combustion

The combustion characteristics of Chikila coal (CHK) from Nigeria have been examined. It was established that CHK has a high carbon and fixed carbon content, but low nitrogen, sulphur, and ash content. Based on coal heating value, it was classified as a high volatile B bituminous coal. The temperature profile characteristics were examined through thermogravimetric analysis. The combustion kinetics of CHK were examined based on the Kissinger model. It is shown that CHK is a potentially good feedstock for future energy recovery and industrial utilization.

For the municipal solid waste (MSW) to be used in a proper way, it is necessary to implement clean technologies capable of thermal treatment of MSW and RDF in order to produce heat and electricity while meeting current ecological requirements. Nowadays, a number of technologies for MSW/RDF thermal treating are being used worldwide. Among them, the most proven technologies, applicable for industrial introduction, have been considered while analyzing their advantages/ disadvantages accounting for local conditions of Ukraine.

The sources of organochlorine waste formation, its toxicity, and environmental impact are analyzed, and methods of its disposal are considered. The composition of insoluble compounds in the stillage residues of the dichloroethane rectification stage before incineration is determined, and the method of their extraction is proposed.

The study examined the physico-chemical characteristics and combustion kinetics of petroleum coke or petcoke (PCK). The results revealed that PCK contains significantly high carbon, fixed carbon, and calorific value with low sulphur, and ash content. The combustion characteristics of PCK revealed the temperatures of ignition ranged from 764 to 795 K; peak decomposition from 808 to 875 K and burn-out from 857 to 933 K. The combustion performance and reactivity analyses were examined based on the ignition ratio, devolatilization ratio, burnout ratio, and combustion characteristic factor.

2-Cyano-3-[5-(2-oxy-methyl-4-nitrophenyl)-2-furyl]-2-propenamide is a biologically active derivative of furan with reactive centers of donor and acceptor type that is used as a starting material in the synthesis of drugs.

The structure of the substance was confirmed by NMR spectroscopy. The purity of the substance was determined using a system of high-efficiency liquid chromatograph Agilent 1100 HPLC.