FGD Vacuum Belt Filter Cloth — RFQ & Tender Specification Checklist
A standard 16-parameter technical checklist and print-ready plant engineering worksheet for utility and steel FGD gypsum vacuum belt filter cloth procurement.
The same 16-parameter checklist and print-ready plant worksheet on this page, as a file.
16 Essential Technical Fields for FGD Belt Procurement
Basing a commercial tender solely on "nominal length and width" is the leading cause of tracking instability, premature seam fatigue, and cake carryover. Ensure these 16 parameters are captured.
Group A: Machine & Dimensional Boundary
Basic equipment parameters determining mechanical fit and drive clearance.
- 1 Plant / Generating Unit ID e.g., Thermal Power Station 2x660MW Unit 1 FGD or Sinter Plant Desulphurisation.
- 2 Machine OEM & Exact Model e.g., Delkor HBF 3.0x20, Andritz RT 2.6x18, FLSmidth HBF 3.2x22. OEM nameplate photo recommended.
- 3 Active Filtration Area (m²) Effective vacuum zone area across suction boxes.
- 4 Cloth Width & Developed Loop Length (mm) Exact finished edge-to-edge width and closed endless perimeter length.
Group B: Slurry & Process Chemistry
Chemical environment dictating synthetic yarn polymer selection and resistance.
- 5 FGD Gypsum Slurry Origin Limestone-gypsum wet scrubber (coal-fired power plant) vs steel-sinter flue gas desulphurisation.
- 6 Feed Slurry Solids Concentration (wt%) Typical feed consistency from hydrocyclone underflow (typically 45–55 wt%).
- 7 Operating Slurry Temperature & pH Continuous operating liquor temperature (°C) and operating slurry pH range.
- 8 Chloride Content & Cake Wash Quality Chloride ion concentration (ppm Cl⁻) and available fresh wash water volume.
Group C: Fabric & Seam Construction
Weave mechanics, permeability, seam joint, and edge reinforcement configuration.
- 9 Polymer Candidate Family Polypropylene (PP) or Polyester (PET) selected based on chemical exposure and temperature.
- 10 Weave Pattern & Permeability at Stated ΔP Target permeability in CFM or L/dm²·min with the specific laboratory test pressure differential (e.g., 200 Pa per ISO 9237 / ASTM D737).
- 11 Seam Joint & Pintle Material Clipper hook (316L, 904L, or Hastelloy C-22) with PEEK or synthetic pintle core, or PAD seamless joint.
- 12 Edge Reinforcement & Tracking Profile Ultrasonic edge sealing, hot-melt polyurethane edge coating, or rubber V-guide tracking profile.
Group D: Performance & Verification Requirements
Performance metrics, service life clauses, and delivery inspection certificates.
- 13 Target Gypsum Cake Residual Moisture Target cake moisture level (typically ≤ 10 wt% for commercial wallboard plaster use).
- 14 Current Belt Service Life & Failure Mode Average service life achieved by current belts and primary reason for change-out (wear, blinding, or seam failure).
- 15 Tender Service Life Clause Review Explicit evaluation of plant warranty run-hour clauses against process slurry conditions.
- 16 Batch Inspection & Factory QC Deliverables Dimensional verification sheet, sample cut tensile test log, and air permeability batch inspection record.
Print-Ready Plant Engineering Worksheet
Use this standardized single-page worksheet to record dimensions and process data directly on the filter plant floor. Click the print button to output a clean A4 sheet.
HVBFcloth.com · FGD Filter Belt Inspection & Procurement Worksheet
Document Ref: WS-FGD-2026-V2 · Standard Plant Survey Protocol| No. | Technical Specification Item | Field Observation / Measured Value | Unit / Status |
|---|---|---|---|
| 01 | Power Station & Unit No. | [ ] | Plant Tag |
| 02 | Filter OEM & Model Designation | [ ] | OEM Model |
| 03 | Belt Finished Width (Edge-to-Edge) | Measured: [ ] mm | Per drawing spec |
| 04 | Belt Developed Closed Loop Length | Measured: [ ] mm | At working tension |
| 05 | Effective Active Vacuum Filtration Area | Nominal: [ ] | m² |
| 06 | Flue Gas Gypsum Slurry Origin | ( ) Coal-Fired Wet Lime ( ) Steel Sinter FGD | Check one |
| 07 | Feed Slurry Consistency & Solids wt% | Typical: [ ] wt% Max: [ ] wt% | wt% solids |
| 08 | Operating Temperature & Slurry pH | Temp: [ ] °C pH Range: [ ] | Process env |
| 09 | Chloride Concentration in Slurry Liquor | Chloride: [ ] ppm Cl⁻ | Corrosion check |
| 10 | Current Filter Cloth Polymer & Form | ( ) Polypropylene (PP) ( ) Polyester (PET) | Yarn material |
| 11 | Target Air Permeability (with test ΔP) | Value: [ ] ΔP: [ ] Pa | CFM or L/dm²·min |
| 12 | Seam Joint Type & Hook Alloy | ( ) Clipper 316L ( ) Clipper Hastelloy ( ) PAD | Joint spec |
| 13 | Edge Sealing & Tracking Guide Strip | ( ) Ultrasonic Seal ( ) PU Coated ( ) Rubber V-Guide | Tracking profile |
| 14 | Cake Discharge & Residual Moisture | Discharge: ( ) Clean ( ) Sticky Target: [ ]% | wt% moisture |
| 15 | Current Belt Change-out Reason | ( ) Seam Tear ( ) Blinding ( ) Tracking / Edge Wear | Failure mode |
| 16 | Tender Operating Life Clause (if any) | Requirement: [ ] | Hours / Months |
Have an FGD Tender or Replacement Requisition?
Upload your plant data sheet, BOQ, or nameplate photograph. Our technical team will review chemical compatibility, seam mechanics, and permeability selection against your machine layout.