JPS55102488A - Cleaning of ammonia still - Google Patents

Cleaning of ammonia still

Info

Publication number
JPS55102488A
JPS55102488A JP879179A JP879179A JPS55102488A JP S55102488 A JPS55102488 A JP S55102488A JP 879179 A JP879179 A JP 879179A JP 879179 A JP879179 A JP 879179A JP S55102488 A JPS55102488 A JP S55102488A
Authority
JP
Japan
Prior art keywords
still
acid
pipe
cleaning
gas
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.)
Pending
Application number
JP879179A
Other languages
Japanese (ja)
Inventor
Eiji Abe
Koji Tonooka
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.)
JFE Steel Corp
Kawatetsu Kagaku KK
Original Assignee
Kawasaki Steel Corp
Kawatetsu Kagaku KK
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 Kawasaki Steel Corp, Kawatetsu Kagaku KK filed Critical Kawasaki Steel Corp
Priority to JP879179A priority Critical patent/JPS55102488A/en
Priority to CA000323969A priority patent/CA1135653A/en
Priority to FR7907371A priority patent/FR2436109A1/en
Priority to IT7948480A priority patent/IT1163977B/en
Priority to DE19792911745 priority patent/DE2911745A1/en
Priority to GB7911074A priority patent/GB2029812B/en
Publication of JPS55102488A publication Critical patent/JPS55102488A/en
Priority to US06/213,625 priority patent/US4345975A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Physical Water Treatments (AREA)

Abstract

PURPOSE: To shorten the downtime by performing cleaning in a short time by the procedure in which, in case where the tray of ammonia still is blocked by the adhesion of Ca salts, etc., an acid, etc., is filled up the still and then a gas is injected into the still to dissolve stuck substances.
CONSTITUTION: In the cleaning of the still 1, the operation of ammonia-stripping is stopped and waste water staying in the still 1 and the pipes is discharged to the outside. Then, a mixture of an acid, e.g., a 2W5% hydrochloric acid, etc., and an inhibitor is passed in order from the acid tank 10 to the pipe 11, the pump 7, the treated water feeding pipe 8, the heat exchanger 9, the treated water discharge pipe 14, the acid washing pipe 13, the valve 17, and the heat exchanger 9 until the still 1 reaches a fill- up state. Then, nitrogen gas, etc., from the gas pipe 5 is blown into the still through the blow pipe 6, whereupon acid is stirred by the gas to dissolve Ca salt adhered to the tray. Then, the acid after cleaning is discharged from the pipe 14 and the tray 1 is washed with water.
COPYRIGHT: (C)1980,JPO&Japio
JP879179A 1978-09-12 1979-01-30 Cleaning of ammonia still Pending JPS55102488A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP879179A JPS55102488A (en) 1979-01-30 1979-01-30 Cleaning of ammonia still
CA000323969A CA1135653A (en) 1978-09-12 1979-03-22 Apparatus for treatment of ammoniacal waste liquid
FR7907371A FR2436109A1 (en) 1978-09-12 1979-03-23 APPARATUS FOR THE TREATMENT OF AMMONIAL RESIDUAL LIQUIDS
IT7948480A IT1163977B (en) 1978-09-12 1979-03-26 APPARATUS FOR THE TREATMENT OF AMMONIAAL EXHAUST LIQUIDS
DE19792911745 DE2911745A1 (en) 1978-09-12 1979-03-26 DEVICE FOR TREATING AN AMMONIACAL WASTE LIQUID
GB7911074A GB2029812B (en) 1978-09-12 1979-03-29 Treating ammoniacal waste
US06/213,625 US4345975A (en) 1978-09-12 1980-12-05 Process for preventing blockage in distillation column of treatment apparatus for ammoniacal waste liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP879179A JPS55102488A (en) 1979-01-30 1979-01-30 Cleaning of ammonia still

Publications (1)

Publication Number Publication Date
JPS55102488A true JPS55102488A (en) 1980-08-05

Family

ID=11702679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP879179A Pending JPS55102488A (en) 1978-09-12 1979-01-30 Cleaning of ammonia still

Country Status (1)

Country Link
JP (1) JPS55102488A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105858771A (en) * 2016-05-25 2016-08-17 中冶焦耐工程技术有限公司 Ammonia stilling device cleaning method and system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5316359A (en) * 1976-06-14 1978-02-15 Bethlehem Steel Corp Method and apparatus for removing ammonia from dilute ammonia solution

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5316359A (en) * 1976-06-14 1978-02-15 Bethlehem Steel Corp Method and apparatus for removing ammonia from dilute ammonia solution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105858771A (en) * 2016-05-25 2016-08-17 中冶焦耐工程技术有限公司 Ammonia stilling device cleaning method and system

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