By performing a series of purification treatments such as desulfurization, decarbonization, and dehydration on biogas, clean and pollution-free natural gas can be produced, greatly increasing its combustion heat value. Decarburization tail gas can also produce liquid carbon dioxide, which can fully and effectively utilize biogas without generating secondary pollution.
According to the requirements of the final target product, using our company's technology, biogas can be converted into natural gas and directly transported to the natural gas pipeline network as civilian gas; Or CNG (compressed natural gas for vehicles) is made by compressing natural gas to 20~25MPa as vehicle fuel; The product gas can also be deeply cooled and liquefied to ultimately produce LNG (liquefied natural gas).
技术转让、工程设计、部分硬件或工程总承包。联络：六鉴投资网
Technology transfer, engineering design, partial hardware or general engineering contracting. Contact: Liujian Investment Network
二、工艺概述
2、 Process Overview
沼气制CNG的过程，其实就是一系列净化过程及终升压过程。
The process of producing CNG from biogas is actually a series of purification processes and the final boosting process.
1.硫含量过高则会腐蚀设备和管道，降低其使用寿命；
1. If the sulfur content is too high, it will corrode equipment and pipelines, reducing their service life;
2.CO2存在量越多则气体热值越低；
2. The more CO2 there is, the lower the calorific value of the gas;
3.水的存在会造成管道腐蚀，形成水合物限制或堵塞管线中气体的流动，甚会使燃烧器熄火；
3. The presence of water can cause pipeline corrosion, form hydrates to restrict or block the flow of gas in the pipeline, and even cause the burner to shut down;
4. As biogas is generated in an anaerobic environment, the O2 content generally does not exceed the standard, but it should be noted that the CNG standard requires that the O2 content after purification should not exceed 0.5%;
During the transportation of natural gas pipelines, water condenses into liquid at low temperatures, which reduces the cross-sectional area of the pipeline, increases the resistance and energy consumption during the transportation process, and even freezes and blocks the pipeline; The presence of external water can accelerate the corrosion of equipment by sulfides;
6.其它微量的N2、H2等在不影响天然气标准要求的热值时，可不予脱除。
6. Other trace amounts of N2, H2, etc. may not be removed when they do not affect the calorific value required by natural gas standards.
According to the analysis of relevant parameters and product requirements of raw material biogas, the raw material biogas can be sequentially subjected to processes such as desulfurization, pressurized drying, decarbonization, and CNG pressurization to obtain the product: compressed CNG for vehicles.
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2023-05-27
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