Overview:
Butene oxidative dehydrogenation technology involves using butene and air as feedstocks under a steam atmosphere to produce butadiene through a catalytic oxidation and dehydrogenation reaction. Butadiene is primarily used in the production of various rubber products such as cis-polybutadiene rubber (BR) and styrene-butadiene rubber (SBR). Since 2010, research has been conducted on butene oxidative dehydrogenation to produce butadiene, leading to the development of an iron-based oxidative dehydrogenation catalyst with a composite spinel structure. Collaborating with SEI, a comprehensive energy-saving butene oxidative dehydrogenation technology was developed based on this catalyst, enabling an independent, dedicated, and high-quality source of butadiene without reliance on steam cracking or catalytic cracking facilities. The ODE-1000TM butene oxidative dehydrogenation catalyst and accompanying technology ensure this.
Comprehensive Technology for Butene Oxidative Dehydrogenation to Produce Butadiene:This gas-phase oxidation process leverages decades of domestic achievements in large-scale reactor technology and system integration, characterized by:
Advanced large-scale fixed-bed dehydrogenation process allowing operation at lower water-to-feed ratios, uniform temperature distribution, low energy consumption, minimal wastewater, and reduced capital costs.
Full-process heat integration technology maximizes energy utilization further reducing energy consumption.
Excellent product quality: High-selectivity catalysts minimize byproduct formation, yielding butadiene with 99.5% purity, less than 10 ppm dibutadiene impurities, and negligible amounts of acetonitrile, vinylacetylene, and moisture.
Flexible feedstock options: Catalysts exhibit strong resistance to impurities, compatible with C4 streams from conventional refineries or coal-to-olefins (MTO) byproducts.
Butadiene Catalysts:The flagship brand currently promoted is the ODE series catalyst, with key features including:
High activity: ODE catalysts operate at low temperatures, have broad ranges for gas hourly space velocity and pressure, and achieve high butene conversion rates.
High selectivity: Reduced deep oxidation products with ODE catalysts lead to significantly lowered COD in wastewater, decreasing material and energy consumption.
High stability: ODE catalysts offer service lives exceeding 18 months with single-pass cycles over 6 months, ensuring prolonged stable operation with consistent reaction performance.
Eco-friendly: Free of harmful and corrosive components, these catalysts do not contaminate the environment and are easy to handle.
Application and Promotion:This butene oxidative dehydrogenation technology was successfully commissioned in a 100,000-ton/year plant in Jiangsu in 2017, demonstrating advanced technical metrics. The ODE series butadiene catalysts have since been implemented in multiple plants across Jiangsu, Shandong, and other regions.
