Coprocessing waste rubber tire material and coal

Orr, E.C.; Burghard, John A.; Tuntawiroon, W.; Anderson, Larry B.; Eyring, Edward M.

doi:10.1016/0378-3820(96)01015-6

Cited by 23 publications

(22 citation statements)

References 10 publications

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“…Analyzing different rubber compounds, several authors report different results of proximate and elemental analysis, as shown in Table 1 (Lee et al, 1995;Zhang et al, 2008;Chang, 1996;González et al, 2001;Williams and Richard, 1995;Orr et al, 1996;Cunliffe and Williams, 1998;Lanoir et al, 1998) and Table 2 ( Rodríguez et al, 2001;Zhang et al, 2008;Isabel de Marco Rodriguez et al, 2001;Chang, 1996;González et al, 2001;Laresgoiti et al, 2004;Cunliffe and Williams, 1998;Arion et al, 2001;Williams and Richard, 1995;Orr et al, 1996;Lanoir et al, 1998) respectively. For obtaining the average content of elements in tires, each part of tire must be analyzed.…”

Section: Waste Tire Gasificationmentioning

confidence: 99%

Technical assessment of discarded tires gasification as alternative technology for electricity generation

2017

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Concern about contamination associated with the disposal of tires has led to the search for technologies to reuse discarded tires, which include the use of Tire Derived Fuel (TDF) as fuel in advanced thermal-conversion processes, this allows the energy use of these wastes at affordable costs and reduces the environmental impact on scrap tires disposal. A theoretical assessment of the technical viability of TDF gasification for electric and thermal power generation, from the producer gas combustion in an internal combustion engine and in a gas turbine, was performed. The combustion of producer gas derived from the gasification of TDF in an internal combustion engine driving a generator (ICE-G) appears as the more efficient route for electricity generation when compared with the efficiency obtained with the use of gas turbine (GT-G). A higher global efficiency, considering the electric and thermal generation efficiency can be expected with the use of TDF producer gas in GT-G, where is expected an overall efficiency of 77.49%. The assessment shows that is possible produces up to 7.67MJ and 10.62MJ of electric and thermal energy per kilogram of TDF gasified using an ICE-G and up to 6.06MJ and 13.03MJ of electric and thermal energy respectively per kilogram of gasified TDF using a GT-G.

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Section: Waste Tire Gasificationmentioning

confidence: 99%

Technical assessment of discarded tires gasification as alternative technology for electricity generation

2017

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“…Brown coal is characterised by high concentration of chemical bonds containing oxygen. A synergic effect of waste rubber tyres and coal was observed at the temperature of 430 °C without or with molybdenum catalysts and greater total conversion to liquids was yielded [8]. Two-stage pyrolysis of 75 wt.% coal and 15 wt.% rubber led to the production of gas with high amount of hydrogen and carbon monoxide and to solid phase consisting mainly of carbon [9].…”

Section: Introductionmentioning

confidence: 99%

Study of Pyrolysisis of Polymers and Coal and Co-Pyrolysis of Their Blends, Kinetics of the Process

Mikulová¹,

Večeř²,

Frantík³

2012

TransVSBms

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Amount of polymer waste increase every year and for this reason upgrading of this waste is a necessity. Nowadays waste disposal and incineration of polymers waste are the most frequently used methods which (i) did not allowed chemical and energy utilization and (ii) are not environmentally friendly. Pyrolysis and co-pyrolysis provide an attractive way to dispose of and convert polymer waste and coal into higher value fuel and the specific benefits of this method potentially include many environmental friendly advantages. Pyrolysis and co-pyrolysis has been studied using termogravimetry apparatus NETZCH TG-DTA STA 409 EP. The pyrolysis of all polymers except for scrap tyres was a one-step process and temperature range was narrower than for coal pyrolysis. The overlapping temperature range for pyrolysis of polymers and coal was 200-600°C. The synergic effect and kinetics of co-pyrolysis of polymers and coal has been studied in the given temperature range. The addition of polymers to coal led to (i) the enhancement of weight loss of brown coal, (ii) the shift of temperature of the max pyrolysis speed and (iii) the slight influence of E A of coal pyrolysis. AbstraktMnožství odpadních polymerů každoročně stoupá a jejich recyklace je velmi důležitá. V dnešní době je největší část těchto odpadů ukládána na skládky nebo spalována. Tyto dvě metody však nejsou příliš vhodné (nedochází k chemickému ani energetickému využití materiálu) a nejsou ani šetrné k životnímu prostředí. Pyrolýza a ko-pyrolýza jsou vhodné recyklační metody umožňující přeměnu odpadních polymerů a uhlí na paliva s vyšším energetickým obsahem a jsou šetrné k životnímu prostředí. Pyrolýza a ko-pyrolýza vybraných polymerních materiálů s hnědým uhlím byla studována pomocí dynamické termogravimetrie na přístroji LECO TG-DTA STA 409 EP firmy NETZCH. Pyrolýza polymerů, kromě odpadních pneumatik, probíhala v jednom stupni a v užším teplotním intervalu než pyrolýza uhlí. Teplotní interval, kdy docházelo k pyrolýze polymeru i uhlí byl 200-600°C. V tomto teplotním intervalu byla rovněž studována kinetika ko-pyrolýzy a synergický efekt studovaných polymerů a hnědého uhlí. Nejvyšší pozitivní synergický efekt vedoucí ke zvýšení hmotnostního úbytku hnědého uhlí a rychlejší pyrolýzy při nižších teplotách měl ze studovaných polymerů polypropylen.

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“…The main interest in this field nowadays is to describe the mechanism by which this synergism takes place. The catalytic effect of carbon black or inorganic solids in rubber on coal cracking was supposed to be responsible for the synergy, , although there is not an agreement about their specific role. , On the other hand, it was proposed that components of tire liquids with a partially hydrogenated polyaromatic structure could act as effective hydrogen donors. , Its effectiveness was related to their ability to quench free radicals produced in the thermal decomposition of coal, forming hydroderivatives which transfer hydrogen to coal from the gas phase. , Any role that tire rubber could have in liquefaction environments would be of great interest. The years 1970−1985 gave birth to “new” processes to obtain liquid fuels from coal, such as a solvent-refining process, catalytic direct hydrogenation, donor solvent liquefaction, and catalytic two-stage hydrogenation…”

Section: Introductlonmentioning

confidence: 99%

Evaluation of Synergy in Tire Rubber−Coal Coprocessing

Mastral

Mayoral

Murillo

et al. 1998

Ind. Eng. Chem. Res.

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The tire rubber−coal synergy is evaluated through the different roles that rubber can have in coprocessing systems. For that, two different experimental designs were used: a swept fixed-bed reactor and tubing bomb minireactors. In this way, coal was coprocessed with rubber liquids from rubber pyrolysis and rubber hydrogenation, in a hydrogen atmosphere at 400 °C. Coal was mixed as well with rubber in different proportions and hydrogenated at 375, 400, and 425 °C, and oils obtained were characterized by thin-layer chromatography to obtain hydrocarbon type composition. Rubber behavior was compared to each of the main components of tires, and all the results indicated that the slight synergy found can be due to the small free radicals from vulcanized rubber decomposition, which are able to stabilize coal radicals to light products.

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Coprocessing waste rubber tire material and coal

Cited by 23 publications

References 10 publications

Technical assessment of discarded tires gasification as alternative technology for electricity generation

Technical assessment of discarded tires gasification as alternative technology for electricity generation

Study of Pyrolysisis of Polymers and Coal and Co-Pyrolysis of Their Blends, Kinetics of the Process

Evaluation of Synergy in Tire Rubber−Coal Coprocessing

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