SU688427A1 - Method of regeneration od spent sulfuric acid - Google Patents
Method of regeneration od spent sulfuric acidInfo
- Publication number
- SU688427A1 SU688427A1 SU782603014A SU2603014A SU688427A1 SU 688427 A1 SU688427 A1 SU 688427A1 SU 782603014 A SU782603014 A SU 782603014A SU 2603014 A SU2603014 A SU 2603014A SU 688427 A1 SU688427 A1 SU 688427A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sulfuric acid
- regeneration
- spent sulfuric
- melt
- air
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
Дл осуществлени предлагаемого способа провод т следующие операции в указанной последовательности: готов т расплав пиросульфата кали и п тиокиси ванади ; отработанную серную кислоту подают на поверхность расплава, предварительно обработанную воздухом, или кислоту и воздух одновременно барботируют через расплав; полученный технологический газ отвод т . Пример. В лабораторном реакторе готов т расплав, состо щий из пиросульфата кали и п тиокиси ванади , и обрабатывают воздухом. Затем на поверхность расплава подают отработанную серную кислоту со скоростью 120 г/ч. Полученный технологический газ содержит SO2 и ЗОз. Сернистый и серный ангидрид определ ют на аппарате В1И-2. Анализ основан на растворении газов в дистиллированной воде с последующим титрованием образовавщихс кислот раствором иода и NaOH. В газе и конденсате механические и органические примеси не обнаружены. Результаты представлены в таблице.To implement the proposed method, the following operations are carried out in this sequence: a potassium pyrosulfate and vanadium pentoxide melt is prepared; spent sulfuric acid is fed to the surface of the melt, pre-treated with air, or acid and air are simultaneously bubbled through the melt; the resulting process gas is tapped. Example. In a laboratory reactor, a melt of potassium pyrosulfate and vanadium pentoxide is prepared and treated with air. Then spent sulfuric acid is fed to the surface of the melt at a rate of 120 g / h. The resulting process gas contains SO2 and ZOZ. Sulfuric acid and sulfuric anhydride are determined on a Bl-2 apparatus. The analysis is based on the dissolution of gases in distilled water, followed by titration of the resulting acids with a solution of iodine and NaOH. Mechanical and organic impurities were not found in gas and condensate. The results are presented in the table.
Через расплав барботируют воздух в смеси с кислотой: расход воздуха 40 л/ч, расход кислоты 80 г/ч.Air in a mixture with acid is bubbled through the melt: air consumption is 40 l / h, acid consumption is 80 g / h.
Использование предлагаемого способа по сравнению с известным позвол ет упростить процесс регенерации за счет получеHim серного ангидрида повышенной чистоты в одну стадию.The use of the proposed method in comparison with the known one allows to simplify the regeneration process due to the preparation of sulfuric anhydride of high purity in one stage.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782603014A SU688427A1 (en) | 1978-04-10 | 1978-04-10 | Method of regeneration od spent sulfuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782603014A SU688427A1 (en) | 1978-04-10 | 1978-04-10 | Method of regeneration od spent sulfuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU688427A1 true SU688427A1 (en) | 1979-09-30 |
Family
ID=20759057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782603014A SU688427A1 (en) | 1978-04-10 | 1978-04-10 | Method of regeneration od spent sulfuric acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU688427A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2114054C1 (en) * | 1991-05-24 | 1998-06-27 | Хальдор Топсеэ А/С | Method of regeneration of the spent sulfuric acid from chemical processes |
| EP1028088A1 (en) * | 1999-02-10 | 2000-08-16 | Fernando H. Garcia | Method for neutralising and/or regenerating acid baths and plant that carries out this method |
-
1978
- 1978-04-10 SU SU782603014A patent/SU688427A1/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2114054C1 (en) * | 1991-05-24 | 1998-06-27 | Хальдор Топсеэ А/С | Method of regeneration of the spent sulfuric acid from chemical processes |
| EP1028088A1 (en) * | 1999-02-10 | 2000-08-16 | Fernando H. Garcia | Method for neutralising and/or regenerating acid baths and plant that carries out this method |
| WO2000047518A1 (en) * | 1999-02-10 | 2000-08-17 | Bartolomei, Carlo Alfredo | Method for neutralising and/or regenerating acid baths and plant that carries out this method |
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