CUM 301 Petroleum Cglkklhemistry - Notes Summary

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  • CUM 301 Petroleum Chemistry: Course overview by Dr. Ayur, Date: 13-FEB-24

  • Petroleum Composition:

    • Fossil fuels formed from prehistoric organic matter, taking millions of years to decompose underground.

    • Classified as liquid (oil) or gaseous (natural gas).

    • Hydrocarbons (C and H) are key components.

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  • Uses of Oil:

    • Fuels: Gasoline (naphtha), diesel for vehicles; medium oil for larger machines.

    • Heavy oil as raw material for chemicals and plastics.

  • Natural Gas Composition:

    • Mainly methane (CH₄), colorless and odorless; has environmental advantages over other fuels.

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  • Distribution of Natural Gas:

    • Used in households as city gas; also in industries and power generation.

  • Origin of Oil & Natural Gas:

    • Formed over millions of years from organic materials.

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  • Formation Process:

    1. Accumulation of dead organic matter.

    2. Transformation into kerogen in source rocks over time.

    3. Kerogen turns into oil/natural gas under heat and pressure.

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  • Petroleum Products Derived from Crude Oil:

    1. Petrol: Largest product from crude oil.

    2. Diesel: Mixture of hydrocarbons, boiling point 150-380 °C.

    3. Jet Fuel: Accounts for about 10% of crude oil.

    4. Kerosene: Common in aviation; clear liquid from hydrocarbons.

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  • Other Products:

    1. Paraffin: A refined version of kerosene.

    2. Heavy Fuel Oil (HFO): Residual product from refining processes.

    3. Liquefied Petroleum Gas (LPG): Used for cooking and heating.

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  • Petrochemicals:

    • Derived from refining petroleum; main categories include:

    • Olefins (e.g., ethylene, propylene).

    • Aromatics (e.g., benzene, toluene).

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  • Sediments and Sedimentation:

    • Sediments are solid materials moved by erosion.

    • Settling results in sedimentary rock formation.

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  • Types of Sedimentation:

    1. Discrete Settling: Sand and grit particles.

    2. Flocculation: Particles clumping together.

    3. Zone Sedimentation: Concentrated particle settling.

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  • Petroleum Refining Process:

    • Conversion of crude oil into valuable products.

    • Steps: Separation, Conversion, Treatment.

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  • Breakdown of Refinery Products:

    • Crude oil provides diverse products (e.g., gasoline, LPG).

    • Primary sources of energy: Petroleum (38.8%), Natural Gas (22.9%), Coal (26.6%).

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  • Refinery Process Overview:

    • Uses fractional distillation and chemical conversion.

    • Focus on producing fuels and necessary materials for combustion engines.

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  • Detailed Refinement Processes:

    • Distillation separates crude oil into fractions.

    • Conversion processes like cracking and reforming create lighter hydrocarbons.

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  • Final Products from Refining:

    1. Liquefied Petroleum Gas (LPG): Domestic use.

    2. Gasoline: Production from fractions.

    3. Kerosene: Fuel for jets.

    4. Heavy Oils: For lubrication and industrial use.

    5. Residues: Useful for road making and other applications.