36results about How to "Guaranteed acidity" patented technology

The invention relates to a method for preparing ferrous phosphate by using wet-process phosphoric acid, comprising the following steps: under the condition of 40-100°C, adding a basic magnesium compound to the phosphoric acid solution to adjust the pH to 3-6, and filtering to obtain a filter residue and a filtrate One; add ferrous sulfate in filtrate one and pass into carbon dioxide, add the pH of alkaline magnesium compound to adjust the solution to be 3-5, obtain product ferrous phosphate hydrate and filtrate two; The pressure of carbon dioxide above described filtrate one is 0.01 ‑1Mpa; add a basic magnesium compound to the filtrate two until the pH value of the solution is greater than 6, solid-liquid separation obtains the filter residue three and the filtrate three, and when the content of aluminum on a dry basis in the filter residue three is lower than 2%, the filter residue is used Substitute or partially replace the basic magnesium compound in step 2. Based on the method for preparing ferrous phosphate by wet-process phosphoric acid of the present invention, ferrous phosphate with relatively high purity can be prepared, and the preparation process is short, and the operation is simple, which reduces the cost of preparing ferrous phosphate by wet-process phosphoric acid.

The invention discloses a ternary non-aggregated power battery. The ternary non-aggregated power battery comprises positive and negative pole plates composed of plate grids and active substances, wherein the active substances are composed of lead powder and sulfuric acid; each plate grid is a ternary non-aggregated alloy plate grid; a positive pole plate grid is prepared from the following components in parts by weight: 0.02%-0.03% of Ag, 0.05%-0.06% of Ti, 0.9%-1.5% of Sn, 0.06%-0.08% of Ca and the balance of Pb; and a negative pole plate grid is prepared from the following components in parts by weight: 0.08%-0.09% of Ca, 0.02%-0.05% of Al, 1.0%-1.6% of Sn and the balance of Pb. According to the ternary non-aggregated power battery, Sn, Al and Ti elements are added into the plate grids and an alloy interface presents an amorphous-state polymer; the resistance of a resistance layer is obviously reduced; the circulating service life of the battery is prolonged and large-current charging and discharging performances of the battery are improved; and the corrosion resistance of the plate grids in sulfuric acid is improved and the service life of the battery is greatly prolonged.

The invention discloses a fast fermentation method of green leaf mustard. The fast fermentation method comprises three procedures including pretreatment, salting and sealing of a pool, wherein the salting procedure also comprises four substeps of salting lower green leaf mustard, adding auxiliary materials and aged salt water, crudely extracting myrosase and adding lactic acid bacteria. The fast fermentation method disclosed by the invention has the advantages that due to addition of glucose, the concentration of substrates can be increased, the growth factors of the lactic acid bacteria can be increased and the growth of the lactic acid bacteria can be accelerated; the green leaf mustard contains myrosinase for inhibiting the growth of the lactic acid bacteria, and due to addition of the myrosase, the myrosinase can be damaged and the fast fermentation of the green leaf mustard can be promoted; since the naturally-fermented lactic acid bacteria is insufficient, the acidity of the salted green leaf mustard can be increased. The fast fermentation method disclosed by the invention has the characteristics that the fermentation of the lactic acid bacteria can be accelerated, the acidity of the leaf mustard can be increased and the salting and fermentation time for the leaf mustard can be shortened.

The invention discloses a method of planting apple trees on a mountain slope. The method comprises the first step of preparation before planting, the second step of planting, wherein apple tree seedlings are sequentially planted in different cement frame sets from bottom to top along the mountain slope according to successively increasing heights, and the third step of fertilization, wherein one month after the apple trees are planted, a plurality of spherical gelatin sponges are placed nearby roots of each apple tree seedling. According to the method, the mountain slope with the gradient between 40 degrees and 50 degrees and the orientation to the south is selected, the apple tree seedlings with different heights are sequentially planted in different cement frame sets from bottom to top along the mountain slope according to successively increasing heights, the apple tree seedlings are distributed in a step shape, it is guaranteed that all the apple tree seedlings can enjoy sunlight within the maximum range, sunlight exposure is more sufficient, the sweetness of apples is improved, and the problem that the quality of apples is lowered because leaves on the lower sides of the apple trees cannot be exposed to sunlight and illumination is uneven when the apple trees are planted on flat land is avoided; moreover, when the apple trees are planted on the mountain slope, the stability of the mountain slope can also be improved.

The invention discloses an efficient and energy-saving reaction process for an alcohol ether solvent and a reaction system of the reaction process, and relates to the technical field of chemical production equipment. The reaction process comprises the following steps: (1) respectively feeding an alcohol ether solvent and ethyl acetate into a static mixer from a glycol ether or propylene glycol ether pump and an ethyl acetate feeding pump according to a ratio of (1:1)-(1:3), uniformly mixing, feeding into a reactive distillation column, and implementing a reaction, wherein the reaction pressure is 0.1-3MPa, and the reaction temperature is 90-110 DEG C; (2) pressurizing, removing excessive ethyl acetate and ethanol generated from the reaction from the top of the reactive distillation column, and recycling the ethyl acetate as first ester into an ethyl acetate esterification system; (3) feeding an alcohol ether ester solvent generated from the reaction and an unreacted alcohol ether solvent into a light component removal tower, and removing the unreacted alcohol ether solvent, thereby obtaining a finished product of the alcohol ether ester solvent from the bottom of the light component removal tower. The reaction process is high in conversion rate, low in cost and convenient in separation, and the utilization rate of ethyl acetate is increased.

The invention provides a method for planting orange trees on a mountain slope. The method comprises the following steps of (1) preparation before plantation, (2) plantation, including planting orange tree seedlings in different cement frameworks along the mountain slope from the bottom to the top according to an order of orderly increased height, and (3) fertilizer application, including placing a plurality of spherical gelatine sponge surrounding a root of each orange tree. The mountain slope is sunward with gradient from 37 to 45 degrees; the orange tree seedlings with various heights are orderly planted in different cement frameworks from the bottom to the top along the mountain slope according to the order of increased height; the orange tree seedlings can be distributed in a step shape and sunlight is ensured for orange tree seedlings to the largest extent; with adquate sunniness, orange sweetness can be increased; a problem of low quality of oranges due to uneven sunlight when orange trees are planted on the flat land and leaves of the lower side of the orange trees cannot be illuminated; and mountain slope stability can be enhanced with the orange trees planted on the mountain slope.

The invention discloses a method for efficiently utilizing high-aluminum gangue, and belongs to the technical field of resource utilization of industrial solid waste. The method comprises the following steps: curing after adding acid in gangue or cinder, and then acidifying, dissolving out, filtering and washing, thus obtaining a sulfate solution which mainly contains aluminum sulfate and silicon-enriched acid sludge in which impurities are removed, wherein the sulfate solution is used for preparing aluminum hydroxide or aluminum oxide and polyaluminum sulfate products, and white carbon blackcan be generated by roasting the acid sludge. The method disclosed by the invention is reasonable in the resource utilization, no new solid waste emission is generated, the market constant of the products is large, and a feasible method can be provided for resource utilization of the high-aluminum gangue.

The invention discloses a method for preventing wine tartar crystallization on the basis of an ultrasonic technology and relates to the technical field of wind making. The method comprises the following steps: ultrasonic treatment: conducting ultrasonic treatment on green wine under certain ultrasonic conditions; (2) adding a wine tartrate stabilizer: adding the emulsified wine tartrate stabilizer into the wine subjected to ultrasonic treatment, and mixing the wine tartrate stabilizer and the wine uniformly. The method provided by the invention can prevent tartar crystallization during storage of the wine, keeps the original taste, physical and chemical properties, fragrance and other quality indexes of the wine, and guarantees the interior quality of the wine. Meanwhile, the method simplifies the production technology of the wine, reduces the production cost of the wine, avoids resource waste and is conductive to increasing the economic benefits of wine production.

The invention relates to a method for improving the decomposition efficiency of rare earth minerals and sulfuric acid, belonging to the field of hydrometallurgy. Including mixing rare earth concentrate with concentrated sulfuric acid and iron powder for segmental roasting, adding a certain amount of water to the solidified minerals during the low-temperature roasting process, optimizing the solid-liquid-gas reaction system, and improving the diffusion of sulfuric acid in the reaction process Speed, reduce sulfuric acid consumption, increase rare earth decomposition rate. During the high-temperature roasting process, the high-efficiency decomposition of excess sulfuric acid and the formation of iron phosphate and thorium pyrophosphate mainly fix radioactivity and phosphorus resources into the slag. The two-stage roasting simplifies the components of the tail gas, which facilitates the subsequent tail gas treatment, reduces the cost of tail gas treatment, and reduces environmental pollution.

The invention provides a peach tree planting method on a hillside. The method comprises the following steps of (1) preparing before planting, (2) planting, including planting peach tree seedlings in various cement framework groups on a hillside from the bottom to the top according to a height gradual increase order, and (3) applying fertilizer, wherein in the fertilizer applying step, one month after plantation, a plurality spherical gelatin sponge are placed around a root of each peach tree seedling; a sunward hillside with the gradient of 37 to 45 degrees is selected; peach tree seedlings are planted in various cement framework groups on a hillside from the bottom to the top according to the height gradual increase order; the peach tree seedlings are distributed in a step shape to ensure the peach tree seedlings to enjoy the sunshine to the largest extent; with thorough sunniness, peach sweetness can be enhanced; a problem of peach quality decrease due to uneven sunniness acquired by peach trees planted on a flat land and lack of sunniness to lower sides of the peach trees can be solved; and hillside stability can be improved when the peach trees are planted on the hillside.

The invention discloses a green terpin hydrate production method. The green terpin hydrate production method comprise the step of adding sulfuric acid and turpentine to perform hydration reaction and is characterized in that the heterogeneous product (red oil) collected in other bathes and produced through side reaction in the sulfuric acid and turpentine hydration reaction is added into a reaction material obtained after hydration reaction for washing, the material is subjected to standing and precipitation to remove acid water after washing. The invention further discloses a green terpilenol production method. The green terpilenol production method comprises the step of generating the terpin hydrate through hydration reaction and is characterized in that the step of generating the terpin hydrate through hydration reaction is achieved by adopting the green terpin hydrate production method. According to the green terpin hydrate and terpilenol production methods, the red oil produced in side reaction is utilized to perform washing in a hydration process, a little amount of clear water is used for washing in a centrifugation process, all the collected acid water is reused without discharging, and green production of acid water products is achieved.