Products — FRP Fans, Metal Fans & FRP Scrubbers

FRP · Medium/Low Pressure

TF-Series FRP Fans

FRP centrifugal fans with excellent acid and alkali resistance, light weight and smooth operation — the workhorse for corrosive exhaust in chemical, electroplating and wastewater deodorization plants. Widely used for acidic, alkaline and organic corrosive gas extraction in semiconductors, optoelectronics, PCB, photovoltaics, chemicals, pharmaceuticals, new materials, new energy, non-ferrous metals, paper, food processing, electronics, biotech, optical fibre, metallurgy and VOC recovery.

LAB laboratory fan, FRP centrifugal fan for laboratory exhaust (official product photo)

FRP · Laboratory Exhaust

LAB Laboratory Fans

High-efficiency, low-noise, safe and stable fans designed for laboratory exhaust duty — widely used in the ventilation and exhaust systems of universities, research institutes, inspection & quarantine bureaus and food & drug administration laboratories.

FRP · High Pressure

HF-Series High-Pressure Fans

FRP high-pressure fans for high-resistance corrosive-gas extraction — wastewater deodorization, sludge drying, pharmaceutical chemicals, fibreglass production, rare-earth smelting, paper-mill anaerobic systems and acid recovery. Dingyu high-pressure fans are AMCA-certified models (company profile).

FRP · Ultra-High Pressure

FRP Ultra-High-Pressure Fans

For tail-gas treatment systems with ultra-high resistance and aggressive corrosive gases — maximum pressure up to 12,000 Pa.

FRP · Explosion-Proof

FRP Explosion-Proof Fans

Explosion-proof FRP with anti-static additives for electrical conductivity, paired with an explosion-proof motor — for petrochemical and chemical sites with flammable or explosive atmospheres. The FRP is made conductive by adding antistatic agents (graphite, carbon black, acetylene black); surface resistance of non-metallic enclosure parts is tested to GB/T 3836.1-2021 and measures below 10⁹ Ω.

Metal · Direct Drive

Metal Fans (Direct Drive)

Direct-drive centrifugal fans in metal construction — robust and compact, for high-temperature, dust-laden and general industrial ventilation and exhaust duties: semiconductors, chemicals, pharmaceuticals, petrochemicals, metallurgy, photovoltaics, agrochemicals, surface treatment and new energy. TDC-series metal centrifugal fans carry third-party type-test reports (2019).

Metal · Centrifugal

Steel Centrifugal Fans

Belt-driven steel centrifugal fans on a vibration-isolated common base, dynamically balanced before delivery — reliable in operation and easy to maintain. Built from impeller, casing, inlet cone, damper and drive assembly; also used for dust collection, incinerator exhaust, VOC exhaust, high-temperature exhaust, semiconductor processes and forced air supply.

Stainless-steel centrifugal fan (official product photo)

Metal · Stainless Steel

Stainless-Steel Fans

A key component of exhaust systems in semiconductors, precision electronics, chemicals, wastewater treatment and metal processing. Delivered in 304 and 316L stainless steel (project records, company brochure).

Metal · Explosion-Proof

Metal Explosion-Proof Fans

Metal fans with explosion-proof motors for tail-gas treatment in explosive-gas and explosion-proof environments.

Soundproof-box fan: FRP fan inside an acoustic enclosure (product photo)

Low Noise · Box Type

Soundproof-Box Fans

The fan is housed in an acoustic enclosure that significantly reduces boundary noise — ideal for laboratories and indoor ventilation systems in noise-sensitive locations. Available in medium/low-pressure, high-pressure and explosion-proof variants, with high fan efficiency and easy maintenance access (company profile).

High-pressure fan inside an acoustic enclosure, door open (official product photo)

Low Noise · High-Pressure Box Type

High-Pressure Soundproof-Box Fans

High-pressure fans in acoustic enclosures for chemical, municipal and metal-smelting plants and other high-resistance treatment processes where boundary noise must be controlled.

Fan Accessories & Fittings

Dampers

For flow regulation and resistance adjustment in duct networks: single-blade, multi-blade and petal dampers; electric, manual or pneumatic actuators; inlet dampers and outlet non-return dampers; in FRP, metal (carbon steel, stainless steel) or PP.

Flexible Connectors

Vibration-isolating connections between fan and ducting, designed for the actual operating conditions: PVC, silicone-cloth and fluoro-rubber-cloth flexible connectors, and stainless-steel bellows joints.

Shaft Seals

A range of shaft-seal designs (including graphite gland-packing seals) for positive-pressure operation and corrosive-gas duty, preventing leakage at the casing penetration.

Documented Delivery Example — FRP Centrifugal Fan

Configuration actually delivered for a laboratory ventilation project (Guangxi government procurement award record, 2024): 1,450 rpm · 8,000 m³/h · 900 Pa total pressure · 5.5 kW / 380 V · direct drive. Casing and impeller in vinyl-ester resin with E-glass fibre; cantilever closed backward-curved impeller; felt / gland-packing shaft seal. Shown as a delivered example, not a series selection range — send us your operating conditions for a model selection.

Vertical scrubbing tower installed on site (project photo)

Gas Absorption Unit

SCR Vertical Scrubbing Towers

Packed-bed scrubbers for acidic/alkaline, organic and dust-laden exhaust: high treatment efficiency, low energy consumption and low pressure drop, able to purify mixed gas streams simultaneously. Airflow 2,000–82,000 m³/h. The full 17-model specification table, standard fittings and options are listed below.

Horizontal scrubbing tower under fabrication in the Dingyu plant (photo)

Horizontal · FRP/PP

Horizontal Scrubbing Towers

Bodies in FRP or PP — the FRP laminate contains approx. 35–40% glass fibre and 60–65% resin for long-term resistance to strong acids, alkalis and salts, with wall thickness engineered per model and duty. The circulation tank (same material as the tower) holds at least 3 minutes of pump delivery and includes level control, overflow, drain and auto-refill. Packing is moulded from corrosion-resistant PP, CPVC or PVC — non-clogging, high void fraction and surface area, low pressure drop; the outlet demister removes over 99% of entrained water. The horizontal layout suits height-restricted sites; explosion-proof FRP vessels, ducts, elbows and dampers are also available.

Whole-plant waste gas treatment system in operation: scrubbers, fans and ducting (project photo)

Whole-Plant System

Whole-Plant Waste Gas Systems

Scrubber + fan + ducting + controls delivered as one package: tower body, circulation water system, chemical dosing system, level control and electrical control system, with pH/ORP control options.

Adsorption · Activated Carbon / SDG

Waste Gas Adsorption Units

Economical adsorption units for high-volume, low-concentration organic and acid/alkali exhaust, using pelleted activated carbon, honeycomb activated carbon or SDG adsorbent selected for the actual gas stream. High adsorption efficiency, compact footprint, simple maintenance, low running cost, simultaneous treatment of mixed organic gases, fully enclosed design for indoor or outdoor use. Adsorbent performance data is tabulated below.

FRP swirl-plate tower for dust removal (brochure photo)

Dust Removal · Dry / Wet

Waste Gas Dust-Removal Units

Dry filter dust collectors and wet swirl-plate towers for dust- and mist-laden exhaust: high collection efficiency, stable operation, high automation, robust corrosion-resistant construction. For non-recovered dust, high-temperature gas and absorbable acid/alkali gas in chemicals, mining & metallurgy, building materials, furniture and spray-painting industries.

Large field-wound FRP storage tanks (brochure photo)

FRP · Made to Order

Custom FRP Equipment

Beyond fans and scrubbers, Dingyu builds custom non-standard FRP equipment to order: sewage-tank FRP covers, sludge thickening tanks, FRP desulfurization towers, FRP swirl-plate towers, non-standard FRP vessels, FRP rectangular tanks, PVC-lined FRP towers, PVDF-lined FRP electrolytic cells, FRP sectional water tanks, large sectional FRP towers, large field-wound storage tanks, vertical biofiltration deodorizers and ammonia stripping systems.

Ammonia-nitrogen exhaust recovery unit on a project site (project photo)

Treatment Packages

Integrated Treatment Packages

Complete packages beyond scrubber + fan: integrated biofiltration deodorization systems, energy-saving VOC treatment packages and high-strength ammonia-nitrogen exhaust recovery units — plus acid/alkali scrubbing systems, FRP quench/cooling towers rated to 200 °C for RTO and waste-incineration exhaust, activated-carbon adsorption towers and swirl-plate towers. Air-pollution control engineering from planning and design through fabrication, installation, operation and online monitoring.

SCR vertical scrubbing tower installed on a project site (photo) — SCR vertical scrubbing tower on a project site (actual photo)

SCR vertical scrubbing towers — full specification table (17 models)
Model	Tower dia. A (mm)	Tower height B (mm)	Gas inlet C (mm)	Packing depth D (mm)	Demister depth F (mm)	Circulation water (L/min)	Airflow (m³/h)
SCR-600	600	4,300	300	1,200	600	70	2,000
SCR-800	800	4,400	400	1,200	600	130	4,000
SCR-1000	1,000	4,500	450	1,200	600	200	6,000
SCR-1200	1,200	4,600	550	1,200	600	270	8,000
SCR-1400	1,400	4,700	600	1,200	600	370	11,000
SCR-1600	1,600	4,800	700	1,200	600	490	14,500
SCR-1800	1,800	4,900	800	1,200	600	600	18,000
SCR-2000	2,000	5,000	900	1,200	600	770	23,000
SCR-2200	2,200	5,000	1,000	1,200	600	900	27,000
SCR-2400	2,400	5,000	2000×450	1,200	600	1,100	33,000
SCR-2600	2,600	5,100	2000×600	1,200	600	1,300	38,000
SCR-2800	2,800	5,200	2000×600	1,200	600	1,500	44,000
SCR-3000	3,000	5,300	2200×600	1,200	600	1,700	51,000
SCR-3200	3,200	5,400	2300×700	1,200	600	1,900	58,000
SCR-3400	3,400	5,500	2400×800	1,200	600	2,200	65,000
SCR-3600	3,600	5,600	2600×800	1,200	600	2,400	73,000
SCR-3800	3,800	5,700	3200×800	1,200	600	2,700	82,000

Standard fittings (acid-mist towers): spray system, packing media, moisture separator, inspection window / access manhole, overflow, drain & auto-refill ports, pressure gauge. Options: pH control, ORP control, chemical storage tank, chemical level control, circulation-tank level control. Non-standard sizes can be made to order. Source: Dingyu Waste Gas Treatment Engineering Brochure (February 2025 edition).

Adsorbents for adsorption units — performance data (brochure)
Adsorbent	Form / size	Density (kg/m³)	Key performance
Pelleted activated carbon	Φ4×8	460–650	Benzene adsorption 20–55%; carbon tetrachloride adsorption 30–70% (by iodine-value grade)
Honeycomb activated carbon	100×100×100 mm, 1.5 mm cells	250–380	Benzene adsorption 30–70%; carbon tetrachloride adsorption 50–85%
SDG adsorbent, Type I	Φ3×5-10	650–750	Adsorption capacity 25–35%; for NOx
SDG adsorbent, Type II	Φ3×5-10	730–830	Adsorption capacity 40–50%; for acid gases such as H₂SO₄, HCl and HF

Source: Dingyu Waste Gas Treatment Engineering Brochure (February 2025 edition), adsorption unit data table.

Technical Data & Fan Selection →Catalogue selection ranges and specification tables for the TF / HF FRP series and the TDC / TAA metal series. Project Cases →Delivered scrubbing and fan projects with measured gas volumes and inlet / outlet concentrations.

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Suzhou Dingyu Energy-Saving Equipment Co., Ltd. · No. 4058 Linhu Avenue, Wujiang District, Suzhou, Jiangsu, China