CH 304K 1st Edition Lecture 28 Outline of Last Lecture I. First Law of ThermodynamicsOutline of Current Lecture II. Current Energy SourcesA. CoalB. Oil (Petroleum)Current LectureCoal - Fossil remains of plant life- Millions of years old- No typical formula for coal; one common one is C135H96O9NS- Different grades of coal based on composition- All coal contains some Sulfur which produces SOX when burnt- Coal mining: expensive, dangerous- Risk of cave-ins, toxic gas leaks, respiratory issues (“Black Lung”)- The more Carbon in the coal, the more energy it will produce which means the higher the grade- “clean” coal: gas fluidization- gas fluidization: using finely powdered coal and blast in air to heat; combustion is more complete, lower temperatures are needed, can mix with powdered limestone to removesome of the sulfur- another “clean” coal idea: wet scrubbing- The US owns ¼ of the world’s coal reservesThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Oil (Petroleum)- It is a liquid, which means it is easier to extract, store, and transport- Cannot be used straight out of the ground- Complex mixture of different (mainly) hydrocarbons- There are different grades based on sulfur content (sweet vs. sour) and viscosity (heavy vs. light)- Contains very little sulfur compared to
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