Integrated fixed bed gasifier for chilling and deslagging molten slags

Abstract

The invention discloses an integrated fixed bed gasifier for chilling and deslagging molten slags. The integrated fixed bed gasifier is provided with a high-pressure-resistant shell with an integral structure; an inner cavity of the high-pressure-resistant shell is sequentially divided into a raw material gasifying area, a liquid-state molten slag area and a molten slag chilling area from top to bottom; the raw material gasifying area is provided with a refractory matter layer and a water-cooling jacket, so that a normal operation condition of the raw material gasifying area is maintained, andraw materials are gasified to produce a crude synthesis gas; the liquid-state molten slag area is provided with a funnel-shaped refractory water-cooling enclosure bulkhead, and is used for collectingliquid-state molten slags produced in the raw material gasifying area; a molten slag discharging ring sleeve is arranged at a bottom molten slag outlet part of the refractory water-cooling enclosurebulkhead, and a molten slag discharging control device is arranged in an inner cavity of the molten slag discharging ring sleeve, so that the molten slags are conveniently adjusted to be downwards discharged continuously or discontinuously; a furnace slag outlet used for discharging the chilled furnace slags and connected with an external slag locker in a sealing way is formed in the bottom part of the molten slag chilling area. The gasifier has the characteristics of high inner cavity volume utilization ratio, capability of avoiding high pressure gas leakage, high molten slag chilling efficiency and the like.

Description

technical field [0001] The invention relates to a slag gasification furnace for processing carbon-containing material fuels, in particular to a fixed-bed gasification furnace integrated with slag cooling and slag removal. Background technique [0002] Carbon-containing material fuels generally include biomass, low-rank lignite, peat, high-quality coal, and solid waste, etc. Gasification technology uses thermochemical methods to gasify carbon-containing material fuels to produce crude synthesis gas, which is then purified by gas, High-quality synthesis gas is obtained by component modulation, and then a high-efficiency utilization technology of catalytic synthesis fuel after pressurization. Gasification technology can be divided into fixed bed gasification, fluidized bed gasification and entrained bed gasification according to the type of gasifier, and can be divided into pressurized gasification and normal pressure gasification according to the operating pressure. [0003] ...

AI Technical Summary

Problems solved by technology

[0007] The whole system of the above slag gasifier has many equipments, many connecting flanges and complex structure

Moreover, due to the existence of the connecting pup joints, at least two places need to be sealed and connected by flanges, which is very prone to the risk of high-pressure gas leakage during use; at the same time, the slag chilling pool is relatively large in size due to equipment structure and other reasons. Small, the quenching liquid is consumed too quickly, the amount of slag held at a time is small, and the fuel gasification efficiency is low

Images