Investigation of possibility to utilise agricultural waste in gas generator with parametric process control
2020
Savinyh, P., Federal Agricultural Research Centre of the North-East named after N.V. Rudnitsky, Kirov (Russian Federation) | Palicyn, A., Vologda State Univ. (Russian Federation) | Ivanovs, S., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Korotkov, A., Andoga Ltd. (Russian Federation)
Agriculture is one of the leaders in the production of waste at various stages of creation of the basic agricultural product. Economically attractive are those energy technologies, in the process of which both energy and new commercial products are produced (for example, organic or mineral fertilizers). The article deals with an option of energy processing of agricultural waste using a gas generator technology that makes it possible to obtain from the agricultural waste both thermal energy, gaseous fuel for technological needs, and concentrated mineral fertiliser. The patented innovation in the gas generation technology is application of parametric regulation of the gasification process. In the developed experimental prototype of the gas generator unit the thermal energy, obtained during the agricultural waste processing, can be used to dry a new portion of waste, going to gasification. Gaseous fuel, after cooling and purification, is sent to the internal combustion engine operating together with the electric generator or it is burned in a gas burner to produce thermal energy. A by-product of thermal processing of agricultural waste is a concentrated mineral fertiliser – ash, the amount of which varies from 2.09 to 33 %, depending on the kind of fuel used for gasification. The innovative control system of the gas generator unit allows not only optimisation of the gas generation process, but also switching from one kind of fuel for gasification to another, without making structural changes to the gas generator. At one type dynamic loading the response time to an external disturbance was 12 s, with a maximum change in the rotation speed of the ICE crankshaft to 2310 rpm; and 8 s, with a maximum change in the rotation speed of the ICE crankshaft to 2700 rpm.
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