Gasification furnace

Abstract

The invention discloses a gasification furnace comprising an outer shell, an inner shell, a spray nozzle, a lower shell, a cooler, a positioning member and an air guide tube, wherein an inlet and an outlet are arranged at the top and the bottom of the outer shell respectively; the inner shell is arranged in and separated from the outer shell, provided with a gasification chamber in a positioning manner and consists of membrane walls provided with a cooling water inlet and a cooling water outlet; a deslagging chamber communicated with the gasification chamber is positioned in the lower shell, a deslagging opening is arranged at the bottom of the lower shell, and an air outlet is arranged on the side wall of the upper part of the lower shell ; the cooler surrounds the outlet on the outer shell and is connected at the outer bottom wall of the outer shell; the positioning member is arranged between the inner bottom wall of the outer shell and the inner shell; and the upper end of the air guide tube is connected with the cooler, and the lower end of the air guide tube is downwards extended in the deslagging chamber. The gasification furnace can use high ash fusion temperature coal as raw materials to produce gas, has strong capability of resisting gas scour and achieves convenient replacement.

Description

[0001] technical field [0002] The invention relates to a gasification furnace, in particular to a coal gasification furnace which can use coal with high ash melting point as raw material to produce crude gas containing carbon monoxide and hydrogen. Background technique [0003] The inner layer of the traditional entrained bed coal gasifier with coal-water slurry as raw material usually uses refractory brick material, so the melting point (FT) of raw coal ash is generally not more than 1400 °C, which limits the choice of coal types. For example, GE's coal-water slurry gasifier generally requires the melting point (FT) of raw coal ash not to be higher than 1350°C. Therefore, this traditional gasifier limits the use of raw materials, cannot widely use cheap coal, and has a small application range. In addition, the manufacture, installation, maintenance and replacement of refractory bricks are very complicated, time-consuming and labor-intensive. In addition, the traditional...

AI Technical Summary

Problems solved by technology

For this reason, an object of the present invention is to propose a kind of gasification furnace, and this gasification furnace can solve the problem that the raw fuel coal selection of the gasification furnace that takes coal-water slurry as raw material is limited by ash melting point, and cheap coal cannot be widely used. And wide adaptability, friendly to the environment

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