189results about How to "Simple regeneration method" patented technology

The invention discloses a regeneration method of a lithium extraction system. The lithium extraction system is regenerated by virtue of alkaline saponification and the regeneration method comprises the following steps of mixing empty-loading organic phases subjected to lithium extraction and reverse extraction and alkaline liquor, saponifying and standing for separating phases to obtain a clarified and transparent regenerated and extracted organic phase, wherein the empty-loading organic phases comprise an extractant, a synergistic extractant and a diluent which are involved in the lithium extraction and reverse extraction processes; the synergistic extractant is iron chloride; and the alkaline liquor is any one of sodium hydroxide solution and potassium hydroxide solution. The regeneration method of the lithium extraction system disclosed by the invention has the advantages of simplicity in operation and good saponifying effect; when lithium is extracted by virtue of the saponified, regenerated and recycled extraction organic phase, the extraction efficiency of lithium is high and the extraction effect is good; and by the method, the recycling of the extraction organic phase for extracting lithium is achieved and the process flows of extracting, carrying out reverse extraction, regenerating and extracting for circularly extracting lithium are completed.

The invention relates to a method for regenerating a titanium-based vanadium-series SCR (Selective Catalytic Reduction) denitration catalyst. The method comprises the following steps: removing dusts from the surface of the waste titanium-based vanadium-series SCR denitration catalyst through high-pressure purging and ultrasonic wave treatment; carrying out acid treatment on the dust removed catalyst and washing the catalyst subjected to acid treatment with clean water; carrying out alkali treatment on the washed catalyst and washing the catalyst subjected to alkali treatment with clean water; adding the catalyst subjected to alkali treatment into a regeneration solution, soaking in a standing manner at 20-80 DEG C for 1-10h; drying the regenerated catalyst at low temperature; carrying out heat treatment on the dried catalyst in drying equipment at 200-500 DEG C for 1-3h, thereby obtaining a regenerated SCR denitration catalyst. The method has the beneficial effects of low treatment cost, simplicity in operation, easiness in automation and continuity, low corrosion to equipment, and good regenerating method and regenerating effect.

The present invention relates to one kind of functional biological carbon fiber and its preparation process and application as biomembrane carrier. The biomembrane carrier is prepared with polyacrylonitrile carbon fiber, and through electrochemical surface treatment in 5-20 % concentration ammonium bicarbonate electrolyte to increase the surface acid oxygen containing functional groups and raise wettability, and gluing with water soluble epoxy resin in the amount 0.5-2 %. The biomembrane carrier can fix nitrobacteria, sulfate reducing bacteria and anaerobic methanogen. It may be used in treating high concentration acrylon waste water, and can eliminate sulfate, COD and ammonia nitrogen effectively. In addition, the biomembrane carrier is easy to regenerate and has no secondary pollution.

The invention relates to a high silicon-containing waste water in an oil field reuse boiler pretreatment technology and an apparatus. The pretreatment technology comprises the following steps: adjusting the high silicon-containing waste water in the oil field and adding a reverse demulsifier; depositing the adjusted waste water, separating oil and water and removing the impurity in the waste water; adding a salt substance in the waste water after deposition treatment and performing air floatation treatment, removing an dissolved organic matter and oil, filtering the waste water after the air floatation treatment and removing suspended matters; using filtering weak acid resin for preliminarily softening the filtered waste water, reducing the concentration of high valent cationic to ppm grade, using chelate resin for deeply softening the waste water after preliminary softening, and reducing the concentration of high valent cationic to ppb grade to obtain the high silicon-containing waste water after pretreatment in the oil field. The invention also provides the high silicon-containing waste water in oil field reuse boiler pretreatment apparatus.

The invention relates to a deep softening method of thick oil sewage, which comprises the following steps: preterating thick oil sewage to remove impurities in the thick oil sewage, and carrying out preliminary softening treatment with a macroporous weak acid resin until the pH value of the thick oil sewage reaches 7-9 and the temperature reaches 57-80 DEG C; passing the pretreated thick oil sewage through an adsorption tower or adsorption column filled with a chelating resin at the flow rate of 20-30 BV/h to carry out adsorption treatment; and when the adsorption reaches the leakage point, obtaining the thick oil sewage subjected to deep softening. The method provided by the invention is a treatment process capable of efficiently softening thick oil sewage according to the water quality characteristic of the thick oil sewage; and the method provided by the invention can still be used repeatedly in a thermal recovery boiler without generating scales after saving the silicon removal system.

The regeneration method of CuO/Al2O3 desulfurizer is that the CuO/gamma-Al2O3 desulfurizer for absorbing sulfur can be reduced and regenerated in the atmosphere containing ammonia gas, its regeneration temp. is 350-500 deg.C, space velocity is 500-3000 hr (-1) and regeneration time is 30-90 min. Its regeneration process is simple, its secondary desulfurizing activity is stable, the SO2 produced in the course of regeneration can be combined with unreacted NH3 under the condition of low temp. to form solid ammonium sulfate salt.

The invention discloses a simultaneous desulfurization and denitration catalyst and preparation method of the simultaneous desulfurization and denitration catalyst. The desulfurization and denitration catalyst is composed of 60-80 parts by weight of carrier activated carbon (AC), 2-40 parts by weight of active ingredient neodymium oxide (Nd 203) and 0-20 parts by weight of promoter cobalt monoxide (CoO), wherein the total parts by weight of the activate ingredient and the prompter is 2-40. Detailed preparation method is explained in an introduction book. The simultaneous desulfurization and denitration catalyst and preparation method of the simultaneous desulfurization and denitration catalyst has the advantages of being wide in catalyst source, easy to obtain, easy in a preparation and regeneration method, high in catalyst mechanical strength, small in erosion, high in using efficiency of raw materials, suitable for mass production, high in catalyst activity, wide in operation temperature range, capable of being tested in a simulation test for a long time within a temperature range from 350 DEG C to 500 DEG C, and capable of acquiring a desulfurization denitration rate over 90 percent.

The invention discloses a method for increasing yield of propylene by using C4 fraction in ethylene plants and oil plants. In order to solve the problems of catalyst stability and regeneration in the prior art for preparing propylene from C4 olefins, high-silica zeolite and silicon oxide are selected as the main components of the catalyst, and basic oxides and acidic oxides are used for modification to prepare the olefin conversion catalyst, wherein the basic oxides are preferably calcium oxide and lithium oxide, and the acidic oxides are preferably boron oxide and phosphorus oxide. After being tested, the catalyst has favorable stability, and various properties can be restored after the catalyst is regenerated. The application method of the catalyst comprises the following steps: using the mixture of raffinate I or etherified C4 as the raw material, exchanging heat, preheating, contacting with high silicon/aluminum ratio zeolite catalyst in a fixed bed adiabatic reactor to generate the reactant mixture containing ethylene and propylene, exchanging heat, cooling and separating to obtain propylene, ethylene and the like for cycle use. The invention provides an industrially available method.

The invention belongs to the technical field of applications of new materials and specifically discloses an application of a covalent triazine framework (CTF) adsorption material with an excellent adsorption removal effect in removal of organic dyes in a water phase solution. The material has a good effect when used for adsorption removal of organic dye molecules in industrial wastewater, and the adsorption removal effect of the adsorption material against different types of the organic dye molecules is further considered under different acidic and alkaline conditions. The results show that the material has excellent adsorption capability against the organic dye molecules, the removal effect is particularly obvious against cationic dye molecules, and the material can also be recycled. The adsorption agent belongs to a polymer material, is environment-friendly and excellent in performance, and has industrial application prospects against industrial sewage treatment.

The invention discloses preparing and regenerating methods of hydrophobic coating activated carbon capable of improving adsorption to water-containing organic gas. The preparation method comprises the steps that 1, activated carbon is cleaned and dried for use; 2, a cross-linking reaction is conducted through heating and condensing methods, a hydrophobic polymer material is loaded on the cleaned and dried activated carbon, and the hydrophobic coating activated carbon is obtained. The regenerating method comprises the step that after the hydrophobic coating activated carbon is used for adsorbing the water-containing organic gas, regenerated activated carbon is obtained through a heating method under the protection of inert gas. The preparing and regenerating methods of the hydrophobic coating activated carbon are simple, needed equipment is simple, the prepared hydrophobic coating activated carbon can significantly improve adsorption to the water-containing organic gas, and the adsorption capacity of the regenerated activated carbon to the water-containing organic gas is not obviously reduced.

The invention discloses a environment protection handling method of industrial dumping phosphating liquid, which comprises the following steps: comprising regenerating utilization or inverting utilization; testing the known dispense waste phosphating liquid; checking the free acidity, total acidity and content of each effective composition; comparing the checking result with original phosphating liquid; adjusting the changeable component to the original phosphating liquid; mixing the known or unknown dispense dumping phosphating liquid and basic material proportionally; getting microcosmic salt as rust-preventive pigment of rust-inhibiting primer. This invention possesses flexible method and simple component, which can keep predominance product performance.

The invention pertains to a catalyst and application technology field thereof, which relates to a framework modification acid-alkali difunctional ZSM-5 zeolite catalyst and a preparation method and applications thereof. H-ZSM-5 zeolite is adopted by the catalyst as substrate material, and the substrate material is heated and hybrid reacted with nitrogenous modified raw material solvent and steam, then the catalyst is prepared. Part framework oxygen atom of the ZSM-5 zeolite of the catalyst is replaced by amine (nitrogen) group, thus the catalyst has acid-alkali difunctional catalyst property; the catalyst has the advantages of high crystallinity, open pore canal, comparatively larger specific surface, good molecular disperse property, high strength and excellent wearing resistance. Reclaiming process of the catalyst is convenient, and the reclaimed catalytic performance recovers well. The catalyst shows excellent catalytic activity, selectivity and stability in catalytic reactions of MTO, MTP, ETE and other alcohols dehydration to alkenes. The preparation method of acid-alkali difunctional ZSM-5 zeolite catalyst is simple, preparation cost is comparatively low and industrialized potential application range is wide.

The invention discloses a method for removing and enriching ginkgolic acid from ginkgo biloba extract. The method comprises the following steps: carrying out column filling by taking a molecularly imprinted polymer of ginkgolic acid as column chromatography packing; then filling the column with a ginkgo biloba extracting solution; leaching the column with a mixed solution of cyclohexane and ethyl alcohol in a volume ratio of 10 to 1; finally, eluting the chromatographic column with alcohol so as to obtain an effluent, namely ginkgolic acid, wherein the alcohol can be of ethyl alcohol, isopropanol, n-propyl alcohol or n-butyl alcohol. A molecular imprinting technique is applied to the removal of ginkgolic acid during ginkgo biloba processing for the first time, so that compared with the traditional ginkgolic acid removal method, according to the method disclosed by the invention, ginkgolic acid with high purity is prepared while ginkgolic acid is removed by virtue of the directional enrichment effect of the molecularly imprinted-solid phase extraction column, thereby providing the source of a raw material for clinical pharmacological research on ginkgolic acid.

The invention provides a refining agent and a refining and purifying method of coal polymer grade glycol. The refining agent of coal polymer grade glycol is characterized by being activated carbon modified by acid etching pretreatment, wherein an acid solution used by pretreatment is a ternary mixed solution of inorganic acid, low carbon alcohol and water. The refining method of coal polymer grade glycol is characterized in that coal glycol sequentially passes through fixed bed layers filled with the refining agent, an over-entering and down-out sampling way is adopted, the refining temperature is 10-100 DEG C, and the liquid hourly space velocity is 0.5-8/h. The UV value of coal glycol refined by the method can reach the polymer grade standard (220nm>=75%, 275nm>=92%, 350nm>=99%). Compared with the prior art, the refining method provided by the invention has the advantages of simple process flow, high adsorption capacity and simple regeneration method. Verified by pilot plant tests of 300 tons of coal glycol per year, the effect is good.

The invention relates to an adsorbent for removing sulfur-and-oxygen-containing impurities from a light hydrocarbon material flow, and a preparation method and a regeneration method of the adsorbent. The adsorbent is prepared by expanding pores by using organic amine, adding an alkali metal salt solution which contains a small quantity of rare earth metals, blending and then adding an adhesive for rolling balls and forming, wherein activated aluminum oxide and kaolin are taken as raw materials; and performing high-temperature roasting and activating after low-temperature drying is performed, wherein the prepared adsorbent consists of Al2O3, SiO2, alkali metal oxides and trace rare earth oxides; the particle diameter of the prepared adsorbent is 2.5 to 5.5mm; the specific surface area of the adsorbent is 260 to 320m<2>/g; the pore volume of the adsorbent is 0.3 to 0.35ml/g. According to the adsorbent, electric charges on the surface of the adsorbent are distributed reasonably by the synergistic effect of introduced different types of rare earth metal elements, the removal precision and the adsorption capacity of the sulfur-and-oxygen-containing impurities by the adsorbent are greatly improved, and meanwhile, the selectivity of the adsorbent on polar molecules is greatly improved by introduced sodium silicate, and overall adsorption heat is reduced. The process is simple; the prepared adsorbent can be regenerated and recycled; the regeneration method is simple.