JPS54112800A - Ammonia recovering method - Google Patents

Ammonia recovering method

Info

Publication number
JPS54112800A
JPS54112800A JP1961478A JP1961478A JPS54112800A JP S54112800 A JPS54112800 A JP S54112800A JP 1961478 A JP1961478 A JP 1961478A JP 1961478 A JP1961478 A JP 1961478A JP S54112800 A JPS54112800 A JP S54112800A
Authority
JP
Japan
Prior art keywords
contg
mineral acid
conduit
acid
mother liquor
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
JP1961478A
Other languages
Japanese (ja)
Other versions
JPS5717847B2 (en
Inventor
Hiroshi Okazaki
Tetsuya Kitagawa
Hiroshi Ushiyama
Ikuo Fukuda
Toyoki Tominaga
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.)
Nippon Steel Chemical and Materials Co Ltd
Original Assignee
Nippon Steel Chemical Co Ltd
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 Nippon Steel Chemical Co Ltd filed Critical Nippon Steel Chemical Co Ltd
Priority to JP1961478A priority Critical patent/JPS54112800A/en
Publication of JPS54112800A publication Critical patent/JPS54112800A/en
Publication of JPS5717847B2 publication Critical patent/JPS5717847B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Treating Waste Gases (AREA)
  • Physical Water Treatments (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

PURPOSE: To separation recover NH3 as NH4 salt of a mineral acid and prevent corrosion of the apparatus due to hydrogen sulfide acidified with the mineral acid, by contacting a gas contg. H2S and NH3 to mother liquor of the mineral acid contg. a high b.p., nitrogen-contg. heterocyclic cpd.
CONSTITUTION: Effluent from a process for hydrodesulfurizing a petroleum fraction contg. S and N is supplied to effluent stripper 3 through conduit 1 and heat exchanger 2. A mixed gas mainly consisting of H2S and NH3 stripped is fed to NH3 absorption tower 5, and a regenerated absorbing soln. from the bottom of stripper 3 is recycled through conduit 6. Tower 5 is filled with mother liquor of a mineral acid such as sulfuric acid, and the acid contains 0.1W2 wt% of a nitrogen-contg. heterocyclic cpd. of a b.p. above 115°C, e.g. quinolines or isoquinolines. Sulfuric acid and the corrosion inhibitor are supplied from conduits 7 and 8, respectively, and gas from conduit 4 is introduced into the mother liquor as bubbles to recover NH3 as ammonium sulfate. Corrosion of the apparatus due to hydrogen sulfide acidified with sulfuric acid is prevented with the heterocyclic cpd.
COPYRIGHT: (C)1979,JPO&Japio
JP1961478A 1978-02-24 1978-02-24 Ammonia recovering method Granted JPS54112800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1961478A JPS54112800A (en) 1978-02-24 1978-02-24 Ammonia recovering method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1961478A JPS54112800A (en) 1978-02-24 1978-02-24 Ammonia recovering method

Publications (2)

Publication Number Publication Date
JPS54112800A true JPS54112800A (en) 1979-09-03
JPS5717847B2 JPS5717847B2 (en) 1982-04-13

Family

ID=12004053

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1961478A Granted JPS54112800A (en) 1978-02-24 1978-02-24 Ammonia recovering method

Country Status (1)

Country Link
JP (1) JPS54112800A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4573106B2 (en) * 2004-12-20 2010-11-04 昌弘 小川 A method for separating and recovering ammonia and hydrogen sulfide from desulfurization wastewater.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281100A (en) * 1975-12-29 1977-07-07 Chisso Eng Co Ltd Process for preparing ammoniumsulfate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281100A (en) * 1975-12-29 1977-07-07 Chisso Eng Co Ltd Process for preparing ammoniumsulfate

Also Published As

Publication number Publication date
JPS5717847B2 (en) 1982-04-13

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