SYSTEM AND METHOD FOR HIGH EFFICIENCY POWER GENERATION USING NITROGEN GAS WORKING FLUID

• Main Authors: MILES R PALMER, JEREMY ERON FETVEDT, RODNEY JOHN ALLAM
• Format: Patent
• Language: English; Japanese
• Published: 12.01.2017
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

PROBLEM TO BE SOLVED: To provide a power production method using high pressure/low pressure ratio Brayton mainly using Nmixed with COand HO combustion product as a working fluid, in which high pressure is within a range of 80 bar-500 bar, and the pressure ratio is within a range of 1.5-10.SOLUTION: A natural gas fuel can be burned in a first high-pressure combustor by using a pressurized preheated air of approximately stoichiometric amount, a net combustion gas can be mixed with heated high-pressure recycled N+CO+HO stream. The stream relieves a mixture gas temperature to a value necessary for a maximum input temperature to a first power turbine producing shaft.SELECTED DRAWING: Figure 1 【課題】作動流体としてＣＯ２およびＨ２Ｏ燃焼生成物と混合されたＮ２を主に用いた高圧／低圧比ブレイトン電力サイクルを使用する電力生産方法が提供される。高圧は８０ｂａｒ〜５００ｂａｒの範囲内にありうる。圧力比は１．５〜１０の範囲にありうる。【解決手段】天然ガス燃料は、ほぼ化学量論量の加圧された予熱空気を用いて第１の高圧燃焼器内で燃焼されることができ、正味の燃焼ガスは、加熱された高圧リサイクルＮ２＋ＣＯ２＋Ｈ２Ｏストリームと混合されることができ、そのストリームは、混合ガス温度を、シャフトパワーを生成する第１のパワータービンに対する最大入口温度のために必要とされる値まで緩和する。【選択図】図１