CN1063827A - The preparation method of catalyst for vinyl chloride synthesis - Google Patents
The preparation method of catalyst for vinyl chloride synthesis Download PDFInfo
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- CN1063827A CN1063827A CN 91100653 CN91100653A CN1063827A CN 1063827 A CN1063827 A CN 1063827A CN 91100653 CN91100653 CN 91100653 CN 91100653 A CN91100653 A CN 91100653A CN 1063827 A CN1063827 A CN 1063827A
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- vinyl chloride
- catalyzer
- urea
- catalyst
- activated carbon
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Abstract
The present invention is that to adopt the urea that comparatively cheaply is easy to get be treatment agent, and the good acetylene gas phase hydrogenchloride of preparation higher stability is combined to catalyst for vinyl chloride under lower temperature.Main preparation methods be gac with 15-40% preferably 25-35% aqueous solution of urea handle, being preferably in 300-400 ℃ at 200-600 ℃ again handles, and then with the mercuric chloride solution of well-established law or 15-30 ℃ of lower concentrations of low temperature (≤1%), mercury chloride is loaded in makes catalyzer on the gac, the catalyzer of this method preparation, its work-ing life, the comparable at present domestic catalyzer that makes it prolonged 0.5-1.0 times, and space time yield improves 20-50%.
Description
The invention relates to the preparation method that acetylene gas phase hydrogenchloride is combined to chloroethylene catalyst.
As everyone knows, in the industry of China by acetylene and hydrogenchloride synthesizing chloroethylene, prolong the technology of preparing that directly is loaded in activated carbon with comparatively outmoded special mercury chloride in decades always, the catalyzer of making in this way, though activity is satisfactory, but the deadly defect of this catalyzer is easily distillation thereby the low and poor stability of its space time yield of mercury chloride.
Abroad since the seventies, delivered some once and improved the patent of catalyst stability aspect; As the publication 50-80988 of Japan, russian patent 270703,641984 etc.The characteristics of these patented technologies all are activated carbon to be given elder generation carry mercury chloride afterwards again with the solution-treated of the hydrochloric acid salt of inorganic ammonium salt, urea and high boiling aliphatic amide, aromatic amine.So just can strengthen the bonding strength between mercury chloride and activated carbon surface, delay the rate of sublimation of mercury chloride, thereby make the throughput of catalyzer and obtained comparatively significantly raising work-ing life.
Yet in these technology, the needs that have use the treatment temp more than 800 ℃, and the organic ammonium that the use that has is comparatively expensive or the amplitude of raising are limited.
The objective of the invention is to adopt the urea that comparatively cheaply is easy to get is treatment agent, the acetylene gas phase chlorination catalyst for vinyl chloride synthesis of preparation higher stability under lower temperature.
In order to achieve the above object, the preparation method of this patent employing is; Activated carbon with 15～40% preferably 25～35% aqueous solution of urea handle, preferably heat-treat at 200～600 ℃ again, and then with the mercuric chloride solution of well-established law or low temperature (15～30 ℃) lower concentrations (≤1%) mercury chloride is loaded in and makes catalyzer on the activated carbon at 300～400 ℃.
With the catalyzer that this patent method is made, the catalyzer of comparable present domestic use in its work-ing life prolongs 0.5～1.0 times, and space time yield improves 20～50%.
Example: 2.0 kilograms of the good activated carbon of 120 ℃ of dryings, be immersed in the aqueous solution of urea of 2.4 liters 30%, mix and evaporate to dryness after, again in 300 ℃ of thermal treatments 4～6 hours, the above-mentioned again activated carbon of handling well joins in the mercuric chloride solution of 22 liters 1%, normal temperature down stirred dipping 6 hours, removed by filter raffinate and in 105 ℃ of oven dry 8～12 hours.
1. get the good catalyzer of above-mentioned drying 2.00 gram pack in through being 0.018 meter, when there is the Glass tubing of sieve plate 0.8 meter of length and centre, put into electric tube furnace, keep 180 ℃ ± 1 ℃, with 2 liters/minute speed fed nitrogen 3 hours, take out measure after cooling mercury chloride content and with the distillation procatalyst in mercury chloride content relatively.Be calculated as follows the mercury chloride hold facility.
Mercury chloride hold facility=(the distillation rear catalyst contains mercury chloride amount-distillation rear catalyst and contains the mercury chloride amount)/(the distillation procatalyst contains the mercury chloride amount) * 100%
2. get the good catalyzer of above-mentioned drying 1.5 liters, through 0.051 meter, in long 1.5 meters the reaction tubes, examine or check the vinylchlorid effect of catalyzer by listed reaction conditions in the table in packing into.The result is that the mercury chloride hold facility is 89.01%, and conversion of alkyne is 98.8%, 0.171 kilogram/upright liters per hour of space time yield, and be 1022 hours duration of service.
Comparing rate: being immersed in the mercuric chloride solution of 22 liters 1% 2.0 kilograms of the good activated carbon of 120 ℃ of dryings, normal temperature stirred dipping 6 hours down, removed by filter raffinate and in 105 ℃ of oven dry 8～12 hours.The catalyzer that makes is identified by the method for stipulating in the above-mentioned example.The result is that the mercury chloride hold facility is 55.09%, and conversion of alkyne is 99.2%, and space time yield is 0.113 a kilogram/upright liters per hour, and be 643 hours duration of service.
Claims (5)
1, prepare catalyst for vinyl chloride synthesis with novel method, it is characterized in that adopting urea is treatment agent, and prepares the catalyzer than good stability under lower temperature.
2,, it is characterized in that activated carbon handles its urea with aqueous solution of urea concentration is preferably in 25～35% the aqueous solution 15～40% to handle by the described preparation catalyst for vinyl chloride synthesis of claim 1.
3,, it is characterized in that handling carrying out evaporate to dryness again after mixing in the activated carbon immersion aqueous solution of urea by right 2 described preparation catalyst for vinyl chloride synthesis.
4, by right 3 described preparation catalyst for vinyl chloride synthesis, it is characterized in that it is 300-400 ℃ that the activated carbon behind the evaporate to dryness is heat-treated optimum temps at 200-600 ℃ again.
5, by right 1 described preparation catalyst for vinyl chloride synthesis, the mercuric chloride solution that it is characterized in that low concentration≤1% is loaded in mercury chloride makes catalyzer on the activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91100653 CN1063827A (en) | 1991-01-30 | 1991-01-30 | The preparation method of catalyst for vinyl chloride synthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91100653 CN1063827A (en) | 1991-01-30 | 1991-01-30 | The preparation method of catalyst for vinyl chloride synthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1063827A true CN1063827A (en) | 1992-08-26 |
Family
ID=4904755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91100653 Pending CN1063827A (en) | 1991-01-30 | 1991-01-30 | The preparation method of catalyst for vinyl chloride synthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063827A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363101C (en) * | 2006-03-01 | 2008-01-23 | 那风换 | Composite metal chloride catalyst and its production process |
| CN102085484A (en) * | 2010-06-11 | 2011-06-08 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | High-stability composite mercury catalyst for hydrochlorination of acetylene |
| CN102380407A (en) * | 2011-08-25 | 2012-03-21 | 成都惠恩精细化工有限责任公司 | Low-mercury catalyst for acetylene hydrochlorination |
| WO2013059998A1 (en) * | 2011-10-26 | 2013-05-02 | 上海中科高等研究院 | Catalyst for preparing vinyl chloride, preparation method therefor and use thereof |
| RU2588120C2 (en) * | 2011-10-26 | 2016-06-27 | Шанхай Эванст Рисерч Инститьют, Чайниз Экэдеми Оф Сайенсиз | Catalyst for producing vinyl chloride and method of preparing said catalyst |
-
1991
- 1991-01-30 CN CN 91100653 patent/CN1063827A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363101C (en) * | 2006-03-01 | 2008-01-23 | 那风换 | Composite metal chloride catalyst and its production process |
| CN102085484A (en) * | 2010-06-11 | 2011-06-08 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | High-stability composite mercury catalyst for hydrochlorination of acetylene |
| CN102380407A (en) * | 2011-08-25 | 2012-03-21 | 成都惠恩精细化工有限责任公司 | Low-mercury catalyst for acetylene hydrochlorination |
| CN102380407B (en) * | 2011-08-25 | 2013-11-20 | 成都惠恩精细化工有限责任公司 | Low-mercury catalyst for acetylene hydrochlorination |
| WO2013059998A1 (en) * | 2011-10-26 | 2013-05-02 | 上海中科高等研究院 | Catalyst for preparing vinyl chloride, preparation method therefor and use thereof |
| RU2588120C2 (en) * | 2011-10-26 | 2016-06-27 | Шанхай Эванст Рисерч Инститьют, Чайниз Экэдеми Оф Сайенсиз | Catalyst for producing vinyl chloride and method of preparing said catalyst |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C03 | Withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |