Condensing dioxygen method desulfuration denitration integration device and process thereof

Abstract

The invention discloses a condensing dioxygen method desulfuration denitration integration device and a process thereof. The integration device comprises a boiler room smoke vent, a first level dry type dust removing device, an induced draft fan, a second level wet type dust removing device, a comprehensive desulfuration denitration tower and a chimney which are sequentially connected through flues. An ozone filling device is disposed on the flue on which the first level dry type dust removing device is connected with the induced draft fan. A liquid inlet of the second level wet type dust removing device and a liquid inlet of the comprehensive desulfuration denitration tower are both connected with a circulating water tank. A liquid outlet of the second level wet type dust removing device is connected with a precipitation water tank. A liquid outlet of the comprehensive desulfuration denitration tower and a liquid outlet of the precipitation water tank are both connected with the circulating water tank. A liquid outlet of the circulating water tank is connected with a crystallization tower, and a liquid outlet of the crystallization tower is connected with the circulating water tank. By means of a set of device, the process adopts the dry and wet method for desulfurating, denitrating and dedusting smoke of coal-fired boilers, and has the advantages of being high in energy efficiency, stable in operation, little in investment, low in operation cost, strong in applicability and free of secondary pollution, treating wastes with processes of wastes, recycling by-products and the like.

Description

technical field [0001] The invention relates to a technology for purifying flue gas discharged from combustion, in particular to a condensing double oxygen method desulfurization and denitrification integrated device and its technology. Background technique [0002] Worldwide, most developing countries still use coal as their main energy source, and my country is one of them. Coal accounts for more than 70% of my country's primary energy production and consumption. Coal-burning waste gas such as sulfur dioxide SO 2 , Nitrogen oxide NO X , PM, heavy metals and other pollutants have increasingly serious impact on the environment, and SO 2 , NO X It is the main protozoa for the formation of acid rain. Today, the problem of acid rain is becoming more and more serious, and SO 2 , NO X emissions have become imperative. [0003] At present, most of the processes and equipment used for flue gas desulfurization, denitrification and flue gas dust removal of coal-fired boilers are...

AI Technical Summary

Problems solved by technology

SCR is the most effective low NO X Control technology can achieve a denitrification efficiency of more than 80%, but its initial investment is 490-1250 / kw, which is very expensive, and the operating cost is about 2100-2800 yuan / ton NO X , if SCR technology is introduced on the basis of wet desulfurization, it will inevitably increase huge investment and operating costs, and the gains outweigh the losses

[0005] It can be seen that the use of more than two sets of independent desulfurization and denitrification systems not only requires complex flue gas purification equipment, large floor space, and high construction and operation costs, but also combines these independent desulfurization, denitrification and dust removal systems reasonably to achieve high efficiency. There are also many difficulties in running

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