Catalyst for producing gasoline component by naphtha and methanol, and preparation method and application thereof

A catalyst and naphtha technology, which can be used in catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of limiting the application of low-carbon alkane aromatization technology, high energy consumption, etc., and achieve less carbon deposition. , the effect of long one-way life and high gasoline yield

Active Publication Date: 2019-04-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The aromatization process of light hydrocarbons using naphtha as raw material is accompanied by a series of reactions such as the activation of alkanes, dehydroaromatization or hydrogen transfer aromatization, and the temperature is usually higher than 500 °C, and it is a strong endothermic reaction process. High energy consumption limits the application of low-carbon alkane aromatization technology

Method used

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  • Catalyst for producing gasoline component by naphtha and methanol, and preparation method and application thereof
  • Catalyst for producing gasoline component by naphtha and methanol, and preparation method and application thereof
  • Catalyst for producing gasoline component by naphtha and methanol, and preparation method and application thereof

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Effect test

preparation example Construction

[0025] The preparation method of catalyst of the present invention comprises the steps:

[0026] (1) Mix hydrogen type ZSM-5 zeolite, alumina and silica sol, add peptizing agent to form, obtain carrier after drying and roasting,

[0027] (2) steaming the carrier at 450-700°C,

[0028] (3) impregnating the steam-treated carrier with a solution containing Ag compound, VA group element compound and rare earth element-containing compound solution, then drying and calcining.

[0029] In the above method, the (1) step is carrier molding, first mixing hydrogen ZSM-5 zeolite with alumina and silica sol and then molding. SiO in the silica sol 2 The content is 20-30% by mass, and the molding can be extrusion molding, drop ball molding, rolling ball molding or tablet molding. Preferably extrusion molding, during extrusion molding, preferably add appropriate amount of peptizer kneading, extrusion molding in the mixture, described peptizer is preferably nitric acid or hydrochloric acid,...

example 1

[0050] Preparation of the catalyst of the present invention.

[0051] (1) Preparation of carrier

[0052] Take 130 grams of SiO 2 / Al 2 o 3 The mol ratio is the HZSM-5 zeolite powder of 56, 35 grams of pseudo-boehmite powder, 35 grams of silica sol (SiO 2 Content is 30% by mass), add 100g concentration and be 1.0m% nitric acid aqueous solution peptization, knead and extrude into the bar of diameter 2 millimeters, 110 ℃ of drying hours, cut into the particle of length 2~3 millimeters, 550 ℃ of roasting 4 hours, make Get the carrier, the alumina in it is γ-Al 2 o 3 .

[0053] (2) steam treatment

[0054] Put the carrier prepared in step (1) into a tubular reactor, raise the temperature to 550° C. under 0.1 MPa and air flow, and pass in steam for 4 hours.

[0055] (3) Preparation of catalyst

[0056] Take 100 grams of the carrier treated with water vapor in step (2), soak it with 50ml of phosphoric acid solution with a concentration of 100mg / ml at 80°C for 1 hour, take t...

example 2

[0059] Prepare catalyst by the method for example 1, difference is (1) step gets 130 grams of SiO 2 / Al 2 o 3 HZSM-5 zeolite powder with a molar ratio of 56, 20 grams of pseudoboehmite powder, 50 grams of silica sol, adding 100 g concentration of 1.0 m% nitric acid aqueous solution for peptization, the α value of the prepared catalyst B is 32, see the composition Table 1.

[0060] The XRD diffraction pattern of catalyst B is shown in figure 2 , it can be seen that a new diffraction peak appears near 2θ of 20°, which is the diffraction peak of amorphous aluminum silicate.

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Abstract

A catalyst for producing a gasoline component by aromatization of naphtha and methanol includes a carrier and active components having contents calculated based on the carrier as follows: 0.1-5.0% bymass of Ag, 1.0-15.0% by mass of a VA group element oxide, 0.1-3.0% by mass of a rare earth element oxide; and the carrier includes 40-80% by mass of ZSM-5 zeolite, 3-30% by mass of aluminum oxide, and 5-30% by mass of amorphous aluminum silicate. The catalyst can promote the naphtha and the methanol to produce a co-aromatization reaction to form the gasoline component with a high-octane value, and can produce a high-quality liquefied gas by side.

Description

technical field [0001] The invention relates to a catalyst for producing gasoline components by aromatization of methanol and naphtha, a preparation method and application. Background technique [0002] BTX is an important basic chemical raw material. With the rapid development of my country's economy and the continuous improvement of people's living standards, my country's BTX aromatics industry has developed rapidly, and its apparent consumption has reached the first place in the world. Aromatization of light hydrocarbons is a new type of petroleum processing technology developed in the past two decades. It converts light hydrocarbons into aromatics or aromatics-rich high-octane gasoline blending components under the conditions of certain temperature, pressure and the presence of modified zeolite molecular sieve catalysts. Methanol aromatization is a technology for the production of BTX from coal, and an important supplement to the production of aromatics from petroleum. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/44B01J29/48B01J37/02C10G3/00
CPCC10G3/49B01J29/44B01J29/48B01J37/0207C10G2400/02C10G2300/305Y02P30/20Y02P20/52
Inventor 王子健于中伟马爱增刘洪全
Owner CHINA PETROLEUM & CHEM CORP
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