Preparation method and uses of condensate oil aromatization catalyst

Abstract

The invention discloses a preparation method and application of aromatization catalyst for gas condensate. The method is to load metal active components onto a nano molecular sieve, which comprises 0.1 to 10.0 weight percent of noble metal platinum, 1.0 to 10.0 weight percent of a second metal M, 89.0 to 98.9 weight percent of a carrier, wherein the carrier is composed of 60 to 90 weight percent of a nano HZSM-5 molecular sieve and titanium dioxide, the balance being aluminum oxide, the noble metal platinum is a fist active component. The catalyst is applicable to production of aromatic hydrocarbon through aromatization of gas condensate. With gas condensate as the raw material, benzene, toluene, xylene (BTX) together with a byproduct of 18 to 28 weight percent of high quality liquid gas are produced in a reactor of moving bed under the conditions of a total reaction pressure of between 0.5 and 2.0 Mpa, a temperature of between 400 and 580 DEG C, a weight space velocity of the raw material of between 0.5 and 4.0 h <-1>. The catalyst has high actively and selectivity anti-carbon capacity, reusability and high yield rate of aromatic hydrocarbon products.

Description

technical field [0001] The present invention relates to a preparation method and application of a condensate oil aromatization catalyst, more specifically, a condensate oil molecular sieve-loaded active metal aromatization catalyst and its preparation method, and using the catalyst to A method of aromatization of condensate. Background technique [0002] With the intensified development of petroleum and the large-scale exploitation of condensate oil and gas fields, a large amount of condensate oil products (C 3 —C 12 ), condensate is unfractionated liquid hydrocarbon recovered together with natural gas and oil field gas, it is a mixture of short-chain hydrocarbons and long-chain hydrocarbons, the yield of naphtha is usually 60~80% by weight, and the yield of diesel oil Usually 20~40m%. "West-to-East Gas Pipeline" is a major engineering project being carried out in China at the beginning of the 21st century. A large amount of natural gas condensate oil resources are obtain...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the raw material oil obtains 45-65% (accounting for the raw material oil weight) liquid after the first-stage reaction, the liquid yield is not high, and there are too many cracked products

However, if a fixed bed reactor is used, the aromatization catalyst is easily deactivated due to coke, and multiple rea

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