39results about How to "Intensity can be controlled" patented technology

The invention discloses a synthesis method of chromium 2-pyridylformate, which comprises the following steps: by using 2-methylpyridine, potassium permanganate and chromium chloride alcoholic solution as raw materials, adding a phase-transfer catalyst to synthesize the chromium 2-pyridylformate, wherein the phase-transfer catalyst is a quaternary ammonium salt or quaternary phosphonium salt in onium salt phase-transfer catalysts, preferably ammonium tetrabutylbromide, ammonium tetrabutylchloride or phosphonium methyltriphenylbromide. The method disclosed by the invention uses the phase-transfer catalyst to enable the sufficient reaction of 2-methylpyridine in an inorganic reaction environment, thereby enhancing the reaction yield (up to higher than 71%); the methanol or ethanol is used as the solvent to enhance the yield of the reaction step; and the solvent is recyclable, thereby saving the raw material cost, promoting the effective performance of the complex reaction, enabling the product to precipitate sufficiently, enhancing the maximum product yield by nearly 40%, and ensuring the yield and quality of the product.

The invention relates to the technical field of processing of dehydrated vegetables, in particular to combined hot-wind continuous drying equipment. The combined hot-wind continuous drying equipment comprises a hot blast stove, a wind distribution chamber and a continuous dryer. The hot blast stove is connected with the wind distribution chamber. The wind distribution chamber is connected with the continuous dryer. The hot blast stove comprises a natural wind inlet and a hot wind outlet. The hot wind outlet of the hot blast stove is connected with the wind distribution chamber. The wind distribution chamber comprises a main wind chamber body and at least three distribution air ducts connected with the main wind chamber body. Hot wind is distributed into the distribution air ducts through the wind distribution chamber and then enters at least three drying inner cavities. Along with the continuous lengthening and even turning of a hot wind drying chamber, the wind distribution chamber can be lengthened accordingly, the distribution air ducts are enlarged accordingly, and the drying inner cavities are enlarged accordingly so that the hot wind can still be distributed into each drying inner cavity, and accordingly the hot wind is blown out below a screen to be used for drying vegetable materials; the equipment is reasonable in structural design, and the temperature and the strength of the hot wind can be controlled.

The invention relates to the technical field of hazardous waste pretreatment and particularly relates to a treatment method of reactor residues of 2-octyl-3(2H)-isothiazolone. The method comprises (1) distilling to obtain a solvent of which the mass is 45 to 50% the total mass of the mother liquor, and (2) adding a liquid alkaline of which the mass is 50 to 60% that of the mother liquor into the reactor residues drop by drop through a liquid alkaline dropwise addition pot in 4 to 5h, heating the materials to 60 to 70 DEG C, and stirring the mixture for 10 to 15h, wherein in stirring, low temperature water at a temperature of 8 to 10 DEG C is fed into a jacket of the treatment reactor so that the mixture is cooled to 25 to 27 DEG C. The method is simple in operation, does not need to be manually operated by tools such as a feeding pump, utilizes pipelines prepared in the workshop and is operated closedly.

The invention aims to provide a sewage treatment and power generation device based on nano metal powder. The sewage treatment and power generation device comprises a sewage storage tank, a power generator and a condenser, wherein a nano metal powder container filled with the nano metal powder is arranged above the sewage storage tank and is communicated with the sewage storage tank through a nano metal powder inlet, a sewage inlet is formed in the sewage storage tank, the sewage storage tank is connected with a pipeline, the power generator and the condenser are sequentially arranged on the pipeline, and a water outlet is formed in the condenser. Sewage is sterilized and disinfected by using heat released by reaction of the nano metal powder and water, the reaction is rapid and the effect is remarkable; through controlling the particle diameter of the nano metal powder, the intensity of the reaction can be well controlled so that the reaction is safely and smoothly carried out; water vapor generated by the sewage is utilized to push the power generator to generate electricity, so that the energy utilization rate is increased; the water vapor is condensed and recovered after applying work, so that resource recycling is realized.

The invention provides high-purity diallyl ammonium chloride and a preparation method thereof. According to the method, diallylamine is dissolved in a nonpolar organic solvent in a certain ratio, hydrogen chloride gas is slowly introduced into an organic liquor for a reaction under the cooling condition, a product obtained after the reaction is subjected to liquid-solid separation, a solvent on the surface of a solid is dried, and the high-purity diallyl ammonium chloride product is obtained. The diallylamine is dissolved in the nonpolar organic solvent, so that the reaction concentration of diallylamine is controllable, the nonpolar organic solvent can better transfer heat, and the system temperature is kept stable. Hydrogen chloride gas is introduced into a reactor, hydrogen chloride gasand diallylamine react on the bubble surface by use of the principle of surface reactology, the problem of violent reaction due to direct addition of hydrochloric acid or hydrogen chloride gas to diallylamine is solved, and the safety is improved.