SU611884A1 - Method of obtaining sodium bisulfate hydrate - Google Patents

Method of obtaining sodium bisulfate hydrate

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Publication number
SU611884A1
SU611884A1 SU762354055A SU2354055A SU611884A1 SU 611884 A1 SU611884 A1 SU 611884A1 SU 762354055 A SU762354055 A SU 762354055A SU 2354055 A SU2354055 A SU 2354055A SU 611884 A1 SU611884 A1 SU 611884A1
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SU
USSR - Soviet Union
Prior art keywords
solution
sodium
acid
sulfuric acid
hydrate
Prior art date
Application number
SU762354055A
Other languages
Russian (ru)
Inventor
Анатолий Павлович Довгопол
Николай Михайлович Давыденко
Инна Владимировна Яковленко
Original Assignee
Украинский научно-исследовательский углехимический институт
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Application filed by Украинский научно-исследовательский углехимический институт filed Critical Украинский научно-исследовательский углехимический институт
Priority to SU762354055A priority Critical patent/SU611884A1/en
Application granted granted Critical
Publication of SU611884A1 publication Critical patent/SU611884A1/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (2)

вании раствора до 90 С, после чего в него начинают дозировать 5О-98%-ную серную кислоту так, чтобы в системе можно было поддерживать мол рное отношение Na2COj: , равное 1:1,9-2,2. Дл  предупреждени  преждевременного обезвоживани  реакционней массы и чрезмерного её вспенивани  за счёт выдел ющейс  газообразной углекислоты, реагенты дозйруют постепенно, порци ми или равномерно , по мере их взаимодействи  и удалени  углекислоты из раствора. После окончани  подачи в систему серной кислоты полученный раствор бисульфат натри  упаривают при 135-14О С.до обра зовани  густой массы, из которой криста- таллизацией выдел ют кристаллический гид рат бисульфата натри . Пример. 1 Об г безводного углеки лого натри  раствор ют в воде в соотноше НИИ 1:5 (весовое), после чего раствор нагревают до 89 С. К раствору добавл ют серную кислоту 175%-ную), вз тую в мил ном соотношении к безводному углекислом натрию 1:2. Кислоту дозируют порци ми n интенсивном перемешивании. После прек ращени  .подачи кислоты раствор упаривают при,135 С до получени  густой массы, из которой выдел ют кристаллический гидрат сульфата натрий с содержанием основного вещества 99,93% и содержанием примесей 0,07%. Формула изобретени  Способ получени  гидрата бисульфата натри  путем обработки натрийсодержаще- bo сырь  водным раствором серной кисл1 ты с последующей упаркой раствора, о тпичаюшийс  тем, что, с целью повышени  степени чистоты и выхода целевого продукта и снижени  энергозатрат в качестве .натрийсодержащего сырь  используют углекисльтй натрий в мольном отношении к кислоте 1: 1,9-2,2, Источники информации, прин тые во внимание при экспертизе: 1.Авторское свидетельство СССР № 253790, кл. С01 П 5/02, 07.10.69. in the solution to 90 ° C, after which 5O-98% sulfuric acid is started to be metered into it so that the molar ratio of Na2COj: equal to 1: 1.9-2.2 can be maintained in the system. To prevent the premature dehydration of the reaction mass and its excessive foaming due to the liberated gaseous carbon dioxide, the reagents are gradually measured, in portions or evenly, as they interact and the carbon dioxide is removed from the solution. After the supply of sulfuric acid to the system is complete, the resulting sodium bisulfate solution is evaporated at 135-14 ° C. To form a thick mass, from which crystalline sodium bisulfate hydrate is crystallized. Example. 1 About g of anhydrous sodium carbonate is dissolved in water in a ratio of scientific research institute 1: 5 (by weight), after which the solution is heated to 89 C. To the solution is added sulfuric acid (175%), taken in the ratio of anhydrous carbonic acid. sodium 1: 2. The acid is metered in portions of n vigorous stirring. After the termination of the acid supply, the solution is evaporated at 135 ° C to obtain a thick mass, from which crystalline sodium sulfate hydrate is recovered with a basic substance content of 99.93% and an impurity content of 0.07%. The method of obtaining sodium bisulfate hydrate by treating sodium-containing raw materials with an aqueous solution of sulfuric acid followed by stripping the solution, which is because carbon dioxide in sodium is used to increase the purity and yield of the target product and reduce energy consumption. molar ratio to acid 1: 1,9-2,2. Sources of information taken into account during examination: 1. Author's certificate of the USSR No. 253790, cl. C01 P 5/02, 10/07/19. 2.Кар кин IQ В., Ангелов И. И. Чистые химические реактивы, М.-Л., ГХИ, 1947, с. 391.2. Karin IQ V., Angelov I. I. Pure chemical reagents, M.-L., GHI, 1947, p. 391.
SU762354055A 1976-05-05 1976-05-05 Method of obtaining sodium bisulfate hydrate SU611884A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762354055A SU611884A1 (en) 1976-05-05 1976-05-05 Method of obtaining sodium bisulfate hydrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762354055A SU611884A1 (en) 1976-05-05 1976-05-05 Method of obtaining sodium bisulfate hydrate

Publications (1)

Publication Number Publication Date
SU611884A1 true SU611884A1 (en) 1978-06-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU762354055A SU611884A1 (en) 1976-05-05 1976-05-05 Method of obtaining sodium bisulfate hydrate

Country Status (1)

Country Link
SU (1) SU611884A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686097A (en) * 1984-04-05 1987-08-11 Hoechst Aktiengesellschaft Process for the removal of the residual sulfuric acid from the reaction mixture produced in the sulfoxidation of paraffins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686097A (en) * 1984-04-05 1987-08-11 Hoechst Aktiengesellschaft Process for the removal of the residual sulfuric acid from the reaction mixture produced in the sulfoxidation of paraffins

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