CEGT innovatively utilizes the chemical reaction heat in the chemical process as the power output source, converting the low-temperature heat in the original system into a heat source steam ranging from 110 ℃ to 190 ℃. This heat source steam is then used to drive the ammonia-water absorption refrigeration system. This new absorption refrigeration system can produce lower temperature below minus 0 ℃ and above minus 40 ℃, which is necessary for the production process. Thus, it achieves the goal of replacing the traditional compression refrigeration system, realizing a green, carbon-reducing, and sustainable technology.