Externally circular three-phase fluidized bed reactor

Abstract

The invention relates to the technical field of fluidized bed reactors, in particular to an externally circular three-phase fluidized bed reactor. The externally circular three-phase fluidized bed reactor comprises a main bed, an auxiliary bed arranged on the left side of the main bed, a wastewater storage tank communicating with the lower end of the main bed, a three-phase separation port formed in the top of the auxiliary bed and a clear water storage tank connected with the three-phase separation port through a pipeline, wherein the upper end of the main bed is connected with the upper end of the auxiliary bed through a pipeline, the lower end of the main bed is connected with the bottom of the auxiliary bed through a pipe section, a rotary disc is mounted in the main bed through a bearing, and multiple straight lamp tubes are vertically mounted on the rotary disc. The externally circular three-phase fluidized bed reactor has a good light mass transfer effect, during using, wastewater enters from the main bed and performs ascending motion in the main bed under the action of a water feed pump II and an air compressor, and external circulation is formed by the main bed and the auxiliary bed; during using, the wastewater circulates in the anti-clockwise direction in the external circulation formed by the main bed and the auxiliary bed, so that the treatment effect is better.

Description

Technical field [0001] The invention relates to the technical field of fluidized bed reactors, in particular to an external circulation three-phase fluidized bed reactor. Background technique [0002] At present, photoreactors can be divided into fluidized bed reactors and fixed bed reactors according to the form of catalysts. In fixed bed reactors, the catalyst is mostly supported on a carrier with a large continuous surface area, and the liquid to be treated flows across the surface of the catalyst. A reaction occurs; the fluidized bed reactor has a relatively simple structure and a large contact area between the catalyst and pollutants, but the catalyst is difficult to recover, the active component is lost, and it is easy to condense in the aqueous solution, so it is difficult to become a practical sewage treatment technology. Summary of the invention [0003] The purpose of the present invention is to solve the above problems and provide an external circulation through the mai...

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Problems solved by technology

[0002] At present, photoreactors can be divided into fluidized bed reactors and fixed bed reactors according to the form of the catalyst. In the fixed bed reactor, the catalyst is mostly loaded on the carrier with a large continuous surface area, and the liquid to be treated flows through the surface of the catalyst. The reaction occurs; the structure of the fluidized bed reactor is relatively simple, the contact area between the catalyst and the pollutant is large, but the catalyst is difficult to recover, the loss of active components is large, and it is easy to condense in the aqueous solution, so it is difficult to become a practical sewage treatment technology

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