Traditional optimization of production system and utility system is carried out separately which cannot ensure that the entire refinery system is optimized globally. In this paper, a novel integrated approach is proposed to optimize process production planning and utility system operation simultaneously. A refinery-wide mixed integer nonlinear programming model is proposed and the traditional m...

background and objective: prevention of accidents—a crucial requirement in oil industries—involves hazard recognition, risk assessment, and corrective actions. the purpose of this study was to compare the etba and hazop techniques for risk assessment in a gasoline refinery unit. methods: in this case study, data were collected using process flow diagram, walking–talking through method, piping a...

Unpublished AIChE shall not be responsible for statements or opinions contained in papers or printed in its publications ABSTRACT The refinery business involves tasks spanning across several departments and using large amounts of data. These processes include crude procurement, logistics scheduling, storage (tank) scheduling and crude scheduling. Integrated decisions based on the entire supply ...

The effects of the energy crisis and rising demand have sparked development to improve efficiency in using fuel oil. According Indonesia's oil resources, increasing refinery capacity building mini refineries is essential secure local production. It more effective cost-effective construct a small with configuration starting flash unit or pre-fractionator, an atmospheric distillation unit, vacuum...

Hulett Refinery had been experiencing problems with higher than normal ash gains since the 1987/88 season. Investigations into the composition .ofthe as~ sho,,:ed the major cause of the ash gam to be an mcr~~se in calcium. It ~as proposed that the calcium was solubl1~sed by reaction WIth lactic acid to form calcium lactate WhICh was not removed during carbonatation. This proposal was later.c~)O...

The article shows examples of the use Aspen Hysys software for optimization AVT-3 and AT-2 crude oil distillation units at Atyrau Oil Refinery. was implemented Refinery first time.Calculations were carried out to optimize refinery with construction a model in Hysys. As result calculations, possibility improving efficiency individual parts revealed, pilot runs on confirm. During run unit, restri...

Workplace air samples analyzed for benzene at four US refineries from 1976 to 2007 were pooled into a single dataset to characterize similarities and differences between job titles, tasks and refineries, and to provide a robust dataset for exposure reconstruction. Approximately 12,000 non-task (>180 min) personal samples associated with 50 job titles and 4000 task (<180 min) samples characteriz...

To evaluate the hypothesis of increased kidney cancer risk after exposure to hydrocarbons, especially those present in gasoline, we conducted a case-control study in a cohort of approximately 100,000 male refinery workers from five petroleum companies. A review of 18,323 death certificates identified 102 kidney cancer cases, to each of whom four controls were matched by refinery location and de...