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Start Over Subject plastics

2. Co-coking of stamped charges with the waste organic admixtures

Creator:
Pavel Straka
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, koks, plasty, kaučuk, coke, plastics, rubber, co-coking, charge, 7, and 551
Language:
English
Description:
By use of plastic or rubber admixtures in the stamped charges, it is possible to affect the properties of tar, in contrast to the calorific value of resulting coking gas; further, it was found that the reactivity- and strength parameters of the obtained blast-furnace coke are good or acceptable. Unused plastics or rubber can economize on part of the coal used in a stamped charge. Additions of both light and heavy plastics can be used up to 5 % of a charge weight; in the case of rubber it is not advisable to exceed 2 wt.-% in a charge. In contradiction to the other methods, which process the unused plastics of up to a content of 1 % in a charge, it is possible, in the case of used stamping method, to process even 2 % or more., Pavel Straka., and Obsahuje bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Copyrolysis of coal / waste polymers mixturest

Creator:
Kříž, Vlastimil and Brožová, Zuzana
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, uhlí, bavlna, pneumatiky, plasty, coal, cotton, tires, plastics, co-pyrolysis, wastes, 7, and 551
Language:
English
Description:
Mixtures of coal/waste tires, coal/waste plastics and coal/waste cotton were pyrolyzed in the laboratory pyrolytical unit built in IRSM AS CR Prague. Non-caking hard coal (mine Lazy) and its mixtures with some organic wastes were pyrolyzed in a quartz reactor inserted in a vertical tube furnace. The main product yields (coke, tar, gas and reaction water) documented exhibit entirely different influence of added waste. Results demonstrated that co-pyrolysis is meaning full in case of waste tiers and plastics. However, in case of co-processing with waste cotton (natural textile), the results are not promising., Vlastimil Kříž and Zuzana Brožová., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. Samouspořádání ve světě polymerů

Creator:
Olivová, Jana
Format:
print, bez média, and svazek
Type:
article, rozhovory, interviews, model:article, and TEXT
Subject:
Věda. Všeobecnosti. Základy vědy a kultury. Vědecká práce, Štěpánek, Petr, 1952-, plasty, polymery, konference, plastics, polymers, conferences, 12, and 00
Language:
Czech
Description:
The 80 th Prague Meeting on Macromolecules, this time focused on Self-assembly in the world of polymers, took place in Prague on July 10-14, 2016. Its participants discussed theoretical aspects of polymer self-assembly, advanced methods of preparing and characterizing self-assembling macromolecular system; special attention was paid to biomimetic self-assembled nanostructures as well as to biological and technical applications of self-assembled macromolecular systems. and Jana Olivová.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

5. The elements distribution during the co - combustion of coal, wood, sludge, plastics and soap

Creator:
Stach, Martin, Zdeněk Klika, Nováčková, Martina, and Václav Roubíček
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, hnědé uhlí, dřevo, kaly, plasty, mýdla, lignite, wood, sludge, plastics, soaps, co-combustion, elements distribution, 7, and 551
Language:
English
Description:
Combustion of coal with limestone (a) and co-combustion of coal with limestone with wood, sewage sludge, soap and PTP (b) were performed in CFB. Inorganic matter composition and properties of all input materials were characterized. For this, chemical and coal petrography analyses of solid samples as well as their leaching tests, unburned carbon, and other properties were determined. There are not striking differences in composition of bottom and fly ashes from combustion/co-combustion data. In fly ash samples higher concentrations of Hg (about 2 ppm), As (about 800 ppm) and chlorine (about 400 ppm) are present than they are in bottom ash (0.002 ppm Hg, 250 ppm As, and 220 ppm Cl). Also relating concentrations of above elements determined in emissions are very similar for combustion/co-combustion regimes (about 0.010 mg.m-3 Hg, 0.027 mg.m-3 As and 24 mg.m-3 Cl). Content of unburned carbon in BA is below 2 wt.% and in FA below 0.6 wt.% in all combustion/co-combustion data. In FA samples the concentration of Hg, As, Se, etc. increases with increasing unburned carbon content, i.e. with decreasing grain size of FA. No significant differences in composition of emissions, bottom and fly ashes as well as in composition of water leachates were found from the combustion regimes I, II, III and IV., Martin Stach, Zdeněk Klika, Martina Nováčková and Václav Roubíček., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public