Zhejiang Engineering Design Co., Ltd. is committed to providing clients with distinctive value-added services.
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AboutZhejiang Engineering Design Co., Ltd. (abbreviated as ZEDC in English) was established in 1958, originally known as the Design Department of Quzhou Chemical Plant.
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BlogZhejiang Engineering Design Co., Ltd. (abbreviated as ZEDC in English) was established in 1958, originally known as the Design Department of Quzhou Chemical Plant.
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ResearchThe “ZEDC Chemical Engineering Design Innovation Base” of Zhejiang University is a industry–university–research collaboration institution established through a donation from Zhejiang Engineering Design Co., Ltd. to the Zhejiang University Education Foundation.
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With匠心 and ingenuity, a new blueprint for nylon has been drawn.
Release time:
2025-02-18
Recently, Zhejiang Engineering Design Co., Ltd. received encouraging news from Hubei Sanning: its integrated amide‑nylon plant and caprolactam unit have both been successfully commissioned and are operating at full capacity in compliance with design specifications, underscoring the company’s robust engineering design capabilities in the caprolactam sector.
Total investment for this project 70 hundred million yuan, covering an area of 1200 mu, including an annual output of 40 10,000-ton caprolactam and polyamide chips, 20 Spinning of differentiated new polyamide materials with a capacity of ten thousand tons, 20 Ten thousand tons of nylon 66 . Among them, our institute was responsible for the design. 40 Ten thousand tons / The caprolactam plant is the largest single-unit caprolactam facility in China.
Hubei Sanning sent a congratulatory message: “Good news! The project designed by your company for our company…” 40 Ten thousand tons / The caprolactam plant has been successfully commissioned and is now operating at full capacity. Your company’s design team demonstrated a thorough understanding of the key technical aspects of the heterogeneous ammoximation process for caprolactam, overcoming numerous challenges and working overtime to deliver, with outstanding results, our country’s first domestically built unit. 40 Ten thousand tons / “The plant’s design assignment and its successful first‑time startup at full load once again underscore your company’s deep expertise and extensive experience in caprolactam process design.”
The project employs a heterogeneous amidoximation–solvent‑rearrangement process for caprolactam production, which represents the most advanced technological route currently available. This process offers numerous advantages, including low catalyst consumption, high conversion rates, reduced utility and raw material usage, superior product quality, minimal ammonium sulfate by‑product formation, and lower emissions of waste gases, wastewater, and solid waste. Compared with conventional processes, it eliminates the tert‑butanol recovery system and the toluene purification system, thereby reducing capital equipment investment.
The project team has always kept in mind its mission to “provide customers with distinctive value-added services,” continuously building on its experience and enhancing its engineering capabilities. Through close collaboration with the technology partners, it has also increased the production capacity of a single caprolactam unit from… 10 Ten thousand tons / Year, ultimately increased to the largest single unit in the country. 40 Ten thousand tons / Year. Steam consumption has also declined steadily, reaching an industry-leading level.
With the Saning amide nylon project and 40 Ten thousand tons / The successful startup of the caprolactam plant marks a further consolidation of Zhejiang Engineering Design Co., Ltd.’s capabilities in the engineering design of caprolactam facilities.
Blog Highlights
[2024-08-07]