74136078
Feb 4, 1991
pollution control systems, comprising gas scrubbers, heat exchangers, reactor vessels, settling tanks, evaporators, separators, dryers, storage tanks, recuperators, surge tanks, bubble chambers, filtering units, measuring devices, monitoring devices, tubing, liquid-gas columns, pumps and crystallizers, for use in the cement kiln, waste-to-energy, paper, power and chemical process industries
Environmental Control Apparatus