Compared with circular block graphite heat exchangers, the graphite shell and tube falling film absorber features larger processing capacity, lower fluid resistance, and the ability to manufacture larger-scale graphite heat transfer equipment.
Applied in falling film evaporation systems, the equipment provides excellent liquid film distribution and heat transfer performance. With larger single-unit capacity and anti-corrosion treatment on the shell side, it offers excellent resistance to secondary steam corrosion, making it especially suitable for large-scale evaporation systems.
The single-tube sealing structure eliminates stress caused by thermal expansion. Each tube can be independently removed and replaced, greatly facilitating later maintenance.

The equipment mainly consists of a liquid distributor, cooling and absorption section, and gas-liquid separator. The liquid forms a uniform film along individual tubes for cooling and absorption, providing:

High absorption efficiency
High product acid concentration
Low outlet temperature
Stable operation
Convenient process control
No requirement for pre-cooling or pre-drying of raw materials