The Institute of Computer and Chemical Engineering of Qingdao Institute of Chemical Technology and Qilu Plasticizer Co., Ltd. have successfully developed a continuous method of DBP manufacturing technology and realized industrialization through the cooperation of production, learning and research. Not long ago, they passed the appraisal commissioned by the Shandong Provincial Petrochemical Office commissioned by the Shandong Provincial Science and Technology Commission. To reach the international advanced level.
DBP (dibutyl phthalate) is an important plasticizer widely used in rubber and plastics. Medicine and other industries. In recent years, the rapid development of PVC industry has greatly increased the market demand for DBP. Since domestic production capacity has not been able to meet market demand, 40% of DBP needs to be imported. At present, 13 domestic manufacturers are adopting the "batch method" to produce old technology with small scale, high unit consumption, serious pollution, and failure to achieve clean production, which seriously restricts the development of DBP production. After two years of cooperation, the Institute of Computer and Chemical Engineering of Qingdao Institute of Chemical Technology and Qilu Plasticizer Co., Ltd. have adopted continuous esterification, continuous de-alcoholization, continuous de-etherification and other new processes, and have successfully developed using computer simulation and process integration and advanced technologies. Out of DBP continuous chemical production technology completely replaced the backward batch production process.
The appraisal opinion holds that this technology is the first in the country. As the current domestic demand for DBP grows at a rate of 16% per year, this continuous-process DBP manufacturing technology has broad application prospects.

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