Neorius | Advanced Refining and Chemical Technologies

Complete technology for synthesizing 1,3-propanediol by propylene method

At present, the bio-based production of 1,3-propanediol (1,3-PDO) suffers from limited scale and high production costs, while chemical routes present significant technical barriers, which severely restrict the development of the polytrimethylene terephthalate (PTT) industry. The propylene-based 1,3-PDO production technology has been developed precisely to address these challenges.

This technology breakthroughs have been achieved in catalysts, process technology, and proprietary equipment. This includes the innovative development of coated oxidation catalysts, solid acid hydration catalysts, low-temperature liquid-phase hydrogenation catalysts, and key core equipment. By integrating selective oxidation of propylene, efficient hydration of acrolein, and liquid-phase hydrogenation of hydroxyaldehydes, this technology is characterized by mild reaction conditions, high product yield, low overall energy consumption, and minimal emissions of the "three wastes" (wastewater, waste gas, and solid waste).

Key Features & Benefits

Mild Reaction Conditions

The process employs fixed-bed reactors under atmospheric pressure for low-temperature hydration and medium-pressure for low-temperature hydrogenation. It operates continuously and efficiently with inherent safety.

High Product Yield

The use of advanced catalytic materials ensures high raw material conversion rates and high selectivity for the target product in each reaction step, improving the overall atom economy and ensuring high yields of 1,3-PDO.

High Efficiency and Environmental Friendliness

The entire process utilizes fixed-bed reactors with intelligent control systems, integrated with micro-catalytic intensification and energy-saving technologies. Water is used as the solvent and is recycled within the process, achieving near-zero wastewater discharge and enabling continuous low-energy-consumption production.

The propylene-based 1,3-PDO production technology meets the requirements for large-scale and cost-effective production of 1,3-PDO and supports the industrial-scale application of high-end polyester PTT. Once implemented, the technology will broaden the downstream value chain of propylene and aligns with the chemical industry's trend toward transformation, upgrading, and quality and efficiency enhancement, offering broad market application prospects.

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