Gas-solid fluidized bed reactor with high inflation rate, method for realizing high inflation rate of fluidized bed and applications of gas-solid fluidized bed reactor and method

Abstract

The invention provides a gas-solid fluidized bed reactor with high inflation rate, a method for realizing the high inflation rate of a fluidized bed and applications of the gas-solid fluidized bed reactor and the method. The reactor comprises a concentrated phase and a dilute phase, wherein the concentrated phase contains gas and solid particles, inflation rate of the concentrated phase is as highas 60%-85% and is remarkably higher than that of a common fluidized bed reactor, the solid particles are C<+> particles and comprise 50% or higher of Geldart C-type ultrafine powder and a small quantity of nano-particles, and part of the nano-particles are uniformly or non-uniformly attached to the particle surface of the Geldart C-type ultrafine powder in a single-particle or agglomerate form temporarily or permanently; or the C<+> particles at least comprise Geldart C-type ultrafine powder with a rough surface, and the rough surface of the Geldart C-type ultrafine powder is caused by irregular particle shape or micron-size bulges on the surface. The inflation rate of the concentrated phase in the reactor is quite high, the specific surface area of the particles is quite large, contact efficiency of gas-solid phases can be obviously improved, and gas-solid two-phase reaction and physical gas-solid contact process are facilitated.

Description

technical field [0001] The invention relates to a gas-solid fluidized bed reactor, in particular to a gas-solid fluidized bed reactor with a high gas filling rate. The reactor can also be used as a gas-solid contactor in other physical gas-solid contact processes. Background technique [0002] In process engineering and many other industrial processes, multiphase flow systems are often used, including gas-liquid, gas-solid, liquid-solid, gas-liquid-solid and other multiphase systems. In these systems, sufficient contact between phases is often required to ensure high efficiency. The use of fluidization technology to suspend solid particles in gas or liquid can make the phases fully contact, so fluidized bed reactors are widely used in industry, whether in physical or chemical processes, catalytic processes or non- The catalytic process can achieve better results. [0003] Taking the gas-solid phase system as an example, for example, in a certain gas-solidification chemica...

AI Technical Summary

Problems solved by technology

However, in the past ten years since the mechanism was disclosed, in view of the complexity and uncertainty of basic research in the process of realizing industrialization, the application of ultrafine powder particles with additives in fluidized bed reactors has a great impact on the fluidization performance of the reactor. research has not made substantial progress

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