RU96104255A - METHOD FOR REMOVING UNWANTED COLORING SUBSTANCES FROM CHLORIC-HYDROGENIC ACID - Google Patents

METHOD FOR REMOVING UNWANTED COLORING SUBSTANCES FROM CHLORIC-HYDROGENIC ACID

Info

Publication number
RU96104255A
RU96104255A RU96104255/25A RU96104255A RU96104255A RU 96104255 A RU96104255 A RU 96104255A RU 96104255/25 A RU96104255/25 A RU 96104255/25A RU 96104255 A RU96104255 A RU 96104255A RU 96104255 A RU96104255 A RU 96104255A
Authority
RU
Russia
Prior art keywords
chloric
acid
reducing agent
coloring substances
removing unwanted
Prior art date
Application number
RU96104255/25A
Other languages
Russian (ru)
Other versions
RU2107020C1 (en
Inventor
Волль Рагнар
Original Assignee
Норск Хюдро А.С.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NO19942074A external-priority patent/NO179243B1/en
Application filed by Норск Хюдро А.С. filed Critical Норск Хюдро А.С.
Application granted granted Critical
Publication of RU2107020C1 publication Critical patent/RU2107020C1/en
Publication of RU96104255A publication Critical patent/RU96104255A/en

Links

Claims (7)

1. Способ удаления окрашивающих веществ, таких как железо и галогены, из хлористоводородной кислоты, отличающийся тем, что из кислоты удаляют любое содержание железа и затем в кислоту вводят азотсодержащий восстанавливающий агент.1. A method of removing coloring materials, such as iron and halogens, from hydrochloric acid, characterized in that any iron content is removed from the acid and then a nitrogen-containing reducing agent is introduced into the acid. 2. Способ по п.1, отличающийся тем, что в качестве восстанавливающего агента используют соединения содержащие гидроксиламин. 2. The method according to claim 1, characterized in that as the reducing agent using compounds containing hydroxylamine. 3. Способ по п.2, отличающийся тем, что в качестве восстанавливающего агента используют гидроксиламин гидрохлорид. 3. The method according to claim 2, characterized in that hydroxylamine hydrochloride is used as the reducing agent. 4. Способ по п.1, отличающийся тем, что восстанавливающий агент используют в избытке в сравнении со стехиометрическим количеством. 4. The method according to claim 1, characterized in that the reducing agent is used in excess in comparison with a stoichiometric amount. 5. Способ по п.1, отличающийся тем, что железо удаляют фильтрацией и ионным обменом. 5. The method according to claim 1, characterized in that the iron is removed by filtration and ion exchange. 6. Применение гидроксиламина гидрохлорида для удаления нежелательной окраски из хлористоводородной кислоты. 6. The use of hydroxylamine hydrochloride to remove unwanted stains from hydrochloric acid. 7. Применение по п.6, где окрашивающими веществами служат хлор и бром. 7. The use according to claim 6, where the coloring substances are chlorine and bromine.
RU96104255A 1994-06-03 1995-05-31 Method of removing undesired coloring substances from hydrochloric acid RU2107020C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO942074 1994-06-03
NO19942074A NO179243B1 (en) 1994-06-03 1994-06-03 Process for removing unwanted color from hydrochloric acid, and using hydroxylamine hydrochloride to remove unwanted color from hydrochloric acid
PCT/NO1995/000085 WO1995033680A1 (en) 1994-06-03 1995-05-31 Method for the removal of unwanted colour from hydrochloric acid

Publications (2)

Publication Number Publication Date
RU2107020C1 RU2107020C1 (en) 1998-03-20
RU96104255A true RU96104255A (en) 1998-05-27

Family

ID=19897144

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96104255A RU2107020C1 (en) 1994-06-03 1995-05-31 Method of removing undesired coloring substances from hydrochloric acid

Country Status (12)

Country Link
US (1) US6290927B1 (en)
EP (1) EP0725759B1 (en)
JP (1) JPH08509455A (en)
CN (1) CN1040865C (en)
AT (1) ATE184860T1 (en)
AU (1) AU2684395A (en)
DE (1) DE69512378T2 (en)
ES (1) ES2138215T3 (en)
NO (1) NO179243B1 (en)
PL (1) PL179886B1 (en)
RU (1) RU2107020C1 (en)
WO (1) WO1995033680A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10101394A1 (en) * 2001-01-15 2002-07-18 Bayer Ag Re-utilization of Halex reaction salt mixture by-product involves treating with sulfuric acid and then calcium fluoride to give a calcium sulfate binder useful in building materials
JP2007022956A (en) * 2005-07-15 2007-02-01 Mitsubishi Gas Chem Co Inc Method for producing high purity aminomethylene phosphonic acid
US20160130143A1 (en) 2013-06-17 2016-05-12 Reliance Industries Limited A Process For The Removal Of Metal Contaminants From Fluids
CN108383083A (en) * 2018-03-16 2018-08-10 三峡大学 A kind of support type hydrochloric acid decolorising agent and preparation method thereof and decoloration process
CN108435137A (en) * 2018-03-16 2018-08-24 三峡大学 The support type reagent and preparation method of a kind of decoloration of hydrochloric acid and the removing of hydrochloric acid metal ion

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1770010A (en) * 1927-04-27 1930-07-08 British Dyestuffs Corp Ltd Removal of free chlorine and bromine from fluid mixtures
US2787525A (en) * 1952-01-23 1957-04-02 Columbia Southern Chem Corp Removal of free chlorine from hci
US2787523A (en) * 1952-02-23 1957-04-02 Columbia Southern Chem Corp Removal of chlorine from hci
US3855400A (en) * 1972-02-10 1974-12-17 Hooker Chemicals Plastics Corp Purification of hydrochloric acid
DE2836580C3 (en) * 1978-08-21 1981-11-05 Chemische Werke Hüls AG, 4370 Marl Process for the separation of hydrogen chloride and hydrogen bromide
US4349525A (en) * 1981-04-21 1982-09-14 Chisso Corporation Process for purifying hydrochloric acid produced from alkali chloride and sulfuric acid
JPS6136102A (en) * 1984-07-27 1986-02-20 Asahi Glass Co Ltd Method of removing hydrogen fluoride contained in hydrogen chloride
JPH02233503A (en) * 1989-03-06 1990-09-17 Daiso Co Ltd Purification of hydrochloric acid
DE4110177C2 (en) * 1991-03-27 1995-01-05 Qvf Glastech Gmbh Process for the production of hydrochloric acid purified from foreign halogen
DE4344200C2 (en) * 1993-12-23 1995-11-30 Schering Ag Process for the extraction of hydrochloric acid from bromine and iodine containing flue gases

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