Catalyst for preparing hydrocarbons from oxygen-containing compounds, and preparation method and application thereof

A catalyst and compound technology, applied in the preparation of liquid hydrocarbon mixtures, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of no systematic reports, etc., achieve small crystallinity loss, high hydrocarbon selectivity, and long single-pass life Effect

Inactive Publication Date: 2015-09-23
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no systematic report on the key steps in the alkali treatment process of molecular sieves, the relationship between alkali treatment conditions and industrial performance.

Method used

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  • Catalyst for preparing hydrocarbons from oxygen-containing compounds, and preparation method and application thereof
  • Catalyst for preparing hydrocarbons from oxygen-containing compounds, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Pour the nitrate solution of the modifying element Zn into a commercially available ZSM-5 molecular sieve, the modifying element accounts for 4.0% of the mass of the catalyst, stir well, let stand for 24h, dry at 100°C, and roast at 550°C for 5h to obtain Modified ZSM-5 molecular sieve, the modified molecular sieve and the binder SB powder were kneaded and extruded into rods, left standing at room temperature for 24 hours, dried at 100°C, and calcined at 550°C for 5 hours. The strip catalyst obtained is subjected to alkali treatment in a fixed bed reactor, the concentration of sodium hydroxide used is 0.1mol / L, the treatment conditions are temperature 90°C, and the mass space velocity of sodium hydroxide solution is 3h -1 , the treatment time is 6h, after the sodium hydroxide solution is processed, the ammonium nitrate solution is replaced for ammonium exchange treatment. -1 , the treatment time is 6h, the catalyst exchanged by ammonium nitrate is at 600℃, and the mass s...

Embodiment 2～7

[0038] According to the method of embodiment 1, the modifying elements accounted for 4.0% of the mass of the catalyst into 1%, 2%, 6%, 8%, 10%, the ZSM-5 content remains unchanged, and the corresponding binder content is 19% , 18%, 14%, 12%, 10% others are identical with embodiment 1.

Embodiment 8

[0040] According to the method of embodiment 1, change binder SB powder into pseudo-boehmite, all the other steps are the same as embodiment 1, and the final composition of catalyst is that ZSM-5 content is 80%, and binder pseudo-boehmite content It is 16%, and the content of modifying elements is 4%.

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Abstract

The invention discloses a catalyst for preparing hydrocarbons from oxygen-containing compounds, and a preparation method and application thereof. The catalyst, on a basis of total weight, comprises 35-84% of ZSM-5 molecular sieve, 15-60% of a binder and 0.1- 15% of modified elements. The catalyst is prepared by preparing modified ZSM-5 molecular sieve, mixing the ZSM-5 molecular sieve with the binder and performing extrusion molding, and post-processing. The catalyst is used for preparing hydrocarbons from oxygen-containing compounds, is high in catalytic activity, good in hydrocarbon selectivity, long in single pass life and simple in preparation process.

Description

technical field [0001] The invention relates to a catalyst for producing hydrocarbons from oxygen-containing compounds, in particular to a catalyst for converting oxygen-containing compounds into hydrocarbons, its preparation method and application. technical background [0002] With the development of coal chemical industry, the synthesis and conversion technology of coal-based oxygenates is becoming more and more mature. Oxygenates account for more than 80% of the output of oxygenated compounds, and the output of oxygenated compounds has increased year by year, resulting in a serious problem of overcapacity. It is 50.5 million tons / year. In 2011, the output of oxygenates in my country was 19.841 million tons, and the operating rate of the industry was about 41%. It is estimated that my country's methanol output in 2012 will be 26 million tons, and the industry's operating rate will be 51%. The oxygenate hydrocarbon production market has a large space, and the oxygenate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40B01J29/46C10G3/00
CPCY02P30/20
Inventor 李康魏小波郝代军韩海波
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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