Allyl Polyether Polyol (APP) is an important raw material for the production of chemicals, which is widely used in the fields of polyurethane, coatings, adhesives and so on. This article will introduce the manufacturing method of Allyl Polyether Polyol in detail.
I. Raw material preparation
The main raw materials for manufacturing allyl alcohol polyether polyol include: allyl alcohol, ethylene oxide, catalyst (such as potassium hydroxide), polymerization blocking agent and so on. Ensure that the quality of raw materials is qualified to meet the production requirements.
Second, catalyst preparation
Mix the catalyst (such as potassium hydroxide) with appropriate amount of water to make a certain concentration of catalyst solution. The dosage and concentration of catalyst are adjusted according to the production requirements.
Three, polymerization reaction
1. Add allyl alcohol and catalyst solution in the reactor, and raise the temperature to a certain temperature to make allyl alcohol ring-opening polymerization.
2. Gradually add ethylene oxide, control the charging speed and reaction temperature, so that ethylene oxide and allyl alcohol polymerization reaction.
3. During the reaction process, the viscosity, acid value, hydroxyl value and other indicators of the reaction solution need to be constantly monitored to ensure product quality.
4. Post-treatment
1. When the reaction reaches the predetermined requirements, stop charging, cool down to a certain temperature, add a polymerization blocking agent to terminate the reaction.
2. Neutralize, desalinate and dehydrate the reaction solution to obtain allyl alcohol polyether polyol products.
V. Product quality testing and analysis
1. Carry out quality testing of allyl alcohol polyether polyol products, including viscosity, acid value, hydroxyl value, moisture and other indexes, to ensure that the products meet the relevant standards.
2. Carry out data analysis of the production process, optimize production parameters and improve product quality and yield.
VI. Waste treatment and environmental protection measures
1. Classify and treat the waste generated in the production process, recycle the recyclable waste, and safely treat the non-recyclable waste.
2. Strengthen the environmental protection management of the production site, reduce the pollution of waste gas, waste water and noise in the production process, and ensure that the production process meets the environmental protection requirements.
Summary:
The manufacturing method of allyl alcohol polyether polyol involves a number of links, including raw material preparation, catalyst preparation, polymerization reaction, post-treatment, product quality testing and analysis, and waste treatment and environmental protection measures. In the actual production process, it is necessary to carefully operate and adjust each link according to the specific production conditions and requirements to ensure product quality and production efficiency. At the same time, the safety management and environmental protection management of the production site are strengthened to ensure that the production process meets the requirements of relevant regulations and standards.
