沼氣提純成天然氣，到底要花多少錢？一文算清成本與收益

　　How much does it cost to purify biogas into natural gas? Calculate costs and benefits in one article

　　很多做沼氣利用、環(huán)保項目的朋友，都有一個共同的疑問：把沼氣提純成天然氣，到底要花多少錢？能不能賺錢？今天就不繞彎子，實打?qū)嵉馗蠹覈Z嘮，一分鐘幫大家算明白沼氣提純的成本賬，從前期投資到后期運營，再到回本周期，每一筆都講透徹，不玩虛的、不搞專業(yè)術(shù)語，新手也能一看就懂，再也不用為成本和收益的事兒發(fā)愁。

　　Many friends who work on biogas utilization and environmental protection projects have a common question: how much does it cost to purify biogas into natural gas? Can we make money? Today, let's not go around the bush and have a practical chat with everyone. In just one minute, we will help you calculate the cost of biogas purification. From the initial investment to the later operation, and then to the payback period, every transaction will be explained thoroughly, without any exaggeration or professional terminology. Even beginners can understand it at a glance and no longer have to worry about costs and benefits.

　　首先跟大家說清楚，沼氣提純成天然氣的成本，主要分成兩大塊，缺一不可，大家千萬別只算其中一塊，不然很容易算錯賬、踩大坑——就是一次性投資成本，加上長期運行成本。這兩塊成本，直接決定了項目能不能賺錢、多久能回本，咱們一塊一塊慢慢嘮。

　　First of all, let me make it clear to everyone that the cost of purifying biogas into natural gas is mainly divided into two parts, one of which is indispensable. Don't just count one part, otherwise it is easy to miscalculate and fall into a big trap - it is a one-time investment cost plus long-term operating costs. These two costs directly determine whether the project can make money and how long it will take to recoup. Let's talk slowly together.

　　第一部分，一次性設(shè)備投資成本。大家都知道，沼氣提純不是簡單過濾一下就行，得有一套完整的設(shè)備，通常包括脫硫系統(tǒng)、提純系統(tǒng)、脫水系統(tǒng)，還有一些輔助設(shè)備，這是前期投入的大頭。咱們就以行業(yè)內(nèi)常見的、每天處理1萬方沼氣的項目為例，給大家算一筆具體的賬，這樣更直觀。

　　The first part is the investment cost of disposable equipment. As we all know, biogas purification is not just about filtering, it requires a complete set of equipment, usually including desulfurization system, purification system, dehydration system, and some auxiliary equipment, which is the main investment in the early stage. Let's take the common project in the industry that processes 10000 cubic meters of biogas per day as an example to give you a specific account, which is more intuitive.

　　其中，脫硫系統(tǒng)是基礎(chǔ)，主要用來去除沼氣中的硫化氫，避免腐蝕設(shè)備、影響提純效果，這部分投資大概在100萬左右；核心的提純系統(tǒng)，用來脫除沼氣中的二氧化碳等雜質(zhì)，提升甲烷純度，達到天然氣標(biāo)準(zhǔn)，這部分成本稍高，大概在200萬到360萬之間（具體看提純技術(shù)，膜分離或變壓吸附工藝價格有差異）；再加上一些輔助設(shè)備，比如管道、控制系統(tǒng)等，大概20萬左右。

　　Among them, the desulfurization system is the foundation, mainly used to remove hydrogen sulfide from biogas, avoid equipment corrosion, and affect purification efficiency. The investment for this part is about 1 million yuan; The core purification system is used to remove impurities such as carbon dioxide from biogas, improve methane purity, and meet natural gas standards. The cost of this part is slightly higher, ranging from 2 million to 3.6 million (depending on the purification technology, membrane separation or pressure swing adsorption process prices may vary); Plus some auxiliary equipment, such as pipelines, control systems, etc., it's about 200000 yuan.

　　這么算下來，一套每天處理1萬方沼氣的提純設(shè)備，一次性投資大概在320萬到480萬之間。這里有個關(guān)鍵知識點跟大家說一下：氣量越大，單位投資成本越低。比如每天處理2萬方、5萬方的項目，分攤到每一方沼氣的設(shè)備成本，會比1萬方的項目低不少，這就是規(guī)模效應(yīng)，做項目的時候可以核心考慮。

　　Based on this calculation, a purification equipment that processes 10000 cubic meters of biogas per day requires a one-time investment of approximately 3.2 million to 4.8 million. Here is a key knowledge point to share with everyone: the larger the gas volume, the lower the unit investment cost. For example, processing projects of 20000 to 50000 cubic meters per day, the equipment cost allocated to each cubic meter of biogas will be much lower than that of projects of 10000 cubic meters. This is the scale effect, which can be a key consideration when working on projects.

　　第二部分，長期運行成本。這部分成本是很多朋友容易忽略的，但其實它才是決定項目長期收益的關(guān)鍵，畢竟設(shè)備買完之后，每天運行都要花錢。沼氣提純的運行成本，主要來自三個方面，咱們一個個算清楚，都是實打?qū)嵉闹С觥?/p>

　　The second part is the long-term operating costs. This part of the cost is easily overlooked by many friends, but in fact, it is the key to determining the long-term benefits of the project, after all, after purchasing the equipment, it costs money to operate every day. The operating costs of biogas purification mainly come from three aspects, and we have calculated them one by one, all of which are actual expenses.

　　非常主要的是電耗，提純過程中，壓縮機、脫碳系統(tǒng)等設(shè)備都需要用電，這部分成本大概在每方沼氣0.18到0.35元之間；其次是耗材成本，比如脫硫劑、吸附劑等，每天都會有消耗，大概在每方沼氣0.05到0.15元之間，具體看沼氣的雜質(zhì)含量；非常后是人工和維護成本，需要專人看管設(shè)備、定期維護，避免設(shè)備出故障，這部分大概在每方沼氣0.03到0.08元之間。

　　The most important factor is electricity consumption. During the purification process, equipment such as compressors and decarbonization systems require electricity, which costs approximately 0.18 to 0.35 yuan per cubic meter of biogas; Next is the cost of consumables, such as desulfurizers, adsorbents, etc., which are consumed daily, ranging from 0.05 to 0.15 yuan per cubic meter of biogas, depending on the impurity content of the biogas; Finally, there are labor and maintenance costs, which require dedicated personnel to monitor the equipment and conduct regular maintenance to avoid equipment malfunctions. This cost ranges from 0.03 to 0.08 yuan per cubic meter of biogas.

　　把這三部分加起來，沼氣提純的綜合運行成本，大概在每方0.26到0.55元之間。這里跟大家補充一句，沼氣提純成天然氣后，不是所有沼氣大多能轉(zhuǎn)化成甲烷，折算下來，每立方沼氣轉(zhuǎn)化成甲烷的成本，大概在1.2到1.5元每立方米，這個數(shù)值是行業(yè)內(nèi)的常規(guī)范圍，大家可以作為參考。

　　Adding these three parts together, the comprehensive operating cost of biogas purification is approximately between 0.26 and 0.55 yuan per cubic meter. Here I would like to add that not all biogas can be converted into methane after being purified into natural gas. Converted, the cost of converting biogas into methane per cubic meter is approximately 1.2 to 1.5 yuan per cubic meter, which is a common range in the industry and can be used as a reference for everyone.

　　算完成本，大家非常關(guān)心的肯定是：到底賺不賺錢？其實賺不賺錢，核心看回本周期，咱們結(jié)合一個實際案例，給大家算一筆收益賬，一看就明白。就以日產(chǎn)1萬方甲烷的項目為例，目前提純后的生物甲烷，市場銷售價格大概在2.0到2.5元每立方（不同地區(qū)、是否入網(wǎng)價格有差異）。

　　After calculating the cost, the most concerned thing for everyone is definitely: whether it's profitable or not? Actually, whether to make money or not depends on the current cycle. Let's combine a practical case and calculate a profit account for everyone. It's easy to understand at a glance. Taking the project of producing 10000 cubic meters of methane per day as an example, the market sales price of purified biomethane is approximately 2.0 to 2.5 yuan per cubic meter (depending on the region and whether it is connected to the network).

　　咱們按中間價算，每立方甲烷盈利大概在0.6到0.8元之間，一天下來，凈利潤大概在0.6到0.8萬元。按照這個盈利水平，前期的設(shè)備投資，大概2到5年就能回本。當(dāng)然，這只是常規(guī)情況，如果當(dāng)?shù)赜锌稍偕茉囱a貼、碳交易收益，回本周期還能縮短不少。

　　Based on the median price, the profit per cubic meter of methane is approximately between 0.6 and 0.8 yuan, resulting in a net profit of approximately 0.6 to 8000 yuan per day. At this profit level, the initial equipment investment can be recouped in approximately 2 to 5 years. Of course, this is just a routine situation. If there are subsidies for renewable energy and carbon trading profits locally, the payback period can be shortened significantly.

　　非常后跟大家總結(jié)幾個核心，都是干貨，一定要記牢，避免踩坑。第一，沼氣提純，氣量越大，回本越快，規(guī)模效應(yīng)越明顯，有條件的朋友可以考慮擴大處理規(guī)模；第二，連續(xù)運行非常關(guān)鍵，設(shè)備不能三天打魚兩天曬網(wǎng)，只有持續(xù)穩(wěn)定運行，才能保證穩(wěn)定收益，降低單位運行成本；第三，千萬別只算設(shè)備投資，忽略運行成本，很多朋友就是只算前期設(shè)備錢，覺得很劃算，后期才發(fā)現(xiàn)運行成本居高不下，非常后不賺錢。

　　Finally, I would like to summarize a few key points with everyone, all of which are valuable and must be memorized to avoid pitfalls. Firstly, for biogas purification, the larger the gas volume, the faster the cost recovery, and the more obvious the scale effect. Friends who have the conditions can consider expanding the processing scale; Secondly, continuous operation is the most crucial. The equipment cannot fish for three days and sun dry for two days. Only by continuous and stable operation can stable profits be guaranteed and unit operating costs be reduced; Thirdly, do not only calculate equipment investment and ignore operating costs. Many friends only calculate the initial equipment cost, thinking it is very cost-effective, but later realize that the operating costs remain high and do not make any money in the end.

　　還有一點要提醒大家，沼氣提純的成本，還會受沼氣成分、提純技術(shù)、當(dāng)?shù)仉妰r等因素影響。比如沼氣中硫化氫、二氧化碳含量高，耗材和電耗就會增加；采用膜分離技術(shù)，前期投資稍低，但后期膜組件需要定期更換；采用變壓吸附技術(shù)，甲烷回收率更高，但電耗稍高，大家可以根據(jù)自己的情況選擇。

　　Another point to remind everyone is that the cost of biogas purification is also affected by factors such as biogas composition, purification technology, and local electricity prices. For example, high levels of hydrogen sulfide and carbon dioxide in biogas will increase consumables and electricity consumption; Adopting membrane separation technology, the initial investment is slightly lower, but the membrane components need to be replaced regularly in the later stage; By using pressure swing adsorption technology, the methane recovery rate is higher, but the power consumption is slightly higher. Everyone can choose according to their own situation.

　　總的來說，沼氣提純成天然氣，前期有一定的設(shè)備投資，但長期運行成本可控，只要做好規(guī)模規(guī)劃、保證連續(xù)運行，還是有不錯的收益的，而且還能實現(xiàn)環(huán)保減排，兼具經(jīng)濟效益和環(huán)境效益。

　　In general, the purification of biogas into natural gas requires a certain amount of equipment investment in the early stage, but the long-term operating costs are controllable. As long as the scale is well planned and continuous operation is ensured, there are still good benefits, and environmental protection and emission reduction can be achieved, with both economic and environmental benefits.

　　希望今天的分享，能幫到各位做沼氣項目的朋友，有效算清沼氣提純的成本賬、收益賬，再也不用為“要不要做、能不能賺錢”的事兒糾結(jié)。如果大家還有具體的項目規(guī)模、當(dāng)?shù)仉妰r等細節(jié)，也可以私下交流，幫大家合理測算成本和回本周期，少走彎路、多賺錢。

　　I hope today's sharing can help friends who are doing biogas projects to thoroughly calculate the cost and profit of biogas purification, and no longer have to worry about whether to do it or make money. If you have specific details such as project scale and local electricity prices, you can also communicate privately to help you accurately calculate costs and payback periods, avoiding detours and making more money.