Multi-interval reaction device

Abstract

The invention discloses a multiplex interval reaction device which is mainly applied to converting synthesis gas into methyl alcohol; the reaction device is provided with a three-phase reactor; an air flow bed is arranged above the reactor and a slurry foam bed is arranged below the reactor; the slurry foam bed area is provided with a plurality of reaction intervals and a plurality of pore plate devices, and a plurality of reaction intervals are separated by a plurality of pore plate devices; the hole of the pore plate device can load reaction accelerant and can lead the synthetic raw gas to pass; in addition, the hole can be of arbitrary shape and size so as to be filled with the accelerants with different size or with different characteristic series.

Description

technical field [0001] The invention relates to a multi-interval reaction device, in particular to a multi-interval reaction device for converting synthesis gas into methanol. Background technique [0002] Methanol is an important chemical raw material. It is commonly used in the industry to produce formaldehyde, acetic acid and other derivatives. It can also be dehydrated to produce dimethyl ether (Dimethyl Ether, DME). On the other hand, methanol is in a liquid state at normal temperature and pressure, and it is easy to release hydrogen. It is a medium fuel that is convenient to carry hydrogen. It is used in fuel cells. It has sufficient sources, is easy to store, and is cheap. It is one of the ideal alternative fuels. [0003] The methods for industrially synthesizing methanol mainly include the following commercial processes in the early stage (Rodney J.Dry, 1988): 1.Lurgi Tubular Packed Bed Reactor, 2.ICI Quench Reactor, 3.Casale Mixed Flow Reactor, 4.Open- Catalyst Qu...

AI Technical Summary

Problems solved by technology

Most of the traditional methanol synthesis processes have the disadvantages of low single-pass conversion (less than 10%) and difficult control of reaction temperature. Taking Lurgi's Shell-and-tube reactor as an example, when the pressure is 5.0MPa, methanol The outlet concentration is 7.12% (mol); in addition, under the pressure of 8.4MPa in the quenching reactor of ICI, the outlet concentration of methanol is 4% (mol)

[0004] However, in the current commercial process of converting syngas to methanol, the single-pass conversion rate of methanol is mostly 10% or less, and there are common problems such as difficult temperature control, low catalyst utilization rate, and too short residence time of reaction gas, so that the conversion rate cannot be improved.

Images