Recently, Xi Jinping, General Secretary of the Communist Party of China Central Committee, President of the People's Republic of China, and Chairman of the Central Military Commission, issued important instructions on the establishment of China Resources Recycling Group Co., Ltd. He emphasized that the establishment of China Resources Recycling Group Co., Ltd. is an important decision and deployment made by the Party Central Committee to focus on improving the green, low-carbon and circular development economic system and comprehensively promoting the construction of a beautiful China. China Resources Recycling Group Co., Ltd. should fully, accurately and comprehensively implement the new development concept, thoroughly implement the comprehensive saving strategy, adhere to recycling, turn waste into treasure, adhere to innovation driven, open cooperation, focus on unblocking the chain of resource recycling, create a national and functional platform for resource recycling, promote the continuous improvement of the quality and level of the national economic cycle, and make positive contributions to comprehensively promoting the construction of a powerful country and national rejuvenation with Chinese path to modernization.

General Secretary Xi Jinping's deployment has once again pointed out the direction for us, making Jinggong Technology more firm - anchoring the vast blue ocean of green industries, jointly building a green, low-carbon and circular development economic system, and helping to promote the confidence and determination of high-quality development of green, renewable and circular industries.

Jinggong Technology has been deeply involved in the intelligent manufacturing of high-end equipment in China for more than 50 years, continuously moving towards "new" and "green" development, exploring green, low-carbon and sustainable sustainable recycling processes. Jinggong Technology has become a provider of 10000 ton chemical recycling polyester continuous production line equipment through self-developed, innovative and upgraded "chemical polyester recycling process and equipment technology", and has developed and customized the first 50000 ton PET recycling industrialization equipment in China.

Aerial View of Shaoxing Keqiao's Annual Production of 150000 Tons of Green Recycled New Materials Project Planning

This year, the main process unit of the 50000 ton project (referred to as the "JPET50 project") of Shaoxing Keqiao's 150000 ton per year green recycled polyester recycling project has started construction. The project is expected to be completed and put into operation in 2025. After the project is fully completed and reaches production capacity, it can process 220000 tons of waste textile products annually to achieve high-value recycling applications. The construction of this production line will effectively reduce dependence on petroleum resources and truly achieve a closed and sustainable cycle from waste textiles to recycled new materials.

Construction of the main process equipment for the JPET50 polyester recycling production line by Jinggong Technology has commenced

The green recycled new material polyester recycling production line project undertaken by Jinggong Technology uses polyester materials from waste textiles as raw materials. Through chemical decomposition technology - chemical cycle method, PET polyester undergoes depolymerization reaction under the action of heat and chemical reagents. After pretreatment, depolymerization, filtration separation, ester exchange, purification and other steps, low molecular weight products such as DMT (dimethyl terephthalate), BHET (ethylene terephthalate), ethylene glycol and other monomers or chemicals are generated. After separation and purification, the products are finally obtained into DMT and PET polyester new materials with a purity of up to 99.99%.

Using chemical methods to produce new recycled polyester from waste polyester materials, thus achieving a sustainable closed cycle from waste textiles and waste polyester to recycled new materials. This innovative process enables the recycling of waste polyester at the molecular level. For every 10000 tons of waste polyester recycled, it can reduce carbon emissions by 22000 tons and save 120000 tons of crude oil.

The production line equipment and process of the green recycling polyester recycling project are very complex, including chemical engineering, polymer materials and engineering, mechanical engineering, electrical automation engineering, fluid mechanics, thermal engineering, environmental engineering, structural mechanics, textile engineering and other fields.

The project has a large engineering quantity and a compact overall layout, including more than 1100 dynamic and static equipment, about 3900 instruments, more than 200 cabinets, more than 6500 valves of various types, about 68 kilometers of pipeline installation, 210000 inches of welding volume, and about 9000 automation control points. After completion, it will become the first 50000 ton production line in China, leading the world.

The difficulty of constructing this production line lies in matching and connecting the equipment, pipelines, and instruments that require a series of reaction processes, while systematically and comprehensively reflecting technological innovation.

The company has established a design basis based on a single line capacity of 50000 tons, adopting a chemical polyester recovery technology route to develop core process packages, design and manufacture key equipment, design intelligent control, and continuously innovate and optimize.

A team of over 100 master's and doctoral students led by academicians empowers and leads the company's multi-disciplinary professional and technical talents to collaborate and innovate, providing strong support for the construction of the production line. At the same time, we collaborate with professional institutes to leverage team strengths for cross disciplinary integration——

Optimize the overall process package design, carry out material balance calculation and energy balance calculation, improve the recycling efficiency of waste polyester, achieve DMT yield greater than 78%, and reduce energy consumption by 30%;

Simulation of Factory Construction for Green Recycling New Material Polyester Recycling Production Line Project

By adopting multi-stage centrifugal distillation and other process technologies, the purity and quality of R-DMT can reach 99.99%, which can meet the needs of other industries;

Perform flow field simulation and temperature field simulation on key processes such as reaction vessels and distillation towers, optimize engineering design work, and enable catalysts and raw materials to be quickly and uniformly distributed in solvents, effectively shorten reaction time, improve catalytic efficiency, and reduce reaction energy consumption;

Optimization simulation of reaction kettle

Optimize the equipment and 3D pipelines of the entire project production line globally, improve space utilization, and effectively reduce the construction cost of the entire line;

3D modeling and pipeline optimization design

The entire project production line adopts full DCS control, achieving efficient management of the entire production process, precise control of the reaction process, and improving the level of intelligence.

As of now, the company has applied for more than 30 patents and technological achievements in the green, low-carbon and circular development economic system, continuously consolidating the company's core technology moat through technological innovation and continuously enhancing its core competitiveness.

The horn of building a green, low-carbon and circular economic system with high-quality development has been sounded, aiming to look far ahead, pursue "new" and "green", and jointly build a green, low-carbon and circular economic system.

In the future, Jinggong Technology will always bear in mind the mission of "green equipment, intelligent manufacturing in China", deeply practice the concept of green development, strengthen technological innovation, management innovation, and business model innovation, continuously update and improve the technological level of resource recycling, empower sustainable development of industries with green equipment, help China build a billion level green recycling industry cluster, and jointly promote high-quality development of green, low-carbon, and circular economy.