team committed to design, manufacture, and deliver a more robust duct burner system to the Hengli Petrochemical Refinery by May 8, 2020, within 30 days of the receipt of order. Zeeco’s team initiated procurement within one day of order, and shop manufacturing drawings were completed by April 15, 2020. Daily team meetings between Zeeco’s US and China offices ensured full clarity and timely execution of work. Several manufacturing inspections were conducted throughout the project via live-streamed video with Zeeco’s global director of quality control, as well as inspection, engi- neering, and design personnel, to ensure correct fabrication and world-class equipment quality. Technology The burners chosen for this project supply heat via an array of Zeeco DB-series duct burners which deliver even heat- ing across the full cross-section of the air stream. The duct burner array was designed to fit the existing vessel and withstand the high operating pressures and temperatures required by the process. Each PDH air heater has eight linear burners with gas runner assemblies designed to fire inside the unit ductwork. The system has been designed for airflow distribution across the duct to be within +/- 5%. The burners were equipped with a stainless steel Zeeco ARGS-1 natural gas-fired premixed igniter mounted through the main burner front plate. The premix design enables the ARGS-1 igniter to fire in the harshest PDH air heater conditions with a heat release of 90,000 Btu/hr. The duct burners will increase the temperature of preheater air from approximately 368°C to 704°C. The Zeeco duct burners are characterised by their high heat release and ability to handle a wide variation of fuel gas compositions (see Tables 1 and 2 ). The duct burner array was designed to optimise the air temperature/flow distribu- tion and necessary pressure drop requirements. Results The first train of eight duct burners was delivered to the Hengli refinery on April 30, beating Zeeco’s original deliv- ery target by eight days, and the second train of eight duct burners was delivered on May 8, as promised. The quick turnaround allowed the Hengli facility to have a more robust duct burner solution ready to install in the PDH air heater during a scheduled turnaround. As of April 1, 2022, both units were running successfully.
Now available for commercial use, the LEAP technology can be applied to both new and existing heaters to help decarbonise some of the most carbon-intensive petrochem- ical manufacturing processes. Some of the technology’s enhanced features include: • Lower fuel firing • Much higher thermal efficiency • Implementation in existing heaters with minimal mechani- cal changes • Ability to combine with selective catalytic reduction sys- tems to minimise nitrogen oxides emission. For more than half a century, Lummus has designed and supplied a wide range of fired heaters and heat exchangers for the petrochemical and refining industries, which include refinery heaters, steam superheaters, heaters for delayed coking units and steam reformers, and SRT (short residence time) pyrolysis heaters for ethylene production. Technip Energies acquires technology for polymer production Technip Energies Acquires Biosuccinium Technology from DSM for bio-sourced and fully biodegradable polymers production, adding a technology solution to its Sustainable Chemicals portfolio. This technology synergises with recently developed proprietary bio-polymer technologies and provides a commercially referenced production of bio- based succinic acid (bio-SAc) that serves as feedstock for production of polybutylene succinate (PBS). PBS itself is fully biodegradable and, if based on bio-SAc, is an ideal bio-based sustainable packaging material for food contact applications. It addresses consumers’ and governments’ concerns for better materials with lower carbon footprints and environmental impacts. The purchase includes a wide range of patent families and proprietary yeast strains, which have been demonstrated in production facilities of licensees on a large scale. Clariant awarded contract to supply catalyst for maleic anhydride plant Clariant has been awarded a major contract by Wanhua Chemical Group to supply catalysts for its new maleic anhy- dride plant, which will be one of the largest in the world. Designed to produce 200 kilotons of maleic anhydride annually, the plant will rely on Clariant’s SynDane catalyst for the production process. The facility will be located in Yantai city, Shandong province, and is scheduled to com- mence operation in 2023. The Wanhua plant will be the first to use a new maleic anhydride production technology. Compared to conventional technology, this improves production efficiency and reduces power consumption. The technology licensor Conser esti- mates a reduction in energy consumption of 2.5 to 3.0 MW per hour of production at the Wanhua plant. Assuming 8,000 hours of production per year, Wanhua’s annual energy sav- ings will amount to 20,000 to 24,000 MWh.
Zeeco Contact: Mandy Vavrinak Email: mandy@crossroads-team.com
Lummus accelerates CO 2 reduction goals through air preheater innovation Lummus Technology announced major advancements to the Lummus External Air Preheater (LEAP) technology. The latest innovations can significantly reduce CO₂ emissions from cracking heaters at ethylene plants as well as other fired heaters.
102
PTQ Q4 2022
www.digitalrefining.com
Powered by FlippingBook