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Reactor and method for preparing epoxypropane by reactor

A propylene oxide and reactor technology, which is applied in the field of reactors and the preparation of propylene oxide by using the reactor, can solve the problems of increasing separation difficulty, transportation, storage and use danger, etc., and achieves reduction of side reactions, improvement of utilization rate, reduction of Effect of feed amount

Active Publication Date: 2015-09-16
HONGBAOLI GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses high-concentration hydrogen peroxide as an oxidant, which is dangerous for transportation, storage and use; co-solvent methanol needs to be added during the reaction process, which increases the difficulty of separation

Method used

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  • Reactor and method for preparing epoxypropane by reactor
  • Reactor and method for preparing epoxypropane by reactor
  • Reactor and method for preparing epoxypropane by reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 shown and image 3 As shown, a reactor, the reactor is a fixed bed reactor, the middle part of the reactor is filled with an epoxidation catalyst, the top wall is provided with a gas outlet 1, the upper side wall is provided with a liquid outlet 2, and the lower side wall is provided with a 1 A group of injectors, each group of injectors includes 2 injectors 3, distributed on the same plane and symmetrical to each other; as figure 2 As shown, the injector 3 is composed of a nozzle 6 connected to the nozzle and the nozzle, the nozzle 6 is frusto-conical, and the diameter of the end of the nozzle connected to the nozzle is greater than the diameter of the end away from the nozzle. The nozzle 6 extends into the fixed bed reactor, and the nozzle is divided into two sections. The section 7 of the nozzle away from the nozzle is cylindrical, and the other section 8 is truncated conical. The diameter of the end of the nozzle away from the nozzle is larger tha...

Embodiment 2

[0038] Identical to the structure of Example 1, the difference is that the molecular formula of catalyst I is (TiO2) 0.08 (SiO2) 0.02 , the molecular formula of catalyst II is (TiO2) 0.04 (SiO2) 0.06 .

Embodiment 3

[0040] Identical to the structure of Example 1, the difference is that the lower side wall of the reactor is provided with 2 groups of injectors, such as Figure 4 As shown, each injector in the 2 sets of injectors is 90 degrees to each other.

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Abstract

The invention discloses a reactor. The middle of the reactor is filled with an epoxidation catalyst, the top wall of the reactor is provided with a gas outlet, the upper side wall of the reactor is provided with a liquid outlet, the lower side wall of the reactor is provided with one or two groups of injectors, each group of the injectors comprises two injectors symmetrically distributed on the same plane, the injector comprises a jet pipe and a nozzle connected to the jet pipe, the nozzle is frustoconical, the diameter of one end of the nozzle connected to the jet pipe is greater than that of the other end, the nozzle stretches into a fixed bed reactor, the jet pipe comprises two sections, the section of the jet pipe far away from the nozzle is cylindrical, the other section is frustoconical, and the diameter of one end of the jet pipe far away from the nozzle is greater than the diameter of one end of the jet pipe connected to the nozzle. The invention discloses a method for preparing epoxypropane by the reactor and a reaction system composed of the reactors connected in series. The reactor realizes reactant high-speed clashing mixing, improves reactant mixing effects, improves heat and mass transfer effects and improves a cumene hydroperoxide conversion rate and epoxypropane selectivity.

Description

technical field [0001] The invention provides a reactor for preparing propylene oxide and a method for preparing propylene oxide using the reactor. Background technique [0002] Propylene oxide (propylene oxide), as an important basic organic chemical raw material, is mainly used in the industry to prepare polyether polyols, propylene glycol, alcohol amines and various nonionic surfactants, and its derivatives are widely used in petrochemical , construction, home appliances, automobiles, medicine, pesticides, textiles, daily chemicals and other industries. However, traditional propylene oxide production processes such as chlorohydrin method or co-oxidation method have disadvantages such as heavy pollution, high corrosion, many co-products, and high cost. Therefore, countries are actively developing green propylene oxide production technology with simple process, clean economy. [0003] Japan's Sumitomo Chemical Company developed the cumene hydroperoxide method (hereinafter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/04C07D301/12C07D303/04
Inventor 邢益辉唐黎张益军黄东平范春元
Owner HONGBAOLI GRP CO LTD
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