GR36579B - METHOD AND INSTALLATION FOR URINE PRODUCTION. - Google Patents

METHOD AND INSTALLATION FOR URINE PRODUCTION.

Info

Publication number
GR36579B
GR36579B GR670136579A GR670136579A GR36579B GR 36579 B GR36579 B GR 36579B GR 670136579 A GR670136579 A GR 670136579A GR 670136579 A GR670136579 A GR 670136579A GR 36579 B GR36579 B GR 36579B
Authority
GR
Greece
Prior art keywords
urea
formation zone
dissolved
ammonium carbamate
solution
Prior art date
Application number
GR670136579A
Other languages
Greek (el)
Original Assignee
Stamicarbon N.V.
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 Stamicarbon N.V. filed Critical Stamicarbon N.V.
Publication of GR36579B publication Critical patent/GR36579B/en

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
    • C07C273/04—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 from carbon dioxide and ammonia
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Abstract

ία συνεχής μέθοδος δια την παραγωγήν ουρίας δι αντιδράσεως NH3 και Co2 υπό συνθήκας υψηλής πιέσεως και θερμοκρασίας προς σχηματισμόν ενός τήγματος καρβαμιδικού αμμωνίου, όπερ ακολούθως μετατρέπεται προς εν διάλυμα ουρίας περιέχον καρβαμιδικόν αμμώνιον και/ή διαλελυμένην ΝΗ3 και CO2, και απογυμνώσεως του ρηθέντος διαλύματος ουρίας μετά ΝΗ3 και/ή CO2 και ανακυκλοφορίας των αφαιρεθέντων ΝΗ3 και CO2 εις την ζώνην σχηματισμού καρβαμιδικού αμμωνίου ή εις την ζώνην σχηματισμού ουρίας μεθ ό, εάν επιθυμούμεν, το προκύπτον διάλυμα ουρίας αφήνεται να εκτονωθεί προς μίαν χαμηλήν πίεσιν προς επίτευξιν περαιτέρω απομακρύνσεως διαλελυμένων εισέτι ΝΗ3 και CO2, άτινα μετά ταύτα απορροφώνται εντός ύδατος καιτο ούτω λαμβανόμενον διάλυμα αφήνεται να επανακυκλοφορήσει εις την ζώνην σχηματισμού καρβαμιδικού άλατος ή ουρίας, και το απογυμνωθέν εκ της διαλελυμένης αμμωνίας και CO2 διάλυμα ουρίας μετάγεται διαπεραιτέρω κατεργασίαν, οπότε εις την ρηθείσαν μέθοδον ή εισαγωγή του ενός ή αμφοτέρων των συστατικών αντιδράσεως ΝΗ3 και CO3 εις την ζώνην σχηματισμού καρβαμιδικού αμμωνίου ελέγχεται κατά τρόπον ώστεη γραμμομοριακή αναλογία ΝΗ3/CO2 των υπαρχόντων εις την υγράν φάσιν ΝΗ3 και CO2 ως τοιούτων ή ως ΝΗ3 και CO2 δεσμευμένων κατ άλλον τρόπον ή υπό την μορφήν ουρίας ή διουρίας, να τηρείται εις μίαν τιμήν από 2 : 1 έως 3 : 1 και η ρηθείσα αναλογία εις την ζώνην σχηματισμού ουρίας να τηρείται εις μίαν τιμήν από 3 : 1 έως 6 : 1.A continuous process for the production of urea by reaction of NH3 and Co2 under high pressure and temperature conditions to form an ammonium carbamate melt, then converted to a urea solution containing ammonium carbamate and / or dissolved NH3 and CO2, and dissolved NH3 and / or CO2 and recirculate the removed NH3 and CO2 to the ammonium carbamate formation zone or to the urea formation zone where, if desired, the resulting urea solution is allowed to expand to a low pressure to achieve further removal of N2 and are then absorbed into water and the solution thus obtained is allowed to recirculate to the carbamate or urea formation zone, and the solution dissolved in the dissolved ammonia and CO2 urea is then transferred to a further treatment or treatment. ingredients a of NH3 and CO3 in the ammonium carbamate formation zone is controlled so that the NH3 / CO2 molar ratio of the NH3 and CO2 present in the liquid phase as such or as NH3 and CO2 otherwise bound or in the form of urea or diurea is a value from 2: 1 to 3: 1 and the said ratio in the urea formation zone to be kept at a value from 3: 1 to 6: 1.

GR670136579A 1966-04-22 1967-04-23 METHOD AND INSTALLATION FOR URINE PRODUCTION. GR36579B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL666605483A NL148878B (en) 1966-04-22 1966-04-22 PROCEDURE FOR THE CONTINUOUS PREPARATION OF UREA.

Publications (1)

Publication Number Publication Date
GR36579B true GR36579B (en) 1969-02-21

Family

ID=19796380

Family Applications (1)

Application Number Title Priority Date Filing Date
GR670136579A GR36579B (en) 1966-04-22 1967-04-23 METHOD AND INSTALLATION FOR URINE PRODUCTION.

Country Status (15)

Country Link
JP (1) JPS4925253B1 (en)
AT (1) AT273152B (en)
BE (1) BE697348A (en)
CH (1) CH487854A (en)
CS (1) CS157019B2 (en)
DE (1) DE1643065B2 (en)
DK (1) DK116865B (en)
ES (1) ES339600A1 (en)
FI (1) FI46064C (en)
GB (1) GB1160030A (en)
GR (1) GR36579B (en)
IL (1) IL27801A (en)
NL (1) NL148878B (en)
NO (1) NO123524B (en)
OA (1) OA02416A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PH12569A (en) * 1970-09-03 1979-06-20 Snam Progetti Process for producing urea
JPS531967U (en) * 1976-06-24 1978-01-10

Also Published As

Publication number Publication date
JPS4925253B1 (en) 1974-06-28
IL27801A (en) 1970-08-19
CH487854A (en) 1970-03-31
DK116865B (en) 1970-02-23
OA02416A (en) 1970-05-05
NL148878B (en) 1976-03-15
FI46064C (en) 1972-12-11
ES339600A1 (en) 1968-07-16
FI46064B (en) 1972-08-31
BE697348A (en) 1967-10-02
CS157019B2 (en) 1974-08-23
DE1643065B2 (en) 1976-01-02
AT273152B (en) 1969-08-11
NO123524B (en) 1971-12-06
GB1160030A (en) 1969-07-30
NL6605483A (en) 1967-10-23
DE1643065A1 (en) 1971-04-15

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