CN110756006A - Quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt - Google Patents
Quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt Download PDFInfo
- Publication number
- CN110756006A CN110756006A CN201911075921.3A CN201911075921A CN110756006A CN 110756006 A CN110756006 A CN 110756006A CN 201911075921 A CN201911075921 A CN 201911075921A CN 110756006 A CN110756006 A CN 110756006A
- Authority
- CN
- China
- Prior art keywords
- quenching
- temperature
- flue gas
- parts
- inorganic salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010791 quenching Methods 0.000 title claims abstract description 92
- 230000000171 quenching effect Effects 0.000 title claims abstract description 59
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 31
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 19
- 229910017053 inorganic salt Inorganic materials 0.000 title claims abstract description 19
- 239000002912 waste gas Substances 0.000 title claims abstract description 19
- 238000004064 recycling Methods 0.000 title abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000003546 flue gas Substances 0.000 claims abstract description 58
- 239000007921 spray Substances 0.000 claims abstract description 25
- 239000011819 refractory material Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000000779 smoke Substances 0.000 claims abstract description 12
- 238000000889 atomisation Methods 0.000 claims abstract description 8
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 8
- 239000000839 emulsion Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 34
- 229910052684 Cerium Inorganic materials 0.000 claims description 32
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 32
- 239000002002 slurry Substances 0.000 claims description 30
- 229920005989 resin Polymers 0.000 claims description 26
- 239000011347 resin Substances 0.000 claims description 26
- 239000004695 Polyether sulfone Substances 0.000 claims description 25
- 239000011230 binding agent Substances 0.000 claims description 25
- 229920006393 polyether sulfone Polymers 0.000 claims description 25
- 239000000835 fiber Substances 0.000 claims description 21
- 230000010287 polarization Effects 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002250 absorbent Substances 0.000 claims description 18
- 230000002745 absorbent Effects 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 13
- 241000609240 Ambelania acida Species 0.000 claims description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- 239000010905 bagasse Substances 0.000 claims description 12
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 230000005684 electric field Effects 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- GJJSDZSDOYNJSW-UHFFFAOYSA-N lanthanum(3+);borate Chemical compound [La+3].[O-]B([O-])[O-] GJJSDZSDOYNJSW-UHFFFAOYSA-N 0.000 claims description 8
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 claims description 8
- HGQSXVKHVMGQRG-UHFFFAOYSA-N dioctyltin Chemical compound CCCCCCCC[Sn]CCCCCCCC HGQSXVKHVMGQRG-UHFFFAOYSA-N 0.000 claims description 7
- 229910001623 magnesium bromide Inorganic materials 0.000 claims description 7
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 7
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 7
- 239000010453 quartz Substances 0.000 claims description 7
- IKEHOXWJQXIQAG-UHFFFAOYSA-N 2-tert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1 IKEHOXWJQXIQAG-UHFFFAOYSA-N 0.000 claims description 6
- 229910001200 Ferrotitanium Inorganic materials 0.000 claims description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000110 cooling liquid Substances 0.000 claims description 6
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000010419 fine particle Substances 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 6
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 6
- DDFYFBUWEBINLX-UHFFFAOYSA-M tetramethylammonium bromide Chemical compound [Br-].C[N+](C)(C)C DDFYFBUWEBINLX-UHFFFAOYSA-M 0.000 claims description 6
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000003513 alkali Substances 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 230000008929 regeneration Effects 0.000 abstract description 3
- 238000011069 regeneration method Methods 0.000 abstract description 3
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002253 acid Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000001913 cellulose Substances 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 6
- 239000000725 suspension Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical group C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000001724 microfibril Anatomy 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000185 dioxinlike effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 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
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000412 polyarylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- -1 silicate ions Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
- B01D2258/0291—Flue gases from waste incineration plants
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201910622089 | 2019-07-10 | ||
CN2019106220898 | 2019-07-10 |
Publications (2)
Publication Number | Publication Date |
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CN110756006A true CN110756006A (en) | 2020-02-07 |
CN110756006B CN110756006B (en) | 2021-09-28 |
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CN201911075921.3A Active CN110756006B (en) | 2019-07-10 | 2019-11-06 | Quenching absorption tower for treating waste gas generated by recycling hazardous waste inorganic salt |
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Citations (12)
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US20110203664A1 (en) * | 2008-10-31 | 2011-08-25 | Malinda Howell | Photovoltaic Cell Module And Method Of Forming |
CN103022190A (en) * | 2011-09-21 | 2013-04-03 | 杜邦公司 | Inflaming retarding backing plate for solar cell module |
CN103191734A (en) * | 2013-03-15 | 2013-07-10 | 无锡威孚环保催化剂有限公司 | Three-element catalyst for treating automobile exhaust |
CN203099873U (en) * | 2013-02-17 | 2013-07-31 | 张毅 | Quench tower device |
CN104508090A (en) * | 2012-06-04 | 2015-04-08 | 埃克森美孚研究工程公司 | Hydrodesulfurization, deoxygenation and dewaxing processes with water stable catalysts for biomass-containing hydrocarbon feedstocks |
CN106077438A (en) * | 2016-06-22 | 2016-11-09 | 马鞍山市创诚铸造有限公司 | A kind of novel environment friendly molding sand using nano zircite modified animal glue as bonding agent and preparation method thereof |
CN206103578U (en) * | 2016-08-11 | 2017-04-19 | 宜兴市鼎益环保科技有限公司 | Half -dried quench tower atomizing water flow control system |
CN106661428A (en) * | 2014-07-31 | 2017-05-10 | Hoya株式会社 | Method for producing polishing slurry, polishing abrasive grains, polishing slurry, and method for producing glass substrate |
CN206504641U (en) * | 2017-02-14 | 2017-09-19 | 西安山岳环保科技有限公司 | A kind of pharmaceutical preparation processing unit half dry type chilling tower |
CN107442119A (en) * | 2017-08-10 | 2017-12-08 | 石家庄铁道大学 | A kind of cerium oxide/zirconium oxide paper mold catalyst and preparation method thereof |
CN109354808A (en) * | 2018-11-20 | 2019-02-19 | 东莞市正品五金电子有限公司 | A kind of PVC preparation process for electric wire plastic grain |
CN109929162A (en) * | 2019-02-25 | 2019-06-25 | 安徽宏凤空调滤网有限公司 | Potent corrosion-resistant rubber and plastic composite insulation material of one kind and preparation method thereof |
-
2019
- 2019-11-06 CN CN201911075921.3A patent/CN110756006B/en active Active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US20110203664A1 (en) * | 2008-10-31 | 2011-08-25 | Malinda Howell | Photovoltaic Cell Module And Method Of Forming |
CN103022190A (en) * | 2011-09-21 | 2013-04-03 | 杜邦公司 | Inflaming retarding backing plate for solar cell module |
CN104508090A (en) * | 2012-06-04 | 2015-04-08 | 埃克森美孚研究工程公司 | Hydrodesulfurization, deoxygenation and dewaxing processes with water stable catalysts for biomass-containing hydrocarbon feedstocks |
CN203099873U (en) * | 2013-02-17 | 2013-07-31 | 张毅 | Quench tower device |
CN103191734A (en) * | 2013-03-15 | 2013-07-10 | 无锡威孚环保催化剂有限公司 | Three-element catalyst for treating automobile exhaust |
CN106661428A (en) * | 2014-07-31 | 2017-05-10 | Hoya株式会社 | Method for producing polishing slurry, polishing abrasive grains, polishing slurry, and method for producing glass substrate |
CN106077438A (en) * | 2016-06-22 | 2016-11-09 | 马鞍山市创诚铸造有限公司 | A kind of novel environment friendly molding sand using nano zircite modified animal glue as bonding agent and preparation method thereof |
CN206103578U (en) * | 2016-08-11 | 2017-04-19 | 宜兴市鼎益环保科技有限公司 | Half -dried quench tower atomizing water flow control system |
CN206504641U (en) * | 2017-02-14 | 2017-09-19 | 西安山岳环保科技有限公司 | A kind of pharmaceutical preparation processing unit half dry type chilling tower |
CN107442119A (en) * | 2017-08-10 | 2017-12-08 | 石家庄铁道大学 | A kind of cerium oxide/zirconium oxide paper mold catalyst and preparation method thereof |
CN109354808A (en) * | 2018-11-20 | 2019-02-19 | 东莞市正品五金电子有限公司 | A kind of PVC preparation process for electric wire plastic grain |
CN109929162A (en) * | 2019-02-25 | 2019-06-25 | 安徽宏凤空调滤网有限公司 | Potent corrosion-resistant rubber and plastic composite insulation material of one kind and preparation method thereof |
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CN110756006B (en) | 2021-09-28 |
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Address after: 010030 Xinhong West Road, economic and Technological Development Zone, Bayannur City, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia Zhongtai Huijin Environmental Protection Technology Co.,Ltd. Address before: 010030 Hohhot, the Inner Mongolia Autonomous Region Yuquan District, Erdos Avenue, Jinyu Xintiandi C block 514 Patentee before: Inner Mongolia Zhongtai Huijin Environmental Protection Technology Co.,Ltd. |
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Effective date of registration: 20230506 Address after: Room 203, 2nd Floor, Building 6, Yard 28, Jingsheng South 1st Street, Tongzhou District, Beijing, 101102 Patentee after: Beijing Zhongtai Huijin Technical Service Co.,Ltd. Address before: 015000 Xinhong West Road, economic and Technological Development Zone, Bayannur City, Inner Mongolia Autonomous Region Patentee before: Inner Mongolia Zhongtai Huijin Environmental Protection Technology Co.,Ltd. |
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Effective date of registration: 20230713 Address after: 750336 Xinhong West Road, Bayannur Economic and Technological Development Zone, Inner Mongolia Patentee after: Inner Mongolia Zhongtai Huijin Environmental Protection Technology Co.,Ltd. Address before: Room 203, 2nd Floor, Building 6, Yard 28, Jingsheng South 1st Street, Tongzhou District, Beijing, 101102 Patentee before: Beijing Zhongtai Huijin Technical Service Co.,Ltd. |