Carbonization process, Biology

When coal is heated strongly in absence of air, it forms a strong, porous, dense and coherent mass known as coke. This process of conversion of coal into coke is called carbonzation.

(Note: The coal on carbonization becomes soft, plastic and fuse together to a large coherent mass, they are called caking coals. Such coals are difficult to be oxidized. If the coke obtained is porous, hard, strong and usable for metallurgical purposes, then the coal is known as coking coal.)                            

Steps involved in carbonization process

                                                                   904_carbonization.png

                                                                            Hydrogen is eliminated

                                                                                            ~8000C

                                                            Formation of plastic mass, evolution of gases

                                                                                              9000C

                                                                            Coke is formed by

                                                            Solidification of plastron, foam like mass              

There are two types of carbonization.

1.      Low temperature carbonization.

2.      High temperature carbonization.   

1.11.1 Low temperature carbonization

When the carbonization is carried out at 500-7000C, that it is called low temperature carbonzation. The coke contains 5-15% volatile matter and cannot be used for metallurgical processes. It ignites easily and is used in domestic usages. Coke obtained is smokeless and the byproduct gas obtained has high calorific value (6500-9500kcal/m3).

1.11.2 High temperature carbonization

When carbonization is carried out at 900-12000C, it is called high temperature carbonization. The coke produced has high strength, purity, hardness, desired porosity, and is used for metallurgical purposes. Coke obtained has low volatile matter (1 - 3 %) and the byproduct gas obtained has low calorific value (5400-6000 (kcal/m3).

 

1939_carbonization1.png

Posted Date: 7/12/2012 4:33:51 AM | Location : United States







Related Discussions:- Carbonization process, Assignment Help, Ask Question on Carbonization process, Get Answer, Expert's Help, Carbonization process Discussions

Write discussion on Carbonization process
Your posts are moderated
Related Questions

Handling : The desire for survival is same whether in animals or human beings. You may be aware of the ability of even tiny animals to scratch and bite. So we won't say any more o

The nerve centres which control the body temperature and the urge for eating recontained in: 1.  Hypothalamus 2. Pons 3. Cerebellum 4. Thalamus Hypothalamus is the

Explain water Universal Solvent ? Water - Universal Solvent :  Water is usually referred to as the "universal solvent." because it is able to dissolve many different substan

What does it mean when a plasmid is cleaved with Hind III and Sca I? Does that mean that it opens up at those two locations and I have to insert whatever is complementary to it?

Carbohydrates Fifty five to seventy per cent of the required energy in animals is derived from carbohydrates. However, fats and proteins can also be broken down and used for

Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 1.40 µC charge.

Write up your own Matlab program to do the job described by Show">http://www.avatar.se/molbioinfo2001/dynprog/adv_dynamic.html Show a few examples, your code does work. You wil

How CPHs produce fermions? Answer- For understanding how CPHs is can produce fermions, do consider to electromagnetic, when the wavelength is growing. It's a CPH So CPH is a ti

Define about the Food Production? We know that agriculture comprises the major source of food production. This is very true in a country like ours where the majority of the pop