4 results about "Low oxygen" patented technology

The invention relates to the technical field of environmental protection, specifically to a special preparation device for a boiler flue gas desulfurization tower repairing agent. The special preparation device for the boiler flue gas desulfurization tower repairing agent is characterized by comprising a closed type circulation low-oxygen boiler tail gas mixing tower system, an A component preparation system, a B component preparation system, a double spiral agitator and a supporting frame assembly. The closed type circulation low-oxygen boiler tail gas mixing tower system comprises a closed type circulation low-oxygen boiler tail gas mixing tower, a multicyclone, a Roots blower assembly, a circulating fluidized bed boiler fly ash spiral conveyor, a connecting air pipe assembly and a circulation low-oxygen boiler tail gas supplement port. The closed type circulation low-oxygen boiler tail gas mixing tower system adopts tail gas from a boiler flue gas dust remover as a medium for conveying circulating fluidized bed boiler fly ash, and has the characteristics of low oxygen, dryness and cleanness, the activity of SiO2 particles of the circulating fluidized bed boiler fly ash can be maintained, and the boiler tail gas is used as the gas medium to complete the technological processes of conveying, mixing and separating, so that waste is turned into wealth substantially, and high-value utilization of the boiler tail gas is realized.

The present invention relates to a gasoline environmental-protection and energy-saving additive and an environmental-protection and energy-saving gasoline, and belongs to the energy source cleaning technology. The gasoline environmental-protection and energy-saving additive is characterized by comprising by weight: 0.003-0.005 part of biological enzyme, 0.001-0.003 part of a coenzyme preparation, 0.2-0.4 part of a plant extract, and 35-45 parts of a petroleum distillate adopted as a carrier. According to the present invention, with the gasoline environmental-protection and energy-saving additive, the gasoline viscosity can be reduced so as to make the gasoline become the oxygen-rich fuel, the burnout characteristic and the low oxygen combustion performance of the gasoline can be improved, and the emissions of the nitrogen oxides, the sulfur oxides and the hydrocarbons after the gasoline combustion can be reduced.

The invention relates to a dendrobium nobile preservation method which comprises the following steps: providing low-oxygen gas into an airtight enclosure, and controlling the oxygen concentration of the low-oxygen gas to be 2%-10%; maintaining the temperature in the airtight enclosure, wherein the temperature in the airtight enclosure is -10-10 DEG C; and maintaining the environment in the airtight enclosure for a preset time. According to the dendrobium nobile preservation method, the phenomena of mildewing, taste changing and water loss of the dendrobium nobile are reduced, the current storage situation that the dendrobium nobile is serious in water loss and prone to rotting is improved, and the storage and preservation period of the dendrobium nobile is prolonged.