Fluidizer

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%.‌