Propionaldehyde hydrogenation reactor

Abstract

The invention discloses a propionaldehyde hydrogenation reactor which comprises a reaction tank body, a fixed support, a plurality of regulators, an inlet pipe and an output pipe; the inlet pipe is fixed at the top of the reaction tank body, and the top of the reaction tank body is communicated with the inside of the inlet pipe; the fixed support is fixed on one side on the outer surface of the reaction tank body; the plurality of regulators are arranged on one side of the fixed support equidistantly, and the insides of the regulators are communicated with one another; the output pipe is fixedat the bottom of the reaction tank body, and the bottom of the reaction tank body is communicated with the inside of the output pipe. The propionaldehyde hydrogenation reactor disclosed by the invention has the benefits that an automatic hydrogenation device is designed, so that the addition of hot hydrogen and cold hydrogen can be automatically switched; the switching between hot and cold hydrogen gas inlets is automatically controlled by a motor; hydrogen gas is directly introduced into a catalyst layer and is mixed with mixed gas by the internal stirring regulators, so that not only is thetemperature of the catalyst layer is more quickly regulated, but also the mixing degree of the hydrogen gas with the mixed gas can be increased, therefore, the catalytic effect is further improved.

Description

technical field [0001] The invention relates to the technical field of propanol preparation, in particular to a propionaldehyde hydrogenation reactor. Background technique [0002] Propanol is generally used as a solvent, which can be used in paint solvents, printing inks, cosmetics, etc., used in the production of n-propylamine as an intermediate in medicine and pesticides, and in the production of feed additives and synthetic spices. [0003] The propionaldehyde hydrogenation reactor has a total of 10 catalyst beds, which is equivalent to 10 reactors in series. The materials of the first bed enter from the top, and the materials of the other beds enter from the side, including propionaldehyde, cold hydrogen and hot hydrogen. The reaction temperature range of each bed layer is 110~157°C, the uppermost part is 110°C, and the bottommost part is 157°C. The temperature control of the catalyst in the first bed depends on the adjustment of the feed amount of propionaldehyde. T...

AI Technical Summary

Problems solved by technology

The temperature control of the catalysts in the second to tenth beds depends on the feeding amount of cold hydrogen, hot hydrogen and propionaldehyde. If the temperature at the entrance of a bed is too high, increase the amount of cold hydrogen entering the bed. If If the temperature at the outlet of the bed is still high, reduce the amount of propionaldehyde entering the bed; if the temperature at the inlet of the bed is low, increase the amount of hot hydrogen entering the bed. Hot hydrogen and propionaldehyde gas adjustment, when adjusting, the mixed gas is directly passed into the catalyst layer, and then passed into the reaction layer after mixing, the temperature of the catalyst layer cannot be directly controlled, the reaction effect of the reactants is reduced, and the working efficiency of the equipment is reduced

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