12 results about "Ethylidenediphosphonic acid" patented technology

The invention belongs to the technical field of stripping agents, and particularly relates to a slime stripping agent and a preparation method and application thereof. The slime stripping agent disclosed by the invention is prepared from dodecyl dimethyl benzyl amine bromide, dichlorophenol, isothiazolinone, polyoxyethylene alkylolamide, hydroxyethylidene diphosphonic acid, dimethylformamide and sodium dodecyl benzene sulfonate. Through the combined action of the specific components, the slime stripping agent has good stripping capacity and can rapidly permeate and disintegrate slime, dirt and biological membranes attached to the surface of equipment, the cleanliness and operation efficiency of the equipment are recovered, and equipment blockage and performance reduction caused by slime accumulation are effectively avoided; meanwhile, the high killing effect on sulfate reducing bacteria and nitrifying bacteria is achieved.

The invention belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil extraction of oil and gas fields and a preparation method thereof. The desulfurizing agent for oil extraction of the oil and gas field is prepared from the following raw materials: N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture, ammonium molybdate, lysine sodium, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate and the balance of water. According to the desulfurizing agent for oil extraction of the oil-gas field, water is used as a solvent, N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture and ammonium molybdate in raw materials are used as main desulfurizing components to remove organic sulfur and inorganic sulfur, and lysine sodium, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added, so that the desulfurizing agent for oil extraction of the oil-gas field is obtained. Due to the synergistic effect of the raw materials, the efficient removal of inorganic sulfur and organic sulfur in oil extraction of an oil and gas field is realized.

The application belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil and gas field oil production and a preparation method thereof. The desulfurizer for oil and gas field oil production comprises the following raw materials: N-octadecyl-1,3-propanediamine, an ionic liquid-organic copper mixture, ammonium molybdate, sodium lysine, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate, and water as the balance. The desulfurizer for oil and gas field oil production uses water as a solvent, and N-octadecyl-1,3-propanediamine, the ionic liquid-organic copper mixture and ammonium molybdate in the raw materials as main desulfurization components to remove inorganic sulfur and organic sulfur, and sodium lysine, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added to enhance the stability and permeability of the system, so that the raw materials synergize to achieve efficient removal of inorganic sulfur and organic sulfur in oil and gas field oil production.

The invention discloses an environment-friendly silicon material surface cleaning reagent and a preparation method thereof, the environment-friendly silicon material surface cleaning reagent comprises hydrofluoric acid, citric acid, EDTA tetrasodium, 1-hydroxyethylidene-1, 1-diphosphonic acid and pure water, and the environment-friendly silicon material surface cleaning reagent is characterized in that the citric acid accounts for 20-25%, the hydrofluoric acid accounts for 4-5%, the EDTA tetrasodium accounts for 0.5-1%, the 1-hydroxyethylidene-1, 1-diphosphonic acid accounts for 0.5-1%, and the pure water accounts for 0.5-1%. The proportion of the hydroxyethylidene diphosphonic acid is 0.5%-1%, the proportion of the pure water is 70%-73%, the chemical formula of the hydrofluoric acid is HF, the chemical formula of the citric acid is C6H8O7, the chemical formula of the EDTA tetrasodium is C10H12N2Na4O8, the chemical formula of the hydroxyethylidene diphosphonic acid is C2H8O7P2, and the chemical formula of the pure water is H2O. According to the environment-friendly silicon material surface cleaning reagent and the preparation method thereof, citric acid is used as a main material, HF and the chelating agent are matched, metal pollutants and surface oxides in a silicon material are removed, meanwhile, the reagent does not contain substances which chemically react with the silicon material, raw material loss is effectively avoided, and the raw material utilization rate is increased.

The invention belongs to the technical field of oil and gas field produced water treatment, and particularly relates to a scale inhibitor and a scale inhibitor preparation method. The scale inhibitor comprises amino trimethylphosphonic acid, hydroxyethylidene diphosphonic acid, ethylenediamine tetraacetic acid, modified sulfonate and potassium hydroxide. The scale inhibitor has a good scale inhibition effect, greatly prolongs the cleaning period of equipment, ensures the long-term stable operation of the equipment, and plays an important role in improving the operation efficiency and reducing the maintenance cost.

The invention provides a multifunctional additive modified perovskite thin film and a preparation method and application thereof, and belongs to the technical field of perovskite solar cells. The preparation method of the perovskite thin film comprises the following steps: adding tetrasodium hydroxyethylidene-1, 1-diphosphonate into a perovskite precursor solution to obtain a mixed precursor solution; and preparing the perovskite thin film from the mixed precursor solution by using an anti-solvent method. According to the invention, the tetrasodium hydroxyethylidene-1, 1-diphosphonate is used as an additive to regulate and control the perovskite precursor solution, so that the grain boundary defect of perovskite is passivated, the crystallinity of crystals is improved, and the perovskite solar cell shows excellent photoelectric conversion efficiency and light stability. Meanwhile, the tetrasodium hydroxyethylidene diphosphonate can form a complex with lead ions, so that lead leakage is reduced.

The present invention provides a flame-retardant and heat-insulating fabric for fire-fighting clothing and a preparation process thereof, which belongs to the technical field of fire-fighting fabrics; the preparation process includes the following steps: preparing coated modified ammonium polyphosphate; modifying expanded perlite; preparing a flame-retardant outer layer fabric; preparing a heat-insulating core layer fabric; preparing an antibacterial inner layer fabric; and bonding. The flame-retardant and heat-insulating fabric for fire-fighting clothing of the present invention includes a flame-retardant outer layer fabric, a heat-insulating core layer fabric, and an antibacterial inner layer fabric, wherein the ammonium polyphosphate is first dispersed in deionized water, and polyethyleneimine is added under acidic conditions, and the amino groups on the polyethyleneimine are first subjected to an ion exchange reaction with the ammonium ions of the ammonium polyphosphate to preliminarily coat the ammonium polyphosphate, and then a hydroxyethylene diphosphonic acid solution is added to carry out a salt-forming reaction to prepare a coated modified ammonium polyphosphate with a core-shell structure. After the coated modified ammonium polyphosphate is mixed with polyester powder and granulated to prepare the flame-retardant outer layer fabric, the flame retardant properties of the flame-retardant outer layer fabric can be effectively improved.

This invention discloses a method for preparing Ga / Se dual-ion co-modified attapulgite and a corrosion-inhibiting multifunctional silk fibroin-based hydrogel coating. The preparation process is as follows: Attapulgite is activated and surface-modified with a hydrochloric acid solution of a certain concentration; gallium nitrate solution is added and the temperature is controlled; the reaction is carried out for a period of time to obtain Ga / Se dual-ion modified attapulgite; then, it is added to a silk fibroin aqueous solution of a certain mass fraction; subsequently, (1-hydroxyethylidene) bisphosphonic acid and glycine are added, mixed evenly, and coated onto a pretreated substrate, then dried at 37°C to form a film. Compared with the prior art, the hydrogel coating prepared by this invention has good corrosion inhibition, antibacterial, and osteogenic properties, and can be widely used in the surface protection of biomedical magnesium alloys and to impart multifunctionality to them.

The application provides a floor oil sludge microbial treatment inducer and application thereof. The floor oil sludge microbial treatment inducer comprises a modified pretreatment agent and an exogenous microbial enzyme activity promoter; the modified pretreatment agent comprises sodium carboxymethyl cellulose, sodium carboxyethylidene diphosphonate, sodium humate, kaolinite and ethanol; and the exogenous microbial enzyme activity promoter comprises a KH2PO4-K2HPO4 buffer, yeast powder, lactose, linseed oil and petroleum ether. The floor oil sludge microbial treatment inducer can solve the problem of low efficiency of microbial treatment of floor oil sludge soil in the prior art and is suitable for the field of oil pollution treatment.

The invention discloses a novel compound agent and a preparation method thereof, and relates to the technical field of potassium ore flotation separation, according to the method, octadecylamine, sodium oleate and 1-hydroxyethylidene diphosphonate are mixed according to the proportion of 10-13: 1-2: 0.5-1 to prepare the novel compound agent, through multi-component functional coupling, the prepared agent can be applied to flotation of potassium ore under the low-temperature condition, and the potassium ore flotation efficiency is improved. The low-temperature wetting barrier is effectively overcome, the adsorption separation performance on potassium ions is improved, the flotation efficiency of sylvite at low temperature is improved, the flotation effect is better than that of a traditional collecting agent octadecylamine, and the dosage is small compared with that of an octadecylamine compound agent.

A method for preventing corrosion of a metal member in which cooling water and steam are alternately brought into contact with each other, said method being characterized in that a phosphorus compound and / or a zinc compound are added to the cooling water, and an anti-corrosion film-forming substance is added to the steam. The phosphorus compound is at least one of hexametaphosphoric acid, triphosphoric acid, orthophosphoric acid, phosphono butane tricarboxylic acid, HEDP (1-hydroxyethylidene-1, 1-diphosphonic acid) and amino trimethylphosphonic acid.

The application discloses an inhibitor for relieving cement false setting and a preparation method and application thereof. The inhibitor comprises the following components in parts by weight: a retarding component 5-10 parts, a surface active component 0.5-3 parts and a metal impurity component 87-94 parts. The retarding component is selected from one or more than one of sodium tripolyphosphate, sodium hexametaphosphate, hydroxyethylidene diphosphonic acid, aminotri (methyl) phosphonic acid, ethylenediamine tetramethylene phosphonic acid, diethylene triamine penta (methyl) phosphonic acid penta sodium and 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid. The metal impurity component is a monovalent or divalent metal sulfate. The inhibitor can effectively relieve or solve the problem of poor flow performance and sharp viscosity increase of freshly mixed concrete caused by cement false setting, keep the smoothness of concrete working performance and ensure the easy construction of concrete.