Coal gas, Biology

Assignment Help:

When coal is carbonized coke is formed along with coal gas.

                            13000C

         Coal         679_coal gas.png                        coke + coal gas

                     In absence of air

Coal is taken in a silica retort and heated to 13000C in absence of air. The coal gas produced is passed through a hydraulic main to remove tar. Any tar or ammonia present in gas is removed by scrubbing with water. The colled gas is then scrubbed with creosote oil where, benzol, naphthalene etc. gets dissolves and removed. The sulphur compounds can be removed by passing the gas in a column of ferric oxide, which can be regenerated on exposure to air.

     Fe2O3 (S) = 3H2S (g)    679_coal gas.png   Fe2S3(S) + 3H2O(l)

Fe2O3 is regenerated by heating Fe2S3 in presence of air.

     2Fe2S3 (S) + 3O2 (g)  679_coal gas.png     2Fe2O3(S) + 6H2S(g)

The purified coal gas is finally stored over water in gas holder. The average composition of coal gas is

     CH4 =32%            H2 = 40%          CO = 7%          N2 = 4%

     C2H4 = 3%            C2H2 = 2%        CO = 1%

Calorific value as illuminant as a fuel. It provides reducing atmosphere in metallurgy.


Related Discussions:- Coal gas

Carbohydrates requirement in pectic ulcer, Q. Carbohydrates requirement in ...

Q. Carbohydrates requirement in pectic ulcer? Carbohydrates: These should provide around 55 to 65% of the daily intake. Emphasis - J should be laid on the consumption of 60th s

Define ecosystems science and large-scale ecology, Define Ecosystems scienc...

Define Ecosystems science and large-scale ecology? Many of today's most pressing problems are regional or global in nature including for instance, the effects of land cover and

Amoeba, AMOEBA Systematic  Position Amoeba  was discovered by  Rus...

AMOEBA Systematic  Position Amoeba  was discovered by  Russel von Rosenhoff in  1755. He  called it the little proteus  after the mythical  sea god who is believed to be c

Define nutritive aspects of food constituents, Define Nutritive aspects of ...

Define Nutritive aspects of food constituents and effect of processing and handling? Nutrient stability; effects on nutrients of agricultural practices, handling, processing an

Explain the role of pancreas in digestion, Role of Pancreas in Digestion ...

Role of Pancreas in Digestion Pancreatic  juices  secreted from  the  pancreas  aid  in  digestion  of  the  food. About 600-800  ml  of  fluid  i.e.  the  pancreatic juice  is

Types of hypertension, Types of hypertension are as follows: Essential ...

Types of hypertension are as follows: Essential Hypertension is called essential when no apparent cause is suspected or detected. This accounts for almost 90 per cent of pati

Introduction to cleavage, INTRODUCTIO N - Karl Von Baer - Coined th...

INTRODUCTIO N - Karl Von Baer - Coined the term cleavage. Swammerdom - First time seen cleavage. Prevost and Dumas - Reported cleavage of frog's egg. Spllanzani - Detail

Explain the maurice theory according to corneal transparency, Explain about...

Explain about the Maurice Theory according to corneal transparency. Maurice Theory: The uniform collagen fibrils are arranged in regular lattice pattern separated b

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