CN1295971A - Novel process for producing sodium hydrosulfide by utilizing by-products in production of barium salt - Google Patents
Novel process for producing sodium hydrosulfide by utilizing by-products in production of barium salt Download PDFInfo
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- CN1295971A CN1295971A CN 00128500 CN00128500A CN1295971A CN 1295971 A CN1295971 A CN 1295971A CN 00128500 CN00128500 CN 00128500 CN 00128500 A CN00128500 A CN 00128500A CN 1295971 A CN1295971 A CN 1295971A
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- sodium
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- novel process
- barium
- hydrogen sulfide
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Abstract
The present invention is characterized by feeding sodium sulfide solution and hydrogen sulfide gas produced in the production of barium sulfate and barium chloride into a closed container under a certain pressure to make them produce reaction so as to obtain sodium bisulfide. Said invention fully utilizes the by-product obtained by production of barium salt, can eliminate pollution to environment, its technological process is rational, equipment is simple, operation is simple and convenient, and its investment is small.
Description
The present invention relates to a kind of co-production Sodium sulfhydrate novel process with the production barium salt, specifically, is with the novel process of producing the co-production Sodium sulfhydrate that barium sulfate and bariumchloride produced.
With barium sulphide and sodium sulfate is raw material, adopts metathesis process to produce process white, and its byproduct is a sodium sulfide solution, and its concentration is 2～6%.Because sodium sulfide solution concentration is low, the requirement that does not reach commercial grade has influence on its use.The employing method of evaporation concentrates, though can improve concentration, energy consumption height, cost height, and contaminate environment.Manufacturing enterprise is also arranged with it directly neutralization back discharging, so both wasted resource, again contaminate environment.With barium sulphide and hydrochloric acid is the raw material production bariumchloride, produces deleterious hydrogen sulfide.Because hydrogen sulfide purity is low, directly utilize, need processing to purify its cost height, and complex process.With its emptying or burning back emptying, then contaminate environment.
Task of the present invention is: a kind of novel process is provided, and is raw material with metathesis process production byproduct that barium sulfate and bariumchloride were produced, and produce Sodium sulfhydrate, thereby the resource of making full use of is increased economic efficiency decontamination.
The present invention finishes the foregoing invention task with following technical proposals.
With barium sulphide and sodium sulfate is the raw material production process white, produces byproduct sodium sulphite simultaneously.Sodium sulphite exists with the aqueous solution.With barium sulphide and hydrochloric acid is raw material, produces bariumchloride, produces the hydrogen sulfide toxic gas simultaneously.The sodium sulfide solution encloses container of packing into.Again hydrogen sulfide is sent into sodium sulfide solution in the above-mentioned encloses container under certain pressure.Sodium sulphite and hydrogen sulfide react, and make Sodium sulfhydrate, and Sodium sulfhydrate exists with the aqueous solution.
The optimum pressure of above-mentioned input hydrogen sulfide is 0.02～0.80MPa.For abundant absorbing hydrogen sulphide, utilize resource, whole technology is that the encloses container by the above-mentioned reaction of multistage generation combines.
When sodium sulphite liquid was sent into encloses container, its concentration the best was 16～23%.
The present invention has following advantage and effect.
1, technology provided by the present invention makes that the generation Sodium sulfhydrate reacts with double decomposition production byproduct sodium sulphite and hydrogen sulfide that barium sulfate and bariumchloride produced.Whole technology is combined by multistage, thereby makes the production byproduct resource that barium sulfate and bariumchloride produced be able to utilization cmpletely.The Sodium sulfhydrate of being produced through processing industrial goods, turn waste into wealth, remarkable in economical benefits improves.
2, the present invention is to produce barium sulfate and bariumchloride with double decomposition, with their co-production Sodium sulfhydrate, thereby having formed new is raw material with barium sulphide, sodium sulfate and hydrochloric acid, produces barium sulfate, bariumchloride and the compound production technology of Sodium sulfhydrate.Its equipment is simple, and feasible process is reasonable, easy and simple to handle, less investment, easy to implement and popularization, economic benefit and obvious social benefit.
3, owing to utilized sodium sulphite and hydrogen sulfide cmpletely, produce the pollution of barium salt to environment so eliminated.
4, because novel process is the production byproduct that barium salt produced to be added in finish in the encloses container, therefore, good work environment, labor strength is low.
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail.
Fig. 1 most preferred embodiment processing set-up of the present invention synoptic diagram
Most preferred embodiment
Produce barium sulfate with barium sulphide and sodium sulfate.Sodium sulfide solution this technology is produced is concentrated into 16～23%.Use pipeline (2) and pipe valve (4) to input to respectively in 6 encloses containers (5) then respectively.After finishing, input closes pipe valve (4).6 encloses containers (5) are connected step by step by pipe valve (7), form six grades of absorption reaction sections.The last level is provided with air pump.Open air pump, control pressure is 0.02～0.80MPa.Being the waste gas hydrogen sulfide that the raw material production bariumchloride is produced, be delivered to the sodium sulfide solution of the 1st grade of container (5) with pipeline (1) with barium sulphide and hydrochloric acid.Hydrogen sulfide is introduced into the first step.Fully react with the sodium sulphite of the first step of packing into.After reaction was finished, unnecessary hydrogen sulfide entered the second stage again.After partial reaction was finished, unnecessary hydrogen sulfide entered the third stage again.The rest may be inferred, all finishes until six encloses containers (5) reaction, and hydrogen sulfide and sodium sulphite also all absorb.
The Sodium sulfhydrate liquid that is generated is discharged by the outlet (6) that is located at container (5) bottom.
Claims (3)
1, a kind of novel process with the co-production Sodium sulfhydrate of producing barium sulfate and bariumchloride, use the replacement(metathesis)reaction method, with barium sulphide and sodium sulfate is raw material production barium sulfate, produce bariumchloride with barium sulphide and hydrochloric acid, it is characterized in that, the byproduct sodium sulfide solution of producing barium sulfate as stated above and being produced is packed in the airtight container (5), again produce the byproduct hydrogen sulfide that bariumchloride produced with aforesaid method, input in the sodium sulfide solution in the encloses container (5), sodium sulphite and hydrogen sulfide react, and make Sodium sulfhydrate.
2, production Sodium sulfhydrate novel process according to claim 1 is characterized in that, the optimum pressure of input hydrogen sulfide is 0.02～0.80MPa, and whole technology is to be combined by the encloses container of the above-mentioned reaction of multistage generation (5).
3, production Sodium sulfhydrate novel process according to claim 1 and 2 is characterized in that inputing to the sodium sulfide solution in the encloses container (5) that reacts, and its concentration the best is 16～23%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00128500 CN1295971A (en) | 2000-11-21 | 2000-11-21 | Novel process for producing sodium hydrosulfide by utilizing by-products in production of barium salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00128500 CN1295971A (en) | 2000-11-21 | 2000-11-21 | Novel process for producing sodium hydrosulfide by utilizing by-products in production of barium salt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1295971A true CN1295971A (en) | 2001-05-23 |
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ID=4593143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00128500 Pending CN1295971A (en) | 2000-11-21 | 2000-11-21 | Novel process for producing sodium hydrosulfide by utilizing by-products in production of barium salt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1295971A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337661B (en) * | 2007-07-04 | 2010-11-03 | 褚亚华 | Method for preparing sodium hydrosulfide |
| CN1944241B (en) * | 2006-10-27 | 2010-12-29 | 自贡鸿鹤化工股份有限公司 | Process for producing high purity crystalline sodium sulfide |
| CN109052448A (en) * | 2018-07-23 | 2018-12-21 | 东莞理工学院 | A kind of method and production line producing barium sulfate and vulcanized sodium |
-
2000
- 2000-11-21 CN CN 00128500 patent/CN1295971A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944241B (en) * | 2006-10-27 | 2010-12-29 | 自贡鸿鹤化工股份有限公司 | Process for producing high purity crystalline sodium sulfide |
| CN101337661B (en) * | 2007-07-04 | 2010-11-03 | 褚亚华 | Method for preparing sodium hydrosulfide |
| CN109052448A (en) * | 2018-07-23 | 2018-12-21 | 东莞理工学院 | A kind of method and production line producing barium sulfate and vulcanized sodium |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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