Ethoxylation reactor

Abstract

The invention provides an ethoxylation reactor and belongs to the field of chemical production. The danger that a reactor is suddenly stopped as the viscosity of a substance is increased and the pressure of a circulation pump is increased is avoided, and meanwhile the use range of the reactor is expanded. The ethoxylation reactor mainly comprises a reactor kettle 1, an ethylene glycol sample inlet 2, a circulation pump 3, an ethylene oxide sample inlet 4, spray type nozzles 5 and a frequency variable stirrer 6, wherein a plurality of the spray type nozzles 5 are arranged on the upper part of the inner wall of the reactor kettle 1; the ethylene glycol sample inlet 2 is connected with the spray type nozzles 5; one end of the circulation pump 3 is communicated with the bottom of the reactor kettle 1; the other end of the circulation pump 3 is connected with the spray type nozzles 5; a reactant at the bottom of the reactor kettle 1 passes through the circulation pump and is atomized through the spray type nozzles and fed into the reactor to continuously react with ethylene oxide which is not completely reacted; the ethylene oxide sample inlet 4 and the ethylene glycol sample inlet 2 are respectively formed in two sides of the top of the reactor kettle 1; and the frequency variable stirrer 6 extends into the reactor kettle 1.

Description

technical field [0001] The invention belongs to the field of chemical production, in particular to an ethoxylation reactor. Background technique [0002] Ethoxylation refers to the ring-opening addition reaction between ethylene oxide and organic compounds containing active hydrogen under the action of a catalyst. Ethoxylation is an important technology for preparing nonionic surfactants. Ethoxylation Nonionic surfactants have excellent biodegradability and adaptability to hard water, and are widely used in industrial fields such as detergents, petroleum and pesticides. [0003] In the prior art, conventional reactors and Prius reactors are generally used for ethoxylation reactions. Prius external circulation ethoxylation equipment has the advantages of high efficiency, safety, energy saving, and fast reaction rate, and is widely used in gas-liquid state Chemical reaction, but Prius external circulation ethoxylation equipment is only suitable for the synthesis of low and me...

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Problems solved by technology

[0003] In the prior art, conventional reactors and Prius reactors are generally used for ethoxylation reactions. Prius external circulation ethoxylation equipment has the advantages of high efficiency, safety, energy saving, and fast reaction rate, and is widely used in gas-liquid state Chemical reaction, but Prius external circulation ethoxylation equipment is only suitable for the synthesis of low and medium molecular weight products. When producing and stirring high viscosity materials and products with large molecular weight, the load of the circulating pump is increased, which is prone to sudden stop situation, and the material continues to react in the kettle, there is a greater safety risk

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