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AssigneesChina Petroleum & Chemical Corporation, Research Institute of Nanjing Chemical Industrial Group
InventorsAixiang HAO, Songbai Mao, Jing Kong
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A process of removing SO2 from a flue gas with a trickling filter using modified ceramsite packing is described. The biological flue gas desulfurization process includes: feeding the flue gas containing sulfur dioxide through the column bottom into the biomembrane trickling filter at certain temperature, contacting with the modified ceramsite biomembrane packing and purifying, which purified flue gas is discharged via the column top; and spraying the nutrient fluid rich in high concentration of the desulfurization strain through the top to the modified ceramsite biomembrane packing, thereby the sulfur-bearing pollution source in the flue gas is degraded, so as to discharge a purified flue gas satisfying the environmental requirements.
A modified ceramsite having a density of about 2.1-about 2.5 g/cm3, a specific surface area of about 0.4-about 0.8 m2/g, a porosity of about 0.5-about 0.7, a pH value at isoelectric point of about 7.5-about 9.0, and/or a surface pH value of about 5.0-about 6.0.
A process of removing SO2 from flue gas comprising utilizing a biomembrane trickling filter comprising a packing, in which the biomembrane trickling filter has a principle section of a packed column and further comprises a liquid circulation system and a gas circulation system, wherein the packing is a modified ceramsite obtained from chemically modifying a ceramsite, wherein the modified ceramsite has performance parameters of:
A process for chemically modifying a ceramsite, the process comprising:
Dependencies are inferred from the claim text.