86results about How to "High permeability μ" patented technology

The invention discloses a transparent and environment-friendly underwater consolidated solvent-free epoxy grouting material. The transparent and environment-friendly underwater consolidated solvent-free epoxy grouting material is prepared from a first component and a second component. The weight ratio of the first component to the second component is 100:(0.5-100). The first component is prepared from, by weight, 20-85 parts of epoxy resin, 25-80 parts of reactive diluent and 0.5-5 parts of interfacial modifier. The second component is prepared from, by weight, 10-95 parts of amine curing agent, 0-40 parts of waterproof dispersant and 0-20 parts of accelerant. The invention further discloses a preparation method and application of the transparent and environment-friendly underwater consolidated solvent-free epoxy grouting material. The grouting material is high in strength, good in water plugging and leakage preventing effect, good in waterproof performance and comprehensive mechanical property and low in toxicity, the preparation method is simple, and the application range is wide.

The invention relates to a process for treating excess sludge by utilizing fly ash. The method specifically comprises the following steps of: 1, feeding excess sludge to be treated which has the water content of between 80 and 90 percent, and fly ash in an amount which is 20 to 50 percent based on the mass of the excess sludge into a mixing agitator; fully mixing and reacting for 5 to 15min; feeding into a plate and frame dehydrator for dehydration to obtain sludge of which the water content is reduced to be between 35 and 45 percent; crushing the sludge into coarse particles with the particle size of between 3 and 5mm by using a sludge granulation device; feeding the sludge particles into a solar drying room, and drying for 24 to 48h at the temperature of above 40 DEG C and under the humidity of below 15 percent to ensure that the water content of the sludge is reduced to between 8 and 15 percent; and treating by sludge pulverization equipment and a high-speed airflow collision technology, wherein the particle size of sludge powder is 150 to 300 meshes and the water content is 5 to 10 percent after the treatment. The method has the advantages that: interstitial water, adsorbed water and capillary bound water in the excess sludge are absorbed into the fly ash; due to the characteristic of high permeability coefficient of the fly ash, the water in the fly ash is easily discharged; and the secondary pollution to the environment is avoided by appropriately treating the excess sludge.

The present invention relates to process of preparing chitosan/molecular sieve composite film for separating methanol/dimethyl carbonate. The preparation process includes the following steps: 1. dissolving chitosan in solvent comprising glacial acetic acid and water at 20-40 deg.c to obtain 0.8-2.5 wt% concentration film casting chitosan solution; 2. adding certain amount of ZSM-5 molecular sieve to the film casting chitosan solution; 3. debubbling the solution after stirring; and 4. casting film on glass plate. Compared with traditional chitosan film, the chitosan/molecular sieve composite film has higher mechanical strength and higher infiltrating and vaporizing performance for separating methanol/dimethyl carbonate mixture.

The invention discloses a heat pipe cyclic power machine consisting of a heat pipe and a turbine power generation system. The main body of the heat pipe consists of a pipe wall, a liquid absorption core and a working medium; the cavity body of the heat pipe consists of an evaporation cavity, a condensation cavity, a tapered pipe cavity, a vacuum heat insulation cavity and a nozzle; the liquid absorption core is arranged on the inner surface of the pipe wall of the heat pipe; the inner cavity of the lower part of the heat pipe is the evaporation cavity; the working medium is filled in the evaporation cavity; the inner cavity from the evaporation cavity to the nozzle is the tapered pipe cavity of which the cross sectional area is reduced gradually; the nozzle is formed on the upper part of the tapered pipe cavity; the vacuum heat insulation cavity is formed outside the tapered pipe cavity and the nozzle; the inner cavity of the upper part of the nozzle and the inner cavity outside the vacuum heat insulation cavity are condensation cavities; and the turbine power generation system consists of a multi-level blade, a supporting mechanism, a bearing, a rotating shaft, a magnetofluid sealing device and a power output system. The heat pipe cyclic power machine makes an actual contribution to aspects such as new energy power generation, energy saving and emission reduction, mechanical transmission and the like, and pushes the sustainable development of cyclic economy and the significant development of low-carbon economy and green economy.