CN102181641A - Method for preparing tin chloride and elementary substance mercury from mercury-containing catalyst - Google Patents
Method for preparing tin chloride and elementary substance mercury from mercury-containing catalyst Download PDFInfo
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- CN102181641A CN102181641A CN2010106081451A CN201010608145A CN102181641A CN 102181641 A CN102181641 A CN 102181641A CN 2010106081451 A CN2010106081451 A CN 2010106081451A CN 201010608145 A CN201010608145 A CN 201010608145A CN 102181641 A CN102181641 A CN 102181641A
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- mercury
- tin chloride
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- tin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
A method for preparing tin chloride and elementary substance mercury from mercury waste-containing catalyst relates to the technical field of three-waste treatment and utilization of mercury waste catalyst in organic industry. The mercury waste catalyst is made into tin chloride and elementary substance mercury by the following three steps: first feeding the mercury waste catalyst to a sealing distiller to be distilled so that mercury chloride is directly sublimated to gas and then cooled into liquid mercury chloride; then, enabling the obtained mercury chloride solution to react with stannous chloride to generate the mixed solution of tin chloride and elementary substance mercury; doing the mixed solution with sealed filtration to obtain filter cake elementary substance mercury that is washed, dehydrated and packaged to obtain the elementary substance mercury product; and finally feeding the obtained tin chloride solution to a constant-pressure distiller to be distilled, when the tin chloride becomes saturated solution, discharging the tin chloride, cooled and crystallized, and crushing and packaging the tin chloride to obtain the finished product of tin chloride crystal. The method effectively prevents mercury waste catalyst from polluting the environment and meanwhile, yields high economic benefit.
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 tin chloride and simple substance mercury.
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 simple substance mercury, its using value height, can be used for making the FTO conductive glass such as tin chloride, FTO glass can be as the replacement articles for use of ITO conductive glass, be widely used in liquid crystal display, photochemical catalysis, aspects such as thin-film solar cells substrate, the market requirement is very big.
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 tin chloride and simple substance mercury.
For achieving the above object, to prepare the technical scheme of method of tin chloride and simple substance mercury as follows for a kind of mercurous spent catalyst of the present invention:
The mercury catalyst that will give up makes tin chloride and simple substance mercury 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 tin protochloride are reacted with pure mass ratio 1:0.5-0.9, generate tin chloride and simple substance mercury mixing solutions; This mixing solutions obtains filter cake simple substance mercury through closed suction filtration, through washing, dewater and being packaged to be simple substance mercury product; Clarifying tin chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned tin chloride solution that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when tin chloride reaches capacity solution, obtains tin chloride crystal finished product through crushing packing.
Main chemical reactions formula of the present invention is:
HgCl
2?+?SnCl
2====?SnCl
4+?Hg
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 tin chloride product produced have high economic benefit.
Embodiment
Embodiment one
The mercury catalyst that will give up makes tin chloride and simple substance mercury 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 tin protochloride are reacted with pure mass ratio 1:0.5, generate tin chloride and simple substance mercury mixing solutions; This mixing solutions obtains filter cake simple substance mercury through closed suction filtration, through washing, dewater and being packaged to be simple substance mercury product 18.5Kg; Clarifying tin chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned tin chloride solution that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when tin chloride reaches capacity solution, obtains tin chloride crystal finished product 24Kg through crushing packing.
Embodiment two
The mercury catalyst that will give up makes tin chloride and simple substance mercury 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 tin protochloride are reacted with pure mass ratio 1:0.7, generate tin chloride and simple substance mercury mixing solutions; This mixing solutions obtains filter cake simple substance mercury through closed suction filtration, through washing, dewater and being packaged to be simple substance mercury product 25.9Kg; Clarifying tin chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned tin chloride solution that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when tin chloride reaches capacity solution, obtains tin chloride crystal finished product 33.7Kg through crushing packing.
Embodiment three
The mercury catalyst that will give up makes tin chloride and simple substance mercury 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 tin protochloride are reacted with pure mass ratio 1:0.9, generate tin chloride and simple substance mercury mixing solutions; This mixing solutions obtains filter cake simple substance mercury through closed suction filtration, through washing, dewater and being packaged to be simple substance mercury product 33.2Kg; Clarifying tin chloride solution carries out next step processing;
The 3rd goes on foot, and the above-mentioned tin chloride solution that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when tin chloride reaches capacity solution, obtains tin chloride crystal finished product 43.3Kg through crushing packing.
Claims (1)
1. mercurous spent catalyst prepares the method for tin chloride and simple substance mercury, it is characterized in that: the mercury catalyst that will give up makes tin chloride and simple substance mercury 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 tin protochloride are reacted with pure mass ratio 1:0.5-0.9, generate tin chloride and simple substance mercury mixing solutions; This mixing solutions obtains filter cake simple substance mercury through closed suction filtration, through washing, dewater and being packaged to be simple substance mercury product; Clarifying liquor zinci chloridi carries out next step processing;
The 3rd goes on foot, and the above-mentioned tin chloride solution that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when tin chloride reaches capacity solution, obtains tin chloride crystal finished product through crushing packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106081451A CN102181641A (en) | 2010-12-28 | 2010-12-28 | Method for preparing tin chloride and elementary substance mercury from mercury-containing catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106081451A CN102181641A (en) | 2010-12-28 | 2010-12-28 | Method for preparing tin chloride and elementary substance mercury from mercury-containing catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102181641A true CN102181641A (en) | 2011-09-14 |
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ID=44567927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106081451A Pending CN102181641A (en) | 2010-12-28 | 2010-12-28 | Method for preparing tin chloride and elementary substance mercury from mercury-containing catalyst |
Country Status (1)
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| CN (1) | CN102181641A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721676A (en) * | 2012-06-18 | 2012-10-10 | 苏州国环环境检测有限公司 | Method for stably measuring arsenic and mercury in water by atomic fluorescence spectrometry |
-
2010
- 2010-12-28 CN CN2010106081451A patent/CN102181641A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 《哈尔滨建筑工程学院学报》 19851231 符九龙 含汞废渣电氧化法回收金属汞的试验研究 85-91 1 , 第2期 * |
| 《贵州环保科技》 19961231 徐永炽 用新技术回收废氯化汞触媒汞 30-33 1 , 第1期 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721676A (en) * | 2012-06-18 | 2012-10-10 | 苏州国环环境检测有限公司 | Method for stably measuring arsenic and mercury in water by atomic fluorescence spectrometry |
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Application publication date: 20110914 |