Desulfurization beneficiating device and refitting method thereof applied to existing equipment

Abstract

The invention provides a desulfurization beneficiating device and a refitting method thereof applied to existing equipment. The desulfurization beneficiating device comprises a slurry spraying module, a slurry tank compatibilizing-partitioning module, a communicating pipeline and a circulating pump, wherein a spraying pipe is arranged in the slurry spraying module; at least one partitioning-separating assembly for dividing a slurry tank into an oxidizing region and absorbing region is arranged in the slurry tank compatibilizing-partitioning module; one end of the communicating pipeline is communicated with the spraying pipe, and the other end of the communicating pipeline is communicated with the absorbing region; the circulating pump is used for pumping the slurry in the absorbing region into the spraying pipe through the communicating pipeline. By utilizing the desulfurization beneficiating device, the desulfurization efficiency of the existing equipment can be effectively increased, meanwhile, the cost of investment on a desulfurization beneficiating refitting process is controlled, the stable operation of a desulfurization system is guaranteed, and the standardized emission of the exhaust gas is realized.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a desulfurization synergist and a modification method applied to existing equipment. Background technique [0002] With the increasingly stringent national environmental protection policies, the newly promulgated "Emission Standards of Air Pollutants for Thermal Power Plants" (GB13223-2011) also put forward higher requirements in terms of total emissions and emission concentrations. At the same time, the new pollution discharge fee system Implementation also puts a lot of pressure on the power plant. In this case, the desulfurization efficiency (generally 95%) of the existing limestone-gypsum wet desulfurization system can no longer meet the requirements of the new environmental emission standards, so the transformation of the flue gas desulfurization device is imperative. [0003] There are usually three methods for desulfurization and efficiency improvement: ...

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Problems solved by technology

[0010] Although the third option can significantly improve the desulfurization efficiency in the initial stage of use, it cannot effectively guarantee the long-term stable operation of the desulfurization system. Stable operation of desulfurization system

Moreover, the currently used desulfurization synergists are difficult to flexibly adapt to changes in different coal types and loads. At the same time, the existing desulfurization synergists increase the content of impurities in gypsum and reduce the purity of gypsum

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