Rational Use of Natural Gas Differential Pressure Energy

As part of PJSC Gazprom's energy-saving policy of increasing energy efficiency of subsidiaries and organizations through the use of innovative technologies and energy equipment, the expediency of replacing throttling devices used for low pressure gas treatment (fuel, starting gas) for own needs of gas treatment units for transportation (GTP) with expander unit was considered. The proposed method of fuel gas preparation will make it possible to generate an additional amount of environmentally clean, "green" energy, thereby reducing operating costs and increasing the energy efficiency of the entire plant. The article presents a comparative analysis of the isoenthalpic and isoentropic gas expansion using different devices. The presented gas expansion models are performed in the specialized chemical engineering systems modeling software HYSYS (AspenTech) and allow to estimate the pressure drop energy.