JPS5539218A - Method and device for preventing clogging of lime still in process for deammoniating waste liquor containing ammonium salt - Google Patents

Method and device for preventing clogging of lime still in process for deammoniating waste liquor containing ammonium salt

Info

Publication number
JPS5539218A
JPS5539218A JP11131378A JP11131378A JPS5539218A JP S5539218 A JPS5539218 A JP S5539218A JP 11131378 A JP11131378 A JP 11131378A JP 11131378 A JP11131378 A JP 11131378A JP S5539218 A JPS5539218 A JP S5539218A
Authority
JP
Japan
Prior art keywords
liquid
still
lime
temp
crystals
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.)
Granted
Application number
JP11131378A
Other languages
Japanese (ja)
Other versions
JPS5635913B2 (en
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 JP11131378A priority Critical patent/JPS5539218A/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 JPS5539218A publication Critical patent/JPS5539218A/en
Priority to US06/213,625 priority patent/US4345975A/en
Publication of JPS5635913B2 publication Critical patent/JPS5635913B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Physical Water Treatments (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

PURPOSE: To prevent occurrence of a lime still clogging accident by heating a Ca cpd.-contg. liquid after reaction with slaked lime in a deammoniation process to a predetermined temp. to deposit and grow Ca cpd. crystals and by charging the liquid into a lime still.
CONSTITUTION: Ammonium salt-contg. waste liquor is fed to reaction vessels 1, 2, where slaked lime is added. The reaction liquid is supplied to thickener 3 to separate reaction products and excess slaked lime. The separated liquid contg. free ammonia and dissolved Ca cpds. is heat exchanged for deammoniated water fed from the bottom of lime still 6 in heat exchanger 5. The liquid is then sent to heat aging vessel 4 kept at a temp. equal to the top temp. of still 6 with automatic temp. controller 10. In vessel 4 crystals are deposited from the liquid owing to a difference in solubility. After well growing the crystals the liquid is charged into still 6, thus enabling stable continuous operation of still 6.
COPYRIGHT: (C)1980,JPO&Japio
JP11131378A 1978-09-12 1978-09-12 Method and device for preventing clogging of lime still in process for deammoniating waste liquor containing ammonium salt Granted JPS5539218A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP11131378A JPS5539218A (en) 1978-09-12 1978-09-12 Method and device for preventing clogging of lime still in process for deammoniating waste liquor containing ammonium salt
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
JP11131378A JPS5539218A (en) 1978-09-12 1978-09-12 Method and device for preventing clogging of lime still in process for deammoniating waste liquor containing ammonium salt

Publications (2)

Publication Number Publication Date
JPS5539218A true JPS5539218A (en) 1980-03-19
JPS5635913B2 JPS5635913B2 (en) 1981-08-20

Family

ID=14558049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11131378A Granted JPS5539218A (en) 1978-09-12 1978-09-12 Method and device for preventing clogging of lime still in process for deammoniating waste liquor containing ammonium salt

Country Status (1)

Country Link
JP (1) JPS5539218A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001276891A (en) * 2000-03-30 2001-10-09 Sumitomo Heavy Ind Ltd System and method for nitrogen-containing drain treatment
CN112209555A (en) * 2020-10-26 2021-01-12 四川省乐山锐丰冶金有限公司 Method and device for recycling and producing ammonium chloride by utilizing rare earth hydrometallurgy ammonia nitrogen-containing extraction wastewater

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50144267A (en) * 1974-05-11 1975-11-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50144267A (en) * 1974-05-11 1975-11-20

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001276891A (en) * 2000-03-30 2001-10-09 Sumitomo Heavy Ind Ltd System and method for nitrogen-containing drain treatment
JP4485007B2 (en) * 2000-03-30 2010-06-16 住友重機械エンバイロメント株式会社 Nitrogen-containing wastewater treatment system
CN112209555A (en) * 2020-10-26 2021-01-12 四川省乐山锐丰冶金有限公司 Method and device for recycling and producing ammonium chloride by utilizing rare earth hydrometallurgy ammonia nitrogen-containing extraction wastewater

Also Published As

Publication number Publication date
JPS5635913B2 (en) 1981-08-20

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