以下是一份關于綠色能源生物天然氣（沼氣提純）可行性報告的框架和核心內容，供參考：

　　The following is the framework and core content of a feasibility report on green energy bio natural gas (biogas purification) for reference:

　　綠色能源生物天然氣（沼氣提純）可行性報告

　　Feasibility Report on Green Energy Bionatural Gas (Biogas Purification)

　　1. 項目背景與意義1.1 政策支持國家“雙碳”目標（2030碳達峰、2060碳中和）推動可再生能源發展。政策文件支持：《可再生能源法》《“十四五”生物經濟發展規劃》等明確鼓勵沼氣提純利用。補貼與稅收優惠：部分地區對生物天然氣項目提供建設補貼或運營電價優惠。1.2 市場需求環保需求：替代化石能源，減少溫室氣體排放（甲烷的溫室效應是CO的25倍，提純后可減排）。能源需求：提純后的生物天然氣（甲烷含量≥95%）可直接并入天然氣管網或作為車用燃料（CNG/LNG）。循環經濟：農業廢棄物（畜禽糞便、秸稈）、餐廚垃圾、工業有機廢水等資源化利用。

　　1. Project background and significance 1.1 Policy support for the national "dual carbon" goals (2030 carbon peak, 2060 carbon neutrality) to promote the development of renewable energy. Policy documents support: The Renewable Energy Law and the 14th Five Year Plan for the Development of Bioeconomy explicitly encourage the purification and utilization of biogas. Subsidies and tax incentives: Some regions provide construction subsidies or operational electricity price discounts for biogas projects. 1.2 Market demand for environmental protection: Replace fossil fuels and reduce greenhouse gas emissions (methane has a greenhouse effect 25 times that of CO and can be purified to reduce emissions). Energy demand: Purified bio natural gas (methane content ≥ 95%) can be directly integrated into natural gas pipelines or used as vehicle fuel (CNG/LNG). Circular economy: Resource utilization of agricultural waste (livestock manure, straw), kitchen waste, industrial organic wastewater, etc.

　　2. 技術可行性2.1 工藝流程原料預處理：收集有機廢棄物，進行除雜、粉碎、調質。厭氧發酵：在厭氧罐中產沼氣（甲烷50%~70%，CO? 30%~50%，含少量H?S、水蒸氣等）。沼氣提純：物理法：膜分離、PSA（變壓吸附）、水洗法。化學法：胺吸收法（脫除CO?和H?S）。壓縮儲存：提純后的生物天然氣（CH?≥95%）壓縮至20MPa或液化（LNG）。并網/應用：輸入天然氣管網、車用燃料或工業用途。

　　2. Technical feasibility 2.1 Process flow raw material pretreatment: Collect organic waste, remove impurities, crush, and adjust. Anaerobic fermentation: producing biogas (methane 50%~70%, CO ? 30%~50%, containing small amounts of H ? S, water vapor, etc.) in anaerobic tanks. Biogas purification: Physical methods: membrane separation, PSA (pressure swing adsorption), water washing method. Chemical method: amine absorption method (removal of CO ? and H ? S). Compressed storage: Purified biogas (CH ? ≥ 95%) is compressed to 20MPa or liquefied (LNG). Grid connection/application: Input natural gas pipeline network, vehicle fuel or industrial use.

　　3 環境與社會效益3.1 減排效益年處理10萬噸畜禽糞便可減排CO?約5萬噸/年。減少H?S、NH?等污染物排放。3.2 社會效益解決農村有機廢棄物污染問題。創造就業（原料收集、運維等崗位）。

　　3 Environmental and Social Benefits 3.1 Emission Reduction Benefits Processing 100000 tons of livestock manure per year can reduce CO ? emissions by approximately 50000 tons per year. Reduce emissions of pollutants such as H ? S and NH ∝. 3.2 Social benefits to solve the problem of organic waste pollution in rural areas. Create employment opportunities (such as raw material collection, operation and maintenance).

　　4. 風險與對策4.1 風險分析原料供應風險：季節性波動（如秸稈集中產生）。技術風險：提純設備穩定性（如H?S腐蝕）。市場風險：天然氣價格波動。4.2 應對措施簽訂長期原料供應協議。選擇成熟提純技術（如PSA+膜分離組合工藝）。申請綠色金融支持（如碳減排貸款）。

　　4. Risks and Countermeasures 4.1 Risk Analysis Raw Material Supply Risks: Seasonal Fluctuations (such as Concentrated Production of Straw). Technical risk: Stability of purification equipment (such as H ? S corrosion). Market risk: Fluctuations in natural gas prices. 4.2 Response measures: Sign a long-term raw material supply agreement. Choose mature purification technologies (such as PSA+membrane separation combination process). Apply for green finance support (such as carbon reduction loans).

　　5. 結論與建議可行：生物天然氣項目符合政策導向，技術成熟，經濟性逐步提升。建議：優先布局農業大省（河南、山東等）或工業園區（集中處理有機廢水）。爭取地方政府配套（如特許經營權、并網許可）。探索“沼氣發電+提純”多聯產模式。

　　5. Conclusion and Suggestions Feasible: The bio natural gas project conforms to policy guidance, has mature technology, and gradually improves economic viability. Suggestion: Prioritize the layout of agricultural provinces (Henan, Shandong, etc.) or industrial parks (centralized treatment of organic wastewater). Strive for local government support (such as franchise rights, grid connection permits). Explore the multi generation mode of "biogas power generation+purification".

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