摘要:
This invention provides a process for upgrading hydrocarbon feedstock comprising the steps of:(i) recovering a C.sub.4 -rich aliphatic stream from a catalytic cracking process;(ii contacting said C.sub.4 -rich aliphatic stream with an isomerization catalyst comprising a zeolite sorbing 30 to 55 mg n-hexane at 90.degree. C., 83 torr, and 15 to 40 mg 3-methylpentane at 90.degree. C., 90 torr, per g dry zeolite in the hydrogen form in a first reaction stage to selectively isomerize C.sub.4 n-olefins to C.sub.4 isoolefins; and(iii) contacting the product stream from said first reaction stage with a solid acid alkylation catalyst selected from the group consisting of MCM-36 and MCM-49, as described herein and zeolites having a Constraint Index of less than or equal to about 2, to produce isoparaffinic alkylate gasoline.
摘要:
The invention provides an isoparaffin: olefin alkylation process comprising contacting isoparaffin and olefin with a synthetic porous crystalline material which is characterized, in its uncalcined form, by an X-ray diffraction pattern including values substantially as set forth in Table I of the specification and having a composition comprising the molar relationshipX.sub.2 O.sub.3 :(n)YO.sub.2,wherein n is less than about 20, X is a trivalent element and Y is a tetravalent element.
摘要翻译:本发明提供了异链烷烃:烯烃烷基化方法,其包括使异链烷烃和烯烃与合成的多孔结晶材料接触,所述合成多孔结晶材料的特征在于其未煅烧形式,其X射线衍射图包括基本上如本说明书的表I所述的值,并且具有 包含摩尔关系X 2 O 3:(n)YO 2的组合物,其中n小于约20,X是三价元素,Y是四价元素。
摘要:
A process is disclosed for alkylating an isoparaffin with an olefin comprising the steps of:(a) reacting an isoparaffin having from 4 to 8 carbon atoms with an olefin having from 2 to 12 carbon atoms in a first alkylation reaction stage at temperature from about -40.degree. C. to about 500.degree. C. and overall isoparaffin:olefin feed weight ratio of from about 1:1 to about 250:1 with a solid alkylation catalyst comprising a synthetic porous crystalline material characterized by an X-ray diffraction pattern including values substantially as set forth in Table I of the specification and having a composition comprising the molar relationshipX.sub.2 O.sub.3 :(n)YO.sub.2,wherein n is less than about 35, X is a trivalent element and Y is a tetravalent element;(b) mixing the effluent from said first alkylation stage with additional olefin to evolve an intermediate stream having an isoparaffin:olefin weight ratio of from about 2:1 to about 100:1; and(c) reacting said intermediate stream in a second alkylation stage in the absence of intermediate fractionation with a liquid acid catalyst comprising H.sub.2 SO.sub.4 to produce C.sub.5 + alkylate.
摘要翻译:公开了一种用烯烃烷基化异链烷烃的方法,该方法包括以下步骤:(a)使第一烷基化反应阶段中具有4至8个碳原子的异链烷烃与具有2至12个碳原子的烯烃反应, 40℃至约500℃,总异构链烷烃:烯烃进料重量比为约1:1至约250:1,其中固体烷基化催化剂包含合成多孔结晶材料,其特征在于X射线衍射图包括值 基本上如说明书的表I所述,并且具有包含摩尔关系X 2 O 3:(n)YO 2的组成,其中n小于约35,X是三价元素,Y是四价元素; (b)将来自所述第一烷基化阶段的流出物与另外的烯烃混合以产生具有约2:1至约100:1的异链烷烃:烯烃重量比的中间料流; 和(c)在不与中间分级分离的第二烷基化阶段中使所述中间物流与包含H 2 SO 4的液体酸催化剂反应,以产生C5 +烷基化物。
摘要:
The present invention provides a process for alkylating an isoparaffin with an olefin comprising contacting an isoparaffin having from 4 to 8 carbon atoms with an olefin having from 2 to 12 carbon atoms in an alkylation reaction zone at temperature from about -20.degree. C. to about 200.degree. C. in the presence of a Bronsted acid and an inorganic, porous crystalline phase material having, after calcination, a d-spacing greater than about 18 Angstrom Units and having a benzene adsorption capacity of greater than 15 grams benzene per 100 grams of said material at 50 torr and 25.degree. C., wherein the molar ratio of said isoparaffin to said olefin is from about 1:1 to about 250:1 to evolve a product stream containing C.sub.5 + alkylate. In a preferred embodiment, the alkylation catalyst complex comprises a Bronsted acid and an inorganic, porous crystalline phase material having, after calcination, a hexagonal arrangement of uniformly-sized pores having diameters of at least about 13 Angstrom Units and exhibiting a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 Angstrom Units.
摘要:
There are provided a catalyst, a method for making this catalyst, and a process for using this catalyst in the alkylation of an isoparaffin with an olefin to provide an alkylate. The catalyst may be made from an as-synthesized material which, upon calcination, is capable of generating zeolites designated MCM-22. The as-synthesized material is then combined with a binder material, such as alumina, by an extrusion process. The uncalcined bound material may then be ammonium exchanged, followed by a calcination treatment. The as-synthesized material may also be swollen with a suitable swelling agent, such as a cetyltrimethylammonium compound, prior to the binding process.
摘要:
There are provided a catalyst, a method for making this catalyst, and a process for using this catalyst in the alkylation of an isoparaffin with an olefin to provide an alkylate. The catalyst may be made from an as-synthesized material which, upon calcination, is capable of generating zeolites designated MCM-22. The as-synthesized material is then combined with a binder material, such as alumina, by an extrusion process. The uncalcined bound material may then be ammonium exchanged, followed by a calcination treatment. The as-synthesized material may also be swollen with a suitable swelling agent, such as a cetyltrimethylammonium compound, prior to the binding process.
摘要:
Alkyl alkanethiolsulfonates are prepared by oxidation of the corresponding alkanethiol, dialkyl disulfide, or mixture thereof by aqueous hydrogen peroxide in the presence of a Group VIII transition metal catalyst.
摘要:
Process for alkylating an olefin with an isoparaffin comprising contacting an olefin-containing feed with an isoparaffin-containing feed with a crystalline microporous material under alkylation conversion conditions including temperature at least equal to the critical temperature of the principal component of the feed and pressure at least equal to the critical pressure of the principal component of the feed.