What parameters dictate how coal will behave inside a combustion furnace_______________________?
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Answer: C. the proximate analysis
Explanation
Proximate analysis measures moisture, volatile matter, fixed carbon, and ash, defining how coal ignites and burns. Combustion efficiency and flame stability depend directly on the volatile matter and fixed carbon proportions determined experimentally. Understanding ash content through proximate analysis helps predict slagging tendencies and overall furnace thermal performance. Proximate analysis is a standardized laboratory testing procedure used to characterize the quality and grade of solid fuels. Fixed carbon acts as the primary heat generator during the final solid-state char combustion phase inside the furnace. Volatile matter released early in the heating cycle dictates the ignition speed and flame length of the burning coal.
Option A covers only sulfur content, which relates to corrosion rather than general combustion behavior. Option B addresses ash and heating value, but omits volatile matter and fixed carbon measurements. Option D refers to ultimate analysis, which details elemental chemical composition rather than immediate combustion fractions.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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