DE3772656D1 - Verfahren zur gewinnung von ammoniak und fluorid aus ammoniumfluorid-loesungen. - Google Patents

Verfahren zur gewinnung von ammoniak und fluorid aus ammoniumfluorid-loesungen.

Info

Publication number
DE3772656D1
DE3772656D1 DE8787109111T DE3772656T DE3772656D1 DE 3772656 D1 DE3772656 D1 DE 3772656D1 DE 8787109111 T DE8787109111 T DE 8787109111T DE 3772656 T DE3772656 T DE 3772656T DE 3772656 D1 DE3772656 D1 DE 3772656D1
Authority
DE
Germany
Prior art keywords
fluoride
solutions
producing ammonia
ammonium
ammonium fluoride
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE8787109111T
Other languages
English (en)
Inventor
Kent D Campbell
Lee B Crampton
Laura J Dietsche
Keith D Hovda
George K Tyson
Charles A Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Application granted granted Critical
Publication of DE3772656D1 publication Critical patent/DE3772656D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/026—Preparation of ammonia from inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/19—Fluorine; Hydrogen fluoride
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/02—Fluorides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Pyridine Compounds (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Extraction Or Liquid Replacement (AREA)
DE8787109111T 1986-07-21 1987-06-24 Verfahren zur gewinnung von ammoniak und fluorid aus ammoniumfluorid-loesungen. Expired - Fee Related DE3772656D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/887,587 US4713231A (en) 1986-07-21 1986-07-21 Process for the recovery of ammonia and fluoride values from ammonium fluoride solutions

Publications (1)

Publication Number Publication Date
DE3772656D1 true DE3772656D1 (de) 1991-10-10

Family

ID=25391455

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787109111T Expired - Fee Related DE3772656D1 (de) 1986-07-21 1987-06-24 Verfahren zur gewinnung von ammoniak und fluorid aus ammoniumfluorid-loesungen.

Country Status (13)

Country Link
US (1) US4713231A (de)
EP (1) EP0254063B1 (de)
JP (1) JP2516637B2 (de)
KR (1) KR900006903B1 (de)
CN (1) CN1012567B (de)
AU (1) AU587706B2 (de)
BR (1) BR8703760A (de)
CA (1) CA1288212C (de)
DE (1) DE3772656D1 (de)
ES (1) ES2024457B3 (de)
HU (1) HU201497B (de)
IL (1) IL83191A (de)
SU (1) SU1727530A3 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4994252A (en) * 1990-02-09 1991-02-19 Dowelanco Removal of potassium chloride from solvents
US4976946A (en) * 1990-02-09 1990-12-11 The Dow Chemical Company Separation of potassium salts
JPH0533169A (ja) * 1991-07-26 1993-02-09 Toomen Constr Kk フツ素及びアンモニア化合物を含むエツチング廃液の処理・回収方法
DE59203900D1 (de) * 1991-12-16 1995-11-09 Neumann & Stallherm Gmbh Verfahren zur Gewinnung von Flussspat (CaF2) und Ammoniak bzw. Ammoniakwasser aus einer wässrigen Ammoniumfluoridlösung als Abfallstoff der Brennelement-Herstellung.
CA2199723A1 (en) * 1994-09-15 1996-03-21 Alliedsignal Inc. Process for treating an aqueous kf waste stream and for converting kf into hf and koh
US7033562B2 (en) * 2002-10-16 2006-04-25 Kion Corporation Ammonia recovery in the preparation of silazanes and polysilazanes
US7229601B2 (en) * 2004-02-06 2007-06-12 Seh-America, Inc. Ammonia reclamation system
JP5250997B2 (ja) * 2006-04-27 2013-07-31 住友化学株式会社 フッ化カリウム分散液およびそれを用いる含フッ素有機化合物の製造方法
EP2471741A1 (de) * 2006-04-27 2012-07-04 Sumitomo Chemical Company, Limited Kaliumfluorid
CN101376509B (zh) * 2007-08-31 2010-11-17 多氟多化工股份有限公司 一种制备氟化钾的方法
KR102190985B1 (ko) * 2020-06-04 2020-12-14 최윤진 유기산을 이용하여 암모늄계 불소화합물 함유 폐액으로부터 고순도 대입경 불화칼슘 입자의 회수방법
CN115477315B (zh) * 2022-10-27 2024-01-30 无锡中天固废处置有限公司 一种利用缓冲氧化物刻蚀废液制备氟化钾的方法
CN116924434A (zh) * 2023-06-28 2023-10-24 三立福新材料(福建)有限公司 一种高纯氟化铵的制备方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1581819A (en) * 1925-05-09 1926-04-20 Siegel Wilhelm Process of manufacturing sodium fluoride from silicofluorine compounds
US1928510A (en) * 1930-11-14 1933-09-26 Koppers Co Inc Production of pure ammonia
GB529852A (en) * 1939-06-03 1940-11-29 Bataafsche Petroleum A process for the removal of water by distillation or rectification
US2285093A (en) * 1939-10-28 1942-06-02 Vaman R Kokatnur Mixture of materials and method of making
US2339160A (en) * 1940-08-02 1944-01-11 Shell Dev Distillation process
US2527320A (en) * 1944-10-14 1950-10-24 Robert C Mcharness Dehydration of alkali-metal acid fluorides
US2781244A (en) * 1952-09-18 1957-02-12 Allied Chem & Dye Corp Controlled recovery of ammonia from liquors containing fixed ammonia values
US3359076A (en) * 1964-01-31 1967-12-19 Dow Chemical Co Precipitation of potassium halides from mixed brines using organic solvents
GB1306517A (en) * 1970-06-08 1973-02-14 Ici Ltd Manufacture of halogenated pyridine derivatives
GB1306596A (en) * 1970-07-21 1973-02-14 Ici Ltd Manufacture of hydroxy-halogenopyridines or salts thereof
GB1340421A (en) * 1971-01-14 1973-12-12 Ici Ltd Manufacture of chlorofluoropyridines
FI47081C (fi) * 1971-12-13 1973-09-10 Kemira Oy Menetelmä lannoiteteollisuudessa sivutuotteena saadun fluorin jalostam iseksi.
US3920419A (en) * 1974-04-10 1975-11-18 Republic Steel Corp Method of removing ammonia from ammonia containing liquor
US4542221A (en) * 1981-05-18 1985-09-17 The Dow Chemical Company Exchanging fluorine for chlorine in a chlorinated pyridine with an alkali metal fluoride

Also Published As

Publication number Publication date
CN1012567B (zh) 1991-05-08
IL83191A0 (en) 1987-12-31
US4713231A (en) 1987-12-15
HU201497B (en) 1990-11-28
HUT45947A (en) 1988-09-28
EP0254063A2 (de) 1988-01-27
AU7502787A (en) 1988-01-28
ES2024457B3 (es) 1992-03-01
JP2516637B2 (ja) 1996-07-24
CN87104895A (zh) 1988-02-03
KR880001527A (ko) 1988-04-23
AU587706B2 (en) 1989-08-24
CA1288212C (en) 1991-09-03
IL83191A (en) 1990-11-05
BR8703760A (pt) 1988-03-29
KR900006903B1 (ko) 1990-09-24
EP0254063A3 (en) 1988-04-20
EP0254063B1 (de) 1991-09-04
JPS6335415A (ja) 1988-02-16
SU1727530A3 (ru) 1992-04-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee