Optimal gas treatment and coal blending for reduced emissions in power plants: A case study in Northwest Spain

Guerras, Lidia S.; Martı́n, Mariano

doi:10.1016/j.energy.2018.12.089

Cited by 26 publications

(23 citation statements)

References 32 publications

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“…The methodology consists of two stages in order to synthesize a multiproduct refinery that is not restricted to bulk products but integrates them with the production of high added value products and energy towards the efficient production facility. It is an extension to multiproduct facilities of previous work on process synthesis (Guerras and Martín, 2019) Product identification: The identification of feasible products is a complex stage since typically 20-30 products are present in different amounts in the biomass. 1.-Product portfolio selection: It is by combining experimental work and literature review that the possible products from a particular raw material can be identified.…”

Section: Methodsmentioning

confidence: 99%

Methodology for the design of multiproduct facilities: Case of the olive tree

Guerras¹,

Taifouris²,

Serangupta³

et al. 2020

14th Mediterranean Congress of Chemical Engineering (MeCCE14) Abstracts Publication

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This work presents a systematic procedure for the synthesis of multiproduct processes based on biomass towards the production of a portfolio of products. It is a hybrid scheme that combines the use of metrics and superstructure optimization approach for the selection of products and processing stages towards making the most of the biomass including the foodenergy nexus. A case study of interest, the olive tree is used to present the results of the methodology since olive oil, antioxidants, energy and other by-products can be obtained from the leaves, the tree residues and the olives.

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Section: Methodsmentioning

confidence: 99%

Methodology for the design of multiproduct facilities: Case of the olive tree

Guerras¹,

Taifouris²,

Serangupta³

et al. 2020

14th Mediterranean Congress of Chemical Engineering (MeCCE14) Abstracts Publication

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“…The optimization of the gas treatment chain in oxy-combustion plants follows several steps as in a previous work. 19 First, the process flowsheet for the gas treatment is designed. This step consists of two stages.…”

Section: Process Designmentioning

confidence: 99%

“…19,21 Based on a previous work, the selective noncatalytic reduction is not considered although it is employed in some cases at the industrial scale. 19 In the last few years, several methods have been developed for the removal of SO 2 , HF, and HCl. They are classified into wet, dry, and semi-dry.…”

Section: Process Designmentioning

confidence: 99%

“…This performance can be represented by the temperature profile within the boiler is responsible for the flue gas composition. Noncatalyzed reduction was not selected in a previous work, 19 and therefore, only catalytic reduction is preselected to process the flue gas. Next, an electrostatic precipitator is used to remove particulates.…”

Section: Process Designmentioning

confidence: 99%

“…The aim is to purify the stream for recycle and/ or reuse of CO 2 . A hybrid approach is used 19 where a prescreening of the technologies is carried out in a first stage. Next, a superstructure of alternatives is formulated by developing surrogate models of all the technologies to select the most promising flue gas processing chain for oxycombustion facilities.…”

Section: Introductionmentioning

confidence: 99%

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Optimal Flue Gas Treatment for Oxy-Combustion-Based Pulverized Coal Power Plants

Guerras

Martı́n

2019

Ind. Eng. Chem. Res.

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Oxy-combustion is recognized as the cleanest technology which uses coal as an energy source. Flue gas clean-up is essential for sustainable operation. In this work, the optimal selection of the flue gas treatment technologies in oxy-combustion power plants is determined. A two-stage procedure combining heuristics and mathematical programming is used to evaluate the technologies involved including the boiler, denitrification, electrostatic precipitation, sulfur dioxide removal, and carbon capture. For plant operation, the coal feed has to be selected. An extended blending problem is solved to evaluate the coal type to be purchased based on its cost and composition. The optimal flue gas processing consists of electrostatic precipitation, followed by dry SO2 removal, and CO2 purification using zeolites. No specific denitrification method is required due to the low concentration levels of NO x generated in oxy-combustion. This flowsheet is used to select one among a mixture of three different types of coal: national, imported, and crude coal tar. However, no mixture is recommended as crude coal tar was the one selected. Even though the processing costs are higher, it is outweighed by the lower cost of the raw material.

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