Below is a comprehensive description of the core technical points and application specifications for the bottom fluidizer (fluidization device):
 ?I. Core Functions and Working Principles?
Pulverized Coal Fluidization?
Compressed air is dispersed into micro-airflows through a honeycomb diffusion metal mesh plate (porosity 65%-80%), penetrating the coal powder layer to eliminate cone hanging and arching, achieving pseudo-fluidized flow of coal powder with an emptying rate of up to 98%.?
Uniform Airflow Distribution?
Multi-layer swirl guide vanes + pressure stabilization chamber design ensure that the wind speed deviation across the fluidized bed cross-section is <±8%, and the suspended density gradient of coal powder is <5% (vertical direction).?
Anti-Clogging and Anti-Leakage?
Unidirectional fluidization plate structure prevents back-seepage of coal powder, and stainless steel sintered mesh (aperture ≤15μm) prevents air passage clogging.?

II. Structural Types and Selection Points?
Type? ?Structural Features? ?Applicable Scenarios?
Top-Discharge Type (SLH Type)? Installed at the top conical section of the injection tank, gas-solid mixing coefficient >0.95, high-pressure dense-phase conveying (0.8-1.6 MPa)? High-volatility bituminous coal (poor fluidity)?
Bottom-Discharge Type (XLH Type)? Arranged at the bottom of the coal powder bin/tank, gas-solid mixing coefficient >0.88, medium-low pressure dilute-phase conveying (0.6-1.0 MPa)? Anthracite/semi-coke powder (good fluidity)?

Common Design Features:
Material?: 304/316L stainless steel main body, fluidization plate made of 1Cr18Ni9Ti stainless steel plate (slit 0.5mm×20mm, cross layout).?
Key Parameters?:
Starting pressure: ≤0.05 MPa (pressure drop reduced by 50% compared to traditional designs)?
Temperature resistance: 300°C (316L material resists high-sulfur corrosion)?
Specifications: DN400-DN1500 (inlet/outlet diameters graded for adaptation)?
Equipment failure rate reduced by 30%-40%.?