Energy-saving regeneration method for wet oxidation desulfurization process

Abstract

The invention discloses an energy-saving regeneration method for a wet oxidation desulfurization process. According to the method, sulfur particles in a pregnant solution are separated by integrated membrane filters, and when the resistance drop of an integrated membrane element of an integrated membrane separator is increased to a designed value, the integrated membrane element is reversely blownby using compressed gas so as to recover the resistance drop of the integrated membrane element to an original value. The multiple integrated membrane filters are connected in parallel, during normaloperation, one integrated membrane filter is in a blowback regeneration state, the other integrated membrane filters are in a filtering state, and the switching process between filtering and blowbackis controlled automatically or manually. When the barren liquor discharged from the filter and compressed air are mixed and then the mixture passes through a static reactor, the desulfurization catalyst in the barren liquor is regenerated due to the action of oxygen in a short time. The method has the characteristics of low barren liquor suspension sulfur, small absorption liquid circulation amount, low power consumption, small excess air coefficient, small secondary salt generation amount and low raw material consumption. Full-closed full-automatic control can be achieved, and the operationenvironment is good. In a word, the method is an energy-saving green technology.

Description

technical field [0001] The invention relates to an energy-saving regeneration method used in the wet oxidation desulfurization process. The rich liquid in the wet oxidation process is filtered to remove sulfur particles contained therein, and compressed air is passed into the filtered lean liquid. , to regenerate the catalyst in a static reactor. In particular, it relates to a process device for realizing the above-mentioned method. The invention belongs to the technical field of chemical technology and energy saving and emission reduction. Background technique [0002] The wet oxidation process widely used in my country has a history of several decades. The desulfurizers have been replaced by hundreds of desulfurizers from the earliest arsenic-alkali method and ammonia water catalytic method to the current tannin extraction method and 888 method. Absorption and regeneration technologies have not improved much in terms of technology. Absorption is still based on the double...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides an energy-saving regeneration process used in the wet oxidation desulfurization process, which solves some technical problems of the existing background art

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