专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

MY158224A PURIFICATION OF ACETIC ACID FROM WOOD ACETYLATION PROCESS USING EXTRACTION 未知
公开(公告)号：MY158224A
公开(公告)日：2016-09-15
申请号：MYPI2010004791
申请日：2009-02-27
申请人： CELANESE INT CORP
发明人： WARNER R JAY , MEILCHEN MELCHIOR A
IPC分类号： C07C51/48 , B27K3/36 , C07C53/08
摘要： THERE IS SHOWN A METHOD OF PURIFYING GLACIAL ACETIC ACID CONTAINING TERPENE AND TERPENOID IMPURITIES. SUBSTANTIALLY DRY ACETIC ACID CONTAINING TERPENE AND TERPENOID IMPURITIES IS COMBINED WITH WATER AND A SUITABLE ORGANIC SOLVENT, WHICH IS SUBSTANTIALLY IMMISCIBLE WITH ACETIC ACID AND WATER, TO FORM A SEPARATING COMPOSITE EXTRACTION MEDIUM HAVING A WEIGHT RATIO OF ACETIC ACID : WATER OF AT LEAST 1:1. THE COMPONENTS ARE SEPARATED INTO AN ORGANIC PHASE AND AN AQUEOUS ACID PHASE, WITH THE TERPENE AND TERPENOID IMPURITIES CONCENTRATED IN THE ORGANIC PHASE, AND WITH THE AQUEOUS ACID PHASE PURIFIED OF TERPENE AND TERPENOID IMPURITIES.THE PURIFIED AQUEOUS ACID PHASE IS RECOVERED, AND THE PURIFIED ACETIC ACID IS DRIED.

2. 发明专利

CA2267887C REMOVAL OF PERMANGANATE REDUCING COMPOUNDS AND ALKYL IODIDESFROM A CARBONYLATION PROCESS STREAM 未知
公开(公告)号：CA2267887C
公开(公告)日：2007-01-09
申请号：CA2267887
申请日：1997-10-17
申请人： CELANESE INT CORP
发明人： TANKE ROBIN S , VOGEL RICHARD F JR , TORRENCE G PAULL , MEILCHEN MELCHIOR A , KARNILAW MICHAEL L , WARNER R JAY , SCATES MARK O , SANTILLAN VALERIE , SINGH MADAN , PICARD WAYNE D , BLAY GEORGE A
IPC分类号： B01J27/32 , C07C51/44 , B01J38/00 , C07C51/00 , C07C51/12 , C07C51/48 , C07C53/08 , C08G2/12 , C08G2/28
摘要： Disclosed is a method to manufacture high purity acetic acid. Although described in relation to that produced by a low water carbonylation process the present invention is applicable to other mechanism s for production of acetic acid which results in formation of permanganate reducing compounds such as acetaldehyde, propionic acid, and alkyl iodide impurities in intermediate process streams. It has been found that permanganate reducing compounds and alkyl iodides may be conveniently removed from a light phase of an intermediate stream in the reaction process by employing a multiple distillation process coupled with an optional extraction of acetaldehyde. The distillation process involves first distilling a light phase to concentrate the permanganate reducing compounds, and in particular the acetaldehyde, and then separating the permanganate reducing compounds and alkyl iodides in a second distillation tower. The second distillation serves to remove the permanganate reducing compounds and alkyl iodides from methyl iodide, methyl acetate, and methanol mixture. As an optional third step, the twice distilled stream may be direct ed to an extractor to remove any remaining quantities of methyl iodide from the aqueous acetaldehyde stream to obtain acetic acid as a final product in greater than 99% purity.

3. 发明专利

DK0934243T3 未知
公开(公告)号：DK0934243T3
公开(公告)日：2003-12-15
申请号：DK97912748
申请日：1997-10-17
申请人： CELANESE INT CORP
发明人： SINGH MADAN , BLAY GEORGE A , KARNILAW MICHAEL L , MEILCHEN MELCHIOR A , PICARD WAYNE DAVID , SANTILLAN VALERIE , SCATES MARK O , TANKE ROBIN SUZANNE , TORRENCE G PAULL , VOGEL RICHARD F JR , WARNER R JAY
IPC分类号： B01J27/32 , B01J38/00 , C07C51/00 , C07C51/12 , C07C51/44 , C07C51/48 , C07C53/08 , C08G2/12 , C08G2/28
摘要： Disclosed is a method to manufacture high purity acetic acid. Although described in relation to that produced by a low water carbonylation process the present invention is applicable to other mechanisms for production of acetic acid which results in formation of permanganate reducing compounds such as acetaldehyde, propionic acid, and alkyl iodide impurities in intermediate process streams. It has been found that permanganate reducing compounds and alkyl iodides may be conveniently removed from a light phase of an intermediate stream in the reaction process by employing a multiple distillation process coupled with an optional extraction of acetaldehyde. The distillation process involves first distilling a light phase to concentrate the permanganate reducing compounds, and in particular the acetaldehyde, and then separating the permanganate reducing compounds and alkyl iodides in a second distillation tower. The second distillation serves to remove the permanganate reducing compounds and alkyl iodides from methyl iodide, methyl acetate, and methanol mixture. As an optional third step, the twice distilled stream may be directed to an extractor to remove any remaining quantities of methyl iodide from the aqueous acetaldehyde stream to obtain acetic acid as a final product in greater than 99% purity. It has been found that this process removes at least 50% of the permanganate reducing compounds and alkyl iodides and at least 20% of the propionic acid impurity from the intermediate light phase stream, and results in lower alkyl iodide concentration in the carbonylation reaction process, and in particular in the carbonylation reactor. It has also been found that during shut down of the inventive process, polymers of acetaldehyde tend to form in the base of the second distillation tower. To avoid or minimize the formation of these polymers, a constant flow of solvent is passed through the base of the column.

5. 发明专利

CA2714953A1 PURIFICATION OF ACETIC ACID FROM WOOD ACETYLATION PROCESS 未知
公开(公告)号：CA2714953A1
公开(公告)日：2009-10-01
申请号：CA2714953
申请日：2009-02-27
申请人： CELANESE INT CORP
发明人： WARNER R JAY , MEILCHEN MELCHIOR A , STREB MICHAEL O , POWELL NATHAN K , SOELLNER ROLF
IPC分类号： C07C51/46 , B27K3/02 , B27K3/36 , C07C53/08
摘要： A method of purifying acetic acid containing terpene and terpenoid impurities, includes: (a) supplying acetic acid containing terpene or terpenoid impurities and water to a distillation column; (b) azeotropically removing terpene or terpenoid impurities from the mixture of acetic acid and water supplied to the column as distillate; and (c) withdrawing a product stream from the column comprising acetic acid purified of terpene or terpenoid impurities. The method is particularly effective for purifying acetic acid recovered from a wood purification process.

6. 发明专利

AU2009229418A1 Purification of acetic acid from wood acetylation process 未知
公开(公告)号：AU2009229418A1
公开(公告)日：2009-10-01
申请号：AU2009229418
申请日：2009-02-27
申请人： CELANESE INT CORP
发明人： STREB MICHAEL O , SOELLNER ROLF , POWELL NATHAN K , MEILCHEN MELCHIOR A , WARNER R JAY
IPC分类号： C07C51/46 , B27K3/02 , B27K3/36 , C07C53/08
摘要： A method of purifying acetic acid containing terpene and terpenoid impurities, includes: (a) supplying acetic acid containing terpene or terpenoid impurities and water to a distillation column; (b) azeotropically removing terpene or terpenoid impurities from the mixture of acetic acid and water supplied to the column as distillate; and (c) withdrawing a product stream from the column comprising acetic acid purified of terpene or terpenoid impurities. The method is particularly effective for purifying acetic acid recovered from a wood purification process.

7. 发明专利

CZ299598B6 Zpusob odstranení látek redukujících manganistan a alkyljodidu 未知
公开(公告)号：CZ299598B6
公开(公告)日：2008-09-17
申请号：CZ137599
申请日：1997-10-17
申请人： CELANESE INT CORP
发明人： SINGH MADAN , BLAY GEORGE A , KARNILAW MICHAEL L , MEILCHEN MELCHIOR A , PICARD WAYNE D , SANTILLAN VALERIE , SCATES MARK O , TANKE ROBIN S , TORRENCE PAULL G , VOGEL RICHARD F , WARNER JAY R
IPC分类号： B01J27/32 , C07C51/00 , B01J38/00 , C07C51/12 , C07C51/42 , C07C51/44 , C07C51/48 , C07C53/08 , C08G2/12 , C08G2/28
摘要： Rešení spocívá ve zpusobu výroby kyseliny octové s cistotou až 99 % i vyšší pri výrobe karbonylací s nízkým obsahem vody v reakcní smesi, pri níž obvykle dochází k tvorbe látek redukujících manganistan, jako acetyldehydu, kyseliny propionové a alkyjodidu, pri nemž dojde k odstranení techto nežádoucích vedlejších produktu z lehké fáze produktu pri použití opakované destilace, spojené s prípadnou extrakcí acetaldehydu. Tímto zpusobem je také možnozabránit polymeraci acetaldehydu v destilacních kolonách, a tak vyloucit zanášení, zejména pri vypínání kolon.

8. 发明专利

PL189501B1 REMOVAL OF PERMANGANATE REDUCING COMPOUNDS AND ALKYL IODIDES FROM A STREAM OF PRODUCT IN ALKYLATION PROCESSES 未知
公开(公告)号：PL189501B1
公开(公告)日：2005-08-31
申请号：PL33286897
申请日：1997-10-17
申请人： CELANESE INT CORP
发明人： SINGH MADAN , BLAY GEORGE A , KARNILAW MICHAEL L , MEILCHEN MELCHIOR A , PICARD WAYNE DAVID , SANTILLAN VALERIE , SCATES MARK O , TANKE ROBIN SUZANNE , TORRENCE G PAULL , VOGEL JR RICHARD F , WARNER R JAY
IPC分类号： B01J27/32 , B01J38/00 , C07C51/00 , C07C51/12 , C07C51/44 , C07C51/48 , C07C53/08 , C08G2/12 , C08G2/28
摘要： Disclosed is a method to manufacture high purity acetic acid. Although described in relation to that produced by a low water carbonylation process the present invention is applicable to other mechanisms for production of acetic acid which results in formation of permanganate reducing compounds such as acetaldehyde, propionic acid, and alkyl iodide impurities in intermediate process streams. It has been found that permanganate reducing compounds and alkyl iodides may be conveniently removed from a light phase of an intermediate stream in the reaction process by employing a multiple distillation process coupled with an optional extraction of acetaldehyde. The distillation process involves first distilling a light phase to concentrate the permanganate reducing compounds, and in particular the acetaldehyde, and then separating the permanganate reducing compounds and alkyl iodides in a second distillation tower. The second distillation serves to remove the permanganate reducing compounds and alkyl iodides from methyl iodide, methyl acetate, and methanol mixture. As an optional third step, the twice distilled stream may be directed to an extractor to remove any remaining quantities of methyl iodide from the aqueous acetaldehyde stream to obtain acetic acid as a final product in greater than 99% purity. It has been found that this process removes at least 50% of the permanganate reducing compounds and alkyl iodides and at least 20% of the propionic acid impurity from the intermediate light phase stream, and results in lower alkyl iodide concentration in the carbonylation reaction process, and in particular in the carbonylation reactor. It has also been found that during shut down of the inventive process, polymers of acetaldehyde tend to form in the base of the second distillation tower. To avoid or minimize the formation of these polymers, a constant flow of solvent is passed through the base of the column.

9. 发明专利

AT247620T 未知
公开(公告)号：AT247620T
公开(公告)日：2003-09-15
申请号：AT97912748
申请日：1997-10-17
申请人： CELANESE INT CORP
发明人： SINGH MADAN , BLAY GEORGE A , KARNILAW MICHAEL L , MEILCHEN MELCHIOR A , PICARD WAYNE DAVID , SANTILLAN VALERIE , SCATES MARK O , TANKE ROBIN SUZANNE , TORRENCE G PAULL , VOGEL RICHARD F JR , WARNER R JAY
IPC分类号： B01J27/32 , B01J38/00 , C07C51/00 , C07C51/12 , C07C51/44 , C07C51/48 , C07C53/08 , C08G2/12 , C08G2/28
摘要： Disclosed is a method to manufacture high purity acetic acid. Although described in relation to that produced by a low water carbonylation process the present invention is applicable to other mechanisms for production of acetic acid which results in formation of permanganate reducing compounds such as acetaldehyde, propionic acid, and alkyl iodide impurities in intermediate process streams. It has been found that permanganate reducing compounds and alkyl iodides may be conveniently removed from a light phase of an intermediate stream in the reaction process by employing a multiple distillation process coupled with an optional extraction of acetaldehyde. The distillation process involves first distilling a light phase to concentrate the permanganate reducing compounds, and in particular the acetaldehyde, and then separating the permanganate reducing compounds and alkyl iodides in a second distillation tower. The second distillation serves to remove the permanganate reducing compounds and alkyl iodides from methyl iodide, methyl acetate, and methanol mixture. As an optional third step, the twice distilled stream may be directed to an extractor to remove any remaining quantities of methyl iodide from the aqueous acetaldehyde stream to obtain acetic acid as a final product in greater than 99% purity. It has been found that this process removes at least 50% of the permanganate reducing compounds and alkyl iodides and at least 20% of the propionic acid impurity from the intermediate light phase stream, and results in lower alkyl iodide concentration in the carbonylation reaction process, and in particular in the carbonylation reactor. It has also been found that during shut down of the inventive process, polymers of acetaldehyde tend to form in the base of the second distillation tower. To avoid or minimize the formation of these polymers, a constant flow of solvent is passed through the base of the column.

10. 发明专利

NZ334936A Acetic acid recovery system used for the iodide-promoted rhodium catalysed carbonylation of methanol to acetic acid 未知
公开(公告)号：NZ334936A
公开(公告)日：2000-10-27
申请号：NZ33493697
申请日：1997-10-17
申请人： CELANESE INT CORP
发明人： SINGH MADAN , BLAY GEORGE A , KARNILAW MICHAEL L , MEILCHEN MELCHIOR A , PICARD WAYNE DAVID , SANTILLAN VALERIE , SCATES MARK O , TANKE ROBIN SUZANNE , TORRENCE G PAULL , VOGEL RICHARD F , WARNER R JAY
IPC分类号： B01J27/32 , B01J38/00 , C07C51/00 , C07C51/12 , C07C51/44 , C07C51/48 , C07C53/08 , C08G2/12 , C08G2/28 , B01D3/02
摘要： A process for reduction and/or removal of permanganate reducing compounds (PRC's) and C2-12alkyl iodide compounds formed in the carbonylation of methanol to a product of acetic acid, wherein said methanol is carbonylated in a suitable liquid phase reaction medium comprising a Group VIII metal catalyst, an organic iodide and iodide salt catalyst promoter; the products of carbonylation are separated into a volatile phase comprising product, and a less volatile phase comprising Group VIII metal catalyst, acetic acid, and iodide catalyst promoter; the product phase distilled in a distillation tower to yield a purified product and an overhead comprising organic iodide, methyl acetate, water, acetic acid, and unreacted methanol, directing at least a portion of the overhead to an overhead receiver decanter which separates the overhead into a light phase, comprising acetic acid and water, and a heavy phase comprising methyl acetate and organic iodide; and recycling the heavy phase to the carbonylation reactor, comprising the steps of: (a) Directing the light phase comprising acetic acid and water to a distiller which separates the mixture into two streams: residue stream comprising water and acetic acid and overhead stream comprising methyl iodide, methyl acetate, methanol, C2-12alkyl iodides, and PRC's; (b) Circulating the residue stream of step (a) to a heat exchanger and ultimately back to the reactor, and the overhead stream of step (a) to a second distiller which serves to strip the PRC's from the mixture. (c) Optionally forwarding the overhead stream containing PRC's of step (b) to an extractor to remove organic iodide compounds thereform; and, (d) Separating out concentrated PRC's for disposal and returning the organic iodide phase of (b) or (c) as a stream containing a lower percentage of PRC's and C2-12alkyl iodides to the carbonylation reactor. Figure 1 illustrates the removal of carbonyl impurities from the intermediate stream of the carbonylation process. Stream 28, comprising PRC's is directed to an overhead receiver decanter 16 where the light ends phase, stream 30, is directed to distillation column 18. The first vapour phase acetic acid stream (28) comprises methyl iodide, methyl acetate, acetaldehyde and other carbonyl components. This stream is then condensed and separated (in vessel 16) to form a first vapour phase stream to separate the heavy phase product containing the larger proportion of catalytic components - which is re-circulated to the reactor, and a light phase (30) comprising acetaldehyde, water, and acetic acid. This light phase is subsequently distilled twice to remove the PRC's and primarily the acetaldehyde component of the stream. The light phase (30) is directed to column 18, which serves to form a second vapour phase (36) enriched in aldehydes and alkyl iodides with respect to stream 28. Steam 36 is condensed (vessel 20) and bi-phasically separated to form a second heavy liquid phase product and a second light phase liquid product. This second heavy liquid phase contains a higher proportion of catalytic components than the second light liquid phase and is subsequently re-circulated to the reactor. The second liquid light phase (40) comprising acetaldehyde, methyl iodide, methanol, and methyl acetate is directed to a second distillation column (22) wherein the acetaldehyde is separated from the other components.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式