Carbonylation reactor of device for synthesizing gas to produce ethylene glycol

Abstract

The invention discloses a carbonylation reactor of a device for synthesizing gas to produce ethylene glycol. The carbonylation reactor comprises a shell, and an air inlet, a refrigerant outlet, an exhaust port and a refrigerant inlet mounted on the shell, wherein a gas distributor is arranged at the air inlet; a gas collecting cylinder and a distribution cylinder are mounted in the shell, and an annular gap is formed between the distribution cylinder and the shell; a reaction chamber is formed between the gas collecting cylinder and the distribution cylinder, and a heat exchange pipe communicating the refrigerant outlet and the refrigerant inlet is arranged in the reaction chamber; the gas collecting cylinder comprises a cylinder part comprising an upper cylinder part, a middle cylinder part and a lower cylinder part which are sequentially connected and communicated with each other from top to bottom; in the up-down direction, the middle cylinder part is located in the middle of the reaction chamber; only the cylinder wall of the middle cylinder part of the gas collecting cylinder is provided with a gas collecting hole which is communicated inside and outside of the gas collectingcylinder. The invention can ensure that the loading amount of a catalyst in the carbonylation reactor is effectively increased in the case of a low pressure drop, thereby reducing the manufacturing cost of the reactor and improving the single production capacity of the reactor.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a carbonylation reactor in a synthesis gas-to-ethylene glycol device. Background technique [0002] The enlargement of each reactor in the ethylene glycol reactor device is the general trend of the competition in the ethylene glycol industry, which is conducive to reducing the investment cost of the device, and is conducive to the cost reduction, energy saving and consumption reduction of the production enterprise. At present, ethylene glycol is generally synthesized by carbonylation and hydrogenation in two steps. The first step is the carbonylation reaction of carbon monoxide and methyl nitrite to generate dimethyl oxalate, and the second step is dimethyl oxalate. Hydrogenation to ethylene glycol. [0003] The carbonylation reactor in the current ethylene glycol reactor device is still basically an axial flow reactor. Because the axial flow reactor is limited by the gas press...

AI Technical Summary

Problems solved by technology

However, due to the different reaction mechanisms, the existing ethylene glycol hydrogenation radial reactor cannot be used as a carbonylation reactor, and it is still necessary to conduct targeted research on the characteristics of the carbonylation reaction.

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