Efficient multi-nozzle polyether polyol preparation device and process

A technology for polyether polyols and preparation devices, which is applied in the direction of feeding devices, chemical/physical/physical-chemical fixed reactors, chemical instruments and methods, etc., and can solve the problem of increasing control nodes, uneven molecular division, and inability to Problems such as the production of high molecular weight products

CN113332941APending Publication Date: 2021-09-03张海胜
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-09-03

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Abstract

The invention relates to an efficient multi-nozzle polyether polyol preparation device and process, and especially relates to an improved system of one or two alkoxide and reaction liquid feeding modes in the polyether polyol preparation process. The device mainly comprises: a reactor cylinder; a prepolymer inlet; an alkoxide inlet pipe; a reaction liquid spiral mixing inlet pipe; a manhole; an agitator motor; a relief valve port; a vacuum outlet; a nitrogen inlet; atomizing nozzles; and a stirrer paddle, a material outlet and the like. According to the efficient multi-nozzle polyether polyol preparation device and process, the alkoxide and the reaction solution are premixed before entering the reactor, and 4-6 sets of atomizing nozzles can mix, atomize and spray out, so that the purposes of narrower molecular weight distribution and more homogeneous effect in organic polymer synthesis production are achieved.
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Description

technical field

[0001] The invention relates to a high-efficiency multi-nozzle polyether polyol preparation device and process, in particular to an improved system of one or two alkoxide feeding modes, which is mainly used in the field of polyether polyol preparation. Background technique

[0002] The downstream application of polyether polyols is mainly in the polyurethane industry. Polyurethane products are advanced polymer composite materials, which are of great significance to promoting my country's energy conservation and emission reduction and the development of low-carbon economy. The polyurethane industry chain including raw material polyether polyols belongs to the recent years. In recent years, the new material industry, which is the focus of my country's development, has been affected by the transfer of production capacity in the global polyurethane industry, and the development momentum of the polyurethane industry has been good, driving the growth of demand for ra...

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Embodiment Construction

[0025] The present invention will now be described in further detail in conjunction with the accompanying drawings and embodiments.

[0026] see figure 1 , a high-efficiency multi-nozzle polyether polyol preparation device and process of the present invention includes a reactor cylinder 1, a prepolymer inlet 2, an alkoxide inlet pipe 3, a reaction liquid spiral mixing inlet pipe 4, and a manhole 5 , Agitator motor 6, safety valve port 7, vacuum outlet 8, nitrogen inlet 9, atomizing nozzle 10, agitator blade 11, material outlet 12.

[0027] The specific structure is as follows:

[0028] Prepolymer inlet 2, alkoxide inlet pipe 3, reaction solution spiral mixing inlet pipe 4, manhole 5, safety valve port 7, vacuum outlet 8, nitrogen inlet 9 are welded to the upper head part of the reactor cylinder 1

[0029] The atomizing nozzle 10 is connected to the lower end of the reaction solution spiral mixing inlet pipe 4, that is, it is arranged inside the reaction cylinder 1;

[0030]...