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Method for catalyzing hydrodeoxygenation to prepare hydrocarbon through guaiacol

A technology of guaiacol and catalytic deoxygenation, which is applied in the preparation of liquid hydrocarbon mixtures, the petroleum industry, biological raw materials, etc., can solve the problems of harsh reaction conditions, catalyst deactivation production costs, etc., and achieve low production costs and reduce oxygen content Productivity of similar substances, the effect of conventional and simple equipment

Active Publication Date: 2015-10-28
邳州市成旺农业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcome the shortcomings of harsh reaction conditions, catalyst deactivation and high production costs in the prior art

Method used

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  • Method for catalyzing hydrodeoxygenation to prepare hydrocarbon through guaiacol
  • Method for catalyzing hydrodeoxygenation to prepare hydrocarbon through guaiacol
  • Method for catalyzing hydrodeoxygenation to prepare hydrocarbon through guaiacol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) 15g guaiacol and 15g n-butanol are mixed homogeneously, stand-by;

[0026] (2) Fill 30g of catalyst HZSM-5 molecular sieve into the tubular fixed-bed reactor, and fix it with a screen, so that all the catalysts are in the constant temperature section of the reactor, and then evenly lay 10g of quartz on the upper layer of the catalyst sand;

[0027] (3) Seal the fixed bed reactor and place it in the electric heating jacket. The insulation jacket has both heating and heat preservation functions. After the electric heating jacket is turned on to heat the reactants in the fixed bed reactor to 550°C, the peristaltic pump at 0.68h -1 The mass space velocity transports the mixed solution obtained in step (1) to the fixed-bed reactor, and after the addition is completed, the insulation reaction is continued for 0.5 hours. During the reaction process, a serpentine condenser tube is used to condense the reaction product, the non-condensable gas is collected into the gas col...

Embodiment 2

[0035] (1) 15g guaiacol and 30g n-amyl alcohol are mixed evenly, stand-by;

[0036] (2) Fill 15g of catalyst HZSM-5 molecular sieve into the tubular fixed bed reactor, and fix it with a screen, so that all the catalysts are in the constant temperature section of the reactor, and then evenly lay 18g of quartz on the upper layer of the catalyst sand;

[0037] (3) Seal the fixed bed reactor and put it in the electric heating jacket. The insulation jacket has both heating and heat preservation functions. After the electric heating jacket is turned on to heat the reactants in the fixed bed reactor to 500°C, the peristaltic pump at 0.4h -1 The mass space velocity is used to transport the mixed solution obtained in step (1) to the fixed bed reactor, after the addition is completed, continue the heat preservation reaction for 0.8 hours. During the reaction process, a serpentine condenser tube is used to condense the reaction product, the non-condensable gas is collected into the gas...

Embodiment 3

[0040] (1) 20g of guaiacol and 10g of n-butanol are mixed evenly and set aside;

[0041] (2) Fill 24g of catalyst HZSM-5 molecular sieve into the tubular fixed bed reactor, and fix it with a screen, so that all the catalysts are in the constant temperature section of the reactor, and then evenly lay 15g of quartz on the upper layer of the catalyst sand;

[0042] (3) Seal the fixed bed reactor and place it in the electric heating jacket. The insulation jacket has both heating and heat preservation functions. After the electric heating jacket is turned on to heat the reactants in the fixed bed reactor to 600°C, the peristaltic pump for 1.5h -1 The mass space velocity transports the mixed solution obtained in step (1) to the fixed-bed reactor, and after the addition is completed, continue the heat preservation reaction for 1 hour. During the reaction process, a serpentine condenser tube is used to condense the reaction product, the non-condensable gas is collected into the gas ...

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Abstract

The invention provides a method for catalyzing hydrodeoxygenation to prepare hydrocarbon through guaiacol. Mixtures of guaiacol and alcohol are used as raw materials, under the catalytic action of a HZSM-5 molecular sieve at the temperature of 500 to 600 DEG C, the raw materials are added into a fixed bed reactor through a peristaltic pump to generate a gas-solid catalytic cracking reaction, the reaction is conducted continuously for 0.5 to 1 h while the temperature is maintained after raw material adding is completed, condensation treatment is conducted on a reaction product through a condenser pipe in the reacting process, condensed fluid and non-condensable gases are collected respectively, stewing and layering are conduced on a condensed fluid product, aqueous phase and oil phase are collected respectively, and a product namely the hydrocarbon substance is in the oil phase; the alcohol is one of n-butyl alcohol, n-amyl alcohol or hexyl alcohol. The preparation method has the advantages that the reaction condition is mild, the equipment is normal and simple, the service life of catalyst is long, the production cost is low, and the preparation method is suitable for industrial production; the conversion rate of the guaiacol reaches up to 100%, the recovery rate of the hydrocarbon substance reaches up to 20.68%, the moisture content of the oil phase is 1.37%, the calorific value reaches up to 40882J / g, and the oil phase quality is high.

Description

technical field [0001] The invention relates to a method for preparing hydrocarbons through efficient deoxygenation and hydrogenation of guaiacol, which belongs to the technical field of biomass utilization. Background technique [0002] Biomass in agricultural and forestry waste undergoes rapid pyrolysis and rapid cooling to obtain a black viscous liquid with pungent odor—pyrolysis oil, commonly known as bio-oil. Bio-oil is considered to be one of the best alternative liquid fuels in current renewable energy, but compared with traditional fossil fuels, it suffers from high water content (40-65%, mass fraction) and high oxygen content (35-60% , mass fraction), low calorific value, high viscosity, strong corrosion and poor stability, it is difficult to be directly applied, and it must be refined and modified. The chemical composition of bio-oil is very complex, and guaiacol and its derivatives are the components with relatively high content. How to use it as a model compound...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 于凤文毛陈宋锵胡敏胡士奇雷同计建炳
Owner 邳州市成旺农业发展有限公司
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