Coal burning causes increase in CO2 and also level of soot, dust and NOx and SOx increases in the atmosphere. Thermal power plants are strategically located near big cities to avoid high transmission losses and burning of coal results in high pollution near main cities of the Globe resulting in high pockets of Pollution. These pockets eventually cause major climatic disturbances also acid rain. Thermal gradients introduced cause low pressure in specified areas of earth and air from the colder zones rush towards these low pressure areas causing major typhoons. There arises few questions:

CO2 (carbon dioxide) is converted by plants into O2 (oxygen) and certain level of CO2 is essential for the crops

High levels of CO2 result in bad health of the residents as well cause green house effects

A balance has to be maintained by taking measures and advanced monitoring of these levels. Atmospheric data so generated requires corrective actions in time at various places of earth.

Coal Gasification:

Coal gasification can be used to produce Syngas, a mixture of carbon monoxide (CO) and hydrogen (H2) gas. This Syngas can then be converted into transportation fuels like gasoline and diesel through the Fischer-Tropsch process. The Fischer-Tropsch process involves a variety of competing chemical reactions, which lead to a series of desirable products and undesirable byproducts. The most important reactions are those resulting in the formation of alkanes. Most of the alkanes produced tend to be straight-chained, although some branched alkanes are also formed. In addition to alkane formation, competing reactions result in the formation of alkenes, as well as alcohols and other oxygenated hydrocarbons. Usually, only relatively small quantities of these non-alkane products are formed, although catalysts favoring some of these products have been developed.

Gasification, in fact, may be one of the most flexible technologies to produce clean-burning hydrogen for tomorrow's automobiles and power-generating fuel cells. Hydrogen and other coal gases can also be used to fuel power-generating turbines, or as the chemical "building blocks" for a wide range of commercial products.

The heart of a gasification-based system is the gasifier. A gasifier converts hydrocarbon feedstock into gaseous components by applying heat under pressure in the presence of steam.

A gasifier differs from a combustor in that the amount of air or oxygen available inside the gasifier is carefully controlled so that only a relatively small portion of the fuel burns completely. This "partial oxidation" process provides the heat. Rather than burning, most of the carbon-containing feedstock is chemically broken apart by the gasifier's heat and pressure, setting into motion chemical reactions that produce "syngas." Syngas is primarily hydrogen and carbon monoxide, but can include other gaseous constituents; the composition of which can vary depending upon the conditions in the gasifier and the type of feedstock.

Recom Systems provides consulting services in Coal gasification and Clean coal process technologies.