Low carbon hydrocarbon aromatization method
A technology of aromatization and low-carbon hydrocarbons, which is applied in the direction of chemical instruments and methods, hydrocarbons, hydrocarbons, etc., can solve the problems of reducing the yield of toluene, achieve the effects of reducing content, increasing content, and improving economy
Active Publication Date: 2011-04-27
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0006] As mentioned above, in the existing low-carbon hydrocarbon aromatization technology, toluene in the reaction product generally accounts for about half of the total aromatics content, but the industrial utilization rate
Method used
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[0021] Examples 1-5 and comparative examples
[0022] The experimental conditions and reaction results are shown in Table 3.
[0023] Table 3 Experimental conditions and reaction results
[0024]
[0025] It can be seen from the results in Table 3 that compared with the comparative scheme, the method of the present invention has slightly improved aromatics yield under the premise that toluene and C 9 The yield of aromatics is relatively reduced, and the yields of benzene and xylene are relatively increased, thus improving the economics of the process of aromatization of low-carbon hydrocarbons.
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The invention discloses a low carbon hydrocarbon aromatization method, which comprises that: under the low carbon hydrocarbon aromatization operating condition, a low carbon hydrocarbon material passes through reaction areas at least containing two aromatization catalysts, wherein the low carbon hydrocarbon material passes through a reaction area containing an HZSM-5 molecular sieve aromatizationcatalyst first and then passes through a reaction area containing a hydrogen mordenite aromatization catalyst. The low carbon hydrocarbon aromatization is carried out by using different aromatizationcatalysts, and on the premise of not reducing the yield of aromatic hydrocarbon, the content of benzene and dimethylbenzene with high utilization value in reaction products can be obviously improved,the content of methylbenzene with low utilization value is reduced and the economical efficiency of a low carbon hydrocarbon aromatization process is improved.
Description
technical field [0001] The invention relates to a low-carbon hydrocarbon aromatization method, in particular to a low-carbon hydrocarbon aromatization method for increasing the yield of benzene and xylene. Background technique [0002] With the decrease of petroleum resources, the utilization of low-carbon hydrocarbon resources such as natural gas, oil and gas light hydrocarbons, refinery gas and tail gas of coal-based synthetic gasoline has become an important research topic and a hot issue of concern. Aromatization of low-carbon hydrocarbons is an effective method to improve the utilization value of low-carbon alkanes, and one of the effective ways to optimize and comprehensively utilize carbon resources. Its aromatization products benzene, toluene and xylene are important raw materials for organic and fine chemicals. [0003] Catalysts used for aromatization of low-carbon hydrocarbons generally include BETA, Y zeolite, mordenite, small-pore SAPO, ZSM-5, ZSM-11, ZSM-12, Z...
Claims
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Login to View More IPC IPC(8): C07C15/02C07C15/04C07C15/08C07C2/42C07C2/76C07C5/41C10G45/68C10G45/70
Inventor 贾立明刘全杰徐会青王伟
Owner CHINA PETROLEUM & CHEM CORP
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