what gases smoke consists of and can they be used as fuel for engines? or any other thing?

Question

pls explain more detail cause i am only 13years

Answer 1

I've run a Stirling engine on gassified wood. The gas looks and smells like smoke but is produced by burning wood without much air. Burning without enough air usually produces carbon monoxide, which is combustible and can be used as a fuel for heat engines.

However, most of the smoke you'd get from a normal fire isn't combustible and can't be used as a fuel.

Answer 2

When you see gases coming out of a smoke stack or the exhaust pipe of your car, or out of a chimney, they are waste products produced in a chemical reaction. Most often this chemical reaction is called combustion, or burning. When you burn something, you react carbon with oxygen or air. If the burning or combustion is complete, you get only carbon dioxide and usually water as the products. These are what you see as "smoke". If the smoke is dark, it means that you have not burned everythiing and you have carbon products that have not been reacted.

Technically, you can extract some energy value from the dark type of smoke. However, it would require adding lots of oxygen, and heat to get 100 percent combustion.

This would cost more money than the energy is worth.

In some cases, you will find that the smoke contains small amounts of things that are dangerous, and so additional equipment is sometimes added to help destroy the bad components of the smoke.

A good example of where a piece of equipment has been added to complete the burning or combustion process is the "catalytic converter" in your car. When gasoline is burned in the car, it produces both carbon dioxide and carbon monoxide. The carbon monoxide is burned to carbon dioxide by passing the exhaust stream over a platinum catalyt that helps to get 100 percent burning of all the carbon in the gasoline.

One more possibility of getting energy from exhaust gases is to use the heat energy that is stored in the hot gases. This can be used to heat water or air. This is quite common in industry, and helps save a lot of oil that would otherwise be used to produce the heat for some processes. Again there is a trade off of how much does the heat recovery equipment cost, and how much is the heat energy worth.

Answer 3

The total consistency of smoke depends on what is burned. In general there is carbon dioxide, water, carbon monoxide if there was little oxygen when the burning occurred, There are particles in smoke that makes it visible.There can be many poisons and pollutants.They are the waste products and not usable for fuel.