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526 results about "Dodecyldimethylbenzylammonium chloride" patented technology

Environment-friendly pickling inhibitor and application thereof in pickling of carbon steel

The invention discloses an environment-friendly pickling inhibitor and an application of the environment-friendly pickling inhibitor in the pickling of carbon steel, to effectively solve the problem of the pickling of the carbon steel. The chemical components of the environment-friendly pickling inhibitor include water and any two or three of urotropin, cation surfactant, dodecyl dimethylbenzyl ammonium chloride, octadecyl dimethylbenzyl ammonium chloride, dodecyl dimethylbenzyl ammonium bromide, myristyl dimethyl ammonium chlorid; the method for application of the environment-friendly pickling inhibitor to the pickling of the carbon steel comprises the steps: adding the pickling inhibitor into a hydrochloric acid solution or a sulphuric acid solution with a concentration of 1.0-10mol/L according to the ratio of 1L of acid solution to 0.05g-2g of the pickling inhibitor; immersing the carbon steel to be washed or a carbon steel product in the acid liquid added with the pickling inhibitor; and controlling the temperature to be 20-70 DEG C and immersing time to be 5-20min. The pickling inhibitor provided by the invention is a pickling inhibitor friendly to the environment. The pickling inhibitor is non-toxic and harmless, is environment friendly, does not cause environmental problems after application, and conforms to the development trend of the green corrosion inhibitors.
Owner:UNIV OF SCI & TECH LIAONING

Rapid judgment for corrosion of sodium bicarbonate water type oil well and corrosion inhibitor

The invention relates to rapid judgment for the corrosion of a sodium bicarbonate water type oil well, which is applied to the corrosion treatment of a pit shaft of the oil well. A production liquid is of a sodium bicarbonate water type. When the mole ratio of Ca to HCO3- is between 0 and 1 and less than 0.6, the corrosion which is local corrosion and scale formation coexist; along with the increase of the mole ratio of the Ca to the HCO3-, the scale formation of the pit shaft is relieved, but the corrosion becomes serious; and when the mole ratio of the Ca to the HCO3- is greater than 0.6, the pit shaft of the oil well is mainly corroded. The corrosion condition of a sodium bicarbonate water type medium is fast known through the mole ratio of the Ca to the HCO3-. A corrosion inhibitor for the sodium bicarbonate water type medium is made from the following components in percentage by weight: 20 to 35 percent of carboxylate sodium imida, 20 to 35 percent of water-soluble rosinyl imidazoline, 5 to 10 percent of dodecyldimethylbenzylammonium chloride, 0 to 5 percent of aminotri-methylene phosphonic acid, 0 to 5 percent of hydroxyl ethidene diphosphonic acid, 5 to 10 percent of methanol, 2 to 5 percent of dispersant and the balanced of water. The rapid judgment and the corrosion inhibitor can improve the efficiency of corrosion inhibition.
Owner:PETROCHINA CO LTD

Surfactant for sludge dewatering and sludge dewatering method

The invention relates to surface active agent used for filthy mud dehydration. The addition of dodecyl benzyl dimethyl ammonium chloride is 1.42 to 2.07 percent by weight of the solid content of the filthy mud. The surface active agent has the advantages of low specific impedance value of the filthy mud after the surface active agent is added and high solid content ratio of filter mass after dehydration. In a method for filthy mud dehydration with the surface active agent, pressure filtration dehydration is carried out with a plate and frame filter press, the filthy mud injection pressure is progressively increased, the sewage and filthy mud to be regulated is injected into a filter press at certain injection pressure, and when the filter press is full, filtrate discharging flux is V1; when the filtrate discharging flux is lower than one half of V1, the filthy mud injection pressure is increased to a higher level, and the filtrate discharging flux is increased to V2; when the filtrate discharging flux is lower than one half of V2, the filthy mud injection pressure is increased to a higher level again, so that the filthy mud injection pressure is progressively increased to the preset pressure in this way, then feeding is stopped and the pressure is maintained, and finally the membrane extrusion is carried out. The method has the advantages of uniform increase of the density of mud cakes and small filtration resistance in filtration.
Owner:广州中滔绿由环保科技有限公司

Selenium-enriched efficient sustained release compound fertilizer

The invention relates to the field of compound fertilizers and particularly relates to a selenium-enriched efficient sustained release compound fertilizer which is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000-mesh diatomite, 20-25 parts of urea, 10-12 parts of ammonium dihydrogen phosphate, 2-4 parts of zinc sulfate, 6-8 parts of tertiary calcium phosphate, 10-12 parts of potassium chloride, 18-22 parts of dried pig manure, 15-17 parts of soybean meals, 10-12 parts of soybean straw powder, 10-12 parts of detoxified tung seed cake, 4-6 parts of Japanese banana leaf pulp, 3-5 parts of water hyacinth powder, 10-12 parts of hydroxymethyl cellulose, 4-5 parts of polyacrylamide, 0.1-0.2 part of ammonium bicarbonate, 0.2-0.3 part of camphor, 2-4 parts of selenium-enriched yeast, 1-2 parts of alkyldimethyl benzylammonium chloride, 2-3 parts of nanocarbon, 2-4 parts of zinc gluconate, 6-8 parts of table vinegar and 4-5 parts of additive. The compound fertilizer is prepared from easily available raw materials and is rich in nutrients; the nutrients which are doubly coated by using diatomite and a coating agent cannot be easily lost, thus the fertilizer effect lasts very long time; and the raw materials contain abundant selenium element after being fermented by the selenium-riched yeast, thus the selenium-enriched efficient sustained release compound fertilizer is capable of increasing the content of the selenium in crop fruits, increasing the economic value of vegetables and fruits, and remarkably improving the benefit.
Owner:安徽省巨星肥业有限公司

Anti-carbon dioxide corrosion inhibitor and preparation method thereof

The invention discloses a carbon dioxide corrosion inhibitor which consists of the following components in percentage by mass: 70-80% of clear water, 4-6% of dodecyl dimethyl benzyl ammonium chloride, 8-12% of imidazoline, 4-6% of alkyne-oxy methylamine and 4-6% of dodecyl trimethyl ammonium chloride. The preparation comprises the following steps: weighing the components according to the mass proportion and placing separately for later use; adding 70-80% of the clear water by mass into a mixer and starting stirring for 3-5min; adding the dodecyl dimethyl benzyl ammonium chloride into the mixer and starting stirring for 12-18min; adding the dodecyl trimethyl ammonium chloride into the mixer and starting stirring for 12-18min; adding the imidazoline into the mixer and starting stirring for 12-18min; and adding the alkyne-oxy methylamine into the mixer and the rest clear water, and starting stirring for at least 20min until the drug is uniformly mixed before stopping the stirring. The carbon dioxide corrosion inhibitor disclosed by the invention realizes a good corrosion inhibition effect on the sewage with high content of carbon dioxide in an oilfield, can effectively control the corrosion of sewage at low concentration and effectively saves the drug cost as well as the repair and maintenance cost of the oilfield water treatment equipment; and moreover, the preparation method is simple and fast, the production cost is low and the efficiency is high.
Owner:XIAN HUANUO ENVIRONMENTAL PROTECTION CO LTD
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