Generation method of inert gas with stable aerification layer

Abstract

The invention provides a generation method of an insert gas with a stable aerification layer, relating to the filed of production of gas producer inert gases. The method comprises the work procedures of blowing steam upward and blowing air upward, which is characterized in that a lower drain cock is arranged on a bypass on a pipe between a lower master valve and a gas producer; and the generation method of the insert gas comprises the following steps: corresponding valves respectively control the open and close of various stages to carry out the following operations: (1) the steam blown upwards from the bottom at first time is exhausted from an upper drain cock; (2) the steam blown downwards from the top part is exhausted from the lower drain cock; (3) the steam blown upwards from the bottom at the second time is exhausted from the upper drain cock; (4) the air blown upwards from the bottom at the first time is exhausted from the upper drain cock; and (5) the air blown upwards from the bottom at the second time generates the insert gas through the aerification layer, and the insert gas enters a heat exchanger through the upper master valve for cooling. The invention increases air blown downwards from the top part, avoids that the original program is always in air up going, furnace temperature is high so that the furnace is always blown out for charging; the furnace temperature is effectively controlled, thereby avoiding the booster caused by overheat; and the carbon conversion rate of the materials is improved and the energy consumption is lowered.

Description

Technical field: [0001] The invention belongs to the field of inert gas production of coal gas generators, is an effective technology for producing inert gas by a coal gas generator that saves consumption and stabilizes gasification layers, and is an advanced technology suitable for maintenance and replacement of gas systems. Background technique: [0002] The gas production and delivery system must be replaced when it is overhauled and hot, and there are nitrogen generators or high-concentration CO 2 Manufacturers of gas use nitrogen or high-concentration carbon dioxide gas for replacement, while manufacturers that do not have this condition must produce inert gas through a gas generator for replacement. The traditional method of producing inert gas by the gasifier has only two stages: blowing air from the bottom and blowing steam from the bottom. Bottom blowing steam stage is that the steam enters from the bottom of the gasifier, reacts in the gasification layer to genera...

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