682 results about "Sodium hydrogencarbonate" patented technology

The invention discloses an organic selenium biologics and its preparation method, and method for producing selenium-rich vegetable using the same, wherein the preparation is prepared from water and the following components (by weight percentage) through mixing and fermentation, selenium dioxide : sodium hydrogen carbonate : methionine : brown sugar : carbamide : monobasic potassium phosphate : magnesium sulfate : manganese sulfate : calcium chloride = 35-45 : 35-45 : 10-20 : 45-55 : 1-10 : 1-10 : 1-4 : 1-4 : 1-10, the method of application comprises, diluting the organic selenium biologics to 50-200 times by charging water, spraying diluted organic selenium biologics liquid onto the vegetable leaves, stems or roots. The vegetable exerted by the organic selenium biologics contains rich selenium.

The invention discloses a method of recovering sodium sulfate from a lead-bearing desulfurized waste liquid. The method is characterized by comprising the following steps: after adding a complexing agent into the lead plaster-bearing desulfurized waste liquid, forming a lead carbonate precipitate of lead complex ions in the liquor by adopting carbon dioxide or sodium hydrogen carbonate, and then carrying out solid-liquid separation to obtain a sodium sulfate filtrate and the lead carbonate precipitate; adding anhydrous sodium sulfate and sodium hydroxide into the sodium sulfate filtrate obtained by separating lead carbonate, and cooling at low temperature to separate out sodium sulfate crystals; and returning the filtrate without the sodium sulfate crystals again for desulfurization of lead oxide-bearing wastes.

A method of producing additional sodium bicarbonate having a high degree of purity and obtaining a net reduction in effluent waste water, as compared to prior processes, when starting from trona ore is disclosed. The process entails utilizing the waste-water effluent stream from the conversion of trona ore to sodium carbonate as the feed for the conversion of sodium carbonate to sodium bicarbonate.

A method of producing sodium bicarbonate having a high degree of purity and obtaining a net reduction in effluent waste water, as compared to prior processes, when starting from trona ore is disclosed. The process entails utilizing the waste-water effluent stream from the conversion of trona ore to sodium carbonate as the feed for the conversion of sodium carbonate to sodium bicarbonate.

A preparation method for acidic silica sol in-situ modified acrylate emulsion includes the steps: firstly, diluting acidic silica sol with deionized water prior to adding small molecular alcohol, and then adding organo-siloxane with mixing to obtain modified acidic silica sol; then, utilizing the modified acidic silica sol, emulsifier, nuclear-layer monomers, deionized water and sodium bicarbonate to prepare seed pre-emulsion by means of pre-emulsification, adding the seed pre-emulsion into a reactor, heating up and adding initiator to initiate polymerization so that seed emulsion is prepared; and finally, adding emulsifier, shell monomers, initiator and deionized water into the reactor to prepare pre-emulsion by means of pre-emulsification, adding the pre-emulsion into the seed emulsion, replenishing initiator to hold, filtering after cooling to the normal temperature, and adjusting a pH (potential of hydrogen) value so that the modified acrylate emulsion is prepared. By the aid of the method, secondary dispersion of nano silica is avoided, stability of the emulsion is enhanced, and hardness, resistance to ultraviolet ageing and resistance to high temperature of an emulsion coating film are enhanced.

The invention relates to a pomegranate peel polyphenol antibiosis and antiphlogosis effervescent tablet as well as a preparation method and application thereof. The effervescent tablet is mainly prepared by raw material of pomegranate peel polyphenol, and auxiliary materials of sodium hydrogen carbonate, citric acid or tartaric acid, lactose, polyvinylpyrrolidone, magnesium stearate and superfine silica powder, has the functions of clearing heat, eliminating dampness, killing bugs and stopping itching, has strong suppression effect to women vagina pathogenic bacteria, features high safety, good stability, no obvious toxic or side effect, or drug tolerance, and provides convenience in using, carrying and storing for patients, is used for curing such diseases as vaginitis, vulvitis and the like caused by various trichomonad, epiphyte and bacteria, and can be used as preventability medicine for long-term use.

The present invention relates to a nano alumina material, and its production method includes the following steps: using sodium aluminate and sodium hydrogen carbonate solutions to make them directly implement reaction, then filtering, dispersing, washing and adding acid to make beat-dispersion and ageing to obtain the transparent sol for preparing nano alumina material, and using said sol to directly produce nano alumina powder or nano alumina ceramic filter membrane.

The invention relates to an LDPE (low-density polyethylene) fishing net filament, which comprises, by mass, 100 parts of LDPE; 0.3-0.5 part of UV-531; 0.3-0.5 part of DLTP; 0.3-0.5 part of zinc stearate; 0.5-1 part of barium stearate; 0.2-0.5 part of a light stabilizer; 10-15 parts of polybutadiene; 1-3 parts of carbon black; 5-10 parts of sodium hydrogen carbonate; 20-40 parts of butyl rubber; 20-40 parts of CPE; 2-3 parts of dibasic lead phosphite; and 25-45 parts of EVA. The product can tolerate a high temperature of 150-160DEG C and a low temperature of -30DEG C, has tensile strength of 10-20MPa, tensile elongation of 400-600%, and knot strength of 1.5-2MPa. Being light-fast and wear resistant, the product can be widely produced and be used for replacing existing materials continuously.

A process related to sodium chemicals production, including the processing of bicarbonate containing solutions obtained by solution mining of trona, nahcolite or wegscheiderite reserves and the lake waters containing bicarbonates, includes the steps of purification, evaporation-decarbonation, crystallization, centrifuging, and drying.

The invention discloses an electro-conductive glass base plate cleaning agent, which is formed by components with the following percentage by weight, baking soda 3-5%, sodium tripolyphosphate 3-5%, monoethanolamine 2-4%, isopropyl alcohol 5-10%, alkyl alcohol polyoxyethylene ether 0.2-0.4%, sodium dodecylbenzene sulfonate 0.1-0.5%, ethylene glycol monobutyl ether 2-5% and the rest is water. The process for preparation comprises the following steps: adding the above raw materials into an emulsion tank in turn, and then preparing the cleaning agent after mixing, homogenizing, cooling, exhausting and filtering. The electro-conductive glass base plate cleaning agent of the invention has low pH value, when in use, the electro-conductive glass base plate cleaning agent has microvesicle or has no bubbles, which has strong water solubility, the surface of glass has no residues and particulate matters after cleaning. The cleaning agent has excellent cleanness, nontoxic, nonirritant and easy biodegradation, which is easy to discharge and process discard solution. And the cleaning agent has the advantages of simple process for preparation, high yield, only little deposition and residue, low power consumption, convenient process and operation, easy automation, no environmental contamination and high economic benefit.

Carboxy silicone latex emulsion is produced by: reacting the mixture of the ester group modified silicone oil, small molecular oxosilance, emulsifier, accelerating agent-dodecyl benzene sulflnic acid and water at 70-95deg.C for 5-15 hours, neutralizing by adding the sodium acid carbonate after the reactor is cooled. Its composition comprises (wt%): the use level of the ester group modified silicone oil and small molecular oxosilance is controlled by the termination product that the chain joint of organic silicon which contains carboxy has the 0.5-30% of all chain joint of organic silicon, 0.1-10% of the emolsifier, and 3-30% of the accelerating agent -dodecyl benzene sulflnic acid. It features: hydrolyzing of the ester group and polymerizing of oxosilance generate at the same time. Through the adjustment of the use level of dodecyl benzene sulflnic acid and non-ionic emolsifier, the grain size of the carboxy silicone oil latex emulsion can be modified, even the micro-latex emulsion will generate.

The invention discloses a method for preparing sodium carbonate by supplementing CO2 to flue gas. The method comprises the following steps: carrying out de-dusting, desulfurizing and cooling on CO2-containing flue gas, increasing the pressure to be 0.05-0.35 MPa, directly filling the flue gas into the middle and the upper part of a sodium carbonate preparation carbonizing tower, producing a carbonation reaction, enabling a reaction product to continue to pass through the lower section of the carbonizing tower to finish the carbonation reaction with high-concentration CO2-containing gas to obtain sodium hydrogen carbonate, and calcining sodium hydrogen carbonate to obtain sodium carbonate. According to the method, during sodium carbonate production, the problem of CO2 deficiency is successfully solved, the equipment investment and the power consumption are greatly reduced, the CO2 emission is reduced, the utilization rate of sodium chloride is high, both the energy consumption and the cost are low, and the economic feasibility is high.

The invention relates to a composites foaming agent, which comprises inorganic foaming agent as bicarbonate and molecule screen, while the amount of molecule screen is 0.5-50 deals when the bicarbonate is 100 deals, wherein the bicarbonate can use baking soda, potassium acid carbonate, or ammonium acid carbonate or the mixture of them; and the preparation comprises: selecting the bicarbonate; breaking with machine or airflow; then mixing the inorganic foaming agent with molecule screen in the mixer; the invention has the advantages that: 1, it has better flow property and disperse property; it can effectively increase the foaming time and the contract rate of product; 3, it can foam the macromolecule polymer that sensitive to water; 4, the added macromolecule screen will not affect the property of macromolecule polymer.

A sodium-based dechlorinating agent g is added to a flue gas G6; hydrogen chloride contained in this flue gas is removed as residue of dechlorination; the thus removed residue of dechlorination is dissolved by adding water i; water-insoluble constituents k are separated from the resulting aqueous solution j; and after adjusting pH of the aqueous solution l remaining after separation of the water-insoluble constituents k, mercury, dioxin and the like are removed and discharged. The sodium-based dechlorinating agent g is mixed with a hydrophilic anti-caking agent, with an angle of repose of 40.degree. or more, a dispersibility of less than 50, and a floodability index value of less than 90. A mean particle diameter of sodium hydrogencarbonate is set within a range of from 2 .mu.m to 30 .mu.m. The hydrophilic anti-caking agent comprises silica, and is contained in an amount of 0.1 mass % or more in the sodium-based dechlorinating agent. Further, a mean particle diameter of the hydrophilic anti-caking agent is set within a range of from 0.001 .mu.m to 1 .mu.m. This permits inhibition of occurrence of a pressure drop and leakage in the filter cloth of the dust collector.

The invention discloses a preparation method for high-purity esomeprazole sodium. The preparation method comprises the steps of: including and splitting esomeprazole sodium and D-(-)-diethyl tartrate, titanium iso-propylate, triethylamine and L-(+)-mandelic acid in the presence of a proper amount of water, and separating to obtain an inclusion complex; dissolving the inclusion complex with ethyl acetate, washing inclusion complex with sodium carbonate water solution, carrying out ammonia hydroxide eluting on an ethyl acetate layer, slowly regulating the pH value to 6-7 with glacial acetic acid, then extracting with dichloromethane, and concentrating to obtain crude esomeprazole free alkali product; carrying out silica gel adsorption and elution on the crude product to obtain a pure esomeprazole free alkali product; and enabling the pure product and the methanol-ethanol-acetonitrile solution of sodium hydroxide to form salt, and then crystallizing with isopropyl ether to obtain the high-purity esomeprazole sodium. According to the preparation method, the difficulties that when inclusion and splitting are carried out, the titanium complex suspension body are difficult to split and the ammonia complex of titanium is difficult to remove can be solved, the industrialization production can be realized, the industrialized production cost is low, the product purity is high, the yield is high, and no harmful gas is generated.

The present invention relates to a new composition comprising 4,4′-oxybis(benzenesulfonylhydrazide) (OBSH) and sodium hydrogen carbonate (SBC), a process for the manufacturing thereof, and its use as blowing agent for the manufacturing of expanded thermoplastic materials and rubber compounds.

The invention discloses an antibacterial PVC wood plastic plate. The antibacterial PVC wood plastic plate is prepared from, by weight, 100 parts of PVC-1300, 20-30 parts of PVC-1000, 10-20 parts of C 9 petroleum resin, 40-50 parts of modified nano calcium carbonate, 6-8 parts of corn straw powder, 0.5-1 part of AC foaming agents, 0.3-0.6 part of sodium bicarbonate, 1-3 parts of calcium and zinc stabilizers, 2-3 parts of silane coupling agents KH550, 2-3 parts of ACR, 0.2-0.5 part of microcrystalline wax, 0.2-0.5 part of stearic acid, 3-4 parts of PVC foaming regulators ZB-530, 4-5 parts of molybdenum oxide, 0.5-1.0 part of ammonium polyphosphate, 1-1.5 parts of zinc borate, 0.2-0.4 part of nanometer titanium dioxide and 3-4 parts of polyhexamethyleneguanidine phosphate. Extrusion shaping is performed through a conventional extruding machine. The PVC plate has good antibacterial performance, meanwhile has good impact resistance and tensile strength and has the advantages of being resistant to chemical corrosion and low in cost.

The invention relates to a method for preparing medicinal sterile sodium bicarbonate raw powder, which comprises the following steps: (1) subjecting industrial sodium carbonate serving as a raw material to purification, dissolution in water, decarburization and membrane filtration; (2) introducing industrial carbon dioxide gas subjected to membrane treatment into solution of sterile sodium bicarbonate to carry out acidification, and controlling parameters such as flow rate, reaction time, terminal pH value and stirring speed; (3) adding ethanol liquid subjected to membrane treatment into solution in which reaction is finished to allow sodium bicarbonate crystals to precipitate gradually, adjusting stirring speed, and controlling crystallization time to allow the crystallization to be completed fully; and (4) filtering the solution by a crystal filter to obtain the product, and drying the product by using a vibratory drying machine to obtain a finished product that meets medicinal standards.

The invention relates to a food fresh-keeping agent, in particular to a food fresh-keeping agent with the function of oxygen absorption. The food fresh-keeping agent is prepared from the following raw materials: 0.5-2 parts by weight of L-sodium ascorbate, 0.5-2 parts by weight of sodium hydrogen carbonate, 0.5-1 part by weight of zeolite, 1-10 parts by weight of ferrous sulfate (containing 7 kinds of crystal water), 1-3 parts by weight of sodium chloride (containing 2 kinds of crystal water) and 1-3 parts by weight of activated carbon. The food fresh-keeping agent has the advantages of scientific formula and simple preparation process and is suitable for keeping the fresh of breads, sausages, cakes, tea leaves, marine products, traditional Chinese medicine and the like. The food fresh-keeping agent is not directly doped in foods, is put in a food container together with a packing material, and can inhibit oxygen below 0.1% so as to inhibit the growth of bacteria without changing the color and the flavor of the foods. The food fresh-keeping agent is a safer food fresh-keeping agent.

The invention discloses a carbonization cleaning process of a carbonizer for producing heavy soda ash, particularly aiming at a carbonization cleaning process of an outside cool tower for producing heavy soda ash, characterized by: using marshalling operation, using one tower for cleaning, using the other three towers for producing soda, and washing the towers with an ammonia mother liquor II by turns; sending the ammonia mother liquor II in a cleaning tower, letting a mixed gas of carbon dioxide and nitrogen in the cleaning tower, dissolving sodium bicarbonate and ammonium bicarbonate and other scabs in the tower with the ammonia mother liquor II, and simultaneously reacting ammonia in the ammonia mother liquor II with carbon dioxide to achieve the purposes of carbon dioxide absorption and then precarbonization. According to the invention, because of no need of letting the hot ammonia mother liquor II be subject to cooling and then enter in the soda production tower, the carbonization conversion degree is effectively raised, and the carbonization cleaning process disclosed herein is beneficial for cleaning the carbonizer.

The invention discloses a method for quantifying a microalgae using an inorganic carbon approach. The prior art can not quantify microalgae using an inorganic carbon approach. The solving method comprises the following steps of: respectively adding two sodium bicarbonate of which the delta 13C value difference values are larger than 0.8% as an isotope label 1 and an isotope label 2 to cultivate microalgae to be tested in a nutrient solution; and respectively cultivating the microalgae to be tested for 4 days under the above condition and the cultivating condition of 16mM of sodium bicarbonate and 10mM of MAZ, testing the delta 13C values, computing the portion fB of the used and added inorganic carbon source under various microalgae cultivating conditions and the delta 13C value delta a of a microalgae body when a carbon dioxide approach in the atmosphere is completely used, and obtaining the portions of the two approaches in which the microalgae uses the inorganic carbon according to the obtained data. The method can quickly quantify the microalgae using inorganic carbon approach, and can develop a cultivating test under the complete same experiment condition to obtain the reliable data of the portion of the microalgae using inorganic carbon approach, which can not be achieved in the prior art.

An hydrogel comprising chitosan and two weak bases having different pKb values. In some embodiments, one of the weak bases if sodium hydrogen carbonate (SHC). Also, use of the hydrogel in medical and cosmetic treatments.

The invention discloses a comprehensive utilization method of waste liquor in the production of basic cupric carbonate and relates to the field of treatment methods of industrial wastewater. The invention aims at providing a comprehensive utilization method of waste liquor in the production of basic cupric carbonate, and in particular relates to a method for reusing sodium bicarbonate in the waste liquor. The waste liquor in the production of the basic cupric carbonate is the waste liquor generated after the basic cupric carbonate is produced by a reaction between an acidic copper chloride solution or an acidic copper sulfate solution and a sodium carbonate solution. The comprehensive utilization method of the waste liquor in the production of the basic cupric carbonate mainly comprises the following steps: adding a little distilled water into a reaction kettle as a base solution; when the reaction temperature rises to 35-90 DEG C, starting a stirring device, and adding the waste liquor containing sulfate radicals or chlorine and the acidic copper solution into the reaction kettle for reaction, wherein the pH value during the addition of the solutions is controlled to be 3-6; and filtering, washing, drying and sieving reaction products to obtain the basic copper salt. The method disclosed by the invention is simple to operate, easy to control reaction conditions, and widely applicable to the recycling and reusing of the waste liquor in the production of basic cupric carbonate.

The invention discloses a refractory material with heat insulation and heat preservation as well as a preparation method thereof. The refractory material with heat insulation and heat preservation is prepared by the following raw materials: aluminum oxide, silicon oxide, magnesium carbonate, calcium oxide, titanium oxide, zirconium oxide, zinc oxide, water, sodium bicarbonate, a pore forming agent and the like. The pore forming agent comprises sucrose, carbon powder, aluminium powder, polyethylene microspheres, diatomite, copper sulfate pentahydrate, potassium dodecylbenzenesulphonate, water and the like. The refractory material with heat insulation and heat preservation is prepared by the following steps: pretreatment of raw materials, mixing of raw materials, steam curing, cutting and sintering, aftertreatment, and the like. The light type refractory material has the advantages of lower volume density and higher porosity, high available temperature and high compression strength, lower thermal conductivity, and good heat insulation effects.

The invention discloses a preparation method of a lithium battery LiNi0.5Mn1.5O4 positive electrode material with a hollow structure. The method comprises the following steps: preparing MnCO3 precursor micro-spheres with high monodispersity and uniform sizes from soluble manganese salt and sodium bicarbonate serving as raw materials at the room temperature by taking water and a small amount of ethanol as reaction solvents; reacting a precursor surface layer with Li2CO3 and nickel nitrate according to a Coriolis-Tyndall effect by taking the MnCO3 precursor obtained in the precious step as a spherical template as well as an Mn source to generate the lithium battery LiNi0.5Mn1.5O4 positive electrode material with a remarkable simple structure. The method has the characteristics of simple process, cheap raw materials, room-temperature preparation of a template material, low cost, controllability of the microstructure and size of the positive electrode material, and the like.