Tail gas detection and absorption device for nitric acid production and installation method thereof

Abstract

The invention discloses a tail gas detection and absorption device for nitric acid production and an installation method thereof. Two gas outlets of a three way pipe are connected to a detection pipeline and an absorption pipeline respectively. The detection pipeline is connected to a gas drier. The gas drier is connected to a mixing box. The mixing box is externally provided with a thermal insulation jacket. The mixing box is connected to a booster pump. The booster pump is connected to a detection cavity. A pressure stabilizing valve is arranged on the pipeline that connects the booster pump and the detection cavity. A nitrogen monoxide probe and a nitrogen dioxide probe are arranged in the detection cavity. The nitrogen monoxide probe and the nitrogen dioxide probe are connected to a micro controller. A wireless module is arranged on the micro controller. The micro controller is connected to a display screen through the wireless module. The absorption pipeline is connected to an alkali liquid absorbing box. An electromagnetic valve is arranged on the absorption pipeline. The electromagnetic valve is connected to the micro controller. A communication pipe is arranged between the absorption pipeline and the detection cavity. A non-return valve is arranged on the communication pipe. The structure is simple, the device is user-friendly, the detected data is accurate, the detection and absorption are combined, the absorbing effect is good, and the pollutant discharge is reduced.

Description

technical field [0001] The invention relates to the technical field of nitric acid production, more specifically, to a tail gas detection and absorption device for nitric acid production and an installation method thereof. Background technique [0002] The tail gas produced by nitric acid contains a certain concentration of nitrogen oxides. The concentration usually exceeds the national emission standard and needs denitrification treatment. Therefore, real-time monitoring of tail gas components is very important for mastering emission data. In addition, through the online detection and analysis of oxygen, ammonia, and nitrogen oxides in the reaction tail gas, the parameters of the reaction process can be obtained to evaluate the efficiency of the nitric acid synthesis reaction. At present, the online detection of tail gas has been widely used in petroleum, chemical industry, metallurgy, environmental protection, automobiles, etc., but there are still relatively few industria...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a tail gas detection and absorption device for nitric acid production and its installation method, aiming to solve the inaccurate detection of nitric acid tail gas in the prior art, and the inability to combine tail gas detection with tail gas absorption, resulting in insufficient tail gas absorption. The problem of environmental pollution caused by thorough discharge

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