A self-circulating plasma gasifier

Abstract

The invention provides a self-circulation plasma gasification furnace and relates to plasma equipment. The self-circulation plasma gasification furnace comprises a gasification furnace body and a plasma device. The gasification furnace body is formed by a fireproof furnace wall and a heat preservation wall, the gasification furnace body is provided with a feeding port for feeding and a synthesis gas outlet for discharging, a gasification area is arranged on the lower portion in the fireproof furnace wall of the gasification furnace body, a circulation gas outlet for discharging is formed in the top of the gasification furnace body, a circulation return gas port for feeding is formed in the gasification area on the lower portion of the gasification furnace body, the circulation gas outlet and the circulation return gas port are communicated through a circulation return gas pipe, a plasma electric arc area is arranged below the gasification area in the gasification furnace body, and a first discharging assembly and a second discharging assembly of the plasma device are installed on the part, at the plasma electric arc area, of the fireproof furnace wall. The self-circulation plasma gasification furnace is suitable for being applied to the field of solid waste disposal, and solid organic waste is converted into hydrogen-rich synthesis gas meeting the application requirement of chemical materials; water vapor, soot, tar and the like generated in the drying and pyrolyzing process of the raw materials return to the gasification area through the circulation return gas pipe for secondary gasification, and complete gasification is achieved.

Description

technical field [0001] The invention relates to electromechanical equipment, in particular to a gasification equipment. Background technique [0002] The gasification agent used in the conventional gasification device is water vapor + air or water vapor + oxygen. When the gasifier is working, the water vapor + air or water vapor + oxygen are directly sent into the gasifier to make the water vapor and Coal undergoes a gas-forming reaction to generate synthesis gas, which is an endothermic reaction that requires the oxidation reaction of air or oxygen and carbon to provide heat for it. The gasification rate of this gasification method is low, and at the same time, a large amount of Carbon dioxide waste gas not only affects the quality of synthesis gas, but also causes a large amount of greenhouse gas emissions in post-production. Due to the low calorific value of domestic waste and the low content of fixed carbon in its chemical composition, if conventional gasification techn...

AI Technical Summary

Problems solved by technology

[0002] The gasification agent used in the conventional gasification device is water vapor + air or water vapor + oxygen. When the gasifier is working, the water vapor + air or water vapor + oxygen are directly sent into the gasifier to make the water vapor and Coal undergoes a gas-forming reaction to generate synthesis gas, which is an endothermic reaction that requires the oxidation reaction of air or oxygen and carbon to provide heat for it. The gasification rate of this gasification method is low, and at the same time, a large amount of Carbon dioxide waste gas not only affects the quality of synthesis gas, but also causes a large amount of greenhouse gas emissions in post-production

Due to the low calorific value of domestic waste and the low content of fixed carbon in its chemical composition, if conventional gasification technology is used to gasify domestic waste, the endothermic reaction between water vapor and domestic waste will consume the energy of the gasifier. The gasification furnace needs to add coal fuel and input air or oxygen to support the combustion, so that the exhaust gas content in the synthesis gas is high, and the useful components in the obtained synthesis gas are quite low, almost exhaust gas, which cannot meet the application requirements of chemical raw materials

Images