APG treatment up to fuel gas requirements (GTPP, GPPP)

General inforamtion

GRASYS membrane hydrocarbon plants allow dramatically adjusting the properties of such gas through the removal of a large part of heavy hydrocarbons (C₄₊). Thereby, methane is mainly concentrated in the retentate with a 0.5–4.0 bar pressure drop against the feed flow pressure, which is especially important in fuel gas the treatment for GTPP. Additionally, membrane plants allow reducing the content of sulfur-bearing impurities in the fuel gas and completely excluding aerosols, condensed moisture and solid particles.

The degree of fuel gas treatment may vary significantly depending on the feed gas quality and the requirements set with regard to the product gas.

Application

The use of GRASYS membrane technology allows significantly improving fuel gas quality by

• Increasing the gas methane number (index) by 15–60 units
• Reducing the C₄₊ contents by 2.5–6 times, with the residual content of less than 2.0% vol.
• Reducing the C₅₊ contents by 6–12 times, with the residual content of less than 0.5% vol.
• Increasing the methane content by 8–20% vol., and in some cases by 35–40% vol.
• Reducing water dew point and hydrocarbon dew point by 15–60 °C

The use of GRASYS membrane technology ensures

• GPPP (GTPP) operation at 100% nominal capacity, with the power output increase by 15–40%
• Reduction in temperature of the delivered GPPP (GTPP) gas up to the minimum values (+10…+15 °C)
• Excluding the possibility of fuel detonation
• Recovery of product gas compliant with GOST 5542–87 and OST 51.40–93

Booklets and catalogues