Swept-back high-efficiency hot-plate diversion rectification multiphase reaction kettle

Abstract

The invention discloses a swept-back high-efficiency hot-plate diversion rectification multiphase reaction kettle. The reaction kettle comprises a cylindrical kettle body which is arranged vertically. A discharge port, a liquid feeding port, and a gas feeding port are sequentially arranged from top to bottom on the side wall of the kettle body. A central shaft connected with an outside motor is arranged vertically in the kettle body. The reaction kettle is characterized in that three layers of vertically arranged swept-back half-pipe turbo agitators are arranged on the central shaft. 6-10 high-efficiency heat-exchange diversion rectification devices are horizontally uniformly distributed between the outer end of the swept-back half-pipe turbo agitators and the inner wall of the kettle body. 4-6 sheets of side wall diversion full baffles are uniformly distributed on the inner wall of the kettle body. A liquid jet distributor connected with the liquid feeding port and a gas jet distributor connected with the gas feeding port are arranged on the bottom of the kettle body. An overflow zone is arranged in the kettle body. Reaction products pass through the overflow zone and is collected from the discharge port. The swept-back high-efficiency hot-plate diversion rectification multiphase reaction kettle has the advantages of good multiphase system mixing effect, large heat-exchange area, and precise temperature control.

Description

technical field [0001] The invention relates to a multiphase reaction kettle, in particular to a swept-back high-efficiency hot plate diversion and rectification multiphase reaction kettle, which is especially suitable for the reaction of benzene and hydrogen in an aqueous phase system under the action of a solid ruthenium-zinc catalyst. Gas-liquid-liquid-solid system of partial hydrogenation reaction. Background technique [0002] With the development of the chemical industry, multiphase mixing and reaction systems are becoming more and more extensive. A large number of chemical reaction processes need to involve gas, liquid, and solid multiphase, and such reactions are especially widely used in hydrogenation reactions in the petrochemical industry. Since hydrogen has a low boiling point and is extremely difficult to liquefy, hydrogen participates in the reaction in a gaseous state. For liquid-phase hydrogenation, the reaction system is gas-liquid two-phase or gas-liquid-...

AI Technical Summary

Problems solved by technology

However, the stirring blades of the above-mentioned reactors are ordinary stirring blades, which generate serious eddy currents behind the stirring blades, resulting in high stirring power, and the heat exchange coil installed inside is only for heat exchange, and does not provide any fluid flow optimization. When the multiphase chemical reactor is used for the gas-liquid-solid three-phase reaction, the residence time is short, the mixing is incomplete, and the stirring power is high. When the heat of reaction is large, the heat generated by the reaction cannot be removed in time, which is not conducive to the smooth progress of the reaction. reduced reaction efficiency

Images