A device for producing p-phenylene diisocyanate
By improving the phenyl diisocyanate production equipment, adopting a jacketed heated reactor and a multi-stage separation and recovery system, the environmental protection and cost issues of existing methods have been solved, realizing a safe and environmentally friendly production process and by-product recycling, which is suitable for industrial application.
CN224541692UActive Publication Date: 2026-07-24SHANDONG CHONGSHUN NEW MATERIAL TECH CO LTD
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Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG CHONGSHUN NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-24
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Figure CN224541692U_ABST
Abstract
The utility model relates to the technical field of chemical equipment relates to a p-phenylene diisocyanate production device, including the reaction kettle that is equipped with the heating device and the stirring device of jacket, the feed inlet of reaction kettle is communicated to the p-phenylene diamine jar, dimethyl carbonate storage jar and catalyst storage jar through pipeline, valve and pump respectively, the discharge port of reaction kettle is communicated to centrifuge through pipeline, valve and pump, the liquid material export of centrifuge is communicated to methanol recovery tower, and the solid material export of centrifuge is communicated to washing tower, thin film evaporator, pyrolysis reaction kettle, rectifying column and product storage jar through pipeline, valve and pump in proper order. The utility model production process is simple, and the reaction process is easy to control, and safe and environment-friendly, byproduct can be recycled and reused, and is suitable for industrial production.
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