Vätgas som biprodukt - En Affär? : Är vätgas som biprodukt från kemisk industri lönsam att använda som drivmedel ur kostnads- ochmiljöperspektiv?

Sammanfattning: As global greenhouse gas (GHG) emissions are continuingly rising, the need for action to reducethese emissions is of importance. The transportation sector is responsible for a large share of thetotal emissions and is heavily fossil fuel dependent. Therefore, new alternatives for fuel are beingevaluated as part of reaching emission-free transport in the future. One of the fuels with thepotential of having a zero-carbon footprint is hydrogen gas. When reacted with oxygen in a fuelcell, hydrogen gas can generate electricity, which can be used to power vehicles and has no directemissions other than water. If the production of hydrogen is made without emissions, the wholecycle is emission free. This could be a solution in reaching a highly reduced carbon-footprintfrom vehicles.As of today, a large amount of hydrogen is formed as a byproduct from chemical industries,a source which many times remains unused. The purpose of this thesis is to answer the questionregarding if hydrogen would be economically and environmentally sustainable to use as fuel forvehicles. According to the literature found, the infrastructure and the number of cars fueled byhydrogen gas in Sweden today is low, which restrains the use of hydrogen for a broader market.A review of the chemical industry in Sweden today has been completed, leading to a specicstudy of Inovyns chloride factory in Stenungsund and the possibilities of selling their hydrogen.The industry produces 237 tons of hydrogen gas as by-product each year, and 167 tons are soldto a nearby industry. In addition to this, 2515 tons are re-used as fuel gas in the said production.The economic incentives have been evaluated using the payback-method. The environmentaleects have been analyzed by quantifying the reduced GHG emissions each year if the hydrogenis used in hydrogen cars instead of fossil fueled cars and busses.The results show a great potential in using hydrogen as a by-product from both perspectivesanalyzed. Therefore, we recommend to further investigate this area and specically researchingthe need of purifying the gas and costs of this, as well as costs of handling and compressing thegas.