Chemical Engineering Exam > Chemical Engineering Questions > Smoke is produced due toa)insufficient supply...
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Smoke is produced due to
- a)insufficient supply of combustion air and insufficient time for combustion.
- b)poor quality of fuel and improper mixing of fuel & combustion air.
- c)poor design & overloading of furnace.
- d)all (a), (b) and (c).
Correct answer is option 'D'. Can you explain this answer?
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Smoke is produced due toa)insufficient supply of combustion air and in...
Causes of Smoke Production
- Insufficient supply of combustion air and insufficient time for combustion: When there is not enough air for the fuel to burn completely, smoke is produced as a byproduct of incomplete combustion.
- Poor quality of fuel and improper mixing of fuel & combustion air: Low-quality fuel or improper mixing of fuel and air can lead to inefficient combustion, resulting in the generation of smoke.
- Poor design & overloading of furnace: If the furnace is not designed properly or if it is overloaded, it can lead to incomplete combustion and the production of smoke.
Solution
- Ensure an adequate supply of combustion air to facilitate complete combustion.
- Use high-quality fuel and ensure proper mixing with combustion air.
- Regular maintenance of the furnace to prevent overloading and ensure efficient operation.
By addressing these factors, one can reduce or eliminate the production of smoke in combustion processes. It is essential to maintain optimal conditions for combustion to minimize environmental pollution and ensure efficient energy utilization.
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Smoke is produced due toa)insufficient supply of combustion air and in...
Understanding Smoke Production in Combustion Processes
Smoke is a common byproduct of combustion, and its generation can be attributed to several factors. Here, we explore the reasons outlined in options (a), (b), and (c), which collectively lead to smoke production.
Insufficient Supply of Combustion Air
- Incomplete combustion occurs when there isn't enough oxygen available.
- This can lead to the formation of carbon monoxide and unburned hydrocarbons, which contribute to smoke.
- Additionally, insufficient time for combustion can mean that fuel does not fully oxidize.
Poor Quality of Fuel
- Low-quality fuels often contain impurities that do not combust completely.
- Such fuels may produce soot and other particulates when burned, resulting in smoke.
- Improper mixing of fuel and air can also lead to localized areas of inefficient combustion, producing smoke.
Poor Design & Overloading of Furnace
- A furnace that is poorly designed may not facilitate optimal airflow, leading to incomplete combustion.
- Overloading a furnace can create conditions where fuel is packed too tightly, preventing adequate air circulation.
- Both factors can lead to an increase in smoke output due to inefficient combustion processes.
Conclusion
In summary, smoke production can be attributed to a combination of insufficient combustion air, poor fuel quality, improper mixing, and design flaws. Therefore, the correct answer is option 'D', as all these factors contribute to the generation of smoke in combustion processes. Addressing these issues is critical for improving combustion efficiency and minimizing smoke emissions.
Smoke is a common byproduct of combustion, and its generation can be attributed to several factors. Here, we explore the reasons outlined in options (a), (b), and (c), which collectively lead to smoke production.
Insufficient Supply of Combustion Air
- Incomplete combustion occurs when there isn't enough oxygen available.
- This can lead to the formation of carbon monoxide and unburned hydrocarbons, which contribute to smoke.
- Additionally, insufficient time for combustion can mean that fuel does not fully oxidize.
Poor Quality of Fuel
- Low-quality fuels often contain impurities that do not combust completely.
- Such fuels may produce soot and other particulates when burned, resulting in smoke.
- Improper mixing of fuel and air can also lead to localized areas of inefficient combustion, producing smoke.
Poor Design & Overloading of Furnace
- A furnace that is poorly designed may not facilitate optimal airflow, leading to incomplete combustion.
- Overloading a furnace can create conditions where fuel is packed too tightly, preventing adequate air circulation.
- Both factors can lead to an increase in smoke output due to inefficient combustion processes.
Conclusion
In summary, smoke production can be attributed to a combination of insufficient combustion air, poor fuel quality, improper mixing, and design flaws. Therefore, the correct answer is option 'D', as all these factors contribute to the generation of smoke in combustion processes. Addressing these issues is critical for improving combustion efficiency and minimizing smoke emissions.
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