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Recently, news came from the Ningdong Energy and Chemical Industry Base in Ningxia: **The list of candidates for the procurement of methanol reaction gas heat exchangers for the MTO unit in the MTP upgrade project of Energy Group Ningxia Coal Industry Co., Ltd. has been released. The first winning bidder is Liaoning Jiabao Petrochemical Equipment Co., Ltd. The technical upgrade project for Ningxia Coal Industry’s MTP process has been approved, with a total investment of around 11.8 billion yuan. The existing MTP units were built and put into operation in 2010 and 2014 respectively, and their overall energy consumption is at a relatively high level. Under the backdrop of the \"dual carbon\" strategy, high energy consumption becomes a significant drawback of this device. The strategy adopted by Ningxia Coal Industry is to shut down two old units, adopt the third-generation DMTO technology developed by the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and build a new methanol-to-olefins plant with an annual production capacity of 3.6 million tons. Adjustments to the technical approach will result in changes to the entire product structure. Once the transformation is complete, Ningxia Coal Industry will no longer be limited to the production of polypropylene. The newly added 1.35 million tons per year of olefin separation facility, along with facilities for producing high-end polyolefins such as 100,000 tons per year of EVA, 300,000 tons per year of LDPE, and 300,000 tons per year of HDPE, will bring about a fundamental change in the product structure – shifting from a focus on single products to a variety of products, and from products with low added value to those with high added value. This strategic transformation will have a crucial impact on the company’s core competitiveness over the next decade. Returning to the situation regarding the three heat exchangers. The equipment is named Methanol - Reaction Gas Heat Exchanger, with the tag numbers E - 311202A~C. The heat exchanger has a diameter of approximately 4 meters, and its tube sheet can be up to 400 millimeters thick. It is manufactured using the process of surfacing stainless steel onto chromium-molybdenum steel forgings. This device is one of the core components of the DMTO unit, used for gas-to-gas heat exchange between liquid methanol vapor and reaction gas. Liaoning Jiabao Petrochemical Equipment Co., Ltd. was able to win the bid thanks to its A1 qualification for the manufacture of special equipment, ASME certification, and its track record in supplying similar equipment for DMTO units. At present, the main structures of the 7 key individual components of the project have been completed; the 100-meter chimney was built 23 days ahead of schedule, and the lifting work for the 9 oversized equipment has been finished. The project has moved from the civil construction phase to the installation phase of key equipment. As supporting facilities, two methanol storage tanks with a single-tank capacity of 30,000 cubic meters have been put into use in advance. It is expected that starting from April 2027, the major production units will gradually meet the conditions for intermediate handover ； In April 2028, the project will be fully completed. After four years and an investment of ten billion, the company achieved a significant transformation. Excerpt from Chemical Industry Account