Gas Processing Equipment Pvt. Ltd. Bhosari, Pune, Maharashtra

Common impurities that can be removed from a gas stream include water, carbon dioxide, carbon monoxide, mercaptan, ammonia, methyl alcohol, ethyl alcohol, hydrogen sulphide, oxygenates, acetylenes, nitrous oxide, nitrogen dioxide, propyne and butyne. Some of these can be removed with the same adsorbent used for dehydration. For some, a separate adsorbent that can be regenerated, is filled in the same bed. Some of the impurities cannot be removed by regenerable adsorbents. Here a separate bed with "sacrificial" adsorbent is used (Guard Bed) and operated upto complete equilibrium. With a two bed system, the entire wet gas flows through the adsorption bed. Simultaneously, the bed in regeneration is being reactivated by flowing hot gases from various sources for a specific period of time. This is followed by a cooling phase. Depending on the flow rate, multiple beds are also used to keep adsorber size within manufacturing limits. The flow for adsorption is divided in two or more beds and one bed is regenerated. A single bed is taken into adsorption after regeneration and the time for adsorption per bed is determined by the regeneration time and the total number of installed beds.

Complete gas tightness, Oil-free operation as the diaphragm itself requires no lubrication Dryness of the gas is not a concern as there are no piston rings, Pressure ratio of 1:20 is achievable in a single stage, as temperature rise is low since the compressor does not operate close to isentropic adiabatic compression, allowing a greater variation in suction and discharge pressures, Two stages , duplex or special design, Ability to handle radioactive, toxic, explosive and corrosive gases, To achieve higher flow an oil free screw compressor can be offered as a feeder Capacity control is achieved by inlet pressure variation, by-pass, variable frequency drive or combination

The PSA hydrogen-unit consists of four or more adsorption towers. Each of these towers passes subsequently through the stages of pressure build up, adsorption and regeneration. By this a continuous supply of product gas can be achieved. The pressure build up is carried out in one or more steps.The tower in adsorption is switched over to regeneration. During this step,hydrogen enriched gas flows to another tower for the next adsorption step. The remaining part of the pressure build up is done with product gas. In the subsequent production step, feed gas is passed through the adsorption tower and hydrogen with very high purity leaves the tower.The regeneration is also done in several steps. After pressure equalization with the previously regenerated adsorption tower, the present adsorption tower is depressurized. This is followedby a purge step with a counter-current flow of hydrogen.In casethere is a high concentration of heavy hydrocarbons in the feed gas, a pre-filter system is integrated into the PSA-process.

Skid mounted gas conditioning packages for ensuring the quality of inlet (fuel) gases used in turbines and gas engines. These packages are generally designed for natural gas, coal bed methane. In some cases, they can also be designed to accommodate low calorific gases like coke oven gas , blast furnace gas. The design approach is based on process simulations to determine the condensing temperature ,hydrate formation temperature, water and constituent dew point before deciding the individual stages of cleaning and conditioning. Removal of all free liquids at the inlet of the turbine or the engine even with the variation of the inlet pressure and temperature of the gas