39results about How to "Cost compliance" patented technology

The invention provides an environment-friendly preparation method of a substituted oxazole compound. According to the method, N-substituted formyl-alpha-substituted glycine ester is used as an initialraw material, a cyclization reaction is performed under the action of a dehydrating agent (trisubstituted aryl phosphine dichloride, a combination of trisubstituted aryl phosphine dichloride and an acyl chloride reagent, or a combination of trisubstituted aryl phosphine oxide and an acyl chloride reagent) and organic amine to obtain the substituted oxazole compound, and the obtained substituted oxazole compound can be further saponified and de-carboxylated to obtain a medical intermediate 4-substituent-5-substituent oxy-oxazole. In the reaction process, the byproduct (trisubstituted aryl phosphine oxide) can be repeatedly used, the cost is reduced; dehydrating agents (phosphorus oxychloride and phosphorus pentoxide), which are high in price and generate a large amount of wastewater, are not used; a high-temperature cyclization reaction is not needed, the process is simple, operation is easy and convenient, no phosphorus-containing wastewater is discharged in the technological process,and the preparation method is environmentally friendly, low in cost, high in atom economy, high in target product yield and purity, and suitable for industrial application.

The invention discloses methyl p-tolyl sulfone and a preparation method. Methyl p-tolyl sulfone is prepared from components of raw and auxiliary materials in parts by weight as follows: 200 parts of water, 29 parts of sodium carbonate, 33 parts of anhydrous sodium sulfite, 45 parts of paratoluensulfonyl chloride, 1 part of activated carbon, 3 parts of sodium hydroxide and 16 parts of chloromethane. The preparation method comprises steps as follows: a) water is added to a salt formation kettle in proportion, stirring is started, sodium carbonate, anhydrous sodium sulfite and paratoluensulfonyl chloride are added once in proportion after heating, and the materials naturally react after a manhole is tightly closed; b) steam is introduced, heating and thermal insulation are performed, and a paratoluensulfonyl chloride solution is prepared; c) activated carbon is added in proportion during stirring, hot filtration is performed during stirring, and the mixture is subjected to direct replacement and then enters a methylation reaction kettle; d) steam is introduced, heating is performed, a chloromethane pipeline valve is opened for a methylation reaction; a methylation reduction reaction is performed again after thermal insulation; e) sodium hydroxide is sucked once for a neutralization reaction; f) the mixture is transferred into a centrifugal machine to be spin-dried and then transferred into an oven to be dried.

The invention relates to a cleaning method for objects before electroplating. The cleaning method comprises the processing steps of degumming; removal of water-soluble dirt, rinsing removal of oil-soluble dirt, removal of a modified hydrocarbon cleaner; vacuum steam cleaning; vacuum drying; inspection. According to the cleaning method, poisonous chemical products such as trichloro ethylene and potassium permanganate do not need to be used, so that the health of a worker is guaranteed, and greenness and environment friendliness are realized. The cleaning method also has the advantages that 1, rinsing can be realized without pure water, extra pure water production equipment does not need to be added, the production of sewage water is reduced, the sewage treatment cost is lowered, and the requirement for clean production is met; 2, after the object is cleaned, the worker does not need to wipe the object, an extra drying oven does not need to be added for drying, the working procedures are simple, the labor cost is saved, and the production efficiency and the economical benefits are improved; 3, water marks are not retained, the qualification rate of electroplated pieces is obviously increased, and the economical benefits are enhanced; 4, the cleaning effect on irregular objects at special parts, such as a blind hole, a node, a gap and a crack, is good.

The invention discloses a high temperature resistant nano emulsion and a low energy consumption preparation method thereof. Each 100 parts by weight of the high temperature resistant nano emulsion comprises 10-40 parts of oil phase, 2-30 parts of a nonionic surfactant, 0.01-5 parts of ionic surfactant and the balance of water. The preparation method comprises the following steps: mixing the oil phase with the nonionic surfactant so as to be an oil solution of the surfactant, heating and stirring; at the same time, heating water separately; adding the ionic surfactant into the oil solution of the surfactant, adding the ionic surfactant into the water, or standing by the ionic surfactant for later use; adding the water into the oil solution of the surfactant, emulsifying, subsequently stopping stirring and naturally cooling to be the room temperature so as to obtain the high temperature resistant nano emulsion. The method is simple to operate, not only can the electric quantity of positive nano emulsion be regulated and controlled on premise that the size of nano emulsion droplet is not affected, but also the electric quantity of negative nano emulsion can be regulated and controlled, and the nano emulsion has high temperature characteristics.

The invention relates to an automatic circulating breeding wastewater treatment device and a method thereof, and belongs to the technical field of environmental protection. The device comprises a solid-liquid separation system, a solid organic matter recycling system, a liquid treatment system and a recovery system. The method comprises the following steps: pushing a conveyer trough by using the gravity effect to convey breeding wastewater; breaking night soil in the breeding wastewater to realize solid-liquid separation, circularly flushing the night soil by sewage obtained after the solid-liquid separation, adsorbing the remaining wastewater through connecting an active carbon tube, and further treating the swage by using the biological treatment of a biological rotating disc; and fermenting the solid organic matters and the adsorbed and precipitated sludge by a biogas tank to produce biogas in order to the recycling of the solid organic matters. The device and the method realize respective recycling of the breeding wastewater after solid-liquid separation, and also can automatically collect the solid organic matters in the breeding wastewater and ferment the solid organic matters to produce the biogas, so the treatment cost of the breeding wastewater is effectively reduced.

The invention discloses a lignin-based super-hydrophobic coating and a preparation method thereof. The lignin-based super-hydrophobic coating is prepared from the following raw material components in parts by mass: 2 to 4 parts of covalently cross-linked lignin micro-nano spheres, 2 to 3 parts of trimethoxy (1H, 1H, 2H, 2H-13 fluorine n-octyl) silane, 1 to 2 parts of epoxy resin and 1 to 2 parts of curing agent. The preparation method comprises the following steps: preparing a covalent cross-linked lignin micro-nano sphere turbid liquid, preparing a lignin micro-nano sphere turbid liquid with low surface energy, preparing a super-hydrophobic adhesive prefabricated liquid, and coating a film. The lignin-based super-hydrophobic coating has the advantages of being low in cost, environmentally friendly, excellent in super-hydrophobic performance and the like, is a novel super-hydrophobic material and has good use value and application prospects, and the preparation method of the lignin-based super-hydrophobic coating has the advantages of being simple in process, mild in preparation condition, low in cost and the like, conforms to the green chemistry concept, is suitable for large-scale preparation, and is onvenient for industrial application.

The invention provides a magnesium oxide based desulfurizing agent and a preparation method thereof. The magnesium oxide based desulfurizing agent is prepared from caustic-burned magnesia powder, a pore forming agent, and water; wherein the active caustic-burned magnesia powder has a magnesia content of 75% or more and is prepared by sintering low-grade magnesite with a magnesium content of 43.0%or less in a suspension kiln. The low-grade magnesite with a low magnesia content is taken as the raw material and then sintered in a suspension kiln to prepare the active caustic-burned magnesia powder; then the caustic-burned magnesia powder is mixed with the pore forming agent and water to obtain the magnesium oxide based desulfurizing agent, which has a good desulfurizing effect; and solved are the problems that in the prior art, the cost of a magnesia desulfurizing agent is high, the pollutant discharge amount is large, and the desulfurizing efficiency of a conventional calcium based desulfurizing agent is low.

The invention relates to a synthesis method of paraben compounds marked by a stable isotope 13C or D. In the method, p-hydroxybenzoic acid, which is marked by the stable isotope 13C or D, and an alcohol compound are employed as raw materials for preparing the paraben compounds under the effect of an acidic catalyst p-toluenesulfonic acid. Compared with a synthesis process of the paraben compounds in natural abundance, the method is free of isotope dilution during the reaction process, has mild reaction conditions and high utilization rate on the isotopes. The paraben compounds marked by the stable isotope 13C or D, after separation and purification, are more than 99% in chemical purity and are more than 99 atom% in isotope abundance.

The invention relates to milk fat and a product for enhancing aroma through enzymolysis and a preparation method of the milk fat and the product, and particularly provides a composition, a milk fat zymolyte or a product of the milk fat zymolyte, which have strong milk aroma flavor and do not have peculiar smells such as bitter taste and oxidation taste, and the milk fat zymolyte and the product ofthe milk fat zymolyte are used as natural aroma additives to be applied to foods. The natural milk flavor is outstanding and mellow in characteristic flavor, and the purposes of enhancing the characteristic milk fat aroma of the product, replacing part of natural milk fat, reducing the product cost and the like are achieved.

The invention relates to the field of fermentation feed, in particular to a method for preparing a high-content lysine feed through fermentation of navel orange pomace. The method includes the following steps of firstly, using the navel orange pomace as the basic fermentation substrate, and adding some nutrients for bacteria growth and reproduction and a lysine production bacteria solution; secondly, weighing the navel orange pomace to be smashed, adding wheat bran and urea to be evenly mixed, sequentially adding the lysine production bacteria solution, a KH2PO4 solution and a MgSO4 solution to be evenly mixed, and conducting drying and smashing after fermenting. By using the navel orange pomace as the fermentation substrate, one or more bacteria for lysine production are inoculated, the high-content lysine fermentation feed can be produced after fermentation under the certain temperature, water content, inoculation amount, time and other conditions, the nutrients of the navel orange pomace are improved and added to the feed to replace part of or the whole of lysine, the feed cost is reduced, the feed conforms to the environmental protection requirement, waste is turned into wealth, the environmental pollution is reduced, and the additional value of byproducts obtained after navel oranges are processed is increased.

The invention discloses a method for recycling valuable metals from waste lithium ion batteries, and belongs to the technical field of waste battery recycling. The method comprises the following steps: (1) charging a waste lithium ion battery; (2) crushing the charged battery, and sorting the materials to obtain a mixture of a positive electrode material and a negative electrode material; (3) calcining the mixture of the positive electrode material and the negative electrode material at high temperature; (4) putting the calcined material into water, performing stirring, performing filtering, adding sodium carbonate into the filtrate to obtain lithium carbonate, and taking the filter residue as a metal simple substance and an oxide thereof. Part of lithium ions are transferred to the negative electrode material through charging, and then the lithium and other metals can be recycled through simple processes such as calcination and water leaching of the positive electrode and negative electrode mixture. The method is simple, effective and suitable for large-scale production.

The invention discloses an electrical connector. The electrical connector includes an insulation body and an electrical connector terminal group; the electrical connector terminal group include a first row of contacts and a second row of contacts; the first row of contacts sequentially comprises a first grounding contact, a first power source contact, a signal sending contact, a signal receiving contact, a first detecting contact, a second power source contact and a second grounding contact; the second row of contacts sequentially comprises a third grounding contact, a third power source contact, a second detecting contact, a fourth power source contact and a fourth grounding contact; the first grounding contact and the third grounding contact are opposite to each other in a vertical direction; the first power source contact and the third power source contact are opposite to each other in a vertical direction; the second grounding contact and the fourth grounding contact are opposite to each other in a vertical direction; the second power source contact and the fourth power source contact are opposite to each other in a vertical direction; the first detecting contact and the second detecting contact are distributed at two sides of the signal sending contact and the signal receiving contact in a left-and-right direction; the insulation body is provided with an accommodating cavity and terminal accommodating grooves; and the contacts are exposed in the accommodating cavity. Thus, the electrical connector has high compatibility and is low in cost.

The invention discloses a preparation method of a waste tire thermal cracking carbon black electrode material for a supercapacitor, waste tire thermal cracking carbon black is used as a raw material, and the electrode material obtained by composite activation not only retains the original graphitization degree of the material, but also increases part of defects. The electrode material has a certain pore structure, and the interface area between the electrode material and an electrolyte is increased, so that higher specific capacitance is obtained, and the standard of the electrode material for the supercapacitor is achieved. According to the invention, the preparation of the electrode material for the waste tire thermal cracking carbon black based super capacitor is successfully realized, the resource utilization of the waste tire is improved, the cost of the electrode material for the super capacitor is reduced, the national green development requirement is met, and the application prospect is good.

The invention discloses a water-soluble fertilizer synergistic composition as well as a preparation method and application thereof. The water-soluble fertilizer synergistic composition takes yeast fermentation broth as a carrier, and comprises 300-350 parts of the yeast fermentation broth, 80-100 parts of humic acid , 65-80 parts of monoammonium phosphate, 70-80 parts of potassium sulfate, 130-140parts of urea and 10-15 parts of trace elements. The water-soluble fertilizer synergistic composition has the effects of balancing nutrition, effectively avoiding antagonism among elements and facilitating absorption and transportation of nutrient elements; and meanwhile, the composition has the effects of improving plant resistance, conditioning soil and improving the utilization rate of nitrogen, phosphorus and potassium. The water-soluble fertilizer synergistic composition is simple in production process, convenient to use, beneficial for large-scale popularization and application and favorable for root system development, promotes root system absorption and transferring of nutrient elements needed by plants, and remarkably promotes plant growth and development.