【Major Industrial Equipment in the Chemical Industry】The flue gas carbon capture project for waste-to-energy plants, model 456—2022, has been successfully put into operation
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The last edit to this post was made by Desert Fish on 2022-7-27 at 16:53. In order to actively support the **\"Dual Carbon\" strategy**, Longjing Environmental Protection has taken proactive actions and pursued innovation; it has entered into a technical partnership with Huaneng Group’s Clean Energy Technology Research Institute. Utilizing the Pinghu Lingang Energy Waste Power Plant, they have developed China’s first pilot project for amine-based carbon capture of flue gases from waste incineration. Recently, this project completed its 168-hour trial period and was successfully put into operation. Led by the company’s Carbon Neutrality Research Institute, this project brought together various departments such as those responsible for electrostatic dust removal and denitrification, dry flue gas desulfurization, electro-bag and tube-type systems, Xi Kuang Environmental Protection, wet flue gas desulfurization and denitrification, energy management, and electrical control to work together on its development. A project development team was established to address numerous challenges, including the fact that this was a new type of project, the complex composition of the flue gases generated in waste-to-energy plants, recurring pandemics, and persistent high temperatures. By overcoming these difficulties, the team completed the entire process, from process design and detailed system planning, to 3D layout design, equipment selection and procurement, as well as system installation and commissioning.
This carbon capture process system uses high-efficiency packed absorption towers and desorption towers as its core processing units. By optimizing the process design and equipment layout, it achieves efficient integration of the flue gas system, the organic amine absorption liquid circulation system, the cooling and heat exchange system, as well as the steam and drain systems, thereby significantly reducing the space required by the system. Additionally, it is equipped with a high-precision automatic control system for flue gas carbon capture developed independently by Longjing, which not only improves the efficiency of CO2 absorption and the reliability of operation but also facilitates precise control over various operational parameters of the carbon capture device as well as cost management. This enhances the economic viability, stability, and applicability of the CO2 capture device. The operation results show that, under conditions of a CO? concentration of around 8% in the flue gas from waste incineration, the system’s CO? capture efficiency can reach over 95%, while the energy required for regeneration is 2.6 GJ per ton of CO?. These results meet the requirements specified in the system design, with all indicators reaching advanced levels in China. Through the implementation of the Pinghu waste incineration flue gas CO2 capture demonstration project, the company has acquired the capabilities for designing flue gas carbon capture projects using the organic amine absorption method, selecting appropriate equipment, carrying out construction and installation, as well as providing commissioning services. These capabilities can be applied widely in carbon capture projects across industries such as power generation, steel manufacturing, cement production, and the chemical industry.
The amine chemical absorption method is currently the most mature technology for capturing carbon dioxide from flue gases after combustion, but it suffers from high energy consumption in the capture process. Developing new absorbents to replace traditional MEA absorbents is an important way to reduce energy consumption. Based on the compositions of amine absorbents reported in published literature in recent years, this article classifies them into four categories: single absorbents, mixed amine absorbents, two-phase absorbents, and non-aqueous absorbents. It also introduces the technical characteristics, current research status, and existing problems of these four types of absorbents. Mixed amines combine the advantages of different individual amines, enabling them to meet the requirements of high absorption rate, high absorption capacity, and low energy consumption ； Phase-change absorbents and anhydrous absorbents represent the next generation of absorbents with great potential, but further research and improvement are still needed. In comparison, mixed amine-type absorbents are more mature, giving them an advantage for industrial application in the short term.
Longjing has indeed been there, to Longyan, for the Gutian Conference. Keep going:victory: