SU709161A1 - Method of regenerating catalyst for vinyl-acetate synthesis - Google Patents
Method of regenerating catalyst for vinyl-acetate synthesis Download PDFInfo
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- SU709161A1 SU709161A1 SU772556917A SU2556917A SU709161A1 SU 709161 A1 SU709161 A1 SU 709161A1 SU 772556917 A SU772556917 A SU 772556917A SU 2556917 A SU2556917 A SU 2556917A SU 709161 A1 SU709161 A1 SU 709161A1
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- catalyst
- vinyl
- synthesis
- regeneration
- acetate
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
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Изобретение относитс к способам регенерации катализаторов дл синтеза винилацетата, в частности катализаторов на основе ацетата однка на активированном угле.The invention relates to methods for the regeneration of catalysts for the synthesis of vinyl acetate, in particular single-acetate acetate catalysts on activated carbon.
Известен способ регенерации отработанных катализаторов синтеза винилацетата путем механического удалени внешнего сло катализатора при помощи виброгрохога в псевдоожиженном слое в токе вод ного пара или инертного газа при 400-900° С 1.A known method of regeneration of spent catalysts for the synthesis of vinyl acetate by mechanical removal of the outer catalyst layer with the help of a vibro-shock in a fluidized bed in a stream of water vapor or an inert gas at 400-900 ° C 1.
Известен также способ регенерации отработанных катализаторов синтеза винилацетата обработкой катализатора винилацетатом при 60° С и давлении 82 мм рт. ст. с последующим охлаждением и продувкой азотом 2.Also known is the method of regeneration of spent catalysts for the synthesis of vinyl acetate by treating the catalyst with vinyl acetate at 60 ° C and a pressure of 82 mm Hg. Art. followed by cooling and purging with nitrogen 2.
Наиболее близким к изобретению по технической сущности и достигаемому результату вл .четс способ регенерации катализатора дл синтеза винилацегага, приготовленного пропиткой гранул активированного угл ацегатом цинка , согласно которому регенерацию катализатора провод т вод ным паром в кип щем слое при 600-700°С. Затем провод т допропмтку катализатора ацетатом цинка 3.The closest to the invention to the technical essence and the achieved result is the method of catalyst regeneration for the synthesis of vinyl acegum prepared by impregnating activated carbon granules with zinc acegate, according to which catalyst regeneration is carried out with water vapor in a fluidized bed at 600-700 ° C. Then, a catalyst of zinc acetate 3 was added.
Основным недостатком указанного способа регенерации катализатора вл етс то, что акгивность катализатора восстанавливаетс неполностью .The main disadvantage of this method of catalyst regeneration is that the catalyst aggressiveness is not fully restored.
Целью изобретени вл етс восстановление активности отработанного катализатора до первоначальной .The aim of the invention is to restore the activity of the spent catalyst to the original.
Указанна цель достигаетс описываемым способом регенерации катализатора, заключающимс в высокотемпературной обработке отработанного катализатора перегретым вод ным паром с добавкой 1-5 об.% аммиака с последующей пропиткой катализатора раствором ацетата цинка.This goal is achieved by the described catalyst regeneration method, which involves high-temperature treatment of the spent catalyst with superheated steam with the addition of 1–5% by volume ammonia, followed by impregnation of the catalyst with a solution of zinc acetate.
Отличительным признаком способа вл етс обработка катализатора перегретым вод ным паром с добавкой 1-5 об.% аммиака, что позвол ет восстановить активность отработанного катализатора до уровн первоначальной.A distinctive feature of the process is the treatment of the catalyst with superheated steam with the addition of 1–5% by volume of ammonia, which makes it possible to restore the activity of the spent catalyst to the initial level.
Сущность изобретени заключаетс в том, что пррце.сс регенерации провод т в кип щем слое перегретым вод ным паром, содержащим 1-5 об.%, предпочтительно 2-.-3 об.% аммиака.The essence of the invention is that the regeneration process is carried out in the fluidized bed with superheated water vapor containing 1-5% by volume, preferably 2-.- 3% by volume of ammonia.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772556917A SU709161A1 (en) | 1977-12-20 | 1977-12-20 | Method of regenerating catalyst for vinyl-acetate synthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772556917A SU709161A1 (en) | 1977-12-20 | 1977-12-20 | Method of regenerating catalyst for vinyl-acetate synthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU709161A1 true SU709161A1 (en) | 1980-01-15 |
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ID=20738823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772556917A SU709161A1 (en) | 1977-12-20 | 1977-12-20 | Method of regenerating catalyst for vinyl-acetate synthesis |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU709161A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111068793A (en) * | 2018-10-18 | 2020-04-28 | 中国石油化工股份有限公司 | Method for regenerating waste catalyst for preparing vinyl acetate from acetylene method |
| CN111068777A (en) * | 2018-10-18 | 2020-04-28 | 中国石油化工股份有限公司 | Regeneration method of waste catalyst for acetylene method vinyl acetate |
| CN111068792A (en) * | 2018-10-18 | 2020-04-28 | 中国石油化工股份有限公司 | Regeneration method of waste catalyst for synthesizing vinyl acetate by acetylene method |
| CN112439463A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Regeneration method of waste catalyst for acetylene method vinyl acetate |
-
1977
- 1977-12-20 SU SU772556917A patent/SU709161A1/en active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111068793A (en) * | 2018-10-18 | 2020-04-28 | 中国石油化工股份有限公司 | Method for regenerating waste catalyst for preparing vinyl acetate from acetylene method |
| CN111068777A (en) * | 2018-10-18 | 2020-04-28 | 中国石油化工股份有限公司 | Regeneration method of waste catalyst for acetylene method vinyl acetate |
| CN111068792A (en) * | 2018-10-18 | 2020-04-28 | 中国石油化工股份有限公司 | Regeneration method of waste catalyst for synthesizing vinyl acetate by acetylene method |
| CN111068793B (en) * | 2018-10-18 | 2023-01-31 | 中国石油化工股份有限公司 | Method for regenerating waste catalyst for preparing vinyl acetate from acetylene method |
| CN112439463A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Regeneration method of waste catalyst for acetylene method vinyl acetate |
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