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PT Perta-Samtan Gas facilities are designed to extract the optimum amount of natural gas liquids from a combination of gas sources available at the existing SKG-10 Prabumulih Barat gas metering station. An NGL Extraction Plant, which will be located adjacent to the SKG-10 metering station, will provide the means for extracting the natural gas liquids from the pipeline gases. Following extraction, lean gas will be returned to the metering station and extracted liquids will be transferred to a Fractionation plant which will be located in the Pertamina Plaju / Sungai Gerong refinery, designation RU III at Palembang. A buried pipeline approximately 87kms in length will transport the liquids to the refinery. At the refinery the liquids are fractionated and stored with ship loading facilities installed at an existing jetty that will be refurbished as part of the project scope.
A flow scheme has been developed to process 250 MMscfd of feed gas, producing 546 M. tons/day of LPG, 225 M. tons/day of condensate and 160 M. tons/day of excess propane.
The extraction plant at Prabumulih Barat is designed to be totally self-reliant by necessity in the provision of all utility systems, with the only systems crossing the boundary fence, being the feed gas supply, the lean gas return, the NGL pipeline and a fuel gas start-up line.
At Plaju/Sungai Gerong refinery certain utility systems will be available for use in the fractionation plant and tie-ins to these utilities are included in the scope of work. Any other utility not provided by the refinery is to be provided as part of the scope of work.
Products to be shipped from the refinery will be mixed LPG, excess propane and condensate liquids for sales purposes. The design philosophy is to recover the maximum quantity of propane plus components by use of the UOP licensed a�?Ortloffa�? process technology and fractionate the mixed natural gas liquids to produce:
Feed Gas Composition [Design Basis]
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| COMPONENT | COMPOSITION (MOLE %) |
| Carbon Dioxide | 3.609 |
| Nitrogen | 0.213 |
| Methane | 85.109 |
| Ethane | 5.284 |
| Propane | 3.395 |
| i-Butane | 0.671 |
| n-Butane | 0.809 |
| i-Pentane | 0.307 |
| n-Pentane | 0.168 |
| n-Hexane | 0.196 |
| Heptane | 0.156 |
| Octane | 0.071 |
| Nonane | 0.012 |
| Decane | 0.002 |
| Total | 100 |
| H2O | Assume water content is 14 lbs/MMscf |
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Product Specification
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- Propane
| Maximum RVP at 100A�F | : | 200 psig | |
| Maximum Outlet Temperature | : | 120A�F | |
| Water Content | : | No Free Water | |
| Corrosivity | : | 1 Copper Strip (prefer 1A) | |
| Total Sulfur | : | 15 grains/cu.ft.max. (ASTM-D784) | |
| Composition: | |||
| C2 | : | < 0.3 % vol | |
| C3 | : | > 96.0 % vol | |
| C4 | : | < 4.0 % vol | |
| C5 + | : | Nil | |
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At the Fractionation Plant, NGL will be purified through De-Propanizer chamber to become Pure Propane (C3) and De-Butanizer chamber to become Butane (C4) and then mixed by static mixers, known as Mixed Liquid Petroleum Gas (Mixed LPG) stored in the storage tank 2×1.000 MT and 2×2.000 MT capacity and Condensate (C5+) are stored in a storage tank with capacity of 25,000 Barrel and transferred through a 1.2 km long pipeline to the ship unloading facility at the existing dock and 4,2 km long Mix LPG pipeline to Pulau Layang (Gasdom) for stocking needs of Southern Sumatra (Palembang, Jambi, Bengkulu, Lampung, Bangka Belitung). At the Fractionation Plant in Banyuasin, certain utilities system such as electricity supplied by Refinery Unit III PT Pertamina (Persero) with a capacity of 900 kW equipped with two (2) units of 6.6 kV transformers. Products from the LPG refinery is mixed LPG. NGL is processed through the De-Propanizer and De-Butanizer column to be a pure Propane (C3) and Butane (C4). Mixed LPG then kept stored in the storage tank 2×1.000 MT and 2×2.000 MT capacity, while condensate (C5+) are stored in a condensate storage tank 25,000 Barrel capacity. The LPG products are transferred through a 1.2 kilometer long pipeline in the Jetty – 1 to be sent outside Palembang, while for Palembang demands sent through 4.2 km pipelines to Pulau Layang (Gasdom), for Palembang, Jambi, Bengkulu, Lampung and Bangka Belitung.
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De-Propanizer Column & De-Butanizer Column
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]Function : Fractionation of Propan, Butan and Condensate from NGL
Capacity
De-Propanizer : 23.3 t/h
De-Butanizer : 9.3 t/h[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7568″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
LPG Storage Spheres
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]Function : LPG Storage
Capacity : 6,000MT (4 units)
Tank No.1,2 : 2,000MT x 2 units
Tank No.3,4 : 1,000MT x 2 units[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7558″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
Condensate Storage Tank
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]Funtion : Condensate Storage
Capacity : 25,000 BBL[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7567″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
LPG & Condensate Loader
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]Function : Shipment of LPG & Condensate in Jetty
Capacity
LPG Loader : 224~636 m3/h
Condensate Loader : 318~636 m3/h[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_empty_space][vc_separator type=”normal” style=”dashed”][vc_empty_space][/vc_tta_section][vc_tta_section title=”Extraction Plant” tab_id=”1502440937406-3a543372-c08b”][vc_column_text]
The Extraction facilities located in West Prabumulih is designed to extract the optimum amount of NGL from the combination of source gas at a capacity of 250 MMSCFD that available in Gas Compression Station 10 (SKG-10) in West Prabumulih. The NGL extraction plant, provide the means to extract NGL from gas pipeline. Extraction lean (residue) Methane gas (C1) and Ethane (C2) with the De-Ethanizer returned to the metering gas station and NGL extraction (Propane/C3, Butane/C4, Condensate/C5+) are transferred to the Fractionation plant that located in Refinery Unit III Pertamina Plaju/ Sungai Gerong, Banyuasin. NGL pipeline size 8 inches installed around 89.6 km long to transport NGL from Extraction Plant to Factionation Plant. NGL Extraction Plant in Prabumulih is designed to be self-sufficient by necessity in the provision of all utility systems, one and only across the line system, being feed gas supplier, back to lean gas, NGL pipelines and fuel gas track, and has gas power generator facilities with capacity of 3×725 kW and 1 unit emergency diesel generator with a capacity of 537 kW. NGL Extraction Plant in Prabumulih located next to PEP-SBSa�� gas metering station SKG-10, provides facilities to extract NGL from gas pipeline from PEP gas field in South Sumatra. The exhaust Methane (C1) and Ethane (C2) gases that is not drawn through De-Ethanizer process returned as a gas to gas metering station, whereas Propane/C3, Butane/C4, Condensate/C5+ is transferred to the Fractionation Refinery located in Refinery Unit III Sungai Gerong in Palembang by NGL pipelines size 8 inches A� 90 km long.
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GAS ENGINE GENERATOR A/B/C (01-G-5401 A/B/C)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]As a power plant equipment and electricity distribution at Extraction refineries/plant. Capacity 725 kwh/GEG[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7564″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
GAS TURBIN COMPRESSOR FEED, LEAN & COMMON A/B/C (01-K-2101/2301 A/B/C)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]Increase feed/lean gas pressure. For Feed gas from 420 Psig to 795 Psig, Lean gas from 270 Psig to 521 Psig. Capacity Feed Gas Compressor 125 MMSCFD/Compressor, Lean Gas Compressor 117,5 MMSCFD/ Compressor.[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7561″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
DEHYDRATION VESSEL (DHU) (01-V-2201 A/B/C)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]The separation of water from gas content and regeneration process. Capacity = 250 MMSCFD[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7570″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
REGENERATION GAS HEATER (01-H-2201)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]To heating the regeneration gas (Lean Gas) before entering into dehydration vessel (DHU).[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7565″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
HOT OIL HEATER (01-H-5701)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]To heating Hot Oil before being used as a heater in Reboiler De-Ethanizer.[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7571″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
TURBO EXPANDER (01-K-3301)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]To decrease Feed Gas pressure before entering to De-Ethanizer Column from 720 Psig – 210 Psig[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7559″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
DE-ETHANIZER COLUMN (01-C-3401)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]To seperate light fraction C1-C2 (Lean Gas) from weight fraction C3-C6+ (NGL) using the extraction principle.[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7569″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
NATURAL GAS LIQUID PUMP (01-P-3501 A/B)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]To deliver Natural Gas Liquid as a bottom product De-Ethanizer Column to Fractionation Plant, Sungai Gerong over the underground pipeline. Capacity = 350 USGPM[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7560″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
DE-ETHANIZER REFLUXS PUMP (01-P-3401 A/B)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]Transfer fluida from Top De-Ethanizer Column to be return into De-Ethanizer Column in order to increase recovery. Capacity = 335 USGPM[/vc_column_text][/vc_column_inner][/vc_row_inner][vc_separator type=”normal” style=”dashed”][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” equal_height=”yes” content_placement=”middle”][vc_column_inner width=”1/3″][vc_single_image image=”7566″ img_size=”250×250″ qode_css_animation=””][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]
HP FLARE STACK (01-ST-6401)
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/3″][vc_column_text]To burn exhaust gas of the process so as not to be exposed directly to environment. Capacity = 250 MMSCFD[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_tta_section][/vc_column][/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_empty_space][/vc_column][/vc_row]