The experiment's results show that the total and plat efficiency of the compound tray is over 100%, the highest efficiency can be up to 122% within the range of F factor I~2.5m/s(kg/m3)i/2, it is far higher than the efficiency of dual flow tray , sieve tray and valve tray .
The real gas velocity in the holes at flooding point is about 11ms-1 under certain tray fractional free area (20%, 25%) and liquid flowing rate (5~40 m3(m2h)-1), according to these data, the operating up limit of compound tray for other gas-liquid system can be reckoned.
Compound tray is a kind of new tray in mass transform equipment. High masstransfer efficiency is the aim of compound tray design. In the course of compound trayefficiency modeling, gas-liquid interfacial areas a is a key parameter to be obtain.
A new multi-pass conductometer system has been developed for researching the behavior of the gas and liquid flowing through the holes on the compound tray.
The paper introduced a new type composite tower by adopting new VST. The productivity of absorbing unit can be improved to 30%. the content of CO 2 in purified gas is≤0.3%,the consumption of PC reduces to 0.5kg/t.
The flue gas from a SHF20~25/400 pulverized coal fired boiler of Yiyang Dimity Textile Mill is treated by a multistage high efficiency water desulphurization and dust scrubber of composite tower, using the printing and dyeing wastewater from this mill as a dedusting and desulphurizer. A good effect of desulphurization and dedusting has been obtained, the colority and basicity of the printing and dyeing wastewater have also been solved.