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Method for synthesizing light aromatic hydrocarbon and liquefied petroleum gas from low carbon number oxygen-containing compound mixed raw material

A technology of liquefied petroleum gas and mixed raw materials, which is applied in the direction of hydrocarbon production from oxygen-containing organic compounds, petroleum industry, fuel, etc., to achieve the effect of simple preparation method and reduced dependence

Active Publication Date: 2013-03-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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

Method used

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  • Method for synthesizing light aromatic hydrocarbon and liquefied petroleum gas from low carbon number oxygen-containing compound mixed raw material
  • Method for synthesizing light aromatic hydrocarbon and liquefied petroleum gas from low carbon number oxygen-containing compound mixed raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Take SiO 2 / Al 2 o 3 68 ZSM-5 molecular sieve, fully ground, roasted at 540 ° C for 3 hours, then exchanged with ammonium nitrate solution at 80-90 ° C for 3 times, and then washed with deionized water three times until the Na content is less than 0.05% (mass percentage), after 120 DEG C of drying, 550 DEG C of calcining 3h, make catalyst A.

Embodiment 2

[0023] Take SiO 2 / Al 2 o 3 27 ZSM-5 molecular sieves, fully ground, roasted at 530 ° C for 3 hours, then exchanged with ammonium nitrate solution at 80-90 ° C for 3 times, and then washed with deionized water three times until the Na content is less than 0.05% (mass percentage), after drying at 120°C, roasting at 530°C for 3h. Introduce 2.5% zinc element by impregnating zinc nitrate solution. Weigh a certain amount of zinc nitrate in a beaker, then add deionized water, dissolve and add ammonium nitrate-exchanged molecular sieves, the solid-to-liquid ratio is 1:20, stir magnetically at room temperature for 8 hours, then place in a 60-80°C oven After drying for 24 hours in a muffle furnace at 500° C. for 4 hours, catalyst B was obtained.

Embodiment 3

[0025] Take SiO 2 / Al 2 o 3 80 ZSM-5 molecular sieve, fully ground, roasted at 550°C for 3 hours, then exchanged with ammonium nitrate solution at 80-90°C for 3 times, and then washed with deionized water three times until the Na content is less than 0.05% (mass percentage), after 120 DEG C of drying, 550 DEG C of roasting 5h, make catalyst C.

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Abstract

A method for synthesizing light aromatic hydrocarbon and liquefied petroleum gas from low carbon number oxygen-containing compound mixed raw material. The method comprises steps of: preheating and vaporizing low carbon number oxygen-containing compound mixed raw material, and sending the material into a reactor; under the effect of catalyst, conversing the reaction material into liquid aromatic hydrocarbons rich in benzene, toluene and xylene, through a dehydration reaction, polymerization and an aromatization reaction; conversing the liquid aromatic hydrocarbons into a liquefied petroleum component rich in propane, butane and isobutane through hydrogen transfer and a cracking reaction; conversing the liquid aromatic hydrocarbons into a liquefied petroleum component rich in propane, butane and isobutane through hydrogen transfer and a cracking reaction; The invention provides a novel method, which employs low carbon number oxygen-containing compound from biomass and renewable resource as a raw material to produce aromatic compounds (benzene, toluene and xylene) under the effect of the catalyst, and aims to reduce dependence of aromatic hydrocarbon production on fossil fuels.

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 light aromatic hydrocarbons and liquefied petroleum gas from mixed raw materials of low-carbon oxygen-containing compounds. Background technique [0002] Aromatics are important basic organic chemical raw materials, especially light aromatics represented by benzene and xylene are raw materials for the manufacture of various synthetic resins, synthetic rubbers, and synthetic fibers, and play an extremely important role in the national economy. Aromatics can be derived from the coal processing process. A variety of aromatics can be produced during the coal dry distillation process, and aromatics such as benzene, toluene, naphthalene, and anthracene are successively separated from the coal tar obtained by coal dry distillation. However, more than 90% of the world's tota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C15/02C10L3/12
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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