Journal of the Fuel Society of Japan

[title in Japanese]

[in Japanese]

1972 Volume 51 Issue 4 Pages 195
Published: April 20, 1972
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.51.195

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Incineration Disposal of Rubber Wastes

Toyoichi Nakamoto

1972 Volume 51 Issue 4 Pages 196-203
Published: April 20, 1972
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.51.196

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With the remarkable expansion of rubber industry, disposal problem of waste matters becomes inevitably highlighted. Amomg rubber wastes there are rubber scraps come from through manufacturing processes in plants and wastes of finished products brought about wearing out rubber products by use.
Scrap tires among such wastes cause public discussion.
This treatise is mainly based on data researched and studied by countermeasure committees to wastes belonging to Japan Rubber Manufacturers' Association and Japan Automobile Tire Manufacturers' Association, and it mentions conditions to be possessed like types and constructions of incineration furnaces, disposal of waste gases, prevention of noises, etc. in case of incineration disposal of rubber scraps and scrap tires, and then it has comparatively investigated incineration costs based on equipments costs and running costs.
In addition this treatise shows that it is the most effective way of disposal at present for scrap tires to be used as fuel.

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Oxidative Degradation of Plastics

Etsuo Niki

1972 Volume 51 Issue 4 Pages 204-211
Published: April 20, 1972
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.51.204

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The oxidative degradation of plastics was reviewed from the fundamental standpoint. Various elementary reactions for the chain initiation, propagation and termination steps and their relative importances were discussed. The effects of several factors, such as crystallinity, tacticity, molecular weight and its distribution, polymer chain structure, film thickness, impurities and additives, on the oxidation of plastics were also discussed.

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Equipment for Waste Plastics Treatment by Kawasaki Dry Distillation Method

Mamoru Yamada

1972 Volume 51 Issue 4 Pages 212-221
Published: April 20, 1972
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.51.212

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As the demand for plastics products has grown, waste plastics from plastics manufacturers and urban homes have increased. Plastics are so durable that they cannot be decomposed by Nature's action alone.
Burning waste plastics produces soot, noxious gases and heavy metals, which raise secondary pollution problems.
A thermal decomposing method is proposed as a future method of treating waste plastics, but it is still in the developmental stage at various companies. The thermal decomposing method aims to turn the hydrocarbon of plastics into useful resources in one form or another.
Kawasaki Heavy Industries began researches on plastics treatment last spring, and has developed the dry distillation method which uses polyolefine resin, as solvent, in waste plastics containing polyvinylchloride.
This method is designed to recover such valuable byproducts as chloric acid and liquid fuels without raising any pollution problems. It it called the poly-bath dry disti-llation process.

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On the Incineration of Plastic Wastes by a Cotinuous-feed Incinerator with Pan-shaped Hearth and Scrapers and on the Treatment of Waste Gas and Liquid Discharged from the Incinerator Plant

Tsutomu Fukumoto

1972 Volume 51 Issue 4 Pages 222-232
Published: April 20, 1972
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.51.222

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Incineration of plastic wastes, smoke control and the treatment of waste gas and liquid discharged from the plastic waste incinerator plant are discussed and the experimental studies on the incineration of plastic wastes by a continuous-feed, 250kg/hr incinerator with pan-shaped hearth and scrapers and on the removal of HCl, SO₂, soot and heavy metals in the waste gas are reported.

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Plastics Wastes Incineration by Rotary Kiln

Wasaburo Sugishima

1972 Volume 51 Issue 4 Pages 233-241
Published: April 20, 1972
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.51.233

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Concerning the incineration of plastics wastes, fundamental studis are being carried out by several researches and various kinds of equipment have been developed so far. However, many problems still remain unsolved, taking only combustion phenomena, for example, problems as change of the state of material with temperature rise, unusual rist of gas temperature due to high heating value and emission of black smokes or injurious gases, which is the most characteristic phenomenon in plasticswastes incineration.
In order to solve these problems, the author made a trial use of rotary kiln in the first combustion chamber of plastics wastes incinerating system. In this system, thermal decomposition is induced by control of the atomospheric temperature and the feeding exaust gas flow in the first chamber and unburnt gas generated in this chamber is led to the next re-combustion chamber for perfect combustion. Then a pilot plant of this system having an incinerating capacity of 200 kg/hr was built and incineration test was carried out. It was confirmed that plastics wastes could be completely burnt without emitting black smokes by control the temperature in the kiln below firing point.

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[title in Japanese]

1972 Volume 51 Issue 4 Pages 248-252
Published: April 20, 1972
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.51.248

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