GB177056A - Method for the evaporation, concentration and drying of solutions of urea - Google Patents

Method for the evaporation, concentration and drying of solutions of urea

Info

Publication number
GB177056A
GB177056A GB834321A GB834321A GB177056A GB 177056 A GB177056 A GB 177056A GB 834321 A GB834321 A GB 834321A GB 834321 A GB834321 A GB 834321A GB 177056 A GB177056 A GB 177056A
Authority
GB
United Kingdom
Prior art keywords
urea
mist
solutions
evaporation
drying
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
GB834321A
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.)
Metallbank und Metallurgische Gesellschaft AG
Original Assignee
Metallbank und Metallurgische Gesellschaft AG
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 Metallbank und Metallurgische Gesellschaft AG filed Critical Metallbank und Metallurgische Gesellschaft AG
Priority to GB834321A priority Critical patent/GB177056A/en
Publication of GB177056A publication Critical patent/GB177056A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/14—Separation; Purification; Stabilisation; Use of additives
    • C07C273/16—Separation; Purification

Landscapes

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

Abstract

Urea solutions are evaporated and dried by spraying the solution into contact with a warm gaseous drying medium. The urea solution, preferably previously concentrated in vacuo, is distributed horizontally in the form of mist into a current of gaseous drying medium, which is so directed as not to disturb the horizontal flow of the mist. The horizontal distribution, and disintegration into mist, may be effected by dropping the liquid on to a disc revolving at high speed. Almost completely dehydrated urea is obtained, in granular form, without loss of nitrogen.
GB834321A 1921-03-17 1921-03-17 Method for the evaporation, concentration and drying of solutions of urea Expired GB177056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB834321A GB177056A (en) 1921-03-17 1921-03-17 Method for the evaporation, concentration and drying of solutions of urea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB834321A GB177056A (en) 1921-03-17 1921-03-17 Method for the evaporation, concentration and drying of solutions of urea

Publications (1)

Publication Number Publication Date
GB177056A true GB177056A (en) 1922-03-23

Family

ID=9850709

Family Applications (1)

Application Number Title Priority Date Filing Date
GB834321A Expired GB177056A (en) 1921-03-17 1921-03-17 Method for the evaporation, concentration and drying of solutions of urea

Country Status (1)

Country Link
GB (1) GB177056A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171770A (en) * 1956-10-26 1965-03-02 Stamicarbon Process for the production of substantially anhydrous and substantially biuret-free urea
WO2019043247A1 (en) 2017-09-04 2019-03-07 Plastic Omnium Advanced Innovation And Research Method and device for increasing the urea concentration of a urea solution on board of a vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171770A (en) * 1956-10-26 1965-03-02 Stamicarbon Process for the production of substantially anhydrous and substantially biuret-free urea
WO2019043247A1 (en) 2017-09-04 2019-03-07 Plastic Omnium Advanced Innovation And Research Method and device for increasing the urea concentration of a urea solution on board of a vehicle

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