Visual fluidized bed reaction analysis system

Abstract

The invention relates to a visual fluidized bed reaction analysis system. The system comprises a visual heating furnace and a fluidized reactor placed in the visual heating furnace; a gas inlet of the fluidized bed reactor is connected with a gas flowmeter, a gas outlet is connected with a gas online analysis device; the visual heating furnace comprises a furnace body, the furnace body is orderly provided with an inner tube and an outer pipe from inside to outside; the outer wall of the inner tube is provided with a heating element, the outer wall of the outer tube is provided with an insulation coating, and an observation window is formed on a longitudinal middle part of the insulation coating; the outer tube is capable of rotating along a round groove to facilitate the view angle adjusting. The analysis system disclosed by the invention is simple in structure, small in volume, can be applied to measuring a reaction kinetic parameter of a multi-phase complex system, and approaches to intrinsic kinetics; and the system can be used for the fluidization field to observe the flowing and fluidization behavior of multi-scale structure such as particles and bubbles under the heating state.

Description

technical field [0001] The invention relates to a visualized fluidized bed reaction analysis system for scientific research in the fields of energy, chemical industry, metallurgy, biology, materials, etc., in particular to a visualized fluidized bed reaction analysis system applied in the field of fluidization. Background technique [0002] The fluidized bed reactor based on particle fluidization technology has the characteristics of mass transfer, fast heat transfer rate, uniform bed temperature, etc., and has been widely used in traditional and Emerging industry has become an important technical means to study gas-solid reaction and material synthesis. But in the gas-solid bubbling fluidized bed, the gas will form bubbles, and the particles will form agglomerates due to the inelastic collision between particles, the adhesion of particles during the reaction process, the liquid bridge and the strong van der Waals force of fine particles. The existence of these heterogeneou...

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Problems solved by technology

However, the furnace body of this patent is composed of three quartz tubes, inner, middle and outer, as well as a furnace cover and a furnace bottom, and has a complex structure.

On the one hand, the diameter of the furnace body is large, and the distance between the inner tube and the outer tube is far away, which is not conducive to close-range visual observation

On the other hand, the furnace bottom and the furnace cover are connected as a whole through the support rod, and the outer tube cannot be rotated, which is not conducive to adjusting the angle of the observation window and affects the practicability of the product

Moreover, thermocouples, heating furnace wires and power cord connectors are located inside the furnace cover, resulting in consumables such as thermocouples, heating furnace wires and internal components that cannot be replaced, thus affecting the service life of the visualization heating furnace

In addition, when used with the magnetic field coil, due to the large diameter of the outer tube, in order to ensure the normal use of the magnetic field coil, a magnetic field coil with a larger inner diameter is required, resulting in a sudden increase in the weight and volume of the magnetic field coil and an increase in cost

The characteristic of its micro-fluidized bed reaction analyzer is the analysis of reaction kinetic parameters, which cannot be applied to study the particle fluidization behavior and gas-solid reaction state of large-diameter fluidized bed reactors and the influence of the amplification effect of fluidized bed reactors.

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