Comparison between UOP’s MTO and Dalian Institute of Chemical Physics’ DMTO technologies

Thread Content

This post was last edited by lzy4225925 on 2015-12-22 at 16:02. The current MTO technologies include UOP’s MTO/OCP technology, the DMTO (Yan’an Energy Chemicals) and DMTO-II generation (Pucheng) technologies developed by the Dalian Institute of Chemical Physics, Sinopec’s SMTO technology (Zhongyuan Petrochemical, Pre-deethanization), and Shenhua’s SHMTO technology (Shenhua Xinjiang). I. Industrialization Process 1. UOP’s MTO/OCP technology (1) In January 2008, Viva Methanol licensed the MTO/OCP process for use in the petrochemical complex in Lekki, Nigeria; the Lekki complex was the world’s first industrial facility to utilize this technology. Viva Methanol Company is a subsidiary of Eurochem Technologies (Singapore). Production is expected to begin in 2012, with an annual output of 130,000 tons of ethylene and propylene. (2) Fujia Petrochemical Dalian MTO project. In November 2010, Dalian Fujia Petrochemical Co., Ltd. planned to launch a large-scale chemical project that would feature an MTO unit capable of producing 3.6 million tons of methanol per year, along with a steam cracking unit that could produce 600,000 tons per year (both figures are based on the feed volume). Eleven additional processing units would be part of this facility, and the MTO unit utilized UOP’s MTO technology. (3) Huisheng Company’s Nanjing MTO project. Huisheng Clean Energy Company plans to build a methanol-to-olefins plant with a capacity of 295,000 tons per year (based on 600,000 tons of methanol per year), with commissioning expected in 2013. This MTO unit utilizes technology from UOP. A business contract for this project was signed in March 2011. In addition, Jutai Energy, Shandong Yangmei Hengtong Chemical, and Jiangsu Sierbang Petrochemical Co., Ltd. have also chosen UOP’s MTO technology. 2. DMTO and DMTO-Ⅱ technologies of the Dalian Institute of Chemical Physics (1) The Shenhua Baotou 600,000-ton/year olefins project adopted the DMTO technology and went into operation on August 8, 2010; it was the world’s first commercial demonstration plant of this type. (2) The 680,000 tons per year olefin project in Pucheng, Shaanxi will use the DMTOⅡ technology, and such units have already been built and put into operation. In addition, several projects in China have adopted the DMTO technology, such as Ningbo Heyuan (now Fude), Shandong Shenda, China Coal Yulin, Yanchang China Coal Yulin, and Yanchang Fuxian, among others. II. Technical Features 1. UOP’s MTO/OCP technology (1) The MTO reaction section utilizes riser fluidized bed reactors and regenerators ； OCP uses a fixed-bed reactor ； (2) UOP’s MTO-100 catalyst has a low wear rate ； (3) The pressure in the reaction system is around 0.276 MPa, which helps to reduce the volume of the reaction-recovery system’s equipment, decrease the amount of catalyst required, and lower both the equipment investment and the initial cost associated with purchasing catalyst ； (4) Reaction temperature 420-480℃ ； (5) The propylene/ethylene ratio can be adjusted flexibly ； (6) Adopt DME recovery technology to reduce raw material consumption ； (7) Through the OCP process, the C4 components are converted into propylene and ethylene, improving the utilization rate of carbon; the optimal amount of methanol required per ton of olefins is 2.54 tons. 2. The DMTO/DMTO-Ⅱ technology of the Dalian Institute of Chemical Physics: (1) Fluidized bed reactors and regenerators are used in the reaction section, and fluidized bed reactors are also employed for the conversion of C4 compounds ； (2) Catalyst D803C-Ⅱ01 ； (3) Reaction system pressure: 0.05 MPa ； (4) Reaction temperature 460-520℃ ； (5) The propylene/ethylene ratio can be adjusted within a certain range ； (6) Through DMTO II technology, carbon utilization can be improved and raw material consumption reduced; 2.67 tons of methanol are consumed per ton of olefins.