PID Review for the Polycarboxylate Superplasticizer Plant in Shaanxi Yueneng’s 1 million-ton new materials project
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PID review for the polycarboxylate superplasticizer project in Shaanxi Yueneng’s 1 million-ton new materials project: On May 20th–21st, the detailed design PID review meeting for the polycarboxylate superplasticizer unit of Shaanxi Yueneng Fine Chemical Materials Co., Ltd. (referred to as “Yueneng Fine Chemicals”)’s 1 million-ton/year high-end chemical new materials project was successfully held at Xi’an Hualu Company. Ren Guoyu, the company’s chief engineer, attended the meeting and delivered a speech; industry experts and relevant personnel from the production technology department also participated. During the review, the participants conducted a detailed examination from various aspects such as the process flow, equipment layout, and equipment selection. Through thorough discussion and exchange, over 50 optimization suggestions were developed, providing key technical support for further improvement of the project design. Ren Guoyu emphasized that, as an important part of the 1 million tons per year high-end chemical materials project, the design of the polycarboxylate superplasticizer production facility will directly affect the production capacity and quality of the products. It is hoped that the experts will make full use of their professional expertise during the review meeting, exercise strict oversight, and provide valuable suggestions and opinions to help ensure the project is implemented successfully and to high standards in accordance with the planned schedule. The successful holding of this review meeting on polycarboxylate superplasticizers PID has provided guidance for further design work, and it also offers solid technical support and planning assistance for the construction of subsequent projects. Recently, the draft environmental impact assessment report for Shaanxi Yueneng Fine Chemical Materials Co., Ltd.’s “1 million tons per year high-end chemical materials project” was made public for comment. Project Name: 1 million tons/year high-end chemical new materials projectProject Type: New construction
Constructor: Shaanxi Yueneng Fine Chemical Materials Co., Ltd.
Construction Location: Yushen Industrial Zone, Yulin City, Shaanxi Province
Staffing and Operation Regulations: The labor force required is 860 people, with an annual operating time of 8,000 hours.
Construction Scope: It mainly includes a 400,000 tons/year DMTA production unit, a 200,000 tons/year ethylene oxide production unit, a 200,000 tons/year polyether superplasticizer monomer production unit, a 100,000 tons/year propylene oxide production unit, a 260,000 tons/year hydrogen peroxide production unit (at 27.5% concentration), an 80,000 tons/year acrylic acid production unit, a 120,000 tons/year butyl acrylate production unit, a 400,000 tons/year acrylate emulsion production unit, a 400,000 tons/year polycarboxylate superplasticizer production unit, as well as various supporting auxiliary facilities. Total project investment: The total investment for this project is 968,000 million yuan, of which 34,958 million yuan is allocated to environmental protection measures; this represents a ratio of 3.61%. Land area: The total land area required for this project is 99.89 hectares. Construction design: Site preparation for the project began in February 2024 ； It is planned to start groundwork and road construction across the entire site in June 2024; foundation work will begin in September 2024, equipment installation will start in 2025, and completion is scheduled for October 2026. The project uses purchased methanol and purchased toluene as raw materials; through a DMTA unit, mixed xylene, ethylene, and propylene are produced, with C4+ compounds and heavy aromatics as by-products. Mixed xylene is exported as the final product, while the olefins are further processed to produce ethylene oxide and various derivatives such as monomers for polyether-based water-reducing agents, propylene oxide, acrylic acids and their esters, acrylic ester emulsions, and polycarboxylate water-reducing agents. The main products of this project are 400,000 tons of acrylic emulsion and 400,000 tons of polycarboxylate superplasticizer.
As third-generation water-reducing agents, polycarboxylate-based water reducers are being used more and more widely in industrial and civil construction as well as infrastructure development, and their market share is also increasing. However, due to the significant regional variations in raw materials such as cement and fly ash, as well as issues like poor grading of sand and gravel, high mud content, and the use of manufactured sand, the adaptability of polycarboxylate-based water reducers is not ideal, resulting in fluctuations in their application. Polycarboxylate molecules are designable; by utilizing synthetic techniques, various types of functional polycarboxylate superplasticizer masterbatches can be prepared. By combining different masterbatches, the required basic performance characteristics can be achieved, and then, through the addition of auxiliary agents (retarders, air-entraining agents, defoamers, shrinkage reducers, thickeners, sludge inhibitors, etc.), high-performance superplasticizers that can meet the needs of different seasons, materials, mix proportions, and engineering projects can be obtained.