30 results about "Water washing" patented technology

The method for preparing active carbon from bamboo raw material includes the following steps: (1). mao bamboo and waste produced by making bamboo wares are used as raw material, through cutting and screening, and screening bamboo scraps or screening bamboo scraps and making them form; (2). low temp. pyrogenic distillation carbonization of bamboo raw material in carbonization furnace, its pyrogenic distrillation carbonization temp. is 200-600 deg.C; (3). in the presence of micro oxygen placing the carbonized bamboo raw material into activating furnace and making activation by using superheatedsteam at high-temp., activating temp. is 400-850 deg.c; and (4) breaking or water washing activated active carbon, drying, sorting and sieving to obtain the invented product. Before carbonization thebamboo raw material can be soaked in mixed solution formed from zinc chloride and hydrogen peroxide or mixed solution formed from phosphoric acid and hydrogen peroxide. Its product not only possessesthe advantages of all the wooden active carbons, but also its methylthionine chloride decolouring power can be raised by 20%.

The invention relates to a stainless steel plate 8K mirror surface processing method, which is characterized in that the method comprises the following steps of: 1) water washing: cleaning sundries on the surface of a stainless steel plate; 2) rough polishing: polishing the surface of the stainless steel plate by using a rough polishing abrasive tool, i.e. a graphite wheel till the surface is evenly treated and is free of pocking marks, wherein the polishing gap is half of diameter of the polishing wheel; 3) precise polishing: precise polishing the surface of the stainless steel plate by using a precise polishing abrasive tool, i.e. a wool felt, in combination with polishing solution till the surface is free of wheel knurls and fine scratches and is uniform; 4) water washing and drying: washing the stainless steel plate with water and blow-drying the stainless steel plate by using a dryer; and 5) film sticking: sticking a film by using a stainless steel plate film sticking machine. By using the stainless steel plate 8K mirror surface processing method, the surface of a stainless steel plate production can be polished to an 8K mirror surface from a 2B or rougher surface, the mirror surface is bright, gorgeous, attractive and generous, and the processed product satisfies the requirements in SN/T1671-2005 Rules for Inspection of Surface Quality of Stainless Steel Decoration Sheets for Export.

The invention discloses a method for refining rice bran oil by using short distance distillation. The method is implemented by putting crude rice bran oil in a buffer pot directly, transferring into a primary film evaporator by a pump for dehydration and desaeration, performing primary dehydration and desaeration under conditions of temperature being 60-120 DEG C and pressure being negative 0.8MPa to negative 0.95MPa; pumping the dehydrated and desaerated rice bran oil into a secondary short distance evaporator for deacidification with temperature controlled at 100-200 DEG C and pressure at 100-0.1Pa to obtain oleic acid with high acid value and rice bran oil with low acid value. The invention avoids heavy pollution processes of alkali refining and neutralizing chemical process for obtaining soda soap and process discharging waste water of washing when processing rice bran oil, the procedure is simple, high value oleic acid and low acid value rice bran oil can be distilled and separated, and the separation process is a physical process, the rice bran oil has no loss and the yield is very high.

The invention provides a preparation method of polyacrylonitrile-based hollow carbon fibers. Lignin and polyacrylonitrile are dissolved in a solvent for defoaming at 25-80 DEG C, the obtained spinningsolution is sprayed into coagulation bath through a circular spinneret plate, hot-drawing is performed in pure water, hollow primary fibers are obtained, and the polyacrylonitrile-based hollow carbonfibers are obtained after water washing, drying, pre-oxidation and carbonization. The method has the advantages of having good separation and adsorption effect for medium and large molecules, good solvent resistance and long service life.

The invention relates to a preparation method of rice hull carbon based solid sulfoacid. The preparation method of the rice hull carbon based solid sulfoacid which can be applied to various acid catalyzed reactions. The preparation method of the rice hull carbon based solid sulfoacid includes the following steps: mixing rice hulls with concentrated sulfuric acid, heating and stirring the mixture, conducting partial carbonization, obtaining solid materials, filtering, water washing and alcohol washing, and obtaining the carbon based solid sulfoacid. The sulfoacid preparation method of the rice hull carbon based solid is simple in operation, short in reaction time, high in density of obtained carbon based solid sulfoacid and capable of bring convenience for industrial implementation and the like, and providing a novel method.

The invention relates to a particle-size-controllable nano and sub-micron CeO2 preparation method which is characterized by comprising the following steps: by taking cerium nitrate as a solution, adding high molecular surface composite dispersant into the solution, heating the solution to 70-100 DEG C, adding a precipitant solution while stirring in the solution, filtering the precipitate, and then firing at 400-550 DEG C to obtain CeO2 having different particle sizes. The invention has the following advantages: the nano and sub-micron CeO2 prepared by controlling the concentration of the cerium nitrate and controlling the combination and addition of the composite dispersant based on a chemical precipitation method through precipitating, filtering and firing can achieve particle size controllability; the method omits water washing and drying operations; and the preparation method is simple in related equipment and steps, low in cost, low in energy consumption, simple to operate and controllable in particle size.

The invention discloses a method for making a coated filter cloth through a wet process. A technical scheme adopted in the invention is characterized in that the method comprises the following steps: calendering the coated surface of a filter cloth, coating or dip-coating the calendered surface of the filter cloth with a coating agent of an organic polymer material having the advantages of high porosity, smooth surface, good elasticity and good wear resistance through a coating or dipping device, immersing the coating agent coated filter cloth in a coagulation bath, controlling and adjusting the temperature of the coagulation bath and the detention time in order to realize required porosity and film layer thickness, washing with water, and drying. The obtained coated filter cloth changes deep filtration to surface layer filtration, so a filtered material does not aggregate in the apertures between yarns of the filter cloth, the obstruction of the filtered material in the apertures of the filter cloth is avoided, the possibility of the obstruction of the filter cloth by the filtered material is greatly reduced, the filtering efficiency is improved, the energy consumption of a filtering system is reduced, the filter cloth obstruction is reduced, the service life of the filter cloth is prolonged, and the production cost is reduced.

The invention discloses a preparation method of chemically-silvered active carbon as composite conductive filler. The preparation method is characterized by comprising the following process steps: a, pretreating the active carbon powder, namely performing alkaline cleaning on the active carbon powder by use of a NaOH solution so as to remove partial grey substances of the active carbon powder, washing by using water until the solution is neutral and drying firstly, and then performing oxidization treatment on the active carbon powder by use of a HNO3 solution, washing by using water until the solution is neutral and drying for later use; b, directly adding the modified active carbon powder to the prepared chemical silvering solution, heating until a certain temperature, reacting for a while and then carrying out suction filtration, water washing and drying; and c, sensitizing the reacted and dried active carbon by use of a stannous chloride solution and activating the active carbon by use of a silver nitrate solution, next, adding the active carbon to the chemical silvering solution, reacting for a while at a normal temperature and then carrying out suction filtration, water washing and drying. The chemically-silvered active carbon prepared by the method is low in weight and good in electrical conductivity; the chemically-silvered active carbon has a porous structure and can be grafted and mixed with resin favorably; due to silver deposition in the pores of the active carbon, the deficiency of the electrical conductivity of the active carbon due to the pores is compensated.

The invention discloses a double shaft furnace system and method for joint production. The double shaft furnace system comprises a first mixing tank, a first compressor, a heating furnace, a first shaft furnace, a dust removal system, a conversion system, a first CO2 remover, a second mixing tank, a modified heating furnace, a second shaft furnace, a water washing tower, a second CO2 remover, a second compressor and connecting pipelines between all the above components. The invention further discloses a method for jointly producing iron-containing products by using the system. According to the system and the method, the two shaft furnaces with different working conditions are combined based on the different characteristics of a vanadium titano-magnetite mineral resource and an iron ore concentrate resource so as to realize direct reduction of different minerals; different pressures of reaction conditions of the two shaft furnaces are utilized, so that the gradient use of the pressure is effectively realized, the energy utilization rate is improved, the equipment investment cost is reduced to a certain extent, and the equipment complexity is reduced; and the characteristic that the volume ratio of hydrogen to carbon monoxide in effective reducing gas in the first shaft furnace is different from the volume ratio of hydrogen to carbon monoxide in effective reducing gas in the second shaft furnace is effectively utilized, so that efficient utilization of energy and resources is realized.

The invention provides a high-efficiency and environmental-protection dyeing post-processing method of a medium or dark terylene knitted fabric. The method is characterized in that high-temperature dyeing raffinate is discharged under a high pressure in the dyeing and cooling process, heat energy conduction of the raffinate is used to make clear water injected to a dye vat insulated and heated, and the discharged dyeing raffinate is discharged after being cooled to 70 DEG C or less, wherein the heat energy conduction of the raffinate is realized through a heat exchanger; the heat exchanger comprises a water inlet assembly and a water outlet assembly; the water inlet assembly and the water outlet assembly are arranged at intervals; and a swiveling channel is arranged in the water outlet assembly. The above environmental-protection and low-carbon cleaning method reaches the dyeing effect (such as color fastness to water washing and bleeding) of traditional technologies, and has the advantages of time saving, increase of the production efficiency, energy saving and environmental protection.

The invention relates to a preparation method of a 3853 oxide (with the full name of 2, 2, 6, 6-tetramethyl-piperidinooxy stearate), and aims to solve the problem about generation of the product in the market at present. The manufacturing technique of the 3853 oxide adopts and introduces a novel structure, adopts a transesterification route, post-processing adopts oxidation filtering to replace previous water washing, so that waste water discharge is reduced. The product grade is improved through introducing a polymerization inhibitor 701 into a group, and besides, the methyl stearate raw material is low in cost, so that popularization of the photostabilizer market is facilitated.

The invention relates to the field of aluminum alloys, in particular to an aluminum alloy and a preparation method thereof. The aluminum alloy comprises an aluminum alloy matrix and a hard anodic oxide film located on the surface of the aluminum alloy matrix. The surface of the hard anodic oxide film is provided with micropores. Particles generated in the hard anodic oxidation process adhere to the inner walls of the micropores. The preparation method comprises the steps that, an aluminum alloy precursor needing to be treated is subjected to S1 alkali cleaning, S2 pickling, S3 acid etching, S4hard anodic oxidation, S5 hot water washing, S6 passivation and S7 sealing, thus the aluminum alloy is obtained, wherein an electrolyte used in hard anodic oxidation in the S4 comprises the components of phytic acid, oxalic acid, citric acid, boric acid and lactic acid. The prepared aluminum alloy is higher in corrosion resistance, higher in hardness and better in wear resistance, and can be applied to the fields of aerospace, aviation and computer manufacturing, automobile and rail train manufacturing and the like.

The invention discloses an online wet and hot water vapor recovery device for electroplating treatment. The recovery devicecomprises a box body (2), an air inlet (6) and an air outlet (1) are formed in the box body, the box body is installed on a vertical section of a branch exhaust pipe of an air draft system on the side of a hot water washing tank of an electroplating production line through the air inlet and the air outlet, a rotating shaft (4) is vertically installed in the box body, an impeller (3) is installed on the rotating shaft through a bearing, the surface of the impeller is covered with a hydrophilic adsorption material, the whole impeller is arranged in an umbrella shape in the vertical direction, a hot water collecting and storing device (5) is arranged under the impeller, and the hot water collecting and storing device is communicated with the hot water washing tank (7) through a water conveying guide pipe. Water and heat in wet and hot water vapor are recycled, so that the production and operation cost of electroplating treatment is reduced, and meanwhile, the problem that due to the wet and hot water vapor, leakage and venting of a follow-up waste gas exhaust pipeline are increased is effectively solved.

The invention discloses a preparation method of a cellulose aerogel-based efficient air filtering membrane, and belongs to the field of air filtering materials. The preparation method comprises the following steps: performing water washing, soda boiling, oxidation and the like on microbial cellulose, dispersing in a mixed solution of tert-butyl alcohol and water to obtain cellulose dispersion liquids with different concentrations, pouring the cellulose dispersion liquids into molds for molding, and performing freeze drying to obtain the microbial cellulose aerogel-based efficient air filtering membranes with different thicknesses. The microstructure of the air filtering membrane is a three-dimensional nanometer network formed by microbial cellulose nanofibers, the macroscopic form of the air filtering membrane is in a thin film shape, and the membrane forming process is a physical process, is free of chemical reaction and is green, simple and convenient; the air filtering membrane with the thickness of 1-5mm prepared by the method has high filtering efficiency of removing PM0.3 at a high air flow rate, the highest filtering efficiency can reach 99.9% or above, the air resistance is less than 250Pa, the preparation process is simple, and large-scale production is facilitated.

The invention discloses a cotton imitation wax printing process, which comprises pretreatment, printing, drying, baking steaming, water washing, stenting, and inspection packaging, wherein the components of the printing formula comprise seaweed paste, a disperse dye, a printing penetrant, a defoamer, a thickener and synthetic printing paste according to a mass ratio of 400:0.01-0.5:0.1-0.15:0.1-1:0.5-1:100, and the printing back surface drying temperature is 30-50 DEG C higher than the printing front surface drying temperature during the drying. According to the present invention, the wax printing style with the same front surface and back surface effect is achieved by using the thermal motion of the disperse dye molecule, designing the printing formula and setting the drying temperature difference, and the cotton imitation wax printing process has characteristics of simple process, less sewage discharge, low energy consumption and high production efficiency.

The invention relates to the technical field of textile printing and dyeing, in particular to a dyeing and finishing long vehicle finishing method of bio-enzyme treatment. The method comprises the following procedures of fuzzy agent padding through a stenter, sueding, polishing enzyme padding through the stenter, wet stacking in a thermostatic chamber, air washing and water washing and drying. According to the dyeing and finishing long vehicle finishing method of bio-enzyme treatment, the manner of combining sueding, bio-enzyme treatment and air washing is adopted, the small-batch production limitation of airflow or overflow bio-enzyme water washing is broken through, and the method is suitable for long vehicle large-batch production; and meanwhile, the quality difference generated after treatment of airflow or overflow through different single cylinders is avoided, the production number limitation of bio-enzyme water washing is broken through, the single cylinder difference of bio-enzyme water washing is solved, and the production efficiency and quality stability are greatly improved.

The invention relates to a manufacturing method of a weft knitting polyester velvet blanket, and belongs to the technical field of weaving. The method comprises the steps of raw material selection, weaving, pre-finishing high-speed brushing, pre-finishing pre-shaping, printing (or pad dyeing), drying, color fixing, water washing, shaping and drying, post-finishing high-speed brushing, high-temperature bundle rolling and shaping, so that the weft-knitted polyester velvet blanket is obtained. The method is simple in process, development and utilization of the low-gram-weight blanket are achieved, and the blanket is soft and soft in hand feeling and remarkable in ventilation effect. The process flow is reduced and the cost is saved. A 3 + 3 weaving mode is adopted, so that the problem that the bottom of a common weft-knitted blanket is fallen off is solved. Original heavy down products can be replaced by soft, breathable and bulky low-weight down products, so that products which are simple in process and low in cost can be rapidly produced.

A process for removing metals from hydrocarbon oil by use of the by-product obtained in preparing fatty acid by oxidizing paraffin wax includes mixing the hydrocarbon oil with said by-product as demetalating agent, water and demulsifier, emulsifying to change the metals into water-soluble matches to be dissolved in water, and oil-water separation. Its advantage is high efficiency.

The invention discloses a preparation method of a dye. The dye is 3,3'-[(9,10-dihydro-9,10-dioxo-1,4-anthryl-di-yl)diimino]bis[N-cyclohexyl-2,4,6-trimethyl]benzenesulfonamide. The target product is prepared through a reaction of solvent blue 104 and chlorosulfonic acid as initial raw materials. Thionyl chloride adopted in the invention has little influence on the reaction and has large influence on the quality of the product; and the reaction temperature and the water washing temperature are controlled in the reaction in order to realize no stickiness or caking of the target product.

The invention discloses a novel water-washing protection oil and a preparation method thereof, and relates to the technical field of water-washing protection oil used in a process. The water-washing protection oil comprises the raw materials by mass: 69%-75% of water-based epoxy resin, 0.7%-1% of a water-based epoxy curing agent, 0.6%-0.8% of a dispersant, 25%-28% of a talcum powder, 5%-9% of diethylene glycol monobutyl ether, and 0.1%-0.3% of a defoaming agent. The water-washing protection oil is good in film-forming performance, low in viscosity, fast in drying speed, suitable for use in a packaging film local aluminum plating process, simple to use, and convenient and practical.

The invention provides a denim fabric printing and dyeing process. The technical problems in the conventional printing and dyeing process that the fabric dye-uptake is low, the fabric easily fades due to repeated washing, the printing and dyeing effect is poor, and the like are solved. The denim fabric printing and dyeing process comprises the following steps: a, size mixing and printing, namely mixing printing paste, matching coating printing paste and sulfur dyestuff printing paste, printing a gray fabric through a decorating machine, and drying at the temperature of 90-98 DEG C; b, ageing, ageing the printed gray fabric through an ageing box at the temperature of 102-108 DEG C for 18-30 minutes; c, soaking, namely soaking the aged gray fabric by using sodium bicarbonate, and adding activated carbon; d, washing, namely washing the soaked gray fabric with hot water, soaping, cleaning with clean water, and finally, cleaning with clean water and dewatering; and e, drying, namely drying the washed gray fabric through a drying oven, wherein the drying temperature is 80-90 DEG C, and the drying time is 14-20 minutes, thereby obtaining the finished denim fabric. The denim fabric printing and dyeing process disclosed by the invention has the advantage of excellent printing effect.

The invention provides a preparation method of officinal nano-zinc oxide. Zinc hydroxide, a surfactant and deionized water are added into a high pressure reactor according to a certain proportion; stirring is performed under certain temperature for reaction; after the reaction is ended, obtained solution is subjected to suction filtration, deionized water washing, ethyl alcohol washing and deionized water washing, and is dried under a pressure reduction condition, thus obtaining the officinal nano-zinc oxide.

The invention discloses a fly ash enhanced washing and high-salinity wastewater resource utilization method. According to the fly ash enhanced washing and high-salinity wastewater resource utilization method, firstly, fly ash is subjected to water bath heating washing, the heating temperature ranges from 50 DEG C to 60 DEG C, a large number of soluble anions and heavy metal ions in the fly ash can be efficiently removed through the water bath heating washing mode, most heavy metal is washed out, and washing liquid and harmless fly ash are obtained; heavy metal precipitates in the washing liquid are removed in an inorganic-organic flocculating agent combined mode, purified high-salt water washing liquid and heavy metal precipitates are obtained, and the total heavy metal removal rate in the washing liquid can reach 99%; and the purified high-salinity water washing liquid contains about 6-15 wt% of potassium and sodium salts, the high-salinity water washing liquid is subjected to evaporative crystallization through an MVR evaporator, potassium salts are obtained through cooling crystallization, the potassium salts and mixed salt waste liquid are obtained through centrifugal separation, the mixed salt waste liquid is electrolyzed to obtain the sodium salts, recovery of the potassium salts and the sodium salts is achieved, and the potassium salt vacancy in China can be relieved.

The invention discloses a wafer clamp and a cleaning method. The method comprises the following steps of firstly, nitric acid solution soaking, wherein the clamp is put into a soaking pool, and a nitric acid solution is poured for soaking; secondly, deionized water washing, wherein the nitric acid solution on the clamp soaked in the step S1 is washed with deionized water; thirdly, silver-chromiumstripping solution soaking, wherein the clamp washed in the step S2 is put into a new soaking pool, and a silver-chromium stripping solution is poured for soaking; fourthly, deionized water washing, wherein the silver-chromium stripping solution on the clamp soaked in the step S3 is washed away; fifthly, ultrasonic cleaning, wherein the clamp cleaned in the step S4 is put into an ultrasonic pool to be subjected to ultrasonic cleaning; sixthly, dehydration, wherein dehydration treatment is conducted on the clamp subjected to ultrasonic cleaning in the step S5 through absolute ethyl alcohol, andthe clamp is washed for 300 seconds; and seventhly, baking, wherein the clamp dehydrated in the step S6 is put into a baking oven of 80 +/-10 DEG C to be baked for 30-60 minutes to finish clamp cleaning.