Core Insights - The linear quenching heat exchanger's lower cone, a key component in ethylene cracking furnaces, has been in stable operation since its implementation in April, achieving performance standards and costing only one-fifth of imported products [1] - The successful domestic production of this component is expected to save over 15 million yuan in equipment renewal costs for the company [1] Summary by Sections - **Product Development** - The lower cone of the linear quenching heat exchanger operates in high-temperature and high-stress environments, necessitating regular replacements due to safety risks [1] - The core manufacturing technology and sealing solutions for this component have been tightly controlled by foreign manufacturers, leading to exorbitant procurement costs [1] - A dedicated research team was established in 2023 to tackle the challenge of domestic production, resulting in the successful development of a compatible domestic lower cone [1] - **Economic Impact** - The unit price of the domestic lower cone is approximately 10,000 yuan, which is less than 20% of the imported product's price [1] - The total cost for updating this component in a single cracking furnace has decreased from 4.2 million yuan to 840,000 yuan, representing an 80% reduction [1] - With all five similar cracking furnaces adopting the domestic component, the total cost savings exceed 15 million yuan, alleviating operational cost pressures [1]