After a 13,000-hour test campaign with aqueous 30 wt% MEA (2-aminoethanol) solvent at the CO₂ capture pilot plant at Niederaussem, another long-term test was carried out as part of the ALIGN-CCUS project. This test ran for more than 12,275 hours with aqueous AMP/PZ (2-Amino-2-methyl-1-propanol/piperazine) solvent, named CESAR1 (3.0 molar AMP (~26.74 wt%) and 1.5 molar PZ (~12.92 wt. %)). A minimum specific reboiler duty of 2,970 MJ/t_CO2 was identified for the capture plant operation with four active absorber beds (total 16 m packing height) and intercooling (40°C). Neither a lower desorber pressure of 1.5 bar(a), instead of 1.75 bar(a), nor a change of the different positions of intercooling had a significant effect on energy consumption. Reduction of the active packing height to three beds (i.e., 12 m), resulted in a moderately higher specific energy demand (+100 MJ/t_CO2). Tests with CO₂ capture rates between 90 and 98% showed only a small increase of the specific energy demand at 95% (+20 MJ/t_CO2) and four active packings (98%: +250 MJ/t_CO2). The average solvent consumption of CESAR1 during 400 days of operation was 0.45 kg/t_CO2 and is lower than for MEA if the phase of accelerated non-linear degradation of MEA is taken into account. CESAR1 follows a slow-progressing linear degradation behavior; neither a critical metal ion concentration threshold value could be found that triggers fast degradation nor a correlation between accumulated trace components or metal ion concentrations in the solvent and the degradation rate was observed. Highly transient tests were conducted to investigate the dynamic behavior of the capture plant and subsequently special settings were chosen to stimulate high emissions for the investigation of aerosol-based emissions, connected with performance tests of several emission mitigation measures: single water wash, double water wash, acid wash, dry bed, wet electric precipitator and flue gas pre-treatment. When applying the dry bed configuration, emissions of AMP between 15 - 20 mg/Nm³, PZ between 3 - 7 mg/Nm³, and NH₃ below 3 mg/Nm³ were achieved.

在 Niederaussem的 CO ₂捕集试验工厂使用 30 wt% MEA（2-氨基乙醇）水溶液进行 13,000 小时的测试活动后，作为 ALIGN-CCUS 项目的一部分，进行了另一项长期测试。该测试使用名为 CESAR1（3.0 摩尔 AMP（~26.74 wt%）和 1.5 摩尔 PZ（~12.92 wt%）的水性 AMP/PZ（2-氨基-2-甲基-1-丙醇/哌嗪）溶剂运行超过 12,275 小时.%))。最低特定再沸器负荷为 2,970 MJ/t _CO2被确定用于具有四个活性吸收床（总填充高度 16 m）和中间冷却 (40°C) 的捕集厂操作。1.5 bar(a) 的较低解吸器压力，而不是 1.75 bar(a)，以及不同的中间冷却位置的变化都对能耗没有显着影响。将活性填料高度降低到三个床层（即 12 m），导致比能量需求略高（+100 MJ/t _CO2）。CO ₂捕集率在 90% 到 98% 之间的测试表明，在 95% (+20 MJ/t _CO2 ) 和四种活性填料 (98%：+250 MJ/t _CO2 )下，比能量需求仅略有增加。CESAR1 在运行 400 天期间的平均溶剂消耗量为 0.45 kg/t _CO2如果考虑到 MEA 的加速非线性降解阶段，则低于 MEA。CESAR1 遵循缓慢进行的线性退化行为；既没有发现触发快速降解的临界金属离子浓度阈值，也没有观察到溶剂中累积的痕量组分或金属离子浓度与降解速率之间的相关性。进行了高度瞬态测试以研究捕集厂的动态行为，随后选择特殊设置来刺激高排放以研究基于气溶胶的排放，并与几种排放缓解措施的性能测试相关联：单水洗、双水洗、酸洗、干床、湿式电除尘器和烟气预处理。在应用干床配置时，^{如图3所示}，实现了3-7mg/Nm ³之间的PZ和低于3mg/Nm ^{3 的}NH ₃。