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Composite heat exchange filling type micro-reactor

A micro-reactor and reactor technology, applied in chemical instruments and methods, chemical/physical/physical chemical processes, chemical/physical processes, etc., can solve the difficulty of taking heat from the reaction pipeline, increase the pressure drop in the reaction flow process, and increase the reaction temperature. It is difficult to control problems such as high reaction efficiency, large porosity, and compact structure.

Inactive Publication Date: 2008-08-06
成都民航六维航化有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The static mixing elements of the reactor are perforated plates with different apertures and arrangements. The superposition of multiple perforated plates will greatly increase the pressure drop in the entire reaction flow process; the longer reaction pipeline is difficult to obtain heat, and the reaction temperature is not easy to control

Method used

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  • Composite heat exchange filling type micro-reactor
  • Composite heat exchange filling type micro-reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The sintered stainless steel fiber porous composite material is cut into rectangular slices and placed in the heat exchange channel 22 and the reaction channel 42. The porosity of the bed in the channel is 97.6%; the mixed acid with a molar ratio of nitric acid and sulfuric acid of 0.48 is used at 1.60ml / min, benzene The flow rate of 0.5ml / min is pumped into the reaction channel 42; the hot water with an inlet temperature of 48.9°C is pumped into the heat exchange channel 22 at a flow rate of 42ml / min; the hot water outlet temperature is 47.3°C, the reaction product outlet temperature is 60.1°C, corresponding to benzene The conversion rate was 100%, and the nitrobenzene selectivity was 95.7%.

Embodiment 2

[0032] Repeat Example 1. The mixed acid with a molar ratio of nitric acid and sulfuric acid of 0.48 was pumped into the reaction channel 42 at a flow rate of 1.92ml / min and benzene 0.6ml / min; however, hot water with an inlet temperature of 76.6°C was pumped at a flow rate of 42ml / min Enter the heat exchange channel 22; the hot water outlet temperature is 74.2°C, the reaction product outlet temperature is 81.5°C, the corresponding benzene conversion rate is 100%, and the nitrobenzene selectivity is 95.8%.

Embodiment 3

[0034] Repeat Example 1, pump the mixed acid with a molar ratio of nitric acid and sulfuric acid of 0.48 into the reaction channel 42 at a flow rate of 2.24ml / min and benzene 0.7ml / min; but pump hot water with an inlet temperature of 85.9°C at a flow rate of 42ml / min Into the heat exchange channel 22; the hot water outlet temperature is 76.6°C, the reaction product outlet temperature is 95.7°C, the corresponding benzene conversion rate is 98.8%, and the nitrobenzene selectivity is 95.9%.

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Abstract

The invention discloses a complex heat transfer filling micro-reactor, consisting of a heat transfer fluid inlet / outlet seal plate, a heat transfer channel plate, a middle heat transfer disc, a reaction channel plate and a reactant inlet / outlet seal plate; wherein, a heat transfer channel and a reaction channel internally filled with complex materials are arranged on the heat transfer channel plate and the reaction channel plate respectively; the heat transfer fluid inlet / outlet seal plate is provided with at least a heat transfer fluid inlet and a heat transfer fluid outlet; the reactant inlet / outlet seal plate is provided with at least a reactant inlet and a reactant outlet; the middle heat transfer disc is arranged in a middle part with two sides which are respectively provided with the heat transfer channel plate and the reaction channel plate; the heat transfer fluid inlet / outlet seal plate is arranged on the other side of the heat transfer channel plate and the reactant inlet / outlet seal plate is arranged on the other side of the reaction channel plate. The micro-reactor of the invention is simple in structure, easy in processing, easy in amplification and lower in manufacturing cost.

Description

technical field [0001] The invention belongs to the technical field of miniature chemical and chemical equipment, and relates to a micro-reactor integrating micro-heat exchange, mixing and reaction for high-efficiency heat exchange and rapid mixing reaction between fluid media, especially a composite heat-exchange filling for benzene nitration microreactor. Background technique [0002] According to the widely accepted definition of microsystem in the field of chemistry and chemical engineering, a microreactor is a small reaction system in which the channel size of the fluid in the reactor is on the order of submicron to submillimeter. Compared with traditional reaction equipment, microreactor has the advantages of simple structure, no amplification effect, easy control of operating conditions, safety and reliability, etc. The conversion rate and selectivity of the reaction at the micron scale are significantly improved, and the heat transfer coefficient and mass transfer T...

Claims

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Application Information

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IPC IPC(8): B01J19/00
Inventor 路勇李剑锋杨九龙刘晔何鸣元
Owner 成都民航六维航化有限责任公司
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