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Method for producing aromatic compound and method for producing hydrogenated aromatic compound

A technology for aromatic compounds and production methods, which are applied in the fields of condensation hydrocarbon production with dehydrogenated hydrocarbons, chemical recovery, organic chemistry, etc., and can solve the problems of inability to obtain reaction effects and the like

Active Publication Date: 2010-09-08
MITSUBISHI RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the gas containing unreacted lower hydrocarbons after the separation of aromatic compounds is used as it is, the hydrogen will dilute the lower hydrocarbons, thereby failing to obtain an industrially sufficient reaction effect.

Method used

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  • Method for producing aromatic compound and method for producing hydrogenated aromatic compound
  • Method for producing aromatic compound and method for producing hydrogenated aromatic compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] Use coal gasification gas (H 2 , CO, CO 2 , N 2 ) And coke oven gas (H 2 , CH 4 , CO, CO 2 , N 2 ) As the raw material gas supplied from outside, according to figure 1 The flow chart shown is for the continuous production of aromatic compounds. The coke oven gas is used after pretreatment of desulfurization, de-tarring, and de-dusting according to the usual methods.

[0135] Furthermore, the aromatic compound synthesis catalyst was prepared according to the method of Example 2 of JP 2005-255605. That is, as the catalyst raw material, inorganic component: organic binder: water=65.4:13.6:21.0 (weight ratio), and the inorganic component is SiO 2 / Al 2 O 3 (Molar ratio) = 40 ZSM-5 zeolite (MFI type zeolite): clay: glass fiber = 82.5:10.5:7.0 (weight ratio) mixture. First, the catalyst raw materials are kneaded into a molded body, and then dried at 100°C for 5 hours, and then calcined at 750°C. Next, the obtained sintered body was immersed in an ammonium molybdate aqueous solu...

Embodiment 2

[0163] Use coke oven gas (H 2 , CH 4 , CO, CO 2 , N 2 ) As raw material gas supplied from outside, follow figure 2 The flow chart shown is for the continuous production of aromatic compounds. The coke oven gas is used after pretreatment of desulfurization, de-tarring, and de-dusting according to the usual methods.

[0164]

[0165] In the methanation step (C), the coke oven gas is supplied from line (1), and the recycled gas (gas containing methane and hydrogen) from the aromatic compound separation step (B) described later is supplied from line (8). , Supply carbon dioxide from line (13). The condition of the methanation process (C) is pressure: 10kg / cm 2 , Temperature (inlet): 280℃, GHSV: 300h -1 . The composition of the gas supplied to the methanation step and the composition of the gas (methane-containing gas) generated in the methanation step (composition after cooling to 40°C with a cooler and separating condensate) are shown in Table 6.

[0166] Table 6

[0167]

Gas s...

Embodiment 3

[0182] Use coke oven gas (H 2 , CH 4 , CO, CO 2 , N 2 ) And the mixed gas of carbon dioxide recovered from the combustion exhaust gas as the raw material gas supplied from the outside, according to figure 2 The flow chart shown is for the continuous production of aromatic compounds. The coke oven gas is used after pretreatment of desulfurization, de-tarring, and de-dusting according to the usual methods.

[0183]

[0184] In the methanation step (C), the coke oven gas is supplied from the line (3), and the recycled gas (lower hydrocarbons and hydrogen-containing gas from the aromatic compound separation step (B) described later is supplied from the line (8). ). Supply carbon dioxide from line (13), and supply recycled gas (lower hydrocarbons and hydrogen-containing gas) from the hydrogenated aromatic compound separation step (G) described later from line (18). These gases are all supplied to the methanation step (C) via the line (1). The condition of the methanation process (C...

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Abstract

Disclosed is an industrially advantageous process for producing an aromatic compound by means of a catalytic reaction of a lower hydrocarbon. The process comprises: a methanization step where a hydrogen-containing gas is allowed to contact with carbon monoxide and / or carbon dioxide in the presence of a catalyst to cause the reaction of the hydrogen in the gas with carbon monoxide and / or carbon dioxide, thereby converting these components into methane and water; and an aromatic compound synthesis step where a lower hydrocarbon is reacted with methane produced in the methanization step in the presence of a catalyst to generate a gaseous product containing an aromatic compound and hydrogen.

Description

[0001] This application is a divisional application with the filing date of February 10, 2006, the application number being 200680004024.8, and the title of the invention being "the production method of aromatic compounds and the production method of hydrogenated aromatic compounds". Technical field [0002] The present invention relates to a method for producing an aromatic compound, and in particular, to a method for producing an aromatic compound using a catalytic reaction of lower hydrocarbons such as methane, which is advantageous for industrial production. In addition, it also relates to a method for producing a hydrogenated aromatic compound obtained by hydrogenating the aromatic compound obtained in the present invention. Background technique [0003] For the production of aromatic compounds that utilize the catalytic reaction of lower hydrocarbons such as methane, many proposals have been made regarding catalyst improvements (Patent Documents 1 to 7). [0004] Patent Docume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/76C07C15/04
CPCC07C2/76C07C15/04Y02P20/582
Inventor 桑名弘通赤井一隆高桥和成内海史尊
Owner MITSUBISHI RAYON CO LTD
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