Fluidized bed hydrogenation reaction and separation process and device for producing hydrogen peroxide by virtue of anthraquinone method

Abstract

The invention discloses a fluidized bed hydrogenation reaction and separation process and device for producing hydrogen peroxide by virtue of an anthraquinone method. A working solution and hydrogen are continuously added into a fluidized bed reactor with a catalyst for hydrogenation reaction, reacting materials are driven by gas to upwards move to the top of a draft tube, and are downwards filtered through a membrane separator, filtered hydrogenation liquor flows to a hydrogenation liquor storage tank, and the catalyst is retained on a filter element, and returns into the reactor to continue participating in reaction through backflush operation. On the upper part of the reactor, incompletely reacted hydrogen mixed up with a small amount of working solution overflows, and returns to the reactor to participate in reaction through a circulating compressor after the working solution is separated through a circulating gas separator. During regeneration of the built-in membrane separator, an external membrane separator is adopted for separation. According to the process and the device, the raw materials and the catalyst are uniformly mixed, the reaction homogeneity is high, the utilization efficiency of the catalyst is high, and a high-concentration hydrogen peroxide product can be obtained with fewer side reactions. The device is simple in structure, and can run stably.

Description

technical field [0001] The invention relates to a hydrogenation reaction and separation process, in particular to a reaction and separation process for producing hydrogen peroxide by an anthraquinone method fluidized bed palladium catalytic hydrogenation reaction, which belongs to the chemical clean production technology. Background technique [0002] Hydrogen peroxide, also known as hydrogen peroxide (Hydrogen peroxide), is a colorless and transparent liquid strong oxidant, its aqueous solution is a colorless and transparent liquid, soluble in water, alcohol, ether, insoluble in benzene, petroleum ether; pure hydrogen peroxide It is light blue viscous liquid. Hydrogen peroxide has the functions of surface disinfection, chemical production, and odor removal, and its aqueous solution is suitable for wound disinfection, environment, and food disinfection. There are two main methods for industrial production of hydrogen peroxide: electrolysis and anthraquinone. The product ob...

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Problems solved by technology

However, in the fixed-bed catalytic hydrogenation reaction process, because the catalyst is in a fixed state, the contact area between the reaction material and the catalyst is limited, the hydrogenation reaction efficiency is low, and the product yield is low; there are also phenomena such as bias flow and channel flow, which lead to poor reaction. Balanced, many side reactions and by-products, the quality of hydrogen peroxide products is affected, the effective utilization rate of the catalyst is low, the operating cost is high, and the amount of catalyst is large at one time, and the catalyst cannot be replaced at any time

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