WO1990013532A1 - Procedimiento para la fabricacion de soluciones estabilizadas de formaldehido con metanol - Google Patents
Procedimiento para la fabricacion de soluciones estabilizadas de formaldehido con metanol Download PDFInfo
- Publication number
- WO1990013532A1 WO1990013532A1 PCT/ES1990/000015 ES9000015W WO9013532A1 WO 1990013532 A1 WO1990013532 A1 WO 1990013532A1 ES 9000015 W ES9000015 W ES 9000015W WO 9013532 A1 WO9013532 A1 WO 9013532A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- methanol
- formaldehyde
- liquid mixture
- base
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/37—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of >C—O—functional groups to >C=O groups
- C07C45/38—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of >C—O—functional groups to >C=O groups being a primary hydroxyl group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/85—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification
Definitions
- the present invention relates to a process for manufacturing stabilized solutions of formaldehyde with rnetanol.
- the process described in the cited patent is characterized by the combination of the following steps: a) methanol is catalytically oxidized by air; b) the gases that come from the catalytic oxidation of the metal are condensed1, c) the condensed products are separated from the non-condensed gases, d) the non-condensed gases are cooled and washed in a washing column by means of a solution of polymerized and cold formaldehyde that retains methane and fo fonaldehyde or that they contain, e) the solution obtained in step c) is distilled so that a concentrated aqueous solution of formaldehyde and methanol is recovered separately,) the solution obtained in step d) is distilled so that methanol is recovered and the form is fixed ⁇ maldehyde, g) a part of the formaldehyde solution obtained in step f) is combined with the condensed and distilled product obtained in step e), h) the concentrated aqueous formal
- atmospheric air is aspirated at a pressure of 760 m of mercury by means of a suitable supercharger; the air is constantly driven to a saturator and inside it, the air bubbles in methanol, which is maintained at 50.5 5 C by means of a heating device.
- methanol accesses the saturator from a tank, from which it flows at a constant flow thanks to adequate regulation by means of a valve.
- the mixture leaving the saturator, with a constant flow rate of methanol, is passed on a catalyst based on metallic silver, maintained at a temperature of around 500 2 C so that it transforms, according to a Conventional reaction, approximately 60% of methanol in formaldehyde, freeing the corresponding hydrogen, of which a part is oxidized in water by the oxygen of the air. A small amount of carbon dioxide is formed at the same time and practically all the oxygen in the air is transformed in the course of the reaction.
- the gaseous mixture that comes from the catalyst is then penetrated into the base Le a scrubber, which receives in the head the condensation products extracted in the base of the scrubber, put into circulation by means of a pump and cooled by a cooler
- the mixture cited in the preceding paragraph constitutes the starting material for the manufacture of said stabilized solutions of formaldehyde with rnetanol.
- this mixture is referred to with the designation: mixture from the base of the scrubber.
- the present process is characterized in that the starting material is a liquid mixture comprising a proportion of formaldehyde comprised between 48 and 55% by weight, a proportion of ethanol comprised between 20 and 30% by weight and a proportion ⁇ tion of water comprised between 32 and 15% by weight, said liquid mixture coming from an outlet made of an installation for the continuous preparation of urea-formaldehyde glues and resins, immediately after having subjected methanol to catalytic oxidation by means of air, to condensation of the gases coming from said catalytic oxidation and to separation between the condensed products and the non-condensed gases.
- the starting material is a liquid mixture comprising a proportion of formaldehyde comprised between 48 and 55% by weight, a proportion of ethanol comprised between 20 and 30% by weight and a proportion ⁇ tion of water comprised between 32 and 15% by weight, said liquid mixture coming from an outlet made of an installation for the continuous preparation of urea-formaldehyde glues and resins, immediately after having
- said to a of said liquid mixture is carried out continuously and the liquid mixture is stabilized by the continuous provision of water and of a base, with intervention of heat coming from the own liquid mixture and cel prior heating of said water.
- the respective flow rates of said continuous contributions represent quantities proportional to the following numbers: from 900 to 1100 for said liquid mixture; 30 to 50 for said hot water and 1 to 2 for said base.
- said liquid mixture has a composition of 50.5% by weight of fo maldehyde and 26.0% by weight of methanol; said base is triethylamine; the flows of the liquid mixture, of hot water and of triethylamine are in an approximate ratio of 1000: 40: 1.4, obtaining a stabilized solution with a composition of 48.5% by weight of formaldehyde and 25.0% methanol.
- said intake of said liquid mixture is carried out in batch and stabilized by incorporating water and a base, the whole being heated at a temperature between 70 2 and 100 9 C for a time between 5 and 30 minutes; more preferably, said outlet of liquid mixture, and said corporations of water and of a base represent magnitudes proportional to the following numbers: from 12,000 to 15,000 for said liquid mixture; 500 to 625 for said water and 15 to 20 for said base.
- said taking of said liquid mixture is carried out continuously and the liquid mixture is stabilized by continuously providing a base, followed by continuous distillation at low pressure, which results, on the one hand, a concentrated product to which methanol is incorporated and, on the other hand, low concentration distillates that eventually pass to a de-alcoholization column where methanol is separated and a solution containing fo ⁇ ualdehyde and preferably the respective flows of said contributions in continuous — they represent quantities proportional to the following numbers: from 900 to 1100 for said liquid mixture and from 1 to 2 for said base, and because said low pressure is comprised between 200 and 300 mmH.
- said lathe of said liquid mixture is carried out continuously and is stabilized by incorporating a base, followed by low pressure distillation, which results, on the one hand, from a concentrated product. to which ethanol is incorporated and, on the other hand, low concentration clearances that eventually pass into a desalcoholization column where methanol is separated and a solution containing formaldehyde, being a preferred feature that said liquid mixture intake and said incorporation of a base represent magnitudes proportional to the following numbers: from 12,000 to 16,000 for said liquid mixture and from 16 to 24 for said base, and because said low pressure is comprised between 160 and 240 r ⁇ mHg.
- a reactor equipped with stirring and heating and cooling system is fed with the mixture of composition 50.5% formaldehyde and 25% methanol from the base of the scrubber.
- the flow rate is 1000 kg / h.
- Stabilization of the product occurs after loading the reactor is complete, and heating to 90 C for 15 minutes. The product is cooled and emptied.
- the concentrated product resulting from distillation is continuously supplied with 179 kg / h methanol to use the product concentration.
- the vacuum is distilled (absolute pressure of 200 mm Hg), after adding 20 kg of triethylamine.
- the distillation is terminated when the formaldehyde concentration is 74% and they have been obtained. had 7,770 kg with an anol content of 12%.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69011644T DE69011644T2 (de) | 1989-05-10 | 1990-05-08 | Verfahren zur herstellung stabilisierter lösungen von formaldehyd mit methanol. |
UA4894491A UA26421A (uk) | 1989-05-10 | 1990-05-08 | Спосіб одержаhhя стабілізоваhих розчиhів формальдегіду, які містять метаhол |
EP90907065A EP0434783B1 (en) | 1989-05-10 | 1990-05-08 | Method for producing stabilized solutions of formaldehyde with methanol |
SU904894491A RU2088566C1 (ru) | 1989-05-10 | 1990-05-08 | Способ получения стабилизированных содержащих метанол растворов формальдегида |
NO910104A NO174418C (no) | 1989-05-10 | 1991-01-09 | Fremgangsmåte til fremstilling av stabiliserte opplösninger av formaldehyd med metanol |
FI910107A FI93829C (fi) | 1989-05-10 | 1991-01-09 | Menetelmä formaldehydin stabiloitujen liuosten valmistamiseksi metanolin kanssa |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES8901591A ES2010959A6 (es) | 1989-05-10 | 1989-05-10 | Procedimiento para la fabricacion de soluciones estabilizadas de formaldehido con metanol. |
ES8901591 | 1989-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990013532A1 true WO1990013532A1 (es) | 1990-11-15 |
Family
ID=8261868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES1990/000015 WO1990013532A1 (es) | 1989-05-10 | 1990-05-08 | Procedimiento para la fabricacion de soluciones estabilizadas de formaldehido con metanol |
Country Status (14)
Country | Link |
---|---|
US (1) | US5171894A (es) |
EP (1) | EP0434783B1 (es) |
JP (1) | JP2824538B2 (es) |
AT (1) | ATE110051T1 (es) |
AU (1) | AU627584B2 (es) |
DE (1) | DE69011644T2 (es) |
DK (1) | DK0434783T3 (es) |
ES (2) | ES2010959A6 (es) |
FI (1) | FI93829C (es) |
MX (1) | MX170958B (es) |
NO (1) | NO174418C (es) |
RU (1) | RU2088566C1 (es) |
UA (1) | UA26421A (es) |
WO (1) | WO1990013532A1 (es) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2201241A1 (de) * | 1972-01-12 | 1973-07-26 | Basf Ag | Verfahren zur herstellung von formaldehyd |
FR2311048A1 (fr) * | 1975-05-13 | 1976-12-10 | Mir Puig Pedro | Procede de preparation de colles ou resines d'uree-formaldehyde et produits obtenus par la mise en oeuvre de ce procede |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3629997A (en) * | 1970-05-08 | 1971-12-28 | Borden Inc | Process for producing methanol-formaldehyde solution of low-water content |
JPS5273811A (en) * | 1975-12-16 | 1977-06-21 | Mitsubishi Gas Chem Co Inc | Formaldehyde composition |
JPS5384910A (en) * | 1976-12-29 | 1978-07-26 | Matsushita Electric Works Ltd | Formaldehyde composition of high concentration |
-
1989
- 1989-05-10 ES ES8901591A patent/ES2010959A6/es not_active Expired
-
1990
- 1990-05-08 RU SU904894491A patent/RU2088566C1/ru active
- 1990-05-08 US US07/613,795 patent/US5171894A/en not_active Expired - Lifetime
- 1990-05-08 ES ES90907065T patent/ES2078967T3/es not_active Expired - Lifetime
- 1990-05-08 AT AT90907065T patent/ATE110051T1/de not_active IP Right Cessation
- 1990-05-08 JP JP2507374A patent/JP2824538B2/ja not_active Expired - Fee Related
- 1990-05-08 AU AU56416/90A patent/AU627584B2/en not_active Ceased
- 1990-05-08 DE DE69011644T patent/DE69011644T2/de not_active Expired - Fee Related
- 1990-05-08 EP EP90907065A patent/EP0434783B1/en not_active Expired - Lifetime
- 1990-05-08 DK DK90907065.8T patent/DK0434783T3/da active
- 1990-05-08 UA UA4894491A patent/UA26421A/uk unknown
- 1990-05-08 WO PCT/ES1990/000015 patent/WO1990013532A1/es active IP Right Grant
- 1990-05-09 MX MX020641A patent/MX170958B/es unknown
-
1991
- 1991-01-09 NO NO910104A patent/NO174418C/no not_active IP Right Cessation
- 1991-01-09 FI FI910107A patent/FI93829C/fi active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2201241A1 (de) * | 1972-01-12 | 1973-07-26 | Basf Ag | Verfahren zur herstellung von formaldehyd |
FR2311048A1 (fr) * | 1975-05-13 | 1976-12-10 | Mir Puig Pedro | Procede de preparation de colles ou resines d'uree-formaldehyde et produits obtenus par la mise en oeuvre de ce procede |
Also Published As
Publication number | Publication date |
---|---|
ES2010959A6 (es) | 1989-12-01 |
FI910107A0 (fi) | 1991-01-09 |
AU627584B2 (en) | 1992-08-27 |
UA26421A (uk) | 1999-08-30 |
EP0434783B1 (en) | 1994-08-17 |
DE69011644D1 (de) | 1994-09-22 |
JPH03506041A (ja) | 1991-12-26 |
DK0434783T3 (da) | 1994-12-12 |
JP2824538B2 (ja) | 1998-11-11 |
RU2088566C1 (ru) | 1997-08-27 |
US5171894A (en) | 1992-12-15 |
EP0434783A1 (en) | 1991-07-03 |
NO174418C (no) | 1994-05-04 |
FI93829C (fi) | 1995-06-12 |
MX170958B (es) | 1993-09-22 |
FI93829B (fi) | 1995-02-28 |
NO910104L (no) | 1991-01-09 |
NO174418B (no) | 1994-01-24 |
ATE110051T1 (de) | 1994-09-15 |
ES2078967T3 (es) | 1996-01-01 |
DE69011644T2 (de) | 1994-12-08 |
AU5641690A (en) | 1990-11-29 |
NO910104D0 (no) | 1991-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4713642B2 (ja) | クメンヒドロペルオキシドの分解 | |
JP4727228B2 (ja) | プソイドイオノンおよびイオノンの連続的製造方法 | |
EA022192B1 (ru) | Высокотемпературная нейтрализация лактама | |
US4020052A (en) | Treatment of aromatic amines with gas mixtures derived from the oxidation of ammonia to effect diazotization/coupling | |
JP2857993B2 (ja) | ホルムアルデヒド水溶液の連続的製造方法 | |
WO1990013532A1 (es) | Procedimiento para la fabricacion de soluciones estabilizadas de formaldehido con metanol | |
US3489515A (en) | Production of high percentage nitric oxide | |
US3914217A (en) | Process for the preparation of lactams | |
EP1556343B1 (en) | Process for the production of 3-methylthiopropanal | |
JP4138659B2 (ja) | シクロヘキサノンオキシムおよびシクロヘキサノンを含む水性媒体を処理する方法 | |
JPH0662478B2 (ja) | ホルムアルデヒド水溶液の製造法 | |
TWI335317B (en) | Continuous process for preparing caprolactam | |
Breitkreuz et al. | Conceptual design of a crystallization-based trioxane production process | |
US3728398A (en) | Preparation of formaldehyde | |
US2181559A (en) | Process for producing a nitrate | |
RU2287517C1 (ru) | Способ получения формалина или карбамидоформальдегидного раствора | |
US6630608B2 (en) | Process for preparing phenols | |
ES2693689T3 (es) | Procedimiento de oxidación de hidrocarburos con oxígeno | |
RU2233263C2 (ru) | Способ получения формалина | |
JP2001354608A (ja) | シクロドデカノン類の製造方法 | |
US2050444A (en) | Method of producing isopropyl alcohol | |
US1956440A (en) | Process for preparing acetaldehyde | |
RU2321577C2 (ru) | Способ получения глиоксальсодержащих продуктов | |
CN113501804A (zh) | 一种新洋茉莉醛的合成方法 | |
US1953381A (en) | Process for the continuous preparation of acetic acid from acetaldehyde |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU FI JP NO SU US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB IT LU NL SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1990907065 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 910107 Country of ref document: FI |
|
WWP | Wipo information: published in national office |
Ref document number: 1990907065 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1990907065 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 910107 Country of ref document: FI |