Production practice of sodium citrate process for desulphurization of abnormally emitted off-gas
Production practice of sodium citrate process for desulphurization of abnormally emitted off-gas is described.Process condition and flow were determined and the largest scale sodium citrate desulphurization plant in China was constructed based on pilot and industrial experiments.In order to ensure regulatory compliance of tail gas,a process consisting of 1st stage absorption by sodium citrate solution and 2nd stage absorption by sodium hydroxide solution was adopted.The problems encountered during production and their solutions were discussed.
The electronic structure and nature of chemical bonding in orthorhombic Si2N2O with substitution impurities (all 3d-atoms) in the cation sublattice have been investigated by the self-consistent ab initio discrete variation method. Consistent changes in the energy structure, interatomic interaction parameters, effective atomic charges, and local moments of substitution 3d-impurities in the series under study are discussed.