Diaqua-bis(9-oxo-4,5-diaza-fluoren-3-olato-κN,O)cadmium(II).

The title compound, [Cd(C(11)H(5)N(2)O(2))(2)(H(2)O)(2)], is a mononuclear complex consisting of a Cd(II) atom, two 3-hydr-oxy-4,5-diaza-fluoren-9-one ligands and two coordinated water mol-ecules. The Cd(II) atom, lying on a twofold axis, displays a distorted octa-hedral coordintion. Adjacent mol-ecules are linked by O-H⋯O hydrogen bonds and π-π inter-actions [centroid-centroid distance = 3.84 (1) Å], leading to a one-dimensional chain. Weak C-H⋯O hydrogen bonds connect the chains into a two-dimensional supra-molecular structure.

Removal of adhesive dusts from flue gas using corona discharges with spraying water.

Effective removal of adhesive and fine dusts from flue gas is very difficult. A new method of electrostatic precipitation of the corona discharges with spraying water (CDSW) was introduced. A new electrode configuration and the circulation spraying of water were employed in the method. The efficient electrostatic precipitation for adhesive and fine dusts can be accomplished without any drain water during a long operating period. The fundamental structure, discharge characteristics, mechanism of spraying and precipitation principle of the electrostatic precipitation using CDSW were described and analyzed. The V-I characteristics, spraying state, supplying water quantity, influence of temperature and clean of the electrodes were researched in series experiments. The treating effects of circulating spraying using the corona plasma at the same time of electrostatic precipitation were investigated. The fundamental theories and experimental data were proposed, in order to effectively remove the adhesive dusts from flue gas using CDSW in practice.