Micro-reactor system with pulse diameter-variable microstructure

A technology of micro-reactor and micro-structure, applied in chemical/physical/physical-chemical reactors, chemical instruments and methods, chemical/physical/physical-chemical processes, etc., can solve problems such as high processing costs and complex structures, and achieve flexibility and convenient adjustment, reduce environmental impact, and achieve the effect of output upgrade

Inactive Publication Date: 2016-07-13
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing microchannel reactors are generally manufactured by photolithography, laser chemical three-dimensional writing and other methods, which often have the disadvantages of complex structure and high processing cost.

Method used

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  • Micro-reactor system with pulse diameter-variable microstructure
  • Micro-reactor system with pulse diameter-variable microstructure
  • Micro-reactor system with pulse diameter-variable microstructure

Examples

Experimental program
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Effect test

Embodiment 1

[0041] If microreactor system of the present invention is used to produce nitroguanidine product, concrete technological process is with reference to figure 1 , Image 6 with Figure 16 As shown, the raw material tanks (1, 2) are configured with different concentrations of guanidine nitrate aqueous solution and concentrated sulfuric acid. Set the flow control of the metering pump (3, 4), change the molar ratio of the aqueous solution of guanidine nitrate and concentrated sulfuric acid, control the flow rate and pressure of the aqueous solution of guanidine nitrate and concentrated sulfuric acid (5, 6), and pass the materials through the Y-type material fluid The feed inlet (11) is driven into the 316L stainless steel (SS316L) microchannel reactor system (7) with continuous pulse variable diameter microstructure (20, 30), and the reaction temperature is exchanged by the heat exchanger (8), and the heat conduction The liquid flows in through the heat exchanger inlet (15) and f...

Embodiment 2

[0043] The structure of the microchannel reactor in Example 2 is basically the same as that in Example 1, except that the material of the microchannel reactor in this example is Hastelloy (HC22 or HG35), the reaction temperature is 200°C, and the pressure is 2Mpa. The microchannel reaction system with continuous pulse variable-diameter microstructure provided by the patent of the present invention can operate the reactor in a wide range of pressure and temperature (the pressure can reach up to 10MPa, and the temperature range is -100~350℃), and it also has relatively Wide chemical corrosion resistance and wide chemical compatibility can be applied to many reaction types of nitrification, saponification, oxidation and hydrogenation. According to the different working conditions of the reaction type, the reactor module can be freely and flexibly combined into the designed reactor, and multi-step operations can be realized, such as premixing, preheating, material mixing, reactor o...

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Abstract

The invention discloses a micro-reactor system with a pulse diameter-variable microstructure and relates to the technical field of micro-reactors.The system comprises a raw material tank, a metering pump, a pressure gauge, a micro-reactor, a heat exchanger and a product collecting tank.The micro-reactor system has the advantages that the core unit of the system is the micro-channel structure inside the micro-reactor, the micro-channel structure can well enhance the material mixing effect, materials from two feeding inlets simultaneously enter a micro-channel pipeline with the pulse diameter-variable microstructure, the pulse diameter-variable microstructure allows the system to be in an evenly dispersing state after the high-speed cross collision of fluid, the fluid then enters the micro-channel with the continuous variable diameters, and the mixing effect of separation first and then combination is achieved; the channel of the reactor is high in heat exchanging ability, the system temperature is allowed to stay at the temperature beneficial to reaction, and the system is mild in reaction condition, short in reaction time, high in raw material utilization rate, capable of achieving effective control of a reaction process, safe and stable, capable of achieving continuous operation and high in production efficiency.

Description

technical field [0001] The invention relates to the technical field of micro-reactors, in particular to a micro-reactor system with a pulse variable-diameter microstructure for nitrification, saponification, oxidation and hydrogenation reactions. Background technique [0002] Microchannel reactor refers to a micro-device with a characteristic scale below several hundred microns, which has the advantages of high mass and heat transfer efficiency, low back-mixing probability, and better control of reaction temperature and residence time. However, the existing microchannel reactors are generally manufactured by photolithography, laser chemical three-dimensional writing and other methods, which often have the disadvantages of complex structure and high processing cost. The metal material continuous flow microchannel reactor (IFR reactor) system breaks through the heat transfer and mass transfer barriers of traditional tank reactors, allowing chemical reactions to proceed in a co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00
CPCB01J19/0093B01J2219/0081B01J2219/00822B01J2219/00891
Inventor 孙萌张跃朱玥丁晓丹刘建武陈代祥朱竹青严生虎钱弘佳戚晶晶沈程周子晗吴炳泉王艺文
Owner CHANGZHOU UNIV
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