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The amines are a solvent widely used in the removal of H2S and CO2 present in the natural gas. It is generally known as gas sweetening and acid gas remover.

Usually the H2S and CO2 absorb and react with amine in the absorption tower to then be sent to the regeneration tower. The regenerated amine then return to the absorption tower. The H2S and CO2 flashed the regeneration tower is sent to a thermal oxidizer to be destroyed. In the event that the amount of H2S is significant, this is normally sent to the sulfur recovery unit to recover sulfur as a byproduct.

The amines are a solvent widely used in the removal of H2S and CO2 present in the natural gas. It is generally known as gas sweetening and acid gas remover.

Usually the H2S and CO2 absorb and react with amine in the absorption tower to then be sent to the regeneration tower. The regenerated amine then return to the absorption tower. The H2S and CO2 flashed the regeneration tower is sent to a thermal oxidizer to be destroyed. In the event that the amount of H2S is significant, this is normally sent to the sulfur recovery unit to recover sulfur as a byproduct.

A ballistic piston apparatus is described briefly. The instruments in the apparatus and the associated external measuring circuits are discussed in detail. The differential equations which describe the energy and material transport in the axially-collapsing cylindrical sample-gas chamber are derived and solved numerically. Compressibility factors are calculated for nitrogen gas employing data obtained from two tests made on the ballistic piston apparatus. Temperatures in this investigation range from 2300° to 3300° R, and pressures from 1000 to 6300 pounds per square inch absolute.

A ballistic piston apparatus is described briefly. The instruments in the apparatus and the associated external measuring circuits are discussed in detail. The differential equations which describe the energy and material transport in the axially-collapsing cylindrical sample-gas chamber are derived and solved numerically. Compressibility factors are calculated for nitrogen gas employing data obtained from two tests made on the ballistic piston apparatus. Temperatures in this investigation range from 2300° to 3300° R, and pressures from 1000 to 6300 pounds per square inch absolute.

This thesis presents a study of the morphological changes that occur in selected coal chars during oxidation at low temperature (725K-875K) and at high temperature (1400K-1600K). Gas adsorption and mercury porosimetry were the primary means by which these changes were monitored. An attempt was made to relate the observed reactivity of the char in oxygen to the evolving porous structure of the char. Initial pore structure was varied by using three different raw coals: a lignite, a subbituminous and high volatile A bituminous coal. In the case of the bituminous coal, pore structure was varied further by using different pyrolysis temperatures. Of course, while there were differences in the physical structure of the chars, there were differences in the chemical structure as well. In order to account for this, the chemical nature of the chars was monitored, using elemental analysis and oxygen chemisorption.

This thesis presents a study of the morphological changes that occur in selected coal chars during oxidation at low temperature (725K-875K) and at high temperature (1400K-1600K). Gas adsorption and mercury porosimetry were the primary means by which these changes were monitored. An attempt was made to relate the observed reactivity of the char in oxygen to the evolving porous structure of the char. Initial pore structure was varied by using three different raw coals: a lignite, a subbituminous and high volatile A bituminous coal. In the case of the bituminous coal, pore structure was varied further by using different pyrolysis temperatures. Of course, while there were differences in the physical structure of the chars, there were differences in the chemical structure as well. In order to account for this, the chemical nature of the chars was monitored, using elemental analysis and oxygen chemisorption.