CN102115150A - Method for preparing zinc chloride and elementary mercury by using mercury-containing waste catalyst - Google Patents
Method for preparing zinc chloride and elementary mercury by using mercury-containing waste catalyst Download PDFInfo
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- CN102115150A CN102115150A CN2010106081254A CN201010608125A CN102115150A CN 102115150 A CN102115150 A CN 102115150A CN 2010106081254 A CN2010106081254 A CN 2010106081254A CN 201010608125 A CN201010608125 A CN 201010608125A CN 102115150 A CN102115150 A CN 102115150A
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a method for preparing zinc chloride and elementary mercury by using a mercury-containing waste catalyst and relates to the technical field of waste gas, waste water and industrial residue treatment and utilization of an organic industrial waste mercury catalyst. The zinc chloride and elementary mercury are prepared from waste mercury catalyst by the following three steps: firstly, filling the waste mercury catalyst into a sealed distiller for distillation to allow mercury to sublime into gas directly, and cooling to obtain liquid mercury chloride; reacting the obtained solution of mercury chloride with zinc particles to obtain mixed solution of zinc chloride and elementary mercury; secondly, performing suction-filtration on the mixed solution in a sealed manner to obtain an elementary mercury filter cake, and washing, dewatering and packaging to obtain an elementary mercury product; and finally, filling the obtained solution of zinc chloride into a normal pressure distiller for distillation, discharging saturated solution of zinc chloride, cooling, crystallizing, crushing and packing to obtain a zinc chloride crystal product. When the method is used, the pollution of waste mercury catalyst to the environment is prevented effectively, and high economic benefit is created at the same time.
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 zinc 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, and its using value height is extremely wide such as the range of application of zinc chloride, as metal solder flux, oil scavenging agent and activated carbon activator etc.
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 zinc chloride and simple substance mercury.
For achieving the above object, to prepare the technical scheme of method of zinc 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 zinc 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 zinc granule are reacted with pure mass ratio 1:0.04-0.44, generate zinc 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 liquor zinci chloridi that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when zinc chloride reaches capacity solution, obtains zinc chloride crystal finished product through crushing packing.
Main chemical reactions formula of the present invention is:
HgCl
2?+?Zn====?ZnCl
2?+?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 environment; 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 zinc 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 zinc granule are reacted with pure mass ratio 1:0.04, generate zinc 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 4.3Kg; Clarifying liquor zinci chloridi carries out next step processing;
The 3rd goes on foot, and the above-mentioned liquor zinci chloridi that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when zinc chloride reaches capacity solution, obtains zinc chloride crystal finished product 2.9Kg through crushing packing.
Embodiment two
The mercury catalyst that will give up makes zinc 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 zinc granule are reacted with pure mass ratio 1:0.24, generate zinc 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 25.8Kg; Clarifying liquor zinci chloridi carries out next step processing;
The 3rd goes on foot, and the above-mentioned liquor zinci chloridi that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when zinc chloride reaches capacity solution, obtains zinc chloride crystal finished product 17.6Kg through crushing packing.
Embodiment three
The mercury catalyst that will give up makes zinc 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 zinc granule are reacted with pure mass ratio 1:0.44, generate zinc 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 47.4Kg; Clarifying liquor zinci chloridi carries out next step processing;
The 3rd goes on foot, and the above-mentioned liquor zinci chloridi that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when zinc chloride reaches capacity solution, obtains zinc chloride crystal finished product 32.2Kg through crushing packing.
Claims (1)
1. mercurous spent catalyst prepares the method for zinc chloride and simple substance mercury, it is characterized in that: the mercury catalyst that will give up makes zinc 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 zinc granule are reacted with pure mass ratio 1:0.04-0.44, generate zinc 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 liquor zinci chloridi that obtains is sent in the air distillation device distilled, and ejects crystallisation by cooling when zinc chloride reaches capacity solution, obtains zinc chloride crystal finished product through crushing packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106081254A CN102115150A (en) | 2010-12-28 | 2010-12-28 | Method for preparing zinc chloride and elementary mercury by using mercury-containing waste catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106081254A CN102115150A (en) | 2010-12-28 | 2010-12-28 | Method for preparing zinc chloride and elementary mercury by using mercury-containing waste catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102115150A true CN102115150A (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106081254A Pending CN102115150A (en) | 2010-12-28 | 2010-12-28 | Method for preparing zinc chloride and elementary mercury by using mercury-containing waste catalyst |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104263942A (en) * | 2014-09-23 | 2015-01-07 | 铜仁市万山区盛和矿业有限责任公司 | Comprehensive utilization method of waste mercury accelerant |
| CN104789802A (en) * | 2015-03-31 | 2015-07-22 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | Electric furnace for waste mercury and catalyst mercury recovery |
| CN108328645A (en) * | 2018-04-13 | 2018-07-27 | 六盘水师范学院 | A kind of ultrasonic atomizatio United microwave chloridising roasting regeneration of spent catalyst prepares the device and methods for using them of zinc chloride |
-
2010
- 2010-12-28 CN CN2010106081254A patent/CN102115150A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104263942A (en) * | 2014-09-23 | 2015-01-07 | 铜仁市万山区盛和矿业有限责任公司 | Comprehensive utilization method of waste mercury accelerant |
| CN104789802A (en) * | 2015-03-31 | 2015-07-22 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | Electric furnace for waste mercury and catalyst mercury recovery |
| CN104789802B (en) * | 2015-03-31 | 2017-07-14 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | A kind of electric furnace for mercury catalyst mercury recovery of giving up |
| CN108328645A (en) * | 2018-04-13 | 2018-07-27 | 六盘水师范学院 | A kind of ultrasonic atomizatio United microwave chloridising roasting regeneration of spent catalyst prepares the device and methods for using them of zinc chloride |
| CN108328645B (en) * | 2018-04-13 | 2023-07-25 | 六盘水师范学院 | Device for preparing zinc chloride by regenerating spent catalyst through ultrasonic atomization and microwave chlorination roasting and application method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20110706 |