Multi-bed layer shaft radial synthesizing tower

Abstract

A multi-bed axial radial synthesis tower for the preparation of ammonia or methanol is disclosed. The tower consists of an external cylinder and an internal cylinder; the internal cylinder is divided into three layers from the top to the bottom; the third layer is provided with a lower heat exchanger; the second layer is provided with an upper heat exchanger and the periphery is provided with a cooling tube bundle heat exchanger; the upper heat exchanger is connected in series with the lower heat exchanger; a cylinder wall of the upper heat exchanger is provided with a communication hole; an upper end of the upper heat exchanger is communicated with a first layer through an air collector; a lower port of a central tube is positioned in the upper heat exchanger and an upper port of the central tube is located on an upper part of the first layer; a cylinder wall of the internal cylinder is provided with a radial basket ring gap, which is communicated with the second layer and the third layer; one side of the cooling tube bundle heat exchanger is communicated with an upper part of the ring gap of the external cylinder, an upper port of an upward tube on the other side is positioned on an upper part of the first layer; a catalytic bed in the internal cylinder is divided into three layers and four segments; the first layer is an axial adiabatic reaction segment, the second layer consists of a radial adiabatic reaction segment and a radial internal cooling segment, and the third layer is a radial adiabatic reaction segment. The tower has a simple structure, a high net value of the production of ammonia or methanol, a high utilization rate of energy, a low circulating power consumption and remarkable energy saving effects.

Description

technical field [0001] The invention relates to a multi-bed axial and radial gas-solid phase reactor used in ammonia synthesis and methanol synthesis production. Background technique [0002] Ammonia synthesis reaction is H 2 and N 2 The gas reacts in the catalytic bed to generate ammonia, and the synthesis reaction of methanol is CO, CO 2 and H 2 The reaction is carried out in the catalytic bed to produce methanol. Both reactions are exothermic reversible reactions, and both require catalysts, but the catalysts are different. The former is an iron-based solid catalyst, and the latter is a copper-based solid catalyst. [0003] The structure of the existing gas-solidification chemical reactors used in ammonia synthesis and methanol synthesis production is not reasonable enough, the resistance of the reaction air flow is relatively large, the utilization rate of heat energy is low, and the cycle power consumption is high, so it needs to be improved. Contents of the inven...

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Problems solved by technology

[0003] The structure of the existing gas-solidification chemical reactors used in the production of ammonia synthesis and methanol synthesis is not reasonable enough, the resistance of the reaction air flow is relatively large, the utilization rate of heat energy is low, and the cycle power consumption is large, which needs to be improved

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