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Asia's largest amino-phenol base completed its first phase of renovation
The first phase of the nitrochlorobenzene plant renovation at Liaoning Shixing Pharmaceutical Co., Ltd. has successfully completed its trial production, marking a significant milestone in the company’s plan to become the world's largest producer of para-aminophenol within three years. This achievement highlights the company’s commitment to expanding its global footprint and enhancing its production capabilities.
Liaoning Shixing is a leading fine chemical manufacturer specializing in pharmaceutical intermediates. It currently produces 16,000 tons of p-aminophenol annually, holding the top position in Asia and second globally. The company’s products are distributed across the country and exported to over 10 regions, including Europe, Africa, Southeast Asia, Japan, and Taiwan. With annual sales of p-aminophenol products ranking number one worldwide, the company is now aiming to increase its output to 30,000 tons per year within three years, positioning itself as the world’s largest production base for this key chemical.
Nitrochlorobenzene, a critical raw material in the production of p-aminophenol, has been a bottleneck for the company’s growth. The existing facility, which produced only 4,500 tons per year, was insufficient to meet rising demand. To address this, the company initiated a major renovation project, increasing the capacity of nitrochlorobenzene production to 90,000 tons annually. The first phase, with a capacity of 45,000 tons per year, has already been completed and passed trial production successfully.
Once fully operational, the new plant is expected to significantly reduce production costs, saving approximately 6 million yuan annually. This cost reduction will provide stronger support for the company’s expansion into larger international markets.
In addition to scaling up production, the new facility also features advanced technology. The crystallization process has been optimized by replacing the previous two-tower system with a single-tower method, reducing equipment investment and cutting crystallization time by nearly 10 hours. This improvement boosts work efficiency by around 10%. Furthermore, the vacuum system in the distillation tower now uses the production raw material as a circulating medium, achieving the necessary vacuum conditions while eliminating exhaust gas emissions and minimizing material loss. These innovations not only enhance efficiency but also reflect the company’s dedication to sustainable and environmentally friendly manufacturing.