CN102115154A - Method for preparing mercuric sulfide and sodium chloride by using mercury-containing dead catalyst - Google Patents
Method for preparing mercuric sulfide and sodium chloride by using mercury-containing dead catalyst Download PDFInfo
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- CN102115154A CN102115154A CN 201010608147 CN201010608147A CN102115154A CN 102115154 A CN102115154 A CN 102115154A CN 201010608147 CN201010608147 CN 201010608147 CN 201010608147 A CN201010608147 A CN 201010608147A CN 102115154 A CN102115154 A CN 102115154A
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- sodium chloride
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- zunsober
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Abstract
The invention discloses a method for preparing mercuric sulfide and sodium chloride by using a mercury-containing dead catalyst, relating to the technical field of treatment and utilization of three wastes of the dead mercury catalyst in the organic industry. The method comprises the following steps of: firstly, conveying the dead mercury catalyst into a sealed distiller for distilling to ensure that mercuric chloride directly sublimates into gas and is cooled into liquid mercuric chloride; secondly, reacting the obtained mercuric chloride solution with a sodium sulfate solution to generate a mixed solution of sodium sulfide and the sodium chloride; thirdly, performing suction filtration on the mixed solution in an enclosed state to obtain a mercuric sulfide filter cake, washing, dehydrating, smashing and packing to obtain a mercuric sulfide product; fourthly, conveying the obtained sodium chloride solution into an enclosed normal-pressure distiller for distilling, and discharging a saturated sodium chloride solution into a cooler when the distillation temperature reaches a degree that the sodium chloride solution is saturated; and cooling and crystallizing to obtain a sodium chloride crystal product. By adopting the method, environmental pollution caused by the dead mercury catalyst can be effectively prevented, and higher economic benefit is achieved.
Description
Technical field
The present invention relates to the disposal of three wastes of the useless mercury catalyst of organic industry and the technical field of utilization, especially a kind of mercurous spent catalyst prepares the method for zunsober and sodium-chlor.
Background technology
In the reaction with the acetylene method synthesizing chloroethylene, industrial what use is the high mercury catalyst of mercury chloride content as 10wt% and since mercury chloride in reaction is carried out easily distillation run off, can work the mischief to environment.People improve at the mercury catalyst that the method for seeking is used the acetylene method synthesizing chloroethylene, attempt to develop a kind of low mercury or non-mercury catalyst, make it under higher transformation efficiency and selectivity, the long life-span is arranged, and the harm to environment reaches minimum, for the industrial applications of later on low mercury or non-mercury catalyst is laid a good foundation.By practice prepared a kind of on transformation efficiency, selectivity still are work-ing life all reasonable catalyzer mercury chloride, its transformation efficiency has reached 97%, selectivity has reached 98%, and mercury content is lower, belongs to a kind of more promising catalyzer.But adopt this mercuric chleride catalyst, in the reaction with the acetylene method synthesizing chloroethylene, the quantity discharged of mercurous spent catalyst is 0.002 ton of product discharging per ton, and useless mercury (mercury chloride) content of discharge is 2-7%;
One, reacted useless mercury not only effectively do not utilize, and can cause secondary pollution;
Two, mercury chloride can be used to produce products such as chlorate and mercury salt, and its using value height can be used for oil colour, ink paste and bright red engraving lacquerware etc. such as zunsober.
Summary of the invention
The mercurous spent catalyst that the present invention is intended to produce in the reaction to the acetylene method synthesizing chloroethylene carries out the comprehensive regulation, provides a kind of mercurous spent catalyst to prepare the method for zunsober and sodium-chlor.
For achieving the above object, the technical solution used in the present invention is as follows:
The mercury catalyst that will give up makes zunsober and sodium-chlor through following three steps:
The first step, the mercury catalyst that will give up is sent in the sealed distiller and is distilled, and starts power supply and heats to 300-304 degree centigrade and make mercury chloride be directly sublimed into gas, is cooled to the mercury chloride of liquid again;
Second step, above-mentioned mercuric chloride solution that obtains and sodium sulfide solution are reacted with pure mass ratio 1:0.08-0.48, generate zunsober and sodium-chlor mixing solutions; Obtain the filter cake zunsober through closed suction filtration then, through washing, dewater, be packaged to be the zunsober product; Clarifying sodium chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned sodium chloride solution that obtains is sent in the sealed air distillation device distilled, and enters water cooler when distillation temperature reaches sodium chloride saturated solution; Obtain the sodium chloride crystal product through cooling, crystallization.
Main chemical reactions formula of the present invention is:
HgCl
2?+Na
2S====?HgS+?2NaCl
Beneficial effect of the present invention is: one, and the mercury catalyst that will give up fully utilizes, and has effectively prevented the pollution of useless mercury catalyst to sublimity; Its two, simple substance mercury and the zinc chloride product produced serve many purposes, economic benefit is considerable.
Embodiment
Embodiment one
The mercury catalyst that will give up makes zunsober and sodium-chlor through following three steps:
The first step is sent into the useless mercury catalyst of 500Kg in the sealed distiller and to be distilled, and starts power supply and heats to 300-304 degree centigrade and make mercury chloride be directly sublimed into gas, is cooled to the mercury chloride of liquid again;
Second step, above-mentioned mercuric chloride solution that obtains and sodium sulfide solution are reacted with pure mass ratio 1:0.08, generate zunsober and sodium-chlor mixing solutions; Obtain the filter cake zunsober through closed suction filtration then, through washing, dewater, be packaged to be zunsober product 8.3Kg; Clarifying sodium chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned sodium chloride solution that obtains is sent in the sealed air distillation device distilled, and enters water cooler when distillation temperature reaches sodium chloride saturated solution; Obtain sodium chloride crystal product 6.7Kg through cooling, crystallization.
Embodiment two
The mercury catalyst that will give up makes zunsober and sodium-chlor through following three steps:
The first step is sent into the useless mercury catalyst of 500Kg in the sealed distiller and to be distilled, and starts power supply and heats to 300-304 degree centigrade and make mercury chloride be directly sublimed into gas, is cooled to the mercury chloride of liquid again;
Second step, above-mentioned mercuric chloride solution that obtains and sodium sulfide solution are reacted with pure mass ratio 1:0.28, generate zunsober and sodium-chlor mixing solutions; Obtain the filter cake zunsober through closed suction filtration then, through washing, dewater, be packaged to be zunsober product 29.2Kg; Clarifying sodium chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned sodium chloride solution that obtains is sent in the sealed air distillation device distilled, and enters water cooler when distillation temperature reaches sodium chloride saturated solution; Obtain sodium chloride crystal product 23.6Kg through cooling, crystallization.
Embodiment three
The mercury catalyst that will give up makes zunsober and sodium-chlor through following three steps:
The first step is sent into the useless mercury catalyst of 500Kg in the sealed distiller and to be distilled, and starts power supply and heats to 300-304 degree centigrade and make mercury chloride be directly sublimed into gas, is cooled to the mercury chloride of liquid again;
Second step, above-mentioned mercuric chloride solution that obtains and sodium sulfide solution are reacted with pure mass ratio 1:0.48, generate zunsober and sodium-chlor mixing solutions; Obtain the filter cake zunsober through closed suction filtration then, through washing, dewater, be packaged to be zunsober product 50.1Kg; Clarifying sodium chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned sodium chloride solution that obtains is sent in the sealed air distillation device distilled, and enters water cooler when distillation temperature reaches sodium chloride saturated solution; Obtain sodium chloride crystal product 40.5Kg through cooling, crystallization.
Claims (1)
1. mercurous spent catalyst prepares the method for zunsober and sodium-chlor, it is characterized in that: the mercury catalyst that will give up makes zunsober and sodium-chlor through following three steps:
The first step, the mercury catalyst that will give up is sent in the sealed distiller and is distilled, and starts power supply and heats to 300-304 degree centigrade and make mercury chloride be directly sublimed into gas, is cooled to the mercury chloride of liquid again;
Second step, above-mentioned mercuric chloride solution that obtains and sodium sulfide solution are reacted with pure mass ratio 1:0.08-0.48, generate zunsober and sodium-chlor mixing solutions; Obtain the filter cake zunsober through closed suction filtration then, through washing, dewater, be packaged to be the zunsober product; Clarifying sodium chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned sodium chloride solution that obtains is sent in the sealed air distillation device distilled, and enters water cooler when distillation temperature reaches sodium chloride saturated solution; Obtain the sodium chloride crystal product through cooling, crystallization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010608147 CN102115154A (en) | 2010-12-28 | 2010-12-28 | Method for preparing mercuric sulfide and sodium chloride by using mercury-containing dead catalyst |
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| CN 201010608147 CN102115154A (en) | 2010-12-28 | 2010-12-28 | Method for preparing mercuric sulfide and sodium chloride by using mercury-containing dead catalyst |
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| CN102115154A true CN102115154A (en) | 2011-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492466A (en) * | 2014-12-05 | 2015-04-08 | 贵州省铜仁市万山区金鑫汞业有限公司 | Production process of mercury tetrachloride complex-ion low-mercury catalyst |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777466A (en) * | 2003-05-01 | 2006-05-24 | 加利福尼亚大学董事会 | Method and apparatus for mitigating mercury emissions in exhaust gases |
| CN101525149A (en) * | 2009-03-04 | 2009-09-09 | 中国科学院西北高原生物研究所 | Synthetic method of HgS capable of being used as medicine |
| JP2009213999A (en) * | 2008-03-10 | 2009-09-24 | Taiheiyo Cement Corp | Apparatus and method of treating mercury-containing waste |
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2010
- 2010-12-28 CN CN 201010608147 patent/CN102115154A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777466A (en) * | 2003-05-01 | 2006-05-24 | 加利福尼亚大学董事会 | Method and apparatus for mitigating mercury emissions in exhaust gases |
| JP2009213999A (en) * | 2008-03-10 | 2009-09-24 | Taiheiyo Cement Corp | Apparatus and method of treating mercury-containing waste |
| CN101525149A (en) * | 2009-03-04 | 2009-09-09 | 中国科学院西北高原生物研究所 | Synthetic method of HgS capable of being used as medicine |
Non-Patent Citations (4)
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| 《中国产业》 20100930 丁顶 电石法聚氯乙烯生产工艺汞的零排放初步构想 72-73 1 , 第9期 * |
| 《化学元素周期系》 19991031 车云霞等 硫化汞；二氯化汞 天津：南开大学出版社 238-239 1 , 第1版 * |
| 《燃料科学与技术》 20030430 王泉海登 硫元素对烟气中汞的形态和分布的影响 135-138 1 第9卷, 第2期 * |
| 《皖西学院学报》 20051031 彭以水等 二氧化硫测定废液中氯化汞的回收 24-25 1 第21卷, 第5期 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492466A (en) * | 2014-12-05 | 2015-04-08 | 贵州省铜仁市万山区金鑫汞业有限公司 | Production process of mercury tetrachloride complex-ion low-mercury catalyst |
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Application publication date: 20110706 |