GB1412085A - Recovery of residual ammonia from weak aqueous solutions thereof - Google Patents

Recovery of residual ammonia from weak aqueous solutions thereof

Info

Publication number
GB1412085A
GB1412085A GB2556573*[A GB2556573A GB1412085A GB 1412085 A GB1412085 A GB 1412085A GB 2556573 A GB2556573 A GB 2556573A GB 1412085 A GB1412085 A GB 1412085A
Authority
GB
United Kingdom
Prior art keywords
ammonia
aqueous solutions
column
recovery
steam
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
Application number
GB2556573*[A
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.)
Individual
Original Assignee
Individual
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 to CA173,154A priority Critical patent/CA992024A/en
Priority to FR7320879A priority patent/FR2189319A1/en
Priority to BE132175A priority patent/BE800803A/en
Priority to AR248607A priority patent/AR194898A1/en
Priority to DE2331015A priority patent/DE2331015A1/en
Priority to NLAANVRAGE7308545,A priority patent/NL174936C/en
Priority to JP6885373A priority patent/JPS5734206B2/ja
Application filed by Individual filed Critical Individual
Priority to GB2556573*[A priority patent/GB1412085A/en
Priority to DE2362887A priority patent/DE2362887A1/en
Priority claimed from DE2362887A external-priority patent/DE2362887A1/en
Publication of GB1412085A publication Critical patent/GB1412085A/en
Expired 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
    • C01C1/10—Separation of ammonia from ammonia liquors, e.g. gas liquors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1412085 Recovering ammonia from aqueous solutions I MAVROVIC 25 Oct 1973 25565/73 Heading C1A An aqueous solution containing 0À1 to 10% by wt. of ammonia either as free dissolved ammonia, or fixed as ammonium carbamate, carbonate or bicarbonate, or urea is introduced into the upper section of a fractionating column, steam and a gas inert to the materials present in the exchanger (preferably CO 2 ) are introduced into the bottom of the column to strip the ammonia from the solution at 20 to 400 psig the amount of inert gas being from 0À1 to 10 moles of inert gas per mole of ammonia, the ammonia being removed as a gaseous overhead and the aqueous solution having its ammonia concentration lowered from 0À1 to 10% by wt. to be substantially free of ammonia (i.e. less than 20 p.p.m.). Preferably the steam is sparged into the bottom of the column, below which the CO 2 is introduced. Below this, optionally may be introduced oxygen to prevent possible corrosion.
GB2556573*[A 1972-06-21 1973-10-25 Recovery of residual ammonia from weak aqueous solutions thereof Expired GB1412085A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CA173,154A CA992024A (en) 1972-06-21 1973-06-04 Recovery of residual ammonia from weak aqueous solutions thereof
FR7320879A FR2189319A1 (en) 1972-06-21 1973-06-08 Recovering ammonia - eg from urea synthesis liquors
BE132175A BE800803A (en) 1972-06-21 1973-06-12 RECOVERY OF THE RESIDUAL AMMONIA CONTAINED IN SOLUTIONS AT LOW CONCENTRATION OF THEM
AR248607A AR194898A1 (en) 1972-06-21 1973-06-15 PROCEDURE TO RECOVER AMMONIA FROM AN AQUEOUS AMMONIA SOLUTION
DE2331015A DE2331015A1 (en) 1972-06-21 1973-06-18 PROCESS FOR RECOVERING REMAINING AMMONIA FROM WEAK AQUATIC SOLUTIONS OF THE SAME
NLAANVRAGE7308545,A NL174936C (en) 1972-06-21 1973-06-19 METHOD FOR RECOVERING REMAINING AMMONIA FROM DILUTED AQUEOUS SOLUTIONS THEREOF
JP6885373A JPS5734206B2 (en) 1972-06-21 1973-06-20
GB2556573*[A GB1412085A (en) 1973-10-25 1973-10-25 Recovery of residual ammonia from weak aqueous solutions thereof
DE2362887A DE2362887A1 (en) 1972-06-21 1973-12-18 Ammonia recovery from weak aq. solns. - by stripping with steam and an inert gas to recover all ammonia as overheads

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2556573*[A GB1412085A (en) 1973-10-25 1973-10-25 Recovery of residual ammonia from weak aqueous solutions thereof
DE2362887A DE2362887A1 (en) 1972-06-21 1973-12-18 Ammonia recovery from weak aq. solns. - by stripping with steam and an inert gas to recover all ammonia as overheads

Publications (1)

Publication Number Publication Date
GB1412085A true GB1412085A (en) 1975-10-29

Family

ID=25766259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2556573*[A Expired GB1412085A (en) 1972-06-21 1973-10-25 Recovery of residual ammonia from weak aqueous solutions thereof

Country Status (1)

Country Link
GB (1) GB1412085A (en)

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee