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

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...

AI Technical Summary

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