Methanol is vaporized to become methanol vapor by heating.The control system control the reaction temperature based on the proportion of oxygen in the air and methanol to make the oxidation reaction in the best condition. The process uses tail gas circulation to remove partial reaction heat by circulated gas, while the traditional process the reaction heat is removed by steam. The tail gas process can make the concentration range from 37 to 50% of formaldehyde to meet different down-stream products requirement.
Main Reactor - The oxidation reactor is unique which is different from any kind of oxidation reactor in the past . This oxidation reactor solve the stree
corrosion in the boiler sector, therefore increase the equipment life span. Besides, red copper tubes with excellent heat transfer coefficient are equipped in the inside of heat exchanger, the gas flow velocity is increased, and shorten the reaction gas remaining time in the high temperature area, as a result, side reaction is decreased, unit consumption also reduced.
Crystallized electrolysis silver new type catalyst is used, which has bigger mechanic strength and external specific surface, not easy melted, therefore, life span is increased, less catalyst changing.