Dangerous wastes from industrial processing, such as tars, wastewaters from lignite
pyrolyses, and so on, were usually released untreated and often uncontrolled into the environment (Stottmeister et al.
DSC [T.sub.g] [T.sub.5]wt%/K [T.sub.max]/K /K[+ or -] [+ or -] 5 [+ or -] 5 s EP 415 637 685 EP/5%TPPMMT 415 637 685 H!75%TPPMMT/I0%CP 405 639 685 EP/10%CP 405 637 689 EP/I5%CP 405 639 689 Thermogiavimetry Mass loss Residue (up to (at 720 K)/wt% 1000 K)/wt% [+ or -] 3 [+ or -] 3 EP 88 7 EP/5%TPPMMT 80 13 H!75%TPPMMT/I0%CP 76 IS EP/10%CP 79 16 EP/I5%CP 72 22 The
pyrolyses of TPPMMT, CP, and TPPMMT/CP (1:1) were compared with each other (Fig.
The combustion process runs at 1,000[degrees]C and the combustion front
pyrolyses the coal behind it.
* Thermo chemical processing (such as
pyrolyses or degassing).
Pyrolysis experiments proved that the coal alone, heated in a single stage at a standard rate (used for coke production and standard pyrolyses (Roubicek and Buchtele, 2002) of 3 K [min.sup.-1] to the final temperature of 900 [degrees]C yielded pyrolysis gas with a content of 54% [H.sub.2] and 22% C[H.sub.4].
These amounts were practically almost the same as in the case of the two-stage pyrolyses of coal alone, and therefore the temperature of the second stage was increased to 1200 [degrees]C.
Properties of the gas mixtures calculated according to above-mentioned technical gas constants standard and based on results obtained both from pyrolyses and co-pyrolyses are summarized in Table 6.