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Method for co-producing low-carbon olefins by direct conversion of catalyst and synthesis gas to liquid fuel

A catalyst and synthesis gas technology, applied in catalysts, molecular sieve catalysts, carbon compound catalysts, etc., can solve the problem of low selectivity of target products, and achieve the effects of mild conditions, high product yield and selectivity, and high oil quality.

Active Publication Date: 2021-01-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrocarbon products of the whole reaction have a wide distribution of carbon atoms, and the selectivity of the target product is low, such as the selectivity of gasoline is lower than 50%.

Method used

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  • Method for co-producing low-carbon olefins by direct conversion of catalyst and synthesis gas to liquid fuel
  • Method for co-producing low-carbon olefins by direct conversion of catalyst and synthesis gas to liquid fuel
  • Method for co-producing low-carbon olefins by direct conversion of catalyst and synthesis gas to liquid fuel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] One, the preparation of catalyst A

[0026] (1), the etching method synthesizes the ZnO material with polar surface:

[0027] (1) Weigh 0.446g (1.5mmol) Zn(NO 3 ) 2 ·6H 2 O and 0.480g (12mmol) NaOH, and then measure 30ml of deionized water into it, and stir for more than 0.5h to make the solution evenly mixed. The temperature was raised to 160°C, the reaction time was 20 hours, and the precipitate was decomposed into zinc oxide; naturally cooled to room temperature. The reaction solution was centrifuged to collect the precipitate after centrifugation, and washed twice with deionized water to obtain ZnO oxide;

[0028] (2) Use etchant such as oleic acid, urotropine, ethylenediamine, ammonia water, hydrazine hydrate, etc., and ultrasonically mix with ZnO oxide at room temperature, soak ZnO oxide in the etchant solution, etchant Form a complexation or direct reduction reaction with zinc oxide; heat the above suspension, then take it out, wash and filter, and obtain a ...

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Abstract

The invention belongs to the field of producing liquid fuel and coproducing low carbon olefin by using synthesis gas, and particularly relates to a method of producing the liquid fuel and coproducingthe low carbon olefin through the direct conversion of a catalyst and the synthesis gas. According to the method, the synthesis gas is used as a reaction raw material and reacts on a stationary bed ora moving bed; the catalyst comprises a component A and a component B; the component A is an active metallic oxide; the active component of the component B is a molecular sieve having one or more thantwo of TON, MTT, MER; and the weight ratio of the catalyst A to the catalyst B is 0.1-20. The pressure of the synthesis gas is 0.1-10MPa; the reaction temperature is 300-600 DEG C; and the airspeed is 300-20000h<-1>. Gasoline with a high octane value is mainly produced by reaction; the low carbon olefin is coproduced; meanwhile byproduct methane has low selectivity (less than 10%); and the methodhas very good application prospect.

Description

technical field [0001] The invention belongs to the joint production of low-carbon olefins by preparing liquid fuels from synthesis gas, and in particular relates to a method for directly converting a catalyst and synthesis gas to produce liquid fuels and joint production of low-carbon olefins. Background technique [0002] With the development of the economy and the improvement of living standards, the demand for liquid fuels and chemicals has also increased sharply year by year. Gasoline is currently produced mainly by catalytic reforming of heavy naphtha. With the increasing consumption of global oil resources and the high price of crude oil, especially for my country, which is short of oil resources, more than 60% of its annual oil consumption depends on imports. It is necessary to seek an alternative process route, develop and utilize coal The method of preparing low-carbon olefins from non-oil-based carbon resources such as biomass and biomass has important social and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/70B01J29/78C07C1/04C07C11/02C10G2/00
CPCB01J29/708B01J29/7092B01J29/7096B01J29/7861B01J29/7884B01J29/7892B01J2229/186C07C1/043C07C2529/70C07C2529/78C10G2/334C07C11/02
Inventor 潘秀莲焦峰包信和
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI