الفهرس 
Introduction of Natural Gas HistoryOnly 14 pages are availabe for public view
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Abstract
As a result of the development of various gas discoveries in different areas all over Egypt, the local and international market demand for petrochemical feed stocks had been increased Due to the vital rule that commercial propane plays in the petrochemical industry such as propylene and polypropylene manufacturing, new natural gas liquids (NGL) plants in Egypt are designed to produce the commercial propane with high recovery percentage to be used as a feed stock for the petrochemical plants in Egypt or to be exported Modeling of existing current operated plant El-Wastani Petroleum Company (WASCO) owns and operates El-Wastani network of wells and gathering system in the Nile Delta area of Egypt. The gas stream from wells directed to a central processing facility (CPF), located at El-Wastani-1 (EW1) well site The CPF has been built in three phases.
• Phase-I was an initial separation facility for about 40 MMscfd gas from water and condensate • Phase-II was a 150 MMscfd JT plant and sales gas compressors to compress gas to national gas network.
• Phase-III was an expansion to160 MMscfd with mechanical refrigeration and condensate stabilization units for the first stage operation followed by a turbo expander and LPG liquid recovery train with a de-ethanizer and a de-butanizer for the second stage operation Both stages were commissioned in 2006 and utilized the sales gas compression provided in Phase-II Phase-III project was originally designed to process 160 MMscfd of feed gas (Its Molecular weight= 19.13) and 4000 Bbls/day as raw condensate (CGR 25 Bbls/MMscfd) to produce 245 ton/day LPG product to the local market, 5000 Bbls/day stabilized condensate and 153 MMscfd sales gas to the Egyptian national gas grid >It is of great importance in retrofitting the process equipment for New Products Extraction, Commercial Propane (Propane Extraction In this work the steady state modeling program – Aspen HYSYS – was used in modeling an existing LPG plant to produce commercial propane product as an additional product to the LPG plant with high propane recovery percentage and to increase the current butane recovery percentage. Ortloff’s Single Column Overhead Recycle (SCORE) process is proposed as a cryogenic gas processing technology used within the simulation model for the recovery of propane and heavier hydrocarbons from a natural gas stream.De-Bottle Study on The Plant To Increase Capacity To Reach 200 MMscfd And Maximize LPG Production In this work the steady state modeling program – Aspen HYSYS – was used in modeling an existing LPG plant to revamp it for higher handling capacity and improve the LPG recovery .Re-run the simulation for the original plant to higher capacity 200 MMscfd, Showed capability of some equipment to handling higher capacity and other equipment showed constrains due to the original small design margin.In this simulation a use of the maximum cooling temperature Ethylene glycol can reach in the mechanical refrigeration unit MRU-1. Upstream the mole sieve dehydration unit without freezing starts by using larger compressors that lead to increase the cooling temperature from -11 C to -29 C (limitation of carbon steel material) to improve the LPG recovery.An economic evaluation was performed for the two options of the new proposed plant to ensure rapid return of investment and good profitability over the expected lifetime in case of maximizing commercial propane production rate or revamped the plant to higher capacity production rate depends on the local market demand and it was remarkable that the new retrofitted plant has a great value from the economic point of view as the total capital investment will be paid back within less than six months so the new retrofitted plant will achieve high and rapid return on investment (ROI