Research Institute of Petroleum Processing, Sinopec

China Petroleum Chemical Corporation

China Petrochemical Corporation

Other

Fudan University

China Petroleum & Chemical Corporation

Sinopec Research Institute of Petroleum Processing Co., Ltd.

China Research Institute of Petroleum Processing, Sinopec

Aizeng Ma

Jieguang Wang

Enze Min

Jincheng Pan

Jianqiang Ren

Xinkuan Zhang

Wanzhen Lu

Yajun Zhao

Tong Liu

Chen Dong

Jiaxin Wang

Chunming Wang

Jingfa Deng

Yanpeng Yang

Changqing Ji

Hengfang Chen

Sennian Yang

A method for producing light aromatic hydrocarbons from Caromatic hydrocarbons includes a step of contacting a Caromatic hydrocarbon with a dealkylation catalyst comprising a KL zeolite, and platinum and a modifying metal supported thereon in the presence of hydrogen, to obtain a light aromatic hydrocarbon. The modifying metal is selected from the group consisting of Group IIA metals and rare earth metals. By using a Pt/KL catalyst comprising a specific modifying metal in the dealkylation reaction of Caromatic hydrocarbons for producing light aromatic hydrocarbons, the method shows the advantages of high conversion rate of feedstock, high yield of light aromatic hydrocarbons, good reaction selectivity.

Method for producing light aromatic hydrocarbons

A method of producing a highly-pure aluminum hydroxide, comprising the following steps: (1) reacting alcohol with metal aluminum to produce aluminum alkoxide, then hydrolyzing the aluminum alkoxide with water to produce an aluminum hydroxide slurry and an alcohol, filtering the aluminum hydroxide slurry, washing a resulting filter cake with water to remove the alcohol trapped therein, and drying the filter cake after the water washing to produce an aluminum hydroxide powder, (2) sending the alcohol-containing water produced in step (1) to an alcohol extraction unit for separating water and alcohol through extraction, and sending the separated water back to step (1) for recycling, (3) dehydrating the hydrous alcohol produced by hydrolyzing the aluminum alkoxide in step (1) before using it as the raw materials for reacting metal aluminum with alcohol to produce aluminum alkoxide in step (1). The method can improve the recovery of alcohol, reduce the production cost of a highly-pure aluminum hydroxide, improve the purity of aluminum oxide and achieve a zero discharge of sewage by recycling water.

Method of producing a highly-pure aluminum hydroxide

Disclosed herein is a process for catalytically reforming naphtha, comprising, in the presence of hydrogen gas, contacting naphtha with at least one reforming catalyst under the conditions of a pressure ranging from 0.15 to 3.0 MPa, a temperature ranging from 300 to 540&#xb0; C., a volume space velocity ranging from 2.1 to 50 h, to carry out a shallow catalytic reforming reaction so as to achieve a naphthene conversion ratio of greater than 85 mass %, and a conversion ratio of paraffins to arenes and C4hydrocarbons of less than 30 mass %.

Processes for catalytically reforming naphtha

The present invention relates to a pre-passivation process for a continuous reforming apparatus prior to the reaction, or a passivation process for a continuous reforming apparatus during the initial reaction, comprising loading a reforming catalyst into the continuous reforming apparatus, starting the gas circulation and raising the temperature of a reactor, injecting sulfide into the gas at a reactor temperature ranging from 100-650&#xb0; C., controlling the sulfur amount in the recycle gas within a range of 0.5-100&#xd7;10L/L so as to passivate the apparatus.

Pre-passivation process for a continuous reforming apparatus, and passivation process for a continuous reforming apparatus during the initial reaction

A multimetallic reforming catalyst and the preparation process thereof are disclosed. Said catalyst comprises the following components on the basis of mass percent: 0.01-2.0 of a Group VIII metal, 0.01-5.0 of a Group IVA metal, 0.01-10.0 of Eu, 0.01-10.0 of Ce, 0.10-10.0 of a halogen, and 63.00-99.86 of a refractory inorganic oxide. This catalyst has relatively high activity and selectivity, low carbon deposition rate and long lifetime for reformation of naphthas.

Multimetallic reforming catalyst comprising platinum and tin, the preparation and the application thereof

An amorphous alloy catalyst containing nickel and phosphorus comprising a porous carrier, a Ni--P amorphous alloy supported on the carrier, and a pre-supported catalytic component for inducing and catalyzing the formation of the Ni--P amorphous alloy onto the carrier. In a preferred embodiment, the catalyst contains 0.15-30 wt % of Ni, based on the total weight of the catalyst, 0.03-10 wt % of P, based on the total weight of the catalyst, 0.01-3.5 wt % of B, based on the total weight of the catalyst. The nickel exists in the form of Ni--P or Ni--B amorphous alloy, the atomic ration Ni/P in the Ni--P amorphous alloy is in range of 0.5-10, the atomic ratio Ni/B in the Ni--B amorphous alloy is in range of 0.5-10. The catalyst may further comprise from 0.01 to 20 wt % of a metal additive (M), based on the total weight of the catalyst. The metal additive (M) refers to one or more metal elements, except Ni, which can be reduced from the corresponding salt into its elemental form.

Amorphous alloy catalyst containing phosphorus, its preparation and use

The present invention discloses an amorphous alloy catalyst containing boron, which is composed of a porous carrier, a Q-B amorphous alloy, and a metal additive (M), the content of Q-B amorphous alloy together with metal additive is from 0.1 to 60 wt %, based on the total weight of the catalyst, in which the atomic ratio (Q+M)/B is 0.5-10, and the Q/M atomic ratio is 0.1-1000; wherein Q represents an metal selected from group VIII and B represents boron; and said metal additive (M) refers to those one or more metal elements which can be reduced to its/their elemental states from the corresponding salts by a solution containing BH.sub.4.sup.- with the exception that M is not the one which is used as Q. Said catalyst exhibits high catalytic hydrogenation activity.

Amorphous alloy catalyst containing boron, its preparation and use

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Beijing, China

Aizeng Ma