4results about How to "Save power cost" patented technology

This invention relates to the field of pharmaceutical technology and discloses a method for improving the clarity and color of oxybuprocaine hydrochloride solution, comprising the following steps: S110: Oxoplasmin is added to a reactor, and an organic solvent is added while stirring to control the reaction system at 0-10°C; an antioxidant is added. S120: Hydrochloric acid is slowly added in batches to the temperature-controlled reaction system. After the addition is complete, the temperature is controlled at 0-10°C for 2-4 hours, then the temperature is raised to 40-50°C for 2-4 hours, and activated carbon is added. S130: The mixture is filtered while hot, and solvent is slowly added dropwise to the filtrate until the product precipitates. After slurrying at 25-35°C for 2 hours, the mixture is filtered, and the filter cake is vacuum dried in a vacuum drying oven at 40-50°C for 12-16 hours to obtain oxybuprocaine hydrochloride. This invention provides a novel method for obtaining oxybuprocaine hydrochloride by adding antioxidants and activated carbon in the salt formation step. The clarity and color of the resulting product solution meet pharmacopoeia requirements.

The utility model relates to the technical field of fixing tools, and particularly discloses a camshaft grinding fixing device which comprises a base, a lifting frame, a fixing plate, a sliding plate, a sliding block and a grinding wheel, the lifting frame is slidably connected to the base in the vertical direction through a first linear driving piece, and the fixing plate is fixedly arranged on the lifting frame; the fixing plate is rotationally connected with a rotating table in the transverse direction through a first rotation driving mechanism, and the rotating table is provided with a clamping mechanism used for clamping the cam shaft. The sliding plate is slidably connected to the lifting frame through an adjusting mechanism, and the sliding plate is rotationally connected with an abutting block in the transverse direction. The sliding block is slidably connected to the base, the grinding wheel is rotationally connected to the sliding block, a second rotation driving mechanism used for driving the grinding wheel to rotate is arranged on the base, and a second linear driving piece used for driving the sliding block is arranged on the base. The camshaft grinding and polishing device has the effect that the problems that when a worker grinds and polishes the camshaft, operation is tedious, the labor load is increased, the machining precision is not high, and the camshaft is prone to being damaged are solved.

The application provides a method for controlling and repairing diffusion of organic pollutants in a coastal aquifer to seawater, which comprises the following steps: 1) determining the conductivity of the coastal groundwater in the contaminated area and the conductivity of the seawater in the sea area; 2) dividing the coastal groundwater area and the seawater area connected therewith into a land-side area, a sea-side area and a salt ion overlapping area; 3) expanding the salt ion overlapping area to the inland side based on the classification of the adsorption coefficient of the organic pollutants and the classification of the biodegradability of the organic pollutants and determining the area as an organic pollutant overlapping area, the area extending to the inland side of the organic pollutant overlapping area being a land-side contaminated area, and the area extending to the sea area of the organic pollutant overlapping area being a sea-side contaminated area; 4) tracing the pollution data of the land-side contaminated area; setting an organic pollutant adsorption device in the organic pollutant overlapping area to perform adsorption repair; and determining whether to perform intensified repair and / or continuous monitoring according to the pollution data of the sea-side contaminated area.

The utility model belongs to wastewater treatment technical field, especially suitable for high nitrogen phosphorus sewage's high -efficient denitrification and phosphorus removal device of high nitrogen phosphorus, it solves the problem of unable to realize resource recovery. The high -efficient denitrification and phosphorus removal device suitable for high nitrogen phosphorus sewage, include: pretreatment pool, be used for filtering suspended impurities in wastewater, anoxic pool is connected with the effluent of pretreatment pool, is used for denitrification, anaerobic tank is connected with the effluent of anoxic pool, is used for release phosphorus, aerobic tank is connected with the effluent of anaerobic tank, is used for nitrification reaction and phosphorus absorption, and its effluent is connected to anoxic pool through reflux pipe, sedimentation tank is connected with the sludge outlet of aerobic tank, is used for mud -water separation, and the sludge outlet is connected with anaerobic tank through reflux pipe, phosphorus recovery tank is connected with the supernatant outlet of sedimentation tank, is used for getting the precipitated guano through adding magnesium source, and the mixed liquid containing guano is discharged through final discharge port. The effect that phosphorus is recycled in the form of guano is realized, and it is favorable for improving economy.