Recovery of by-products: coal, Biology

Recovery of tar: the coke oven gas coming out from ovens is passed through a tower where liquid ammonia is sprayed. The tar and dust are removed and then recovered.

Recover of NH3: the gases are then passed through a tower in which water is sprayed. It is removed as ammonia hydroxide.

                                 NH3 + H2O  404_hydrocarbon.png  NH4OH

Instead Of Water, If Sulphuric Acid Is Sprayed, It forms Ammonium Sulphate Which Can Be Recovered.

                                 2NH4OH + H2SO4  404_hydrocarbon.png (NH4)2SO4 + 2H2O.

Recovery of Naphthalene:  after removal of nh3, the gases are passed through a cooling tower where water at low temperature is sprayed. Naphthalene and some condensed gases are recovered.

Recovery of benzene: it can be recovered by passing the gas through chamber where petroleum is sprayed.

Recovery of H2S :  the gas is passed through chamber containing moist Fe2O3, where it is recovered

                                 Fe2O3 + 3H2404_hydrocarbon.png Fe2S3 + 3H2O

                     Fe2O3 can be regenerated by treating Fe2S3 with air

                                 Fe2S3 + 4O404_hydrocarbon.png2FeO + 3SO2

                                 4FeO + O2 404_hydrocarbon.png 2Fe2O3

The coal gas is recovered and collected in a gas holder after passing through various chambers to removed the by- products. The calorific value of the gas is 5000 kcal/m3.

Posted Date: 7/12/2012 4:45:11 AM | Location : United States







Related Discussions:- Recovery of by-products: coal, Assignment Help, Ask Question on Recovery of by-products: coal, Get Answer, Expert's Help, Recovery of by-products: coal Discussions

Write discussion on Recovery of by-products: coal
Your posts are moderated
Related Questions
Competition - Processes in Succession The aggregation of individuals in an area leads to inter specific and intra specific competition. The competition is usually for

What are risk factors for diseases? Risk factors for a disease are everything that contributes to enhance the risk of the disease to appear. For instance, for most cardiovascul

Metaphase chromosomes: Each metaphase chromosomes is a duplicated structure which consists of two sister chromatids, attached at a point called centromere or primary constric

general cherecter and anatomical stucture


Flaws in Developmen of Human The human growth and development in spite of its complexity works perfectly most of the time. But while development goes awry it creates a giant

a - HELIX In this intra molecular hydrogen bonds are present The polypeptide chain is spirally coiled, generally in a clock-wise or right handed fashion. Glycine

Gene expression is controlled by chromatin state, _______ and _________. a. transcription factors and epigenetic regulators b. polymerases and control proteins c. delta and tau pro

Explain the Nutritional Factors that affecting food choice? Food choices made based on sound principles of nutrition will be conducive to good health while carelessness about n