scholarly journals Chemical Carbon and Hydrogen Recycle through Waste Gasification: The Methanol Route

2021 ◽  
Author(s):  
Alessia Borgogna ◽  
Gaetano Iaquaniello ◽  
Annarita Salladini ◽  
Emanuela Agostini ◽  
Mirko Boccacci
Keyword(s):  
Renewable Energy ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Economic Benefits ◽  
Chemical Technology ◽  
Production Waste ◽  
Methanol Production ◽  
The Core ◽  
Gasification Process ◽  
Waste Gasification

A large amount of valuable Carbon and Hydrogen is lost in the disposal of the non-recyclable fraction of Municipal Solid Waste (MSW) – particularly unsorted waste fraction and plastics residue from mechanical recycle process. The waste-to-chemical technology allows to exploit the components entrapped in the non-recyclable waste by converting it into new chemicals. The core of waste-to-chemical technology is the gasification process, which is designed to convert waste into a valuable syngas to be used as example for methanol production. Waste to methanol schemes allow to achieve significant environmental and economic benefits, which can be further intensified within the scenario of increasing share of renewable energy.

scholarly journals Solid Waste Gasification: Comparison of Single- and Multi-Staged Reactors

2021 ◽  
Author(s):  
Xianhui Zhao ◽  
Kai Li ◽  
Meghan E. Lamm ◽  
Serdar Celik ◽  
Lin Wei ◽  
...  
Keyword(s):  
Climate Change ◽  
Renewable Energy ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Plastic Waste ◽  
Feed Composition ◽  
Advantages And Disadvantages ◽  
Applied Technology ◽  
Waste Gasification

Interest in converting waste into renewable energy has increased recently due to concerns about sustainability and climate change. This solid waste is mainly derived from municipal solid waste (MSW), biomass residue, plastic waste, and their mixtures. Gasification is one commonly applied technology that can convert solid waste into usable gases, including H2, CO, CH4, and CO2. Single- and multi-staged reactors have been utilized for solid waste gasification. Comparison in reactor dimensions, operating factors (e.g., gasification agent, temperature, and feed composition), performance (e.g., syngas yield and selectivity), advantages, and disadvantages are discussed and summarized. Additionally, discussion will include economic and advanced catalysts which have been developed for use in solid waste gasification. The multi-staged reactor can not only be applied for gasification, but also for pyrolysis and torrefaction.

scholarly journals Modelling of syngas production from municipal solid waste (MSW) for methanol synthesis

2017 ◽  
Vol 10 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Patrik Šuhaj ◽  
Jakub Husár ◽  
Juma Haydary
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Process Design ◽  
Electricity Generation ◽  
Liquid Fuel ◽  
Process Optimisation ◽  
Methanol Production ◽  
Syngas Production ◽  
Gasification Process ◽  
Refuse Derived Fuel

AbstractApproximately 1 300 Gt of municipal solid waste (MSW) are produced worldwide every year. Most of it is disposed of in landfills, which is very hazardous for the environment. Up to 10 % of produced MSW are incinerated. However, incineration is not very effective and requires specific conditions for preventing emissions. Gasification and pyrolysis are more effective processes which can be used not only for heat and electricity generation but also for fuel and valuable chemicals production. MSW can be transformed into refuse-derived fuel (RDF) which has higher heat of combustion. Synthesis gas produced by RDF gasification can be utilised in methanol production. Methanol is a very lucrative chemical which can be used as renewable liquid fuel or as a reagent in organic syntheses. Gasifier design and process optimisation can be done using a reliable mathematical model. A good model can significantly decrease the number of experiments necessary for the gasification process design. In this work, equilibrium model for RDF gasification was designed in Aspen Plus environment and the flow of oxygen and steam as gasification agents were optimised to achieve the highest theoretical methanol yield. Impact of the recycle of unreacted steam and produced tar on the methanol yield was evaluated. The highest theoretical methanol yield (0.629 kgMEOH/kgRDF) was achieved when the steam and tar recycle were switched on, the ratio between oxygen and RDF feed was 0.423 kg/kg and that between the steam and RDF feed was 0.606 kg/kg. In this case, fresh steam represented only 12 % of the total steam fed to the reactor, the rest consisted of recycled steam. Optimal gasifier temperature was 900 °C.

Modelling of municipal solid waste gasification using an optimised ensemble soft computing model

Fuel ◽  
2021 ◽  
Vol 289 ◽  
pp. 119903
Author(s):  
Navid Kardani ◽  
Annan Zhou ◽  
Majidreza Nazem ◽  
Xiaoshan Lin
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Soft Computing ◽  
Computing Model ◽  
Waste Gasification

Recapture of Energy and Metals From MSW and ASR

2009 ◽  
Author(s):  
Michael Jaap ◽  
Daniel J. Shapiro
Keyword(s):  
Renewable Energy ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Fossil Fuels ◽  
Energy Technology ◽  
Equivalent Source ◽  
Shredder Residue ◽  
Unique Position ◽  
Research Corporation ◽  
Scrap Recycling

CarbonTech, LLC is the business vehicle to commercialize the licensed CATO Research Corporation process (US Patent No. 7,425,315) to generate an energy rich source of carbon from wastes such as municipal solid waste (MSW) and automobile shredder residue (ASR). With a focus on renewable energy technology, CarbonTech is in a unique position to reduce waste to landfills by 90%, generate a coal equivalent source of sustainable fuel to help reduce our dependence on fossil fuels, and recover metals for scrap recycling purposes.

Comparative environmental assessment of alternative waste management strategies in developing regions: A case study in Kazakhstan

2018 ◽  
Vol 36 (8) ◽  
pp. 689-697 ◽  
Author(s):  
I Noya ◽  
V Inglezakis ◽  
S González-García ◽  
E Katsou ◽  
G Feijoo ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Environmental Benefits ◽  
Capital City ◽  
Base Case ◽  
Municipal Solid Waste Management ◽  
Management Scenarios ◽  
Management Schemes

The management of municipal solid waste in the Republic of Kazakhstan is still in its infancy. This situation poses a potential threat to the environment and public health and, therefore, it is necessary to introduce improved management schemes in the country. In this study, the life cycle assessment methodology was followed to evaluate the potential environmental benefits of implementing alternative management schemes based on low-waste generation and renewable energy production. The current situation of the capital city Astana was considered as the base case. Environmental results showed that air emissions in terms of landfill gases are the major contributor to climate change impacts, while landfill disposal of the non-recovered fraction of recyclable materials was responsible for the highest impacts in the other categories (especially land use). However, the reuse of recycled materials largely offsets the related environmental burdens, along with energy generation. In comparative terms, it was demonstrated that the proposed waste management scenarios are more environmentally friendly than current practices (S0), mainly owing to the credits associated with the valorisation of renewable energy (S2) and recovered materials (S3). Consequently, the evaluation showed that greater efforts should be made to exploit the energy potential of organic fraction, together with higher recycling rates, to move towards lower environmental impacts associated with municipal solid waste management.

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