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RU2013153874A - METHOD FOR PRODUCING SODIUM SULPHATE - Google Patents

METHOD FOR PRODUCING SODIUM SULPHATE Download PDF

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Publication number
RU2013153874A
RU2013153874A RU2013153874/05A RU2013153874A RU2013153874A RU 2013153874 A RU2013153874 A RU 2013153874A RU 2013153874/05 A RU2013153874/05 A RU 2013153874/05A RU 2013153874 A RU2013153874 A RU 2013153874A RU 2013153874 A RU2013153874 A RU 2013153874A
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RU
Russia
Prior art keywords
sodium
nitrite
urea
sulfuric acid
molar ratio
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Application number
RU2013153874/05A
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Russian (ru)
Other versions
RU2556927C2 (en
Inventor
Борис Михайлович Ласкин
Олеся Николаевна Вознюк
Рустем Ахтямович Шайбаков
Original Assignee
Федеральное государственное унитарное предприятие "Российский научный центр "Прикладная химия"
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Priority to RU2013153874/05A priority Critical patent/RU2556927C2/en
Publication of RU2013153874A publication Critical patent/RU2013153874A/en
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Publication of RU2556927C2 publication Critical patent/RU2556927C2/en

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Abstract

Способ получения сульфата натрия, отличающийся тем, что в водный раствор сульфата натрия, содержащий примеси нитрата и нитрита натрия, добавляют карбамид и бисульфат натрия при мольном соотношении карбамид:бисульфат натрия:сумма нитрата и нитрита натрия 0,5:1,0:1,0 или серную кислоту при мольном соотношении карбамид:серная кислота:сумма нитрата и нитрита натрия 0,5:0,5:1,0, раствор доводят до кипения, воду выпаривают до температуры реакционной массы 125°С, остаток сушат при температуре 140-200°С в течении не менее 15 мин.A method of producing sodium sulfate, characterized in that in the aqueous sodium sulfate solution containing impurities of sodium nitrate and sodium nitrite, carbamide and sodium bisulfate are added at a molar ratio of urea: sodium bisulfate: the amount of sodium nitrate and sodium nitrite is 0.5: 1.0: 1, 0 or sulfuric acid with a molar ratio of urea: sulfuric acid: the sum of sodium nitrate and nitrite 0.5: 0.5: 1.0, the solution is brought to a boil, the water is evaporated to a temperature of the reaction mass of 125 ° C, the residue is dried at a temperature of 140- 200 ° C for at least 15 minutes

Claims (1)

Способ получения сульфата натрия, отличающийся тем, что в водный раствор сульфата натрия, содержащий примеси нитрата и нитрита натрия, добавляют карбамид и бисульфат натрия при мольном соотношении карбамид:бисульфат натрия:сумма нитрата и нитрита натрия 0,5:1,0:1,0 или серную кислоту при мольном соотношении карбамид:серная кислота:сумма нитрата и нитрита натрия 0,5:0,5:1,0, раствор доводят до кипения, воду выпаривают до температуры реакционной массы 125°С, остаток сушат при температуре 140-200°С в течении не менее 15 мин. A method of producing sodium sulfate, characterized in that in the aqueous sodium sulfate solution containing impurities of sodium nitrate and sodium nitrite, carbamide and sodium bisulfate are added at a molar ratio of urea: sodium bisulfate: the amount of sodium nitrate and sodium nitrite is 0.5: 1.0: 1, 0 or sulfuric acid with a molar ratio of urea: sulfuric acid: the sum of sodium nitrate and nitrite 0.5: 0.5: 1.0, the solution is brought to a boil, the water is evaporated to a temperature of the reaction mass of 125 ° C, the residue is dried at a temperature of 140- 200 ° C for at least 15 minutes
RU2013153874/05A 2013-12-04 2013-12-04 Method of producing sodium sulphate RU2556927C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2013153874/05A RU2556927C2 (en) 2013-12-04 2013-12-04 Method of producing sodium sulphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2013153874/05A RU2556927C2 (en) 2013-12-04 2013-12-04 Method of producing sodium sulphate

Publications (2)

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RU2013153874A true RU2013153874A (en) 2015-06-10
RU2556927C2 RU2556927C2 (en) 2015-07-20

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RU2013153874/05A RU2556927C2 (en) 2013-12-04 2013-12-04 Method of producing sodium sulphate

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2610076C1 (en) * 2015-11-10 2017-02-07 Федеральное государственное унитарное предприятие "Российский научный центр "Прикладная химия" Method of extracting sodium sulphate and metal nitrates
RU2633593C1 (en) * 2016-04-28 2017-10-13 Акционерное общество "Салаватский химический завод" Method of cleaning sodium sulphate from impurities of nitrate and/or sodium nitrite

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1495296A1 (en) * 1987-06-26 1989-07-23 Предприятие П/Я А-3844 Method of extracting sodium sulfate
SU1495297A1 (en) * 1987-06-26 1989-07-23 Институт общей и неорганической химии им.Н.С.Курнакова Method of extracting sodium sulfate
SU1662932A1 (en) * 1988-04-05 1991-07-15 Уральский лесотехнический институт им.Ленинского комсомола Method of cleaning sodium sulfate

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RU2556927C2 (en) 2015-07-20

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Effective date: 20220425