PROCESS AND DEVICE FOR PRODUCING NITROBENZENE

The invention relates to a continuously operating process for producing nitrobenzene. The method comprises the following steps of a) nitriding benzene in adiabatic conditions with sulfuric acid and nitric acid, by using a stoichiometric excess of benzene in relation to the nitric acid, in multiple parallel reactors; b) firstly combining the raw process products of the nitridation from the parallel reactors to form a mixed flow in a device provided specifically for this purpose, then separating the mixed flow into a sulfuric acid phase and a nitrobenzene phase in a downstream phase separation apparatus; and c) processing the nitrobenzene phase, and obtaining nitrobenzene. The invention also relates to a production plant suitable for carrying out the claimed process. 本发明涉及一种用于制备硝基苯的连续运行的方法，包括以下步骤：a)在多个并行运行的反应器中在绝热条件下用硫酸和硝酸硝化苯，基于硝酸计，使用化学计量过量的苯；b)首先将来自并行运行的反应器中的粗硝化工艺产物在专门为此目的而提供的设备中合并成混合流，然后在布置在下游的相分离设备中将该混合流分离成硫酸相和硝基苯相；c)后处理硝基苯相，获得硝基苯。本发明此外涉及适合实施该方法的生产装置。