Liquid-liquid reaction-based oxyalkylation continuous production process and process device thereof

An alkoxylation and reaction technology, which is applied in the field of continuous alkoxylation production process and its process equipment, can solve the problems of complex production process equipment, low production efficiency and large floor space for intermittent alkoxylation reaction

CN105843186AActive Publication Date: 2016-08-10四川鸿鹏新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-08-10

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Abstract

The invention provides a liquid-liquid reaction-based oxyalkylation continuous production process and a process device thereof. The production process is characterized by comprising the steps of setting a control parameter setting value; injecting cooling water; heating a chain initiator and an oxyalkylated reagent; injecting the chain initiator and the oxyalkylated reagent; storing a crude product; controlling the temperature of the chain initiator, the temperature of the oxyalkylated reagent and the reaction temperature of a gap-type reactor 1 during the reaction process; and conducting the cascade regulation for the temperature of the chain initiator, the temperature of the oxyalkylated reagent and the temperature of cooling water during the reaction process. The process device comprises the gap-type reactor 1, a chain initiator feeding assembly, an oxyalkylated reagent feeding assembly, a crude product storage tank 8 and a DCS process controller 9. The first feed inlet 26 of the gap-type reactor 1 and the second feed inlet 25 of the gap-type reactor 1 are simultaneously connected with two discharge ports of the oxyalkylated reagent feeding assembly. The product outlet 27 of the gap-type reactor 1 is connected with the crude product storage tank 8.
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Description

technical field

[0001] The invention belongs to the field of petrochemical industry, and more specifically relates to a liquid-liquid reaction-based alkoxylation continuous production process and a process device thereof. Background technique

[0002] Since the industrialization of alkoxylation (ethyl / propoxylation) in the 1930s, the batch alkoxylation reaction production process has always played an important role and is still in use today. The Italian Press company successfully developed a batch spray-type alkylation reaction production process. Switzerland Buss company has successfully developed a batch loop alkylation reaction production process. At present, the reaction production process applied in the field of alkoxylation production at home and abroad is mainly the batch stirred tank alkoxylation reaction production process, the Italian Press company's intermittent spray alkoxylation reaction production process and the Swiss Buss company's intermittent loop alkoxyla...

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] see Figure 1-Figure 2 , a continuous production process for alkoxylation based on a liquid-liquid reaction in this embodiment, comprising the following steps:

[0045] 1) Set control parameters

[0046] Prepare a control program for the DCS program controller 9, set the temperature of the reaction cooling water at 80-180°C, the temperature of the reaction material at 120-260°C, the pressure of the main pipe 21 of the gap reactor 1 at 8MPa, and the temperature at 280°C. The heating temperature of the starter heater 3 is 95-190°C, the heating temperature of the alkoxylation agent heater 6 is 20-80°C, the pressure of the pressure regulating valve 20 is 3-5.5MPa, and the DCS program controller 9 is opened; The reaction material is a chain initiator and an alkoxylating agent;

[0047] 2) Inject cooling water

[0048] The cooling water inlet regul...