Experimental Study Of The Co-pyrolysis Of Tobacco Stem And GRT

A lot of tobacco stems that are by-products from tobacco production are abandonded every year.It is not suitable for fuel and desirable straw as fertilezer. It not only wastes available resources, but also causes environmental pollution. So it is significant to study industrial application of tobacco stems in terms of environmental protection and raising farmers'income.Tire material is mainly natural rubber, synthetic rubber and a small amount of other chemical additives. If the replacement tire are not properly handled, they are not only a waste of resources, but also leads to environmental pollution, and even cause fire, mosquitoes transmitted diseases and other issues. That carry out processing and utilization of waste tire recycling is turning waste into treasure, turn harm into prevention and control of environmental pollution of waste rubber is an important way to protect the environment and develop recycling economy. so that waste rubber resources, recycling, re-use of tools,are implement the international environmental Convention and the basis for diplomatic work. China in rubber consumption is a big country, but the rubber resources are very scarce.So it have to import a large number of rubber annually to meet the rapid growth of the domestic market needs, external dependency is close to 50%, and thus initiated the use of waste tire recycling is particularly important.Tobacco stems and GRT co-prolysis characteristics were studied with thermal analysis instrument and pyrolysis kineticses were investigated based on thermal data. For seeking suitable ways, tobacco stem and GRT co-prolysis were studied experimentally, which provides some fundamental datas for industrial application of tobacco stems and GRT.The thermal analysis experiments were performed up to 800℃at heating rates of 10,20,30,40and 50℃/min in a dynamic nitrogen flow of 50mL/min.According to TG and DTG, there were three weight loss stages in the pyrolysis process, and weight lost remarkly during 160～490℃. Pyrolysis activation energies calculated by FWO and Popescu methods respectively were approximately identical, and activation energies increased as reaction conversion increased.Results of tobacco stems prolysis and GRT co-pyrolysis indicated that the optimum condition for maximum liquid yiely was particle diameter 18-40 mesh, prolysis temperature 450℃. And the maximum yield of liquid was 42.30%. The additive in HZSM-5 load MoO3 (CoO) can increase the yield of liquid.The additives in Fe2 (SO4) 3, NaOH, H2SO4, HZSM-5 were reduced to varying degrees of liquid yield. The gas chromatography and chromatography-mass spectrometer were used to analyz tobacco stems and GRT co-pyrolysis liquid products and gas products.The results showed that the major gas products are CO, CO2, H2 and CH4 etc.and the main liquid product is nicotine, acids, aldehydes, ethers, esters, alcohols, ketones, hydrocarbons and heterocyclic compounds.