Oscillatory flow reactor used for preparing cumene hydroperoxide (CHP) in catalytic oxidation of cumene and method for preparing cumene hydroperoxide in catalytic oxidation of cumene

Abstract

The invention relates to an oscillatory flow reactor used for preparing cumene hydroperoxide (CHP) in catalytic oxidation of cumene and a method for preparing CHP in catalytic oxidation of the cumene. The oscillatory flow reactor comprises a feed distribution section, a reaction section, a gas-liquid separation section and a condensation section; the feed distribution section comprises gas inlets, a gas distributor, a liquid inlet and a liquid-solid separator, and the liquid-solid separator is connected with an oscillation pump; the main body of the reaction section comprises a corrugated reaction tube with multiple sections which are in sectoral arc connection to form a concave-convex corrugated shape integrally, a heat tracing layer is arranged on the outer side of the corrugated reaction tube, and heat tracing medium enters from a heat tracing liquid inlet and flows out from a heat tracing liquid outlet; each of the upper, middle and lower section of the main body of the reaction section is provided with a temperature measuring point; the gas-liquid separation section is provided with a discharge hole with the liquid-solid separator, a safe injection hole and an electromagnetic valve and an electrically operated valve which are connected with the safe injection hole; the condensation section is of a double-layer tube shell structure, a gas exit is arranged in the tube layer, and a condensate inlet and a condensate outlet for the condensate medium are arranged in the shell layer. By the arrangement, quick reaction under lower reaction temperature and pressure is achieved, and meanwhile, higher CHP selectivity is acquired.

Description

technical field [0001] The invention relates to an oscillating flow reactor and a method for preparing cumene hydroperoxide by catalytic oxidation of cumene. Background technique [0002] The oxidation of cumene to generate cumene hydroperoxide (CHP) is a key step in the phenol-acetone process. At present, the scope of application of CHP is expanding day by day. In addition to being used for the synthesis of phenol, it has been widely used in the fields of fine chemicals and polymer materials. Such as CHP can be used as the initiator of chain auto-oxidation reaction and polymerization reaction, the accelerator of rubber vulcanization, the oxidant of organic compound, etc., in addition CHP is also commonly used in the synthesis of dicumyl peroxide (DCP), and DCP is a Fine chemicals for a wide range of uses. The traditional cumene oxidation process mostly adopts a catalyst-free self-oxidation process that adds a small amount of oxidation product cumene hydroperoxide or dicum...

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of reactor that is applicable to powdery catalyst catalytic oxidation cumene to make cumene hydroperoxide and synthetic method thereof, overcome existing traditional cumene oxidation process induction period is long, and reaction speed is slow, The reactor is huge, and oxygen molecules are difficult to activate under non-catalytic conditions, resulting in high reaction temperature, many side reactions and potential safety hazards. At the same time, the catalyst can be used repeatedly.

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