The common problems with crude benzene condenser mainly include the following aspects:
High product temperature: After being cooled by the oil and gas heat exchanger and condenser, the crude benzene vapor generated by the benzene removal tower still has a high temperature, usually between 40-44 ℃. This will cause a large amount of volatilization of crude benzene products during storage, increase the concentration of benzene vapor in the workplace, affect on-site safety, and increase the possibility of occupational hazards.
Low recovery rate of crude benzene: Due to high product temperature and large evaporation of crude benzene vapor, some products are lost, thereby reducing the recovery rate of crude benzene and making the system recovery rate unable to meet the design requirements.
High consumption of cooling water and low cooling efficiency: In order to reduce the temperature of crude benzene products, it is necessary to increase the amount of low-temperature water used for cooling, which increases the energy consumption of water transportation. Especially when the cooling system is running at full load, the temperature of the crude benzene product is still high, indicating that the cooling efficiency needs to be improved.
Poor performance of the condenser cooler leads to system problems: Poor performance of the condenser cooler can cause a large amount of initial distillate to be released, polluting the atmosphere and surrounding environment. At the same time, the volume of non condensable gas increases the resistance of the gas channel, causing an increase in tower pressure and disrupting the operation. In addition, it may also lead to poor transportation of benzene gas, further affecting production.
Leakage problem of condensing cooler: If the service life of the crude benzene condensing cooler is too long, leakage may occur, affecting the chloride ion content of crude benzene and posing a risk of blockage to subsequent refined benzene processing equipment.