A desulfurization and denitrification system based on electrolysis of seawater and its process

Abstract

The invention discloses a desulfurization and denitrification system based on electrolytic seawater and its process. A flue gas outlet is provided on the top of the tower body, and a liquid discharge pipe is arranged at the bottom of the tower body. The interior of the tower body is horizontally divided into Gas gathering section, gas-gas heat exchange section, denitrification section and desulfurization section; there is a flue gas pipeline at the upper position inside the tower body, and the flue gas pipeline is set between the gas gathering section and the gas-gas heat exchange section, and it is open The end extends out of the tower body; several needle-shaped plate devices are arranged horizontally at intervals in the middle of the tower body. In the area surrounded by the gas-gas heat exchange section, denitrification section and desulfurization section; in the desulfurization section, several first spray layers are arranged horizontally and vertically, and in the denitrification section, several second spray layers are arranged horizontally and vertically. Drenching layer. The invention has simple structure and energy saving, realizes the integrated treatment of desulfurization and denitrification, and improves the efficiency of desulfurization and denitrification.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a desulfurization and denitrification system based on electrolysis of seawater and a process thereof. Background technique [0002] According to statistics, on a global scale, the air pollution caused by exhaust emissions from marine diesel engines accounts for about 5-10% of the total air pollution, and even as high as 30-40% in port cities; with the continuous growth of global shipping volume, this Undoubtedly, the proportion of environmental pollution in coastal cities will be significantly increased; so far, the improvement speed of ship environmental protection measures has not kept pace with the speed of increase in shipping volume; therefore, how to effectively control the exhaust emissions in the process of ship transportation has become the focus of attention of all countries . [0003] In order to strengthen the protection of the marine ecological environme...

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Problems solved by technology

[0005] However, traditional seawater desulfurization and denitrification equipment needs to be installed vertically, with a height of several meters or even more than ten meters, and cannot be bumped. For ships and offshore operating platforms, it is difficult to provide such installation space and conditions; Uneven air flow, low spray density and intensity per unit area, prone to flue gas short circuit, resulting in high liquid-gas ratio, SO 2 Low absorption efficiency, difficult to improve higher desulfurization and denitrification efficiency, and high operating power consumption. At the same time, due to the direct reaction of high-temperature flue gas with seawater, salting-out and thermal stress corrosion are prone to occur

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