CN101891648A - 乙酸与氨二步法制取高纯度乙腈的方法 - Google Patents
乙酸与氨二步法制取高纯度乙腈的方法 Download PDFInfo
- Publication number
- CN101891648A CN101891648A CN2009100518382A CN200910051838A CN101891648A CN 101891648 A CN101891648 A CN 101891648A CN 2009100518382 A CN2009100518382 A CN 2009100518382A CN 200910051838 A CN200910051838 A CN 200910051838A CN 101891648 A CN101891648 A CN 101891648A
- Authority
- CN
- China
- Prior art keywords
- acetonitrile
- tower
- ammonia
- ammonium acetate
- product
- 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
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 title claims abstract description 156
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 30
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 title abstract 12
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000005695 Ammonium acetate Substances 0.000 claims abstract description 29
- 229940043376 ammonium acetate Drugs 0.000 claims abstract description 29
- 235000019257 ammonium acetate Nutrition 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 16
- 238000010992 reflux Methods 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 241000282326 Felis catus Species 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000004821 distillation Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 239000008246 gaseous mixture Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 18
- 239000006227 byproduct Substances 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 8
- 238000007670 refining Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000002912 waste gas Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 238000001308 synthesis method Methods 0.000 abstract 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- FUFLCEKSBBHCMO-UHFFFAOYSA-N 11-dehydrocorticosterone Natural products O=C1CCC2(C)C3C(=O)CC(C)(C(CC4)C(=O)CO)C4C3CCC2=C1 FUFLCEKSBBHCMO-UHFFFAOYSA-N 0.000 description 1
- FPIPGXGPPPQFEQ-UHFFFAOYSA-N 13-cis retinol Natural products OCC=C(C)C=CC=C(C)C=CC1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 206010003694 Atrophy Diseases 0.000 description 1
- MFYSYFVPBJMHGN-ZPOLXVRWSA-N Cortisone Chemical compound O=C1CC[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 MFYSYFVPBJMHGN-ZPOLXVRWSA-N 0.000 description 1
- MFYSYFVPBJMHGN-UHFFFAOYSA-N Cortisone Natural products O=C1CCC2(C)C3C(=O)CC(C)(C(CC4)(O)C(=O)CO)C4C3CCC2=C1 MFYSYFVPBJMHGN-UHFFFAOYSA-N 0.000 description 1
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical class CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 1
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- FPIPGXGPPPQFEQ-BOOMUCAASA-N Vitamin A Natural products OC/C=C(/C)\C=C\C=C(\C)/C=C/C1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-BOOMUCAASA-N 0.000 description 1
- ROBVLQBZPQQRTQ-UHFFFAOYSA-N [N].C1=CN=NN=C1 Chemical compound [N].C1=CN=NN=C1 ROBVLQBZPQQRTQ-UHFFFAOYSA-N 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- FPIPGXGPPPQFEQ-OVSJKPMPSA-N all-trans-retinol Chemical compound OC\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-OVSJKPMPSA-N 0.000 description 1
- 229940024606 amino acid Drugs 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- ZXVOCOLRQJZVBW-UHFFFAOYSA-N azane;ethanol Chemical compound N.CCO ZXVOCOLRQJZVBW-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- -1 carbon amine Chemical class 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229960004544 cortisone Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 239000013461 intermediate chemical Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- OSFBJERFMQCEQY-UHFFFAOYSA-N propylidene Chemical group [CH]CC OSFBJERFMQCEQY-UHFFFAOYSA-N 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 235000019155 vitamin A Nutrition 0.000 description 1
- 239000011719 vitamin A Substances 0.000 description 1
- 235000010374 vitamin B1 Nutrition 0.000 description 1
- 239000011691 vitamin B1 Substances 0.000 description 1
- 229940045997 vitamin a Drugs 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910051838.2A CN101891648B (zh) | 2009-05-22 | 2009-05-22 | 乙酸与氨二步法制取高纯度乙腈的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910051838.2A CN101891648B (zh) | 2009-05-22 | 2009-05-22 | 乙酸与氨二步法制取高纯度乙腈的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101891648A true CN101891648A (zh) | 2010-11-24 |
CN101891648B CN101891648B (zh) | 2014-01-08 |
Family
ID=43101025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200910051838.2A Active CN101891648B (zh) | 2009-05-22 | 2009-05-22 | 乙酸与氨二步法制取高纯度乙腈的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101891648B (zh) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104193651A (zh) * | 2014-08-15 | 2014-12-10 | 江苏九天高科技股份有限公司 | 一种用于醋酸氨化合成乙腈的精制方法及装置 |
CN105294494A (zh) * | 2015-12-05 | 2016-02-03 | 山东汇海医药化工有限公司 | 一种合成乙腈粗品氨气分离的方法 |
WO2016068068A1 (ja) * | 2014-10-31 | 2016-05-06 | 旭化成ケミカルズ株式会社 | アセトニトリルの製造方法 |
WO2016068062A1 (ja) * | 2014-10-31 | 2016-05-06 | 旭化成ケミカルズ株式会社 | アセトニトリルの製造方法 |
WO2016068061A1 (ja) * | 2014-10-31 | 2016-05-06 | 旭化成ケミカルズ株式会社 | アセトニトリルの製造方法 |
CN109836355A (zh) * | 2019-04-04 | 2019-06-04 | 中触媒新材料股份有限公司 | 一种用于乙酸氨化合成乙腈的装置和方法 |
CN111018741A (zh) * | 2019-11-29 | 2020-04-17 | 南通醋酸化工股份有限公司 | 一种制备乙腈的连续化新工艺 |
CN111233703A (zh) * | 2020-02-24 | 2020-06-05 | 山东金石新材料有限公司 | 一种二元伯胺生产设备及采用该设备生产二元伯胺的方法 |
CN112812038A (zh) * | 2020-12-30 | 2021-05-18 | 西安瑞联新材料股份有限公司 | 一种含工业乙腈废水的精制工艺 |
CN112812037A (zh) * | 2020-12-31 | 2021-05-18 | 南通醋酸化工股份有限公司 | 一种制备乙腈的方法 |
CN114773228A (zh) * | 2022-04-29 | 2022-07-22 | 河南新邦化工技术有限公司 | 一种精馏-熔融结晶耦合工艺精制乙腈的方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1440963A (zh) * | 2003-03-22 | 2003-09-10 | 张华堂 | 乙醇氨氧化法合成高纯度乙腈方法 |
RU2214396C2 (ru) * | 2000-12-28 | 2003-10-20 | Институт химии нефти СО РАН | Способ синтеза ацетонитрила |
-
2009
- 2009-05-22 CN CN200910051838.2A patent/CN101891648B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2214396C2 (ru) * | 2000-12-28 | 2003-10-20 | Институт химии нефти СО РАН | Способ синтеза ацетонитрила |
CN1440963A (zh) * | 2003-03-22 | 2003-09-10 | 张华堂 | 乙醇氨氧化法合成高纯度乙腈方法 |
Non-Patent Citations (2)
Title |
---|
S.I. GALANOV ET AL: "Catalytic Synthesis of Acetonitrile by Ammonolysis of Acetic Acid Over γ-Al2O3 Catalyst", 《KORUS》 * |
匡洞庭等: "乙腈合成新工艺简述", 《油气田地面工程》 * |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104193651A (zh) * | 2014-08-15 | 2014-12-10 | 江苏九天高科技股份有限公司 | 一种用于醋酸氨化合成乙腈的精制方法及装置 |
CN107108474A (zh) * | 2014-10-31 | 2017-08-29 | 旭化成株式会社 | 乙腈的制造方法 |
JPWO2016068062A1 (ja) * | 2014-10-31 | 2017-06-01 | 旭化成株式会社 | アセトニトリルの製造方法 |
CN107108474B (zh) * | 2014-10-31 | 2019-08-06 | 旭化成株式会社 | 乙腈的制造方法 |
CN107108475B (zh) * | 2014-10-31 | 2019-07-09 | 旭化成株式会社 | 乙腈的制造方法 |
CN107074749B (zh) * | 2014-10-31 | 2019-07-16 | 旭化成株式会社 | 乙腈的制造方法 |
JPWO2016068061A1 (ja) * | 2014-10-31 | 2017-06-22 | 旭化成株式会社 | アセトニトリルの製造方法 |
JPWO2016068068A1 (ja) * | 2014-10-31 | 2017-07-20 | 旭化成株式会社 | アセトニトリルの製造方法 |
CN107074749A (zh) * | 2014-10-31 | 2017-08-18 | 旭化成株式会社 | 乙腈的制造方法 |
CN107108475A (zh) * | 2014-10-31 | 2017-08-29 | 旭化成株式会社 | 乙腈的制造方法 |
WO2016068061A1 (ja) * | 2014-10-31 | 2016-05-06 | 旭化成ケミカルズ株式会社 | アセトニトリルの製造方法 |
WO2016068062A1 (ja) * | 2014-10-31 | 2016-05-06 | 旭化成ケミカルズ株式会社 | アセトニトリルの製造方法 |
WO2016068068A1 (ja) * | 2014-10-31 | 2016-05-06 | 旭化成ケミカルズ株式会社 | アセトニトリルの製造方法 |
CN105294494A (zh) * | 2015-12-05 | 2016-02-03 | 山东汇海医药化工有限公司 | 一种合成乙腈粗品氨气分离的方法 |
CN105294494B (zh) * | 2015-12-05 | 2017-12-19 | 山东汇海医药化工有限公司 | 一种合成乙腈粗品氨气分离的方法 |
CN109836355A (zh) * | 2019-04-04 | 2019-06-04 | 中触媒新材料股份有限公司 | 一种用于乙酸氨化合成乙腈的装置和方法 |
CN111018741A (zh) * | 2019-11-29 | 2020-04-17 | 南通醋酸化工股份有限公司 | 一种制备乙腈的连续化新工艺 |
CN111233703A (zh) * | 2020-02-24 | 2020-06-05 | 山东金石新材料有限公司 | 一种二元伯胺生产设备及采用该设备生产二元伯胺的方法 |
CN112812038A (zh) * | 2020-12-30 | 2021-05-18 | 西安瑞联新材料股份有限公司 | 一种含工业乙腈废水的精制工艺 |
CN112812037A (zh) * | 2020-12-31 | 2021-05-18 | 南通醋酸化工股份有限公司 | 一种制备乙腈的方法 |
CN112812037B (zh) * | 2020-12-31 | 2023-07-18 | 南通醋酸化工股份有限公司 | 一种制备乙腈的方法 |
CN114773228A (zh) * | 2022-04-29 | 2022-07-22 | 河南新邦化工技术有限公司 | 一种精馏-熔融结晶耦合工艺精制乙腈的方法 |
Also Published As
Publication number | Publication date |
---|---|
CN101891648B (zh) | 2014-01-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101891648B (zh) | 乙酸与氨二步法制取高纯度乙腈的方法 | |
CN101830829B (zh) | 乙酸一步氨化法合成乙腈的方法 | |
CN111004148B (zh) | 一种气相法制备6-氨基己腈的方法 | |
CN102502707A (zh) | 从含氢氰酸混合气中提纯氢氰酸的方法 | |
CN113501770B (zh) | 一种乙腈精制方法 | |
CN112079725A (zh) | 一种生产己二胺的方法 | |
CN103880690A (zh) | 一种甘氨酸的环保清洁生产方法 | |
CN105585501A (zh) | 乙二胺生产方法 | |
TWI394739B (zh) | 伸茬基二胺之製法 | |
CN103274913A (zh) | 一种甲基异丁基酮生产工艺及其设备 | |
CN105001055A (zh) | 基于混合溶剂作为萃取剂的异丙醇-乙腈共沸物精馏分离方法 | |
CN105585503B (zh) | 以乙醇胺和液氨为原料生产乙二胺的方法 | |
CN102659650A (zh) | Dl-甲硫氨酸盐的制备装置及方法 | |
CN104557457A (zh) | 丁醛加氢生产丁醇的反应精馏方法及装置 | |
CN109438216B (zh) | 一种高纯度异辛酸的制备方法 | |
RU2454403C1 (ru) | Способ получения карбамида | |
CN101920938B (zh) | 一种氯化亚砜的精馏方法 | |
JP5069222B2 (ja) | 水性カルバミン酸アンモニウム流れを濃縮するための方法 | |
CN106278913A (zh) | 生产乙醇胺的方法 | |
CN214422545U (zh) | 一种6-氨基己腈加氢生产己二胺的连续装置 | |
CN109627172A (zh) | 采用萃取-精馏处理废水的乙胺生产系统及工艺 | |
CN110878006B (zh) | 一种乙醇和乙酸乙酯的分离方法和装置 | |
CN1871213A (zh) | 连续制备n-甲基-2-吡咯烷酮(nmp)的方法 | |
CN108129330B (zh) | 一种环丙胺连续化生产系统和生产方法 | |
CN105439821B (zh) | 醋酸甲酯加氢制乙醇分离过程的工艺方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20170519 Address after: 257500 Fine Chemical Industrial Park, Shengtuo Town, Kenli County, Dongying, Shandong Patentee after: DONGYING HEYI CHEMICAL CO., LTD. Address before: 200136, room 48, Lane 1395, Lane 202, Yunshan Road, Shanghai, Pudong New Area Patentee before: Yu Jingdong |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method for preparing high-purity acetonitrile from acetic acid and ammonia by two steps Effective date of registration: 20181207 Granted publication date: 20140108 Pledgee: Dongying Bank Co., Ltd. Petroleum University Branch Pledgor: DONGYING HEYI CHEMICAL CO., LTD. Registration number: 2018990001169 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191120 Granted publication date: 20140108 Pledgee: Dongying Bank Co., Ltd. Petroleum University Branch Pledgor: DONGYING HEYI CHEMICAL CO., LTD. Registration number: 2018990001169 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method for preparing high-purity acetonitrile from acetic acid and ammonia by two steps Effective date of registration: 20191120 Granted publication date: 20140108 Pledgee: Dongying Bank Co., Ltd. Petroleum University Branch Pledgor: DONGYING HEYI CHEMICAL CO., LTD. Registration number: Y2019990000551 |
|
CP03 | Change of name, title or address | ||
CP03 | Change of name, title or address |
Address after: 257500 Shengtuo fine chemical park, Kenli District, Dongying City, Shandong Province (east of Heyi road and north of Shengjing Road, Shengtuo Industrial Park) Patentee after: Shandong Heyi Gas Co., Ltd Address before: 257500 Fine Chemical Industrial Park, Shengtuo Town, Kenli County, Dongying, Shandong Patentee before: Dongying Heyi Chemical Co.,Ltd. |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201224 Granted publication date: 20140108 Pledgee: Dongying Bank Co Ltd Petroleum University Branch Pledgor: Shandong Heyi Gas Co., Ltd Registration number: Y2019990000551 |
|
PM01 | Change of the registration of the contract for pledge of patent right | ||
PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20201224 Registration number: Y2019990000551 Pledgor after: Shandong Heyi Gas Co., Ltd Pledgor before: Dongying Heyi Chemical Co.,Ltd. |