2026 Petrochemical Industry Fan Selection White Paper: Reshaping Intrinsic Safety and Energy Efficiency Boundaries Amid the “Equipment Renewal” Wave

Introduction: 2026, Which Way is the “Wind” Blowing in the Petrochemical Industry?

Standing at the end of 2025 and looking ahead to 2026, the global and Chinese petrochemical industries are undergoing an unprecedented structural reshaping. This is not merely a fluctuation in market supply and demand cycles, but an industrial upgrade driven by the dual wheels of policies, regulations, and technological iteration.

As the “Stable Growth Work Plan for the Petrochemical and Chemical Industry (2025-2026),” jointly issued by China’s Ministry of Industry and Information Technology and seven other departments, enters a comprehensive critical period, “strictly controlling new capacity, eliminating backward equipment, and improving intrinsic safety” have become the industry’s main themes. For operators of refineries, chemical plants, and offshore oil and gas platforms, this means the old logic of equipment procurement must be overturned: Fans are no longer just tools for air transport; they are safety barriers for corporate compliance and financial levers for accessing the policy dividends of “large-scale equipment renewal”.

As a global expert in HVAC and industrial ventilation fans, Ningbo Longwell Electrical Technology Co., Ltd. (LONGWELL) deeply understands this transformation. We provide not just fans, but a complete set of solutions targeting Zone 1/Zone 2 hazardous environments, high-energy-consuming air cooler retrofits, and deep VOC governance.

Chapter 1: Guarding the Safety Red Line—Interpreting the New Regulations of the 2025-2026 “Hazardous Chemicals Safety Law”

Safety is the bottom line of the petrochemical industry. On November 1, 2025, the brand-new Hazardous Chemicals Safety Law was officially implemented, with a severity far exceeding previous administrative regulations. The new law explicitly puts forward requirements for “full lifecycle management” and “source governance.” For ventilation equipment located in explosive gas environments, compliance reviews will rise to the level of legal liability.

1.1 The “Life and Death Red Line” of Zone 1 & Zone 2

In pump rooms, compressor workshops, and tank farms of refineries, leaking hydrocarbon gases (such as methane, ethylene, propane) can accumulate at any time. The new law requires that all electrical equipment operating in Zone 1 (where explosive gas occurs frequently) and Zone 2 (where it occurs occasionally) must hold a nationally recognized explosion-proof certificate and establish a “one-machine-one-file” traceability system.

Many outdated fans still in use by enterprises often suffer from hidden dangers such as falsely labeled explosion-proof ratings or substandard impeller materials (e.g., using ordinary carbon steel that easily generates sparks). In the safety inspections of 2026, such equipment will be subject to “one-vote veto” rectification orders.

1.2 LONGWELL LWEAF Series: Born for “Intrinsic Safety”

Addressing this pain point, LONGWELL developed the LWEAF Series Explosion-proof Axial Fans, positioning them as the “Safety Guardians” of petrochemical plant areas.

· ExdII BT4 Gb Certification Level:

– The LWEAF series has fully passed strict ExdII BT4 testing.

– Ex d (Flameproof): The motor housing is designed to withstand internal explosion pressure without rupturing, and flames cannot propagate through the joint surfaces to the external environment.

– IIB Gas Coverage: Perfectly adapted to typical petrochemical gas environments like Ethylene, covering the vast majority of refinery needs.

– T4 Temperature Group: The maximum surface temperature is strictly controlled below 135°C, eliminating the risk of igniting low-flashpoint solvent vapors.

· Non-Sparking Design of Cast Aluminum Impeller:

According to GB/T 3836.1 and international IEC standards, LWEAF fan impellers use high-strength cast aluminum alloy. Compared to competing steel impellers, if the aluminum alloy impeller fails and sweeps the bore (fricts against the casing), it absolutely will not generate mechanical sparks. This is the ultimate safety guarantee at the physical level.

· IP55 Protection & Anti-Corrosion Process:

Considering the high salt spray corrosion environments of offshore platforms and coastal refineries, the LWEAF series casing uses thickened steel plates treated with high-pressure electrostatic spraying. The protection level reaches IP55, effectively blocking dust accumulation and high-pressure water gun jets.

View LWEAF Product Specifications Now: https://www.longwellfans.com/product-category/axial-fans/

Chapter 2: Seizing the “Equipment Renewal” Dividend—Achieving High Efficiency and Energy Saving with EC Technology

2026 is a critical year for the implementation of the “large-scale equipment renewal” policy. The National Development and Reform Commission has clearly stated that it will support industrial enterprises in energy-saving and carbon-reduction retrofits through ultra-long-term special treasury bonds and fiscal interest subsidies. This provides an excellent funding window for petrochemical enterprises to replace old, high-energy-consuming equipment.

2.1 The Energy Consumption Black Hole of Traditional AC Fans

A large number of Fin Fan Coolers and cooling tower fans in refineries traditionally use AC asynchronous motors. These motors typically have only two states: “on” and “off,” or rely on inefficient belt drives. At night or when winter temperatures are low, the fans still run at full speed, causing massive energy waste (an effect known as “a big horse pulling a small cart”).

2.2 LONGWELL EC Technology: The Digital Energy-Saving Engine

LONGWELL’s EC (Electronically Commutated) fans are the ultimate weapon to meet this challenge. EC motors combine the high efficiency of DC motors with the ease of use of AC power, featuring built-in intelligent control modules.

· Up to IE5 Energy Efficiency Class: EC motors eliminate the rotor loss (Slip Loss) of traditional induction motors, achieving efficiencies of over 90%. Real-world data shows that replacing traditional AC fans with LONGWELL EC fans in refinery air cooler retrofit projects yields a comprehensive power saving rate of 30%~50%.

· Demand-Based Ventilation: Through 0-10V or PWM speed control signals, EC fans can adjust speed in real-time based on the outlet temperature of the process fluid.

– Case Simulation: An air cooler in an ethylene plant only needs to run at 60% speed in winter. According to fan laws (power is proportional to the cube of the speed), the energy consumption at this time is only 21.6% of the rated power. In contrast, traditional AC fans maintain energy consumption above 80% even when valves are adjusted.

· Gateway to Industrial IoT (IIoT): LONGWELL EC fans come standard with a Modbus RS485 communication interface. This means the fans can be directly integrated into the factory’s DCS (Distributed Control System).

– Condition Monitoring: The central control room can view the speed, current, and internal temperature of each fan in real-time.

– Predictive Maintenance: The system can predict bearing faults based on current fluctuations, avoiding huge losses caused by Unplanned Shutdowns.

2.3 ROI Calculation: Letting Data Convince the CFO

Assume a refinery replaces 100 aging ventilation fans (3kW each):

· Traditional AC Fans: Annual power consumption approx. 2,400,000 kWh.

· LONGWELL EC Fans: Annual power consumption approx. 1,680,000 kWh (30% energy saving).

· Annual Electricity Cost Savings: 720,000 kWh × 0.8 RMB/kWh = 576,000 RMB.

· Plus Government Equipment Renewal Subsidies (approx. 10%-15% of investment): Clients can typically recover their entire investment cost within 12-18 months. This is not just a purchase; it is a high-return financial investment.

LONGWELL EC Centrifugal Fan Series: https://www.longwellfans.com/product-category/centrifugal-fans/

Chapter 3: Conquering Environmental Challenges—VOCs Governance and the High-Pressure Heart of RTO Systems

Under the dual pressure of “Dual Carbon” goals and the “Blue Sky Defense War,” VOCs (Volatile Organic Compounds) governance has become a compulsory course for petrochemical enterprises. The Regenerative Thermal Oxidizer (RTO) is currently the mainstream governance process, but its complex ceramic heat storage structure places extremely high demands on fan performance.

3.1 The Challenge of High Resistance and High Temperature

The core of the RTO system lies in heat exchange, and its ceramic bed resistance is typically as high as 2000Pa – 3000Pa. Additionally, the exhaust gas may contain corrosive components, and the treated flue gas temperature is relatively high. Ordinary civil fans will quickly surge, stall, or even experience impeller disintegration in this environment.

3.2 LONGWELL Industrial High Pressure Centrifugal Fan Solutions

LONGWELL has developed Industrial High Pressure Blowers specifically for RTO/RCO systems.

· 3000Pa+ Ultra-High Static Pressure: Optimized volute and impeller flow channel designs ensure stable flow output even after overcoming the huge resistance of the RTO system, preventing backfire accidents caused by furnace pressure fluctuations.

· High Temp Resistance Structure: Utilizing special bearing cooling technology and heat-resistant alloy steel materials, the fans can operate continuously and stably at 250°C or even higher temperatures.

· Backward Curved Impeller: We recommend using backward plate or airfoil impellers. Compared to forward-curved impellers, backward-curved impellers feature “non-dust accumulation” and “non-overloading” characteristics. Even if the waste gas contains small amounts of tar or particulate matter, it is not prone to adhering to the blades and causing dynamic balance failure.

View High Pressure Blower Product Line: https://www.longwellfans.com/product-category/centrifugal-fans/industrial-centrifugal-fans/

Chapter 4: Why Choose LONGWELL? — A Value Proposition Beyond “Domestic Substitution”

In the field of high-end industrial fans, customers often mention European brands like Ebm-papst or Ziehl-Abegg. We acknowledge their first-mover advantage in technology, but in the emerging markets of China and the world in 2026, LONGWELL offers a more competitive value combination.

4.1 European Quality, Chinese Efficiency

· Technical Benchmarking: LONGWELL’s EC motor technology fully benchmarks against top international brands in energy efficiency (IE4/IE5) and control precision. Our LWEAF series explosion-proof parameters strictly follow international IECEx standard logic.

· Delivery Speed: International brands often have lead times as long as 16-20 weeks, which is unacceptable for emergency refinery maintenance (Turnaround). Relying on a strong local supply chain, LONGWELL can shorten the delivery period for standard products to 4-6 weeks, and deliver customized products within 8 weeks.

4.2 Deep Customization & Service

Unlike the standardized components of major manufacturers, LONGWELL is willing to provide “Drop-in Replacement” services.

· Voltage Customization: Providing special voltage levels for the petrochemical industry such as 660V/690V.

· Dimensional Matching: We can customize flanges according to the mounting holes of the customer’s old fans, ensuring “zero modification” for on-site installation and significantly reducing construction costs.

4.3 Global Certification System

For a brand to go global, certification is the passport. LONGWELL products not only comply with China CCC and explosion-proof certificates but also possess a full set of international certifications including UL, ETL, CE, and RoHS. Whether your project is in China’s Xinjiang oilfields or a refining center in the Middle East, LONGWELL guarantees compliant access.

Conclusion: Being Your Most Trusted “Air Steward”

In 2026, the petrochemical industry is bidding farewell to extensive growth and welcoming a new era of refinement, greenization, and intelligence. In this transformation, although fans are small, they leverage the operational quality of the entire factory through the two fulcrums of “Safety” and “Energy Efficiency”.

Ningbo Longwell Electrical Technology Co., Ltd. (LONGWELL) promises to guard your safety red line with the strictest explosion-proof standards and unearth your energy-saving potential with the most cutting-edge EC technology. We do not just sell fans; we deliver a commitment to “Green Petrochemicals”.

Next Steps:

· Planning an equipment update? Contact our Sales Team for a professional environmental application assessment.

· Worried about compliance with the new Safety Law? Contact us to get a copy of the LWEAF Explosion-proof Product Brochure.

· In 2026, Longwell will continue to participate in multiple industry exhibitions. We look forward to your visit to personally experience the perfect combination of “Silence” and “Power”.

Frequently Asked Questions (FAQ)

Q1: Are LONGWELL’s LWEAF explosion-proof fans suitable for Hydrogen environments (IIC level)?

A: The standard LWEAF series is certified as ExdII BT4, suitable for the vast majority of IIB gas environments like ethylene and propane. For extremely hazardous IIC gases like Hydrogen, we offer customized high-level explosion-proof solutions. Please contact our technical team directly for consultation.

Q2: What is the advantage of EC fans compared to AC fans controlled by inverters (VFD + AC)?

A: Although VFD + AC can also adjust speed, the efficiency of EC motors at low speeds is far higher than that of AC motors (AC motor efficiency drops sharply at low speeds). Furthermore, EC fans do not require the additional installation of bulky inverter cabinets and complex shielded cables. They are smaller in volume, have a lower comprehensive failure rate, and have almost zero maintenance costs.

Q3: Can your high-pressure fans be used for corrosive waste gas treatment?

A: Yes. For corrosive environments, we offer impellers and volutes with Teflon (PTFE) coatings or 316L Stainless Steel, combined with specialized shaft seal designs to effectively resist corrosion from acidic and alkaline gases.

Q4: Does LONGWELL provide on-site mapping and retrofit scheme design?

A: Yes. For equipment renewal projects in large-scale refining enterprises, LONGWELL possesses a professional technical support team capable of providing on-site mapping, aerodynamic performance verification, and energy-saving retrofit scheme design services.

Contact Us

· Official Website: www.longwellfans.com

· Email: sales@zjlongwell.com

· Address: (Please refer to the website for the specific address)