【Haichuan Chemical Salary Updates】Liaoyang Petrochemical Company’s low-temperature waste heat recovery system put into operation

A low-temperature waste heat recovery system can recover and reuse the low-temperature thermal energy generated during industrial production processes. Liaoyang Petrochemical utilizes this system to recover the low-temperature heat generated during the operation of its xylene production unit. This heat can be used for power generation throughout the year, heating in winter, and cooling industrial processes. It also helps to save a large amount of coal and reduce emissions. Meanwhile, it effectively addresses the problem of high temperatures encountered by the xylene production unit during summer, thereby creating a green operational model for chemical plants that features energy savings, lower carbon emissions, and safe and economical operations. This approach provides a valuable model for optimizing energy use in the production systems of petrochemical enterprises.

A low-temperature waste heat recovery system can recover and reuse the low-temperature thermal energy generated during industrial production processes. Liaoyang Petrochemical utilizes this system to recover the low-temperature heat generated during the operation of its xylene production unit. This heat can be used for power generation throughout the year, heating in winter, and cooling industrial processes. It also helps to save a large amount of coal and reduce emissions. Meanwhile, it effectively addresses the problem of high temperatures encountered by the xylene production unit during summer, thereby creating a green operational model for chemical plants that features energy savings, lower carbon emissions, and safe and economical operations. This approach provides a valuable model for optimizing energy use in the production systems of petrochemical enterprises.

A low-temperature waste heat recovery system can recover and reuse the low-temperature thermal energy generated during industrial production processes. Liaoyang Petrochemical utilizes this system to recover the low-temperature heat generated during the operation of its xylene production unit. This heat can be used for power generation throughout the year, heating in winter, and cooling industrial processes. It also helps to save a large amount of coal and reduce emissions. Meanwhile, it effectively addresses the problem of high temperatures encountered by the xylene production unit during summer, thereby creating a green operational model for chemical plants that features energy savings, lower carbon emissions, and safe and economical operations. This approach provides a valuable model for optimizing energy use in the production systems of petrochemical enterprises.

Once the new system is in use, it will enable a heat utilization rate of 100% in winter and over 90% in summer, effectively making use of almost all the collected low-temperature waste heat. Calculations show that this system can save 120,000 tons of raw coal per year, reduce carbon dioxide emissions by 205,000 tons, and generate savings of nearly 100 million yuan in terms of energy efficiency. Original title: China’s largest low-temperature waste heat recovery system successfully connected to the grid for power generation

Welcome to participate in the discussions on this post ========================= [HaiChuan Discussion] Which petrochemical plants have undergone modifications for low-temperature waste heat recovery, and what are the results? https://bbs.hcbbs.com/thread-3011004-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum Website)

On March 18, the comprehensive utilization and renovation project of low-temperature waste heat at the Aromatics Plant of Liaoyang Petrochemical Company was successfully completed. At the handover ceremony, representatives from various departments of this company, CNPC First Construction Company, the Project Management Department, the supervision team, and the power plant attended. After examining the progress of the project on site, the representatives from all parties agreed unanimously to the handover of the project. The low-temperature waste heat utilization renovation project commenced on April 16, 2019; it includes new generator sets, air-cooling systems, hot water heat exchange systems, working fluid circulation pumps, etc., and represents the largest-scale system of its kind in China at present. Once completed, the project will effectively utilize the low-temperature waste heat from the two p-xylene units in the aromatic compounds plant, generating 3,000 kilowatt-hours of electricity per hour, thereby achieving energy savings and improved efficiency; it will also address the issue of high operating temperatures in the p-xylene units during the summer. According to the company’s division of responsibilities for this project, the construction is carried out by the Aromatic Hydrocarbons Plant, while the power plant is responsible for its operation once it is built. During the project construction, the management of the aromatic compounds plant attached great importance to it; relevant supervisors directed operations on-site, while the construction unit and the project’s management department worked closely together to implement various safety measures. Especially since the project resumed operations on March 3 this year, finding a way to ensure both epidemic prevention and control and the resumption of work have been carried out simultaneously has posed a challenge that tests the wisdom and capabilities of the aromatic hydrocarbons plant and the construction units; it is necessary to go all out and adopt scientific approaches to address this issue. With the company’s support, masks were promptly provided to all personnel involved in the construction work. The local workshops and the construction units worked together to set up epidemic prevention and temperature checking points. Adhering to a work style characterized by \"high standards, strict requirements, rapid pace, and focus on practical results,\" they made every effort and dedicated themselves wholeheartedly to ensure the smooth progress of the construction tasks ； Factories and workshops enforce strict supervision of safety in on-site operations; during critical periods, management staff take the lead in being on duty to ensure that construction activities are carried out safely and under control. During the pipeline pressure testing phase, the aromatic compounds plant deployed its most experienced staff to work closely with the construction team, taking advantage of favorable weather conditions to complete the testing of 21 pressure testing units efficiently, thereby creating the conditions for the project to be delivered on time. After 11 months of intensive construction, the main phase of the project has been successfully completed, and it is now in the preparation stage for commissioning. After the handover by CCCC, the Aromatic Hydrocarbons Plant will continue to be responsible for tasks such as obtaining the necessary certifications for the pressure vessels, and will also coordinate the commissioning process of the project to ensure its successful operation from the first attempt.