36results about How to "Excellent purification" patented technology

The invention discloses a novel efficient automatic indoor air purification device and belongs to the technical field of environment-friendly air purification. The indoor air purification device specifically comprises a shell, a circuit board, an air guiding device, an air dust collection device, a negative ion generation device, an ultraviolet sterilization device, a photocatalytic oxidation device, an operation panel and a wireless remote controller, wherein a draught fan serves as a power source of the air guiding device. A negative ion technology, an ultraviolet sterilization technology, a photocatalytic oxidation technology, a silver ion sterilization technology and a filtering adsorption technology are integrated. The shortages that according to an existing air purification device, the functions of sterilization, disinfection and removal of suspended particles, volatile harmful gases, peculiar smells, ozone and other harmful gases are single or the removal effect is poor, energy consumption is large, secondary pollution is caused, cost is high, and the environment-friendly performance is poor are overcome. The novel efficient automatic indoor air purification device is complete in air purification and disinfection effect, simple in structure, high in efficiency, low in energy consumption and noise, capable of saving maintenance cost, long in service life and capable of being practically applied to various indoor environments such as medical treatment institutions, enterprise and public institutions, public occasions, storerooms, workshops and houses.

Disclosed are: a catalyst which can utilize magnesium aluminate (MgAl2O4) as a catalyst carrier, has improved heat resistance, and enables the improvement in NOx purification rate readily, or a catalyst carrier; and a process for producing the catalyst or the catalyst carrier. Specifically disclosed are: a catalyst carrier or a catalyst, which can be produced through an aqueous solution preparation step (S1), an aqueous solution filling step (S2), a drying step (S3), a pre-firing step (S4) and a firing step (S5), and which comprises magnesium aluminate (MgAl2O4) having a specific surface area of 80 to 150 (m2 / g) and a pore volume of 0.45 to 0.65 (ml / g), wherein a noble metal can be supported on the catalyst carrier or the catalyst; and a process for producing the catalyst carrier or the catalyst.

The invention provides a twin tower tandem exhaust gas purifying processing combination device which adopts a biomembrane packing tower system utilizing catalytic oxidant cyclically spraying liquid in the front and a biomembrane packing tower system utilizing pH buffering agent cyclically spraying liquid in the rear, which can carry out purifying processing to simultaneously remove the SQ2 and the NOx in the exhaust gas and to obtain by-products, namely, the utilizable sulphuric acid and nitrating acid products. The invention is characterized in that desulphuricants and denitrifier complex bacteria with the performance of simultaneously removing SQ2 and NOx in the exhaust gas under the conditions of liquid-phase catalyzed oxidation and pH acid environment can be obtained by screening and culturing and domesticating, and the composite bacteria biofilm to manufacture the biomembrane packing tower which is arranged in the tandem front end and is mainly used for removing SQ2; and the biomembrane packing tower which is mainly used for removing NOx in the rear is manufactured by adopting the denitrifier complex bacteria biofilm with the performance of removing NOx in the exhaust gas under the condition of pH neutral environment through screening and culturing and domesticating.

The invention discloses a method for preparing a polymerized aluminum-iron flocculant from steel wire rope pickling sludge (abbreviated as acid sludge). The method adopts hydrochloric acid and sulfuric acid as extraction agents respectively, extracts metal iron ions and aluminum ions in calcium mud and sodium mud, removes lead ions therein through ion exchange resin, and further processes the extract into a polymerized aluminum-iron flocculant to realize The resource utilization of calcium mud and sodium mud, by adding cement to the calcium mud residue and sodium mud residue to solidify, realize the stabilization and harmlessness of heavy metals in the residue, and use deionized water to regenerate the saturated ion exchange resin During the process, sodium hydroxide solution is used to treat the wastewater generated during the regeneration process, so that the wastewater can be discharged up to the standard. The method has a recovery rate of more than 90% for iron and aluminum in the acid mud; the flocculant has excellent purification performance for domestic sewage.

The invention discloses a preparation method of a titanium dioxide-molybdenum trioxide / platinum-carbon catalyst. The preparation method comprises the following steps of firstly, preparing nano particles of a TiO2-MoO3 core-shell structure; secondly, preparing a mixed system; thirdly, preparing a mixed system carrying platinum metal; and fourthly, performing reduction reaction so as to obtain the TiO2-MoO3 / platinum-carbon catalyst. According to the preparation method, titanium dioxide and molybdenum trioxide are combined to prepare nano particles of the TiO2-MoO3 core-shell structure, then thenano particles are combined with the platinum-carbon catalyst so as to obtain the TiO2-MoO3 / platinum-carbon catalyst. The catalyst is far better than a pure photocatalyst medium in air purification, can be widely used for purifying air in limited spaces like a room, an underground garage, and a tunnel, can improve the environment of the spaces remarkably, is easy in step to prepare, and has high practical value.

A straddle-type vehicle has a body frame, an engine unit having an engine and swingably supported by the body frame, a rear wheel supported at a rear end portion of the engine unit, a rear fender (80) supported on the engine unit so as to swing relative to the body frame along with the rear wheel, and covering a portion of the rear wheel, and an intake pipe (54) for introducing air to the engine, and air cleaner (100) connected to the intake pipe (54). The rear fender (80) has an upper portion (82) positioned above the rear wheel and side portions (84A), (84B) positioned beside the rear wheel. The air cleaner (100) forms at least the upper portion (82) of the rear fender (80).