With the development of the pharmaceutical industry, the accompanying environmental pollution problem is increasingly intensifying, which seriously affects the normal life of residents and restricts the development of regional economy. According to data previously released by the Ministry of Environmental Protection, the total output value of China's pharmaceutical industry accounts for less than 3% of the country's GDP, while the total pollution emissions account for about 6%. Among them, the problem of high pollution and high energy consumption in the API industry is particularly prominent. .A large number of organic solvents (such as DMF, benzene series, organic amines, ethyl acetate, dichloromethane, acetone, methanol, ethanol, butanone, ether, dichloroethane, acetic acid, etc.) are used in the pharmaceutical industry, and volatilization forms Gases with irritating odor and stench are toxic to a certain extent. Long-term emission will inevitably deteriorate the quality of the regional atmospheric environment and cause harm to the health of nearby residents. Therefore, the effective treatment of VOC pollution in the pharmaceutical industry has become an important problem to be solved urgently. .

Characteristics of exhaust gas in the pharmaceutical industry

① There are many emission points, large amount of emission, and serious fugitive emission. The yield of pharmaceutical and chemical products is low, the solvent consumption is large, the solvent waste gas discharge points are many, and most of the solvent waste gas is discharged in a low-altitude fugitive manner, and the solvent waste gas concentration is high.

② more intermittent emissions. The reaction process is basically a batch reaction, and the solvent waste gas is also discharged intermittently.

③ The discharge is unstable. The composition of solvent waste gas is complex, and the types and concentrations of pollutants vary greatly. The same set of devices may emit pollutants of different properties in different periods.

④The influence of solvent waste gas is wide. Most of the VOCs in solvent waste gas have malodorous properties, low olfactory threshold, easy to diffuse, and a wide range of influence.

⑤ Accidents such as "running, dripping and leaking" etc. discharge a lot. Since there are many flammable and explosive substances in the production process, the reaction process is intense, and the risk of production accidents is high.

Emission Standards

All pollutant indicators at the air outlet have reached the "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996), "Shanghai Comprehensive Emission Standard of Air Pollutants" (DB31/993-2015), "Shanghai Municipal Discharge of Malodorous (Odor) Pollutants" Standard (DB31/1025-2016) secondary emission requirements.