CN105565272A - Method for preparing high-purity hydrogen chloride gas - Google Patents
Method for preparing high-purity hydrogen chloride gas Download PDFInfo
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- CN105565272A CN105565272A CN201510845498.6A CN201510845498A CN105565272A CN 105565272 A CN105565272 A CN 105565272A CN 201510845498 A CN201510845498 A CN 201510845498A CN 105565272 A CN105565272 A CN 105565272A
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- hydrogen chloride
- purity hydrogen
- purity
- chloride gas
- hydrogenchloride
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Abstract
The invention relates to the field of technologies for preparing chemical materials, in particular to a method for preparing high-purity hydrogen chloride gas. The method for preparing the high-purity hydrogen chloride gas includes steps of (1), adding 98% concentrated sulfuric acid and potassium chloride into Mannheim furnaces, heating the Mannheim furnaces, continuously stirring the concentrated sulfuric acid and the potassium chloride to uniformly mix the concentrated sulfuric acid and the potassium chloride with each other and allowing the concentrated sulfuric acid and the potassium chloride to sufficiently react to each other so as to generate potassium sulfate; (2), arranging the potassium sulfate generated in the step (1) by means of reaction in closed coolers, neutralizing the potassium sulfate by the aid of lime, smashing the potassium sulfate and then packaging the potassium sulfate to obtain finished products; (3), leading hydrogen chloride generated in the step (1) by means of reaction into absorption working procedures. The method for preparing the high-purity hydrogen chloride gas has the advantages that the hydrogen chloride is high in purity and low in purity fluctuation, does not contain free chlorine and is prepared at high temperatures, and concentrated hydrochloric acid is high in corrosion under high-temperature conditions.
Description
Technical field
The present invention relates to technical field of chemical material preparation, be specifically related to a kind of preparation method of high-purity hydrogen chloride gas.
Background technology
Hydrogenchloride is the integral part in chlorine industry.The hydrogenchloride on the ground such as the U.S., Europe, Japan produces mainly with the form of by-product hydrogen chloride greatly, and most by-product hydrogen chloride loops back in process system, does not come into the market.According to statistics, nearly 40 multiple techniques produce by-product hydrogen chloride and have 110 techniques to take hydrogenchloride as raw material.But in China, along with developing rapidly of chlorine industry, the particularly rapid expansion of organic chlorides scale nearly ten years, by-product hydrogen chloride total amount cumulative year after year, when process system can not be recycled completely, by-product hydrogen chloride often to pass in water by-product hydrochloric acid or prepares high-purity hydrogen chloride further, current high-purity hydrogen chloride market is better, but supply exceed demand in hydrochloric acid market, and by-product hydrochloric acid is a kind of inexpensive way, so indivedual enterprise just can exchange company interest for by sacrificialing environment when selling by-product hydrogen chloride or hydrochloric acid becomes burden, obviously this mode is outdated, simultaneously, the acid cleaning process of iron and steel, plating and steel structural part, a large amount of lower concentration waste hydrochloric acids can be discharged in chemical pharmacy, Rare Earth Production process, waste liquid generally discharges after the mode process of neutralization, not only processing costs is high, also wastes resource, brings the dirty pears of secondary, being unfavorable for the protection of environment and the Sustainable development of energy resource, being therefore necessary that the waste hydrochloric acid to producing in production process is recycled.High-purity hydrogen chloride gas use is extensive, can be used for system dye, spices, medicine etc., is again the important materials of the techniques such as silicon chip etching in integrated circuit production process, passivation and extension, also can be used for the field such as synthetic catalyst, Metal smelting.Along with the development of every profession and trade, the demand of high-purity hydrogen chloride is increasing.
Summary of the invention
The present invention is intended to for the problems referred to above, proposes a kind of preparation method of high-purity hydrogen chloride gas.
Technical program of the present invention lies in:
The preparation method of high-purity hydrogen chloride gas, comprises the following steps:
(1) add in mannheim furnace with 98% vitriol oil and Repone K for raw material, to mannheim furnace heating, through continuously stirring, make it mix, fully react;
(2) potassium sulfate that reaction in above-mentioned steps (1) generates is inserted airtight water cooler, be packaged as finished product through limestone vegetation and after pulverizing;
(3) hydrogenchloride that reaction in above-mentioned steps (1) generates is introduced absorption operation.
Described absorption operation is to be contacted with the dilute hydrochloric acid from desorption step by hydrogenchloride to be absorbed as concentrated hydrochloric acid after cooling removal of impurities, and the hydrogenchloride steam of concentrated hydrochloric acid and 120 DEG C carries out heat and mass, is desorbed by the hydrogenchloride in concentrated hydrochloric acid, until reach azeotropic; The hydrogenchloride separating sucking-off again through dewatering, acid-mist-removing obtains high-purity hydrogen chloride, purity can reach 99%.
In described step (1), the add-on of the vitriol oil and Repone K is for react mol ratio 2:1.
The temperature heated mannheim furnace in described step (1) is 500-600 DEG C.
Technique effect of the present invention is:
By the method preparing high-purity hydrogen chloride gas provided by the invention, hydrogenchloride purity is high, and purity fluctuation is little, and not containing free chlorine, but it at high temperature carries out, and under hot conditions, concentrated hydrochloric acid corrodibility is stronger.
Embodiment
The preparation method of high-purity hydrogen chloride gas, comprises the following steps:
(1) add in mannheim furnace with 98% vitriol oil and Repone K for raw material, to mannheim furnace heating, through continuously stirring, make it mix, fully react;
(2) potassium sulfate that reaction in above-mentioned steps (1) generates is inserted airtight water cooler, be packaged as finished product through limestone vegetation and after pulverizing;
(3) hydrogenchloride that reaction in above-mentioned steps (1) generates is introduced absorption operation.
Wherein, absorbing operation is to be contacted with the dilute hydrochloric acid from desorption step by hydrogenchloride to be absorbed as concentrated hydrochloric acid after cooling removal of impurities, and the hydrogenchloride steam of concentrated hydrochloric acid and 120 DEG C carries out heat and mass, is desorbed by the hydrogenchloride in concentrated hydrochloric acid, until reach azeotropic; The hydrogenchloride separating sucking-off again through dewatering, acid-mist-removing obtains high-purity hydrogen chloride, purity can reach 99%.In step (1), the add-on of the vitriol oil and Repone K is for react mol ratio 2:1.The temperature heated mannheim furnace in step (1) is 500-600 DEG C.
Claims (4)
1. the preparation method of high-purity hydrogen chloride gas, is characterized in that: comprise the following steps:
(1) add in mannheim furnace with 98% vitriol oil and Repone K for raw material, to mannheim furnace heating, through continuously stirring, make it mix, fully react;
(2) potassium sulfate that reaction in above-mentioned steps (1) generates is inserted airtight water cooler, be packaged as finished product through limestone vegetation and after pulverizing;
(3) hydrogenchloride that reaction in above-mentioned steps (1) generates is introduced absorption operation.
2. the preparation method of high-purity hydrogen chloride gas according to claim 1, it is characterized in that: described absorption operation is contacted with the dilute hydrochloric acid from desorption step by hydrogenchloride to be absorbed as concentrated hydrochloric acid after cooling removal of impurities, the hydrogenchloride steam of concentrated hydrochloric acid and 120 DEG C carries out heat and mass, hydrogenchloride in concentrated hydrochloric acid is desorbed, until reach azeotropic; The hydrogenchloride separating sucking-off again through dewatering, acid-mist-removing obtains high-purity hydrogen chloride, purity can reach 99%.
3. the preparation method of high-purity hydrogen chloride gas according to claim 1, is characterized in that: in described step (1), the add-on of the vitriol oil and Repone K is for react mol ratio 2:1.
4. the preparation method of high-purity hydrogen chloride gas according to claim 1, is characterized in that: the temperature heated mannheim furnace in described step (1) is 500-600 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845498.6A CN105565272A (en) | 2015-11-30 | 2015-11-30 | Method for preparing high-purity hydrogen chloride gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510845498.6A CN105565272A (en) | 2015-11-30 | 2015-11-30 | Method for preparing high-purity hydrogen chloride gas |
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| CN105565272A true CN105565272A (en) | 2016-05-11 |
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| CN201510845498.6A Pending CN105565272A (en) | 2015-11-30 | 2015-11-30 | Method for preparing high-purity hydrogen chloride gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106882767A (en) * | 2017-01-16 | 2017-06-23 | 淮阴师范学院 | A kind of new chloride and strong sulfuric acid response prepared for hydrogen chloride from rate controlling with from stirred reactor and method |
| CN107986235A (en) * | 2017-11-30 | 2018-05-04 | 湖南中大技术创业孵化器有限公司 | A kind of method that sodium potassium mixing villaumite efficiently separates coproduction HCl |
| CN109399569A (en) * | 2018-12-28 | 2019-03-01 | 谢子豪 | A kind of method that sulfuric acid extraction prepares hydrogen chloride |
| CN109502548A (en) * | 2019-01-23 | 2019-03-22 | 杨宇 | A kind of preparation process of hydrogen chloride gas |
| CN114951236A (en) * | 2022-03-24 | 2022-08-30 | 江苏理工学院 | Resourceful treatment method for waste incineration fly ash |
-
2015
- 2015-11-30 CN CN201510845498.6A patent/CN105565272A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106882767A (en) * | 2017-01-16 | 2017-06-23 | 淮阴师范学院 | A kind of new chloride and strong sulfuric acid response prepared for hydrogen chloride from rate controlling with from stirred reactor and method |
| CN106882767B (en) * | 2017-01-16 | 2019-03-12 | 淮阴师范学院 | A kind of novel chloride and strong sulfuric acid response for hydrogen chloride preparation from rate controlling with from stirred reactor and method |
| CN107986235A (en) * | 2017-11-30 | 2018-05-04 | 湖南中大技术创业孵化器有限公司 | A kind of method that sodium potassium mixing villaumite efficiently separates coproduction HCl |
| CN107986235B (en) * | 2017-11-30 | 2020-11-27 | 湖南中大技术创业孵化器有限公司 | Method for efficiently separating sodium-potassium mixed chloride salt and co-producing HCl |
| CN109399569A (en) * | 2018-12-28 | 2019-03-01 | 谢子豪 | A kind of method that sulfuric acid extraction prepares hydrogen chloride |
| CN109399569B (en) * | 2018-12-28 | 2020-11-10 | 滁州市三和纤维制造有限公司 | Method for preparing hydrogen chloride by sulfuric acid extraction method |
| CN109502548A (en) * | 2019-01-23 | 2019-03-22 | 杨宇 | A kind of preparation process of hydrogen chloride gas |
| CN114951236A (en) * | 2022-03-24 | 2022-08-30 | 江苏理工学院 | Resourceful treatment method for waste incineration fly ash |
| CN114951236B (en) * | 2022-03-24 | 2024-04-05 | 江苏理工学院 | Resource treatment method for waste incineration fly ash |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |
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| WD01 | Invention patent application deemed withdrawn after publication |