2results about How to "Short purification cycle" patented technology

The invention is applicable to the technical field of crude oil treatment, and provides a method for separating and screening crude oil degrading functional bacteria. Comprising the following steps: S1, collecting an environmental sample polluted by crude oil for a long time; s2, inoculating the environmental sample into a gradient carbon source inorganic salt enrichment culture medium for enrichment culture to obtain an enrichment culture solution; s3, performing gradient dilution on the enrichment culture solution, coating the enrichment culture solution on a selective solid culture medium containing crude oil, and culturing to obtain a single colony; s4, picking single colonies, inoculating the single colonies into a liquid culture medium containing crude oil, and determining the crude oil degradation rate of the single colonies; s5, screening out strains with the crude oil degradation rate higher than a preset threshold value, namely the crude oil degradation functional bacteria. According to the method, the crude oil is used as a unique carbon source, infectious microbes which can only utilize an easily degradable carbon source are eliminated from the source, rare strains which really have a crude oil-enzyme system are enriched, the abundance of target bacteria can be improved by 2-3 orders of magnitude through first passage, and the subsequent purification period is shortened by more than 50%.

The present application relates to hydrogen purification technical field, a kind of high-efficiency stable palladium tube hydrogen purifier, comprising: shell assembly, shell assembly is made of shell, heat preservation layer and inner container, and heat preservation layer is filled in the gap between shell and inner container, the middle of one end of inner container is fixed with the original gas inlet pipe extending out of shell, and the one end of original gas inlet pipe is fixedly installed with inlet valve;Feed pretreatment component, feed pretreatment component is set in the one end of inner container close to original gas inlet pipe, and its top extends to the top side of shell;End cap, end cap is fixedly installed in the one end of shell away from original gas inlet pipe, and the middle of end cap is fixed with hydrogen outlet pipe.The present application realizes the multistage depth purification of hydrogen, greatly improves the recovery rate and purity of hydrogen after purification, simultaneously, high-efficiency breaks the laminar boundary layer formed by raw material gas on the surface of palladium tube body, reduces the resistance of hydrogen molecules from raw material gas main body to spread to the surface of palladium tube, and realizes the double energy saving of tail gas waste heat recovery and tail gas kinetic energy utilization.