Wet double alkali method desulfurization and dust removal device and process

Abstract

The invention belongs to the technical field of desulphurization and dedusting and discloses a device and a technology for wet-type double-alkali method-based desulphurization and dedusting. The invention solves the problem that the existing desulphurization technology is nonstandard and backward, has a high cost, wastes a desulphurization agent, and produces waste gas which does not satisfy discharge standards. The top of a desulfurization tower is connected to a chimney, the bottom of the desulfurization tower is connected to the top of a three-grade sedimentation basin, the bottom of the three-grade sedimentation basin is connected to an automatic timing filter press, the bottom of a desulfurizer pulping pool is connected to the automatic timing filter press, the top of the desulfurizer pulping pool is connected to the bottom of a pH adjustment tank, the top of the pH adjustment tank is connected to the desulfurization tower, and the desulfurizer pulping pool is connected to an ash storage bin and an automatic water-supplementing system. The device can operate stably and has desulphurization efficiency above 99%, dedusting efficiency above 98.5% and a low operation cost. The method has advanced and mature processes, realizes no discharge of waste water, effectively utilizes three wastes, utilizes local material quicklime as a desulfurizer, has a low cost, is accepted by users at present and is suitable for desulphurization and dedusting on flue gas produced in various large / medium-sized production processes.

Description

technical field [0001] The invention belongs to the technical field of desulfurization and dust removal technology, and in particular relates to a wet double alkali method desulfurization and dust removal device and technology. Background technique [0002] In today's rapid economic development, with the continuous improvement of the people's economic level, the requirements for the environment are becoming more and more stringent. At present, two types of flue gas desulfurization and dust removal are commonly used in industry, wet method and dry method. This method uses interstitial liquid absorbent to wash the gas containing SO 2 The flue gas, the SO in the flue gas is removed by chemical reaction absorption 2 The disadvantage is that the temperature of the flue gas after desulfurization is low, which is not conducive to the smoke exhaust and diffusion of the chimney. The addition of desulfurization agents is manually added, which is unscientific and wastes desulfurizatio...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the current situation that the existing desulfurization process is not standardized, the technology is backward, the cost is high, and the desulfurization agent is wasted.

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