Auxiliary gasification technique using synthesis gas to burnback and equipment thereof

Abstract

The invention discloses an auxiliary gasification technique using synthesis gas to burnback and equipment thereof, mainly solving the difficulty that the existing gasification furnace has poorer wave adaptability to fuel characteristics. The technique comprises the following steps: one part of the output synthesis gas is extracted under the state that the gas gasification is in conventional operation and the generated synthesis gas is output from the upper part of the gasification furnace continuously, then is delivered into a burning chamber at the lower part of the gasification furnace, generates vigorous burning reaction with sprayed oxygen, and generates high-temperature and high-heat smoke so as to assist the cycle process of the fuel gasification above the burning chamber. The equipment comprises a gasification furnace and subsequent treatment equipment which is provided with a synthesis gas extracting port; the synthesis gas extracting port is connected with a synthesis gas nozzle by a pressure-stabilizing gas storage tank of a circulating fan; and the synthesis gas nozzle and an oxygen nozzle are arranged on the wall surface of the burning chamber at the lower part of the gasification furnace. The technique and the equipment are characterized by good load adjustment, good burning stability, high gasification temperature, wide fuel adaptability and high product quality.

Description

technical field [0001] The invention relates to a technology for improving the practicability, operability and economy of a gasification furnace in the process of preparing synthesis gas from combustible raw materials, and specifically refers to an auxiliary gasification process and equipment using synthesis gas backburning. Background technique [0002] With the natural growth of the population and the continuous development of the economy, the conventional high-quality fossil fuels as the main source of energy are rapidly decreasing, resulting in long-term and huge energy demand and supply pressure in my country and the world. Facing the general trend of global integration, my country's high energy consumption and low energy efficiency economy will face the severe test of how to survive and develop in the international competition. With regard to the utilization of combustible raw materials such as coal, biomass materials, and municipal solid waste, energy saving and consu...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing gasifier has poor adaptability to fuel characteristic fluctuations, and provide a gasifier with good load regulation and combustion stability, high fuel gasification temperature, wide fuel adaptability and high product quality. Auxiliary gasification process and its equipment using synthesis gas backburning

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