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A method for hydrofining bio-crude oil using a high-temperature gas-cooled reactor

A bio-crude and hydrotreating technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of poor thermal stability, poor stability, high energy consumption and hydrogen consumption, etc., and achieve simplification Process flow, effect of improving water resistance and heat resistance

Active Publication Date: 2017-05-10
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] Although the thermochemical conversion of biomass and subsequent hydrofining of crude oil from biomass cracking have very obvious advantages, the product yield is high, and the quality of fuel oil obtained is good, but the disadvantage is that it needs to consume a lot of energy and hydrogen, and the cost is high.
However, the thermal stability of these mesoporous molecular sieves is very poor, usually not exceeding 200 ° C, and the stability is even worse when there is water, and the catalytic hydrotreating of crude oil from biomass cracking is usually performed at 300-400 ° C. Therefore, the preparation can simultaneously withstand Mesoporous molecular sieve materials that are resistant to high temperature and high moisture content are very important

Method used

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  • A method for hydrofining bio-crude oil using a high-temperature gas-cooled reactor
  • A method for hydrofining bio-crude oil using a high-temperature gas-cooled reactor

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Embodiment 1

[0059] Embodiment 1. In crude oil by biomass cracking, the oil phase is 75%, the water phase is 25%, the oxygen content of the oil phase is 30%, and the calorific value is 22MJ / kg. Bio-oil vapor and hydrogen (the mass ratio of the two is 100:7) are mixed and then enter the catalytic hydrogenation fixed-bed reactor 8. The hydrogenation reaction temperature is 350°C and the hydrogen pressure is 15MPa. The catalyst is mesoporous molecular sieve SBA-15 doped with Pt and added amino organic functional groups. The oil phase obtained after the hydrogenation reaction is completed and condensed and separated accounts for 80%, the oxygen content of the oil phase is 2.5%, the calorific value is 39MJ / kg, the gas phase accounts for 3%, and the rest is the water phase.

Embodiment 2

[0060] Embodiment 2, in bio-crude oil, the oil phase is 75% by mass, the water phase is 25%, the oxygen content of the oil phase is 30%, and the heat value is 22MJ / kg. Bio-oil vapor and hydrogen (the mass ratio of the two is 100:6) are mixed and then enter the catalytic hydrogenation fixed-bed reactor 8, the hydrogenation reaction temperature is 280°C, and the hydrogen pressure is 4MPa. The catalyst is mesoporous molecular sieve SBA-15 doped with Pd-Co and grafted with amino and carboxyl organic functional groups. The oil phase obtained after the hydrogenation reaction is completed and condensed and separated accounts for 80%, the oxygen content of the oil phase is 0.5%, the calorific value is 41.2MJ / kg, the gas phase accounts for 4%, and the rest is the water phase.

Embodiment 3

[0061] Embodiment 3, the mass ratio of bio-crude oil is 75%, the water phase is 25%, the oxygen content of the oil phase is 30%, and the calorific value is 22MJ / kg. Bio-oil vapor and hydrogen (the mass ratio of the two is 100:9) are mixed and then enter the catalytic hydrogenation fixed-bed reactor 8. The hydrogenation reaction temperature is 320°C and the hydrogen pressure is 10MPa. The catalyst is mesoporous molecular sieve SBA-15 doped with Pt-Ni and grafted amino and sulfonic acid organic functional groups at the same time. The oil phase obtained after the hydrogenation reaction is completed and condensed and separated accounts for 80%, the oxygen content of the oil phase is 1.5%, the calorific value is 40MJ / kg, the gas phase accounts for 5%, and the rest is the water phase.

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Abstract

The invention discloses a waterproof and heatproof hydrogenation catalyst. The catalyst is a meso-porous molecular sieve SBA-15 doped with active metal and grafted with an organic functional group, wherein the doped active metal is one or more of Pt, Pd, Zr, Ru, Ni, Co and Mo, and the grafted organic functional group is one or more of an amino group, a carboxyl group and a sulfonyl group. The invention also discloses a method for hydrofinishing biological crude oil by using a high temperature gas cooled reactor. The method comprises the following steps: heating second helium flow with high temperature helium from the core of the high temperature gas cooled reactor, driving a thermochemical circulating hydrogen production process by the second helium flow, preheating and gasifying total components of the oil phase and the water phase of biological crude oil by the second helium flow to form biological crude oil steam, and hydrofinishing the biological crude oil steam and prepared hydrogen under the action of the catalyst to obtain biofuel oil and a non-condensable fuel gas.

Description

technical field [0001] The invention relates to a method for hydrofining all components of biological crude oil (including organic components in oil phase and water phase) by using a high-temperature air-cooled nuclear reactor, and belongs to the field of utilizing nuclear energy and the field of renewable biomass energy. Background technique [0002] Energy and the environment are the two major themes of human development. Currently, fossil energy reserves are limited and gradually exhausted, and the use of fossil energy has brought serious environmental pollution. Therefore, the development of renewable energy can help reduce dependence on fossil resources, which is of great significance. The energy consumption of my country's transportation industry is huge, and it is increasing year by year. It currently accounts for more than 20% of the total energy consumption of the society, and it is expected to reach 1 / 3 of the same level as developed countries in recent years. Comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/035
Inventor 吴玉龙王建龙张作义陈镇李富陈宇杨明德吴宗鑫张平
Owner TSINGHUA UNIV