Selection of coal, Biology

Assignment Help:

Better coal should have following characteristics

(1)   It should have high calorific value.

(2)   It should have low moisture content.

(3)   It should have low ash  content

(4)   It should have high calorific intensity. (Calorific intensity-maximum temperature attainable on complete combustion of coal with theoretical amount of air.)

(5)   Size of coal should be uniform.

(6)   Coking quality should be high (coal on heating gives a coke which is porous, hard, strong. And  suitable for metallurgical needs, then the coal is known as caking coal)

(7)   It should have very low content of sulphur and phosphorous.        

 

 


Related Discussions:- Selection of coal

Sources of pollution, There are two main sources of pollution: (1). Nat...

There are two main sources of pollution: (1). Natural Sources:             (a) Volcanic ash             (b) Marsh gas (CH4) released from decay of organic matter.

Physiology of respiration, PHYSIOLOG Y OF RESPIRATION - 1 .      EXC...

PHYSIOLOG Y OF RESPIRATION - 1 .      EXCHANGE OF GASES - It is Haemotasis. It takes place in Alveoli between alveolar air and arterial cappilary by diffusion i.e., f

Hemicryptophytes - classes of life form, Hemicryptophytes - Classes of Life...

Hemicryptophytes - Classes of Life Form In this case the perennating buds or organs are situated at the soil surface where they are protected by soil and fallen leaves. These

Explain about bt reassessment, Will the plant-incorporated protectants rule...

Will the plant-incorporated protectants rules affect the Bt reassessment? No. To make sure that our biotechnology assessments reflect the latest data on health and ecological e

What is the fuction of starch, What is the fuction of Starch Starch is ...

What is the fuction of Starch Starch is the main thickener in gravies, sauces and puddings. Starch absorbs water, and  becomes a gel when cooked. As the starch swells up with w

Mechanism of movements, Normal 0 false false false EN-I...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Long-term responses - behaviour of plants, Long-term responses - Behaviour ...

Long-term responses - Behaviour of Plants Plants alter their course of development to suit the prevailing environmental conditions. For example, leaf maturation and fall, onse

What is weaning from mechanical ventilation, What is Weaning from Mechanica...

What is Weaning from Mechanical Ventilation? It is crucial to get the timing just right as to when to discontinue mechanical ventilation and extubate. If too early, this might

Define main gastric digestive enzyme, Q. Besides being fundamental for the ...

Q. Besides being fundamental for the activation of the main gastric digestive enzyme how does HCl also directly participate in digestion? With its corrosive effect HCl also hel

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