Abstract: A device for carrying out a chemical reaction by a continuous method has a reactor with at least two reactor sections which define a direction of flow. The reactor has plug flow properties along the direction of flow. A recirculation line is present to withdraw a partial flow from the reactor at a first point and return it to the reactor at a second point located above the first point in the direction of flow. Means are provided which prevent a temperature increase in the reactor over a predetermined temperature range, for example change of more than approximately 50 K.

Abstract: In a method for monitoring a chemical reaction in a continuously operated reactor with at least one tube section, wherein the reactor has an intake, an outlet and a main flow direction running between the intake and the outlet, substances are supplied to the reactor via the intake and a product mixture made up of these substances and the solidified products thereof is created in the reactor. The reaction is monitored and measures are taken to prevent an uncontrolled reaction process, wherein these measures comprise at least the following steps: interruption of the intake and outlet, active pressure relief of the reactor and flushing of the reactor with an inert substance. This facilitates a safe and efficient interruption of the chemical reaction.

Abstract: A device for carrying out a chemical reaction by a continuous method has a reactor with at least two reactor sections which define a direction of flow. The reactor has plug flow properties along the direction of flow. A recirculation line is present to withdraw a partial flow from the reactor at a first point and return it to the reactor at a second point located above the first point in the direction of flow. Means are provided which prevent a temperature increase in the reactor over a predetermined temperature range, for example change of more than approximately 50 K.

Abstract: A static mixing device has a flow duct (10) with at least one mixing element (12) arranged in the flow duct (10). Each mixing element (12) has a multiplicity of webs (14A, 14B) which are arranged in a crossed fashion and which enclose an angle (?) of greater than 0° with the longitudinal axis (x) of the flow duct (10). The webs (14A, 14B) are of waisted design between adjacent crossing points (16), and in the middle between adjacent crossing points (16) the webs (14A, 14B) have their smallest width (b) and mutually adjacent webs (14A, 14B) have their greatest intermediate spacing (a).

Abstract: A static mixing device has a flow duct (10) with at least one mixing element (12) arranged in the flow duct (10). Each mixing element (12) has a multiplicity of webs (14A, 14B) which are arranged in a crossed fashion and which enclose an angle (?) of greater than 0° with the longitudinal axis (x) of the flow duct (10). The webs (14A, 14B) are of waisted design between adjacent crossing points (16), and in the middle between adjacent crossing points (16) the webs (14A, 14B) have their smallest width (b) and mutually adjacent webs (14A, 14B) have their greatest intermediate spacing (a).