一种应用于水性羟丙二级分散体生产的混合反应装置
By adopting a multi-layer flat blade and horizontal heat exchange unit design in the production of aqueous hydroxypropyl secondary dispersion, the problems of explosive polymerization and cross-linking caused by uneven heat distribution were solved, thereby improving the stability and efficiency of the reaction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU BOGAO SYNTHETIC MATERIAL CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing production process of aqueous hydroxypropyl secondary dispersions, the uneven heat generated by the free radical polymerization reaction leads to a sudden rise in local temperature, which may trigger explosive polymerization and cross-linking side reactions. Existing cooling methods cannot effectively solve this problem.
The design employs a combination of multi-layered flat blades and horizontal heat exchange units, which directly exchange heat with the liquid inside the vessel, promptly removing localized heat and providing additional heat to ensure temperature uniformity.
This improves reaction efficiency, avoids explosive polymerization and cross-linking side reactions, and ensures the stability and uniformity of the reaction.
Smart Images
Figure CN224507069U_ABST
Abstract
Claims
1. A mixing reaction device applied to the production of aqueous hydroxypropyl secondary dispersion, used for solution polymerization in the production of aqueous hydroxypropyl secondary dispersion, comprising a kettle body (1), a stirring device and a heat exchange device, a discharge pipe (6) is connected at the bottom of the kettle body (1), a feeding port (7) is arranged at the top of the kettle body (1), the stirring device comprises a driving motor (3) and a stirring shaft (4), characterized in that, The stirring device further comprises at least two layers of flat paddles (5) installed on the stirring shaft (4), and the heat exchange device comprises a heat exchange fluid upward flowing pipe (8), a plurality of horizontal heat exchange units (12) and a heat exchange fluid downward flowing pipe (9), each horizontal heat exchange unit (12) is connected to the heat exchange fluid upward flowing pipe (8) at one end and connected to the heat exchange fluid downward flowing pipe (9) at the other end, the upper end of the heat exchange fluid upward flowing pipe (8) is connected to a heat exchange fluid drain pipe (15), and the upper end of the heat exchange fluid downward flowing pipe (9) is connected to a heat exchange fluid inlet pipe (16).
2. The mixing reactor for use in the production of aqueous hydroxypropyl secondary dispersions according to claim 1, characterized in that The flat paddles (5) have four layers.
3. The mixing reactor for use in the production of aqueous hydroxypropyl secondary dispersions according to claim 1, characterized in that, Each layer of flat paddles (5) is distributed with a horizontal heat exchange unit (12) above.
4. The mixing reactor for use in the production of aqueous hydroxypropyl secondary dispersions according to claim 1, characterized in that, Each horizontal heat exchange unit (12) comprises a water inlet connecting pipe (14), a water inlet distribution pipe (17), a plurality of parallel pipes (18), a water outlet collecting pipe (19) and a water outlet connecting pipe (20), each parallel pipe (18) is connected to the water inlet distribution pipe (17) at one end and connected to the water outlet collecting pipe (19) at the other end, the water inlet connecting pipe (14) is connected to the water inlet distribution pipe (17) at one end and connected to the heat exchange fluid inlet pipe (16) at the other end, the water outlet connecting pipe (20) is connected to the water outlet collecting pipe (19) at one end and connected to the heat exchange fluid drain pipe (15) at the other end.
5. The mixing reactor for use in the production of aqueous hydroxypropyl secondary dispersions according to claim 4, characterized in that The water inlet distribution pipe (17) and the water outlet collecting pipe (19) are arc-shaped and match the shape of the kettle body (1).
6. The mixing reactor for use in the production of aqueous hydroxypropyl secondary dispersions according to claim 1, characterized in that, A sampling pipe (13) is connected to the discharge pipe (6), and a sampling manual valve is installed on the sampling pipe (13).
7. The mixing reactor for use in the production of aqueous hydroxypropyl secondary dispersions according to claim 1, characterized in that, The kettle body (1) is further provided with a single drop pipe (10) and a pre-emulsion drop pipe (2) at the top.
8. The mixing reactor for use in the production of aqueous hydroxypropyl secondary dispersions according to claim 1, characterized in that, The kettle body (1) is respectively provided with an in-kettle medium temperature sensor (22), an in-kettle medium density sensor (23) and an in-kettle medium pH sensor (21).
9. The mixing reactor for use in the production of aqueous hydroxypropyl secondary dispersions according to claim 8, characterized in that The kettle body (1) is further provided with a neutralization drop pipe (11) at the top.