837 results about "Sodium chlorite" patented technology

The invention relates to a method for realizing desulfuration, denitration and demercuration of boiler smoke synchronously, wherein it comprises feeding smoke into cycle fluidize bed reactor, and injecting oxygen-enriched active absorber; said absorber is formed by coal ash at 20-70, lime hydrate at 27-80, additive at 0.5- 3 as kalii permangana KMnO4, sodium chlorite NaClO2, natrii chloridum NaCl, calcium hypochlorite Ca(ClO)2 or acetic hyctro peroxide CH3COOH. The invention's desulfuration efficiency can reach 90%, the denitration efficiency can reach 60%, and the demercuration can reach 50%, with low cost and non pollution.

The invention relates to a preparation method of a homogenized fine nano-cellulose fiber. The preparation method can solve the problems of uniform diameter distributor of biomass nano-cellulose prepared by the existing strong acid hydrolysis method and the high-strength mechanical shearing method, easy gathering among the nano-fiber and a narrow range of applications of the TEMPO catalytic oxidation method. The preparation method comprises the following steps: 1) extracting biomass fiber with benzyl alcohol solution; 2) carrying out treatment by using acidified sodium chlorite; 3) carrying out gradient treatment with alkaline liquor; 4) using TEMPO, sodium bromide and sodium hypochlorite for catalytic oxidation treatment; 5) using sodium chlorite for treatment; and 6) carrying out nano-scale processing by using the long-term stirring method, the ultrasonic method or the high-pressure homogenization method, drying, and then obtaining the homogenized fine nano-cellulose fiber. The fiber has the uniform diameter distribution, the diameter is 3-5nm, the length-diameter ratio is not less than 500, the fiber is mutually interwoven into a mesh snarling structure, and the method is applicable to preparing the nano-cellulose fiber by using wood pulp, paper-making pulp, wood, bamboo and crop straw.

A massive body, e.g., a tablet, for producing a solution of chlorine dioxide when the massive body is added to liquid water. The massive body comprises a metal chlorite such as sodium chlorite, an acid source such as sodium bisulfate and a source of free halogen such as the sodium salt of dichloroisocyanuric acid or a hydrate thereof. The concentration of free halogen in the solution will be:

• • (a) less than the concentration of chlorine dioxide in said solution on a weight basis and the ratio of the concentration of chlorine dioxide to the sum of the concentrations of chlorine dioxide and chlorite anion in said solution is at least 0.25:1 by weight; or
  • (b) equal to or greater than the concentration of chlorine dioxide in said solution on a weight basis and the ratio of the concentration of chlorine dioxide to the sum of the concentrations of chlorine dioxide and chlorite anion in said solution is at least 0.50:1 by weight.

An antimicrobial agent includes silver-chloro complex salts and chloride, and further oxidizing agents such as sodium hypochlorite or sodium chlorite. As a result, it is possible to provide the antimicrobial agent having immediate and residual disinfecting and antimicrobial effects on bacteria and molds of a wide variety of species and capable of demonstrating instantaneous deodorizing effect. The antimicrobial agent includes the silver-chloro complex salts and chloride, and further a compound, for example, such as alcohols or surfactants, which has compatibility with a solvent such as water which dissolves the chloride. As a result, it is possible to provide the antimicrobial agent which can be used conveniently at the stored concentration, and which has immediate effect and cleansing ability without causing rust or deposition of salts in use. Further, the antimicrobial agent includes the silver-chloro complex salts, and chloride, for example, such as polyaluminium chloride or benzalkonium chloride, which has at least (I) a property capable of existing as a supersaturated aqueous solution in the presence of a crystal nucleus at least at room temperature for 24 hours or longer and (II) a property capable of being decomposed when dissolved in water.

A stable solid ClO2 disinfectant is prepared from sodium chlorite, solid acid, composite coating agent and composite trigger through compounding and passivating. Its advantages are high stability and safety, and long storage period.

The invention discloses a stabilized chlorine dioxide disinfection solution and its preparation method. The disinfection solution is composed of component A and component B, wherein component A is stabilized sodium chlorite solution consisting of chlorite, a stabilizing agent, a complexing agent, a pH stabilizing agent, and the balance a pH conditioning agent and water; component B is an activating agent, which can be at least one of citric acid and hydrochloric acid. The product of the invention has the advantages of stability, long shelf-life, and a validity period up to 2 years, and can be used as a disinfectant. The disinfection solution of the invention has simple process and convenient usage. In the invention, the original mode of pH value adjusting by acid is changed, and zinc chloride and zinc acetate are employed to remove sodium hydroxide in raw materials and reach the purpose of pH value adjusting. Simultaneously, zinc acetate and sodium hydroxide generate no amphoteric substance, and the actual operation is easier.

The invention provides sterilizing bath lotion for furry pets, which comprises surfactant, humectant, hair care agent, chelating agent, bactericide, thickening agent and essence, wherein the bactericide is one of stable liquid chlorine dioxide, stable solid chlorine dioxide or sodium chlorite. The sterilizing bath lotion of the invention overcomes the defects of the existing product or the prior art, and really realizes synchronous completion of three effects of removing dirt, caring hair and quickly sterilizing. The sterilizing bath lotion has the advantages of mild property, no any stimulation to the fur of animals and the skin of people, good dirt removing and sterilizing effects, low foam, easy cleaning, no residue, safety and environment friendliness, and meanwhile plays a role in caring the fur of the animals so that the fur of the washed pet does not knot; and the sterilizing bath lotion is glossy, flexible and easy to card, and is quite suitable for the daily care of the furry pets.

The invention discloses a solid chlorine dioxide sustained-release material and a preparation method thereof, raw materials comprise sodium chlorite, a solid acid, a carrier material, a coating agentand auxiliary agents; the carrier material is silicon dioxide aerogel micro powder; and the auxiliary agents include an accelerator, a stabilizer, and a binder. The solid chlorine dioxide sustained-release material can realize a controllable release rate of chlorine dioxide by silicon dioxide aerogel micro powder loading, polymer coating and accelerator adjustment, and has more excellent air purification effect; the safety, long-term stability and stability of the chlorine dioxide released by the solid chlorine dioxide sustained-release material can be realized by controlling of the mass transfer of a chemical reaction process for producing the chlorine dioxide; the solid chlorine dioxide sustained-release material product prepared by the method is convenient to use, can effectively removeair pollutants (such as formaldehyde), deodorizes (H2S), and sterilizes, air is purified, and the solid chlorine dioxide sustained-release material product is safe and environmentally-friendly, is stable and reliable in production process, high in efficiency and low in cost, and has a good market prospect.

The invention discloses a sustained-release chlorine dioxide disinfectant and a method for preparing the same. The method includes steps of S1, mixing sodium chlorite powder, silica gel powder and diatomaceous earth with one another according to certain proportions to obtain coating agents; S2, mixing the coating agents and carrier granules with one another, feeding the coating agents and the carrier granules into granulators, spraying adhesive into the granulators and carrying out coating, granulating and drying to obtain the sustained-release chlorine dioxide disinfectant; S3, packing the sustained-release chlorine dioxide disinfectant in air permeable bags. The sustained-release chlorine dioxide disinfectant and the method have the advantages that finished products of the sustained-release chlorine dioxide disinfectant prepared by the aid of the method are safe and reliable and are free of harm on human bodies; bacteria and viruses in air can be effectively killed by the sustained-release chlorine dioxide disinfectant, and harmful substances such as formaldehyde can be degraded by the sustained-release chlorine dioxide disinfectant; the finished products are long in shelf life,and the shelf lives of the finished products can be greatly prolonged under wet-insulation storage conditions.

The wet combined fume desulfurizing and denitrifying process with chloric strong oxidant enhanced urea has the fume to be treated contacted sufficiently with the mixed absorbent liquid containing urea and chloric strong oxidant inside the absorbing reactor so as to eliminate NOx and SO2 through absorption before being exhausted. The chloric strong oxidant is sodium chlorite, sodium hypochlorite, bleaching powder or their mixture. The process has high denitrifying efficiency, high fume purifying effect, simple structure, easy operation and small occupied land. The said process can reach NOx eliminating rate of 75-98 % and desulfurizing efficiency over 95 %.

The invention belongs to the technical field of biomass nanometer materials and discloses a nano-crystalline cellulose fiber high in carboxyl group content and preparation and application thereof. A preparation method comprises the steps of preheating fiber slurry for 0.5-1.5h with sodium periodate at the temperature of 50-60 DEG C; adding a sodium chlorite solution and acetum into the slurry to be reacted for 1-3h at the temperature of 30-50 DEG C, adding TEMPO, NaClO2 and NaClO, and performing microwave heating to the temperature of 55-65 DEG C to enable the mixture to be reacted for 1-3h; performing ultrasonic dispersion and freeze drying to obtain the nano-crystalline cellulose fiber high in carboxyl group content. According to the nano-crystalline cellulose fiber, hydroxyl at the positions of C2 and C3 of cellulose is oxidized into a formyl group which is oxidized into carboxyl by sodium chlorite, hydroxyl at the position of C6 is selectively oxidized into carboxyl through a TEMPO neutral oxidation system, and accordingly the total carboxyl group content of the fiber is greatly increased, and obtained products can be used for advanced treatment of waste water at the middle section of paper making.

Chlorine dioxide is produced at high conversion rates from aqueous sodium chlorite solution by electrochemical oxidation in an undivided electrochemical cell. The cell utilizes an anode of high surface area through which the aqueous sodium chlorite solution flows into an interelectrode gap between the anode and a cathode. Water or acidified water is fed into the interelectrode gap to function as catholyte and also to dilute the electrolyzed sodium chlorite solution to provide an aqueous solution of chlorine dioxide exiting from the electrochemical cell.

The present invention is directed to the a composition and method for microbial and odor control. In one embodiment, the method includes mixing amorphous calcium silicate impregnated with a chlorite salt to form a reactant, combining the reactant with an activator to form the composition, and applying the composition to the treatment area. The present invention also includes the preparation of a product usable as a disinfectant and deodorizer, wherein the product includes a mixture of an amorphous and a chlorite salt and wherein the product is packaged as a tablet, permeable sachet, or a permeable patch attachable to a plastic bag. The present invention may also be applied using several methods to reduce the spoilage of produce. The present invention further includes a method for producing chlorine dioxide in accordance with a step-function release profile.

A slowlly-releasing solid ClO2 for deodoring, sterilizing, disinfecting and antistaling purposes is prepared from sodium chlorite, quaternary ammonium salt, quaternary ammonium base, calcium chloride, iron chloride, aluminium sulfate, talc powder, calcium carbonate, and sodium dicarbonate through proportional mixing.

The invention belongs to the technical field of antibacterial mould proofing piece, relates to an improved solid slow release chlorine dioxide mold proofing piece for leather and the preparation method. The invention is characterized in that the new mould proofing piece comprises the sodium chlorite, the solid acid, the stabilizing agent, the adhesive and the desiccant. The invention can be produced according to the following steps: evenly mixing the sodium chlorite and the drying agent in proportion; adding solid acid and the stabilizing agent for even agitation; adding adhesive tabletting. Air permeable packing paper is used for packaging. The mould proofing piece can be used in the sea transportation of shoes and other leather products, the packaging period, the transportation period, the shelf period and long-term preservation.

A dry disinfectant composition for the production of aqueous solutions of chlorine dioxide of predetermined concentration is formulated of a mixture of lithium hypochlorite, sodium bisulfate and sodium chlorite. Special liquid and dry formulations are also contemplated for convenience of use, for quality assurance and for safety.

The invention relates to a slow-release chlorine dioxide solid disinfectant, which is formed by mixing sodium chlorite microcapsules and solid acid microcapsules according to a weigh ratio being 1:(1-2), core materials of the sodium chlorite microcapsules are sodium chlorite, a water-soluble organic matter layer and a water-insoluble high polymer material layer are sequentially covered outside the core materials, core materials of the solid acid microcapsules are solid acid or salts capable of releasing hydrogen ions, a water-soluble organic matter layer and a water-insoluble high polymer material layer are sequentially covered outside the core materials, the water-soluble organic matter is selected from polyvinyl alcohol, polyethylene glycol or polyacrylamide, and the water-insoluble high polymer materials are selected from polymethyl methacrylate, ethylene-vinyl acetate or polylactic acid. The disinfectant cannot be easily deliquesced, and the stability is high. After the slow-release chlorine dioxide solid disinfectant is placed into water, sodium chlorite and solid acid are respectively and slowly released onto the surfaces of the microcapsules, chlorine dioxide is generated through the reaction, the contact between the sodium chlorite and the solid acid is retarded, and good slow release performance is realized.

A method and composition and system which for the oxidation, clean up, removal and control of iron and iron deposits in water and the removal of iron deposits and bacterial bio-films from surfaces in water systems. The composition contains sodium chlorite, sodium hypochlorite and citric acid.