Chemical absorption carbon capture technology is the most promising flue gas carbon dioxide capture technology for large-scale industrial application, but it has the problem of high energy consumption. The development of low-energy carbon capture absorbers can effectively reduce the impact of the capture process on the reduction of power generation efficiency. In this paper, combined with the characteristics of low partial pressure of carbon dioxide in gas-fired power plants, an absorbent with industrial application potential was screened out by laboratory absorption-desorption test and physicochemical property test. The desorption rate of this absorbent is nearly twice that of 30% aqueous ethanolamine (MEA). In order to verify its performance and economy on the industrial system, a long-term operation experiment was carried out on the carbon dioxide capture centralized test unit of a natural gas power plant in North China. The experimental results show that the carbon dioxide capture rate of the long-term operation of DTC01 absorbent on the pilot plant is not less than 90%, and the regeneration energy consumption is 3.59 MJ/kg, which is nearly 20% lower than the minimum energy consumption value of MEA and the power consumption is reduced by nearly 9%. Due to the height of the packing layer of the absorption tower of the pilot plant, DTC01 cannot achieve the theoretical maximum carbon dioxide load in the pilot platform, resulting in higher regeneration energy consumption than laboratory test results, which can further improve its performance and economic benefits on industrial systems through process optimization.