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

Risk analysis - animal studies, Animal studies Most toxicological data ...

Animal studies Most toxicological data for risk assessment are derived from the animal studies and  it  is, therefore, essential that these studies be conducted following widel

Explain what position of patient will during jvp examination, Explain what ...

Explain what Position of Patient will be During JVP Examination ? Position of Patient During JVP Examination: The patient is propped up to 45"on a back rest or pillow as in thi

Discuss the principle of osmolarity, These labs discuss the principle of os...

These labs discuss the principle of osmolarity, which is defined as the total number of solute particles in 1 L of solution. Is this the same thing as tonicity? Explain your answer

Methods by which diseases are transmitted, There are several methods by whi...

There are several methods by which a disease-causing organism can be transferred from the reservoir to the host organism. Direct contact : Disease - causing organism may be tr

Care of eyes, CAR E OF EYES - 1.       Eyes should be periodically exa...

CAR E OF EYES - 1.       Eyes should be periodically examined in children. 2.       While reading the paper should be held 36 cm. away from eyes and preferable at an angle

Ventricular septal defect might be cyanotic, A newborn baby with a patent f...

A newborn baby with a patent foramen ovale or a ventricular septal defect might be cyanotic (blue). Will a two-year-old with these defects also be cyanotic? Explain your answer.

Dietary management of oesophagitis, Q. Dietary Management fo oesophagitis? ...

Q. Dietary Management fo oesophagitis? Providing adequate nutrition support may require emphasis of different aspects during acute and chronic oesophagitis. In acute phase,

Tautomeric shifts, The original DNA sequence when ,transcribed and translat...

The original DNA sequence when ,transcribed and translated would yield five successive valine residues. But the altered sequence would correspondingly read one aspartate and four s

Tetanus, Tetanus This is an infectious, non-febrile disease of animals...

Tetanus This is an infectious, non-febrile disease of animals and man, and is characterised by spasmodic tetany and hyperaesthesia. The causative agent is Clostridium tetani,

Define adverse effect - itraconazole, Adverse Effects  The most common ...

Adverse Effects  The most common adverse effects of itraconazole are dose-related nausea and abdominal discomfort. Rash and serious hepatic toxicity can happen. The drug can ca

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