Explosion-Proof Crane Configuration for Chlor-Alkali Plants
In a nutshell: Kelude Heavy Industry provides crane configuration solutions for chlor-alkali and salt chemical plants, covering all four production stages—electrolysis, chlorine & hydrogen handling, hydrochloric acid synthesis, and flake/caustic soda production. The systems accommodate lifting capacities from 2 to 32 tons and spans from 10 to 30 meters, with a complete plant investment ranging from approximately $30,000 to $267,000. The electrolysis area is equipped with corrosion-resistant overhead cranes (5–16 t) featuring titanium alloy spreaders and PVC anti-corrosion coatings; the chlorine & hydrogen handling area uses explosion-proof cranes (Ex d IIB T4); the hydrochloric acid synthesis area is fitted with acid-resistant stainless steel cranes (10–20 t); and the flake soda packaging area employs stainless steel dustproof electric hoists (2–5 t). These configurations address the extreme operating conditions of chlor-alkali chemical processing, including severe corrosion, explosion hazards, and high temperatures.
Crane Configuration Solutions for Chlor-Alkali & Salt Chemical Plants
Electrolysis Stage | Chlorine & Hydrogen Handling | Hydrochloric Acid Stage | Flake/Caustic Soda
Chlor-alkali chemical processing presents one of the harshest environments in the chemical industry, combining severe corrosion (chlorine gas, hydrochloric acid, caustic solutions) with explosion hazards (hydrogen gas).
Scenario 1: Electrolysis Stage
• Lifting capacity 5t–20t, explosion-proof LH/LD type
• Chlorine corrosion-resistant / brine-resistant coating
• Electrolytic cell maintenance
• Explosion-proof Ex d IIB
• Stainless steel / corrosion-resistant
• Kelude supplies chlorine-resistant coating
Chlorine Corrosion Protection | Electrolytic Cell Maintenance | Brine Environment
Scenario 2: Chlorine & Hydrogen Handling
• Lifting capacity 10t–32t, explosion-proof QD type overhead crane
• Hydrogen explosion-proof Ex d IIC
• Severe chlorine gas corrosion
• Titanium / stainless steel construction
• Variable frequency inching / anti-sway control
• Kelude supplies titanium corrosion protection
Hydrogen IIC | Chlorine Corrosion Protection | Titanium & Stainless Steel
Scenario 3: Hydrochloric Acid Stage
• Lifting capacity 3t–10t, corrosion-resistant hoist
• Severe hydrochloric acid corrosion C5
• 316L stainless steel lifting spreader
• Synthesis furnace maintenance
• Sealed leak-proof design
• Kelude supplies 316L hoists
Hydrochloric Acid C5 | 316L | Synthesis Furnace Maintenance
Scenario 4: Flake/Caustic Soda Production
• Lifting capacity 5t–16t, LD type / hoist
• High-temperature caustic / corrosion-resistant
• Evaporator maintenance
• Caustic soda packaging line
• Stainless Steel / alkali-resistant
• Kelude supplies alkali-resistant Stainless Steel
Alkali-Resistant High-Temp | Evaporator Maintenance | Stainless Steel
Selection Parameters: Four-Zone Comparison
| Parameter Item | Electrolysis Section | Chlorine & Hydrogen Treatment | Hydrochloric Acid Section | Flake Caustic Soda/Solid Caustic Soda |
|---|---|---|---|---|
| recommended model | Explosion-proof LH/LD Type | Explosion-proof QD type overhead crane | Anti-corrosion Electric Hoist | LD Type/Electric Hoist |
| Lifting Capacity | 5t~20t | 10t~32t | 3t~10t | 5t~16t |
| Explosion Protection Class | Ex d IIB | Ex d IIC | General/Anti-corrosion | General/Alkali-Resistant |
| Corrosion Medium | Brine/Chlorine Gas | Chlorine Gas/Hydrogen Gas | Hydrochloric Acid C5 | High-Temperature Caustic Liquor |
| Kelude Solution | Chlorine Gas Anti-corrosion+Explosion-proof | Hydrogen Gas Explosion-proof+Titanium Material | 316LStainless Steel | Stainless Steel Alkali-Resistant |
Electrolysis & Chlorine-Hydrogen Handling
The electrolysis section faces dual hazards: brine corrosion from saltwater electrolytes and hydrogen explosion risks, while the chlorine-hydrogen handling area contends with severe chlorine gas corrosion and IIC-rated hydrogen explosion hazards. Kelude holds both Ex d IIC explosion-proof and C5 anti-corrosion certifications.
For crane configurations in the electrolysis section, Kelude Heavy Industry addresses the combined risks of chlorine gas and hydrogen generated during brine electrolysis with titanium alloy composite lifting spreaders and Ex d IIC T3 flameproof electric hoists. The electrical control box uses a pressurized enclosure explosion-proof design (Ex px IIC T3), with nitrogen maintained at a slight positive pressure inside. Crane rails in the chlorine-hydrogen handling area are protected with FRP (fiberglass-reinforced plastic) cladding to prevent chlorine corrosion of the steel rail. The complete crane system carries national explosion-proof certification and C5-M anti-corrosion certification, ensuring stable long-term operation in corrosive environments with chlorine concentrations up to 50 ppm and temperatures up to 60°C. Kelude recommends annual explosion-proof electrical system inspections and anti-corrosion coating thickness measurements for electrolysis workshops.
Hydrochloric Acid & Caustic Soda Flakes
Hydrochloric acid service requires 316L lifting spreaders with C5 anti-corrosion protection. Caustic soda liquor at high temperatures of 80–100°C demands protection against caustic embrittlement corrosion.
Cranes in the hydrochloric acid synthesis area must withstand dual corrosion from both hydrochloric acid and hydrogen chloride gas. Kelude Heavy Industry employs SUS316L stainless steel main structures with PTFE lining as the protection solution. In the caustic soda concentration and evaporation section, where temperatures reach 80–100°C and caustic concentrations range from 32% to 50%, caustic embrittlement corrosion is a real risk. Kelude addresses this with 304 stainless steel main structures combined with a caustic-embrittlement stress relief heat treatment process. The electric hoists use alkali-resistant wire rope, and the brakes are made of corrosion-resistant stainless steel. Both sections are equipped with dual operation modes—radio remote control plus operator cabin—to meet the needs of both routine operations and precision work during major overhauls.
Kelude Heavy Industry: Chlor-Alkali Crane Solutions & Service Advantages
Kelude Heavy Industry has specialized in lifting solutions for the chlor-alkali and salt chemical sectors for many years, supplying corrosion-resistant, explosion-proof crane solutions to numerous chlor-alkali chemical parks and salt chemical production bases across China. Our product coverage spans the full production chain—electrolysis workshops, chlorine-hydrogen handling, hydrochloric acid synthesis, and caustic soda flake packaging—with complete manufacturing capabilities for C5-M grade anti-corrosion design and Ex explosion-proof certification.
