Techno-economic assessment of turning gasification-based waste char into energy: A case study in South-Tyrol

Piazzi, Stefano; Zhang, Xiaolei; Patuzzi, Francesco; Baratieri, Marco

doi:10.1016/j.wasman.2020.02.038

Cited by 18 publications

(8 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, a payback analysis has been done by solving the following equation, where A are the savings minus the operation and maintenance costs, P is the present worth capital costs, and IR is the interest rate. The variable n represents the number of years to return the investment in comparison with the reference case [67].…”

Section: Techno-economic Assessment With Net Present Value Calculationmentioning

confidence: 99%

Evaluation of biomass-based production of below zero emission reducing gas for the iron and steel industry

Hammerschmid

Müller

Fuchs

et al. 2020

Biomass Conv. Bioref.

View full text Add to dashboard Cite

The present paper focuses on the production of a below zero emission reducing gas for use in raw iron production. The biomass-based concept of sorption-enhanced reforming combined with oxyfuel combustion constitutes an additional opportunity for selective separation of CO2. First experimental results from the test plant at TU Wien (100 kW) have been implemented. Based on these results, it could be demonstrated that the biomass-based product gas fulfills all requirements for the use in direct reduction plants and a concept for the commercial-scale use was developed. Additionally, the profitability of the below zero emission reducing gas concept within a techno-economic assessment is investigated. The results of the techno-economic assessment show that the production of biomass-based reducing gas can compete with the conventional natural gas route, if the required oxygen is delivered by an existing air separation unit and the utilization of the separated CO2 is possible. The production costs of the biomass-based reducing gas are in the range of natural gas-based reducing gas and twice as high as the production of fossil coke in a coke oven plant. The CO2 footprint of a direct reduction plant fed with biomass-based reducing gas is more than 80% lower compared with the conventional blast furnace route and could be even more if carbon capture and utilization is applied. Therefore, the biomass-based production of reducing gas could definitely make a reasonable contribution to a reduction of fossil CO2 emissions within the iron and steel sector in Austria.

show abstract

Section: Techno-economic Assessment With Net Present Value Calculationmentioning

confidence: 99%

Evaluation of biomass-based production of below zero emission reducing gas for the iron and steel industry

Hammerschmid

Müller

Fuchs

et al. 2020

Biomass Conv. Bioref.

View full text Add to dashboard Cite

show abstract

“…The solid by-product, char, has long been considered a waste without any further value. To this day, Italian plant owners dispose of it at a cost; in South Tyrol, the 46 operative gasifiers produce about 1300 Mg per year of char, and plant owners must pay a total of 200,000 € for its disposal [48]. On the one hand, gasification char is similar to pyrolysis biochar: they are rich in carbon and porous.…”

Section: On the Use Of Subproducts In A Circular Economy Viewmentioning

confidence: 99%

“…The most interesting applications are arguably those within the gasification process itself, as they eliminate costs for transport of the char and for the purchase of specific materials. Recently, many researchers devoted their efforts to this topic: Ravenni et al [52], Buentello-Montoya et al [53] and Cordioli et al [54] proved that char is suitable for reforming and cracking the gasification tar; Marchelli et al [43] and Benedetti et al [55] showed that it is able to adsorb H 2 S and CO 2 ; Hernández et al [56] and Piazzi et al [48] assessed the benefits of recirculating it to the gasifier or burning it in a separate unit, respectively.…”

Section: On the Use Of Subproducts In A Circular Economy Viewmentioning

confidence: 99%

Current Status of Energy Production from Solid Biomass in North-West Italy

2020

View full text Add to dashboard Cite

Data on the thermochemical plants fed by solid biomass in the north-west area of Italy (Liguria, Lombardy, Piedmont and Aosta Valley) have been organised, analysed and discussed. Moreover, the biomass availability and potential has been evaluated. A total of 28,167 plants have been categorised according to their typology and output: thermo-electric power plants for electricity production, thermal plants for heat production, cogeneration plants for combined heat and electricity production and district heating installations for local heating purposes. In general, separate observations for the different provinces may be drawn. Liguria stands out as the most evident case of under-exploited biomass potential, followed by Aosta Valley, which, however, is rich in hydroelectricity. Lombardy and Piedmont are more virtuous and have several plants in their territory. The construction of new plants and the upgrade of existing ones may bring noteworthy benefits, as well as the use of added value sub-products to foster circular economy approaches.

show abstract

“…Also, the application of biochar along with other secondary carbon biocarriers, i.e., biomass residues, torrefied biomass, etc., in metallurgical activities, has been reviewed by Kieush et al, (2022) [6] focusing on torrefied biomass. Torrefaction or mild pyrolysis refers to the thermal treatment of biomass under an inert atmosphere process at lower temperatures (200-300 • C) than the conventional form of pyrolysis (350-1100 • C) that enhances biomass characteristics without changing the high molecular content and preserving a higher yield of solid material usable as a carbon substitute [7]. Biochar, as a result of pyrolysis or gasification at 350-110 • C, is a byproduct of processes aimed mainly at energy production and the residual char is therefore regarded as a byproduct or waste material [8].…”

Section: Introductionmentioning

confidence: 99%

“…In the DRI/EAF route, it is feasible to utilize biocoke as a carbon source up to 100% of the time, even while adding a significant quantity of torrefied biomass (up to 50%) into the coal blend. [7]. In the EAF process, carbon, in the form of coke or anthracite, can be used for charge, injection, or as a recarburizer [9].…”

mentioning

confidence: 99%

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Al Hosni,

Domini,

Vahidzadeh

et al. 2024

Energies

View full text Add to dashboard Cite

The metallurgical sector is one of the most emission- and energy-intensive industries. The possibility of using fossil carbon substitutes has been investigated to reduce the environmental impact of the steelmaking sector. Among others, biochar emerged as a promising fossil coal/coke substitute. We conducted a literature review on biochar use in the metallurgical sector and its potential environmental benefits. The possibility for biochar as a coal/coke substitute is influenced by the source of biochar production and the process within which it can be used. In general, it has been observed that substitution of biochar ranging from a minimum of 5% to a maximum of 50% (mostly around 20–25%) is possible without affecting, or in some cases improving, the process, in coke making, iron sintering, blast furnaces and electric furnaces application. In some studies, the potential CO2 reduction due to biochar use was estimated, ranging from 5% to about 50%. Despite there still being an area of further investigation, biochar appeared as a promising resource with a variety of uses in the metallurgical sector, contributing to the lowering of the environmental impact of the sector.

show abstract

Techno-economic assessment of turning gasification-based waste char into energy: A case study in South-Tyrol

Cited by 18 publications

References 34 publications

Evaluation of biomass-based production of below zero emission reducing gas for the iron and steel industry

Evaluation of biomass-based production of below zero emission reducing gas for the iron and steel industry

Current Status of Energy Production from Solid Biomass in North-West Italy

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Contact Info

Product

Resources

About