-
公开(公告)号：US10899682B2
公开(公告)日：2021-01-26
申请号：US16330785
申请日：2017-09-06
IPC分类号： B01J29/06 , C07C1/24 , B01J29/65 , C01B39/02 , B01J21/08 , B01J35/02 , B01J37/00 , B01J29/40 , B01J35/00 , B01J37/12 , B01J29/70 , B01J37/14 , B01J37/30 , C07C5/27 , B01J29/08 , C07C11/09
摘要： Process for preparing a catalyst composition containing a modified crystalline aluminosilicate and a binder, wherein the catalyst composition comprises from 5 to 95% by weight of crystalline aluminosilicate as based on the total weight of the catalyst composition, the process being remarkable in that it comprises a step of steaming said crystalline aluminosilicate: at a temperature ranging from 100° C. to 380° C.; under a gas phase atmosphere containing from 5 wt % to 100 wt % of steam; at a pressure ranging from 2 to 200 bars; at a partial pressure of H2O ranging from 2 to 200 bars; and said steaming being performed during at least 30 min and up to 144 h; and in that the process also comprises a step of shaping, or of extruding, the crystalline aluminosilicate with a binder, wherein the binder is selected to comprise at least 85 wt % of silica as based on the total weight of the binder, and less than 1000 ppm by weight as based on the total weight of the binder of aluminium, gallium, boron, iron and/or chromium.
-
公开(公告)号：US11358911B2
公开(公告)日：2022-06-14
申请号：US17413080
申请日：2019-11-27
摘要： A process for dehydrating an ethanol feedstock to give ethylene, includes:
a) a vaporization stage;
b) a heating stage;
c) a dehydration stage in a multitubular reactor comprising tubes having a length of between 2 and 4 m, said tubes comprising a, preferably zeolitic, dehydration catalyst, the feedstock having an inlet temperature of greater than 400° C. and less than 550° C. and an inlet pressure of between 0.8 and 1.8 MPa, the heat transfer fluid having an inlet temperature of greater than 430° C. and less than 550° C. and a mass flow rate such that the ratio of the mass flow rates of the heat transfer fluid relative to the feedstock is greater than or equal to 10;
d) separation into an effluent comprising ethylene and an aqueous effluent;
e) purification of the aqueous effluent and separation of a stream of purified water and a stream of unconverted ethanol.-
公开(公告)号：US11230511B2
公开(公告)日：2022-01-25
申请号：US16347858
申请日：2017-11-06
发明人： Sylvie Maury , Vincent Coupard , Thibault Heinz , Guillaume Duplan , Joseph Lopez , Nikolai Nesterenko
摘要： A process for the isomerizing dehydration of a feedstock including a primary monoalcohol, alone or as a mixture, of formula R—CH2—OH, wherein R is a nonlinear alkyl radical of general formula CnH2n+1 where n is an integer between 3 and 20, the process taking place in the gas phase at a weighted average temperature between 275° C. and 400° C., at a pressure between 0.3 MPa and 1 MPa and at a WWH (weight per weight per hour) between 5 and 10 h−1, in the presence of a catalyst containing at least one silicic binder and at least one zeolite having at least one series of channels, the opening of which is defined by a ring of 8 oxygen atoms (8MR), process wherein vaporized feedstock entering the reactor has a weight content of water of from 4% to 35%.
-
4.发明申请公开(公告)号：US20190233348A1
公开(公告)日：2019-08-01
申请号：US16330784
申请日：2017-09-06
CPC分类号： C07C5/2775 , B01J21/08 , B01J29/65 , B01J29/70 , B01J29/7023 , B01J29/7026 , B01J29/7038 , B01J29/7042 , B01J29/7046 , B01J35/023 , B01J37/0009 , B01J37/0063 , B01J2029/081 , B01J2229/16 , B01J2229/34 , B01J2229/36 , B01J2229/40 , B01J2229/42 , C01B39/026 , C07C1/24 , C07C11/09 , C07C2529/65 , C07C2529/70 , C07C11/08
摘要： The invention relates to a process for dehydration of a mono-alcohol, or of a mixture of at least two mono-alcohols, having at least 2 carbon atoms and at most 7 carbon atoms into olefins having the same number of carbons, wherein the process uses a catalyst composition that comprises a modified crystalline aluminosilicate has an acidity between 350 and 500 μmol/g that comprises, and further wherein the catalyst composition is obtained by a process comprising the steps of providing a crystalline aluminosilicate having a Si/Al framework molar ratio greater than 10; and steaming said crystalline aluminosilicate, or said shaped and/or calcined crystalline aluminosilicate at a temperature ranging from 100° C. to 380° C.; and under a gas phase atmosphere, without liquid, containing from 5 wt % to 100 wt % of steam; at a pressure ranging from 2 to 200 bars; at a partial pressure of H2O from 2 bars to 200 bars; and said steaming being performed during at least 30 min and up to 144 h.
-
公开(公告)号：US10099969B2
公开(公告)日：2018-10-16
申请号：US15514280
申请日：2015-09-22
发明人： Tom Vivien , Sylvie Maury , Vincent Coupard , Delphine Bazer-Bachi , Nikolai Nesterenko , Nadiya Danilina
IPC分类号： C07C1/24
摘要： Isomerizing dehydration of feedstock containing a primary alcohol substituted in position 2 by an alkyl group in which the feedstock is heated to the reaction temperature by indirect heat exchange then vaporization by mixing with a diluent effluent, the diluted and vaporized feedstock being dehydrated in at least one dehydration reactor operating in gas phase at an inlet temperature comprised between 250 and 375° C., at a pressure comprised between 0.2 MPa and 1 MPa and at a WHSV comprised between 1 and 18 h−1, in the presence of a catalyst comprising a zeolite having at least one series of channels the opening of which is defined by a ring with 8 oxygen atoms (8MR) and a binder, the catalyst being coked beforehand in-situ or ex-situ, so as to produce a dehydration effluent, the latter being treated and separated into a diluent effluent, an alkenes effluent and a heavy hydrocarbons effluent.
-
6.发明授权公开(公告)号：US11117844B2
公开(公告)日：2021-09-14
申请号：US16629620
申请日：2018-07-10
摘要： The invention relates to a process for dehydrating alcohols to olefins, comprising a reaction step and a catalyst selectivation step.
-
公开(公告)号：US10773250B2
公开(公告)日：2020-09-15
申请号：US16680709
申请日：2019-11-12
发明人： Nikolai Nesterenko , Delphine Minoux , Nadiya Danilina , Jean-Pierre Dath , Vincent Coupard , Sylvie Maury
IPC分类号： B01J29/06 , B01J29/67 , B01J29/65 , B01J29/66 , B01J29/68 , B01J29/69 , B01J37/02 , C01B39/02 , C07C1/24 , B01J29/90 , B01J29/70 , C07C5/27 , B01J37/30 , C01B39/44 , B01J29/74
摘要： The present invention relates to a catalyst composition comprising a modified crystalline aluminosilicate of the Framework Type FER having Si/Al framework molar/ratio greater than 20 characterized in that in said modified crystalline aluminosilicate the ratio between the strong acid sites and the weak acid sites, S/W, is lower than 1.0 and having the extra framework aluminum (EFAL) content lowered to less than 10 wt % preferably 5 wt % even more preferably less than 2 wt % measured by 27Al MAS NMR. The present invention further relates to a process for producing olefins from alcohols in presence of said catalyst composition.
-
公开(公告)号：US10604456B2
公开(公告)日：2020-03-31
申请号：US16134363
申请日：2018-09-18
发明人： Kirill Drobyshev , Vincent Coupard , Jean-Christophe Gabelle , Nikolai Nesterenko , Christophe Thille
摘要： This invention relates to a method for dehydration of alcohols into olefins comprising an improved step for recovery of unreacted alcohol.
-
公开(公告)号：US10472300B2
公开(公告)日：2019-11-12
申请号：US15540327
申请日：2015-12-18
发明人： Delphine Minoux , Nikolai Nesterenko , Cindy Adam , Walter Vermeiren , Philip De Smedt , Jean-Pierre Dath , Vincent Coupard , Sylvie Maury , Nicolas Aribert
摘要： The present invention is a process for dehydrating an alcohol to prepare a corresponding olefin, comprising: (a) providing a composition (A) comprising at least an alcohol having at least 2 carbon atoms, optionally water, optionally an inert component, in a dehydration unit, (b) placing the composition (A) into contact with an acidic catalyst in a reaction zone of said dehydration unit at conditions effective to dehydrate at least a portion of the alcohol to make a corresponding olefin, (c) recovering from said dehydration unit an effluent (B) comprising: at least an olefin, water, undesired by-products including aldehydes and light products, optionally unconverted alcohol(s), optionally the inert component, wherein, said composition (A)—providing step (a) comprises adding an effective amount of one or more sulfur containing compound capable to reduce the undesired by-products by comparison with a non introduction of such sulfur containing compound. The component introduced at step (a) can be chosen from the group consisting of thiols, sulfides, disulfides.
-
10.发明申请公开(公告)号：US20150291485A1
公开(公告)日：2015-10-15
申请号：US14647174
申请日：2013-11-18
发明人： Vincent Coupard , Natacha Touchais , Thomas Plennevaux , Emilie Kobel , Stephanie Fleurier , Walter Vermeiren , Delphine Minoux , Philip De Smedt , Cindy Adam , Nikolai Nesterenko
CPC分类号： C07C1/24 , C07C29/76 , C07C41/09 , C07C2527/173 , C07C2529/40 , C07C2529/85 , C07C11/04 , C07C43/06 , C07C31/08
摘要： The invention relates to a process for dehydration of an ethanol feedstock into ethylene comprising at least the stages: a) A stage for pretreatment of the ethanol feedstock on an acidic solid, b) A stage for evaporation of said pretreated ethanol feedstock in a heat exchanger, c) A stage for superheating said evaporated feedstock in such a way as to bring it to an inlet temperature that is compatible with the temperature of a dehydration reaction, d) A stage for dehydration of said feedstock that is obtained from stage c) in at least one adiabatic reactor that contains at least one dehydration catalyst.
摘要翻译： 本发明涉及一种将乙醇原料脱水成乙烯的方法，至少包括以下阶段：a）用于在酸性固体上预处理乙醇原料的阶段，b）在热交换器中蒸发所述预处理的乙醇原料的阶段 c）用于使所述蒸发的原料过热以使其达到与脱水反应的温度相适应的入口温度的阶段，d）用于脱水所述原料的阶段，其从阶段c） 至少一个含有至少一种脱水催化剂的绝热反应器。
-
-
-
-
-
-
-
-
-
搜索结果
74 条记录 (耗时 0.028 秒)
