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Catalyst system for preparing hydrocarbons and use thereof

A catalyst, a technology for producing hydrocarbons, applied in molecular sieve catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of inconvenient filling, low selectivity of target products aromatics, low CO conversion rate, etc.

Active Publication Date: 2019-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problems to be solved by the present invention are the inconvenient filling, high industrial application investment, low CO conversion rate, low selectivity of target product aromatics, C 5+ In view of the problems of high hydrocarbon content and complex catalyst preparation, a new catalyst system is provided. When this system is used to convert syngas to produce aromatics and co-produce light hydrocarbons, it has the advantages of simple catalyst preparation, convenient loading, high CO conversion rate, and target Product aromatics high selectivity, C 5+ Low hydrocarbon content, low equipment investment cost and other advantages

Method used

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  • Catalyst system for preparing hydrocarbons and use thereof
  • Catalyst system for preparing hydrocarbons and use thereof
  • Catalyst system for preparing hydrocarbons and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Preparation of Manganese Oxide Mn by Precipitation Method 2 o 3 , the HZSM-5 molecular sieve with a Si / Al ratio of 12 was synthesized by a hydrothermal method, and the obtained molecular sieve was denoted as HZ5(12); the Mn 2 o 3 , HZ5(12) powder is mechanically mixed according to the mass ratio of 1:1, then granulated and crushed to obtain catalyst particles of 20-40 mesh. Weigh 1.5g of catalyst particles and load them into the reactor. At a reaction temperature of 395°C and a pressure of 2.0MPa, the feed gas H 2 / CO ratio 1.0, airspeed 2000h -1 Catalyst evaluation was carried out under the conditions. Before the reaction, the catalyst was heated with H at 395°C 2 Pretreatment 2h.

[0053] Feed gas H 2 / CO / N 2 , the product was analyzed online by gas chromatography, where N 2 Quantitative analysis of the product was achieved for the internal standard. The product is separated by three columns, one of which is a hayesep-Q packed column, and the separated prod...

Embodiment 2

[0055] Preparation of Chromium Oxide Cr by Precipitation Method 2 o 3 , the HZSM-5 molecular sieve with a Si / Al ratio of 12 was synthesized by a hydrothermal method, and the obtained molecular sieve was denoted as HZ5(12); the Cr 2 o 3 , HZ5(12) powder is mechanically mixed according to the mass ratio of 1:1, then granulated and crushed to obtain catalyst particles of 20-40 mesh. Weigh 1.5g of catalyst particles and load them into the reactor. At a reaction temperature of 395°C and a pressure of 2.0MPa, the feed gas H 2 / CO ratio 1.0, airspeed 2000h -1 Catalyst evaluation was carried out under the conditions. Before the reaction, the catalyst was heated with H at 395°C 2 Pretreatment 2h. The results of CO conversion and product selectivity are shown in Table 1.

Embodiment 3

[0057] Preparation of Cerium Oxide CeO by Hydrothermal Method 2 , the HZSM-5 molecular sieve with a Si / Al ratio of 12 was synthesized by a hydrothermal method, and the obtained molecular sieve was denoted as HZ5(12); the CeO 2 , HZ5(12) powder is mechanically mixed according to the mass ratio of 1:1, then granulated and crushed to obtain catalyst particles of 20-40 mesh. Weigh 1.5g of catalyst particles and load them into the reactor. At a reaction temperature of 395°C and a pressure of 2.0MPa, the feed gas H 2 / CO ratio 1.0, airspeed 2000h -1 Catalyst evaluation was carried out under the conditions. Before the reaction, the catalyst was heated with H at 395°C 2 Pretreatment 2h. The results of CO conversion and product selectivity are shown in Table 1.

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Abstract

The invention discloses a process for producing of aromatic hydrocarbons and co-production of light hydrocarbons through synthesis gas conversion and a catalyst used in the process; a catalyst systemhas synthesis gas conversion activity and aromatic hydrocarbon / light hydrocarbon synthesis activity. The synthesis gas conversion activity is provided by a metal oxide catalyst, the aromatic hydrocarbon / light hydrocarbon synthesis activity is provided by a solid acid catalyst including a ZSM-5 or ZSM-11 molecular sieve and modified molecular sieve. The active component of the metal oxide is preferably selected from one or at least one of Cr, Zr, Mn, Ce, La, Ti, In and Zn. The silicon-aluminum ratio of the ZSM-5 or ZSM-11 molecular sieve / the modified molecular sieve ranges from 12-250. Thecatalyst form comprises a composite catalyst or a multi-section catalyst system. Under the conditions that the molar ratio of H2 to CO in the raw material is 0.25-5.0, and / or the reaction temperatureis 300-500 DEG c and / or the pressure is 0.5-10.0 MPa, and / or the volume space velocity is 1000-20000 h<-1>, the synthesis gas can be efficiently converted in one-section or multi-section catalyst systems to generate aromatic hydrocarbon and light hydrocarbon products. The process is a non-fischer-tropsch route, and is a novel route for producing of the aromatic hydrocarbons and co-production of the light hydrocarbons through synthesis gas conversion by virtue of a one-step method.

Description

technical field [0001] The invention relates to a process and a catalyst for converting synthesis gas to produce aromatic hydrocarbons and co-production of light hydrocarbons, in particular to a process for producing aromatics and co-production of light hydrocarbons through the conversion of synthesis gas by using a composite catalyst or a multi-stage catalyst system. Background technique [0002] Hydrocarbons are an important class of basic chemicals. As energy components and synthetic material monomers, hydrocarbons play an indispensable role in the national economy and people's lives. For a long time, hydrocarbon products mainly come from petroleum refining. With the increasing shortage of petroleum resources, exploring new paths for hydrocarbon production has become the only way to alleviate the petrochemical energy crisis, realize the sustainable development of the chemical industry, and promote my country's economic development and energy strategic security. my countr...

Claims

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Application Information

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IPC IPC(8): B01J29/48B01J29/80B01J29/40B01J29/46B01J29/44B01J37/03B01J37/10B01J37/08C10G2/00
CPCY02P20/52
Inventor 刘畅刘苏周海波苏俊杰王仰东焦文千
Owner CHINA PETROLEUM & CHEM CORP
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