Successful trial run of 10,000-ton methanol-to-olefin industrial test equipment

Recently, China successfully launched its 10,000-ton methanol-based low-carbon olefin (MTO) industrial demonstration project. The first phase of testing achieved a methanol conversion rate exceeding 99.9%, with ethylene and propylene selectivity reaching up to 78%. This milestone paves the way for an annual production capacity of one million tons in China, marking a significant step forward in the MTO industrialization process. MTO, or Methanol-to-Olefins, is a chemical technology that converts methanol—either from coal or natural gas—into low-carbon olefins like ethylene and propylene. This process uses a fluidized bed reactor similar to catalytic cracking units. The research on MTO technology began as early as the 1970s and 1980s by the Dalian Institute of Chemical Physics under the Chinese Academy of Sciences. It was later included in the national "Eighth Five-Year Plan" key scientific projects. During this period, researchers completed critical technologies such as mechanism studies, lab testing, catalyst development, and pilot-scale expansion. Over 20 domestic and international patents were filed, establishing independent intellectual property rights. In August 2004, the Dalian Institute partnered with Shaanxi Xinxing Coal Chemical Technology Development Co., Ltd. and Luoyang Petrochemical Engineering Co., Ltd. to build a 10,000-ton MTO industrial test project. This initiative aimed to verify the MTO process, design, and catalyst performance, laying a solid technical foundation and accumulating valuable engineering experience for future large-scale plants. So far, the first phase has been completed, and the second phase will focus on optimizing process conditions to further improve olefin yields. The successful industrialization of the MTO project opens a new pathway for producing low-carbon olefins from non-petroleum resources, reducing reliance on oil-based feedstocks. This breakthrough is expected to significantly benefit China’s heavy chemical industry by enabling structural adjustments and promoting the development of more sustainable raw material routes. As the project moves forward, it holds great promise for the future of China's chemical sector and its energy strategy.

Filter Plate

The filter plate is an important accessory in the Filter Press. We can directly observe a whole piece of filter plate horizontally placed on the beam of the filter press with our eyes. The function of the filter plate is to attach the filter cloth to make the filter press The filter area increases, and during storage and filtration, solids are produced, thereby forming a filter cake. Let's talk about the relevant knowledge of the filter plate from various aspects, so that we can clearly understand the filter plate.

First, let's introduce the external shape of the filter plate. The shape of the filter plate is that both sides are concave in the middle, and there will be countless blind spots on the bottom surface. So why is it designed in a concave shape? The purpose is that during the filtering process of the filter press, the solids intercepted by the filter cloth can have a storage space. Then the design of the blind spot also has its own secret, which is to increase the friction between the filter plate and the filter cake when storing solids, and effectively support the filter cake. Another purpose is to make the dialysis water have a normal The circulation route is conducive to allowing water to flow out of the equipment quickly and increasing the working efficiency of the equipment. Among them, the large filter plate will also have several bosses with the same thickness as the filter plate. The purpose of this is to allow the pressure to be transmitted to each other well, and also to prevent the space of the filter plate from being able to withstand strong pressure. And broken and damaged.
Again, let's take a look at the material of the filter plate. Filter plates are made of cast iron and polypropylene. We mainly use polypropylene filter plates. Good polypropylene can resist oxidation and high temperature. When we buy again, we should pay attention to the material of polypropylene, which has the same shape, but some polypropylene materials are made of high-grade _ material, which will affect the quality of the filter plate.

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