Fluidized bed reactor and inner constructional elements thereof

Abstract

The application discloses a fluidized bed reactor and inner constructional elements thereof. The fluidized bed reactor comprises a tower cylinder, wherein a plurality of inner constructional elements are arranged in the tower cylinder; each inner constructional element comprises a junction surface, a contacting surface and a flow guide surface, and the junction surfaces are arranged on the inner wall surface of the tower cylinder; the contact surfaces and the flow guide surfaces are connected to the junction surfaces in an inclining manner, and an inflexion point is formed between each contact surface and each flow guide surface; when solid particles enter the tower cylinder through a feed port, the contact surfaces can guide the solid particles to flow along the radial direction of the tower cylinder and the directions of the inflexion points; when solid particles pass through an inverse region point, the flow guide surfaces can guide the solid particles to be distributed in the tower cylinder along the radial direction of the tower cylinder and flow facing to an exhaust port, and thus a solid-gas contact reaction is promoted, the solid-gas axial direction and radial direction mixing capability is strengthened, and a flow field in the tower cylinder is optimized.

Description

technical field

[0001] The application belongs to the field of chemical reactors, and in particular relates to a fluidized bed reactor and internal components thereof. Background technique

[0002] Generally, in the desulfurization tower used in the semi-dry circulating fluidized bed flue gas desulfurization (Circular Fluid Bed-Flue Gas Desulfurization, referred to as CFB-FGD) process, the flow characteristics of solid desulfurizer particles are affected by the concentration of solid particles in the tower. The two important factors of desulfurization efficiency are both directly related to the motion characteristics of desulfurizer solid particles. Most of the circulating fluidized bed flue gas desulfurization units in operation at present have uneven radial distribution of desulfurizer solid particle motion parameters in the dense phase area of ​​the tower, and The resulting gas-solid radial mixing ability is weak, and the gas-solid contact reaction efficiency is not ideal...

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