A coal-water slurry purification pre-conversion furnace

Abstract

The invention discloses a coal-water slurry purification pre-change furnace, which comprises a furnace body, a dirt collection basket and a distribution basket arranged in the furnace body, and upper alumina ceramic balls are laid on the upper side of the pre-change protective agent layer in the furnace body layer, the dirt collection basket is placed on the upper layer of alumina ceramic balls, and there is a gap between it and the inner wall of the furnace body, the distribution basket is located on the lower side of the dirt collection basket, and the lower end of the distribution basket extends into the pre-change protective agent layer , the projection of the dirt collection basket covers the distribution basket; the dirt collection basket has a first gas flow channel, and is filled with at least one of the strip-shaped pre-change protection agent and the second alumina ceramic ball, and the bottom of the dirt collection basket is provided with Outriggers; the distribution basket has a second gas flow channel and is filled with third alumina ceramic balls, and the airflow can enter the distribution basket through the space between the legs of the dirt collection basket. Utilizing the application, the effective scale collection capacity of the pre-conversion furnace is greatly increased, the operation period of the pre-conversion furnace is extended, and the number of times of changing the agent is reduced, thereby effectively reducing the cost of changing the agent and the operation risk of the enterprise.

Description

technical field [0001] The invention relates to a coal-water slurry purification pre-converter, belonging to the technical field of coal-water slurry gasification. Background technique [0002] In GE coal water slurry gasification technology, coal water slurry and pure oxygen are sprayed into the gasifier through the process burner, and partial oxidation reaction occurs in the furnace of the gasifier to generate crude water gas. The crude water gas is washed by the scrubber to remove particles and then sent to the downstream purification process. Due to the limited washing effect of the scrubber, the water gas entering the purification conversion device still contains a large amount of fine particles, which makes the conversion catalyst prone to dust and agglomeration, resulting in catalyst Decreased or even inactivated. In order to prolong the service life of the catalyst as much as possible, a pre-change furnace device is added. A layer of alumina ceramic balls and a pre-...

AI Technical Summary

Problems solved by technology

The cut-out pre-conversion furnace needs to be refueled, and the cost of carrying out a pre-conversion furnace refueling operation is relatively high to process 429,000m 3 (Standard) / h water gas pre-conversion furnace as an example, the catalyst replacement cost is 100,000 yuan / time, the construction cost is 100,000 yuan / time, and a large safety risk needs to be borne in the process of changing the catalyst

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