沼气脱硫，绿色能源转型的关键一环

　　Biogas desulfurization, a key link in the transition to green energy

　　在沼气变身天然气、助力绿色能源革命的过程中，有个不可或缺的核心步骤——沼气脱硫。很多人可能不知道，刚从沼气池或厌氧罐里出来的沼气，根本不是能直接用的“成品清洁能源”，里面藏着大量硫化氢等杂质。这些杂质不仅会严重腐蚀发电机、锅炉，还会在燃烧时产生有毒气体，污染环境又危害健康。所以说，沼气脱硫不只是提升能源品质的必要工序，更是让沼气能被资源化利用的前提，是绿色能源转型里实打实的关键一环。今天就给大家把沼气脱硫的门道讲明白，看看它为啥这么重要。

　　In the process of transforming biogas into natural gas and supporting the green energy revolution, there is an indispensable core step - biogas desulfurization. Many people may not know that the biogas that has just come out of a biogas digester or anaerobic tank is not a "finished clean energy" that can be directly used, as it contains a large amount of impurities such as hydrogen sulfide. These impurities not only severely corrode generators and boilers, but also produce toxic gases during combustion, polluting the environment and endangering health. So, biogas desulfurization is not only a necessary process to improve energy quality, but also a prerequisite for the resource utilization of biogas, which is a key link in the transformation of green energy. Today, we will explain the process of biogas desulfurization to everyone and see why it is so important.

　　先说说沼气里的“头号隐患”——硫化氢。这东西闻着有股臭鸡蛋味，毒性极强，浓度高了甚至会引发中毒事故。更麻烦的是它的腐蚀性，要是把没脱硫的沼气直接拿去发电，短短几百小时就可能把发电机内部腐蚀得一塌糊涂，不仅大幅缩短设备寿命，还得花大价钱维修，让企业的运维成本直线上升。尤其是养殖场、酒厂、污水处理厂这些沼气产出量大的地方，要是忽略脱硫环节直接用沼气，不光设备扛不住，还可能因为环保不达标被要求停产，反而得不偿失。

　　First, let's talk about the "number one hazard" in biogas - hydrogen sulfide. This thing has a strong odor of rotten eggs and is extremely toxic. If the concentration is too high, it may even cause poisoning accidents. What's even more troublesome is its corrosiveness. If the desulfurized biogas is directly used for power generation, it may corrode the inside of the generator in just a few hundred hours, greatly shortening the equipment life and requiring expensive maintenance, causing the operation and maintenance costs of the enterprise to skyrocket. Especially in places with high biogas production such as breeding farms, distilleries, and sewage treatment plants, if the desulfurization process is ignored and biogas is directly used, not only will the equipment not be able to withstand it, but it may also be required to stop production due to environmental non-compliance, which is not worth the loss.

　　为了应对不同场景的需求，现在行业里有三种主流的沼气脱硫技术，各有各的优势。第一种是生物脱硫技术，靠微生物的代谢作用把硫化氢变成无害物质，不仅环保，运行成本还低，特别适合中等规模的沼气工程；第二种是络合铁脱硫技术，反应速度快、脱硫效率高，就算是硫化氢浓度高的场景也能搞定，所以常被用在大型养殖场和工业沼气项目上；还有一种是氧化铁干法脱硫，工艺简单、投资成本低，小型沼气利用项目选它性价比最高。虽然这三种技术的原理不一样，但目标都是把沼气里的硫化氢含量降到设备能承受的范围，为后续的利用或提纯打下坚实基础。

　　In order to meet the needs of different scenarios, there are currently three mainstream biogas desulfurization technologies in the industry, each with its own advantages. The first type is biological desulfurization technology, which relies on the metabolic process of microorganisms to turn hydrogen sulfide into harmless substances. It is not only environmentally friendly but also has low operating costs, making it particularly suitable for medium-sized biogas projects; The second type is chelated iron desulfurization technology, which has fast reaction speed and high desulfurization efficiency. Even scenarios with high hydrogen sulfide concentration can be solved, so it is often used in large-scale breeding farms and industrial biogas projects; Another method is iron oxide dry desulfurization, which has a simple process and low investment cost. It is the most cost-effective option for small-scale biogas utilization projects. Although the principles of these three technologies are different, their goal is to reduce the hydrogen sulfide content in biogas to a range that the equipment can withstand, laying a solid foundation for subsequent utilization or purification.

　　这里要特别提醒一句：沼气脱硫可不是孤立的步骤，它是整个沼气净化流程的“第一步”，必须放在前面。要是想把沼气升级成符合国家标准的天然气，脱硫之后还得进行提纯脱碳，去掉二氧化碳等杂质、提升甲烷纯度。但如果跳过脱硫直接去提纯，硫化氢的腐蚀性会直接损坏提纯设备，让整个净化系统瘫痪。所以“先脱硫后提纯”已经成了行业里的共识，这两步共同构成了沼气资源化利用的核心链条，少了哪一步都不行。

　　Here is a special reminder: biogas desulfurization is not an isolated step, it is the "first step" of the entire biogas purification process and must be placed at the forefront. If you want to upgrade biogas to natural gas that meets national standards, after desulfurization, purification and decarbonization are necessary to remove impurities such as carbon dioxide and improve methane purity. But if desulfurization is skipped and purification is carried out directly, the corrosiveness of hydrogen sulfide will directly damage the purification equipment, causing the entire purification system to malfunction. So "desulfurization before purification" has become a consensus in the industry, and these two steps together constitute the core chain of biogas resource utilization. Without any step, it is impossible.

　　在双碳目标的引领下，沼气脱硫技术的价值可不只在于保护设备、达标环保。它还能推动粪污、工业污水这些废弃物的资源化循环，实现环保和经济的双赢。比如养殖场的牛粪、豆制品厂的污水，经过厌氧发酵产生沼气，脱硫之后用来发电、烧锅炉，既解决了废弃物处理的大难题，又减少了对传统能源的消耗，相当于“变废为宝”。而且随着技术不断升级，现在先进的脱硫系统已经能实现自动化运行，不管是小型沼气项目还是大型工程都能适配，为绿色能源革命提供了可靠的保障。

　　Under the guidance of the dual carbon target, the value of biogas desulfurization technology lies not only in protecting equipment and meeting environmental standards. It can also promote the resource recycling of waste such as manure and industrial wastewater, achieving a win-win situation for environmental protection and economy. For example, cow manure from breeding farms and wastewater from bean product factories are anaerobically fermented to produce biogas, which is then desulfurized and used for power generation and boiler burning. This not only solves the major problem of waste disposal, but also reduces the consumption of traditional energy, equivalent to "turning waste into treasure". Moreover, with the continuous upgrading of technology, advanced desulfurization systems can now achieve automated operation, which can adapt to both small-scale biogas projects and large-scale projects, providing reliable guarantees for the green energy revolution.

　　可能有人觉得，脱硫只是个不起眼的小工序，但正是这个小工序，成了连接污染治理和能源生产的桥梁。没有它，沼气这个“绿色宝藏”就没法安全、高效地走进工业生产和日常生活；没有它，沼气资源化利用的链条就会断裂，绿色能源转型也会少了重要的支撑。从废弃物到清洁能源，沼气的转型之路，每一步都离不开脱硫技术的守护。

　　Some people may think that desulfurization is just an inconspicuous small process, but it is precisely this small process that has become a bridge connecting pollution control and energy production. Without it, biogas, the 'green treasure', cannot safely and efficiently enter industrial production and daily life; Without it, the chain of biogas resource utilization will break, and the transition to green energy will also lack important support. The transformation of biogas from waste to clean energy relies on the protection of desulfurization technology at every step.

　　总结下来，沼气脱硫从来都不是可有可无的环节，而是绿色能源转型中必须筑牢的关键一环。它既守护着设备安全和生态环境，又让沼气的经济价值和环保价值充分释放。随着绿色发展理念越来越深入，沼气脱硫技术会不断优化升级，在推动碳中和目标实现、引领绿色能源革命的道路上，发挥越来越重要的作用。如果大家接触到沼气相关的项目，不妨多关注一下脱硫环节，就能明白这份“绿色能源”背后的安全保障密码。

　　In summary, biogas desulfurization has never been an optional step, but a crucial link that must be firmly established in the transition to green energy. It not only safeguards equipment safety and ecological environment, but also fully unleashes the economic and environmental value of biogas. With the deepening of the concept of green development, biogas desulfurization technology will continue to be optimized and upgraded, playing an increasingly important role in promoting the achievement of carbon neutrality goals and leading the green energy revolution. If you are exposed to projects related to biogas, you may want to pay more attention to the desulfurization process to understand the security code behind this "green energy".

　　本文由  沼气脱硫  友情奉献.更多有关的知识请点击  https://www.hneee.net/   真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

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