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Catalyst for preparing liquefied petroleum gas from synthesis gas and preparation method thereof

A liquefied petroleum gas and catalyst technology, which is applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as affecting technical economic benefits and low added value, and achieve increased benefits, high conversion rate, and stability. good effect

Active Publication Date: 2022-05-17
BEIJING GAOXIN LIHUA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many by-products will be produced in this reaction. In the prior art, the methane content of by-products in the production of liquefied petroleum gas from syngas is relatively high. As we all know, methane in the products is a component with low added value, and the high amount of methane generated affects the technology. Economic benefits, beneficial to production

Method used

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  • Catalyst for preparing liquefied petroleum gas from synthesis gas and preparation method thereof
  • Catalyst for preparing liquefied petroleum gas from synthesis gas and preparation method thereof
  • Catalyst for preparing liquefied petroleum gas from synthesis gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The specific implementation process is roughly the same as that of Comparative Example 1, the difference is that AgNO was added when preparing the solution 3 , the content of Ag is 0.5wt%, and the catalyst Cat1 is obtained. Cat1 prepared in Example 1 was used as the catalyst for the second stage. When reacting for 8 hours, the product was introduced into gas chromatography for on-line analysis. The reaction results are shown in Table 2.

Embodiment 2

[0053] Using the method of Example 1, the difference is that the amount of Ag added is reduced to obtain catalyst Cat2.

Embodiment 3

[0055] Adopt the method of embodiment 1, difference is that the amount of adding Ag increases, obtains catalyst Cat3.

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Abstract

The invention discloses a catalyst for preparing liquefied petroleum gas from synthesis gas and a preparation method thereof. The catalyst is composed of Ni, Cu, Ag and Hβ molecular sieve, wherein, based on the weight of the catalyst, the total mass fraction of Ni and Cu is 5%-15%, the mass fraction of Ag is no more than 2%, and the rest is Hβ molecular sieve ; The mass ratio of Ni:Cu is 0.9:1-1:0.9, and the mass ratio of Ni:Ag is (4-22):1, and the catalyst is used in the second step of the two-step synthesis gas to liquefied petroleum gas process. The application in the segment, that is, for the conversion of dimethyl ether to produce liquefied petroleum gas. In application, the catalyst has high conversion rate of synthesis gas, high selectivity of liquefied petroleum gas in products, greatly reduced content of methane, and good stability of catalyst activity.

Description

technical field [0001] The invention relates to a catalyst for preparing liquefied petroleum gas from synthesis gas and a preparation method thereof, in particular to a catalyst used for the conversion of dimethyl ether and its preparation method for the second stage in the preparation of liquefied petroleum gas by a two-step synthesis process. Preparation. Background technique [0002] Liquefied petroleum gas (LPG) is mainly composed of propane and butane, and contains a small amount of propylene and butene. Liquefied Petroleum Gas (LPG) is an environmentally friendly energy source, featuring high calorific value, no dust, less pollution, and easy transportation. It has become an indispensable and important resource for civil and industrial production. China is adjusting its energy structure, and liquefied petroleum gas as a clean fuel is in line with the national development strategy. At present, various cities in China have successively established automobile gas statio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/76C10L3/12
CPCB01J29/7615C10L3/12B01J2229/18
Inventor 张谦温宋兆伟扬大奎韩静
Owner BEIJING GAOXIN LIHUA TECH CO LTD