A kind of microreactor device and preparation process for producing 2-hydroxyethylhydrazine

Abstract

The invention discloses a microreactor device for producing 2-hydroxyethylhydrazine and preparation process. The device comprises a feeding system, a mixing system, a reaction system, a backpressure valve, a cooling receiving system, a washing system and an external circulating bathing system, wherein the feeding system comprises a hydrazine hydrate storing tank, an oxirane storing tank and a feeding pump; the mixing system comprises a CPMM or SIMM or Starlam serial micro mixer; the reaction system comprises a rimule reactor section; the pressure of the backpressure valve ranges from 0 to 15MPa; the cooling receiving system comprises a CRMH serial micro heat exchanger and a receiving storing tank; the washing system comprises a washing storing tank and a washing pump which are connected in series; the hydrazine hydrate storing tank or oxirane storing tank, the feeding pump, the micro mixer, the rimule reactor, the backpressure valve, the micro heat exchanger and the receiving storing tank are connected in series; the mixing system, the reaction system and the cooling receiving system are respectively arranged at the circulating bathing system.

Description

technical field [0001] The invention relates to a microreactor device, in particular to a microreactor device capable of efficiently and safely producing 2-hydroxyethylhydrazine. Background technique [0002] 2-Hydroxyethylhydrazine is a colorless or light yellow viscous oily liquid, easily soluble in water, ethanol and other solvents, and is a strong reducing substance. 2-Hydroxyethylhydrazine is an important intermediate raw material for the synthesis of furazolidone. In addition, it can also be used as a plant growth regulator, a stabilizer for polyurethane and polyacrylonitrile, an oil well corrosion inhibitor, and an epoxy resin curing agent and crosslinking agent. [0003] Regarding the synthesis of 2-hydroxyethylhydrazine, from the reported synthesis method, it is mainly that ethylene oxide gas is slowly passed into the hydrazine hydrate solution at a certain temperature to undergo an addition reaction, and most of the hydrazine is removed under reduced pressure after...

AI Technical Summary

Problems solved by technology

However, this practice of continuously increasing the amount of hydrazine hydrate has greatly increased the cost of raw materials in industrial production, and the energy consumption of recycling hydrazine hydrate has also increased accordingly. The investment in equipment is large but the production capacity is low; on the other hand, industrial scale-up production means that ethylene oxide The amount of feed increases, the reaction time prolongs, the side reaction increases, and the product quality decreases

At present, conventional industrial production is facing problems such as high raw material cost, high energy consumption, low production capacity, poor product quality, and amplification effect. However, the flammable and explosive characteristics of ethylene oxide make the safety problem cannot be ignored.

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