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

The invention relates to a process for preparing ETBE from technical mixtures which comprise at least 1-butene, isobutene, n-butane and 2-butenes, by reacting the isobutene present, distillatively removing a fraction comprising 1-butene and isobutene and again reacting the isobutene present therein to give ETBE.

The invention relates to the field of gasoline additives, in particular to an environmentally-friendly energy-saving emission reduction gasoline additive and a preparation method thereof. The environmentally-friendly energy-saving emission reduction gasoline additive is prepared from the following ingredients in parts by weight: 4-9 parts of ethyl tert butyl ether, 2-5 parts of dimethyl carbonate,1-3 parts of 3-phenyl-1-(2-amino-3,4,5-triethoxy-phenyl)acrylketone, 2-6 parts of 3,4,5-trihydroxy benzene formamide, 3-9 parts of 1-(4-hydroxy phenyl)-5-sulfydryl-tetrazole, 1-5 parts of benzotriazole, 4-8 parts of ethyl acetate, 2-5 parts of triethanolamine, 11-15 parts of isopentyldiol and 14-30 parts of solvent.

The invention relates to the technical field of processing fuel oil, in particular to 98# vehicular gasoline and a preparation method thereof. The invention discloses the high-grade 98# vehicular gasoline prepared by adopting catalytic gasoline and additives such as ethyl tert-butyl ether (ETBE), dimethylbenzene, aromatic hydrocarbon, an octane number improver and the like, and the preparation method thereof. The octane number of the clear gasoline prepared by the method reaches the standard requirement of the 98# vehicular unleaded gasoline, and part of indexes is superior to the national standard requirement; and the product is safe and environmental-friendly, fully utilizes the catalytic gasoline, improves the industrial added value of the catalytic gasoline product, and has simple process and convenient and feasible operation.

The invention discloses a method for coproduction of 1,3-butadiene and ethyl tert butyl ether from methanol to olefin (DMTO) byproduct coal-based mixing C4. The method sequentially comprises the following three working sections: coal-based mixing C4 pretreatment and etherification working section, butene oxidative dehydrogenation working section and butadiene refining working section, wherein the coal-based mixing C4 pretreatment working section sequentially comprises the following steps: (1) removing a C5 component; (2) implementing hydroisomerization; and (3) condensing isobutene; and in the etherification step, isobutene obtained from the top of an isobutene condensation tower is pumped into an etherification tower together with ethanol for an etherification reaction. Furthermore, the invention discloses a combination device for coproduction of 1,3-butadiene and ethyl tert butyl ether from methanol to olefin (DMTO) byproduct coal-based mixing C4. The method can be used for realizing the effective and comprehensive utilization of 1-butene, isobutene, 2-butene and 1,3-butadiene in the coal-based mixing C4 as well as few C5 component, so that the comprehensive utilization rate is improved, and the method is a new trend of comprehensive utilization of the coal-based mixing C4.

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/aluminum-based complex oxide catalyst, wherein the heteropoly acid/aluminum-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 aluminum-based complex oxides in MgO-Al2O3, TiO2-Al2O3 and ZrO2-Al2O3, and the heteropoly acid is one or more of phosphotungstic acid, silicotungstic acid, arsenotungstic acid, germanotungtic acid, phosphomolybdic acid, silicomolybdic acid, arsenomolybdic acid, germanomolybdic acid and the like. According to the process method provided by the invention, the catalyst adopting the aluminum-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 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.

The invention relates to the technical field of fuels, and particularly relates to low-emission vehicle fuel. The low-emission vehicle fuel is prepared though the following raw materials in parts by weight: 25-50 parts of monohydric alcohol, 20-35 parts of normal octane, 10-20 parts of ethyl levulinate, 2-8 parts of 1-trityl-1H-imidazole, 1-3 parts of a clearing agent, and 0.5-2.3 parts of an combustion improver, wherein the monohydric alcohol is one or two of methyl alcohol, amyl alcohol and isobutyl alcohol; the clearing agent is the mixture of 2-methylimidazole and butyl cellosolve; the combustion improver is the mixture of dimethyl carbonate and ethyl tert butyl ether. The low-emission vehicle fuel is high in exhaust gas emission and can directly replace gasoline on the premise that an engine remains and low exhaust gas emission is ensured.

The invention provides a strong acid type cationic resin catalyst, and catalytic preparation and application of ethyl tert-butyl ether of the strong acid type cationic resin catalyst. The strong acidtype cationic resin catalyst is obtained by performing suspension copolymerization on tert-butyl styrene and a divinyl benzene monomer under the action of a pore-foaming agent and a surfactant comprising sorbitan ester, alkylphenol ethoxylates, paralkyl sodium sulfonate and sodium hexadecyl benzene sulfonate to obtain a copolymer white ball and then performing pore purification and sulfonation. The invention further provides the catalytic preparation and application of ethyl tert-butyl ether of the strong acid type cationic resin catalyst. According to the technical scheme, a preparation method of the catalyst is safe, simple and convenient; practice also proves that the catalyst is applied to the ethyl ether tert-butyl ether catalytic etherification process to show higher activity and stability, the molar ratio of alcohol to alkene is reduced, the iso-butene conversion rate is 95 percent or higher, and the selectivity of the ethyl ether tert-butyl ether is higher than 99 percent.

The invention discloses a synthetic method and device of ethyl tert butyl ether. The ethyl tert butyl ether is prepared from isobutene, ethanol, tertiary butanol and ethanol in combination; the isobutene and the ethanol react in a first reaction system; the tertiary butanol and the ethanol react in a second reaction system; tertiary butanol generated in the first reaction system enters the second reaction system to be recycled; and isobutene generated in the second reaction system enters the first reaction system to be recycled as a reactant. The concentration of the ethanol is lower than that of enol which is directly added for preparing the ethyl tert butyl ether, so that the material adaptability is improved, and the material cost is reduced; the source of the isobutene is restricted by petroleum, and the amount of the tertiary butanol increases, so that the production of the ethyl tert butyl ether can be ensured, and the adaptability of the devices is enhanced; by-products generated by reaction can be recycled between the systems, so that the conversion ratio of the reactants is enhanced; and the tertiary butanol is a by-product from production of epoxypropane, and thus the reactant is easily available.

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 discloses a power additive used for an automobile, and a preparation method thereof. The power additive is prepared from the following ingredients: methyl alcohol, C12, xylene, ethyl tert butyl ether, an emulgator OP-10, n-octyl alcohol, paranitroaniline, imidazoline petroleum barium sulfonate, laurinol, propargyl alcohol and dioctyl phthalate. The additive is hydrogen-rich carbon-containing combustible liquid, the additive is added into gasoline at the volume fraction of 30-40%, the additive can partially replace the gasoline as fuel, the quality of the gasoline can be improved,the quality of the gasoline is improved, the cost of the gasoline is lowered, the octane value of the gasoline is improved, and dynamic performance is enhanced. The ingredients of the additive are abundant and are completely combustible, in addition, an ignition point is low, carbon deposition and series problems caused by carbon deposition can be avoided, the corrosion of the methyl alcohol forautomobile metal components can be prolonged, and the swelling function of the methyl alcohol for automobile rubber components is lowered. The additive is safe and environmentally friendly, tail gas emissions are reduced by 60% than the gasoline, and each index is superior to the index of common gasoline.

The invention belongs to the technical field of fuel, and particularly relates to a methanol fuel. The methanol fuel is prepared from, by weight, 80-100 parts of methanol, 10-30 parts of gasoline, 1-5 parts of 2-methylimidazole, 0.1-0.6 part of ethyl tert butyl ether, 0.02-0.08 part of dodecylbenzene sulfonic acid, 0.2-1.2 parts of 1-decanol, 0.02-0.08 part of 1-hydroxyethylidene-1,1-diphosphonic acid, 0.3-0.9 part of tributyl phosphate and 0.2-1.2 parts of antiknock agent. The methanol fuel is good in intersolubility and swelling property, good in corrosion resistance and high in calorific value and octane number, and remarkably reduces exhaust gas emission.

The invention relates to an improved multi-functional fuel oil additive. The improved multi-functional fuel oil additive is prepared from the following raw materials in parts by weight: 5-9 parts of lauroyl diethanolamide, 3-6 parts of carboxylic ester, 5-7 parts of polyether acetate, 4-8 parts of non-ionic surface active agent, 6-8 parts of petroleum solvent, 6-10 parts of glycerol monostearate, 3-9 parts of petroleum calcium sulfonate, 1-5 parts of ethyl tert butyl ether, 1-4 parts of combustion improver, 4-9 parts of boronized succinimide, 2-7 parts of cupric isooctoxylborate, 3-8 parts of polyisobutene carbamate, 5-8 parts of dibutyl phosphite and 1-3 parts of viscosity index improver. The improved multi-functional fuel oil additive can improve the low temperature resistance of fuel oil, has corrosion-resistant and lubricating functions and can protect the engine.

The invention discloses an environment-friendly gasoline additive. The environment-friendly gasoline additive is prepared from the following raw materials in parts by weight: 1-5 parts of short chainalcohol, 3-7 parts of core shell structure cerium oxide/silica particles, 2.5-7.5 parts of polyhedral oligomeric silsesquioxane, 0.5-3 parts of perfluoropolyether, 10-30 parts of ethyl tert butyl ether, 5-10 parts of diethylene glycol monomethyl amyl ether, 1-6 parts of butyl acetyl ricinoleate, and 2-8 parts of a fluorinated diamine compound. According to the environment-friendly gasoline additive, the problems such as environmental pollution, engine carbon deposition and fuel oil standing stratification generated after gasoline combustion are solved, power, anti-corrosion, anti-rust and lubrication properties of an engine are also improved, so that engine wear is reduced, the service life of the engine is prolonged, and large-scale promotion and application are more advantageous. The invention further discloses a preparation method of the environment-friendly gasoline additive.

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 the technical field of chemical engineering, and particularly relates to a process for preparing ETBE (Ethyl Tert Butyl Ether) by using a C4 fraction in an etherified liquefied gas as a raw material. A process for preparing the ETBE by using the C4 fraction in the etherified liquefied gas is characterized in that in a synthesis device of ETBE, the raw material C4 and alcohol enter a reactor, isobutene in the C4 and the alcohol generate an etherification reaction under the action of a catalyst to generate ETBE, the reaction materials including redundant alcohol, etherified C4, product ETBE, byproduct dimethyl ether and C8 tertiary butanol are sent to an azeotrope tower so as to be separated, and an ETBE crude product flows out from the bottom of the azeotrope tower. By adoption of a process for producing the ETBE by using the C4 fraction in the etherified liquefied gas as the raw material according to the method provided by the invention, the yield of the ETBE can reach 96 percent.

The invention discloses an energy-saving emission-reducing gasoline additive and a preparation method and application thereof, and belongs to the technical field of fuels. The energy-saving emission-reducing gasoline additive is prepared from denatured fuel ethanol, 2-ethyl hexanol, isopropyl alcohol, methylbenzene, ethyl tert butyl ether, paraffin hydrocarbon solution, a nonionic surfactant, bis-(3-triethoxysilylpropyl)-tetrasulfide, polyoxyethylene sorbitan fatty acid ester, ethyl nitrate and isooctyl nitrate; the energy-saving emission-reducing gasoline additive is applicable to fuel oils,has low addition quantity, high combustion efficiency, low gasoline consumption and good cleaning effect, emission of pollutants is decreased, and environmental pollution is relieved.

The invention discloses a sole material emulsifier which comprises the following raw materials by weight: 5-10 parts of Artemisia stelleriana extract, 2-9 parts of a nonionic emulsifier, 3-10 parts of a non-ionic emulsifier, 5-7 parts of polyamide, 3-7 parts of polyethylene polyamine, 2-10 parts of methyl tert butyl ether, 3-8 parts of ethyl tert butyl ether, 0.5-3.5 parts of a stabilizer and 3.5-6.5 parts of a defoaming agent. The invention provides the sole material emulsifier and a preparation method thereof. The sole material emulsifier is simple in composition, good in emulsification effect, simple in preparation method, and used as an additive for sole production process, and can improve sole toughness and wear resistance, the ionic emulsifier and the non-ionic emulsifier in the raw materials can reduce interfacial tension and reduce energy needed for formation of emulsion from a sole material, and strength and elasticity and other physical performances of the sole material can be improved.