scholarly journals Analyses for Synthesis Gas from Municipal Solid Waste Gasification under Medium Temperatures

Processes ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 84 ◽  
Author(s):  
Qinyang Gu ◽  
Wei Wu ◽  
Baosheng Jin ◽  
Zheng Zhou
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Oxygen Content ◽  
Tubular Reactor ◽  
Oxidation Reactions ◽  
Medium Temperature ◽  
Combustible Gas ◽  
Lower Heating Value ◽  
Waste Gasification ◽  
Increasing Temperature

Municipal solid waste (MSW) gasification could be a novel method that shows the various advantages over traditional MSW treatments in China. Other research concluded that MSW gasification was operating by the assistant heat, and the gasification may occur under medium temperature. So, this study is aimed to investigate MSW gasification and pyrolysis behavior and analyze the syngas evolution and reaction mechanism. The MSW samples were collected in daily life and the experiments were carried out in a fixed tubular reactor below 650 °C. The effects of medium temperature and oxygen content on syngas quality were elucidated in depth. The results have shown that temperature can promote the syngas quality in the range of 550–650 °C, because the increasing temperature strengthens the reaction rate. The oxygen content should be controlled in a certain range, or oxidation reactions will be more prominent during gasification. The optimal gasification condition in this study was obtained at 650 °C and an oxygen concentration of 1.25%, the combustible gas yield and the lower heating value (LHV) of syngas of this condition were 0.296 L/g and 10.98 kJ/L, respectively. This study provides insights for MSW gasification under medium temperature, and a practical gasification system can be designed under a certain condition.

scholarly journals Investigation of Process Parameters Influence on Municipal Solid Waste Gasification with CO2 Capture via Process Simulation Approach

2020 ◽  
Vol 10 (1) ◽  
pp. 1-10
Author(s):  
Fadilla Noor Rahma ◽  
Cholila Tamzysi ◽  
Arif Hidayat ◽  
Muflih Arisa Adnan
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Process Parameters ◽  
Co2 Capture ◽  
Equivalence Ratio ◽  
H2 Production ◽  
Heating Value ◽  
Lower Heating Value ◽  
Waste Gasification ◽  
Process Simulator

Integration of gasification with CO2 capture using CaO sorbent is proposed as an alternative treatment to convert municipal solid waste (MSW) into energy. Aspen Plus process simulator was employed to study the process. Two models were built to represent the non-sorbent and the sorbent-enabled MSW gasification. The model validation against available experimental data shows high accuracy of the simulation result. The effect of CO2 capture using CaO sorbent on the syngas composition and lower heating value (LHV) was observed by comparing the two models, and sensitivity analysis was performed on both models. Several process parameters affecting the syngas composition and LHV were investigated, including CaO/MSW ratio, temperature, equivalence ratio, and steam/MSW ratio. The addition of CaO sorbent for CO2 capture was found to successfully reduce the CO2 content in the syngas, increase the H2 composition, and improve the syngas LHV at the temperature below 750 oC. The maximum H2 composition of 56.67% was obtained from the sorbent-enabled gasification. It was found that increasing equivalence ratio leads to a higher H2 concentration and syngas LHV. Raising steam/MSW ratio also increases the H2 production, but also reduces the LHV of the syngas. Observation of the temperature effect found the highest H2 production at 650 oC for both non-sorbent and sorbent-enabled gasification. 

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

Combustible gas production during catalytic pyrolysis of municipal solid waste

2017 ◽  
Vol 39 (3) ◽  
pp. 277-283 ◽  
Author(s):  
Di Yang ◽  
Qiang Xie ◽  
Xinqian Shu ◽  
Yiman Jia ◽  
Jinwei Jia ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Catalytic Pyrolysis ◽  
Gas Production ◽  
Combustible Gas

Autothermal biodrying of municipal solid waste with high moisture content

2010 ◽  
Vol 64 (2) ◽  
Author(s):  
Agnieszka Zawadzka ◽  
Liliana Krzystek ◽  
Stanisław Ledakowicz
Keyword(s):  
Moisture Content ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Energy Content ◽  
Plastic Material ◽  
Initial Moisture Content ◽  
Tubular Reactor ◽  
Calorific Value ◽  
High Energy ◽  
Total Capacity

AbstractTo carry out autothermal drying processes during the composting of biomass, a horizontal tubular reactor was designed and tested. A biodrying tunnel of the total capacity of 240 dm3 was made of plastic material and insulated with polyurethane foam to prevent heat losses. Municipal solid waste and structural plant material were used as the input substrate. As a result of autothermal drying processes, moisture content decreased by 50 % of the initial moisture content of organic waste of about 800 g kg−1. In the tested cycles, high temperatures of biodried waste mass were achieved (54–56°C). An appropriate quantity of air was supplied to maintain a satisfactory level of temperature and moisture removal in the biodried mass and high energy content in the final product. The heat of combustion of dried waste and its calorific value were determined in a calorimeter. Examinations of pyrolysis and gasification of dried waste confirmed their usefulness as biofuel of satisfactory energy content.

Three municipal solid waste gasification technologies analysis for electrical energy generation in Brazil

2019 ◽  
Vol 37 (6) ◽  
pp. 631-642 ◽  
Author(s):  
Ana Carolina Medina Jimenez ◽  
Reynaldo Palacios- Bereche ◽  
Silvia Nebra
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Electricity Generation ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Electrical Energy ◽  
Internal Combustion ◽  
Electricity Production ◽  
Per Capita ◽  
Waste Gasification

In Brazil, in 2016, 196,050 tonnes day-1 of municipal solid waste (MSW) were collected, which means a waste generation of 1.035 kg per capita per day. Only 59.1% of the waste has adequate destination in sanitary landfills, whereas the remaining 40.9% has inadequate destination in controlled landfills and open dumps (ABRELPE, 2018). Among all the states in the country, the State of São Paulo has the biggest per capita generation: 2.290 kg. Today, the only waste destination practiced in the country is deposition in landfills, but other possibilities can be considered. Among thermal treatment routes, the gasification of MSW is an interesting alternative to be studied, because of its versatility and relatively low emissions. The aim of this work is to evaluate the potential of electricity generation through MSW gasification in Santo André city, Brazil, comparing three waste gasification technologies: TPS Termiska Processer AB, Carbogas and Energos. These alternatives have operated commercially for a few years, and data are available. Specific characteristics of each technology were taken into account, such as the reactor type and fuel properties. For the electricity production scheme, two energy conversion systems were assumed: an internal combustion engine and a steam power cycle. From the process parameters adopted, the results showed that Carbogas technology, coupled to internal combustion engines, presents the highest efficiency of electricity generation (30%) and also the lowest cost of electrical energy produced (US$65.22 MWh-1) when Santo André’s gate fee is applied.

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