In-furnace oil tar self-stripping type organic solid fuel gasification device and method

Abstract

The invention provides an in-furnace oil tar self-stripping type organic solid fuel gasification device and method. The device comprises a feeding device, a gasification device, a gasification gas fly ash cyclone separation device or a fly ash separation filtering device, a condensing device, a condensate water evaporation device, a gasification medium preheating device, an ash residue discharging device and a gas storage tank, wherein organic solid fuel is added from a feeding opening, and enters the gasification device through a two-stage sealing feeding valve; the organic solid fuel in the gasification device is firstly subjected to drying, pyrolysis, gasification and combustion reaction; gasification gas and ash residues are generated. The in-furnace oil tar self-stripping type organic solid fuel gasification device and method provided by the invention have the advantages that a good oil tar removal effect can be achieved; the coking wastewater zero discharge is realized; the gas quality can also be optimized in the process; the energy source efficiency is improved; the operation cost is reduced.

Description

technical field [0001] The invention relates to a furnace self-detarring organic solid fuel gasification device and method. Background technique [0002] In the world's energy reserves, coal accounts for about 79%, and oil and natural gas account for about 12%. The research and development of coal utilization technology is one of the important contents of energy strategy. However, with the rise and development of the petrochemical industry, the proportion of coal in the chemical raw materials continued to decline and was gradually replaced by oil and natural gas. Until the end of the 1970s, due to the sharp rise in oil prices, the development of the world petrochemical industry was affected. At the same time, the coal chemical industry has made remarkable progress in coal gasification and coal liquefaction. Especially after the 1990s, the world's oil price has been running at a high level for a long time, and it has shown a continuous upward trend, which has further promote...

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Problems solved by technology

However, due to the characteristics of low-rank coal, a large amount of gaseous tar, most of the volatile matter and moisture produced by pyrolysis will enter the gasification gas together. If the tar content is too high, it will easily precipitate and block the pipeline. Gas needs to use a large amount of water for washing and cooling, resulting in a large amount of waste water, which is difficult to deal with, and the cost is too high. Direct discharge will cause serious pollution to the environment. Similar problems also appear in the field of biomass gasification

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