The definition for Volatile Organic Compounds in China is the organic compounds whose saturated steam pressure at normal temperature is higher than 70 Pa and boiling point at ordinary pressure is below 260 degrees, or at 20 degree all volatile organic compounds and steam pressure is higher than or equal to 10 Pa at 20 degrees.
Solvent is one kind of liquid which can dissolve gas, solid and liquid into even mixture. Solvent is also called menstruum which divided into organic solvent and inorganic solvent.
APUMP has carried out the design and practice of steam spray, liquid ring to dry vacuum system in many fields such as cyclohexanone, methionine, MMA, aramid fiber, maleic anhydride, ABS, polyether, etc. According to the characteristics of vacuum system and its components, carried out strict calculation and matching design of process system, and achieved significant energy saving and emission reduction benefits.
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