Shell Oil Comapny

China University of Petroleum

Shell Internationale Research Maatschappij, B.v.

Xianghai Meng

Chunming Xu

Zhichang Liu

Rui Zhang

Xuan Zhang

Peter Anton August Klusener

Ana Cecilia Patroni

Albertus Vincentius Petrus Van Den Bosch

Haiyan Liu

Tao Zheng

Jan De With

Chunmao Chen

Qinghong Wang

Jiahao Liang

Zhongjin Yi

The present disclosure provides a method of synthesizing an aluminosilicate molecular sieve by a crystal seed-assisted method, a natural aluminosilicate clay mineral treated and activated by an alkali is used as a crystal seed for synthesis of the aluminosilicate molecular sieve, and the target molecular sieve product is synthesized by hydrothermal crystallization, wherein the synthesis process does not require addition of conventional crystal seeds of a molecular sieve or use of any organic template agent, thus the synthesized product does not require a calcination process to remove the template agent. The method of synthesizing an aluminosilicate molecular sieve by a crystal seed-assisted method can meet the requirements of both crystallinity and nucleation time, and greatly reduce costs of synthesizing the aluminosilicate molecular sieve, and reduce the environmental pollution caused by removal of the template agent by calcinating.

Method of synthesizing an aluminosilicate molecular sieve by a crystal seed-assisted method

A method and a system for treatment of a spent chloroaluminate ionic liquid catalyst and an alkaline wastewater, where the method includes: 1) mixing the catalyst with a concentrated brine for hydrolysis reaction until residual activity of the catalyst is completely eliminated, to obtain an acidic hydrolysate and an acid-soluble oil; 2) mixing the acidic hydrolysate with an alkaline solution containing the alkaline wastewater for neutralization reaction until this reaction system becomes weak alkaline, to obtain a neutralization solution; 3) fully mixing the neutralization solution with a flocculant, carrying out sedimentation and separation, collecting the concentrated brine at an upper layer for reuse in the hydrolysis reaction, and collecting concentrated flocs at a lower layer; 4) dehydrating the concentrated flocs to obtain concentrated brine for reuse into the hydrolysis reaction, and collecting a wet solid slag; and 5) drying the wet solid slag to obtain a dry solid slag.

Method and system for treatment of spent chloroaluminate ionic liquid catalyst and alkaline wastewater

The present application provides a ZSM-35 molecular sieve and a preparation method thereof. The ZSM-35 molecular sieve is an aggregated ZSM-35 molecular sieve having a hierarchical macro-meso-microporous pore structure. Raw materials for the preparation method do not include an organic template agent and a crystal seed, and the preparation method includes the following steps: preparing a reactant gel where a molar ratio of SiO, AlO, NaO, KO, oxygen-containing acid radical and HO is (20-40):1.0:(1.5-2.0):(4.0-6.5):(1.0-4.0):(600-1200); sequentially performing an aging treatment and a crystallization treatment on the reactant gel, washing and drying a resulting synthetic product. The ZSM-35 molecular sieve provided by the present application may be obtained by synthesizing without using an organic template agent and crystal seed, and because it has a hierarchical pore structure, it is favorable for material diffusion and mass transfer.

ZSM-35 molecular sieve and preparation method thereof

The present invention relates to a process for preparing alkylate comprising the subsequent steps (a), (b) and (c):

Process for preparing alkylate comprising an improved solids removal step

The present invention relates to a regeneration process for producing a regenerated ionic liquid catalyst from solids formed in an ionic liquid alkylation process wherein a first ionic liquid is used as a catalyst which is a composite ionic liquid comprising ammonium cations, and anions being composite coordinate anions derived from two or more metal salts, the regeneration process comprising

Process for regeneration of ionic liquid catalyst

The present invention provides a method for revamping an HF or sulphuric acid alkylation unit to an ionic liquid alkylation unit, wherein the HF or sulphuric acid alkylation unit comprise at least: &#x2014;a reactor unit for contacting catalyst and hydrocarbon reactants; &#x2014;a separator unit for separating a reactor effluent into a catalyst phase and an alkylate-comprising hydrocarbon phase; &#x2014;a fractionator unit for fractionating the alkylate-comprising hydrocarbon phase into at least one stream comprising alkylate; &#x2014;a catalyst phase recycle means to recycle at least part of the catalyst phase from the separator unit to the reactor unit; which method includes: &#x2014;adapting the catalyst phase recycle means by providing a means for acid injection and/or a means for halohydrocarbon injection into the catalyst recycle means. The invention further provides a method for the production of alkylate.

Method for revamping an HF or sulphuric acid alkylation unit and method for the production of alkylate

Disclosed is an alkylation process using ionic liquid as catalyst, which process comprises separating halogenated hydrocarbons-rich fraction from the alkylation product by distillation and/or adsorption and reintroducing the separated fraction into the reaction system during the alkylation reaction, wherein the ionic liquid catalyst used in the alkylation reaction has a cation derived from hydrohalide of alkyl amine, hydrohalide of imidazole or hydrohalide of pyridine and an anion derived from one or more metallic compounds. The inventive process effectively utilizes the halogenated hydrocarbons in the alkylation product, prolongs the life of the ionic liquid catalyst, and reduces the halogen content in the alkylate oil.

Alkylation method using ionic liquid as catalyst

The present invention provides a method for revamping an HF or sulphuric acid alkylation unit to an ionic liquid alkylation unit, wherein the HF or sulphuric acid alkylation unit comprise at least: &#x2014;a reactor unit for contacting catalyst and hydrocarbon reactants; &#x2014;a separator unit for separating a reactor effluent into a catalyst phase and an alkylate-comprising hydrocarbon phase; &#x2014;a fractionator unit for fractionating the alkylate-comprising hydrocarbon phase into at least one stream comprising alkylate; and which method includes: &#x2014;providing a second separator unit suitable for the separation of solids from liquids downstream of the reactor unit suitable to reduce the solids content in at least part of the reactor effluent.

Method for revamping an HF or sulphuric acid alkylation unit

The present invention provides process for preparing an alkylate comprising contacting in a reactor a hydrocarbon mixture comprising at least an isoparaffin and an olefin with an acidic ionic liquid catalyst under alkylation conditions to obtain an alkylate, which process further comprises: &#x2014;withdrawing an alkylate-comprising reactor effluent from the reactor, wherein the reactor effluent comprises an ionic liquid phase and a hydrocarbon phase; &#x2014;separating at least part the reactor effluent into a hydrocarbon phase effluent and a multiple-phase effluent in a centrifugal separation unit; &#x2014;fractionating at least part of said hydrocarbon phase effluent into at least a stream comprising alkylate and a stream comprising isoparaffin.

Process for preparing an alkylate

The present invention provides process for preparing an alkylate comprising contacting in a reaction zone a hydrocarbon mixture comprising at least an isoparaffin and an olefin with an acidic ionic liquid catalyst under alkylation conditions to obtain an alkylate-comprising effluent, in which process: &#x2014;solids are formed in the reaction zone; &#x2014;a solids-comprising effluent comprising hydrocarbons and acidic ionic liquid is withdrawn from the reaction zone; and&#x2014;at least part of the solids-comprising effluent is treated to remove at least part of the solids to obtain a solids-depleted effluent. The invention further provides a process for treating an acidic ionic liquid comprising at least 0.1 wt % of solids based on the total weight of the acidic ionic liquid, wherein at least part of the solids are removed.

The present invention provides a method for revamping an HF or sulphuric acid alkylation unit to an ionic liquid alkylation unit, wherein the HF or sulphuric acid alkylation unit comprise at least: &#x2014;a reactor unit for contacting catalyst and hydrocarbon reactants; &#x2014;a separator unit for separating a reactor effluent into a catalyst phase and an alkylate-comprising hydrocarbon phase; &#x2014;a fractionator unit for fractionating the alkylate-comprising hydrocarbon phase into at least one stream comprising alkylate; and which method includes: &#x2014;providing one or more cyclone units downstream of the reactor unit to separate at least part of the reactor effluent in a catalyst phase and a alkylate-comprising hydrocarbon phase.

The present invention provides a process for preparing an alkylate, comprising: contacting in a reaction zone a hydrocarbon mixture comprising at least isoparaffin and an olefin with an acidic ionic liquid catalyst under alkylation conditions to obtain an alkylate; withdrawing an alkylate-comprising effluent from the reaction zone; separating at least part of the alkylate-comprising effluent into an hydrocarbon-rich phase and an ionic liquid catalyst-rich phase; fractionating part of the hydrocarbon-rich phase into at least an alkylate-comprising product and a isoparaffin-comprising stream; mixing another part of the hydrocarbon-rich phase with an olefin-comprising stream to form the hydrocarbon mixture; and providing the hydrocarbon mixture to the reaction zone.

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Beijing, China

Xianghai Meng