-
公开(公告)号：US10087140B2
公开(公告)日：2018-10-02
申请号：US15552072
申请日：2015-12-18
IPC分类号： C07C273/14 , C01C1/04 , C01B3/38 , C01B3/48 , C01B3/52 , C01B3/56 , C07C29/15 , C07C45/29 , C07C45/38 , C07C273/10 , C10J3/82 , C01B3/02 , C07C29/151
摘要： A process is described for the production of formaldehyde, comprising (a) subjecting methanol to oxidation with air in a formaldehyde production unit thereby producing a formaldehyde-containing stream; (b) separating said formaldehyde-containing stream into a formaldehyde product stream and a formaldehyde vent gas stream; wherein the vent gas stream, optionally after treatment in a vent gas treatment unit, is passed to one or more stages of: (i) synthesis gas generation, (ii) carbon dioxide removal, (iii) methanol synthesis or (iv) urea synthesis.
-
公开(公告)号：US10457634B2
公开(公告)日：2019-10-29
申请号：US16113859
申请日：2018-08-27
IPC分类号： C07C273/14 , C07C29/151 , C07C273/04 , C07C45/38 , C01B3/38 , C01C1/04 , C01B3/02 , C01B3/48 , C01B3/52 , C01B3/56 , C07C45/29 , C07C273/10 , C10J3/82
摘要： A process is described for the production of formaldehyde, comprising (a) subjecting methanol to oxidation with air in a formaldehyde production unit thereby producing a formaldehyde-containing stream; (b) separating said formaldehyde-containing stream into a formaldehyde product stream and a formaldehyde vent gas stream; wherein the vent gas stream, optionally after treatment in a vent gas treatment unit, is passed to one or more stages of: (i) synthesis gas generation, (ii) carbon dioxide removal, (iii) methanol synthesis or (iv) urea synthesis.
-
公开(公告)号：US20180362453A1
公开(公告)日：2018-12-20
申请号：US16113859
申请日：2018-08-27
IPC分类号： C07C273/14 , C01B3/38 , C10J3/82 , C01C1/04 , C01B3/02 , C07C45/29 , C07C45/38 , C01B3/48 , C01B3/52 , C07C273/10 , C07C273/04 , C07C29/151 , C01B3/56 , C07C31/04 , C07C47/04
摘要： A process is described for the production of formaldehyde, comprising (a) subjecting methanol to oxidation with air in a formaldehyde production unit thereby producing a formaldehyde-containing stream; (b) separating said formaldehyde-containing stream into a formaldehyde product stream and a formaldehyde vent gas stream; wherein the vent gas stream, optionally after treatment in a vent gas treatment unit, is passed to one or more stages of: (i) synthesis gas generation, (ii) carbon dioxide removal, (iii) methanol synthesis or (iv) urea synthesis.
-
公开(公告)号：US10550076B2
公开(公告)日：2020-02-04
申请号：US16062748
申请日：2016-11-28
发明人： Ola Erlandsson , Andreas Erik Johan Magnusson , Kate McFarlane , John David Pach , Daniel Thomas Sheldon , Darren Ward
IPC分类号： C07C273/14 , C01C1/04 , C07C29/151 , C07C45/38 , C01B3/50 , C07C1/20 , C07C45/29 , C07C273/10 , C07C1/04
摘要： A process for producing formaldehyde-stabilised urea is described comprising generating a synthesis gas, subjecting the synthesis gas to water-gas shift to form a shifted gas; recovering carbon dioxide from the shifted gas; synthesising methanol from the carbon dioxide-depleted synthesis gas; subjecting recovered methanol to oxidation; subjecting the methanol synthesis off-gas to methanation; synthesising ammonia from the ammonia synthesis gas and recovering the ammonia; reacting ammonia and recovered carbon dioxide stream to form a urea stream; and stabilising the urea by mixing the urea stream and a stabiliser prepared using the recovered formaldehyde, wherein a portion of the synthesis gas by-passes either the one or more of the water-gas shift reactors, carbon dioxide removal unit, or water-gas shift reactors and the carbon dioxide removal unit used in the process.
-
公开(公告)号：US10077235B2
公开(公告)日：2018-09-18
申请号：US15552063
申请日：2015-12-18
IPC分类号： C07C273/14 , C01B3/48 , C01B3/52 , C01B3/56 , C01C1/04 , C07C273/10 , C07C45/38 , C07C45/29 , C10J3/82 , C07C29/15 , C01B3/02 , C07C29/151
CPC分类号： C07C273/14 , C01B3/025 , C01B3/382 , C01B3/48 , C01B3/52 , C01B3/54 , C01B3/56 , C01B3/586 , C01B2203/0233 , C01B2203/0244 , C01B2203/0283 , C01B2203/0415 , C01B2203/042 , C01B2203/0445 , C01B2203/047 , C01B2203/0475 , C01B2203/06 , C01B2203/061 , C01B2203/062 , C01B2203/068 , C01B2203/1241 , C01B2203/1252 , C01B2203/142 , C01C1/0488 , C07C29/1518 , C07C45/29 , C07C45/38 , C07C273/04 , C07C273/10 , C10J3/82 , C10J2300/0916 , C10J2300/093 , C10J2300/0956 , C10J2300/0976 , C10J2300/1838 , C10J2300/1853 , Y02P20/125 , Y02P20/52 , C07C31/04 , C07C47/04
摘要： The present disclosure relates to an integrated process for the production of formaldehyde-stabilized urea, starting with producing synthesis gas and including the preparation of methanol, ammonia, urea, and formaldehyde in amounts appropriate for the final product.
-
-
-
-
搜索结果
5 条记录 (耗时 0.016 秒)
