Performance Evaluation of Throatless Gasifier Using Pine Needles as a Feedstock for Power Generation

Abstract

This paper deals with the performance evaluation of a throatless gasifier TG-SI-10E. Evaluation of the throatless gasifier was done in three streams, which were the thermal, design and economic aspects. It was tested with pine needles, derived from the Himalayan chir pine (Pinus roxburghii). A non-isokinetic sampling technique was used for measuring the tar and dust contents. The carbon dioxide and carbon monoxide emission at the exhaust of engine was in the range of 12.8% and 0.1-0.5% respectively. The maximum temperature of producer gas measured at the outlet of the gasifier was 505 °C. The specific biomass consumption rate of pine needles was calculated to be 1.595 kg/kWh (electrical). Specific gasification rate for the given design was found to be 107 kg/m 2 h. Economic evaluation was based on direct tax incidence.

Parametric Study of NTH Order Distributed Activation Energy Model for Isothermal Pyrolysis of Forest Waste Using Gaussian Distribution

“…The asymptotic technique accurately predicts the behaviour of experimental data at the beginning and the end of biomass pyrolysis. Dhaundiyal and Singh (2016) have performed the experiment under the non-isothermal condition for pine needle sample and it has been reported that the effect of variation of reaction order on the numerical results is not as much as in the isothermal condition. Moreover, the range of variation of activation energies in pine needles is wider than that of Cedrus deodara.…”

“…It is a large evergreen deciduous tree, tall up to 65 m and has sharppointed acicular structure with silvery stiff leaves. Unlike pine needles (Dhaundiyal and Tewari, 2015;Dhaundiyal and Tewari, 2016), Cedrus deodara forest covers 2.24 lakh hectares of forest land, constituting 64.79% of total forest area in Uttarakhand (Tewari et al, 2010). Forestry waste can be considered an excellent substrate for synthesizing of the biofuel.…”

Thermo-kinetics of Forest Waste Using Model-Free Methods

“…Chir pine (Pinus roxburghii) forests are predominately found at 500 to 2 000 m of the Himalayan range of India, Bhutan and Nepal, therefore it is indispensable to identify their attributes as a new alternative source of energy. Uttarakhand, one of the Northern states of India, has been the sole contributor of 2 million tonnes of pine needles annually through 17 forest divisions located in 12 different districts [1]. The ample forest waste is available for energy generation; hence, assuming it as a rubbish on the forest floor is unethical and uneconomical.…”

“…They overlooked the intermediate stages of the gasification process and the whole study was carried out to fulfil the thermal aspect of the process. Later, Dhaundiyal and Tewari [1,6] worked on the designing aspects of the gasifier reactor as well as the relative importance of pine needles to coal gasifier. The feed rate is estimated to be 21 kg/h for the 10 kW power plant [1], whereas the rice husk gasifier requires 28 kg/h [7] at the same rated power.…”

Improving the Efficiency of Pyrolysis and Increasing the Quality of Gas Production through Optimization of Prototype Systems

“…After all, the drive compression force must be greater. In an existing system, this can only be achieved by increasing the pressure difference (increasing the vacuum) [37,38].…”