Yingnai FRP Alkaline Scrubber is designed for neutralizing acidic exhaust gases using circulating alkaline solutions such as sodium hydroxide. Corrosion-resistant FRP construction protects the tower in continuously wet chemical environments, while packed or spray contact promotes efficient absorption. Liquid concentration, packing, circulation rate, dosing system, demister and tower dimensions can be customized for each process.
| Item | Typical Technical Specification |
| Product Family | FRP process towers, packed absorbers, wet scrubbers, drying towers and tail-gas treatment equipment |
| Construction Material | Glass-fiber-reinforced thermoset composite with a corrosion-resistant resin system |
| Laminate Structure | Resin-rich corrosion barrier, structural laminate and external protective layer |
| Resin Options | Isophthalic polyester, bisphenol-A vinyl ester, novolac vinyl ester or a process-qualified resin |
| Typical Gas Flow Range | 3,000–600,000 m³/h; larger duties may use multiple towers or parallel trains |
| Typical Tower Diameter | 800–5,800 mm per tower; larger or non-circular configurations can be engineered |
| Typical Tower Height | Approximately 4,500–24,000 mm; determined by contact stages, packing depth and disengagement space |
| Operating Pressure | Normally near atmospheric pressure; specified positive pressure and vacuum conditions require structural verification |
| Typical Gas Velocity | Approximately 1.0–3.0 m/s for preliminary sizing, subject to flooding, entrainment and pressure-drop checks |
| Typical Overall Pressure Drop | Approximately 500–2,000 Pa for packed or spray-type systems; low-pressure-drop designs can be developed |
| Operating Temperature | Selected according to gas chemistry, normal temperature, maximum temperature and resin heat-resistance capability |
| Gas-Liquid Contact | Counter-current packed bed, spray tower, tray contact, bubbling contact or a combined configuration |
| Typical Internals | Packing support, random or structured packing, liquid distributor, spray nozzles, trays, baffles, demister and redistributor |
| Packing Materials | PP, PVC, CPVC, PVDF, ceramic or FRP packing selected according to chemistry and temperature |
| Liquid Circulation System | Corrosion-resistant pump, piping, spray headers, strainers, tank or integral sump, dosing and level control |
| Mist Elimination | Mesh pad, vane-type or multi-stage demister selected according to droplet size and allowable carryover |
| Nozzle Connections | Inlet, outlet, recirculation, drain, overflow, vent, manhole, inspection opening and instrument connections |
| Support Arrangement | Integral FRP base, skirt, support lugs, steel frame or reinforced-concrete foundation interface |
| External Design Loads | Dead load, operating liquid load, wind, seismic, connected-piping load, platform load and thermal movement |
| Surface Finish | Smooth resin-rich internal surface and UV-resistant external finish; colour can be customized |
| Inspection and Testing | Material verification, visual and dimensional inspection, laminate thickness, Barcol hardness, cure verification and leak testing |
| Applicable Standards | ASME RTP-1, ASTM C582, ASTM C581 and ASTM D2583 when specified by the project |
| Customization | Diameter, height, resin, laminate schedule, nozzles, packing, distributor, demister, supports, platforms and access arrangements |
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