Reactor with backflow safeguard

A reactor system comprising a reactor (1), a reactant conduit (2) for feeding a feedstock into the reactor (1) and a product conduit (9) for discharging an at least partly liquid reaction product from the reactor (1), wherein the reactant conduit (2) has a deflection (10) leading from the inlet (3) of the feedstock into the reactant conduit upward to an apex (11) of the deflection (10) and from the apex (11) downward to the outlet opening (4) of the reactant conduit into the reactor (1), and the reactant conduit (2) has a closable ventilation opening (12) at a higher level with respect to the Earth's gravitational field than the inlet (3) of the feedstock into the reactant conduit and higher than the highest possible liquid level of the liquid reaction product in the reactor system.

A method of safeguarding a reactor system comprising a reactor (1), a reactant conduit (2) for feeding a feedstock into the reactor (1) and a product conduit (9) for discharging an at least partly liquid reaction product from the reactor (1), where the reactant conduit (2) has a deflection (10) which leads from the inlet (3) of the feedstock into the reactant conduit upward to an apex (11) of the deflection (10) and from the apex (11) downward to the outlet opening (4) of the reactant conduit into the reactor (1), and the reactant conduit (2) has a closable ventilation opening (12), which is at a higher level with respect to the Earth's gravitational field than the inlet (3) of the feedstock into the reactant conduit and higher than the highest possible liquid level of the liquid reaction product in the reactor system, the method comprising the steps of metrological determination of a signal characteristic of the flow of the feedstock in the reactant conduit (2), and the opening of the ventilation opening (12) when the characteristic signal infringes a preset limit.