During the chemical production process, a large amount of waste heat is generated, such as heat dissipation from reaction vessels and exhaust gas from distillation towers. The refrigeration system driven by industrial waste heat can recover and convert this waste heat into cold energy, which can be used for cooling, crystallization, separation and other processes of chemical products. For example, in urea production, the high-temperature gas discharged from the synthesis tower is recovered through a heat exchanger to drive an absorption refrigeration system, providing cooling capacity for the crystallization of urea solution and improving product quality and production efficiency.