Hydrogen sulfide exists mostly as a detrimental byproduct in the gas processing units well refineries, and it must be eliminated from natural streams. In Sulfur Recovery Unit (SRU), hydrogen is converted into elemental sulfur during modified Claus process. Efficiency of recovery significantly depends on reaction furnace temperature. this work, effect oxygen acid enrichment temperature according...

Organometallic chemistry offers novel concepts in structural diversity and molecular recognition that can be used in drug design. Here, we consider DNA recognition by eta 6-arene Ru(II) anticancer complexes by an induced-fit mechanism. The stereochemistry of the dinuclear complex [((eta 6-biphenyl)RuCl(en))2-(CH2)6]2 + (3, en = ethylenediamine) was elucidated by studies of the half unit [(eta 6...

A novel data-driven soft sensor is designed for online product quality prediction and control performance modification in industrial units. A combined approach of time variable parameter (TVP) model, dynamic auto regressive exogenous variable (DARX) algorithm, nonlinear correlation analysis and criterion-based elimination method is introduced in this work. The soft sensor performance validation...

  Performance and capacity of sulfur recovery unit (SRU) are greatly affected by the H2S:CO2 ratio of the acid gas stream. The acid gases in Iran contain around 35 mol% H2S and 60 mol% CO2. This low concentration of H2S calls for more complex sulfur plant, larger equipments, and higher costs. Acid gas enrichment processes (AGE) is run to upgrade low quality acid gas collected from gas treating...

Three experiments were conducted to evaluate the feasibility of using a commercial slow-release urea product (SRU; Optigen®, Alltech Inc., Nicholasville, KY, USA) as partial replacement for vegetable protein sources in cattle diets. The first experiment was an vitro rumen fermentation that evaluated effect replacing soybean meal (SBM) nitrogen with from either SRU or free diets varying forage:c...

Zeolites are microporous materials with periodic framework structures. Efficient representation of crystal frameworks is important for the design and discovery new zeolites. We explore a graph-theoretic representation, namely Single Repeating Unit (SRU), which utilizes fewest tetrahedral atoms (T-nodes) their connectivity graph to describe zeolite framework. SRUs use topologically distinctive T...