BE572482A - - Google Patents
Info
- Publication number
- BE572482A BE572482A BE572482DA BE572482A BE 572482 A BE572482 A BE 572482A BE 572482D A BE572482D A BE 572482DA BE 572482 A BE572482 A BE 572482A
- Authority
- BE
- Belgium
- Prior art keywords
- formaldehyde
- urea
- solution
- absorption
- stage
- Prior art date
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 191
- 239000000243 solution Substances 0.000 claims description 100
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 57
- 239000004202 carbamide Substances 0.000 claims description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 239000007789 gas Substances 0.000 claims description 39
- 238000010521 absorption reaction Methods 0.000 claims description 29
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 9
- 239000012467 final product Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- VGGLHLAESQEWCR-UHFFFAOYSA-N N-(hydroxymethyl)urea Chemical compound NC(=O)NCO VGGLHLAESQEWCR-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000007859 condensation product Substances 0.000 description 4
- 239000008098 formaldehyde solution Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 3
- 229930040373 Paraformaldehyde Natural products 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- 239000004312 hexamethylene tetramine Substances 0.000 description 3
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 3
- 229960004011 methenamine Drugs 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002866 paraformaldehyde Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
- C08G12/12—Ureas; Thioureas
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C27/00—Processes involving the simultaneous production of more than one class of oxygen-containing compounds
- C07C27/20—Processes involving the simultaneous production of more than one class of oxygen-containing compounds by oxo-reaction
- C07C27/22—Processes involving the simultaneous production of more than one class of oxygen-containing compounds by oxo-reaction with the use of catalysts which are specific for this process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE572482A true BE572482A (enrdf_load_stackoverflow) |
Family
ID=190272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE572482D BE572482A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE572482A (enrdf_load_stackoverflow) |
-
0
- BE BE572482D patent/BE572482A/fr unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2490224A1 (fr) | Procede de synthese de l'uree | |
| EP0751110B1 (fr) | Procédé de purification d'un flux gazeux contenant de l'acroléine | |
| FR2461682A1 (fr) | Separation de l'ammoniac des gaz en contenant | |
| BE572482A (enrdf_load_stackoverflow) | ||
| FR2514759A1 (fr) | Procede de synthese de l'uree par reaction de l'ammoniac et de bioxyde de carbone | |
| EP0180704B1 (fr) | Procédé perfectionné pour la production de l'urée | |
| FR2575742A1 (fr) | Procede de post-traitement de l'eau distillee, par dissolution de calcium et de dioxyde de carbone dans l'eau distillee obtenue dans une installation de dessalement par evaporation | |
| FR2489820A1 (fr) | Procede de synthese de l'uree | |
| FR2543543A1 (fr) | Procede de decomposition par deshydratation pour la preparation d'un compose de carbonyle | |
| BE1013065A4 (fr) | Procede de preparation de fluorure de sodium. | |
| EP0070756B1 (fr) | Procédé de production de froid et/ou de chaleur mettant en oeuvre un cycle à absorption utilisant le dioxyde de carbone comme fluide de travail | |
| FR2795064A1 (fr) | Procede pour recueillir du brome | |
| CA1288380C (fr) | Procede pour concentrer des solutions aqueuses diluees d'oxyde d'ethylene | |
| EP0723038A1 (fr) | Procédé et dispositif de régénération d'une solution usagée de décapage d'éléments en alliage de zirconium | |
| FR1273180A (fr) | Procédé d'affinage en continu des gaz d'échappement résultant de la fabrication de la cyanamide blanche | |
| BE432460A (fr) | Procédé et dispositif pour la production d'urée | |
| BE634237A (enrdf_load_stackoverflow) | ||
| BE513044A (enrdf_load_stackoverflow) | ||
| BE559304A (enrdf_load_stackoverflow) | ||
| BE432185A (enrdf_load_stackoverflow) | ||
| BE419090A (enrdf_load_stackoverflow) | ||
| BE558757A (enrdf_load_stackoverflow) | ||
| BE445056A (enrdf_load_stackoverflow) | ||
| BE625371A (enrdf_load_stackoverflow) | ||
| BE416813A (enrdf_load_stackoverflow) |