33results about How to "Mild working conditions" patented technology

The present invention relates to process of enriching ionic liquid from water solution. Ionic liquid and salt in water solution may form a double water phase system, including the upper rich ionic liquid phase capable of enriching ionic liquid in water solution. By means of lowering the temperature of lower rich salt phase to 0 deg.c to -20 deg.c, a new double water phase system may be formed for further enriching ionic liquid. The present invention can reach total ionic liquid recovering rate up to 95-99 % and required water evaporating quantity only about 10 % of conventional process. The present invention can recover and reuse ionic liquid and salt, and has the advantages of great treating amount, simple apparatus, easy operation, low cost, easy combination of several stages, high economic benefit and environment friendship.

The invention relates to a method for separating ultra-fine particles, wherein it adjusts the components of dual-liquid system, or adds extractive to adjust the system which can separate ultra-fine particles into upper phase or lower phase; eccentrically treating two phases to obtain ultra-fine particles. And the inventive system can be repeated used. The invention has simple device and low cost.

The invention discloses a solar semiconductor refrigeration type water collector. The solar semiconductor refrigeration type water collector comprises a solar power generation panel, a voltage regulation module, a storage battery and a water collection device, wherein the solar power generation panel is connected with the storage battery through the voltage regulation module; the storage battery is connected with the water collection device; the water collection device comprises a heat radiator, a heat pipe, a semiconductor refrigeration assembly, a cylindrical water collection tank and a water storage tank; a water inlet of the water storage tank is connected with a water outlet of the water collection tank; the water collection tank is internally provided with an annular cold air channel; the cold air channel is internally provided with a separation plate; an air inlet and an air outlet, which are communicated with the cold air channel, are formed in the upper end of the water collection tank; the air inlet and the air outlet are located on the two sides of the separation plate respectively; the air inlet is provided with an air blowing fan; one end of the semiconductor refrigeration assembly is inserted into the cold air channel; and the other end of the semiconductor refrigeration assembly is connected with the heat radiator through the heat pipe. The solar semiconductor refrigeration type water collector has the advantages of simple structure, convenience for installation, low environment requirements and high water collection efficiency.

The invention relates to a biological oil removing agent for permanent-magnet materials. The biological oil removing agent is prepared according to the following steps: diluting the biological oil removing agent with water in the volume ratio of 1:(19-99) to obtain a diluent; and regulating the pH value of the diluent to 6.0-9.0 by using two of phosphoric acid, citric acid, sodium citrate and trisodium phosphate, and keeping the temperature of the diluent at 10-40 DEG C for later use. The biological oil removing agent can be used for thoroughly removing oil stains in the permanent-magnet material under the condition of mild pH value without generating substances harmful to the environment. The biological oil removing agent is environment-friendly. Meanwhile, microbes in the biological oil removing agent are cheap and are easy to obtain, and the biological oil removing agent has strong continuous oil removal capability, therefore, the oil removal cost can be greatly lowered by using the biological oil removing agent.

The invention discloses a rotary-type bioreactor, comprising a reaction tank, wherein bacterium solution is filled in the reaction tank; a first water inlet and a first water outlet are formed at the left end of the reaction tank; a second water outlet is formed at the right end of the reaction tank; a drum is arranged in the reaction tank; the drum sinks in the bacterium solution, and the interior of the drum is hollow; a hole is formed on the drum, and the aperture of the hole is less than the aperture of a reaction material; and a backflow tube is arranged in the drum; and a hole is formed on the backflow tube. Via the mode aforementioned, the rotary-type bioreactor adopting the scheme has the advantages of being less in pollution, temperate in working condition, short in flow, low in cost, less in investment and the like, and has the characteristic of being wide in mineral applicability in case of being applied to mining metallurgical engineering; oxygen is provided for the bacterium solution via the rotation of the drum so as to directly culture the bacterium solution, and the operation is convenient and fast; the rotary-type reactor performs reaction by means of injecting the bacterium solution, thus avoiding the damages of a shearing force in the normally-used stirring mode on the cells of bacteria, and contributing to the survival of the bacteria; and the reaction of the rotary-type reactor during a rotation process is uniform.

The invention relates to a comprehensive utilization method of a pumpkin. In the method, added amount of substances is based on weight of the pumpkin; and the pumpkin is taken as a raw material for step-by-step extraction to respectively obtain pumpkin polysaccharide, pectin and pumpkin powder by utilizing a biotechnology and a membrane separation technology. The method comprises the following steps: firstly washing and cutting the pumpkin into blocks, removing seeds, pulping, carrying out water extraction at moderate temperature and centrifugal separation, carrying out acid precipitation on the obtained water extract, concentrating the obtained supernate through a nanofiltration membrane, and spray-drying to obtain the polysaccharide; extracting residues after water extraction by utilizing acid water, carrying out centrifugal separation, removing impurities from the obtained supernate through a microfiltration membrane, concentrating the supernate through a nanofiltration membrane, carrying out acid precipitation on the obtained concentrated solution, carrying out centrifugal separation, and freeze-drying the obtained precipitate to obtain the pectin; spray-drying the supernate to obtain the polysaccharide; and mixing the remaining residues and filtered liquor, grinding by a colloid mill and spray-drying to obtain the pumpkin powder. The comprehensive utilization method has the advantages that effective substances of the pumpkin are fully utilized, and process is simple and feasible, thus being applicable to industrialized production.

The invention provides a preparation method of a polyacid and enneacobalt octasulfide co-modified titanium dioxide nanotube array photoelectrochemical oxygen evolution electrode. The prepared polyacid and enneacobalt octasulfide co-modified titanium dioxide nanotube array composite film photo anode can be used for photoelectrochemical water decomposition and oxygen evolution. The composite film photo anode is the titanium dioxide-enneacobalt octasulfide-polyacid composite film photo anode which is formed by using a titanium dioxide nanotube array as a main body and co-modified by enneacobalt octasulfide and Keggin type phosphotungstic acid. Under indoor temperature environment and irradiation of a xenon lamp, the composite film photo anode has good photoelectrochemical water decomposition performance. The preparation method of the titanium dioxide-enneacobalt octasulfide-polyacid composite film electrode is simple, quite low in cost, capable of achieving efficient and stable photoelectric water decomposition without sacrificing a reagent, a protective layer and a buffer solution, capable of achieving high-efficiency conversion from optical energy to chemical energy and applicable to development and production of the novel photoelectrochemical water decomposition and oxygen evolution electrode.

The invention relates to a method for two-phase extraction and enrichment of aromatic compounds in water. A hydrophilic ionic liquid-salt two-phase system is used to extract and recover aromatic compounds in aqueous solution to achieve the purpose of enriching and recovering aromatic compounds from wastewater. The extracted ionic liquid phase can recover aromatic compounds by distillation or vacuum distillation, and the ionic liquid can be enriched and recovered by adding salt for recycling. For general compounds such as p-nitrophenol or phenol, the extraction rate can reach more than 75% after one enrichment, and for some compounds such as nitrobenzene, the extraction rate can reach 90% after one enrichment.