Process for production of aromatic compound and process for production of hydrogenated aromatic compound

A technology for aromatic compounds and production methods, applied in organic chemical methods, hydrocarbon production from carbon oxides, condensation hydrocarbon production with dehydrocarbons, etc., can solve problems such as inability to obtain reaction effects

Active Publication Date: 2008-01-30
MITSUBISHI RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Process for production of aromatic compound and process for production of hydrogenated aromatic compound
  • Process for production of aromatic compound and process for production of hydrogenated aromatic compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] Using 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 the outside, according to the flow chart shown in Figure 1, aromatic compounds are produced continuously. The coke oven gas is used after pretreatment of desulfurization, detarring and dedusting according to the usual method.

[0134] Furthermore, the aromatic compound synthesis catalyst was prepared according to the method in Example 2 of Japanese Patent Laid-Open No. 2005-255605. That is, as the catalyst raw material, use 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 material was kneaded to form a molded body, and then, after drying at 100°C for 5 hours, it was calcined at 750°C. Next, the obtained sintered body was im...

Embodiment 2

[0161] Using coke oven gas (H 2 、CH 4 , CO, CO 2 , N 2 ) as a raw material gas supplied from the outside, according to the flowchart shown in FIG. 2 , aromatic compounds are continuously produced. The coke oven gas is used after pretreatment of desulfurization, detarring and dedusting according to the usual method.

[0162]

[0163] In the methanation step (C), the coke oven gas is supplied from the line (1), and the recycled gas (gas containing methane and hydrogen) from the aromatic compound separation step (B) described later is supplied from the line (8). , Carbon dioxide is supplied from line (13). The condition of methanation process (C) is pressure: 10kg / cm 2 , Temperature (inlet): 280°C, GHSV: 300h -1 . Table 6 shows the composition of the gas supplied to the methanation step and the composition of the gas (methane-containing gas) produced in the methanation step (composition after cooling to 40° C. with a cooler and separating condensed water).

[0164] Tabl...

Embodiment 3

[0178] Using coke oven gas (H 2 、CH 4 , CO, CO 2 , N 2) and carbon dioxide recovered from the combustion exhaust gas as the raw material gas supplied from the outside, according to the flow chart shown in Figure 2, aromatic compounds are produced continuously. The coke oven gas is used after pretreatment of desulfurization, detarring and dedusting according to the usual method.

[0179]

[0180] 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). ), carbon dioxide is supplied from the line (13), and recycled gas (lower hydrocarbons and hydrogen-containing gas) from the hydrogenated aromatic compound separation step (G) described later is supplied from the line (18). These gases are all supplied to the methanation process (C) via the line (1). The condition of methanation process (C) ...

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Abstract

The present invention provides a method for producing aromatic compounds using a catalytic reaction of lower hydrocarbons that is advantageous for industrial production. The method for producing aromatic compounds includes a methanation step and an aromatic compound synthesis step. The methanation step is to contact hydrogen-containing gas with carbon monoxide and / or carbon dioxide in the presence of a catalyst, so that the hydrogen in the gas reacts with carbon monoxide. and / or react with carbon dioxide to convert into methane and water; the aromatic compound synthesis process is to react lower hydrocarbons with the methane obtained in the methanation process in the presence of a catalyst to obtain a product containing aromatic compounds and hydrogen gas.

Description

technical field [0001] The present invention relates to a method for producing an aromatic compound, and in particular, relates to a method for producing an aromatic compound utilizing a catalytic reaction of lower hydrocarbons such as methane, which is advantageous for industrial production. Moreover, it also relates to the manufacturing method of the hydrogenated aromatic compound which hydrogenated the aromatic compound obtained by this invention. Background technique [0002] For the production of aromatic compounds utilizing the catalytic reaction of lower hydrocarbons such as methane, many proposals concerning improvement of catalysts have been proposed (Patent Documents 1 to 7). [0003] Patent Document 1: Japanese Unexamined Patent Application Publication No. H10-272366 [0004] Patent Document 2: Japanese Unexamined Patent Publication No. 11-60514 [0005] Patent Document 3: JP-A-2001-334151 [0006] Patent Document 4: JP-A-2001-334152 [0007] Patent Document 5...

Claims

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Application Information

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IPC IPC(8): C07C15/04C07C2/84C07C1/04C07C1/12C07C9/04C07B61/00
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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