34results about How to "Economic benefit maximization" patented technology

The invention discloses a reliability measurement method for a mechanical and electrical product, and relates to a digital computation method special for specific application. Random information and fuzzy information in generalized stress s and generalized strength r are comprehensively processed in a unified mode to obtain the reliability of the mechanical and electrical product, wherein each of s and r can be any combination of random variables and fuzzy variables; alpha belongs to U; vs(x) is a probability density function or a membership function of s, wr(y) is a probability density function or a membership function of r, and U is an effective domain of discourse of s and r; and an ordered pair (P, Q) consisting of P and Q is mapped into a point on a two-dimensional coordinate plane, all ordered pairs obtained when alpha is changed form a reliability curve, an area enclosed by the curve and two coordinate axes is R, and both the curve and the R are reliability measurement results. The shortcoming that the random variables and the fuzzy variables are required to be differently processed in the conventional method is overcome; the reliability measurement method is wide in application range; and the reliability measurement results imply much information, and a bridge between a probability reliability theory and a fuzzy reliability theory is built.

The invention discloses a method for preparing high-purity quartz sand. The method comprises the following steps of: dividing quartz ore into blocks with size of 30mm*30mm for classification; roughly washing and calcining the quartz ore; calcining the quartz ore twice at the furnace temperature of between 840 and 880 DEG C and at the furnace temperature of between 890 and 910 DEG C; performing water-quenching and pulverizing the quartz ore into quartz sand with particle size of between 0.4 and 0.1mm; placing the pulverized quartz ore sand into a reaction tank; adding ultrapure water with purity level of between 14.5 and 15.5M which is 65 to 75 percent of the volume of the reaction tank, the quartz sand which is 30 to 40 volume percent of the ultrapure water and the mixture of concentratedhydrochloric acid or hydrochloric acid with concentration of 35 to 37 percent and hydrofluoric acid into the reaction tank in turn, wherein based on the ultrapure water, the mixture of the concentrated hydrochloric acid or hydrochloric acid is 5 to 8 volume percent; keeping the temperature of the reaction tank at 60 to 80 DEG C; stirring the mixture in the reaction tank for 20 to 30 minutes, precipitating the mixture for 10 to 15 minutes and then discharging the primary liquid out of the reaction tank; adding a proper amount of ultrapure water again; stirring and cleaning; conveying the mortar of the reaction tank to a cleaning tank; cleaning the mortar in the cleaning tank by using the ultrapure water; performing liquid-solid separation on the quartz ore; drying the quartz ore under the environment with temperature of between 175 and 185 DEG C; and performing magnetic separation, and screening and packaging the quartz ore. Thus, resources are protected and fully utilized, and the maximization of the economic benefit is realized.

The invention discloses a comprehensive recycling method for waste lithium ion batteries. Using waste lithium ion batteries as raw materials, a process for jointly preparing battery-grade lithium carbonate and lithium hydroxide products is developed, and metals such as cobalt, nickel and manganese can be simultaneously recovered for preparing precursors. It can also recover and extract lithium elements to prepare battery-grade lithium carbonate and lithium hydroxide for positive manufacturing of positive electrode materials, which can not only recycle waste to protect the environment, but also maximize economic benefits and save resources.

The invention discloses a railway tunnel outlet clapboard type buffering structure. A mold box is arranged on each of the two sides of a tunnel outlet; the side wall, close to the middle line of a tunnel, of each mold box is an opening surface; at least one first clapboard parallel to the opening surface is arranged at each mold box; the two ends of each first clapboard are fixedly connected with the top surface and the bottom surface of the corresponding mold box; the sum of the area of the first clapboards at the same mold box is smaller than the area of the opening surface of the mold box; second clapboards are connected with the first clapboards and extend into the mold boxes. Due to the fact that the mold boxes are arranged at the tunnel outlet and the clapboards are arranged at the mold boxes, the defect of tunnel outlet micropressure wave effect due to disability of building a complex buffering structure because of the restraint of landform is relieved, the clapboards can distribute compression wave, the propagation energy of the compression wave is separated, the pressure peak of the micropressure wave is reduced, the micropressure wave effect at the outlet can be obviously relieved, under the condition of the same construction cost, the pressure peak of the micropressure wave at the outlet is greatly reduced, economic benefit is maximized, and the structure has relatively high practicability.

The invention relates to a production method of quickly-fermented high-umami seafood fermented soybean sauce, including; preparing small-molecular fish protein enzymatic hydrolysate by means of efficient biological enzymatic hydrolysis, and jointly fermenting through the small-molecular fish protein enzymatic hydrolysate with soybean meal and bran to obtain the seafood fermented soybean sauce. The method is low in cost and has a short production cycle, only 30 d, umami of the obtained soybean sauce can be improved, added value of low-value fishes can also be improved, low-value marine animal resources can be comprehensively utilized, and innovation is also made to zero addition of flavorings; meanwhile, the method of the invention is different from common low-salt solid fermented soybean sauces, the addition of the fish protein enzymatic hydrolysate enables the seafood soybean sauce to be healthy, environment-friendly, low in cost, good in property and excellent in umami, and compared with like products, the seafood soybean sauce will be popular with consumers owing to the excellent flavor.