Reactive distillation column and device for preparing methylal

A reactive distillation tower and methylal technology, applied in the field of reactive distillation towers and devices for the preparation of methylal, can solve the problems of reduced production efficiency, complex operation, catalyst deactivation, etc., to improve operating efficiency and reduce raw materials Effects of waste and reduction of environmental pollution

Active Publication Date: 2014-12-10
SHANDONG CHENXIN NEW ENERGY
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In the process of preparing methylal, the impurity ions in the reaction solution will deactivate the catalyst; the existing device needs to regenerate the catalyst with a catalyst treatment agent in the parking state, which has the disadvantages of reduced production efficiency, complicated operation, and the reaction tower Difficult to clean etc.

Method used

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  • Reactive distillation column and device for preparing methylal
  • Reactive distillation column and device for preparing methylal
  • Reactive distillation column and device for preparing methylal

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Embodiment Construction

[0032] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application.

[0033] figure 1 A schematic diagram of a reactive distillation column for preparing methylal provided in the embodiment of the present application (the gas distributor and the liquid distributor are not shown).

[0034] Such as figure 1The shown reactive distillation column includes an independent top gas section 2, a plurality of catalyst packing sections 3 in the middle and a bottom liquid section 4 in the inner space; the top gas section 2 is provided with a top gas outlet 21 and a top gas return port 22, The bottom liquid section 4 is provided with a liquid inlet 41, a bottom liquid outlet 42 and a bottom gas outlet 43; a plurality of catalyst packing sections 3 is composed of three ca...

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Abstract

A reactive distillation column and a device for preparing methylal are provided. The reactive distillation column comprises a top gas section with an independent interior space, a plurality of catalyst filling sections in the middle and a bottom liquid section. The top gas section is provided with a top gas outlet and a top gas material returning port. The bottom liquid section is provided with a liquid inlet, a bottom liquid outlet and a bottom gas outlet. The plurality of catalyst filling sections are independent of one another, and each catalyst filling section comprises a liquid-feeding gas-discharging part, a catalyst filling layer part and a gas-feeding liquid-discharging part. Each liquid-feeding gas-discharging part is provided with a liquid feeding port and a gas discharging port. Each gas-feeding liquid-discharging part is provided with a gas material returning port and a liquid discharging port. The device for preparing the methylal is also provided. The device comprises the reactive distillation column, a condenser, a condensate storage tank and a reboiler. With the reactive distillation column and the device, online processing of regenerated catalysts without shut-down can be achieved.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a reactive distillation tower and a device for preparing methylal. Background technique [0002] In the prior art, for example, the patent application with the publication number CN201755420 discloses a device for preparing methylal, which has a mixer for mixing methanol and formaldehyde, and the outlet of the mixer is connected with methanol and formaldehyde for liquid phase The reaction pre-reactor, the outlet of the pre-reactor is connected with a reactive distillation tower, the middle of the reactive distillation tower is provided with catalyst packing, the upper and lower sides of the catalyst packing are provided with wire mesh packing, and the bottom of the reactive distillation tower is connected with a reboiler The top of the reactive distillation tower is connected with a condenser, and the lower end of the condenser is connected with a reflux tank. [0003] In the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01J8/04C07C43/30C07C41/56
CPCY02P20/10Y02P20/584
Inventor 蔡依进蔡依超孟祥波卢方亮杨朔
Owner SHANDONG CHENXIN NEW ENERGY
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