5 results about "Kerosene" patented technology

The invention discloses a method for removing phenol in phenol contained wastewater by using a hollow fiber membrane. The method comprises the following steps of: mixing a carrier and a diluent to prepare an extractant, wherein the adopted extractant carrier is tributyl phosphate, and the adopted diluent is coal oil or benzene; stirring and fully mixing the extractant and a stripping agent to prepare treating fluid; removing the phenol out of the phenol contained wastewater by using a hollow fiber membrane device; and after pretreating the hollow fiber membrane device, injecting the treating fluid into a tube pass of a membrane component, and injecting the phenol contained wastewater into a shell pass of the hollow fiber membrane component, wherein the wastewater can be treated through the same membrane component or a plurality of serial membrane components in a circular manner for many times; after the wastewater is subjected to two-stage treatment, the phenol concentration is less than 100mg/L; and after the wastewater is subjected to five-stage treatment, the phenol concentration is less than 5mg/L, the removal rate reaches up to 99.8 percent, and the wastewater reaches the national emission standard.

The invention aims to propose a metal recycling process for waste plastic electroplating parts, wherein the metal recycling process is clean and environmentally friendly, high in metal recycling rate,and capable of reducing damages to a plastic substrate. The metal recycling process comprises the following steps: step A, leaching the waste plastic electroplating parts in leaching equipment, usingdilute sulfuric acid or sulfamic acid as a leaching agent to obtain chemical leachate; step B, filtering the chemical leachate to obtain nickel-copper mixed liquid, extracting the nickel-copper mixedliquid, wherein the nickel-copper mixed liquid is used as a water phase, diphosphate is used as an extracting agent, and sulfonated kerosene is used as a diluent during extraction; and step C, usingsulfuric acid as a back extractant for back extraction of an organic phase obtained after extraction, separating to obtain a copper-containing solution and a nickel-containing solution, and separatelyelectrolyzing the copper-containing solution and the nickel-containing solution into electrolytic copper and electrolytic nickel.

The invention relates to an extraction method and an extraction agent for a denitration procedure in an H acid production process, and belongs to the technical field of the organic chemical industry.The extraction method comprises the following steps: firstly, preparing the extraction agent which comprises a solvent, a diluting agent and a co-solvent, wherein the co-solvent is 2-ethylhexylphosphoric acid mono-2-ethylhexyl ester, the solvent is a tertiary amine type solvent, and the diluting agent is one or more of sulfonated kerosene, benzene and toluene; then, extracting denitration substances by adopting the extraction agent, and forming a complexation layer and an inorganic acid aqueous layer after extracting; and applying the inorganic acid aqueous layer to an H acid segregation procedure, performing back extraction on the complexation layer, adding a back extraction agent until the pH of an organic aqueous phase formed by back extraction is 7-9, forming trisodium salt from the denitration substances, standing the trisodium salt to be layered to obtain an organic layer, and applying a solvent layer. The extraction agent does not react with the denitration substances, so that the complexation effect is good, the layering is easy, and the loss of the extraction agent is greatly reduced; and by applying the extraction method and the extraction agent to H acid production, generation of a large amount of wastewater is avoided, a large amount of ammonia is saved, and thus the production cost is lowered.

The invention discloses a full-tooth continuous quenching method of a slewing bearing, which comprises the following steps: (1) selecting equipment and raw materials: preparing an electric furnace, a filter press, a dissolving tank, a single-effect evaporator, a filter screen, an extraction tank and a steam boiler, and preparing rare earth fluorescent powder waste, caustic soda flakes, hydrochloric acid, a P507 extraction agent, water, caustic soda liquid and kerosene; and placing the mixed mixture in an electric furnace for calcining. According to the full-tooth continuous quenching method for the slewing bearing, the caustic soda flakes are utilized and subjected to low-temperature roasting in the electric furnace, so that the caustic soda flakes react with the caustic soda flakes, rare earth elements in the rare earth fluorescent powder waste are converted, and therefore the subsequent reaction is not direct reaction of the rare earth elements and acid, but neutralization reaction of the converted alkaline substances and the acid is achieved; the reaction can be quicker, so that the reaction efficiency is greatly improved.

The invention discloses a method for baking the automobile paint surface penetrant at high temperature. The method is characterized in that the automobile paint surface penetrant comprises the following raw materials by weight: 4-12 parts of Patentin, 2-6 parts of Car Port, 3-8 parts of deodorized odorless kerosene and 1-4 parts of high-temperature penetrant; the method comprises the following steps of A, putting the raw materials into a stirring tank in proportion at the room temperature to perform even mixing to obtain the paint surface penetrant which is bottled for later use; B, cleaning the automobile paint surface through cleanser, and wiping the automobile paint surface dry through a towel to make the automobile paint surface smooth; C, coating the paint surface penetrant on the whole automobile paint surface subjected to cleaning through a small sponge block; D, holding a gas spray gun with stable flame, and heating the paint surface by moving the gas spray gun back and forth and enabling the distance between the flame and the automobile paint surface to be 5cm-10cm until the paint surface penetrant is dried to be in shapes of white pieces; E, wiping away residual white piece-shaped dust on the automobile paint surface through a semi-wet cold towel and wiping the paint surface through a clean dry towel until the paint surface is bright and smooth. The method is mainly used for baking the automobile paint surface penetrant at the high temperature.