LPG RECOVERY UNIT BASIS OF DESIGN

[...]... PROCESS ENGINEERING Stream Origin / Destination Feeds Off-gas Off-gas Tail Gas Off-Gas 3550-8110-PD-011-0001 PAGE 12 OF 12 REV D1 Temp (°C) Pressure (kPag) From CDU GasOil HDS Unit HCDS Unit (PSA) Kero HDS Unit 55 49 30 51 27 27 27 27 Off-gas Off-gas Off-Gas Naphtha HDT Unit Residue HDS Unit InAlk Unit 37 48 44 330 330 330 Off-gas Off-gas Flash Gas Off-Gas SWS (Train 1, Flash Drum) RFCC (Rich Amine Flash...A LPG RECOVERY UNIT BASIS OF DESIGN 4.5.17 FOSTER WHEELER ENERGY LTD PROCESS DOCUMENT PROCESS ENGINEERING 3550-8110-PD-011-0001 PAGE 11 OF 12 REV D1 LPG Water Wash The net LPG product from the Debutaniser overheads is routed to the LPG Amine Absorber for hydrogen sulphide removal In order to meet the LPG amine content (dissolved & entrained) required by the Saturated LPG Treatment Unit (012)... Miscellaneous Sources 55 47 68 46 10 10 10 10 Mixed LPG (1, 2) LPG Treatment Unit 41 1600 Naphtha (3) Naphtha Naphtha CDU Naphtha HDT Unit Residue HDS Unit 55 40 39 1200 1200 1200 Lean Amine Amine Regen Unit 55 1330 Products Off-gas Mixed LPG C3 LPG C4 LPG Stabilised Naphtha Stabilised Naphtha To Fuel Gas Collection System LPG Treatment Unit Storage Storage Naphtha HDT Unit Storage 43 42 42 42 75 42 507 1389 1900... (012) Licensor, the LPG is routed to a two-stage water wash system Each stage includes a LPG amine wash water mixer and downstream LPG amine wash water drum with coalescer The design of the mixer and coalescer in each stage effectively determine the efficiency of the water wash process and an integrated design shall be provided by the Contractor/Vendor(s) 4.5.18 Off-Gas Cooling The Off-Gas Amine Absorber... backpressure that may be imposed at the LPGRU battery limits by the downstream system Contractor shall ensure that the LPGRU can deliver products at up to this pressure at all times, and also that the LPGRU can control satisfactorily throughout the entire operating range, should a lesser backpressure be imposed 3550-8110-PD-011-0001.DOC DSN:482 A LPG RECOVERY UNIT BASIS OF DESIGN FOSTER WHEELER ENERGY LTD... absorption of hydrogen sulphide into the MDEA solvent relatively more difficult (i.e higher pressure favours absorption) In order to improve the absorption process, an Off-Gas Trim Cooler is provided to lower the absorber operating temperature (i.e lower temperature favours absorption) 5 BATTERY LIMIT CONDITIONS The design of the LPGRU shall allow the reception of feeds from, and the delivery of products... Storage Naphtha HDT Unit Storage 43 42 42 42 75 42 507 1389 1900 1000 450 600 Rich Amine Sour Water Amine Regen Unit Sour Water Stripper 56 45 350 300 Notes: 1 After mercaptans removal 2 Includes LPG from CCR Platforming Unit 3 Includes unstabilised naphtha from Kerosene HDS (Unit 013) & GO HDS (Unit 014) 3550-8110-PD-011-0001.DOC DSN:482 . From Off-gas CDU 55 27 Off-gas GasOil HDS Unit 49 27 Tail Gas HCDS Unit (PSA) 30 27 Off-Gas Kero HDS Unit 51 27 Off-gas Naphtha HDT Unit 37 330 Off-gas Residue HDS Unit 48 330 Off-Gas. The Unit is capable of operating at a maximum turndown ratio of 50% of design feed throughput while meeting the product specifications. LPG RECOVERY UNIT BASIS OF DESIGN A FOSTER WHEELER. LPGRU are: - 45.8 Tonnes/h of Off-Gas - 234.0 Tonnes/h of Naphtha In addition the flow of unstabilised LPG from the CCR Platforming Unit is: - 8.9 Tonnes/h of LPG 4.3.4 Turndown The Unit