A process for producing synthesis gas, by providing a feed gas stream, the feed gas stream including a hydrocarbon, preferably methane, and steam; heating of at least one part of the feed gas stream in a first steam reformer using heat of combustion; and converting of the heated feed gas stream into a synthesis gas stream of CO and H2 in a reforming step. At least one part of the feed gas stream is heated outside the first steam reformer, at least partly using electric energy.
展开▼