40results about How to "Increase chlorine content" patented technology

The invention discloses a method for treating hazardous wastes through the cooperation of a metallurgical furnace. The method comprises the steps of sintering for agglomerating the hazardous wastes containing heavy metal, or condensing for agglomeratingthe hazardous wastes containing the heavy metal, and smelting the combustible hazardous wastes to form a finished product block so as to obtain analloy crude product containing the heavy metal. According to the method for treating the hazardous wastes through the cooperation of the metallurgical furnace provided by the invention, the hazardouswastes containing the heavy metal are treated through a melting furnace, valuable metal in the hazardous wastes containing the heavy metal is recycled, meanwhile, organic matters inthe combustible hazardous wastes are decomposed by high temperature of the melting furnace, and heat values in the organic matters are utilized, so that inthe smelting process of the hazardous wastes containing the heavy metal, the harmful element of the combustible hazardous wastes, and fly ash used as a first slag former or furnace slags produced by residue incineration is reduced to be below 0.1 percent, the wastes can be directly used as building materials and used for preparing rock wool and the like, and the metal recovery rate reaches to more than 90 percent.

A fluid purification system capable of removing lead from significant volumes of fluids also containing at least one of TOC and TTHM under low pressure conditions and at reasonable flow rates is provided. The system comprises a first fluid purification media comprising a rigid porous purification block. The rigid purification block includes a longitudinal first surface; a longitudinal second surface disposed inside the longitudinal first surface; and a porous high density polymer disposed between the longitudinal first surface and the longitudinal second surface. The system further includes a second fluid purification media, comprising a fibrous, nonwoven fabric disposed adjacent to the first surface of the first fluid purification media, the second surface of the first purification media, or both.

The invention discloses a trichloroisocyanuric acid effervescent tablet and a preparation method thereof. The trichloroisocyanuric acid effervescent tablet comprises raw materials of, by weight, 46-50% of trichloroisocyanuric acid, 18-23% of cyanuric acid, 14-17% of cyanuric acid, 2-5% of boric acid, 5-8% of sodium benzoate, 1-2% of polyvinylpyrrolidone, 0.2% of sodium dodecyl sulfate, 1.5% of anhydrous citric acid and 0.3% of carboxymethylcellulose sodium. The preparation method comprises steps of: (1) raw material screening: sieving trichloroisocyanuric acid, sodium carbonate, cyanuric acid and boric acid, separating adhesive particles and removing large particles or hard block; (2) mixing well the raw materials; (3) crushing the materials; (4) placing sodium benzoate into a mixture to obtain a standby material; (5) granulating the standby material to obtain a granular standby material; (6) adding polyvinylpyrrolidone, sodium dodecyl sulfate, anhydrous citric acid and carboxymethylcellulose sodium into the standby material and mixing well for reservation; (7) compacting the materials to obtain the trichloroisocyanuric acid effervescent tablets.

The invention relates to a preparation method of poly-alpha-olefin base oil. The method comprises the following steps: S1, catalyzing an oligomerization reaction of an alpha-olefin mixture for 3-8 hours by using a Cr-AlCl3/Al2O3 immobilized catalyst at a temperature of 50-120 DEG C under a pressure of 0.1-1.0 MPa and an alpha-olefin/solvent volume ratio of (1:0)-(1:1); and S2, after the reaction is stopped, filtering the catalyst, washing with distilled water, carrying out atmospheric distillation to remove the solvent, carrying out reduced pressure distillation to remove the unreacted alpha-olefin and part of the alpha-olefin dimer, and carrying out hydrogenation to obtain the poly-alpha-olefin base oil. The invention also relates to the poly-alpha-olefin base oil prepared by the method.The PAO base oil prepared by the method does not need to be mixed with low-viscosity PAO oil for PAO with a kinematic viscosity range of 30-40 mm<2>/s at 100 DEG C, so that the volatility of lubricating oil can be greatly reduced.

The present invention relates to the design and synthesis method of adsorbing resin, and by means of special polymerization method, small crosslinked polystyrene ball is made to possess proper geometric features and maximized function. By means of proper design, the synthesis steps are reduced, and functional radical contains special reactive functional groups capable of adsorbing noble metal. One functional molecule contains four adsorbing groups. The obtained adsorbent has excellent noble metal adsorbing performance and selectivity under different pH conditions, and may be used in the adsorption and recovery of noble metal in different fields.

The invention discloses a special mixing rubber for an insulating low-temperature-resistant wire core, wherein the components comprise 34-38% of chlorinated polyethylene, 8-12% of ethylene propylene diene monomer, 6-8% of white carbon black, 19-23% of an insulating reinforcing filler, 6-9% of a plasticizer, 5-8% of other matching agents, 15-18% of a flame retardant agent, and 1.8-2.2% of a vulcanization accelerator. According to the present invention, the special mixing rubber has advantages of good low-temperature resistance, no embrittlement in a low temperature environment, good flame retardancy and high insulation resistance, and retains other good comprehensive performances.

The invention relates to a preparation method of cresyl diphenyl phosphate. The method includes the steps of: 1) esterification reaction: mixing phosphorus oxychloride with a catalyst, then adding phenol dropwise, and at the end of the reaction, conducting reduced pressure distillation to obtain diphenoxy phosphoryl chloride; 2) reduced pressure reaction: reacting the intermediate diphenoxy phosphoryl chloride obtain in step 1) with m, p-cresol under a reduced pressure, and removing the reacted hydrogen chloride gas to obtain a cresyl diphenyl phosphate crude product; and 3) refining: carryingout alkali washing, washing and reduced pressure distillation on the cresyl diphenyl phosphate crude product obtained in step 2) to obtain cresyl diphenyl phosphate. Phosphorus oxychloride and phenolare employed for reaction to prepare the diphenoxy phosphoryl chloride intermediate, the generated intermediate reacts with m, p-cresol to prepare the product, the synthetic route reduces the impurities phenyl xylylphosphate, tricresyl phosphate and triphenyl phosphate, thus improving the purity.

The invention relates to a preparation method of polypropylene for preparation of chlorinated polypropylene with a high chlorination rate, which comprises the following steps: adding 3-20mmol of aluminium alkyl hexane solution into 1000ml of straight-chain saturated paraffin or straight-chain saturated paraffin mixture; adding 0.1-0.5g of catalyst per ml of straight-chain saturated paraffin or mixture with straight-chain saturated paraffin; and adding 10-150mul of orthosilicate component per g of catalyst, adding 10-150mul of dicarboximide compound per g of catalyst and filling gas mixture of propylene and hydrogen. The catalyst is a Ziegler-Natta catalyst; the straight-chain saturated paraffin is hexane or octane; the straight-chain saturated paraffin mixture is mixture of nonane and decane; and the dicarboximide compound is 2, 2, 6, 6-4-methylpyridine. As to the polypropylene, the melt flow index is 20-50g/10min, the isotacticity is 91-95 percent, the crystallinity is 40-54 percent and the bulk density is higher than 0.38g/cm3.

Chlorinated polystyrene and a preparing method thereof are provided. The chlorinated polystyrene and the method are characterized in that the method includes steps of (1) suspending and dispersing polystyrene powder into a water medium under stirring, and adding an emulsifier, a dispersant and an initiator, and (2) raising the temperature to 60-80 DEG C, feeding chlorine, reacting the materials, gradually controlling and raising the temperature to be 100-110 DEG C and reacting continuously, with the reaction time being 1-4 h; the temperature rising rate in the step (2) is 15-20 DEG C/h; a water-phase suspension process is adopted to perform chlorination on the polystyrene so that flame retardance and heat resistance can be improved; and addition of a flame retardant reducing mechanical properties of the polystyrene is avoided.