Problems encountered in the VOCS control project

I’m not sure which component the oil-washing components mentioned by Haiyou refer to specifically – is it the storage tank or the top of the oil-washing tower? Is tar or some other component used in the cleaning oil? 1) If it is a wash oil storage tank, generally, such tanks also need to have their oil and gas streams collected together with those of VOCs in the chemical production units and storage tanks, and the absorption is carried out through internal washing processes. The specific approach involves equipping the oil washing tank with a vent valve, a flame arrester, and an oil-gas connection pipe, and using the main fan to pump the fluid into the oil washing tower ； 2) In the case of an oil washing tower, the emissions from the chemical processing unit of a coking plant are mainly organized gases, while those from storage tanks are typically unorganized gases. The concentration levels of VOCs vary considerably. The medium used for oil washing is usually heavy components with low saturated vapor pressures; in addition to absorbing organic components, another important function of this medium is to reduce the peak levels of hydrocarbon components. This is because the gas components exiting the oil washing tower correspond to the saturated oil washing components at the operating temperature. There are several possible reasons for the high volatility: one is that the oil being washed isn’t cooled, resulting in a high operating temperature that increases the saturated vapor pressure and thus the volatility ； Secondly, the fan may be oversized or improperly selected; if the fan is installed at the gas-phase outlet at the top of the oil washing tower, the low operating pressure inside the tower is also one of the reasons for increased volatility ； Third is the issue of selecting the washing oil; washing oils themselves have a relatively high saturated vapor pressure ； Fourth is the issue with the internal components of the tower; for example, uneven distribution of the gas-liquid distributor leads to channeling and uneven flow within the packing, too low a height of the tower packing, and a malfunctioning top wire mesh demister, among other problems