該計(jì)劃中的捕集系統(tǒng)將建在NRG位于德克薩斯州湯普森鎮(zhèn)附近的本德堡縣農(nóng)村地區(qū)占地4,880英畝的W.A.堂區(qū)工廠上。該電站包括四個(gè)以煤粉為燃料的大型發(fā)電機(jī)組，四個(gè)較小的天然氣發(fā)電機(jī)組，以及一個(gè)2,430英畝的人工湖，用于冷卻水。該項(xiàng)目將對(duì)其中一個(gè)以煤為燃料的機(jī)組(8號(hào)機(jī)組)進(jìn)行改造，使其具有燃燒后的二氧化碳捕獲系統(tǒng)，利用緊挨著機(jī)組的廠區(qū)內(nèi)的可用空間。二氧化碳捕獲系統(tǒng)將使用先進(jìn)的胺基溶劑技術(shù)。項(xiàng)目演示期間還可能包括對(duì)其他胺基溶劑的測(cè)試。作為該項(xiàng)目的一部分，還將建設(shè)一個(gè)新的天然氣熱電聯(lián)產(chǎn)廠，包括一個(gè)帶有熱回收蒸汽發(fā)生器(CT/HRSG)的燃燒渦輪。據(jù)估計(jì)，該熱電聯(lián)產(chǎn)工廠將產(chǎn)生相當(dāng)于80兆瓦的電力，足以驅(qū)動(dòng)壓縮機(jī)和捕獲系統(tǒng)的設(shè)備，將剩余的電力出售給電網(wǎng)。新燃?xì)廨啓C(jī)排出的熱廢氣將用于余熱鍋爐產(chǎn)生蒸汽，為溶劑再生過(guò)程提供熱量。NRG計(jì)劃在不分?jǐn)偯绹?guó)能源部成本的情況下繼續(xù)建設(shè)天然氣熱電聯(lián)產(chǎn)廠，并將于2013年開(kāi)始運(yùn)營(yíng)。發(fā)電廠的初步運(yùn)行將為與教區(qū)PCCS項(xiàng)目無(wú)關(guān)的其他NRG需求提供峰值電力。在晚些時(shí)候，可能是2015年，發(fā)電廠將為碳捕獲設(shè)施提供所需的電力。
The proposed capture system would be constructed on NRG’s 4,880-acre W.A. Parish Plant in rural Fort Bend County near the small town of Thompsons, Texas. The plant site includes four large power generating units fueled with pulverized coal, four smaller natural gas-fired units, and a 2,430-acre manmade lake used for cooling water. The proposed project would retrofit one of the coal-fueled units (Unit 8) with a post-combustion CO2 capture system, using space available on the plant site immediately adjacent to the unit. The CO2 capture system would use an advanced amine-based solvent technology. The project demonstration period may also include tests of other amine-based solvents. A new natural gas-fired cogeneration plant comprised of a combustion turbine with a heat recovery steam generator (CT/HRSG) would also be constructed as part of this project. The cogeneration plant would produce an estimated 80 MW equivalent of electric power which would be sufficient to drive the compressors and equipment of the capturesystem leaving excess power available for saleto the grid. The hot exhaust gases from the new combustion turbine would be used to produce steam in the HRSG, providing heat for the solvent regeneration process. NRG plans to proceed with construction of the natural gas-fired cogeneration plant without DOE cost sharing and would begin operation in 2013. The initial operation of the electric generating plant would provide peaking power for other NRG needs unrelated to the Parish PCCS Project. At a later date, possibly 2015, the electric generating plant would provide the power needed for the carbon capture facility.
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