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Method for synthesizing liquefied petroleum gas and BTX aromatics by butyl alcohol

A technology for liquefied petroleum gas and mixed aromatic hydrocarbons, which is used in the preparation of liquid hydrocarbon mixtures, chemical instruments and methods, and the petroleum industry.

Inactive Publication Date: 2013-06-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw materials used in high-temperature carbonization of coal, hydrocarbon cracking, catalytic reforming, aromatization of low-carbon alkanes, aromatization of liquefied gas and methanol to gasoline are all disposable and non-renewable fossil raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take SiO 2 / Al 2 o 3 70 ZSM-5 molecular sieve, fully ground, at 500 o C for 3 h, then ammonium nitrate solution at 80-90 o C was exchanged 3 times, and then washed three times with deionized water until the Na content was lower than 0.05% (mass percentage), 120 o C after drying, 500 o C was calcined for 3 h to prepare catalyst A.

Embodiment 2

[0021] Take SiO 2 / Al 2 o 3 85 ZSM-5 molecular sieve, fully ground, at 500 o C for 3 h, then ammonium nitrate solution at 80-90 oC was exchanged 3 times, and then washed three times with deionized water until the Na content was lower than 0.05% (mass percentage), 120 o C after drying, 500 o C roasting for 3 h. Introduce 5.0% zinc element by impregnating zinc nitrate solution. Weigh a certain amount of zinc nitrate in a beaker, then add deionized water, dissolve and add molecular sieves exchanged with ammonium nitrate, the solid-to-liquid ratio is 1:5, stir magnetically at room temperature for 8 h, then stir at 60-80 o C drying in the oven for 24 h, after drying in the muffle furnace for 600 o C for 4 h to prepare the catalyst B.

Embodiment 3

[0023] Take SiO 2 / Al 2 o 3 30 ZSM-5 molecular sieve, fully ground, at 450 o C for 3 h, then ammonium nitrate solution at 80-90 o C was exchanged 3 times, and then washed three times with deionized water until the Na content was lower than 0.05% (mass percentage), 120 o After drying at C, 450 o C was calcined for 5 h to prepare catalyst C.

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Abstract

The invention provides a method for synthesizing liquefied petroleum gas and BTX aromatics by butyl alcohol. The method for synthesizing the liquefied petroleum gas and the BTX aromatics by the butyl alcohol comprises the steps that butyl alcohol raw materials or mixed reaction raw materials of butyl alcohol raw materials and nitrogen are put into a reaction area; the reaction raw materials are converted into a liquid-phase aromatic hydrocarbon compound rich in benzene, methylbenzene and dimethylbenzene under the action of catalytic agents and through dehydration reaction and polymerization and aromatization reaction; the liquid-phase aromatic hydrocarbon compound is converted into a liquefied petroleum gas component rich in dimethylmethane, hydride butyl and iso-butane through hydrogen transfer and cleavage reaction; and the liquid-phase aromatic hydrocarbon compound and the liquefied petroleum gas component are recovered through gas-liquid separation. According to the method for synthesizing the liquefied petroleum gas and the BTX aromatics by the butyl alcohol, non-fossil resources are adopted as raw materials, the aromatic hydrocarbon compound (the benzene, the methylbenzene and the dimethylbenzene) is produced under the condition that the catalytic agents exist, and dependence on disposable consumption of fossil raw materials (hydrocarbon, naphtha, and diesel oil) is reduced for the production of the aromatic hydrocarbon compound.

Description

technical field [0001] The invention belongs to the field of producing liquid-phase aromatic hydrocarbon compounds and gas-phase liquefied petroleum gas products (LPG), in particular to a method for synthesizing liquefied petroleum gas and mixed aromatics from butanol. Background technique [0002] At present, the production of aromatic hydrocarbons is obtained from fossil resources such as coal or petroleum through three reaction processes: coal high-temperature dry distillation, hydrocarbon cracking, and catalytic reforming; especially the latter two processes that use petroleum hydrocarbons as raw materials. Aromatic hydrocarbons account for more than 90% of the world's total production of aromatic hydrocarbons. Among them, in the process of cracking ethane and propane as raw materials to produce ethylene, 2-5% (mass) of pyrolysis gasoline is produced by-product, and pyrolysis gasoline is rich in about 50-70% (mass) of aromatic compounds; When oil and light diesel are us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00B01J29/40B01J29/70B01J29/08C07C15/04C07C15/06C07C15/08C07C1/20
CPCY02P30/20Y02P20/52
Inventor 徐龙伢于丽丽黄声骏张爽刘珍妮谢素娟
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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