Method for preparing bio-oil through co-pyrolysis catalytic hydrogenation by means of algae and waste rubber

A waste rubber, catalytic hydrogenation technology, applied in the direction of refining hydrocarbon oil, petroleum industry, processing hydrocarbon oil, etc., can solve the problem of little research on co-pyrolysis of algae biomass as raw material, and achieve the goal of alleviating the increasing shortage and reducing oxygen The effect of content

Inactive Publication Date: 2016-03-23
JIANGSU UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the biomass raw materials used in the research work on the co-pyrolysis of biomass and waste rubber are mainly concentrated on woody biomass such as straw and sawdust, while there is little research on the co-pyrolysis of algae biomass as raw materials.

Method used

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  • Method for preparing bio-oil through co-pyrolysis catalytic hydrogenation by means of algae and waste rubber
  • Method for preparing bio-oil through co-pyrolysis catalytic hydrogenation by means of algae and waste rubber
  • Method for preparing bio-oil through co-pyrolysis catalytic hydrogenation by means of algae and waste rubber

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Embodiment 1

[0027] (1) Crush the chlorella and waste rubber tires into particles with a particle size of 1 mm and mix them evenly, and dry them in an electric blast drying oven for 24 hours, and control the moisture content below 5%;

[0028] (2) Using nitrogen as the carrier gas and quartz sand as the heat carrier, send the mixed material into the fluidized bed reactor for co-pyrolysis, the reaction temperature is 500°C, and the gas residence time is 2s;

[0029] (3) Cyclone separate the biomass pyrolysis steam with solid carbon residue, and then use spray cooling to condense the pyrolysis steam into crude bio-oil at about 300°C, and use it for dehydration treatment;

[0030] (4) Put the crude bio-oil after water removal and the HZSM-5 molecular sieve catalyst with a silicon / aluminum ratio of 25 together in a thermal high-resolution catalytic hydrogenation device for catalytic hydrogenation modification. The reaction temperature is 300°C and the reaction pressure is 10MPa, the reaction t...

Embodiment 2

[0035] (1) Crush blue algae and waste rubber tires into particles with a particle size of 0.5 mm and mix them evenly, and dry them in an electric blast drying oven for 12 hours, and control the moisture content below 10%;

[0036] (2) Using nitrogen as the carrier gas and quartz sand as the heat carrier, send the mixed material into the fluidized bed reactor for co-pyrolysis, the reaction temperature is 550°C, and the gas residence time is 2s;

[0037] (3) Cyclone separate the biomass pyrolysis steam with solid carbon residue, and then use spray cooling to condense the pyrolysis steam into crude bio-oil at about 325°C, and use it for dehydration treatment;

[0038] (4) Put the crude bio-oil after water removal and the HZSM-5 molecular sieve catalyst with a silicon / aluminum ratio of 25 together in a thermal high-resolution catalytic hydrogenation unit for catalytic hydrogenation modification. The reaction temperature is 325°C and the reaction pressure is 5MPa, the reaction time...

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Abstract

The invention belongs to the fields of solid waste recycling technologies and biomass energy, and discloses a method for preparing bio-oil through co-pyrolysis catalytic hydrogenation by means of algae and waste rubber. The method comprises the steps that alga biomass and waste rubber are smashed, dried and mixed evenly, a co-pyrolysis reaction is performed on a fluidized bed by taking nitrogen gas as carrier gas and taking quartz sand as a heat carrier, obtained pyrolysis steam is condensed into crude bio-oil through spray cooling, catalytic hydrogenation modification is performed on the crude bio-oil and an HZSM-5 molecular sieve catalyst after water is removed, and spray cooling and water removing are performed to obtain the high-quality liquid bio-oil. According to the method, the synergistic effect based on the algae and the waste rubber is comprehensively utilized, oxygen in the bio-oil is removed in the forms of carbon dioxide and water by adopting catalytic hydrogenation, and therefore the quality of the bio-oil is improved; meanwhile, the waste rubber is high in hydrogen content and is a potential hydrogen source, and through co-pyrolysis between the waste rubber and the alga biomass, the oxygen content in the bio-oil can be significantly reduced, and the hydrogen using amount of a hot high-pressure separation catalytic hydrogenation device is indirectly decreased.

Description

technical field [0001] The invention relates to a method for preparing bio-oil through co-pyrolysis and catalytic hydrogenation of algae and waste rubber, which belongs to the field of solid waste recycling technology and biomass energy. Background technique [0002] In recent years, with the increasing shortage of fossil energy and related environmental problems caused by its development and utilization, the development and utilization of clean and renewable biomass energy has attracted widespread attention from scholars at home and abroad. Biomass resources come from a wide variety of sources, including forestry waste, agricultural waste, animal manure, sludge and various algae. Algal biomass has become one of the most potential raw materials due to its short growth cycle, easy reproduction, and no occupation of arable land. Pyrolysis technology is a process of rapid pyrolysis of biomass into liquid bio-oil, solid carbon residue and non-condensable gas under medium temper...

Claims

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Application Information

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IPC IPC(8): C10G1/10C10G45/12
CPCC10G1/10C10G45/12C10G2300/1003C10G2300/1014
Inventor 纪长浩何志霞徐贵生郭根苗
Owner JIANGSU UNIV
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