266results about How to "Well-developed pores" patented technology

The invention provides a method for preparing activated carbon powder with lignin from an alkaline papermaking black liquor. The method comprises the steps as follows: the lignin is extracted from the alkaline papermaking black liquor through acidification and is prepared after being purified; KOH (potassium hydroxide) is added after the lignin is carbonized; the mixture is placed in an ultrasonic water bath to be subjected to ultrasonic treatment for 30 to 35 min; and after being dried, the mixture of the lignin and the potassium hydroxide is heated and activated for 0.5 to 2.0 hours at 650 to 850 DEG C, so as to prepare the activated carbon powder. The method has the advantages that the process is simple; waste utilization is realized; and the prepared activated carbon powder has the effects of large specific surface area, high porosity, strong adsorption effect and excellent properties and can effectively remove heavy metals and organic pollutants.

The invention discloses a far infrared negative ion functional non-woven fabric. The far infrared negative ion functional non-woven fabric consists of a top surface layer, a back face layer and a fiber cotton layer clamped between the top surface layer and the back face layer, wherein the top surface layer and the back face layer are made of a non-woven fabric material. The non-woven fabric is prepared from the following raw materials in parts by weight through a melt blowing method: 100 parts of isotactic polypropylene, 3-4 parts of tourmaline, 2-3 parts of aluminum oxide, 1-2 parts of zinc oxide, 12-15 parts of tributyl phosphate, 1-2 parts of titanium dioxide, 6-8 parts of dibutyl maleate, 2-3 parts of 3-aminopropyltrimethoxysilane, 2-3 parts of polyethylene glycol, 3-4 parts of urea, 2-3 parts of grassleaf sweelflag rhizome, 1-2 parts of lily, 2-3 parts of kudzuvine root and 4-5 parts of aid. The non-woven fabric has far infrared, negative ions, antibacterial and deodorization functions. Due to the adoption of the isotactic polypropylene, the non-woven fabric has the characteristics of heat resistance, corrosion resistance, nontoxicity and no odor, is high in tensile strength and bonding property, does not produce dust or scrap, and has the functions of perfuming and health care.

The invention belongs to the petrochemical field, and relates to a method for preparing porous carbon through the co-pyrolysis of petroleum coke and oily sludge. The method comprises the following steps: (1) predrying oily sludge; (2) evenly mixing the obtained oily sludge and petroleum coke; (3) smashing, grinding and screening the evenly obtained oily sludge and petroleum coke mixture; (4) steeping the mixture into a composite activator solution, and drying; (5) putting the obtained mixture into a low-temperature reaction furnace for pre-activating; (6) putting the obtained product into a high-temperature reaction furnace for continuing activation, performing furnace cooling to normal temperature; (7) adding the obtained activated product in a hydrochloric acid or sulfuric acid solution for soaking, washing with distilled water to obtain a solid product, and drying the solid product to obtain the porous carbon material. According to the method, not only can the petroleum coke and oily sludge be recycled, but also the porous carbon material with high adsorptivity can be prepared.

The invention discloses a catalyst for reforming methane and carbon dioxide to prepare synthetic gas as well as a preparation method and application thereof and belongs to the technical field of preparation of catalysts. The catalyst takes compound active carbon as a carrier, takes nickel and cobalt as active components, and takes iron, potassium, cerium, copper or zinc as a cocatalyst component. The preparation method comprises the following steps: firstly, carbonizing, activating and modifying raw materials including brown coal and mao bamboos to prepare a compound carbon material; then, modifying and roasting the prepared compound active compound under the condition of 0.2MPa-10MPa by adopting an HNO3 solution to obtain a catalyst carrier; loading nickel, cobalt, iron, potassium, cerium, copper and zinc on the carrier with the help of ultrasonic waves through an excessive immersion method; and filtering, drying, roasting and reducing to obtain the catalyst. After modification, loaded active components of the catalyst are uniformly distributed and the activity is relatively high; and the carrier takes the brown coal and the mao bamboos as the raw materials so that the carrier is high in content of active oxygen functional groups, large in specific surface area and low in cost.

The invention discloses a catalyst for preparing synthetic gas by reforming of methane and carbon dioxide as well as a preparation method and application of the catalyst, and belongs to the technical field of preparing catalysts. The catalyst is characterized in that activated charcoal is adopted as a carrier, multi-metal matters of cobalt, zirconium and molybdenum are adopted as active matters, wherein the content of the activated charcoal is 80-89%; the content of the multi-metal matters of cobalt, zirconium and molybdenum is 11-20%. Raw materials preparing the activated charcoal are broad in source, low in price and easy to obtain; the prepared activated charcoal has good pore structures and large specific surface area and strong sticking function to active matters; the prepared multi-metal catalyst of cobalt, zirconium and molybdenum is favorable in catalytic performance; under normal pressure and at a temperature of 750 DEG C, conversion rate of methane reaches to above 90%; conversion rate of carbon dioxide reaches to above 87%; after a service life test of 300 hours, the catalyst performs excellent catalytic activity and stability.

The invention provides a method for preparing a porous adsorption material by using microwave low-temperature pore-forming activated granular red mud. The method comprises the following steps: taking a bonding agent which is 2-10 percent of mass of the red mud, uniformly mixing red mud wastes and the bonding agent, kneading into grains by using a granulator or by a hand and activating the red mud grains for 5-30 minutes at an activation temperature of 80-500 DEG C by utilizing microwaves to obtain the porous adsorption material. The red mud is activated by utilizing the selective heating and resonant sintering effects of the microwaves on iron and other matters in the red mud. The porous adsorption material prepared by the method has a pore volume of more than 0.0826 ml/g and a specific surface area of 18.62-24.25 m2/g, and the grain size can be different as required. The produced porous adsorption material has the characteristics of fine grain, high porosity, large surface area, strong hydroscopicity, good temperature-resistant stability and low cost and has the great advantage in aspect of wastewater adsorption and treatment.

The invention discloses a preparation method for a lithium silicate CO2 adsorbent. The CO2 adsorbent with the component being lithium silicate is obtained by selecting organic lithium salt and a silica sol as precusors of lithium and silicon dioxide, respectively; fully and uniformly mixing the organic lithium salt and the silica sol in a solvent; and calcining the mixture at a high temperature. In the preparation process, by adjusting the stoichiometric number proportioning of lithium and silicon dioxide in the lithium and silicon precusors, the optimization of the reaction is realized. The lithium silicate CO2 adsorbent which is excellent in performance is prepared by virtue of the method disclosed by the invention. The adsorptive property of the adsorbent reaches over 30-50% of the theoretical maximum adsorption. Moreover, in 40 cycles, the adsorbent pores are more developed as the cycle index is increased and the adsorption capacity is further enhanced as the cycle index is increased.

The invention relates to a treatment method for reverse osmosis concentrated water, in particular to a standard treatment method for the reverse osmosis concentrated water which is produced during sewage reusing. The treatment method comprises the following steps: the pH value of the reverse osmosis concentrated water is regulated to be 2.0-4.0, and electrolytic catalysis oxidation is carried out; water produced from the electrolytic catalysis oxidation is subjected to redox reaction in an electrolytic reactor, which is filled with iron-carbon fillers obtained through sintering of iron and carbon; hydrogen peroxide is then added, so that oxygenolysis is further achieved; the pH value is regulated to be 6.0-8.0, and a flocculant is added for flocculent settling; a supernate obtained from the flocculent settling enters an aeration biological tank, and a co-substrate is added for biological degradation. The COD of the reverse osmosis concentrated water with lower biodegradability, which is obtained through reverse osmosis reusing treatment after standard biochemical treatment, is reduced from 70-200 milligrams per liter to below 50 milligrams per liter, so that the strictest local emission standards can be met.

The invention discloses a method for adopting city sewage processing factory residual sludge and natural ilmenite as raw materials, and for producing active carbon by using zinc chloride as an activating agent. The method comprises specific steps that: the raw material sludge is dried until the water content of the sludge is below 10%; the sludge is mechanically crushed, and is sieved by using a sieve of 120 meshes; ilmenite is crushed, and is sieved by using a sieve of 200 meshes; the ilmenite is added into the raw material sludge with a proportion of 1.5-2%, and the mixture is well mixed; the pretreated raw material sludge is impregnated in a zinc chloride solution with a concentration of 3mol/L under normal temperature for 24h; and the impregnated sludge is dried by baking under a temperature of 80 DEG C for 24h, wherein a solid-liquid ratio (a ratio of the mass of the sludge to the volume of the zinc chloride solution) is 1:2; the bake-dried sludge is placed in a tube furnace (a heating speed is 10 DEG C/min, N2 is adopted as a protective gas, and a flow rate is 30L/h), the temperature is increased to 525-550 DEG C, and further carbonization is carried out for 40-60min (carbonization and activation are carried out simultaneously); the activated carbonized product is cooled to room temperature, and is washed by using a hydrochloric acid solution with a concentration of 3mol/l; the product is rinsed by using water with a temperature of 70-80 DEG C, until the product is neutral; the rinsed product is dried by baking, and is grinded, such that the active carbon finished product can be obtained.

The invention discloses a method of preparing an oil-extraction wastewater adsorbent by using pyrolysis residues of oil sludge for applying in sewage treatment of oil field, comprising the following steps: grinding and sieving the pyrolysis residues of oil sludge, carrying out acid dipping process, rinsing to neutral, mixing the pyrolysis residues of oil sludge with Teflon (binder), carrying out cold press for moulding, charring in a carbonization furnace, rinsing and drying. The method improves the adsorptivity of the pyrolysis residues of oil sludge and is applied successfully in the treatment of oil-extraction wastewater.

The invention relates to a process for treating excess sludge by utilizing fly ash. The method specifically comprises the following steps of: 1, feeding excess sludge to be treated which has the water content of between 80 and 90 percent, and fly ash in an amount which is 20 to 50 percent based on the mass of the excess sludge into a mixing agitator; fully mixing and reacting for 5 to 15min; feeding into a plate and frame dehydrator for dehydration to obtain sludge of which the water content is reduced to be between 35 and 45 percent; crushing the sludge into coarse particles with the particle size of between 3 and 5mm by using a sludge granulation device; feeding the sludge particles into a solar drying room, and drying for 24 to 48h at the temperature of above 40 DEG C and under the humidity of below 15 percent to ensure that the water content of the sludge is reduced to between 8 and 15 percent; and treating by sludge pulverization equipment and a high-speed airflow collision technology, wherein the particle size of sludge powder is 150 to 300 meshes and the water content is 5 to 10 percent after the treatment. The method has the advantages that: interstitial water, adsorbed water and capillary bound water in the excess sludge are absorbed into the fly ash; due to the characteristic of high permeability coefficient of the fly ash, the water in the fly ash is easily discharged; and the secondary pollution to the environment is avoided by appropriately treating the excess sludge.

The invention discloses a preparation method of high purity porous carbon. The preparation method comprises the following steps: mixing alkaline metal salt easily dissolved in water with a water soluble high molecular material for a pre-reaction to obtain a mixture, wherein the high molecular material is prepared from one or more of resin, cellulose and a cellulose derivative; then crushing the mixture to particles, the grain sizes of which are 0.01-5mm; heating the particles to 600-1000 DEG C for 0.5-8h at a heating rate of 1-20 DEG C/min in an inert atmosphere, and carbonizing and activatingthe particles to prepare porous carbon; and finally, soaking the cooled porous carbon with a solution to dissolve residual alkaline metal salt, and washing the porous carbon for many times and dryingthe same to obtain the porous carbon. According to the preparation method of high purity porous carbon, the specific surface area of the prepared porous carbon reaches up to 1200-2100m<2>/g; the residual alkaline metal salt can be fully dissolved and removed only with water without processes such as pickling, the ash content is lower than 0.5%, the porous carbon is free of impurities such as ferrum and chlorine, the product quality is high, the service life of the equipment is prolonged favorably, and the environmental pollution is reduced.

The invention discloses a method for preparing a high-performance carbon material from molasses. The method comprises the following concrete steps: firstly, subjecting beet molasses with sugar-containing concentration of 8.8% to 52.5% to dehydration and carbonization for 2 to 10 h under the condition of 120 to 180 DEG C, carrying out washing and then carrying out drying for 12 h under the condition of 120 DEG C so as to obtain a colloidal carbon sphere with a size of 1 [mu]m to 10 [mu]m, then pretreating the obtained colloidal carbon sphere for 1 h under the condition of 500 DEG C, then carrying out activating treatment with concentrated phosphoric acid or KOH, subjecting an obtained product to washing until the pH is equal to 6 to 7, then carrying out drying for 12 h under the condition of 120 DEG C, and carrying out heating treatment for 1 h under the condition of 800 DEG C by filling of nitrogen so as to obtain a porous carbon material. The invention has the following beneficial effects: the colloidal carbon prepared from the molasses by hydrothermal treatment, after regulation of the KOH, has more developed porosity, can maintain morphology of the carbon sphere, and has a particle size of 1 [mu]m to 10 [mu]m; whether the colloidal carbon is regulated by the phosphoric acid or etched by potassium hydroxide, the obtained porous carbon material has high yield and small loss; and specifically, the porous carbon prepared from phosphoric acid has a yield up to 79.2%.

The invention discloses a method for preparing a super capacitor based on biogas residue active carbon produced after biomass anaerobic dry fermentation. The method for preparing the super capacitor based on the biogas residue active carbon after biomass anaerobic dry fermentation performs preprocessing on the biogas residues after biomass anaerobic dry fermentation, then performs high temperaturecarbonization and activation, and immerse an obtained activated product with acid and wash and dry the obtained activated product to obtain an activated carbon as a material of the electrode of the super capacitor. The active carbon prepared through the invention has an aperture structure on which micro holes and middle holes are distributed, has a relatively high specific surface area and has relatively high specific capacitance and cycling stability and is a relatively ideal electrode material of the super capacitor. The method for preparing the super capacitor based on biogas residue active carbon produced after biomass anaerobic dry fermentation uses the biogas to prepare a super capacitor so as to realize high value utilization of the biogas residual and the obtained active carbon isstable in structure and developed in pores, has a relatively high specific capacitance and cycle stability and is a relatively ideal electrode material of the super capacitor.

The invention relates to an electrode polar plate, a preparation method thereof and a superbattery, in particular to a superbattery polar plate containing vacuum puffed grapheme, a preparation method thereof and a lead acid superbattery assembled thereby, and aims to solve the technical problems that a capacitive electrode material used in a conventional superbattery has small specific capacity and poor rate capacity. The superbattery polar plate containing vacuum puffed grapheme consists of a current collector and an electrode material coated on the current collector, wherein the electrode material contains a capacitive electrode active substance and a battery electrode active substance; the capacitive electrode active substance comprises vacuum puffed graphene; and the mass of the vacuum puffed graphene is 0.01-20 percent of that of the battery electrode active substance. The preparation method comprises the following steps: the electrode material including the vacuum puffed graphene is mixed into an electrode paste to be coated on the current collector, the superbattery polar plate is obtained after the electrode paste is dried, the polar plate serves as the positive and/or negative pole of the superbattery to be assembled into a superbattery, and the battery polar plate can be used for hybrid electric vehicle batteries and energy storage batteries.

The invention discloses a modifying tempering method in the sludge disposing course, which comprises the following steps: doping 1-50% pyrite or coal ash into sludge with water content at 70-80%; transmitting the mixture into stirrer; adding dried sludge with water content at 5-8%; adjusting the water content of sludge at 30-35%; drying the sludge; discharging.

The invention discloses porous silica gel air purifying particles and a preparation method thereof. The porous silica gel air purifying particles have the specific surface areas of 250-500m<2>/g, the pore volumes of 1.2-2.0mL/g, the average pore size of 5-50nm and the average particle size of 10-100mu m, have the characteristics of being large in specific surface areas, developed in pores, high in adsorption capacity and the like, can be used for absorbing gases such as formaldehyde, ammonia, total volatile organic compound (TVOC) and the like, and can be used for purifying the air and removing harmful gas. The surface of silica gel has free hydroxide radical, so that the porous silica gel air purifying particles are very high in adsorption capacity for polar materials such as formaldehyde, and the removal rate of formaldehyde reaches up to more than 85%. Furthermore, the silica gel silicon dioxide is high in purity, non-toxic and harmless, and does not contain any heavy metal, thus being an environment-friendly air purification product. The preparation method is mature in technology and easy in realization of industrial production.