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Catalytic pyrolysis method of biomass and/or coal

A biomass and catalyst technology, applied in the field of catalytic pyrolysis of biomass and/or coal, can solve problems such as control of unfavorable conditions, and achieve the effects of optimizing conversion conditions, simple process, and simplifying component composition

Inactive Publication Date: 2016-11-23
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Although the above two methods are for catalytic pyrolysis of biomass, neither of them involves the control of the composition of alkylphenols and alkoxyphenols in pyrolysis tar, so it is impossible to avoid the alkanes in biomass and / or coal pyrolysis products. The separation of base phenols and alkoxy phenols is difficult, which is not conducive to the condition control of downstream conversion reactions using tar or phenol oil as raw materials

Method used

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  • Catalytic pyrolysis method of biomass and/or coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Catalyst preparation: 28ml K 3 PO 4 Add the saturated aqueous solution of 20g of γ-Al with a particle size of 1-2mm dropwise 2 o 3 On the granules, the dropwise addition is completed and dried naturally for 24 hours, then dried at 125°C for 12 hours, then transferred to a muffle furnace for 700°C roasting for 8 hours, and cooled in a desiccator to obtain γ-Al 2 o 3 potassium salt catalyst.

[0037] Catalytic pyrolysis of biomass and / or coal: put 15g of pine wood powder with a particle size of less than 2mm into the first constant temperature zone 4 of the fixed bed reactor, and place 15g of catalyst in the second constant temperature zone 6 of the fixed bed reactor, and pyrolyze the obtained The high-temperature gas-phase product flows out from the outlet of the tubular reactor and enters the low-temperature condensation unit 7, where it is cooled and collected in a liquid phase. The heating rate is 20°C / min, the temperature in the first constant temperature zone 4...

Embodiment 2

[0039] Catalyst preparation: 30ml KH 2 PO 4 Add the saturated aqueous solution of 20g of γ-Al with a particle size of 1-2mm dropwise 2 o 3 On the granules, the dropwise addition is completed and dried naturally for 12 hours, then dried at 140°C for 8 hours, then transferred to a muffle furnace for 800°C roasting for 9 hours, and cooled in a desiccator to obtain γ-Al 2 o 3 potassium salt catalyst.

[0040] Catalytic pyrolysis of biomass and / or coal: put 15g of rice husks with a particle size of less than 1mm into the first constant temperature zone 4 of the fixed bed reactor, and place 15g of catalyst in the second constant temperature zone 6 of the fixed bed reactor, and pyrolyze the obtained The high-temperature gas-phase product flows out from the outlet of the tubular reactor and enters the low-temperature condensation unit 7, where it is cooled and collected in a liquid phase. The heating rate is 9°C / min, the temperature in the first constant temperature zone 4 is con...

Embodiment 3

[0042] Catalyst preparation: 30ml Na 2 HPO 4 Add the saturated aqueous solution of 20g of γ-Al with a particle size of 1-2mm dropwise 2 o 3 On the granules, the dropwise addition is completed and dried naturally for 24 hours, then dried at 150°C for 10 hours, then transferred to a muffle furnace for 600°C and roasted for 10 hours, and cooled in a desiccator to obtain γ-Al 2 o 3 sodium salt catalyst.

[0043] Catalytic pyrolysis of biomass and / or coal: Put 20g of Huolinhe coal with particle size less than 1.5mm into zone 4 of the first constant temperature zone of the fixed bed reactor, and place 5g of catalyst in the second constant temperature zone 6 of the fixed bed reactor , The high-temperature gas-phase product obtained by pyrolysis flows out from the outlet of the tubular reactor and enters the low-temperature condensation unit 7, and is cooled to become a liquid phase and collected. The heating rate is 30°C / min, the temperature in the first constant temperature zon...

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Abstract

The invention relates to a catalytic pyrolysis method of biomass and coal. The method comprises steps as follows: biomass and / or coal and a catalyst are placed in a temperature-constant area of a fixed bed reactor, the catalyst is placed in the downstream position of the biomass and / or coal, a catalyst bed layer is formed, a gaseous product produced in a pyrolytic reaction of the biomass and / or coal, at the temperature higher than or equal to 400 DEG C flows through the catalyst bed layer to be subjected to a catalytic reaction, and a gaseous product and an aqueous product are obtained through condensation and separation of a product of the catalytic reaction. The biomass and / or coal and the catalyst are placed in different temperature control areas (or the same temperature control area) of the fixed bed reactor, the efficient catalyst is adopted, the catalytic pyrolysis reaction is performed, the content of alkylphenol in tar can be significantly increased, and the content of alkoxy phenol can be significantly decreased; the component composition of phenols in tar obtained through pyrolysis of the biomass and / or coal is simplified, optimization of downstream reaction conversion conditions with tar or phenol oil used as raw materials is facilitated, and the quality of products with tar or phenol oil used as raw materials is further improved.

Description

technical field [0001] The invention belongs to the field of energy catalytic pyrolysis reaction, relates to a method for catalytic pyrolysis of biomass and / or coal, in particular to a method for catalytic pyrolysis of biomass and / or coal to significantly increase the content of alkylphenols in tar and Pyrolysis method to significantly reduce the content of alkoxyphenols. Background technique [0002] The oil phase product in the liquid product obtained from biomass and / or coal pyrolysis, that is, tar, is a complex mixture system, which is a cheap fuel source and a valuable chemical resource. However, due to the complexity of components in tar, and its high corrosiveness and acidity, its application as liquid fuel or chemical is limited, so it must be refined. [0003] At present, the main refining schemes include distillation separation technology for component separation and catalytic hydrofining of tar. [0004] Because the components of tar are very complex, there are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
Inventor 王泽林伟刚宋文立党丹
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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