Axial flow fixed bed reactor with built-in modular catalyst cooler

Abstract

The invention discloses an axial flow fixed bed reactor with a built-in modular catalyst cooler. The reactor includes a reactor shell, the modular catalyst cooler and a catalyst cooler supporting structure. The modular catalyst cooler includes a plurality of independent catalyst cooler bodies, and the independent catalyst cooler bodies are connected with corresponding pipelines on the reactor shell through independent heat exchange medium inlet pipelines and independent heat exchange medium outlet pipelines.

Description

technical field [0001] The invention relates to an axial flow fixed-bed reactor with a built-in modularized heat collector, which belongs to the technical field of chemical equipment. Background technique [0002] The main reaction in the chemical plant is an exothermic reaction, and its main reactor generally has the function of taking heat. For the axial flow fixed bed reactor, the common tubular fixed bed reactor in the prior art is a reactor form in which the heat exchange tubes (or reaction tubes) can be uniformly covered in the reactor shell, such as The reactor structure form disclosed by CN 103769005B. For this type of reactor, the tube side and the shell side are used as the reaction site and the heat extraction site respectively. The catalyst is packed in the heat exchange tube. When the reaction medium passes through the heat exchange tube, it contacts with the catalyst and reacts. Media removed. However, in the process of enlarging the scale of the tubular fix...

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Problems solved by technology

However, in the process of enlarging the scale of the tubular fixed bed reactor, due to the limitation of the equipment structure, it is easy to cause the difficulty of equipment manufacturing and the leakage of the pipe joint. For example, the diameter of the reactor increases, the diameter of the tube sheet increases, and the thickness increase, the processing of large forgings is more difficult; another example is the selection of longer heat exchange tubes, because the expansion difference between the tube side heat exchange tube and the shell side cylinder increases proportionally with the increase of the tube length, resulting in heat exchange tubes and tubes Plate welded joints have high stress levels, which can easily lead to leaks

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