Device for discharging residual gas in high-temperature pipeline

Abstract

The invention discloses a device for discharging residual gas in a high-temperature pipeline. The device comprises adsorption devices fixed to an air inlet of the pipeline. A heating tank, a convex narrow opening part, a one-way valve part and an outlet valve are sequentially arranged in each adsorption device from bottom to top, the heating tanks are fixed to the pipeline and communicated with water injection pipes, balls used for blocking the narrow opening parts are arranged in the one-way valve parts, the outlet valves are communicated with expandable gas bags, gas dissipation pipelines penetrating through the pipeline are arranged on the expandable gas bags, and valves are arranged at the portions, connected with the expandable gas bags, of the gas dissipation pipelines. Compared with the prior art, the device for discharging residual gas in the high-temperature pipeline has the advantages that waste heat in the high-temperature pipeline is used for boiling water in the heating tanks, vapor generated after boiling is stored in the expandable gas bags, and the vapor is injected into the pipeline again through the gas dissipation pipelines in the later stage to flush out pollution gas in the high-temperature pipeline completely; the device has the effect of cyclic utilization of energy.

Description

technical field [0001] The invention relates to a blower device, in particular to a high-temperature pipeline residual air discharge device. Background technique [0002] In addition to coal dust, sulfur oxides (SOx), nitrogen oxides (NOx), and sometimes metallic mercury (Hg0 [0003] ). In recent years, various methods and devices have been proposed for treating metallic mercury by combining a denitrification device that reduces NOx and a wet desulfurization device that uses an alkali absorbent as an SOx absorbent. [0004] As a method for treating metallic mercury in exhaust gas, a system has been proposed in which, in the flue, on the upstream side of a high-temperature denitrification device, a mist of ammonia (NH3) solution is sprayed for reduction and denitrification, and a mist of hydrochloric acid (HCl ) solution to oxidize (chlorine) mercury on the denitrification catalyst to form water-soluble mercuric chloride, and remove mercury through a wet desulfurization de...

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Problems solved by technology

[0005] All the above exhaust gases need to be collected and treated to avoid harm to the environment. Generally, the pipelines of factories are very long. After the equipment stops working, there will still be a large amount of exhaust gases in the pipelines that have not been collected and processed, and these residual exhaust gases will slowly overflow and mix. In the air, if the blower device is installed, the effect of exhausting residual air can indeed be achieved, but the additional installation of the blower device will not only increase the cost investment, but also consume electricity every time it is used, which is not environmentally friendly and economical.

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