Two-step method for preparing olefin and aromatic hydrocarbon by catalyzing and upgrading bio-oil

A bio-oil and aromatic hydrocarbon technology, applied in chemical instruments and methods, hydrocarbon production from oxygen-containing organic compounds, physical/chemical process catalysts, etc., can solve the problems of too fast catalyst deactivation and low yield of hydrocarbons, etc. Achieve the effect of improving stability and improving economy

Inactive Publication Date: 2011-05-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The present invention aims to overcome the problems of low yield of hydrocarbons and too fast catalyst deactivation in the existing bio-oil upgrading method, and propose a bio-oil upgrading with high olefin and aromatic hydrocarbon yield and high catalyst stability method

Method used

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  • Two-step method for preparing olefin and aromatic hydrocarbon by catalyzing and upgrading bio-oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) The water-phase bio-oil is continuously injected into the selective hydrogenation reactor with a high-pressure pump, and the mass space velocity is 3h -1 , a single catalyst bed is used for catalysis, Ru / C is the catalyst, hydrogen is the carrier gas, the temperature is 125°C, and the pressure is 5.2MPa. After the test, the hydrogenation liquid product is collected.

[0023] (2) The hydrogenation product is injected into the zeolite catalytic reactor with an atmospheric pump, and the mass space velocity is 11.7h -1 , HZSM-5 was used as the catalyst, helium was used as the carrier gas, and the temperature was 600 °C. The collected product was analyzed by GC / MS and GC-TCD / FID, and the carbon yield of the product is shown in Table 1 (working condition 1).

Embodiment 2

[0025] (1) The water-phase bio-oil is continuously injected into the selective hydrogenation reactor with a high-pressure pump, and the mass space velocity is 3h -1 , The catalysis adopts double catalyst bed. The water-phase bio-oil first passes through a bed composed of Ru / C catalyst, and the operating conditions of the bed are as follows: hydrogen is the carrier gas, the temperature is 125°C, and the pressure is 10MPa. Then it passes through a bed composed of Pt / C catalyst. The operating conditions of the bed are as follows: hydrogen is the carrier gas, the temperature is 250°C, and the pressure is 10MPa. After the test, the hydrogenation liquid product is collected.

[0026] (2) The hydrogenation product is injected into the zeolite catalytic reactor with an atmospheric pump, and the mass space velocity is 11.7h -1 , HZSM-5 was used as the catalyst, helium was used as the carrier gas, and the temperature was 400 °C. The collected product was analyzed by GC / MS and GC-TCD / F...

Embodiment 3

[0028] (1) The water-phase bio-oil is continuously injected into the selective hydrogenation reactor with a high-pressure pump, and the mass space velocity is 3h -1 , The catalysis adopts double catalyst bed. The water-phase bio-oil first passes through a bed composed of Ru / C catalyst, and the operating conditions of the bed are as follows: hydrogen is the carrier gas, the temperature is 125°C, and the pressure is 10MPa. Then it passes through a bed composed of Pt / C catalyst. The operating conditions of the bed are as follows: hydrogen is the carrier gas, the temperature is 250°C, and the pressure is 10MPa. After the test, the hydrogenation liquid product is collected.

[0029] (2) The hydrogenation product is injected into the zeolite catalytic reactor with an atmospheric pump, and the mass space velocity is 11.7h -1 , HZSM-5 was used as the catalyst, helium was used as the carrier gas, and the temperature was 600 °C. The collected product was analyzed by GC / MS and GC-TCD / F...

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Abstract

The invention discloses a two-step method for preparing olefin and aromatic hydrocarbon by catalyzing and upgrading bio-oil. Aqueous-phase bio-oil serves as a raw material, and the method comprises the following steps of: performing selective hydrogenation the aqueous-phase bio-oil, converting into stable compounds, and performing zeolite catalytic conversion on the stable compounds to obtain hydrocarbon compounds, wherein the selective hydrogenation is performed in a pressurized reactor, and the reaction conditions are that: the reaction atmosphere is hydrogen, a Ru / C and a Pt / C are catalysts, the temperature is between 100 and 300 DEG C, the mass space velocity is 1 to 5h<-1>, and the pressure is 5 to 15 MPa; the zeolite catalysis is performed in a normal pressure reactor, and the reaction conditions are that: the reaction atmosphere is hydrogen or nitrogen, the catalyst is HZSM-5, the temperature is between 350 and 650 DEG C, and the mass space velocity is 5 to 50h<-1>. The obtained olefin and aromatic hydrocarbon have the carbon yield of 30.3 to 50.8 percent and 18.4 to 26.8 percent respectively, and the catalysts for hydrogenation and zeolite catalysis have high stability.

Description

technical field [0001] The invention is a two-step bio-oil catalytic upgrading method for producing olefins and aromatics, and relates to the field of biomass conversion into petrochemical products. Background technique [0002] Olefins and aromatic hydrocarbons are chemical raw materials for the preparation of plastics, rubber, fibers, films and coatings, which are essential for national construction and people's daily life. Among them, ethylene production is a symbol to measure the development level of a country's petrochemical industry. 75% of the world's petrochemical products are produced from ethylene. Currently, almost all olefin and aromatic chemicals are derived from petroleum refining. With the depletion of petroleum resources, the continuous improvement of people's living standards and the gradual emphasis on environmental pollution, it is of great significance to find new alternative energy sources to prepare important chemical raw materials such as olefins and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C11/04C07C11/06C07C11/08C07C15/04C07C15/08C07C15/073C07C15/46C07C13/465C07C15/24B01J23/46B01J29/40
CPCY02P20/52Y02P30/20Y02P30/40
Inventor 张会岩肖睿
Owner SOUTHEAST UNIV
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