Deoxidation and drying integrated purifier

Abstract

The invention relates to a deoxidation and drying integrated purifier, comprising an external cylinder and an internal cylinder, wherein a filling region is arranged in the internal cylinder and is divided into an upper layer and a lower layer, the upper layer is filled with deoxidant, reproducible silica gel is filled in the upper part of the lower layer, a molecular sieve is filled in the lowerpart of the lower layer, a tube plate arranged above the internal cylinder is welded with an electric heating element protective bushing and a temperature measurement element protective bushing, the electric heating element protective bushing and the temperature measurement element protective bushing extend into the filling region in the internal cylinder, an electric heating element is installedin the electric heating element protective bushing, a temperature measurement element is installed in the temperature measurement element protective bushing, a working gas inlet is arranged at the upper part of the side wall of the external cylinder and is communicated with the upper layer of the filling region of the internal cylinder, and a working gas outlet is arranged at the lower part of the side wall of the external cylinder and is communicated with the lower layer of the filling region of the internal cylinder. The device integrates the functions of deoxidation and drying, simplifies a process flow of a hydrogen purification system and supplies the technical support to safe, stable and continuous running of the hydrogen purification system.

Description

technical field [0001] The invention relates to a device for reprocessing hydrogen generated by water electrolysis, in particular to a deoxygenation and drying integrated purifier. Background technique [0002] Theoretically, there are only two impurities, oxygen and water, in the hydrogen produced by the water electrolysis hydrogen production equipment, so the purification of this gas is to remove oxygen and water. The traditional hydrogen purification process uses advanced deoxidizers. Under the catalysis of palladium catalyst, hydrogen and oxygen react to generate moisture, which then enters the cooler for primary dehumidification, and finally enters the adsorption dryer to remove moisture to achieve the purpose of purification. It can be seen that the deoxygenation and dehydration of hydrogen are carried out in two different containers. If the user does not have high requirements for the hydrogen index of the product (oxygen content ≥ 0.01, dew point ≥ -50 ℃), such confi...

AI Technical Summary

Problems solved by technology

The dryer has only two temperature measurement points: the regeneration gas inlet and the regeneration gas outlet. The temperature of the regeneration gas inlet is affected by many factors and cannot directly reflect the temperature of the electric heating zone, such as: the bottom structure of the dryer, the heating time of the regeneration gas, The gas flow rate, etc., so that the electric heating tube cannot be effectively protected, and there is a possibility of dry burning, so that the continuous and stable operation of the purification equipment cannot be guaranteed

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