The waste gas treatment solutions of pharmaceutical factory laboratory

Publish Time:2022-10-14   Views:166

The composition of waste gas in drug research and development laboratories is relatively complex, mainly including inorganic acid-base waste gas and organic waste gas. Therefore, the waste gas treatment of drug research and development laboratories is divided into inorganic waste gas treatment and organic waste gas treatment. The inorganic waste gas treatment method adopts the spraying acid-base neutralization method. However, because the organic waste gas in the drug research and development laboratory is of low concentration, it can be treated by activated carbon adsorption method and UV photolysis purification.

Removal of inorganic acid-base waste gas by acid-base neutralization method in spray tower

The acid-base neutralization method of the wet scrubber tower is based on the principle of acid-base neutralization, using lye or acid as the spray medium, and fully contacting the exhaust gas, which can effectively treat HCL, HF, H2SO4, HCN, H2S, ammonia, sulfur dioxide, Water-soluble gases such as nitrogen dioxide have a purification efficiency of more than 95%.

wet scrubber system

Organic waste gas treatment method of laboratory waste gas treatment equipment in pharmaceutical factory:

1.Activated carbon adsorption

The main principle of activated carbon adsorption method is to use porous solid adsorbents (activated carbon, silica gel, molecular sieve, etc.) to treat organic waste gas, so that harmful components can be fully adsorbed through chemical bond force or molecular attraction, and they are adsorbed on the surface of the adsorbent. So as to achieve the purpose of purifying organic waste gas. The adsorption method is currently mainly used in the purification of low-concentration organic waste gas with large air volume, low concentration (≤800mg/m3), no particulate matter, no sticky matter, and normal temperature.

Activated carbon has high purification rate (activated carbon adsorption can reach more than 90%), is widely used, simple to operate, and low investment. After the adsorption is saturated, it is necessary to replace new activated carbon or to carry out activated carbon dehydration.

horizontal scrubber

2.UV photolysis purification

The UV photolysis purification method uses high-energy UV ultraviolet beams to decompose oxygen molecules in the air to generate free oxygen (that is, reactive oxygen species). Since the positive and negative electrons carried by free oxygen are unbalanced, they need to combine with oxygen molecules to generate ozone. Ozone has a strong The organic waste gas and malodorous gas are degraded and converted into low-molecular-weight compounds, CO2 and H2O through the synergistic photolysis and oxidation of organic waste gas and malodorous gas by ozone.

The above is the introduction of the waste gas treatment equipment in the laboratory of the pharmaceutical factory. Regarding the waste gas treatment in the laboratory of the pharmaceutical factory, it is generally necessary to design according to the concentration of the waste gas, the amount of production, the composition of the waste gas, and how to collect it. If you have any questions about waste gas treatment, you can consult BIOETP .