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Method for preparing natural gas by biomass material thermal cracking and thermal cracking furnace used by same

A pyrolysis and biomass technology, applied in the energy field, can solve the problems affecting the efficiency of pyrolysis and the release of calorific value, and achieve the effect of multi calorific value and reduced structure

Inactive Publication Date: 2010-08-18
倪建辉
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Problems solved by technology

[0005] In the above preparation method, a certain amount of air will still be introduced during the pyrolysis process, so that the material will undergo pyrolysis reaction in a small amount of oxygen environment. The existence of oxygen will affect the efficiency of pyrolysis to a certain extent, thereby affecting the release of calorific value.

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  • Method for preparing natural gas by biomass material thermal cracking and thermal cracking furnace used by same
  • Method for preparing natural gas by biomass material thermal cracking and thermal cracking furnace used by same
  • Method for preparing natural gas by biomass material thermal cracking and thermal cracking furnace used by same

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Depend on figure 1 with figure 2 As shown, the method for preparing natural gas by pyrolysis of biomass material comprises the following steps:

[0029] (1) Material crushing - make the material reach the required particle size by crushing. If the size requirement cannot be reached after several crushings, you can use a screen to filter out larger particles to achieve the required size; but if The particles themselves are small and uniform in size, so there is no need to crush them, such as rice husks, sawdust, etc.

[0030] (2) Drying of materials——by drying, the moisture content of the materials is kept at 0-12%, and the optimal water content is 0-7%, which can greatly reduce the water vapor produced in the thermal cracking step, and is not only beneficial to shorten the The subsequent cooling time also increases the puri...

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Abstract

The invention relates to a method for preparing natural gas by biomass material thermal cracking. The method comprises material smashing, material drying, thermal cracking in an oxygen-free state, cooling and separation and compressing separation steps and the like. The invention also provides a thermal cracking furnace in a thermal cracking process. The structure of the thermal cracking furnace can be simplified by using an oxygen-free thermal cracking environment, and the energy requirement of thermal cracking can be met by only using an electric heater. Compared with the prior art, the method can prepare more natural gas and obtain higher heat value based on the biomass material with the same quality, in particular forestry and agricultural residues.

Description

technical field [0001] The invention relates to the field of energy, in particular to a method for preparing natural gas by thermal cracking of biomass materials, and a thermal cracking device used in the method. Background technique [0002] As a difficult problem in today's world, energy issues have attracted great attention from all countries. my country's oil, coal, and natural gas per capita recoverable reserves are only 11%, 55%, and 4.3% of the world's average level; in terms of energy efficiency and energy consumption per unit product, it is 40% lower than the world's advanced level, and the gap is very obvious. How to realize the optimization of energy structure on the basis of improving energy efficiency has become the key to whether our country can achieve sustainable development. To this end, the state strongly encourages the development of renewable energy, and has formulated the "Renewable Energy Law" and a series of related policies to support it. For biomas...

Claims

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Application Information

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IPC IPC(8): C10L3/08C10B53/02C10G1/00C10B15/02C10L3/10
CPCY02E50/14Y02E50/10
Inventor 倪建辉
Owner 倪建辉
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