36 results about "Ethylbenzene hydroperoxide" patented technology

A titanium-containing silicon oxide catalyst satisfying all of the following conditions (1) to (4):(1): an average pore size of 10 Å or more,(2): a pore size of 90% or more of the total pore volume of 5 to 200 Å,(3): a specific pore volume of 0.2 cm3 / g or more, and(4): a quarternary ammonium ion represented by the following general formula (I) is used as a template and then said template is removed by solvent extraction operation;wherein, R1 represents a linear or branched hydrocarbon chain having 2 to 36 carbon atoms, and R2 to R4 represent an alkyl group having 1 to 6 carbon atoms, a method for producing said catalyst, and a method for producing propylene oxide by reacting propylene with a hydroperoxide, except for ethylbenzene hydroperoxide, in the presence of said catalyst.

Oxidative desulfurization (ODS) is an attractive alternative to hydrodesulfurization (HDS) technology due to its lower energy requirement for the removal of refractory sulfur species, such as dibenzothiophene (DBT), from heavier petroleum streams. Diesel containing DBT may be oxidized using a heterogeneous titanium(IV) catalyst and organohydroperoxide oxidant, such as tert-butyl hydroperoxide (TBHP), cumyl hydroperoxide (CHP) and / or ethylbenzene hydroperoxide (EBHP), which proves effective for the selective oxidation and removal of refractory sulfur compounds from diesel fuel.

A titanium-containing silicon oxide catalyst satisfying all of the following conditions (1) to (4): (1): an average pore size of 10 Å or more, (2): a pore size of 90% or more of the total pore volume of 5 to 200 Å, (3): a specific pore volume of 0.2 cm3 / g or more, and (4): a quarternary ammonium ion represented by the following general formula (I) is used as a template and then said template is removed by solvent extraction operation;<paragraph lvl="0"><in-line-formula>[NR1R2R3R4]+ (I)< / in-line-formula>wherein, R1 represents a linear or branched hydrocarbon chain having 2 to 36 carbon atoms, and R2 to R4 represent an alkyl group having 1 to 6 carbon atoms, a method for producing said catalyst, and a method for producing propylene oxide by reacting propylene with a hydroperoxide, except for ethylbenzene hydroperoxide, in the presence of said catalyst.

The invention relates to a reaction method for producing propylene oxide from ethylbenzene hydrogen peroxide and propylene. The question of the molar ratio of benzene. The present invention enters at least two series-connected adiabatic reactors by using raw materials ethylbenzene hydrogen peroxide and propylene liquid phase, and the total amount of propylene and ethylbenzene hydrogen peroxide Under the condition of molar ratio of 1-20, contact with Ti-silica catalyst for epoxidation reaction to generate propylene oxide; among them, the part of epoxidation reaction product containing propylene oxide is recycled to the catalyst bed of each reactor in proportion The technical scheme of the layer entrance solves this problem well, and can be used in the industrial production of propylene oxide from ethylbenzene hydroperoxide and propylene epoxidation.

The invention discloses a method for preparing ethylbenzene hydroperoxide by oxidizing ethylbenzene. A multi-stage oxidation reactor is adopted, and a liquid-phase ethylbenzene reactant is flowed through the multi-stage oxidation reactor step by step, and is gradually oxidized to generate ethylbenzene rich in ethylbenzene. The oxidation mixture of hydroperoxide, oxygen-containing gas is blown into the multi-stage reactor as oxidant, and through the optimized multi-stage reaction process, the problems of the existing horizontal reactor can be effectively avoided, the liquid phase back-mixing can be effectively improved, and the target product B. The selectivity of benzene hydroperoxide improves the ethylbenzene oxidation efficiency, and at the same time ensures the safety and stability in the actual operation of the ethylbenzene liquid-phase oxidation reaction, and improves the economic benefit of the device.

The present invention provides a kind of purification method of propylene oxide (PO), and this method is the purification method of EBHP (ethylbenzene hydrogen peroxide) method propylene oxide crude product, at first adopts C2~C6 alkyl glycol to make in deweighting tower The extractant removes impurities such as water, propionaldehyde, acetone, methanol, etc., and the kettle liquid enters the extractant recovery tower to recover the extractant and circulates to the upper part of the weight removal tower to feed, and the overhead distillate of the weight removal tower removes C3~ C4 light hydrocarbons, most of acetaldehyde and other impurities, the liquid in the delighting tower enters the extraction tower and uses C7-C20 hydrocarbons as the extraction agent to remove residual acetaldehyde, methanol, water and other impurities, the liquid in the extraction tower enters the product tower, and the product The tower uses C7-C20 hydrocarbons as the extraction agent to remove C5-C6 light hydrocarbons, and the propylene oxide product is obtained at the top of the tower, and the product tower liquid enters the solvent stripping tower to recover the extraction agent C7-C20 hydrocarbons, which can be used for propylene oxide ( Industrial application of PO) purification.

The invention relates to an epoxybutane production method to mainly solve the problems of large amount of wastewater and waste residues, severe pollution and strong apparatus corrosion existing in the prior art. The method comprises the following steps: 1, carrying out a peroxidation reaction on ethylbenzene and air to obtain an ethylbenzene hydroperoxide oxidation solution; 2, carrying out an epoxidation reaction on the ethylbenzene hydroperoxide oxidation solution and butylene under the action of a catalyst under liquid phase conditions to generate epoxybutane, alpha-methylbenzyl alcohol and acetophenone; 3, dehydrating alpha-methylbenzyl alcohol to generate styrene; and 4, carrying out a hydrogenation reaction on acetophenone and hydrogen to generate alpha-methylbenzylalcohol, returning the generated alpha-methylbenzylalcohol to step 3, and hydrogenating the returned alpha-methylbenzylalcohol and the alpha-methylbenzylalcohol generated in step 2 to generate styrene. The method adopting the above technical scheme well solves the problems, can be used in industrial production for preparation of epoxybutane and combined production of styrene.