34results about How to "No environmental hazard" patented technology

The invention discloses a method for realizing comprehensive recovery of valuable elements in an aluminum-based petroleum refining catalyst by utilizing reducing gas. The method comprises the following steps that spent catalyst is preatreated by adopting a reduction heat treatment process, and the three kinds of valuable metal elements in the spent catalyst generate an aluminum salt capable of being dissolved in water, metal elementary substance nickel cobalt with magnetism and acid solubility, and acid-resistant and alkali-resistant rare metal low-valence oxide, a simple substance or a carbide correspondingly, so that the property difference of the valuable elements compound to be recycled is expanded; the aluminum oxide is extracted by using an aqueous solution or an alkali solution, thenickel and cobalt are extracted through magnetic separation or acid solution leaching, and the rare metals are enriched and recycled in the leaching residues. The method has the advantages that the process is simple and reasonable, the used reducing agent is economic and environment-friendly, efficient separation and comprehensive recovery of the valuable elements in the spent catalyst can be realized at the same time, and the economic benefits are remarkable and the like.

The invention discloses a synthesizer of imidazolium ionic liquids. The synthesizer comprises a reactor, a collecting bottle, a magnetic stirring heating unit, an imidazole component raw material bottle and a volatile component raw material bottle, wherein the wall of a reactor is provided with a heat transfer interlayer; the reactor is internally provided with a sensor probe a of temperature measuring equipment, the magnetic stirring heating unit is arranged at the bottom of the collecting bottle, and the collecting bottle is internally provided with a sensor probe b of the temperature measuring equipment; the imidazole component raw material bottle is connected with the reactor and is provided with a liquid delivery pump a, and the outlet end of the imidazole component raw material bottle is provided with an atomization device a; and the volatile component raw material bottle is connected with the reactor and is provided with a liquid delivery pump b, and the outlet end of the light-volatile component raw material bottle is provided with an atomization device b. The synthesizer is used for preparing ion liquid used for extracting cellulose from lignocellulose biomass. The synthesizer is simple and easy to implement, the process for preparing an imidazole ion liquid is simple, the processing temperature is low, the condition is gentle, the substances in a system is utilized in a circulating manner, the raw material utilization ratio is improved, and the rapid and efficient synthesis of the ion liquid is realized.

The present invention provides a method for the manufacture of a lactate biosensing strip for use in the assay of lactate in a sample, said sensor comprising a dry strip sensor of an electrically conducting material having at least: i) an external surface. ii) a screen printed reference electrode and, iii) a screen-printed working electrode.

The invention discloses a method for the preparing pitcher plant-imitating super-lubricating surface through an electric-arc spraying technology. Through the electric-arc spraying technology, an aluminum coating is built on the surface of a base body, then low-surface-energy substance modification and lubricating oil covering are sequentially conducted, and then the pitcher plant-imitating super-lubricating surface is obtained. The preparation method of the pitcher plant-imitating super-lubricating surface does not have special requirements for the base body, simple in preparation technique, good in repeatability and suitable for large-area and industrialized application.

The invention discloses a method for recycling a valuable element from an aluminum-based petroleum refining waste catalyst. According to the method, carbon thermal reduction is adopted for pretreatingthe waste catalyst, three kinds of valuable metallic elements in the waste catalyst generate aluminum salt capable of being dissolved in water, metal element nickel and cobalt with magnetism and acidsolubility and metal carbide with acid resistance and alkali resistance, nature difference expansion of valuable element compounds achieves step-by-step extraction of the valuable elements, particularly, the water solution or alkali solution is used for extracting aluminium oxide, through magnetic selection or the acid solution, nickel and cobalt are extracted, and enrichment and recycling of rare metal carbide can be achieved. The method has the advantages that the process is simple and reasonable, the carbon reduction raw material is economic and environment-friendly, meanwhile, efficient separation and comprehensive recycling of valuable elements in the waste catalyst can be achieved, and the economic benefit is obvious.

The invention discloses a flame-retarding smoke inhibitor and a preparation method thereof. The preparation method of the flame-retarding smoke inhibitor includes a step of heating and containing alkylphosphinate, tributyltin and trioctylphosphine oxide shown in formula (I) at 200-300DEG C, wherein in formula (I), R1 is C1-C6 alkyl group or phenyl group; R2 is C1-C6 alkyl group or phenyl group; Mis metal element, n is integer from 1 to 4. The flame-retarding smoke inhibitor can improve its flame retarding performance in application material on the basis of keeping low smoke density of phosphinate, no environmental harm and other advantages; the smoke inhibitor cannot generate fragile matters and reduce the influence on the mechanical performance of a principal material base body; the rawmaterials of the flame-retarding smoke inhibitor is low in price and easy to obtain, so that the flame-retarding smoke inhibitor has high popularization and application value.

The invention relates to a method for preventing marine microbial corrosion by using an artificial super-smooth surface. Specifically, a method comprising three steps of anodic oxidation, surface modification and lubricating oil injection is adopted to prepare an artificial super-smooth surface on an aluminum surface. As a liquid-phase surface can be regarded as a non-defective surface on micro level or even molecular level, the obtained surface is a liquid-phase super-smooth surface; the adhesive force of microbes on the artificial super-smooth surface can be greatly reduced so as to prevent adhesion of the microbes, and thus the artificial super-smooth surface has a very good effect in preventing corrosion caused by adhesion of the marine microbes. The preparation method is simple and easy in operation; the preparation cost is low; no expensive equipment is needed; the used reagents generate no environmental hazards.