6 results about "Diethanolamine" patented technology

The invention discloses a hydrogen peroxide decomposition inhibitor and a preparation method thereof. The hydrogen peroxide decomposition inhibitor is prepared from the following production materialsaccording to parts: 4 to 7 parts of sodium stannate, 3 to 9 parts of sodium pyrophosphate, 3.5 to 6 parts of sodium sulfide, 0.75 to 1.5 parts of zinc sulfate, 2.5 to 5 parts of sodium cyanide, 7 to 14 parts of potassium dichromate, 2 to 4 parts of potassium cyanide, 0.8 to 2 parts of carboxymethyl cellulose, 3 to 6 parts of diethanolamine, 4 to 8 parts of sodium metasilicate, 0.2 to 0.4 part of sodium oxalate, 0.15 to 0.3 part of methyl salicylate, 0.3 to 0.5 part of potassium benzoate, 0.4 to 0.6 part of sodium thioglycolate and 15 to 30 parts of modified ethyl ether. The hydrogen peroxide decomposition inhibitor provided by the invention can be used for effectively inhibiting decomposition reaction of hydrogen peroxide under a room-temperature or high-temperature condition; the raw material cost of the whole inhibitor is low; a processing method is simple and is worthy of being popularized.

The invention discloses a preparation method of a diesel microemulsifier, which comprises the following steps: reacting a formaldehyde solution with monoethanolamine to obtain a product A, reacting docosenoic acid, oleic acid and diethanolamine to obtain a product B, and uniformly mixing 20-40 wt% of product A, 50-70 wt% of product B, 1-10 wt% of rhamnoilpid, 1-10 wt% of sulfosuccinate and 1-5 wt% of monoisobutyl amine. The preparation method is simple, and overcomes the defects of high addition amount of the emulsified oil emulsifier, low product stability, nontransparent appearance, short storage time, high tendency to demulsification and stratification and the like. The diesel microemulsifier can be used for preparing microemulsified oil with the water content of less than 30%. The microemulsified diesel prepared by the microemulsifier can stably exist for more than 1 year at room temperature. The microemulsified oil slurry and residual oil can stably exist for more than half a year.

The invention discloses a rubber pipe of an automotive oil radiator. The rubber pipe comprises the following materials in parts by weight: 100 parts of perchloric ether rubber, 40-50 parts of fluororubber, 40-50 parts of ethylene propylene diene monomer, 5-10 parts of polypropylene, 2-5 parts of diethanolamine borate and 0.3-1 part of talcum powder. The rubber pipe of the automotive oil radiator disclosed by the invention still maintains stable flexibility and weather resistance at long-term high temperatures, and a high elastic property is maintained unchanged.

The invention discloses a graphene adsorbent for crude oil desulfurization. The graphene adsorbent for the crude oil desulfurization is prepared from the following raw materials in parts by weight: 2.4 to 3.2 parts of diethanolamine, 10 to 18 parts of graphene, 1.5 to 2.5 of bismuth oxide, 2 to 4 parts of iron oxide, 2.2 to 3.6 parts of alumina, 0.6 to 1.5 parts of sodium nitrite, 4 to 8 parts ofacetaldehyde, 46 to 63 parts of ethylene glycol, 1.8 to 5 parts of polyacrylamide, 5 to 10 parts of strong alkali solution, 1.6 to 3 parts of surfactant, 2 to 3 parts of phenol and 6.5 to 9 parts of radix isatidis. The graphene adsorbent for the crude oil desulfurization has wide raw material sources, the specific surface area of the graphene is improved by supporting inorganic oxide on the graphene, the graphene is modified by using a strong alkali, sodium nitrite and a surfactant to improve the surface activity of the graphene, and the adsorption to sulfides in crude oil is improved by combining the graphene adsorbent with other components.

A composition for removing mercaptan from a gas stream containing at least one acid gas in addition to a mercaptan, the composition comprising a physical and/or chemical solvent for H₂S and an inclusion compound for the mercaptan. A process of treating gas stream using the composition. The inclusion compound is selected from the group consisting of, cyclodextrin, cryptand, calixarene, cucurbituril. The chemical solvent may be monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA, diisopropylamine (DIPA), diglycolamine (DGA) and methyldiethanolamine (MDEA). Examples of useful physical solvents include cyclotetramethylene sulfone (sulfolane) and its derivatives, aliphatic acid amides, NMP (n-methylpyrrolidone), N-alkylated pyrrolidones and corresponding piperidone, methanol and mixtures of dialkethers of polyethylene glycols. The method copirses scrubbing preferably the natural gas with an aqueous solution comprising the above compounds followed by a stripping regeneration step.