Gujarat's rubber and plastics manufacturing sector — spanning Rajkot (automotive rubber parts), Vadodara (industrial rubber), and Ahmedabad/Vapi (plastics compounding) — uses significant thermal energy for vulcanization, moulding, and forming processes. Biomass pellets are an increasingly viable fuel for this sector's steam and hot-air needs.
Key Applications
Vulcanization: Rubber vulcanization requires steam at 150–180°C (6–10 bar). This is standard operating territory for any biomass-fired fire-tube boiler. The consistent steam pressure from pellet combustion (vs. fluctuating FO burners) actually improves vulcanization cycle consistency.
Injection moulding barrel preheating: Plastics injection moulders use electric or oil-fired barrel heaters. A central biomass steam header supplying heat exchangers for barrel preheating can reduce per-unit electricity consumption by 30–40% for large moulding shops.
Thermoforming ovens: PET, ABS, and PP thermoforming requires oven temperatures of 150–250°C — achievable with biomass hot-air generators (HAGs) that deliver heated air directly to process ovens.
Rubber reclaiming devulcanizers: Rubber reclaiming units use autoclaves at 180–200°C steam — a perfect application for biomass boilers.
Why Rubber & Plastics Units Switch
The primary driver is furnace oil price volatility. FO prices in Gujarat have ranged from ₹55/litre to ₹78/litre over the past 24 months — a 42% swing that wreaks havoc on fuel budgeting. Biomass pellets at ₹9–₹11/kg have shown far more price stability, and their cost per useful Kcal is 2.5–3× lower than FO.
Getting Started
For rubber and plastics units currently on FO boilers, the switch to biomass requires a new biomass-capable fire-tube boiler or a biomass hot-air generator for direct process heating. Capital cost: ₹8–₹20 lakh depending on capacity. Typical payback at 100 MT/month equivalent FO: 12–18 months.
BBI can connect you with boiler OEMs experienced in FO-to-biomass conversions.