5 results about "Deoxidization" patented technology

The invention relates to a method for biologically synthesizing natural gas from coke oven gas. The method comprises the following steps: (1) introducing organic wastes, the coke oven gas and aerobic activated sludge into a sealed deoxidization bio-reactor to perform a microaerobic biological deoxidization reaction; (2) introducing a nitrogen-free culture medium, the deoxidized coke oven gas and free-living anaerobic nitrogen-fixing bacteria into a sealed denitriding bio-reactor to perform an anaerobic biological denitriding reaction; (3)introducing the organic wastes subjected to the microaerobic biological deoxidization reaction from the sealed deoxidization bio-reactor, and a biogas producing inoculum into a sealed biogas producing reactor to perform biogas production by anaerobic fermentation; (4) performing solid-liquid separation on fermentation residues after biogas production by anaerobic fermentation, wherein a filtered biogas liquid contains rich nutriments and serves as a culture medium for subsequent methane production by anaerobic fermentation; and (5) introducing the deoxidized/denitrified coke oven gas, the biogas, the filtered biogas liquid and methane producing bacteria into a sealed methane producing reactor to perform methane production by anaerobic fermentation.

The invention discloses a modification technology of an aluminum deoxidization product of non-oriented silicon steel. After vacuum decarburization and deoxidization through the RH procedure, powder spray is conducted in a vacuum chamber, so that the aluminum deoxidization product is changed into liquid-state calcium aluminate from aluminum oxide, the powder agent for powder spray comprise not smaller than 90% of CaO, 2-5% of CaF2 and 2-5% of Al2O3. The modification technology of the aluminum deoxidization product of the non-oriented silicon steel can solve the flocculating flow problem of a continuous casting nozzle, achieves sequence casting and can lower the product surface inclusion defect, the number of sequence casting heats reaches 12 or over, and the product surface inclusion is greatly lowered.