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沼气提纯的工作步骤
The working steps of biogas purification
沼气提纯的工艺流程主要包括以下几个步骤：
The process flow of biogas purification mainly includes the following steps:
原料准备。，将原料沼气送入水分离器以去除游离水和杂质，然后进入脱硫塔脱除硫化氢。这一步骤是必要的，因为硫化氢的存在会影响后续的提纯过程。
Preparation of raw materials. Firstly, feed the raw biogas into the water separator to remove free water and impurities, and then enter the desulfurization tower to remove hydrogen sulfide. This step is necessary because the presence of hydrogen sulfide can affect the subsequent purification process.
压缩和缓冲。脱硫后的沼气经过解吸气回收罐、压缩机前缓冲罐的缓冲后，进入沼气压缩机进行压缩。压缩的目的是提高气体流量和浓度，便于后续的处理。
Compression and buffering. After desulfurization, the biogas is buffered by the desorption gas recovery tank and the buffer tank in front of the compressor before entering the biogas compressor for compression. The purpose of compression is to increase gas flow rate and concentration for subsequent processing.
吸收。压缩后的沼气进入吸收塔，在这里，利用有机胺溶液与二氧化碳发生物理化学吸收反应，从而去除大部分二氧化碳。这一步骤可以有效降低沼气中二氧化碳的浓度。
Absorption. The compressed biogas enters the absorption tower, where it undergoes a physical and chemical absorption reaction with carbon dioxide using an organic amine solution, thereby removing most of the carbon dioxide. This step can effectively reduce the concentration of carbon dioxide in biogas.
脱水。经过吸收塔处理后的沼气进入脱水装置，将水露点降-65℃，以确保终产品的干燥度。
Dehydration. After being treated by the absorption tower, the biogas enters the dehydration unit, reducing the water dew point to -65 ℃ to ensure the dryness of the final product.
终处理和提纯。脱水后的沼气进入天然气压缩机进行压缩，然后进入加气柱给槽车加气，完成提纯过程。
Final processing and purification. The dehydrated biogas enters the natural gas compressor for final compression, and then enters the gas column to add gas to the tank truck, completing the purification process.
以上每个步骤都对终提纯效果有重要影响，特别是在去除二氧化碳方面，吸收法和压缩机法是关键技术。
Each of the above steps has a significant impact on the final purification effect, especially in the removal of carbon dioxide, where absorption and compressor methods are key technologies.
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This article is supported by biogas purification technology. For more detailed and exciting content, please click on our website https://www.hneee.net We will wholeheartedly provide you with satisfactory service.
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