A novel concept for online monitoring of nitrosamines, solvent amines and their degradation products in amine absorber emissions to air was demonstrated at the Tiller CO₂-lab pilot facility. The monitoring concept is based on SINTEF patent No. PCT/EP2011/073557. The measurement method applies gas sampling by capture of analytes in a condensate stream from a single stage condensate collector unit. An improved design for the SINTEF prototype for online gas and liquid measurements has been established as part of the CCUS-ALIGN project. The new design has low complexity and improved robustness, making it applicable as integrated part of industrial monitoring systems. The established prototype was successfully tested for monitoring of trace gas emission from a CO₂ capture pilot plant, demonstrating measurements of nitrosamines at levels far below the lower detection limits of commercial industrial online analyzers. Results from testing of a condensate collector prototype indicate high capture efficiency for analytes of interest, including analytes present in aerosols during operation conditions where the absorber emit mist to the atmosphere. The measurement concept has potential for significantly reducing the costs related to manual gas measurements for critical trace gas components in plant operation. Application of the concept can enable continuous measurements of nitrosamines and other critical trace gas analytes in the emissions to air not currently available in absorption-based CO₂ capture processes.

在 Tiller CO ₂实验室试验设施中展示了在线监测胺吸收剂排放到空气中的亚硝胺、溶剂胺及其降解产物的新概念。监控概念基于 SINTEF 专利号 PCT/EP2011/073557。该测量方法通过从单级冷凝液收集器单元捕获冷凝液流中的分析物来应用气体采样。作为 CCUS-ALIGN 项目的一部分，已经建立了用于在线气体和液体测量的 SINTEF 原型的改进设计。新设计具有低复杂性和更高的鲁棒性，使其适用于工业监控系统的集成部分。已建立的原型已成功测试用于监测来自 CO ₂的痕量气体排放捕获试验工厂，展示了远低于商业工业在线分析仪检测下限的水平的亚硝胺测量。冷凝收集器原型的测试结果表明，对感兴趣的分析物具有高捕获效率，包括在吸收器向大气排放雾的操作条件下存在于气溶胶中的分析物。该测量概念有可能显着降低与工厂运行中关键痕量气体成分的手动气体测量相关的成本。该概念的应用可以实现对空气排放物中亚硝胺和其他关键痕量气体分析物的连续测量，目前在基于吸收的 CO ₂捕获过程中尚不可用。