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Тумановский, А. Г.; Кособокова, Э. М.

doi:10.1023/a:1014061504142

Cited by 1 publication

(3 citation statements)

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“…A change in the energy production of a CHP plant, associated with changed steam export ∆P el , can be expressed by Equation (17), where α represents the portion of electric energy consumed internally (driving CHP unit boiler fans, feedwater pumps etc.) due to steam export change:…”

Section: Combined Heat and Power Unit (Chp)mentioning

confidence: 99%

“…The approximation by linear dependence of steam turbine power production on mass flow of expanding steam [41][42][43][44] means that this marginal parameter is constant regardless of the turbine load. Parameter α in Equation (28) is 0.05; see Equation (17). The CHP unit's summer operational mode differs somewhat from that during the rest of the year.…”

Section: Chp Unitmentioning

confidence: 99%

“…Direct fuel consumption and associated emissions, which contribute a major part of the total energy consumption in a refinery, are attributed to process heaters and steam boilers [17,18]. Heavy fuel oils and refinery fuel gas represented the majority of fuels used in both cases [19,20].…”

Section: Introductionmentioning

confidence: 99%

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An Investigation of the Techno-Economic and Environmental Aspects of Process Heat Source Change in a Refinery

et al. 2019

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This study of process heat source change in industrial conditions has been developed to aid engineers and energy managers with working towards sustainable production. It allows for an objective assessment from energetic, environmental, and economic points of view, thereby filling the gap in the systematic approach to this problem. This novel site-wide approach substantially broadens the traditional approach, which is based mostly on “cheaper” and “cleaner” process heat sources’ application and only takes into account local changes, while neglecting the synergic effect on the whole facility’s operations. The mathematical model employed assesses the performance change of all the affected refinery parts. The four proposed aromatic splitting process layouts, serving as a case study, indicate feasible heat and condensate conservation possibilities. Although the estimated investment needed for the most viable layout is over €4.5 million, its implementation could generate benefits of €0.5–1.5 million/year, depending on the fuel and energy prices as well as on the carbon dioxide emissions cost. Its economics is most sensitive to the steam to refinery fuel gas cost ratio, as a 10% change alters the resulting benefit by more than €0.5 million. The pollutant emissions generated in the external power production process contribute significantly to the total emissions balance.

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Section: Combined Heat and Power Unit (Chp)mentioning

confidence: 99%