Device for environment-friendly treatment of acid gases in laboratory

Abstract

The invention relates to a device for environment-friendly treatment of acid gases in a laboratory in the field of the laboratory. The device comprises a ventilating cupboard, an inner ventilating pipe, a first-stage purifying tower, a second-stage purifying tower, an exhausting chimney and an outer ventilating pipe, wherein the ventilating cupboard is arranged at the position corresponding to theposition above an indoor testing platform of the laboratory; an air valve is arranged at a flue-gas outlet at the top part of the ventilating cupboard; one end of the inner ventilating pipe is connected with an exhausting port of the air valve, and the other end of the inner ventilating pipe is connected with the outdoor ventilating pipe; the outer ventilating pipe is correspondingly communicatedwith the bottom part of the first-stage purifying tower for carrying out oxidizing purification; the top part of the first-stage purifying tower is correspondingly communicated with the bottom part of the second-stage purifying tower for absorbing purification; the top part of the second-stage purifying tower is correspondingly communicated with the exhausting chimney by an exhausting fan. The device has the beneficial effect that the hazard of the acid gases generated in the laboratory to the environment can be effectively managed.

Description

technical field [0001] The invention relates to the field of laboratories, in particular to an environmental protection treatment device for treating acid gas generated in laboratories. Background technique [0002] As we all know, my country has various scientific research institutes, quality inspection, epidemic prevention, environmental monitoring, agriculture and forestry and colleges and universities with laboratories. The total number of laboratories is nearly 100,000. In these laboratories, there are a large number of students every day , scientific research or testing personnel are conducting various tests, due to the application of various instruments and equipment and a wide variety of chemicals or highly toxic substances, it will inevitably produce toxic and harmful waste; at present, laboratories The main chemicals used are hydrochloric acid, nitric acid, sulfuric acid, etc. During the test process, the acid reacts with the product sample, and will release acidic w...

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Problems solved by technology

[0002] As we all know, my country has various scientific research institutes, quality inspection, epidemic prevention, environmental monitoring, agriculture and forestry and colleges and universities with laboratories. The total number of laboratories is nearly 100,000. In these laboratories, there are a large number of students every day , scientific research or testing personnel are conducting various tests, due to the application of various instruments and equipment and a wide variety of chemicals or highly toxic substances, it will inevitably produce toxic and harmful waste; at present, laboratories The main chemicals used are hydrochloric acid, nitric acid, sulfuric acid, etc. During the test process, the acid reacts with the product sample, and will release acidic waste gas harmful to human body such as hydrochloric acid volatile gas, sulfur dioxide, nitrogen oxides, etc. If these waste gases are directly released into In the atmosphere, the sulfur dioxide and nitrogen oxides contained in it will form acid rain in the air, thus directly polluting the environment; however, the acid gas produced in the existing laboratories is basically directly discharged into the atmosphere through exhaust fans, which not only It has caused acid gas pollution to the environment, and it will also endanger people's health, especially sulfur dioxide and nitrogen oxides, which are one of the important factors leading to lung cancer

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