午夜黄色视频在线观看提纯的核心目标就一个：把CH?从55%-65%提到90%以上，同时把CO?、H?S、H?O等杂质降到标准以下，制成符合管网或车用标准的生物天然气。当前主流技术四条路线，怎么选？

The core goal of biogas purification is to increase CH? From 55% -65% to over 90%, while reducing CO? And H? S、H? Reduce impurities such as O to below the standard and produce bio natural gas that meets pipeline or vehicle standards. How to choose from the four mainstream technology routes currently available?

1. 水洗法（物理吸收）：利用CH?和CO?在水中溶解度的差异，高压下CO?溶于水而CH?不溶。优点是工艺简单、无需化学品，缺点是耗水量大、后续废水处理成本高。

1. Water washing method (physical absorption): Utilizing the difference in solubility between CH? And CO? In water, CO? Is soluble in water while CH? Is insoluble under high pressure. The advantages are simple process and no need for chemicals, but the disadvantages are high water consumption and high cost of subsequent wastewater treatment.

2. 胺洗法（化学吸收）：用胺类溶液（如MEA、MDEA）化学吸收CO?，再生后循环使用。脱碳效率（可到99%），但胺液损耗、热再生能耗高，运行成本不低。

2. Amine washing method (chemical absorption): Use amine solutions (such as MEA, MDEA) to chemically absorb CO?, regenerate it, and recycle it. The decarbonization efficiency is extremely high (up to 99%), but the amine liquid loss and thermal regeneration energy consumption are high, and the operating cost is not low.

3. 变压吸附（PSA）：利用不同气体在吸附剂（活性炭、分子筛）上的吸附差异，加压吸附、减压脱附。设备成熟、操作简单，但甲烷损失率偏高（通常5%-8%），且吸附剂需定期更换。

3. Pressure Swing Adsorption (PSA): Utilizing the adsorption differences of different gases on adsorbents (activated carbon, molecular sieves), pressure adsorption and pressure desorption are carried out. The equipment is mature and easy to operate, but the methane loss rate is relatively high (usually 5% -8%), and the adsorbent needs to be replaced regularly.

4. 膜分离法：利用CH?与CO?、H?S对高分子膜的渗透速率差异（可相差10-150倍）实现分离。投资省、运营成本低、日常维护方便，是近几年发展非常快的新技术。

4. Membrane separation method: utilizing CH? And CO?, H? The difference in permeation rate of S through polymer membranes (which can differ by 10-150 times) achieves separation. Low investment, low operating costs, and convenient daily maintenance are the fastest developing new technologies in recent years.

为什么膜分离正在“上位”？

Why is membrane separation taking over?

实际工程国产午夜亚洲精品午夜鲁丝片已验证：采用“碱液生物脱硫+气体渗透膜分离脱碳”组合工艺，净化后的午夜黄色视频在线观看H?S浓度可控制在20mg/m?以下，满足生物天然气入网标准。撬装式集成系统在500Nm?/d进气量条件下，稳定运行后CH?纯度可达97.88%，CO?低于2.5%，运行成本仅0.09元/Nm?。

The actual engineering case has been verified: using the combination process of "alkaline biological desulfurization+gas permeable membrane separation decarbonization", the purified biogas H2S concentration can be controlled at 20mg/m? The following meets the standards for the entry of biogas into the network. Under the condition of a 500Nm?/d air intake, the pry mounted integrated system can achieve a CH? Purity of 97.88% after stable operation, with CO? Below 2.5% and an operating cost of only 0.09 yuan/Nm?.

选型建议： 中小型工程选膜分离（性价比非常高），大型项目可考虑膜分离+PSA组合（进一步降低甲烷损失），有低成本热源的项目胺洗法仍有优势。没有“非常好”的技术，只有“非常合适”的场景。

Selection suggestion: Membrane separation (with the highest cost-effectiveness) is recommended for small and medium-sized projects, while membrane separation+PSA combination (further reducing methane loss) can be considered for large projects. Amine washing method still has advantages for projects with low-cost heat sources. There is no 'best' technology, only 'most suitable' scenarioses.

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