沼氣提純避坑指南！氣量大別瞎選，高壓水洗比變壓吸附/膜分離更穩(wěn)更省錢

　　Guide to avoiding pitfalls in biogas purification! Don't choose blindly when the gas volume is large. High pressure water washing is more stable and cost-effective than pressure swing adsorption/membrane separation

　　做沼氣利用的老鐵們，不管是養(yǎng)殖場、污水處理廠，還是工業(yè)沼氣項目，肯定都想把沼氣提純成天然氣，變廢為寶、增加收益。但很多人一提沼氣提純，就只知道變壓吸附或膜分離，其實不然！今天就給大家嘮個實在干貨：沼氣提純成天然氣，不一定都用變壓吸附或膜分離，當沼氣氣量較大時，高壓水洗反而更穩(wěn)、更省錢，純實操分享，不管是項目負責人、設(shè)備采購者，還是想了解沼氣提純的朋友，看完都能少走冤枉路，選對最適合自己的提純工藝。

　　The old iron workers who make use of biogas, whether they are breeding farms, sewage treatment plants or industrial biogas projects, certainly want to purify biogas into natural gas, turn waste into treasure and increase income. But many people only know about pressure swing adsorption or membrane separation when it comes to biogas purification, which is actually not the case! Today, let me share with you some practical tips: when biogas is purified into natural gas, it is not necessarily necessary to use pressure swing adsorption or membrane separation. When the biogas volume is large, high-pressure water washing is more stable and cost-effective. Whether you are a project leader, equipment purchaser, or friends who want to learn about biogas purification, after reading it, you can avoid taking the wrong path and choose the most suitable purification process for yourself.

　　先跟大家說句實在的，以前我也覺得，沼氣提純不是變壓吸附就是膜分離，直到接觸了高壓水洗工藝，才發(fā)現(xiàn)選對工藝，能省一大筆錢，還能減少很多運維麻煩。很多項目負責人因為不懂，不管自己的沼氣氣量大小，盲目跟風選變壓吸附或膜分離，結(jié)果要么運行不穩(wěn)定，要么運行成本居高不下，得不償失。其實沼氣提純的核心，就是選對工藝——氣量決定工藝，選對了，既穩(wěn)定又省錢。

　　To be honest with everyone, I used to think that biogas purification was either pressure swing adsorption or membrane separation. It wasn't until I came into contact with high-pressure water washing process that I realized choosing the right process could save a lot of money and reduce a lot of maintenance trouble. Many project leaders, due to their lack of understanding, blindly follow wind selection pressure swing adsorption or membrane separation regardless of their own biogas volume, resulting in either unstable operation or high operating costs, which are not worth the loss. In fact, the core of biogas purification is to choose the right process - the gas volume determines the process. Choosing the right process is both stable and cost-effective.

　　首先給大家科普下，高壓水洗到底是啥，為啥氣量大的時候，它比變壓吸附、膜分離更有優(yōu)勢。高壓水洗是一種物理吸收法，沒有復雜的化學反應，原理特別簡單，說白了就是利用“二氧化碳和甲烷在水中的溶解度差異”來提純。大家記住一個關(guān)鍵點：二氧化碳在水中的溶解度，遠高于甲烷，而甲烷基本不溶于水。

　　Firstly, let me explain to you what high-pressure water washing is and why it has more advantages than pressure swing adsorption and membrane separation when the gas volume is high. High pressure water washing is a physical absorption method that does not involve complex chemical reactions, and its principle is particularly simple. In other words, it uses the difference in solubility between carbon dioxide and methane in water to purify. Remember one key point: the solubility of carbon dioxide in water is much higher than that of methane, which is essentially insoluble in water.

　　具體怎么操作呢？就是讓沼氣在高壓條件下，與水充分接觸、充分混合，這時候水中會優(yōu)先吸收沼氣里的二氧化碳，而甲烷因為不溶于水，會被單獨分離出來，這樣就實現(xiàn)了甲烷的提純，輕松把沼氣變成高純度天然氣。最讓人省心的是，整個過程不需要任何化學溶劑，只靠循環(huán)水就能連續(xù)運行，既環(huán)保又安全，沒有化學殘留，也不用擔心化學溶劑泄漏帶來的風險，后期運維也特別簡單。

　　How to operate it specifically? It is to allow biogas to fully contact and mix with water under high pressure conditions. At this time, water will preferentially absorb carbon dioxide from biogas, while methane will be separated separately because it is insoluble in water. This achieves the purification of methane and easily turns biogas into high-purity natural gas. The most worry free thing is that the entire process does not require any chemical solvents, and can be continuously operated by circulating water. It is both environmentally friendly and safe, with no chemical residues, and there is no need to worry about the risk of chemical solvent leakage. The later operation and maintenance are also very simple.

　　一套標準的高壓水洗提純系統(tǒng)，核心部件也不復雜，主要由吸收塔、解析塔和高壓水循環(huán)系統(tǒng)組成。吸收塔負責讓沼氣和水充分接觸，完成二氧化碳的吸收；解析塔負責把吸收了二氧化碳的水進行解析，分離出二氧化碳，讓水可以循環(huán)利用；高壓水循環(huán)系統(tǒng)則負責保障整個流程的水循環(huán)，實現(xiàn)連續(xù)運行。它的核心特點就是：連續(xù)運行能力強，不容易出故障，而且氣量越大，運行起來越經(jīng)濟，運行成本越低。

　　A standard high-pressure water washing and purification system, with uncomplicated core components, mainly composed of an absorption tower, an analysis tower, and a high-pressure water circulation system. The absorption tower is responsible for ensuring full contact between biogas and water to complete the absorption of carbon dioxide; The analysis tower is responsible for analyzing the water that has absorbed carbon dioxide, separating the carbon dioxide, and allowing the water to be recycled; The high-pressure water circulation system is responsible for ensuring the water circulation of the entire process and achieving continuous operation. Its core characteristics are: strong continuous operation capability, less prone to malfunctions, and the larger the gas volume, the more economical the operation and the lower the operating cost.

　　這里重點跟大家對比一下，為啥氣量大的時候，高壓水洗比變壓吸附、膜分離更穩(wěn)、更省錢。很多做大型沼氣項目的老鐵反饋，用變壓吸附工藝，氣量太大的時候，吸附劑容易飽和，需要頻繁再生，不僅運行不穩(wěn)定，再生過程還會消耗大量能源，運行成本居高不下；而膜分離工藝，適合中小氣量，氣量太大的話，需要多組膜組件并聯(lián)，投資成本高，而且膜組件容易堵塞、損耗，后期更換成本也不低。

　　Here we will focus on comparing why high-pressure water washing is more stable and cost-effective than pressure swing adsorption and membrane separation when the gas volume is high. In many large-scale biogas projects, pressure swing adsorption process is used to feed back the old iron. When the gas volume is too large, the adsorbent is easy to be saturated and needs frequent regeneration. Not only is the operation unstable, but the regeneration process also consumes a lot of energy, and the operation cost remains high; The membrane separation process is suitable for small and medium gas volumes. If the gas volume is too large, multiple sets of membrane modules need to be connected in parallel, resulting in high investment costs. Additionally, membrane modules are prone to clogging and loss, and the cost of replacement in the later stage is also not low.

　　而高壓水洗工藝，剛好適配大氣量場景，只要氣量夠大，它的優(yōu)勢就越明顯——運行穩(wěn)定，不用頻繁維護，循環(huán)水可以重復利用，沒有吸附劑、膜組件這些易損耗部件，運行成本比變壓吸附、膜分離低不少，長期算下來，能給企業(yè)省一大筆錢。尤其是每天沼氣氣量在1萬到5萬立方米及以上的項目，選高壓水洗，絕對是最劃算、最省心的選擇。

　　The high-pressure water washing process is just suitable for high gas volume scenarios. As long as the gas volume is large enough, its advantages become more obvious - stable operation, no need for frequent maintenance, reusable circulating water, no easily consumable components such as adsorbents and membrane components, and much lower operating costs than pressure swing adsorption and membrane separation. In the long run, it can save a lot of money for enterprises. Especially for projects with a daily biogas volume of 10000 to 50000 cubic meters or more, choosing high-pressure water washing is definitely the most cost-effective and worry free choice.

　　當然，也不是所有項目都適合高壓水洗，咱們也不能一刀切。如果是中小規(guī)模的沼氣提純項目，每天的沼氣氣量達不到1萬立方米，那還是建議考慮膜分離工藝，投資更合理、更劃算。膜分離工藝的優(yōu)勢就是設(shè)備緊湊、投資成本低，適合氣量小、短期運行的項目，不用盲目追求高壓水洗，適合自己的才是最好的。

　　Of course, not all projects are suitable for high-pressure water washing, and we cannot have a one size fits all approach. If it is a small-scale biogas purification project with a daily biogas volume of less than 10000 cubic meters, it is still recommended to consider membrane separation technology for more reasonable and cost-effective investment. The advantages of membrane separation process are compact equipment, low investment cost, suitable for projects with small gas volume and short-term operation, without blindly pursuing high-pressure water washing. What suits oneself is the best.

　　一句話總結(jié)大家就記好：氣量大（日氣量≥1萬-5萬立方米），高壓水洗更劃算、更穩(wěn)定；氣量中小，膜分離更經(jīng)濟、更合適；變壓吸附雖然也能用，但在大氣量場景下，性價比不如高壓水洗，中小氣量場景下，投資不如膜分離有優(yōu)勢，按需選擇即可。

　　In summary, everyone should remember that with a large gas volume (daily gas volume ≥ 10000-50000 cubic meters), high-pressure water washing is more cost-effective and stable; Small gas volume makes membrane separation more economical and suitable; Although pressure swing adsorption can also be used, its cost-effectiveness is not as good as high-pressure water washing in high gas volume scenarios, and its investment advantage is not as good as membrane separation in small and medium gas volume scenarios. You can choose according to your needs.

　　可能有老鐵會問，我怎么知道自己的項目適合哪種工藝？不用擔心，恒昌化工就能幫大家解決這個難題。恒昌化工可以根據(jù)你的沼氣氣量、二氧化碳含量，還有終端用途（比如民用、工業(yè)用、發(fā)電用），為你定制專屬的提純系統(tǒng)方案，不管是高壓水洗、膜分離，還是變壓吸附，都能精準匹配，幫你實現(xiàn)高效率、低成本的甲烷提純，不用自己費心研究工藝，專業(yè)的事交給專業(yè)的人做。

　　Maybe Laotie will ask, how do I know which process is suitable for my project? Don't worry, Hengchang Chemical can help everyone solve this problem. Hengchang Chemical can customize a dedicated purification system solution for you based on your biogas volume, carbon dioxide content, and end use applications (such as civilian, industrial, and power generation). Whether it is high-pressure water washing, membrane separation, or pressure swing adsorption, it can be accurately matched to help you achieve efficient and low-cost methane purification. You don't have to worry about researching the process yourself, and professional matters can be entrusted to professionals.

　　很多沼氣項目負責人，都是找恒昌化工定制的方案，反饋都特別好：不管是大氣量項目選高壓水洗，還是中小氣量項目選膜分離，恒昌化工都能精準對接需求，方案合理、設(shè)備靠譜，運行穩(wěn)定、成本可控，不僅幫大家實現(xiàn)了沼氣變廢為寶，還能最大化提升收益，減少運維麻煩。

　　Many biogas project leaders seek customized solutions from Hengchang Chemical, and the feedback is particularly good: whether it is choosing high-pressure water washing for large gas projects or membrane separation for small and medium gas projects, Hengchang Chemical can accurately meet the needs, with reasonable solutions, reliable equipment, stable operation, and controllable costs. It not only helps everyone turn biogas waste into treasure, but also maximizes profits and reduces maintenance troubles.

　　現(xiàn)在，越來越多的大型沼氣項目，都開始采用高壓水洗提純工藝，一方面是因為它環(huán)保、安全、運行穩(wěn)定，另一方面也是因為它氣量越大越省錢，能給企業(yè)帶來更多收益。而中小規(guī)模項目，膜分離依然是主流選擇，投資少、見效快，適合短期布局。

　　Nowadays, more and more large-scale biogas projects are adopting high-pressure water washing purification technology. On the one hand, this is because it is environmentally friendly, safe, and operates stably. On the other hand, it is also because the larger the gas volume, the more cost-effective it is, which can bring more profits to the enterprise. For small and medium-sized projects, membrane separation is still the mainstream choice, with low investment and quick results, suitable for short-term layout.

　　總結(jié)一下，沼氣提純不用盲目跟風選變壓吸附或膜分離，關(guān)鍵看氣量：大氣量選高壓水洗，穩(wěn)又??；中小氣量選膜分離，省投資。恒昌化工可按需定制方案，幫大家避開工藝選擇的坑，實現(xiàn)高效率、低成本的沼氣提純，讓每一份沼氣都能發(fā)揮最大價值，真正做到變廢為寶、增收增效。

　　To sum up, biogas purification does not need to blindly follow wind selection, pressure swing adsorption or membrane separation. The key is to consider the gas volume: high-pressure water washing is selected for atmospheric volume, which is stable and economical; Membrane separation for small and medium gas volumes, saving investment. Hengchang Chemical can customize solutions as needed to help people avoid pitfalls in process selection, achieve efficient and low-cost biogas purification, and maximize the value of each biogas, truly turning waste into treasure and increasing income and efficiency.

　　做沼氣項目的老鐵們，記住這個核心邏輯，選對沼氣提純工藝，就能少花冤枉錢、少走冤枉路，讓沼氣提純項目穩(wěn)定運行、持續(xù)盈利。如果不知道自己的項目適合哪種工藝，不妨找恒昌化工，專業(yè)定制方案，省心、省力、更省錢！

　　The old iron workers who are engaged in biogas projects should remember this core logic and choose the right biogas purification process, so that they can spend less money and take fewer wrong paths, and make the biogas purification project stable and profitable. If you don't know which process is suitable for your project, you can look for Hengchang Chemical for professional customized solutions, which are worry free, labor-saving, and more cost-effective!