Industrial Grade LPG is a refined hydrocarbon fuel composed primarily of propane (C₃H₈), butane (C₄H₁₀), or a controlled blend of both, produced during crude oil refining and natural gas processing.
Unlike domestic or commercial LPG, this grade is engineered for industrial systems that demand continuous operation, precise temperature control, stable flame characteristics, and high thermal efficiency.
It is widely used across manufacturing, metal processing, ceramics, glass, textiles, chemicals, food processing, and construction-related industries.
Chemical Composition & Quality Control
Primary Hydrocarbons
Propane: 30–80%
Butane: 20–70%
(Ratios adjusted based on process temperature and burner design)
Impurity Control
Sulfur compounds maintained at extremely low levels
Moisture and acidic gases removed to prevent corrosion
Olefins limited to ensure stable combustion
Odorization
Optional — industrial users may request odorized or non-odorized LPG
Industrial Grade LPG complies with strict industrial fuel specifications to ensure equipment compatibility and process reliability.
Key Characteristics of Industrial Grade LPG
High Calorific Value & Thermal Efficiency
Calorific value of 46–50 MJ/kg enables rapid heat release, high flame temperature, shorter heating cycles, improved productivity, and reduced fuel consumption.
Clean & Controlled Combustion
Produces negligible soot, ash, or smoke with very low SOₓ and particulate emissions, ensuring clean heat for precision industrial processes.
Stable Flame & Continuous Operation
Uniform vapor pressure and smooth flame profile support 24/7 industrial operation and high-load thermal systems with excellent controllability.
Easy Storage, Transport & Handling
Stored as a liquid under moderate pressure and supplied in industrial cylinders or bulk tanks, requiring less space than solid or liquid fuels.
Flexible Fuel Configuration
Propane-rich blends for high-temperature furnaces and cold locations
Butane-rich blends for controlled indoor heating and volumetric efficiency
Typical Mechanical & Technical Properties
| Property | Typical Value |
|---|---|
| Composition | Propane / Butane blend |
| Boiling Point Range | –42°C to –0.5°C |
| Vapor Pressure @ 20°C | 2 – 8 bar (blend dependent) |
| Liquid Density | 0.50 – 0.58 kg/L |
| Calorific Value | 46 – 50 MJ/kg |
| Flame Temperature | ~1,980°C |
| Flammability Range | 2% – 10% in air |
| Auto-Ignition Temperature | ~480 – 500°C |
| Storage State | Liquefied under pressure |
| Appearance | Colorless (odorized if required) |
Refining & Production Process
Crude Oil Refining
Recovered during atmospheric distillation and catalytic cracking processes
Natural Gas Processing
Separated from Natural Gas Liquids (NGLs) and fractionated into propane and butane
Purification
Removal of sulfur compounds, dehydration, and acid gas removal
Blending & Quality Testing
Propane–butane ratio adjusted to industrial specifications and tested for calorific value, vapor pressure, sulfur, and moisture content
Storage & Supply Formats
Industrial Cylinders
47 kg and 425 kg cylinders for medium-scale factories and mobile industrial equipment
Bulk LPG Supply
Delivered via tanker trucks and stored in horizontal or vertical tanks (above or underground), ideal for large manufacturing plants
Centralized Industrial LPG Systems
Piped LPG distribution with automated pressure regulation, safety interlocks, and flame monitoring
Applications of Industrial Grade LPG
Manufacturing & Heavy Industry
Industrial furnaces, kilns, boilers, thermic fluid heaters, foundries, and metal casting
Metal Processing
Cutting, brazing, soldering, forging, rolling mills, and surface treatment
Ceramics, Glass & Building Materials
Ceramic kilns, glass melting, brick and tile manufacturing
Textile & Paper Industry
Drying, curing, stenter machines, yarn processing
Chemical & Process Industry
Reaction heating, distillation, spray drying, polymer processing
Food & Agro-Processing
Baking ovens, roasters, dryers, dehydration plants
Advantages Over Conventional Industrial Fuels
| Fuel | Emissions | Control | Maintenance |
|---|---|---|---|
| Industrial LPG | Low | Excellent | Low |
| Diesel | High | Moderate | High |
| Furnace Oil | Very High | Poor | Very High |
| Coal | Extremely High | Poor | Very High |
Safety & Compliance
Designed to meet industrial safety standards with pressure relief valves, excess flow protection, flame arrestors, and gas detection systems.
Complies with IS / EN / ASTM LPG standards and factory, explosive, and occupational safety regulations.
Industrial Grade LPG delivers precise heat control, operational consistency, reduced environmental impact, and superior efficiency—making it an ideal replacement for diesel, furnace oil, and coal in modern industrial operations.