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36results about How to "Guaranteed acidity" patented technology

Method for removing manganous dithionate in pyrolusite slurry leaching solution to prepare saturated manganese sulfate slurry and manganese sulfate

ActiveCN107445209AProcess flow is easy to operateHigh resource utilizationManganese sulfatesHeavy metalsDithionate
The invention provides a method for removing manganous dithionate in a pyrolusite slurry leaching solution to prepare saturated manganese sulfate slurry and manganese sulfate. The method comprises the following steps: performing solid-liquid separation to obtain pyrolusite slag and a separated solution containing manganese sulfate and manganous dithionate; performing neutral oxidation on the separated solution to remove iron and aluminum; vulcanizing to remove heavy metal; heating an obtained mixed solution of manganese sulfate and manganous dithionate to evaporate and concentrate to obtain a crystal-containing saturated solution; adding sulfuric acid or a saturated manganese sulfate solution containing sulfuric acid to decompose manganous dithionate into manganese sulfate and sulfur dioxide; discharging mixed gas of sulfur dioxide and water vapor to obtain the saturated manganese sulfate slurry without the manganous dithionate. The invention also provides a method for preparing manganese sulfate through the saturated manganese sulfate slurry prepared by the method. The method is low in cost, easy to operate, and capable of removing manganous dithionate in the leaching solution without additional subsequent purifying process, and high-level manganese sulfate product is prepared.
Owner:SICHUAN UNIV

High self-cleaning inorganic heat insulation composite system

The invention relates to a high self-cleaning inorganic heat insulation composite system comprising a substrate wall body, as well as interface mortar, a heat insulation layer, an anti-cracking protection layer and a veneer layer in sequence from the substrate wall body to the outside. The invention has the advantages of simple structure, comprehensive functions, favorable heat insulation effect, strong anti-cracking and shock resistance, obvious fireproof and antiflaming effect, favorable high temperature stability, high self-cleaning and the like. Anti-cracking mortar is selected for the anti-cracking protection layer and alkaline-resistant fiberglass gridding cloth or an AJ hot zinc-plating electrowelding net is arranged in the mortar, therefore, the anti-cracking and shock resistant effects are better; the polystyrene particles of the heat insulation layer are made from recycled polystyrene plates, therefore, the processing is simple, a large number of white pollution can be solved, and the heat insulation property of the material can be greatly improved due to excellent heat insulation property of the polystyrene particles per se; and an energy-saving coating material has the advantages of favorable visible light and near infrared light reflectivity, higher thermal infrared emissivity, excellent high temperature stability, high intensity, high temperature resistance, wear resistance, high tenacity, convenience for construction and cost saving.
Owner:青岛格尔美环保涂料有限公司

Fast fermentation method of green leaf mustard

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.
Owner:四川省味聚特食品有限公司

Method for preparing spherical amorphous silicon aluminum carrier

ActiveCN103861659ASuitable specific surfaceAppropriate pore volumeCatalyst carriersIonAluminum composites
The invention relates to a method for preparing a spherical amorphous silicon aluminum carrier. The method is characterized by comprising the following steps: firstly, preparing a filter cake containing an amorphous silicon aluminum composite oxide by using a neutralization method; secondly, adding a sodium alginate water solution to obtain an amorphous silicon aluminum composite oxide-sodium alginate suspension, dropwise adding the silicon aluminum composite oxide-sodium alginate suspension into a water solution containing divalent or trivalent metal ions with certain concentration, and gelling to form small amorphous silicon aluminum composite oxide-alginate composite balls; finally, washing, drying and roasting the small amorphous silicon aluminum composite oxide-alginate composite balls to obtain the spherical amorphous silicon aluminum carrier. According to the method, the spherical amorphous silicon aluminum carrier is prepared by directly molding the amorphous silicon aluminum composite oxide filter cake in a mild water phase, and only drying and roasting the filter cake once; the spherical amorphous silicon aluminum carrier is low in energy consumption, pollution-free and simple in preparation process, convenient to operate and easy to realize industrial production.
Owner:CNOOC TIANJIN CHEM RES & DESIGN INST +1

Green terpin hydrate and terpilenol production methods

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.
Owner:FUJIAN SENFA BIOTECH

A kind of method utilizing wet process phosphoric acid to prepare ferrous phosphate

ActiveCN112794299BReduce generationPrevent compromising purityPhosphorus compoundsO-Phosphoric AcidPhosphate
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.
Owner:WUHAN INSTITUTE OF TECHNOLOGY +1

A kind of fast fermentation method of green mustard

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.
Owner:四川省味聚特食品有限公司

How to Plant Apple Trees on a Hillside

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.
Owner:吴堡县丰润现代农业开发有限公司

Efficient and energy-saving reaction process for alcohol ether solvent and reaction system of reaction process

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.
Owner:谦信化工集团有限公司 +1

A high-efficiency and energy-saving reaction process and reaction system for alcohol ether ester solvents

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.
Owner:谦信化工集团有限公司 +1

Greek yogurt and preparation method thereof

The present invention provides Greek yogurt and a preparation method thereof, and belongs to the technical field of food engineering, and the preparation method comprises the following steps: step 1, raw material milk is subjected to pretreatment to obtain degreased raw material milk; s2, carrying out homogenization treatment on the material obtained in the step S1; s3, blending the single cream obtained in the step S2; then sterilizing again; then cooling; s4, sterilizing and cooling other materials obtained in S2, inoculating strains, uniformly stirring, and then standing for fermentation; s5, stopping fermentation, demulsifying and stirring to dilute the emulsion; s6, passivating treatment is conducted for 60-200 s under the condition of 50-65 DEG C, and the acid production activity of the strains is inhibited; s7, carrying out centrifugal whey removal treatment on the product prepared in the step S6, and then introducing the product into a temporary storage tank; and S8, uniformly stirring the product obtained in the step S7 and the product prepared in the step 3, and filling. According to the preparation method of the Greek yoghurt provided by the invention, the taste of the final product is ensured through the combination of a single cream melting process and a passivation process.
Owner:北京乐纯悠品食品科技有限公司

Production method of hydrated terpene glycol and terpineol

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.
Owner:FUJIAN SENFA BIOTECH
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