Simple device capable of preventing ammonia from evaporating and leaking from ammonium hydroxide storage tank

Abstract

The invention discloses a simple device capable of preventing ammonia from evaporating and leaking from an ammonium hydroxide storage tank. The device comprises the ammonium hydroxide storage tank, adilution water storage tank and a buffer device, wherein an outlet of the ammonium hydroxide storage tank is connected with a static mixer; another outlet of the ammonium hydroxide storage tank is connected with the buffer device; an outlet of the buffer device is connected with the dilution water storage tank; an outlet of the dilution water storage tank is connected with the static mixer. According to the device, the method that dilution water first flows through a buffer tank and then flows into the dilution water storage tank is adopted, so that the relatively low ammonia concentration ofbuffer water in the buffer tank can be maintained at all times, and the sufficient absorption rate is maintained.

Description

technical field [0001] The invention relates to the field of ammonia water treatment, in particular to a simple device for preventing volatilized ammonia gas leakage from an ammonia water storage tank. Background technique [0002] The denitrification systems widely used in new dry-process cement kilns, power plants, steel mills and lime kilns all use ammonia water as the reducing agent raw material for denitrification. The mainstream denitrification processes in China are SNCR and SCR. Among them, the SNCR process mainly uses the mixing of ammonia water and dilution water to prepare dilute ammonia water of appropriate concentration for the reaction of the SNCR denitrification system. [0003] At present, most companies have a breathing valve installed on the top of the denitrification ammonia water storage tank to prevent the ammonia water in the storage tank from volatilizing into the air. However, during the unloading of ammonia water, with the injection of ammonia water...

AI Technical Summary

Problems solved by technology

However, during the unloading of ammonia water, with the injection of ammonia water, a large amount of ammonia-containing waste gas in the storage tank will be discharged. The common way is to use pipelines to guide the ammonia-containing waste gas to an open place with relatively few people or a trench for emptying, so that It has a certain impact on the surrounding environment and also brings certain safety hazards.

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