SU138232A1 - Method for the preparation of methyl salts - Google Patents
Method for the preparation of methyl saltsInfo
- Publication number
- SU138232A1 SU138232A1 SU676828A SU676828A SU138232A1 SU 138232 A1 SU138232 A1 SU 138232A1 SU 676828 A SU676828 A SU 676828A SU 676828 A SU676828 A SU 676828A SU 138232 A1 SU138232 A1 SU 138232A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- bromine
- preparation
- salts
- amount
- methyl salts
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Известен способ получени бромистых солей путем взаимодействи брома с растворами щелочей в присутствии мочевины, как восстановител , не дающего побочных реакций с элементарным бромом.A known method for producing bromine salts by reacting bromine with alkali solutions in the presence of urea as a reducing agent that does not produce side reactions with elemental bromine.
Предложен способ получени бромистых солей, например бромистого натри , бромистого кали или бромистого кальци , путем поглощени брома из бромовоздущной смеси раствором едкого натри или едкого кали , или известковым молоком соответственно в присутствии нелетучего восстановител мочевины, вз той в избытке на 1 -1,5% по сравнению с теоретическим количеством на эквивалент брома. В этих услови х получающиес растворы практически свободны от кислородных соединений брома. Удаление небольщого количества избытка мочевины осуществл етс нагреванием растворов до 60-65° или введением отмеренного количества бромной воды. Переработка растворов в дальнейщем проводитс общеизвестными методами.A method for producing bromide salts, such as sodium bromide, potassium bromide or calcium bromide, is proposed by absorbing bromine from the bromine-air mixture with a solution of sodium hydroxide or potassium hydroxide, or lime milk, respectively, in the presence of a non-volatile urea reducing agent taken in excess of 1-1.5% compared to the theoretical amount per bromine equivalent. Under these conditions, the resulting solutions are practically free of oxygen compounds of bromine. Removal of a small amount of excess urea is carried out by heating the solutions to 60-65 ° or by introducing a measured amount of bromine water. The processing of the solutions is subsequently carried out by well-known methods.
Отличием предложенного способа от известного вл етс то, что в данном случае известна реакци щелочных растворов с бромом используетс дл получени бромистых солей из бромовоздущной смеси, получаемой в процессе извлечени брома из рассолов по воздущному способу , т. е. в услови х значительного разбавлени паров брома воздухом с концентрацией несколько грамм на кубический метр. При этом поглощение брома ведут с избыточным количеством мочевины в щелочном растворе в количестве 101 -101,5% от теоретического с последующим нагреванием раствора до 60-65° с рассчитанным количеством бромной воды. Применением предложенного способа достигаетс устранение потерь восстановител с отработанным воздухом, так как восстановитель нелетучий, а также повыщение качества .продукта за счет снижени количества кислородных соединений брома в полученном продукте.The difference between the proposed method and the known method is that in this case, the known reaction of alkaline solutions with bromine is used to obtain bromine salts from the bromine-air mixture obtained in the process of extracting bromine from brines by the air method, i.e. under conditions of significant dilution of bromine vapor air with a concentration of several grams per cubic meter. In this case, the absorption of bromine is carried out with an excess amount of urea in an alkaline solution in the amount of 101-101.5% of the theoretical, followed by heating the solution to 60-65 ° with the calculated amount of bromine water. By using the proposed method, loss of the reducing agent with exhaust air is achieved, since the reducing agent is nonvolatile, as well as the product quality is improved by reducing the amount of oxygen compounds of bromine in the resulting product.
Перечисленные преимущества указывают на полезность предложенного способа получени бромных солей. Предложенный способ исследоThese advantages indicate the usefulness of the proposed method for the preparation of bromine salts. The proposed method of research
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU676828A SU138232A1 (en) | 1960-07-08 | 1960-07-08 | Method for the preparation of methyl salts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU676828A SU138232A1 (en) | 1960-07-08 | 1960-07-08 | Method for the preparation of methyl salts |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU813276863A Addition SU966448A2 (en) | 1981-04-09 | 1981-04-09 | Opened cooling device |
Publications (1)
Publication Number | Publication Date |
---|---|
SU138232A1 true SU138232A1 (en) | 1960-11-30 |
Family
ID=48294395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU676828A SU138232A1 (en) | 1960-07-08 | 1960-07-08 | Method for the preparation of methyl salts |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU138232A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4083942A (en) * | 1977-03-03 | 1978-04-11 | Great Lakes Chemical Corporation | Process for producing metal bromides |
-
1960
- 1960-07-08 SU SU676828A patent/SU138232A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4083942A (en) * | 1977-03-03 | 1978-04-11 | Great Lakes Chemical Corporation | Process for producing metal bromides |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1334185A (en) | Production of gypsum from combustion exhaust gas | |
SU138232A1 (en) | Method for the preparation of methyl salts | |
GB1373634A (en) | Preparation of ammonium and potassium zirconium carbonates | |
GB1077036A (en) | Process for the production of the sodium salt of 3-hydroxy-2-oxo-1(2h)-pyridine sulphonic acid and the production of 2,3-pyridine diol | |
US2866683A (en) | Manufacture of chlorine dioxide from an alkali metal chlorate and an alkali metal bisulfite | |
GB767629A (en) | Improved process for the preparation of sodium bicarbonate and ammonium sulphate | |
SU115836A1 (en) | Chlorine dioxide production method | |
GB1124547A (en) | Production of urea | |
US2834649A (en) | Manufacture of chlorine dioxide | |
SU472900A1 (en) | Method of producing sodium fluoride | |
SU783229A1 (en) | Method of sodium bromide production | |
SU50730A1 (en) | The method of using nitrogen oxides in the production of sulfuric acid | |
SU802181A1 (en) | Method of producing sodium methasilicate pentahydrate | |
SU504703A1 (en) | The method of obtaining rubidium nitrate from its chloride | |
SU136721A1 (en) | The method of trapping iodine from iodine air mixture | |
GB1116126A (en) | Process for the preparation of a mercapto-thiophosphoric acid ester | |
GB1520698A (en) | Production of sodium sulphite | |
GB1015107A (en) | Improvements in or relating to cyclohexylamine sulphamic acid salts | |
GB1075286A (en) | Process for producing potassium azide | |
SU385925A1 (en) | METHOD OF OBTAINING SPRAY CHROME SULFATE | |
SU96015A1 (en) | Method for determination of sulfuric anhydride mixed with sulfur dioxide and air | |
SU539856A1 (en) | The method of obtaining complex mineral fertilizers | |
US2866682A (en) | Manufacture of chlorine dioxide from an alkali metal chlorate and an alkali metal nitrite | |
SU611884A1 (en) | Method of obtaining sodium bisulfate hydrate | |
GB733886A (en) | Process of producing glucoheptonic acid and/or calcium glucoheptonate for the preparation of derivatives thereof |