Carbonization process, Biology

Assignment Help:

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


Related Discussions:- Carbonization process

When the carbon dioxide concentration is increased, Why is the carbon dioxi...

Why is the carbon dioxide concentration a limiting factor of the photosynthesis process? When the carbon dioxide concentration is increased indefinitely is photosynthesis also incr

Preserving foods, One of man's oldest methods of preserving foods is drying...

One of man's oldest methods of preserving foods is drying or desiccation. The preservation of foods by drying is a direct result of removal of moisture. Microorganisms need water

Describe the concept of the gene, Through the year of 1960s, the gene was c...

Through the year of 1960s, the gene was clearly explained as the region of DNA which gives increase to a single polypeptide or to a one RNA for genes whose final product is RNA not

What are Modes of Nutrition, What is Nutrition? Explain types of nutrition?...

What is Nutrition? Explain types of nutrition? Nutrition - Taking Nutrients from environment Nutrients - Substances which are needed for the sources of chemical potential en

List the causes of implant failure, List the causes of implant failure due ...

List the causes of implant failure due to improper surgical technique and placement. Failure due to surgical techniques and improper placement: a) Off axis / severe angulati

What are the major morphological features of birds, Q What are the major mo...

Q What are the major morphological features of birds? Birds are animals that present aerodynamic bodies covered with feathers, pneumatic bones, anterior limbs transformed into

Analysis of developmental potency of nuclei, Analysis of Developmental Pote...

Analysis of Developmental Potency of Nuclei The instances given above and many other observations and experimental results of this nature provide tough support to the hypothes

How is litmus paper, How is litmus paper and testing for acid, base, and ne...

How is litmus paper and testing for acid, base, and neutral, related to biology?

Human physiology, Carbohydrates and proteins question #Minimum 100 words a...

Carbohydrates and proteins question #Minimum 100 words accepted#

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd