On December 17, jointly developed by Tsinghua University and Shandong Qingda New Energy Co., Ltd., with independent intellectual property rights of 10,000 tons / year fluidized bed methanol dehydration to produce dimethyl ether industrial pilot plant, in the Funan County Industrial Park, Shandong Province. A successful commissioning test successfully produced a dimethyl ether product with a purity of more than 99%. The device reached the design capacity and was put into full-load operation.
The industrial pilot plant uses a component fluidized bed reactor and a dedicated gas phase methanol dehydration catalyst. The perfect combination of advanced reactor design and high-efficiency catalyst not only greatly improves the catalytic reaction efficiency of the dimethyl ether synthesis process, but also improves the temperature control capability of the dimethyl ether synthesis reactor. The operating pressure of the fluidized bed dimethyl ether synthesis reactor is 0.8 to 1.0 MPa, the operating temperature is 270°C to 290°C, and the reactor axial temperature difference is less than 10°C. Due to the excellent temperature control performance of the fluidized bed reactor and the use of micron-sized particle catalysts, the single-pass conversion and selectivity of the dimethyl ether synthesis process are greatly improved compared to the fixed bed. Under the condition that the catalyst loading is reduced by half, the single-pass conversion of the catalytic synthesis reaction can still reach over 85%, and the selectivity of the reaction is close to 100%.
The new technology has the advantages of simple structure, low investment, stable operation, low operating cost, small catalyst loading, easy handling, and easy large-scale operation.
The industrial pilot plant uses a component fluidized bed reactor and a dedicated gas phase methanol dehydration catalyst. The perfect combination of advanced reactor design and high-efficiency catalyst not only greatly improves the catalytic reaction efficiency of the dimethyl ether synthesis process, but also improves the temperature control capability of the dimethyl ether synthesis reactor. The operating pressure of the fluidized bed dimethyl ether synthesis reactor is 0.8 to 1.0 MPa, the operating temperature is 270°C to 290°C, and the reactor axial temperature difference is less than 10°C. Due to the excellent temperature control performance of the fluidized bed reactor and the use of micron-sized particle catalysts, the single-pass conversion and selectivity of the dimethyl ether synthesis process are greatly improved compared to the fixed bed. Under the condition that the catalyst loading is reduced by half, the single-pass conversion of the catalytic synthesis reaction can still reach over 85%, and the selectivity of the reaction is close to 100%.
The new technology has the advantages of simple structure, low investment, stable operation, low operating cost, small catalyst loading, easy handling, and easy large-scale operation.