Furnaces
Decrease tube metal temperature in vacuum heaters
Various options for reducing the TMT of a vacuum heater, such as changing the transfer line size and adding extra surface area in the radiation and convection sections, are examined here. The best option generally depends on the limitations under which the heater operates with regard to the process requirements and the downstream equipment limitations and flexibility.
HP Innovations
ClearSign marks NOx reduction milestoneClearSign Combustion Corp. has cost-effectively reduced NOx to a record-setting 3 ppm. The results indicate that ClearSign’s technology may overcome many of..
HP Innovations
Burner management system ideal for retrofitsPrincipal Technology Inc. offers a modern burner management system (BMS) (Fig. 1) specifically designed for the retrofit of legacy boilers, ovens, furnaces ..
Improve pressure drop calculations for saturated water lines
When saturated water flows through pipes and components, it flashes—thus increasing its specific volume and limiting the fluid flowrate. Due to these conditions, the calculation and design for pi..
Achieve uniform heat flux in a coker furnace
A delayed coker unit thermally cracks vacuum residue (VR) and converts it into products like liquefied petroleum gas (LPG), naphtha, gasoil and petroleum coke. A majority of the thermal cracking takes..
Enhance refinery profitability with modeling innovations
Several improvements are on the horizon, which will add powerful optimization capabilities into the process modeler’s simulation work space in areas like heat integration, column optimization and economics.
Optimize amine units and improve refinery profitability
The alkanolamine system in a refinery, better known as the amine unit, is used to remove hydrogen sulfide (H2S), carbon dioxide (CO2) and mercaptans (collectively referred to as acid gases) from proce..
HP Innovations
Training simulator to aid ethylene operatorsHyperion Systems Engineering has delivered to the Linde Group an operator training simulator (OTS) for ONGC Petro-additions Ltd.’s ethylene plant in Da..
How to select the ‘best’ fired heater for your operations
With the fluctuation of natural gas pricing, it is important to evaluate technically feasible solutions and choose the most economical alternative. Ultimately, this leads to a simpler and more cost-effective solution.
Successfully design fired heaters using ultra-low-NOx burners
Recent environmental regulations mandate that refinery and petrochemical industries reduce nitrogen oxide (NOx) emissions. Emissions legislations are constantly under review, and they differ from coun..
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