The two-way exchanging heat exchanger heating into concentrated acid desorption of the top of the tower, and again of the reboiler temperature chloride hydrogen and water vapor column countercurrent heat and mass transfer in the tower top by saturated water of hydrogen chloride from concentrated acid, at the bottom of the tower by azeotropic acid; most constant boiling acid back to combination tower circulating hydrogen chloride absorption coarse VCM gas from the lower part of the combination of tower in order to enter the gas distribution area, packed absorption region, the gas-liquid separation zone, column plate absorption region, the derived from the upper part of the water absorption, the top 99% VCM, at the bottom of the tower by concentrated hydrochloric acid; hydrochloric acid by desorption of concentrated acid pump pressurization.
Technical characteristics:
1.Zero discharge, the system does not discharge waste water.
2.Absorption rate of more than 99%, recovery of acid concentration 31-35%, low energy consumption.
3.The operating pressure is reduced, the elasticity is big, the process control is convenient.
Material classification:
PVC/FRP (poly acrylic composite glass fiber reinforced plastic) material:
Applicable to the use of medium temperature below 60. The inner lining layer is made of high quality chemical board hot pressing welding. After the surface treatment, the two interface adhesive (A glue) layer is brushed, then the numerical control winding FRP reinforcing layer is made. The material has excellent corrosion resistance, good mechanical properties, to improve the brittleness of the chemical industry, and to improve the long-term use of temperature and the use of strength.
High corrosion resistant FRP (glass fiber reinforced plastic) material:
The tower is used in the temperature is below 100 DEG C. Lining layer with high resistance to corrosive phenolic epoxy vinyl ester resin (such as DEAKANE470), crosslink density, resin and special structure design of laminated, lining thickness is equal to or more than9.5mm. This structure has excellent resistance to high temperature (90 DEG C) wet chlorine gas properties. Can be used in strong oxidizing medium environment for a long time.
