Waste Tire Pyrolysis Recycling with Steaming: Heat-Mass Balances &amp; Engineering Solutions for By-Products Quality

Kalitko, Uladzimir

doi:10.5772/31535

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…Waste tires pyrolysis is well known method for their thermal recycling by heating at near 500°C with purpose of liquid oil and carbon black by-production as near 50% and 35% yield correspondingly, including about 10% combustible off-gas residual after oil condensing and 5% wire steel cord in rest (all relatively to tire mass [5]. Results showed that: (1) the composition of the liquid hydrocarbon obtained is affected significantly by the air factor; (2) the higher operating temperature caused a higher yield of gasoline and diesel; (3) the yield of gasoline increased due to the catalyst zeolite added, and the yield of diesel increased due to the addition of the catalyst calcium carbonate; (4) the principal constituents of gasoline included dipentene and diprene [10].…”

Section: Literature Reviewmentioning

confidence: 99%

A Business Model for Producing Clean Energy in Developing Countries

Thanh

Dat

Chuong

et al. 2020

Wseas Transactions on Business and Economics

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Similar to other business projects, clean energy projects also has orientation for profit maximization in developing countries. Environmental problems caused by industrial wastes have been becoming serious issues in developing countries. Hence, recycling industrial wastes, in order to create more renewable and clean energy, has been recognized as one of ways to reduce adverse impact of global warming and negative effect of greenhouse gases. According to statistics, Viet Nam discharges about 400,000 tons of waste tires annually and this number in the US is estimated about 4,200,000 tons per year (source: vnu.edu.vn). This creates many environmental issues. Hence, this paper aims to propose a business model to solve problems mentioned below in the paper. Building a tire shredding plant in California, USA (for example) to cut the whole tires into small shredded tires then export to developing countries like Vietnam is one method to convert wastes into clean energy and protecting our environment. This is one main objective of this research paper. Another purpose of this study is to find out a financial model to evaluate socio-economic values of renewable energy projects that help to protect our environment, as well as a modern viewpoint of not including or adding (+) new debt issuances to increase net cash flow when estimating FCFE cash flow. Using pyrolysis technology to crack carbon linkage into smaller linkages, and then convert waste tires into renewable energy (FO-R oil, carbon black and steel). This is an application of chemical engineering. Through the economic and technical analysis of this model, we can see the practical benefits of the energy project in terms of economic efficiency, profitability, which bring surplus value for investors, effective solutions for customers and a quality energy product for the society. And it also suggest the relevant government of developing countries to consider proper policies to encourage environment protection and businesses in the field of converting industrial wastes such as tires into clean energy.

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Section: Literature Reviewmentioning

confidence: 99%

A Business Model for Producing Clean Energy in Developing Countries

Thanh

Dat

Chuong

et al. 2020

Wseas Transactions on Business and Economics

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Modeling of destruction processes during recycling of rubber-technical waste using the technology of multi-contour circulation pyrolysis

Ryzhkov

Kryva

2017

EEJET

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Сформована математична модель процесу термічної утилізації гумо-технічних відходів за технологією багатоконтурного циркуляційного піролізу, яка включає повний механізм деструк-ції та кінетику паралельно-послідовних реак-цій піролізу. Запропонована модель дозволяє роз-рахувати концентрації отриманих продуктів деструкції, а відтак дає можливість наближе-но визначити склад цільових кінцевих продуктів. Застосування даної моделі необхідне при опти-мізації температурних режимів устаткування Article [3] introduced a method for the production of pylolysis oil from used automobile tires, based on the effect of microwave oven. The properties of the resulting alternative fuel, which is suitable for the diesel engine, were explored. Results of the study showed that heat-generating capacity of the resulting liquid fuel is 40.4 MJ/kg. The paper does not provide other characteristics compared to traditional diesel fuel, which does not allow us to talk about the high potential of fuel replacement.In the study [4], a new approach to a heating system with the use of liquid products of pyrolysis of waste tires was presented. Fuel properties of pyrolysis liquids, such as density, viscosity, the content of carbon and hydrogen, are almost comparable with commercial automobile diesel fuels. The problem is the high sulfur content and the lower flash point.Authors [5] considered pyrolysis of worn tires with an immobile layer in the reactor with vacuum and with the use of catalytic additives, such as Na 2 CO 3 , NaOH. As a result of the performed studies, they draw a conclusion on the feasibility of using NaOH as it is possible to achieve a decrease in the temperature of the process without changing the output of the liquid fraction (pyrolysis oil). The use of Na 2 CO 3 did not essentially change the course of the reaction. It was proved that vacuum pyrolysis has advantages over atmospheric pyrolysis.Scientists in paper [6] examined properties of the liquid fraction, obtained as a result of pyrolysis of worn tires, compared with diesel fuel. As a result, they made conclusions about the possibility of subsequent use of pyrolysis oil because its properties are similar to those of diesel fuel and are able to replace it in a small engine. Certain mixtures were taken for examination, and it was defined in conclusion that the mixture DTPO 25 demonstrated better results than DTPO 50 and DTRO 75.Article [7] proposed a number of engineering solutions to intensify the process of pyrolysis of shredded tires by the technology EnresTec Inc. (Taiwan). A special feature of this method of recycling is the postcombustion of tailgas with vapor wastes. Paper [8] shows the heat and mass exchange balances and calculations for enhancing energy efficiency and economic component. Calculation-analytical substantiations are undoubtedly an important contribution into the study of thermal processes of recycling worn tires. However, the main results of these studies are determining the quantitative characteristics of finished products. The composition and quality o...

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Waste Tire Pyrolysis Recycling with Steaming: Heat-Mass Balances & Engineering Solutions for By-Products Quality

Cited by 2 publications

References 18 publications

A Business Model for Producing Clean Energy in Developing Countries

A Business Model for Producing Clean Energy in Developing Countries

Modeling of destruction processes during recycling of rubber-technical waste using the technology of multi-contour circulation pyrolysis

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