Application of VOCs and odor pollution control technology in pharmaceutical industry

[technical article of China Pharmaceutical network] in China, VOCs (volatile organic compounds) refer to organic compounds with saturated vapor pressure greater than 70 Pa at normal temperature and boiling point lower than 260 ℃ at normal pressure, or all organic compounds with corresponding volatility at vapor pressure greater than or equal to 10 Pa at 20 ℃ VOCs treatment in pharmaceutical industry has been paid more attention by many enterprises The following describes the production of VOCs and odor pollution in pharmaceutical industry, as well as the current treatment technology and application overview Air pollution control has attracted more and more attention of various industries Pharmaceutical industry is a large pollution producing industry The organic solvents used in production generate volatile organic compounds (VOCs) and odor gas Long term emission will worsen the regional atmospheric environment and seriously affect the health and life of nearby residents Next, the chemical industry state combs the production of VOCs and odor pollution in the pharmaceutical industry, as well as the current treatment technology and application overview, so as to facilitate enterprises to understand VOCs and odor pollution more systematically, and to study and control pollution more scientifically I according to the production and emission characteristics, the pollution sources of VOCs and odor pollution in pharmaceutical industry are classified into six categories: chemical synthesis, fermentation, extraction, traditional Chinese medicine, bioengineering and mixed loading preparation The first three categories are the main pollution sources VOCs and malodor are mainly produced in the process of drug synthesis, biological fermentation, solvent transportation, storage and recovery, product extraction, refining and drying, wastewater treatment and solid waste collection and disposal, which can be divided into fermentation tail gas, organic waste gas, malodorous waste gas, acid and alkali waste gas, etc The types and emission forms of pollutants generated by various production facilities and links in the pharmaceutical industry are as follows: list of VOCs and odor pollution in the pharmaceutical industry there are many problems in the pharmaceutical industry, such as long production process and many production links; many production varieties and materials involved, complex and variable emission components; many unorganized escape links, difficult to collect waste gas; There are many organic compounds containing halogen, nitrogen, sulfur and other elements; equipment corrosion, secondary pollution, etc For all kinds of waste gas (including the same kind of waste gas produced by different products, the waste gas produced by different production processes and raw and auxiliary materials of the same kind of products, as well as the waste gas that changes composition and concentration with time or production stage), we should start from the "unorganized" emission to the "organized" emission, so as to achieve the equipment closure, and the equipment that cannot be completely closed should be set up with closed space 2 Overview of VOCs and odor pollution control technology in pharmaceutical industry: in addition to controlling the generation of VOCs and odor pollution, the emission of waste gas should also be controlled The principle, application scope and technical characteristics of common treatment technologies are as follows: