Humidity and wind controlled rolling bottom gasifier

Abstract

The invention provides a rolling bottom gasifier with humidity control and wind control, which includes a furnace body, a slag discharge port, interlaced drums, and a side gas box, wherein the side gas box is covered on the outside of the furnace body, and its upper and lower ends are It forms a seal with the furnace body; the upper side wall of the side air box is connected with the high-temperature induced draft fan through the air outlet pipe; the preheating air box is installed in the side air box, and the upper and lower ends of the preheating air box are respectively equipped with air outlet and air inlet. The inner wall of the side air box below the preheating air box is provided with an inclined dust shield; the top of the furnace body is provided with a furnace cover, and the top of the furnace cover is provided with an external circulation air outlet pipe for connecting with the outside world, and the lower end of the furnace cover extends to the furnace body. In the upper water collecting pan, drain pipes are arranged on the side walls of the water collecting pan.

Description

technical field [0001] The invention relates to the technical field of gasification furnaces, in particular to a rolling bottom gasification furnace with humidity control and wind control. Background technique [0002] The existing small and medium-sized gasifiers are all fixed bed type, and can be divided into upper suction type and lower suction type. The fixed bed structure leads to uncontrollable slag, easy to block the channel, and difficult to clean. Since part of the gas produced by the up-suction gasifier does not pass through the high-temperature zone, the harmful gas is not fully decomposed. When the gas production position is high, the gas production humidity is high and there is a lot of tar. When the gas production position is low, the CO2 content is high and the reduction layer is unstable. Gas produced is of low quality. Due to the weak air supply control method of the down-suction gasifier, the air supply varies with the material gap, the position and shape...

AI Technical Summary

Problems solved by technology

Fixed bed structure leads to uncontrollable slag, easy to block channels and difficult to clean

Since part of the gas produced by the up-suction gasifier does not pass through the high-temperature zone, the harmful gas is not fully decomposed. When the gas production position is high, the gas production humidity is high and there is a lot of tar. When the gas production position is low, the CO2 content is high and the reduction layer is unstable. Low gas quality

Due to the weak air supply control method of the down-suction gasifier, the air supply varies with the material gap, the position and shape of the air inlet, and the position and shape of the air outlet, resulting in uneven and unstable oxide layer and reduction layer, which cannot cover the furnace. A complete section, the quality of the gas produced is still the same as that of the suction gas, with high tar content, high humidity, unstable, and high dust content

Due to the above reasons, the existing small and medium-sized gasifiers are difficult to use normally and continuously no matter whether they are up-suction or down-suction

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