Method for catalyzing and gasifying carbonized materials by utilizing wood vinegar as catalyst

A carbonized material, wood vinegar technology, applied in the direction of granular/powder fuel gasification, etc., can solve problems such as high cost, difficult industrialization, high price, etc., achieve the improvement of the gasification rate, overcome the high price, and improve the conversion rate. Effect

Inactive Publication Date: 2011-02-02
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The catalysts added in the above patents are alkali metals, alkaline earth metal compounds, nickel oxides, etc., the cost is still high, and it is difficult to realize industrialization
[0004] However, there are few studies on the catalytic gasification of petroleum coke and biomass coke, and the catalytic gasification of coal can be used as a reference, but the above problems still exist
Although biomass catalytic gasification has been studied for decades, there are still some difficulties, such as the low mechanical strength of dolomite, the most used natural ore, the difficulty and high price of alkali metal catalyst recovery, and the easy deactivation of nickel-based catalysts. Wait

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Example 1: Mix 10g of Shenfu coal with 0.98g (calculated as CH3COOK in the wood vinegar) of wood vinegar, and stir for 2 hours with a magnetic stirrer to make the coal and wood vinegar evenly mixed; place the above mixed sample in In an oil bath, evaporate the water to dryness at 130°C, and dry for 48 hours at 110°C in an oven; weigh 1.098g of the test sample, at a vaporization temperature of 750°C, a partial pressure of water vapor of 60%, and a vaporization time The gasification reaction was carried out under the condition of 60min, and the gas was detected by mass spectrometry. As a result, the contents of various gases that can be produced per gram of coal are shown in Table 1:

example 2

[0018] Example 2: Combine 10g Shenfu coal and 0.98g (with wood vinegar in CH 3 COOK calculation) wood vinegar is mixed, and stirred with a magnetic stirrer for 2 hours to make the coal and wood vinegar evenly mixed; put the above mixed sample in an oil bath, evaporate the water to dryness at 130°C, and put it at the oven temperature Dry for 48 hours at 110°C; weigh 1.196g of the experimental sample, and carry out the gasification reaction under the conditions of a gasification temperature of 750°C, a partial pressure of water vapor of 70%, and a gasification time of 45 minutes. The gas is detected by mass spectrometry. As a result, the contents of various gases that can be produced per gram of coal are shown in Table 1:

example 3

[0019] Example 3: Combine 10g Shenfu coal and 0.98g (with wood vinegar in CH 3 COOK calculation) wood vinegar is mixed, and stirred with a magnetic stirrer for 2 hours to make the coal and wood vinegar evenly mixed; put the above mixed sample in an oil bath, evaporate the water to dryness at 130°C, and put it at the oven temperature Dry for 48 hours at 110°C; weigh 1.098g of the experimental sample, and conduct the gasification reaction under the conditions of a gasification temperature of 850°C, a partial pressure of water vapor of 60%, and a gasification time of 35min, and the gas is detected by mass spectrometry. As a result, the contents of various gases that can be produced per gram of coal are shown in Table 1:

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Abstract

The invention discloses a method for catalyzing and gasifying carbonized materials (coal, petroleum coke and biomass coke) by utilizing wood vinegar as a catalyst. The invention is characterized in that the carbonized materials (the coal, the petroleum coke and the biomass coke) and the wood vinegar are evenly mixed by the solution immersion method; the moisture of the mixture is evaporated to dryness; and the mixture is dried at 110 DEG C to obtain an experimental sample. The mass of CH3COOK in the wood vinegar accounts for 5-15% of the mass of the carbonized materials. The catalytic and gasification reaction is carried out on the experimental sample and water vapour, wherein the reaction temperature is 750-850 DEG C, the water vapour differential pressure is 40-70% and the reaction time is 30-90min. In the invention, the carbonized materials added with the catalyst can have a conversion percent and a gasification rate both 3 times more than those when no catalyst is added; the wood vinegar, the adopted catalyst is the main by-product of the pyrolytic biomass, on one hand, the reactivity of the gasification of the carbonized materials is improved, and one the other hand, recycling of the by-product is realized.

Description

Technical field [0001] The invention discloses a method for catalytic gasification of carbonized materials (coal, petroleum coke and biomass coke) using wood vinegar liquid as a catalyst, and belongs to the field of energy and chemical industry. Background technique [0002] Wood vinegar is a reddish brown liquid. It is a reddish brown liquid with fumigating smell obtained after the vapor mixture derived from the dry distillation equipment is condensed and separated. It is the main by-product of the biomass pyrolysis process. It is difficult to handle by itself and poses a greater threat to the environment. In fact, the disposal of by-products such as wood vinegar has become a bottleneck in the development of biomass pyrolysis and gasification technology. However, wood vinegar is mainly acetic acid, rich in various inorganic compounds such as K, Na, Ca, Mg, Fe, and more than 200 organic compounds. Wood vinegar is used for the gasification of coal, petroleum coke and biomass coke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/46
Inventor 吴幼青王建建吴诗勇高晋生
Owner EAST CHINA UNIV OF SCI & TECH
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