Heat Transfer
Update on ambient heat transfer for storage tanks
Heat gain from ambient or heat loss to atmosphere is discussed in standards and technical publications.1, 2 However, the work on fluid/ambient thermal interactions rarely includes an important factor&..
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 Water Management: Best practices for RO operations
Widespread use of reverse osmosis (RO) technology in industrial applications began in the late 1980s, following the introduction of polyamide materials that had a significantly higher permeate flow an..
Alfa Laval wins order to supply heat exchangers at US petrochemical plant
The Alfa Laval OLMI heat exchangers will be used to increase the yield and recover energy in the production of ethylene, an important ingredient for the manufacturing of industrial chemicals and plastics products.
Mitigate heat exchanger corrosion with better construction materials
Better materials can provide optimal equipment service life, reduce maintenance, mitigate contamination by corrosion products and minimize heat loss due to fouling.
Mitigate fouling in crude unit overhead—Part 3
CASE STUDYThe basis for this case study is shown in Fig. 18; it is a crude unit with overhead heat integration. This is a one-drum overhead system with heat integration and no water wash. In an attemp..
Mitigate fouling in crude unit overhead—Part 2
Up to 50% of the refinery’s entire corrosion expense may occur in the crude unit. The root causes of the fouling and corrosion issues are often linked to the basic unit configuration choices, as ..
Improve solvent recovery in wax production
The solvent-recovery section of the deoiling unit for wax production consumes substantial energy. In this study, the effects of operating conditions (pressure), energy consumption and cost, and proces..
Update temperature control for a Claus unit with neural networks
The Natref oil refinery in Sasolburg, South Africa, had experienced refractory problems in the sulfur recovery unit’s (SRU’s) combustion chamber since startup (Fig. 1). Even though the SRU w..
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..
- Vertex Energy pauses renewable diesel output to switch back to fossil fuels, citing macroeconomic woes 5/10
- Citgo Petroleum reports Q1 profit of $410 MM 5/10
- Golden Pass LNG in discussions with contractor, may delay startup 5/10
- Shipping major and GCMD to pilot FAME-VLSFO marine biofuel bunker fuel in Singapore 5/9
- Diesel profit margins decline amid lower demand, more capacity 5/9
- World Energy and Boston Consulting Group sign agreement on SAF certificates 5/9
