47 results about "Ethyl tert-butyl ether" patented technology

A process for preparing low-water ethanol from at least two streams of relatively water-rich ethanol that have a different water content by dewatering at membranes. The low-water ethanol can be used to prepare ethyl tert-butyl ether (ETBE).

The invention relates to a gasoline quality improver applicable to national IV-level gasoline. The gasoline quality improver comprises the following compounds in parts by weight: 22-25 parts of polyisobutene amine, 15-18 parts of alkylphenol, 7-10 parts of polyether amine, 10-13 parts of nitromethane, 10-15 parts of dimethyl carbonate, 5-10 parts of ethyl tert-butyl ether and 18-22 parts of solvent soil. Compared with the prior art, the gasoline quality improver applicable to national IV-level gasoline is capable of reducing fuel consumption, prolonging the service life of an engine and reducing emission of gaseous pollutants; meanwhile, the gasoline quality improver has the important practical value.

The invention provides a process method for preparing ethyl tert-butyl ether. The process method comprises the following steps of: taking isobutene and ethanol as raw materials, and using a heteropoly acid / titanium-based complex oxide catalyst to prepare the ethyl tert-butyl ether, wherein the heteropoly acid / titanium-based complex oxide catalyst takes a complex oxide as a carrier and takes heteropoly acid as an active component, the complex oxide is one or more of titanium-based complex oxides in TiO2-SiO2 or TiO2-ZrO2, and the heteropoly acid is one or more of phosphotungstic acid, silicotungstic acid, arsenotungstic acid, germanotungtic acid, phosphomolybdic acid, silicomolybdic acid, arsenomolybdic acid and germanomolybdic acid. According to the process method provided by the invention, the catalyst adopting the titanium-based complex oxide to load the heteropoly acid is adopted, so that the shortcomings of inactivation of the catalyst and reduced conversion rate, which are caused by easiness in damaging the Keggin structure of the heteropoly acid of the loaded heteropoly acid catalyst, easiness in loss of acid amount and difficulty in separation, can be overcome.

The invention relates to a high-activity compound modified additive of methanol gasoline for an automobile. The additive is prepared from the following components in percentage by weight: 12% of ethanol as a solvent, 0.1% of 2-methyl-1-butanol as an antidetonant, 0.5% of sulfurized calcium alkyl as an adjustor, 1.5% of triethanolamine as an engine carbon deposition preventer and an anticorrosive agent, 2.5% of methylal as a combustion improver, 59% of normal butanol as an active mutual solvent, 0.1% of 3-methyl-1-butanol as a synthetic solvent, 10% of 2-methyl-1-propanol as a synthetic solvent, 10% of normal propyl alcohol as a synthetic solvent, 0.1% of ethyl tert butyl ether as an antidetonant, 2% of 1-phenyl-5-mercapto-tetrazole as a corrosion inhibitor, 1% of 2-mercapto benzimidazole as a corrosion inhibitor, 20.6% of nano TiO as a protective coating and 0.6% of 2, 6-ditert-butyl p-cresol as an antioxidant. The additive can be widely applied to additives of methanol and methanol motor gasoline.