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Help CenterRotary Kiln for Coke Production 200 Tpd
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rotary kiln for coke production 200 tpd
1. Introduction
The 200 TPD (Tons Per Day) Rotary Kiln for Coke Production is a highly efficient thermal processing system designed for the calcination of raw coke (such as green petroleum coke) or the carbonization of specific coals.
With a daily output of 200 tons, this system is a vital link in the supply chain for the aluminum, steel, and graphite electrode industries. Its primary function is to subject raw carbon materials to high-temperature thermal treatment, driving off volatile matter, increasing real density, and significantly improving electrical conductivity to produce premium-grade calcined coke.
2. Working Principle
The processing of coke inside a rotary kiln is a continuous pyro-processing method based on a counter-current heat flow design. The system typically operates through the following sequential stages:
Material Feeding: Raw "green" coke or carbonaceous materials are continuously fed into the kiln tail (the elevated, cooler end of the slightly inclined rotating cylinder).
Preheating and Devolatilization: As the kiln rotates slowly, the coke rolls and moves downward toward the lower end (kiln head). In the preheating zone, moisture is evaporated. As temperature increases, the volatile matter within the raw coke begins to release as gas.
High-Temperature Calcination: The material enters the high-temperature zone, heated by a primary burner at the kiln head and the controlled combustion of the released volatile gases. This extreme heat shrinks the carbon structure, removes remaining hydrogen and sulfur fractions, and reorganizes the carbon into a crystalline form with high electrical conductivity and density.
Cooling & Product Discharge: The red-hot calcined coke drops from the kiln head into a rotary cooler. Water spraying or indirect air cooling rapidly lowers the temperature of the coke to under to prevent re-oxidation, making it ready for storage and transport.
3. Advantages
Optimized Capacity for Niche and Specialized Production: A 200 TPD capacity offers excellent operational flexibility. It is ideal for specialized carbon plant operations, independent oil refineries, or custom-grade graphite electrode manufacturers who require strict control over specific material batches.
Superior and Uniform Product Quality: The continuous, dynamic tumbling action of the rotary kiln ensures that every coke particle experiences identical thermal conditions. This guarantees uniform calcination, eliminating the risk of under-calcined cores and yielding coke with highly consistent real density and low electrical resistivity.
Highly Self-Sustaining Thermal Cycle: The volatile matter released by the raw coke during heating is flammable. Advanced rotary kiln systems are designed to burn these gases directly inside the kiln as a primary heat source. This drastically reduces the consumption of external fuels (like natural gas or heavy oil), delivering massive savings on energy costs.
Waste Heat Recovery: The high-temperature flue gas exiting the kiln tail can be directed to a waste heat boiler to generate steam or electricity, further maximizing the plant's overall energy efficiency.
Strict Environmental Integration: Modern configurations include advanced flue gas desulfurization (FGD), denitrification (DeNOx), and baghouse dust collection systems, ensuring that carbon dust and gas emissions easily satisfy modern environmental mandates.
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