A method for eliminating CO in confined spaces by ultrasonic atomization and spraying of heme solution

Abstract

The invention discloses a method for eliminating CO in a limited space through ultrasonic atomization spraying of a heme solution, and belongs to chemical absorption methods of ultrasonic atomization spraying. With the combination of an ultrasonic atomization device and a chemical absorption method, the purpose of rapidly and effectively reducing the concentration of CO in a limited space can be achieved. According to the method, a heme (He) solution which can be rapidly combined with CO is adopted, a resonant cavity is impacted by using compressed air to generate ultrasonic waves, then a mixed liquid is atomized into micro fog drop of which the diameter is less than 50[mu] u, the fog drop is suspended in air for a long time, then the contact area between the solution and the air can be increased, and the absorption efficiency of the heme solution can be ensured. By adopting the device, 400ppm of carbon monoxide can be reduced to be less than 20ppm within 20 minutes, and the concentration of the carbon monoxide can be kept less than 20ppm within 120 hours. The equipment is gentle in application condition, simple and easy to store, safe and non-toxic and capable of meeting requirements of sustainable development. In addition, the equipment is simple to operate, low in cost and light and portable and provides good support for air purification in limited spaces such as mining escape capsules, refuge chambers and subway traffic.

Description

technical field [0001] The invention relates to a chemical absorption method of ultrasonic atomization and spraying, in particular to a method for eliminating CO in a confined space by ultrasonic atomization and spraying of a heme solution. Background technique [0002] Due to the limited gas exchange with the outside world in confined spaces, it is easy to accumulate a large amount of toxic and harmful gases. Among them, excessive CO concentration will not only directly cause casualties, but also cause explosions if the concentration reaches a certain level. In workplaces such as mines and garbage dumps, excessive CO limits safe production. In addition, the use of mine rescue facilities such as rescue cabins and refuge chambers is also limited. CO gas, due to its stable chemical properties, is almost insoluble in all solvents, and its purification research has always been a difficult problem in the industry. [0003] Existing CO purification technologies mainly include cat...

AI Technical Summary

Problems solved by technology

Among them, the catalytic oxidation method faces the problems of easy catalyst poisoning, harsh reaction conditions, and high cost of precious metal catalysts; the adsorption method has limited absorption effect and high maintenance costs; the deep well method requires high energy consumption, complicated operation, and high equipment and operating costs

When these methods are applied to the purification of low concentration CO in confined spaces, the purification effect is not satisfactory.

Images