Multistage parallel intensified fixed bed reactor and using method thereof

Abstract

The invention discloses a multistage parallel intensified fixed bed reactor and a using method thereof. The multistage parallel intensified fixed bed reactor comprises a raw material tank, a discharge tank, at least one parallel reaction unit, a circulation pipeline and a circulation pump, wherein each reaction unit comprises a charge pump, a charge heat exchanger, a discharge heat exchanger, a reactor shell and a plurality of fixed bed layer sections installed in the reactor shell; each fixed bed layer section is connected with a charge main pipe via a charge branch pipe; the charge main pipe is connected with the raw material tank; the charge pumps and the charge heat exchangers are arranged on the charge main pipe; each fixed bed layer section is connected with the discharge main pipe via a discharge branch pipe; the discharge main pipe is connected with a discharge tank; the discharge heat exchangers are arranged on the discharge main pipe; one end of the circulation pipeline is connected with the discharge tank, and the other end of the circulation pipeline is connected with the raw material tank; the circulation pump is arranged on the circulation pipeline. The multistage parallel intensified fixed bed reactor is compact in structure, convenient to operate and control, high in reaction efficiency, high in elasticity, convenient to maintain, and is especially suitable for modern large-scale production, and is an upgraded product of the traditional fixed bed reactor.

Description

technical field [0001] The invention relates to chemical reactor equipment, which is a multi-stage parallel reinforced fixed-bed reactor and its application method. Background technique [0002] A fixed bed reactor is a reactor packed with a catalyst to achieve a heterogeneous reaction process. Among them, the catalyst will be piled up into a bed with a certain height (or thickness). Its biggest feature is that the catalyst bed is in a static state, while the liquid material reacts through the bed. Fixed bed reactor is the most widely used and basic reactor in liquid-solid catalytic reaction. Fixed-bed reactors have many advantages, such as the minimum amount of catalyst (or reactor volume) required to complete the same production task; the residence time of materials in the bed can be strictly controlled, and the temperature distribution can be adjusted appropriately, which is conducive to improving The conversion rate and selectivity of the chemical reaction; the cataly...

AI Technical Summary

Problems solved by technology

Despite such improvements, the inherent defects of the segmented series fixed-bed reactor, such as high pressure drop and low reaction rate, cannot be effectively overcome.

[0004] Whether it is an integrated or segmented series fixed bed reactor, there are basically problems such as difficult temperature control, slow material flow rate, small Reynolds number, oil-water phase separation, low mass transfer rate, and low reaction efficiency.

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