition, the alloy also contains heavy metal elements such as copper, cadmium, mercury and the like and other impurity elements. The recovery cost of recovering a single metal is very high and uneconomical. The applicant found in previous studies that: the metal elements in the recovered waste batteries can be used for preparing the ultra-low mercury catalyst for synthesizing the chloroethylene after chlorination extraction.
Chloroethylene is a monomer of polyvinyl chloride (PVC) which is one of five synthetic resins in the world, and is mainly produced by a calcium carbide acetylene method and a petroleum ethylene method. The energy structure of China is rich in coal, lean oil and little gas, and it is determined that the calcium carbide acetylene method is a main process for producing vinyl chloride in China continuously in a long time in the future, namely mercury chloride catalyzes acetylene to react with hydrogen chloride to generate vinyl chloride. Under the international mercury constraint, a new high-efficiency ultralow-mercury catalyst needs to be developed to replace the traditional mercury chloride catalyst.
The research of the applicant finds that the metal elements in the battery powder obtained by disassembling and recovering the waste batteries can be used for preparing a multi-metal composite ultra-low mercury catalyst for a vinyl chloride catalyst, but the content of various elements in the battery powder recovered by different manufacturers and batches has certain difference, so that the invention mixes the battery powder and dilute hydrochloric acid, dropwise adds hydrogen peroxide, stirs and extracts to obtain a metal ion extraction liquid containing mercury, zinc, manganese, copper, cadmium, nickel and cobalt, adds a regulator according to the content of various ions in the extraction liquid, adjusts the proportion of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extraction liquid, and prepares the ultra-low mercury catalyst which can be used for vinyl chloride synthesis.
To further demonstrate the catalytic effect of the catalyst prepared by the present invention, the inventors prepared a batch of 5 tons of ultra-low mercury catalyst with the adjusted solution of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in a ratio of 4: 5: 3: 1, tested on the 66# converter of inner Mongolia chemical company Limited (Table 1, example 2), prepared 10 tons of ultra-low mercury catalyst with the adjusted solution in other ratios, and tested on the 56# and 68# converters of inner Mongolia chemical company Limited (Table 1, examples 1 and 3) to show that: the catalyst for synthesizing chloroethylene is prepared by using the battery powder obtained by disassembling the battery, when the chloroethylene is synthesized, the reaction temperature is 110-; the purity of the chloroethylene crude product after rectification reaches 99.99V/%. Can meet the production requirement of chloroethylene.
TABLE 1 test results of vinyl chloride Synthesis test
Analysis on the result of a chloroethylene synthesis test shown in Table 1 shows that the method for recovering the ultralow mercury catalyst prepared from the waste battery to produce chloroethylene has the reaction temperature of 110-; the purity of the chloroethylene crude product after rectification reaches 99.99V/%. Can meet the production requirement of chloroethylene.
The technical scheme of the invention provides a process method for preparing a chloroethylene catalyst by using battery powder and a catalyst proportion with high catalytic efficiency. The comprehensive recovery and high-efficiency utilization of metal elements in the battery powder are realized.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention. The structures or processes not specifically mentioned are conventional in the art.
Example (b): a method for preparing an ultra-low mercury catalyst by recycling waste batteries is used for extracting and separating valuable elements from battery powder obtained by disassembling the waste batteries to prepare a chloroethylene synthesized ultra-low mercury catalyst, and comprises the following steps:
s1, stirring and extracting battery powder obtained by disassembling the waste batteries and dilute hydrochloric acid, and taking extract liquor;
s2, after filtering and separating the extract, analyzing the content of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract, adding a regulator by weight, and regulating the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract to 3-5: 2-6: 1-5: 0.1-2 to obtain a regulated solution;
and S3, adding activated carbon into the adjusted solution, soaking and drying to obtain the ultra-low mercury catalyst.
And step s1, adding the battery powder and dilute hydrochloric acid into a stirring tank, dropwise adding hydrogen peroxide at the temperature of 40-70 ℃, stirring and reacting for 20-120 minutes, wherein the concentration of hydrochloric acid is 0.3-1mol/L, and adding calcium carbonate powder to remove sulfate ions to obtain an extract.
And step s1, adding the battery powder and dilute hydrochloric acid into a stirring tank, dropwise adding hydrogen peroxide at 50-60 ℃, and stirring for reaction for 40-100 minutes, wherein the concentration of hydrochloric acid is 0.5-0.8 mol/L.
The regulator is mercury chloride, zinc chloride, manganese chloride, copper chloride, cadmium chloride, nickel chloride and cobalt chloride.
More preferably, the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the adjustment solution is 3-4: 3-5: 2-4: 0.5-1.5. The optimal ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the adjusting solution is 4: 5: 3: 1.
The following examples are provided in connection with the specific cases below
Example 1.
A method for preparing ultra-low mercury catalyst by recycling waste batteries is used for extracting and separating valuable elements from battery powder obtained by disassembling waste batteries to prepare ultra-low mercury catalyst synthesized by vinyl chloride, and comprises the following steps:
s1, stirring and extracting battery powder obtained by disassembling the waste batteries and dilute hydrochloric acid, and taking extract liquor;
s2, after filtering and separating the extract, analyzing the content of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract, adding a regulator by weight, and regulating the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract to be 4: 2: 1: 0.1 to obtain a regulated solution;
and S3, adding activated carbon into the adjusted solution, soaking and drying to obtain the catalyst.
And step s1, adding the battery powder and dilute hydrochloric acid into a stirring tank, dropwise adding hydrogen peroxide at 50-60 ℃, and stirring for reaction for 40-100 minutes, wherein the concentration of hydrochloric acid is 0.5-0.8 mol/L. Adding calcium carbonate powder to remove sulfate ions to obtain an extract.
The regulator is mercury chloride, zinc chloride, manganese chloride, copper chloride, cadmium chloride, nickel chloride and cobalt chloride.
Example 2.
A method for preparing ultra-low mercury catalyst by recycling waste batteries is used for extracting and separating valuable elements from battery powder obtained by disassembling waste batteries to prepare ultra-low mercury catalyst synthesized by vinyl chloride, and comprises the following steps:
s1, stirring and extracting battery powder obtained by disassembling the waste batteries and dilute hydrochloric acid, and taking extract liquor;
s2, after filtering and separating the extract, analyzing the content of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract, adding a regulator by weight, and regulating the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract to be 4: 5: 3: 1 to obtain a regulated solution;
and S3, adding activated carbon into the adjusted solution, soaking and drying to obtain the catalyst.
In the method for preparing the ultra-low mercury catalyst by recycling the waste batteries, in the step s1, the battery powder and the dilute hydrochloric acid are added into a stirring tank, hydrogen peroxide is dropwise added at 60 ℃ to stir and react for 70 minutes, and the concentration of the hydrochloric acid is 0.7 mol/L. Adding calcium carbonate powder to remove sulfate ions to obtain an extract.
The regulator is mercury chloride, zinc chloride, manganese chloride, copper chloride, cadmium chloride, nickel chloride and cobalt chloride.
Example 3.
A method for preparing ultra-low mercury catalyst by recycling waste batteries is used for extracting and separating valuable elements from battery powder obtained by disassembling waste batteries to prepare ultra-low mercury catalyst synthesized by vinyl chloride, and comprises the following steps:
s1, stirring and extracting battery powder obtained by disassembling the waste batteries and dilute hydrochloric acid, and taking extract liquor;
s2, after filtering and separating the extract, analyzing the content of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract, adding a regulator by weight, and regulating the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract to be 3: 6: 5: 1 to obtain a regulated solution;
and S3, adding activated carbon into the adjusted solution, soaking and drying to obtain the catalyst.
And step s1, adding the battery powder and dilute hydrochloric acid into a stirring tank, dropwise adding hydrogen peroxide at 60 ℃, stirring and reacting for 80 minutes, wherein the concentration of hydrochloric acid is 0.6 mol/L. Adding calcium carbonate powder to remove sulfate ions to obtain an extract.
The regulator is mercury chloride, zinc chloride, manganese chloride, copper chloride, cadmium chloride, nickel chloride and cobalt chloride.
Claims (6)
1. A method for preparing ultra-low mercury catalyst by recycling waste batteries is characterized by comprising the following steps: the method for preparing the chloroethylene synthesized ultra-low mercury catalyst by extracting and separating valuable elements from battery powder obtained by disassembling waste batteries comprises the following steps:
s1, stirring and extracting battery powder obtained by disassembling the waste batteries and dilute hydrochloric acid, and taking extract liquor;
s2, after filtering and separating the extract, analyzing the content of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract, adding a regulator by weight, and regulating the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the extract to 3-5: 2-6: 1-5: 0.1-2 to obtain a regulated solution;
and S3, adding activated carbon into the adjusted solution, soaking and drying to obtain the ultra-low mercury catalyst.
2. The method for preparing ultra-low mercury catalyst by recycling waste batteries according to claim 1, which is characterized in that: and step s1, adding the battery powder and dilute hydrochloric acid into a stirring tank, dropwise adding hydrogen peroxide at 40-70 ℃, stirring and reacting for 20-120 minutes until the battery powder is not dissolved any more, wherein the concentration of the hydrochloric acid is 0.3-1mol/L, taking supernatant, and adding calcium carbonate powder to remove sulfate ions to obtain extract liquor.
3. The method for preparing the ultra-low mercury catalyst by recycling the waste batteries according to claim 2, which is characterized in that: and step s1, adding the battery powder and dilute hydrochloric acid into a stirring tank, dropwise adding hydrogen peroxide at 50-60 ℃, and stirring for reaction for 40-100 minutes, wherein the concentration of hydrochloric acid is 0.5-0.8 mol/L.
4. The method for preparing ultra-low mercury catalyst by recycling waste batteries according to claim 1, which is characterized in that: the regulator is mercury chloride, zinc chloride, manganese chloride, copper chloride, cadmium chloride, nickel chloride and cobalt chloride.
5. The method for preparing ultra-low mercury catalyst by recycling waste batteries according to claim 1, which is characterized in that: the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the adjusting solution is 3-4: 3-5: 2-4: 0.5-1.5.
6. The method for preparing ultra-low mercury catalyst by recycling waste batteries according to claim 5, which is characterized in that: the ratio of mercury, zinc, manganese, copper, cadmium, nickel and cobalt in the adjusting solution is 4: 5: 3: 1.
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