WO2010026412A1 - Process for the purification of methanol by distillation - Google Patents
Process for the purification of methanol by distillation Download PDFInfo
- Publication number
- WO2010026412A1 WO2010026412A1 PCT/GB2009/051086 GB2009051086W WO2010026412A1 WO 2010026412 A1 WO2010026412 A1 WO 2010026412A1 GB 2009051086 W GB2009051086 W GB 2009051086W WO 2010026412 A1 WO2010026412 A1 WO 2010026412A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- methanol
- distillation
- alkali
- fusel oil
- crude
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
- C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
Definitions
- the present invention relates to a process for the purification of a crude methanol steam by distillation.
- it relates to an improved process for removing fasel oil from the crude methanol steam.
- the present invention relates to a process for producing methanol.
- Methanol is conventionally produced from synthesis gas which comprises hydrogen, carbon monoxide and carbon dioxide as the main components. These gases are reacted in the presence of a suitable catalyst at suitable temperatures and pressures for the production of methanol.
- the catalyst may be a copper-containing catalyst and suitable temperatures are from about 200 0 C to about 300 c C and suitable pressures include those of from about 50 to about 150 atm.
- the reaction is usually carried out in the presence of a large quantity of steam. Water is formed as a by-product of the reaction.
- the crude product in liquid form is then usually subjected to distillation to separate the methanol from the water and by-products.
- the byproducts include those having a higher boiling point that methanol.
- fusel oil is produced as a by-product in the reaction.
- Fusel oil also known as fusel alcohol, is a mixture of alcohols having more than two carbon atoms.
- fusel oil will include 1-propanol, 2-propanol, various isomers of butanol, amyl alcohol and furfural.
- the distillation column includes a side draw as a purge taken near to the bottom of the column. ⁇ /hich is generally a low pressure distillation column, used to separate the water and methanol. This side draw, which will include water and methanol, removes the fasel oil as a liquid.
- an alkali generally sodium hydroxide
- the alkali is added for a number of reasons. The main benefit it provides is to reduce corrosion rates so that carbon steel can be used in the distillation section of the plant.
- the alkali such as sodium hydroxide reacts with the low concentrations of organic acids which may be present in the crude methanol, trapping the acids in the liquid water and thereby reducing the concentration of the acids in the desired product methanol
- the alkali stays dissolved in the liquid water and so is present in both the water removed from the bottom of the column and also in the fusel oil.
- the fusel oil Once the fusel oil has been removed in a side draw, it will generally be fed to a saturator which is a packed column. Natural gas is passed up the saturator column which picks up steam from circulating hot water and, in a section located near to the top of the column picks up the organics from the fosel oil.
- a saturator column it is not desirable to include a saturator column in many setups not least because of the increase in capital and running costs.
- alkali such as sodium hydroxide
- fusel oil containing the alkali, such as sodium hydroxide cannot be recycled directly to the methanol generation portion of the plant.
- residual effluent contaminated with alkali and organic compounds can present problems of disposal
- vapour side draw from a point below the feed The benefit of taking the vapour side draw from a point below the feed is that it will be free of substantially free of alkali.
- the vapour once removed may be condensed and the liquid fusel oil recovered and where appropriate recycled to the methanol production reactor.
- the alkali, being substantially non-volatile is retained in the liquid phase and therefore can only move downwardly in the column from the feed point.
- the alkali is sodium hydroxide.
- the process of the present invention does not require the use of expensive materials in the production of the plant nor is there a requirement for a separate stripper or saturator to separate the fusel oil from the alkali.
- the removal of the fusel oil as a vapour side draw can be carried out by any suitable means.
- the means for taking a vapour side draw in a distillation column are well known from other distillation schemes.
- the means utilised to remove the vapour side draw will be one which includes means for eliminating or minimising the withdrawal of liquid droplets entrained in the vapour.
- the apparatus will be designed to include a mist eliminator. These arrangements are well known to the skilled man.
- step (g) recovering fusel oil as a vapour side draw.
- the fasel oil recovered in step (g) is condensed and liquid fasel oil recycled to step (a).
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801311325A CN102119136A (en) | 2008-09-04 | 2009-08-28 | Process for the purification of methanol by distillation |
BRPI0919188A BRPI0919188A2 (en) | 2008-09-04 | 2009-08-28 | process for the purification of methanol by distillation. |
US13/061,917 US20110214981A1 (en) | 2008-09-04 | 2009-08-28 | Process For The Purification Of Methanol By Distillation |
EP09785547A EP2318345A1 (en) | 2008-09-04 | 2009-08-28 | Process for the purification of methanol by distillation |
AU2009289003A AU2009289003A1 (en) | 2008-09-04 | 2009-08-28 | Process for the purification of methanol by distillation |
EA201100372A EA201100372A1 (en) | 2008-09-04 | 2009-08-28 | METHOD OF CLEANING METHANOL BY DISTILLATION |
ZA2011/00752A ZA201100752B (en) | 2008-09-04 | 2011-01-28 | Process for the purification of methanol by distillation |
EG2011030347A EG26476A (en) | 2008-09-04 | 2011-03-03 | Process for the purifiction of methanol by distillation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0816095.4A GB0816095D0 (en) | 2008-09-04 | 2008-09-04 | Process |
GB0816095.4 | 2008-09-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010026412A1 true WO2010026412A1 (en) | 2010-03-11 |
Family
ID=39888744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2009/051086 WO2010026412A1 (en) | 2008-09-04 | 2009-08-28 | Process for the purification of methanol by distillation |
Country Status (10)
Country | Link |
---|---|
US (1) | US20110214981A1 (en) |
EP (1) | EP2318345A1 (en) |
CN (1) | CN102119136A (en) |
AU (1) | AU2009289003A1 (en) |
BR (1) | BRPI0919188A2 (en) |
EA (1) | EA201100372A1 (en) |
EG (1) | EG26476A (en) |
GB (1) | GB0816095D0 (en) |
WO (1) | WO2010026412A1 (en) |
ZA (1) | ZA201100752B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020178684A1 (en) * | 2019-03-07 | 2020-09-10 | Sabic Global Technologies B.V. | Systems and methods for producing methanol with recycling of fusel oil |
US11697629B2 (en) * | 2017-08-23 | 2023-07-11 | Sabic Global Technologies B.V. | System and process for methanol recovery |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2617479A1 (en) * | 2012-01-23 | 2013-07-24 | Methanol Casale SA | Process and plant for distillation of methanol with heat recovery. |
CN109374796A (en) * | 2018-09-20 | 2019-02-22 | 福建中医药大学 | A method of reducing methanol evaporative light scattering detector noise |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4455394A (en) * | 1980-05-20 | 1984-06-19 | Imperial Chemical Industries Limited | Methanol production |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US715119A (en) * | 1902-04-05 | 1902-12-02 | Wonder Plow Company | Plow attachment. |
US3230156A (en) * | 1961-09-08 | 1966-01-18 | Chemical Construction Corp | Purification of synthetic methanol by plural stage distillation |
US3434937A (en) * | 1966-10-06 | 1969-03-25 | Allied Chem | Distillation purification of crude synthetic methanol |
US3406100A (en) * | 1966-12-16 | 1968-10-15 | Chemical Construction Corp | Purification of synthetic methanol by extractive distillation and subsequent distillation with plural side stream purges |
US3391064A (en) * | 1967-08-28 | 1968-07-02 | Du Pont | Methanol refining |
GB1373159A (en) * | 1972-08-29 | 1974-11-06 | Ici Ltd | Methanol |
DE3311316A1 (en) * | 1983-03-29 | 1984-10-11 | Uhde Gmbh, 4600 Dortmund | METHOD FOR PRODUCING METHANOL IN CHEMICAL QUALITY |
JPH082808B2 (en) * | 1988-01-12 | 1996-01-17 | 三菱瓦斯化学株式会社 | Methanol production method |
US5387322A (en) * | 1993-05-14 | 1995-02-07 | The M. W. Kellogg Company | Fusel oil stripping |
CN1086849A (en) * | 1993-09-01 | 1994-05-18 | 王大明 | The distillating method of high grade edible spirit |
US7151198B2 (en) * | 2002-12-30 | 2006-12-19 | Exxonmobil Chemical Patents Inc. | Integration of a methanol synthesis system with a methanol to olefin reaction system |
US7192987B2 (en) * | 2004-03-05 | 2007-03-20 | Exxonmobil Chemical Patents Inc. | Processes for making methanol streams and uses for the streams |
-
2008
- 2008-09-04 GB GBGB0816095.4A patent/GB0816095D0/en not_active Ceased
-
2009
- 2009-08-28 CN CN2009801311325A patent/CN102119136A/en active Pending
- 2009-08-28 BR BRPI0919188A patent/BRPI0919188A2/en not_active IP Right Cessation
- 2009-08-28 EP EP09785547A patent/EP2318345A1/en not_active Withdrawn
- 2009-08-28 EA EA201100372A patent/EA201100372A1/en unknown
- 2009-08-28 AU AU2009289003A patent/AU2009289003A1/en not_active Abandoned
- 2009-08-28 US US13/061,917 patent/US20110214981A1/en not_active Abandoned
- 2009-08-28 WO PCT/GB2009/051086 patent/WO2010026412A1/en active Application Filing
-
2011
- 2011-01-28 ZA ZA2011/00752A patent/ZA201100752B/en unknown
- 2011-03-03 EG EG2011030347A patent/EG26476A/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4455394A (en) * | 1980-05-20 | 1984-06-19 | Imperial Chemical Industries Limited | Methanol production |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11697629B2 (en) * | 2017-08-23 | 2023-07-11 | Sabic Global Technologies B.V. | System and process for methanol recovery |
WO2020178684A1 (en) * | 2019-03-07 | 2020-09-10 | Sabic Global Technologies B.V. | Systems and methods for producing methanol with recycling of fusel oil |
US11820731B2 (en) | 2019-03-07 | 2023-11-21 | Sabic Global Technologies B.V. | Systems and methods for producing methanol with recycling of fusel oil |
Also Published As
Publication number | Publication date |
---|---|
ZA201100752B (en) | 2012-05-01 |
CN102119136A (en) | 2011-07-06 |
AU2009289003A1 (en) | 2010-03-11 |
US20110214981A1 (en) | 2011-09-08 |
BRPI0919188A2 (en) | 2018-01-30 |
EA201100372A1 (en) | 2011-08-30 |
GB0816095D0 (en) | 2008-10-15 |
EG26476A (en) | 2013-12-02 |
EP2318345A1 (en) | 2011-05-11 |
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