Gas concentration detection device and aluminum ash post-hydrolysis ammonia concentration detection method

Abstract

The application discloses a gas concentration detection device and an aluminum ash post-hydrolysis ammonia concentration detection method. The gas concentration detection device comprises a liquid carrier tray; a sealing hood is arranged on the liquid carrier tray and is used for holding an article under detection; the sealing hood is hermetically connected with the liquid carrier tray; the sealing hood has at least two through holes; each through hole is provided with a cover in releasable manner. The technical scheme according to an embodiment of the application provides the gas concentration detection device to solve the prior problems; the gas concentration detection device can represent a gas concentration quickly and efficiently.

Description

technical field [0001] The present disclosure generally relates to the field of detection, and in particular to a gas concentration detection device and a method for detecting ammonia concentration after hydrolysis of aluminum ash slag. Background technique [0002] Aluminum ash (aluminum ash / aluminum slag) is a common waste in the aluminum industry with a huge output. Its main source is the infusible inclusions, oxides, and additives floating on the surface of the aluminum melt during the smelting of aluminum and the production of aluminum alloys. And the reaction products produced by physical and chemical reactions with additives, etc., are produced in all production processes where aluminum is melted. During the aluminum smelting process, it is usually necessary to fill the furnace with nitrogen to accelerate purification and purification. A part of the nitrogen is absorbed by the aluminum ash floating on the surface of the aluminum water when it evaporates, so the alumin...

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Problems solved by technology

The first method is suitable for the determination of ammonia in the exhaust gas of pharmaceutical, chemical, coking and other industries, but the measurement range is only 0.5-800mg / m 3 ; The second method is suitable for the determination of ammonia in the odorous factory boundary and ambient air, and the measurement range is smaller; the third method is suitable for the determination of ammonia in the air of public places, and is also applicable to the concentration of ammonia in the atmosphere of residential areas and indoor air Determination of

[0004] The above measurement methods are not only complicated in the measurement process, but also the measurement environment is basically open. The measurement value reflects whether the environmental quality is qualified, and cannot achieve the purpose of characterization of the ammonia concentration of aluminum ash slag products.

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