Integrated circulating fluidized bed apparatus

Abstract

The invention relates to an integrated circulating fluidized bed apparatus. The upper part of an external sleeve cylinder is in a circular truncated cone structure with a thick top and a thin bottom, wherein ratio of maximum diameter to minimum diameter is 1.1-5. The lower part of the external sleeve cylinder is a cylinder in equal diameter and is connected to an internal sleeve cylinder through a screw bolt. The fluidized bed apparatus, from bottom to top, successively includes a solid collection port, a center gas distributor, an annular space gas distributor, a solid collector, and the internal sleeve cylinder. A gas outlet and a solid inlet are disposed on the upper part of the external sleeve cylinder. The center gas distributor is located right under the internal sleeve cylinder and the annular space gas distributor is located around the periphery of the center gas distributor and between the internal and the external sleeve cylinders. A gas-solid separation zone is formed in the upper part of the external sleeve cylinder. The lower part of the external sleeve cylinder is totally cylindrical in shape and is separated into a lifting zone and a circulating zone by means of the internal sleeve cylinder. The apparatus integrates a fluidized bed, a solid circulating system and a gas-solid separation system, so that the production apparatus is simplified. Gas flows in the status of plug flow, so that a gas phase and a solid phase are completely contacted and dead zone is avoided. The apparatus reduces power consumption and reduces manufacturing and producing cost.

Description

technical field [0001] The invention relates to an integrated circulating fluidized bed equipment suitable for mass transfer and heat transfer between gas-solid two phases, which can be used in the fields of gas-solid catalytic reaction, gas-solid heat exchange, solid combustion reaction and the like. Background technique [0002] Compared with fixed beds, fluidized beds have the characteristics of pressure reduction, high mass transfer and heat transfer efficiency, and are widely used in mass transfer, heat transfer, drying and other technical fields, and are of great significance to industrial and agricultural production. As a special fluidized bed, the circulating fluidized bed can realize the circulation of solid matter into a fluidized state, increase the contact time between the solid and the gas, improve the mass transfer and heat transfer efficiency, and is conducive to clean production. Application prospect and research value. [0003] The existing circulating flui...

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Problems solved by technology

[0006] The invention proposes an integrated circulating fluidized bed, which integrates the fluidized bed, gas-solid separator, gas-solid conveying and circulation system, and solves the problems of complex equipment, high energy consumption, equipment cost and operation of traditional circulating fluidized bed Disadvantages such as high cost and low operating flexibility can not only realize solid phase fluidization and plug flow flow form, avoid gas short circuit, but also complete gas-solid separation in time, and realize internal circulation of solid phase, and more importantly, integration The fluidized bed has good continuity, uniformity and adaptability

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