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Synthetic method of decahydronaphthalene

A synthesis method and technology of decahydronaphthalene, applied in the field of chemical engineering, can solve problems such as high energy consumption, high reaction pressure, and large equipment investment, and achieve reduction of reaction pressure, improvement of reaction safety, reduction of equipment investment and reaction energy consumption small effect

Inactive Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction pressure is high, energy consumption is large, and equipment investment is large

Method used

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  • Synthetic method of decahydronaphthalene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 50 grams of naphthalene, 150 grams of tetrahydronaphthalene, and 50 grams of platinum-molybdenum catalyst into a high-pressure stirred reactor. Under the conditions of reaction temperature 160°C and reaction pressure 2 MPa, the liquid hourly volume space velocity (LHSV) is 0.5, and the single-pass conversion rate of naphthalene up to 99.5%, decahydronaphthalene selectivity up to 99.5%, decahydronaphthalene yield up to 99.0%.

Embodiment 2

[0037] Add 50 grams of naphthalene, 150 grams of tetrahydronaphthalene and 50 grams of platinum-molybdenum catalyst into the high-pressure stirred reactor. Under the conditions of reaction temperature 160 ° C and reaction pressure 1 MPa, the liquid hourly volume space velocity (LHSV) is 0.5, and the single-pass conversion rate of naphthalene The decahydronaphthalene selectivity reaches 99.2%, the decahydronaphthalene selectivity reaches 99.5%, and the decahydronaphthalene yield reaches 98.7%.

Embodiment 3

[0039] Add 50 grams of naphthalene, 150 grams of tetrahydronaphthalene, and 50 grams of platinum-molybdenum catalyst into a high-pressure stirred reactor. Under the conditions of reaction temperature 180 ° C and reaction pressure 0.5 MPa, the liquid hourly volume space velocity (LHSV) is 0.5, and the one-way conversion of naphthalene The rate reaches 99.1%, the decahydronaphthalene selectivity reaches 99.5%, and the decahydronaphthalene yield reaches 98.6%.

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Abstract

The invention belongs to preparation of decahydronaphthalene by catalytic hydrogenation with naphthalene used as a raw material, specifically a one-step synthesis technology for preparing decahydronaphthalene by using tertralin as a solvent of the solid raw material naphthalene and adopting a platinum-molybdenum catalyst at low temperature and pressure in a reaction vessel, wherein reaction pressure is 0.1-0.5 MPa; reaction temperature is 100-180 DEG C; liquid hourly space velocity (LHSV) is 0.5; per-pass conversion rate of naphthalene reaches more than 99%; selectivity of decahydronaphthalene reaches more than 99%; and yield of decahydronaphthalene reaches more than 98%. The technology is advanced and operates stably and reliably.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering, and in particular relates to a synthesis method for preparing decahydronaphthalene by hydrogenating naphthalene under relatively low pressure and temperature conditions. technical background [0002] The method of hydrogenation of naphthalene to prepare decahydronaphthalene has been a lot of research work as early as seventy or eighty years ago, for example: J.Soc.Chem.Ing., 1927, 46.454; Rec.trav.chim., 1934, 53.821 report The reaction mechanism, process parameters and effects of various catalysts for the preparation of decahydronaphthalene by hydrogenation of naphthalene were studied. There are still many research reports this year, for example: Huang, Ting-Chia; Kang, Ben-Chang.Ind.Eng.Chem.Res., 34(4), 1140-8 and 34(7), 2349-57 , 1995.; Rautanen, P.A.; Aittamaa, J.R.; Krause, A.O.I.; Chem.Eng.Sci., 56(4), 1247-1254, 2001. et al. conducted a study on the reaction kinetics of hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/50C07C5/10
Inventor 张叶刘蓓孔凡敏苏豪季星翔
Owner CHINA PETROLEUM & CHEM CORP
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