FRELP: progress in May 2014
Methodology of detachment EVA GLASS
During the month of May has solved the most important problem related to the detachment of the glass of the photovoltaic panel from the “sandwich” EVA + silicon.
As anticipated in April, through the prototype developed by Sasil, several options have been tested, both from the point of view of the heat treatment, which, under the appearance of the actual posting.
At the end is a good result was achieved with the use of three systems of preliminary heating and two technical solutions for the phase of final separation of the glass.
The purpose of separating the pure glass was obtained with the use of total energy less than 100 kWh/t.
You will need to optimize the system by the end of June 2014 in order to collect all the data for the final design of the pilot plant will be sized as expected for a flow rate of 1 t/h, and processed for whole panels 1 meter long.
For now the prototype is able to work on strips of panel of 250 mm and have already been obtained significant samples of glass and of “sandwich”. The glass has already been further purified with a separator with excellent optical results.
The “sandwich” destined to pyrolysis has been chopped into small pieces of centimetric size and tested in pyrolysis at the laboratory Sasil, with the current equipment, which, however, proved to be not entirely suitable.
We decided to purchase new laboratory equipment for testing of pyrolysis, suitable to process the “sandwich” in nitrogen atmosphere and with appropriate measuring instruments to control the outflows.
In any case, by preliminary tests were obtained significant information on the procedures pyrolysis suitable in this particular type of pyrolysis expected in discontinuous and in space inertized with nitrogen.
Were made attemps to solubilize the ashes of pyrolysis but due to lack of adequate standard elements to be searched, we postponed further such tests, when we have the appropriate standard.