REACTOR FOR CARRYING OUT HIGH PRESSURE REACTIONS, METHOD FOR STARTING AND METHOD FOR CARRYING OUT A REACTION

摘要

The invention relates to a reactor for carrying out high pressure reactions, comprising at least one tube (31), the ends of which pass through respective tube sheets (33) and connect to the tube sheets (33). The tube sheets (33) and the at least one tube (31) are enclosed by an outer shell so that an external space (39) is formed between the tube (31) and the outer shell. The tube sheets (33) each comprise at least one surface made of a nickel base alloy, and the at least one tube (31) is welded to the surface made of the nickel base alloy. The surface made of the nickel base alloy faces in the direction of the respective end of the reactor. The outer shell has a thickness sufficient to absorb stress forces that occur as a result of a difference in expansion due to a temperature difference between the tube (31) and the outer shell. The invention further relates to a method for starting up the reactor and for carrying out an exothermal reaction in the reactor.