Description
By PDS desulfurizing catalyst process with one or two step
desulfurizing equipments, H2S, HCN and organic sulfur (RSH, COS,
CS2)can be removed simultaneously in a fast speed and high
efficiency. The removing efficiency is *5.***9.9%,
****7% and over *0% for H2S, HCN and organic sulfur respectively.
In which, HCN is translated into (NH4)2CO3.PDS method has no limits
for the sort, pressure and constituents of various gases. In normal
condition, it is easy to reach to the purification standard for any
gas.
In PDS process, there are no waste liquid discharging, since
Na2SO4 is always not created and the accumulation of Na2S2O3 and
NaSCN can be controlled to a very low level by controlling a
suitable technology condition. This method make gas desulfurization
become a nontoxic and clean process and have excellent environment
effect.
The large particles of sulfur were created and separated easily in
the regeneration (oxidation) equipment with PDS process.
Desulfurizing solution was clear because very low content of
folating sulfur contained. In particular, PDS process has the
function of cleaning sulfur that had been stopped in the
desulfurization tower.
The cost of catalyst of PDS process is only ****0% of that of
Stratford (ADA) method or tannin extract method, the consumption of
alkali is same compared with the last two methods.
The successful development of PDS desulfurizing technology
has laid a technical foundation firmly for the use of high sulfur
coal, oil and natural gas in world.
