该中试装置是西南油气田公司处理厂改造的重点关注项目，也是西南分公司深入推进处理厂改造及尾气治理的重要探索项目，主要用于捕集引进天然气净化厂克劳斯尾气处理装置吸收塔顶尾气。

针对引进天然气净化厂吸收塔顶尾气中高含二氧化碳实际，西南分公司立足60余年天然气处理经验和在长岭1号气田地面建设工程中积累的设计建设经验，提出了“吸附剂高疏水性、高吸附容量及长使用寿命（2高1长）”研发方向，并从2023年5月开始联合西南油气田公司等单位进行中试装置的研发和设计攻关。2023年10月，中试装置橇装设计顺利完成；2024年3月，中试装置制造完成并开始安装调试，4月初实现一次投运成功。经过处理，二氧化碳一段捕集率达95.72%，解吸气中的二氧化碳纯度达到95%。

在研究过程中，西南分公司研发出疏水率高达98.8%的新型疏水性吸附剂，相比传统吸附剂，疏水性提高约30倍，可替代脱水装置，降低装置能耗。针对超低压条件，西南分公司创新采用碱性处理和物理络合吸附技术，持续提升吸附剂吸附容量，相比普通活性炭，其吸附能力提高15~20%，进一步降低装置能耗；针对常规吸附剂易在孔道内累积产生硫酸盐或硝酸盐难题，西南分公司创新采用改性处理技术，进一步延长了吸附剂使用寿命。与化学法碳捕集和常规变压吸附法技术相比，该装置流程更短、设备更少、能耗更低。

The pilot plant is the key project of the treatment plant transformation of Southwest Oil and Gas Field Company, and is also an important exploration project of the Southwest Branch to further promote the treatment plant transformation and exhaust gas treatment. It is mainly used to capture the exhaust gas from the top of the tower at the Klaus exhaust treatment device of the natural gas purification plant.

In view of the high carbon dioxide content in the tail gas at the top of the absorption tower of the natural gas purification plant, based on more than 60 years of natural gas treatment experience and the design and construction experience accumulated in the ground construction project of Changling No. 1 gas field, Southwest Branch proposed the research and development direction of "high hydrophobic adsorbent, high adsorption capacity and long service life (2 high and 1 long)". And from May 2023, it began to cooperate with Southwest Oil and Gas Field Company and other units to carry out research and development and design of pilot plants. In October 2023, the pilot device skid design was successfully completed; In March 2024, the pilot plant manufacturing was completed and installation and commissioning began, and a successful operation was achieved in early April. After treatment, the capture rate of carbon dioxide in the first stage reached 95.72%, and the purity of carbon dioxide in desorption reached 95%.

In the research process, the Southwest Branch developed a new hydrophobic adsorbent with a hydrophobic rate of 98.8%, which is about 30 times more hydrophobic than the traditional adsorbent, and can replace the dehydration device and reduce the energy consumption of the device. For ultra-low pressure conditions, the Southwest Branch innovatively adopts alkaline treatment and physical complex adsorption technology to continuously improve the adsorption capacity of the adsorbent. Compared with ordinary activated carbon, its adsorption capacity is increased by 15~20%, and the energy consumption of the device is further reduced. In view of the problem that the conventional adsorbent is easy to accumulate sulfate or nitrate in the pore, the Southwest Branch innovatively adopts the modified treatment technology to further extend the service life of the adsorbent. Compared with chemical carbon capture and conventional pressure swing adsorption technology, the device has a shorter process, less equipment and lower energy consumption.