46results about How to "Solve separation and recycling" patented technology

The invention discloses a method for preparing GBL (Gamma-Butyrolactone) by taking furfural as a raw material. The method comprises two steps of oxidizing the furfural to prepare 2(5H)-furanone and hydrogenating the 2(5H)-furanone to prepare the GBL, wherein the 2(5H)-furanone can be synthesized by the furfural by taking homogeneous-phase acid or solid acid as a catalyst and taking hydrogen peroxide as an oxidant under the conditions of mild temperature and pressure. The 2(5H)-furanone is further selectively hydrogenated to obtain the GBL under the effect of a metal catalyst in a hydrogen atmosphere. The GBL can be generated by commonly hydrogenating the 2(5H)-furanone serving as a main product and C4 binary acid serving as a byproduct of the oxidation of the furfural in situ under appropriate conditions. According to the method, high-efficiency conversion from the furfural serving as a biomass raw material to the GBL serving as a fine chemical product is realized; the method has a great application prospect.

The invention discloses a stripping, sorting and recycling device for waste and old optical cables, which comprises a casing, a working chamber is arranged inside the casing, a feeding port is provided through the left side wall of the working chamber, and a feeding port is provided on the right side of the feeding port. There is a feeding device for feeding waste optical cables into the device. The feeding device includes two guide rollers that are symmetrical up and down with respect to the feeding port. The right side of the guide rollers is provided with a ring cutting device for cutting waste and old optical cables. The device cuts the outer wall of the optical cable through the gear meshing transmission of the optical cable entering the device by setting a ring cutting mechanism, and fixes the outer wall of the optical cable by stretching the outer wall of the optical cable inside the optical cable and piercing the outer wall of the optical cable outside the optical cable at the other end of the cutting mechanism. The purpose of stripping the outer wall of the optical cable is achieved by setting the traction mechanism, and the outer wall of the optical cable and the core of the optical cable are respectively dropped into two collection chambers for classification and collection.

The invention discloses a process for coating a Bi2O3 / TiO2 photocatalysis film on the surface of a hollow lightweight glass sphere and discloses application of the hollow lightweight glass sphere with a surface coated with the Bi2O3 / TiO2 photocatalysis film. According to the process, bismuth nitrate, titanium tetrabutoxide, nitric acid, water, pentanediol, polyethylene glycol, acetylacetone and the like are adopted for forming a precursor solution; the sphere is rotatably coated with a film and then is quickly dried to obtain the uniform Bi2O3 / TiO2 catalyst film; the glass sphere with the Bi2O3 / TiO2 photocatalysis film coated on the surface is placed into a suspending type photocatalysis reactor and can be used for degrading organic pollutants such as methyl orange under illumination, and the glass sphere is excellent in photocatalysis performance; the process has the advantages that the raw materials are easily available, the preparation cost is low, the film coating process is simple, and the condition is easy to control; and the liquid film on the surface of the glass sphere is thin, has high light transmittance and high transfer efficiency, does not need to be separated and recycled and is capable of continuously working; and simultaneously, the process provides reference value respect to other film coating technologies and brings basic theoretical basis for designing and amplifying the photocatalysis reactor in future.

The invention provides a method adopting the microbe microbial enhanced oil recovery (MEOR) technology for water-based extraction of bitumen in oil sands and belongs to the field of oil sand separation technology. According to the method, the MEOR technology is adopted to perform the cultivation treatment of microbial bacteria before the water-based extraction to the oil sands, and the physico-chemical property of the oil sands is influenced through the selective action of the microbial bacteria on certain macromolecular materials in the bitumen in the oil sands, so that the recovery rate of the bitumen is effectively increased, the quality of the bitumen is improved, and the problems in bitumen separation recovery of oil sand mines, particularly high-electrolyte and high-clay-content oil sand mines, weathered oil sand mines or other mines which are difficult to treat. The practice proves that through the adoption of the method provided by the utility model for water-based extraction of the bitumen in the oil sands, the recovery rate is up to 98 percent. Therefore, the method has a favorable application prospect in industrial production of oil sand separation extraction.

The invention discloses a bismuth phosphate thin film with photoresponse characteristic, and a preparation method and application thereof. Bi(NO3)3 and Na3PO4 are respectively dissolved in ethylene glycol to be prepared into a solution A and a solution B in certain concentration; the solution B is slowly and dropwise added into the solution A; a certain amount of concentrated nitric acid is added; a colorless clear BiPO4 precursor solution is obtained; after precursor solution ageing, colorless clear BiPO4 sol is obtained. A monoclinic phase structure BiPO4 thin film with photoresponse characteristic is prepared on a conducting glass substrate by a layer-by-layer annealing process and a spin-coating method of a sol-gel method. The equipment requirements are simple; the experiment conditions are mild; the prepared sol can keep stable for a long time; the sol concentration is precise and controllable; the photocurrent of the prepared BiPO4 thin film reaches 0.861 to 0.934mA / cm<2> under simulated sunlight; the thin film can be used for the organic pollutant degradation aspect.