100results about How to "Reduce material consumption and energy consumption" patented technology

The invention discloses a device and technique for producing cyclohexane by benzene hydrogenation. The device for producing cyclohexane by benzene hydrogenation comprises a reactor, a superfine bubble generator and a bubble breaker, wherein the reactor is provided with a first containing cavity; the wall of the first containing cavity is provided with a feed port, a circulation discharge port, a circulation return port and a gas phase outlet; the superfine bubble generator is provided with a second containing cavity; the wall of the second containing cavity is provided with a return port and a gas phase outlet; the return port of the superfine bubble generator communicates with the circulation return port of the reactor; the bubble breaker is arranged in the second containing cavity; the bubble breaker is provided with a gas phase inlet and a liquid phase inlet which communicates with the circulation discharge port of the reactor; and the gas phase inlet of the bubble breaker communicates with the gas phase outlet of the reactor. The device disclosed by the embodiment of the invention has the advantages of high mass transfer efficiency, high reaction rate, short reaction time, low material consumption and energy consumption, simple structure, low manufacturing cost and low maintenance cost.

The invention relates to an A/O denitrification sewage treatment process and a device capable of realizing sludge reduction. The process comprises the following steps: leading sewage in an anoxic zone to realize denitrification and then leading the treated sewage in an aeration zone to carry out aeration treatment; pumping part aerated sewage to the upper part of the anoxic zone to realize refluxing of mixed solution; leading residual sewage in a deposition zone to realize sludge-water separation through natural deposition; and pumping part deposited sludge to a sludge detention tank according to sludge refluxing ratio and then pumping the part deposited sludge to the upper part of the anoxic zone after 5.0 to 8.0 hours of detention to realize sludge refluxing. The A/O denitrification sewage treatment process and the device have the advantages that the process effectively combines sewage denitrification treatment and sludge reduction and has the advantages of both A/O denitrification process and OSA process, thereby realizing sludge reduction while ensuring effluent water quality; meanwhile, the process has simple flow and reduces material consumption and energy consumption; moreover, the process saves investment and does not cause potential problems in environmental safety; and the device has low investment and operation cost and convenient operation management.

The invention discloses a method for extracting vanadium from a vanadium-containing raw material. The method comprises the following steps: a, uniformly mixing the vanadium-containing raw material, sulfuric acid and/or a sulfate, and water, so as to obtain a mixed material; b, performing aerobic roasting on the mixed material, so as to obtain a roasted clinker; c, performing leaching on the roasted clinker by using a leaching agent, so as to obtain a leaching slurry; and d, performing filtration separation on the leaching slurry, so as to obtain tails and a vanadium-containing solution. The method has relatively strong adaptability on composition variation of the vanadium-containing raw material, and helps to realize economic feasible industrial production and extraction of vanadium by using steel slag, vanadium slag and other vanadium-containing raw materials with relatively high calcium and magnesium content. The method is simple, practicable, low in equipment requirement, convenient to operate, low in material consumption and energy consumption, and easy for industrialization, and has extremely good economic benefit and social benefit.

The invention relates to a tail gas refining method, and in particular relates to a method for preparing refined hydrogen through deamination in tail gas generated by preparation of cyclohexylamine and dicyclohexylamine through aniline hydrogenation, belonging to the technical field of chemical engineering. The method comprises the following steps: allowing tail gas discharged by a cyclohexylamine device and a dicyclohexylamine device to enter an ammonia absorption tower by virtue of a Roche hydrogen compressor and a degreaser, wherein most of ammonia is absorbed by water to be converted into ammonia water to be output from the tower bottom in the tower, and the gas output from the tower top is water-containing hydrogen; allowing the water-containing hydrogen to pass through a water segregator, a fiber filter and a water adsorption tower so as to further remove water vapor, thereby obtaining the refined hydrogen. The concentration of the refined hydrogen can be 98.0-99.8 percent, the material and energy consumption is reduced, and the aims of energy conservation and emission reduction are achieved. The refined hydrogen can serve as recycling gas to be used for an aniline hydrogenation reaction, and gas phase zero emission is realized.

The invention relates to an ether production technology and especially relates to a method and production device for preparing methyl tertiary-butyl ether (MTBE) by a reaction of tertiary butanol and methanol. The method comprises that tertiary butanol and methanol are mixed and undergo a reaction to produce mixed gas, the mixed gas is fed into an extraction tower and is extracted, isobutene and MTBE are distilled off from the tower top, tertiary butanol, methanol, a trace amount of MTBE, water and an extractant flow out of the tower bottom, methanol is supplied for a tower top component of the extraction tower, the mixture is fed into a catalytic distillation tower, a methanol- and isobutene-containing tower top product of the catalytic distillation tower is fed back to a reactor and then undergoes a reaction, the MTBE is discharged from the bottom of the catalytic distillation tower, the materials discharged from the bottom of the catalytic distillation tower enters into a first extractant recovery tower, tertiary butanol, methanol and a trace amount of MTBE are distilled off from the top of the first extractant recovery tower, then are fed back to the reactor and then undergo a reaction, and the extractant and water flow out of the tower bottom, then enter into a second extractant recovery tower and then is recovered for recycle by reduced pressure distillation. The method and device solve the problem of azeotropy of tertiary butanol and water and improve a tertiary butanol one-step conversion rate to 87-94%.

The invention relates to a method for separating methyl acetate and a methanol water solution through multistage cross flow liquid-liquid extraction, which comprises the following steps of: carrying out multistage cross flow liquid-liquid extraction on methyl acetate and the methanol water solution as raw materials by using a mixed solvent of polyalcohol and water as an extracting agent; rectifying the extract residue phase to obtain the product of methyl acetate; and recycling the extract phase subjected to rectification. The separation method of multistage cross flow liquid-liquid extraction can be used for effectively separating the mixture of methyl acetate and the methanol water solution, the purity of methyl acetate reaches more than 99.7% for one-time extraction, and the yield reaches more than 97%. The product of methyl acetate has high purity and low material consumption and energy consumption, and the entire process has low cost and can not produce environmental pollution.

The invention discloses a novel method for comprehensively recycling cobalt, nickel, manganese and lithium elements from ternary battery waste and relates to a recycling method of the battery waste. The method comprises steps of disassembling a waste ternary battery to obtain waste ternary battery powder, carrying out acid leaching, copper removal, iron and aluminum removal and the like to obtainimpurity removal solution, regulating a pH value of the impurity removal solution with sodium hydroxide, precipitating mixture of cobalt hydroxide and nickel hydroxide, vulcanizing and precipitating residual cobalt and nickel ions with sodium sulfide, separating manganese ions from cobalt and nickel ions, and directly precipitating manganese hydroxide to prevent manganese ions from entering the extraction process, dissolving the cobalt hydroxide and nickel hydroxide mixture with sulfuric acid, extracting to remove impurities, separating cobalt and nickel to obtain pure nickel sulfate solution,precipitating with sodium hydroxide, and reversely washing for three times to obtain a battery-grade nickel hydroxide product. The method is advantaged in that a problem of high recovery cost causedby the fact that the cobalt, nickel and manganese elements must be subjected to extraction and back extraction in the prior art is solved, by innovating a process route, most of manganese ions are separated and removed before extraction, nickel ions are not subjected to the full-extraction and full-reverse extraction process, and nickel hydroxide is directly precipitated only after the related impurities are removed by extraction. The method has advantages of simple process, reduction of material consumption and energy consumption and remarkable reduction of production cost.

The invention relates to an efficient municipal sewage denitrification technology taking nitrosation-anaerobic ammonia oxidation as a core. The technology comprises the following steps: S1, carrying out pre-treatment on sewage by adopting a biochemical flocculation technology unit to remove almost organic matters, SS (Suspended Substance) and TP (Total Phosphorus) in the sewage, reducing a carbon-nitrogen ratio, controlling the OHO total amount in a system and realizing separation of the sewage and sludge; S2, carrying out sterilization treatment on the sewage which is discharged through the pre-treatment through an ozone disinfection technology unit; synchronously treating the sludge which is discharged through the pre-treatment through a sludge anaerobic digestion unit; S3, treating sewage subjected to the sterilization treatment through a nitrosation technology unit, and converting part of ammonia nitrogen in the sewage into nitrite nitrogen; S4, carrying out tail-end denitrification treatment on wastewater, which is treated through the nitrosation technology unit, through an anaerobic ammonia oxidation technology unit so as to enable TN (Total Nitrogen) of output water can stably reach first-grade A standards. The efficient municipal sewage denitrification technology provided by the invention has the advantages of good water quality of the output water, easiness for controlling operation, stability and high efficiency.

The invention provides a preparation method of silane modified polyether. The preparation method comprises the following steps: adding a thermometal complexing catalyst and initiators with different functionality degrees into a reaction kettle, adjusting the temperature ranging from 90 DEG C to 140 DEG C in the reaction kettle, and introducing epoxypropane or ethylene oxide to initialize a reaction so as to obtain a first mixture; introducing epoxypropane or ethylene oxide till the reaction is completed, performing aging treatment on the first mixture for 0.5-2 hours, performing vacuum degassing for 1-2 hours, and performing cooling to 40-60 DEG C so as to obtain high polymer polyether of a special structure; adding a catalyst for silane termination, a stabilizer for silane termination andisocyanate group alkoxy silane into the polymer polyether of the special structure so as to obtain a second mixture, performing a reaction on the second mixture at 40-80 DEG C for 2-10 hours, collecting a sample of the second mixture in the reaction period, performing infrared characteristic peak testing on the sample, and terminating the reaction when detecting that there is no infrared characteristic peak, so as to obtain the silane modified polyether. The invention further provides the silane modified polyether and application thereof.

The invention discloses an acrylate based hydroxyalkyl acid ester reactive diluent and a preparation method and an application thereof. The preparation method of the acrylate based hydroxyalkyl acid ester reactive diluent comprises an esterification reaction and an alkoxylation reaction. The preparation method specifically comprises the following steps: carrying out the esterification reaction onanhydride and a raw material containing hydroxyl acrylate; and then carrying out the alkoxylation reaction with ethylene oxide and propylene oxide to prepare a target product. The acrylate based hydroxyalkyl acid ester reactive diluent provided by the invention is a novel green compound, is used as a novel UV curing coating reactive diluent, is free of halogen, non-toxic and non-irritant, high incuring speed, high in practicality and superior to a common acrylate monomer in aspects, and is stable in preparation process, mild in reaction condition, simple to operate, free of post treatment steps, free of three waste discharge and green and environment-friendly.

The invention relates to the technical field of recovery of platinum group metals (PGMs), and provides a method for recovering platinum group metals from a metal carrier waste automobile exhaust catalyst. The method comprises the following steps: crushing and shearing the metal carrier waste automobile exhaust catalyst into sheets; then carrying out alkali fusion or alkali dissolution on the sheet-shaped waste catalyst to selectively dissolve an Al2O3 coating; achieving efficient separation of a metal carrier, PGMs and the Al2O3 coating; washing the sheet-shaped metal carrier for sale; and separating and purifying PGMs enrichment to obtain Pt, Pd and Rh products with the purity being 99.99% or above. The method realizes efficient recovery of PGMs without dissolving a carrier, has the characteristics of low material and energy consumption, high recovery rate of PGMs, low cost and the like, and is suitable for industrial production.

The invention mainly belongs to the field of secondary precious metal, and relates to a method for environment-friendly recovery of palladium from palladium-containing waste. The method comprises thesteps that the palladium-containing waste is subjected to pre-treatment such as ball grinding, calcination, reduction and distillation, palladium is oxidized in an acid system with Fe3+ as an oxidizing agent, and combined with chloride ions to enter a liquid phase, leachate selectively adsorbs [PdCl4]2 through anion exchange resin, elemental palladium is obtained in desorption and reduction modes,and Fe2+ is oxidized into Fe3+ for recycling. According to the method, the environment-friendly pollution-free Fe3+ oxidizing agent is adopted, palladium is adsorbed through the anion resin, tail liquid is recycled, and the method has the advantages of economical efficiency, environment friendliness, energy saving, emission reduction and the like and is suitable for industrial application.