The key to energy saving and emission reduction in chemical industry lies in the comprehensive utilization of resources and the promotion of added value of products. Give priority to with basic raw materials, extend chemical products, improve the added value of products. The chemical industry mainly includes phosphate mining, phosphate fertilizer, yellow phosphorus and deep-processed products of phosphorus, and the comprehensive energy consumption index of unit product is leading in China and close to the international level. However, there is still potential to develop new energy-saving technologies in the processes of medium and low grade utilization, grinding, phosphoric acid hemihydrate, phosphoric acid concentration, product granulation and drying, heat recovery and utilization in sulfuric acid production, and wastewater treatment and reuse. In particular, the development and application of wet-process phosphoric acid purification technology can not only replace hot-process phosphoric acid products with yellow phosphorus as raw materials, but also realize gradient grading utilization of wet-process phosphoric acid and improve the added value of products.
Examples: ammonium phosphate dry powder fire extinguishing agent and flame retardant series products, new fertilizers such as bulk mixed fertilizer (BB fertilizer) or various special fertilizers; Change the current situation that wet-process phosphoric acid is mainly used to produce phosphate fertilizer, gradually realize the step-by-step utilization of wet-process phosphoric acid, and develop fine phosphate products with different grades; Insist on promoting the development of extended products with yellow phosphorus as raw material and develop fine phosphorus series products; Encourage the development of high-end products with methanol as raw material, especially based on the regional market, and give priority to the development of methanol to dimethyl ether and methanol to oil to replace civil liquefied gas.