Weekly topic: Discuss adding water during the reaction in the polymerization reactor; a reward of 15~~30 wealth points will be given
Thread Content
During the reaction in the polymerization reactor, due to the volume contraction of the vinyl chloride liquid, it is necessary to add some water to maintain the fill factor of the system and reduce its viscosity; this also helps to remove some of the heat generated by the reaction. To get things started, the company adds water during the polymerization process at 30 minutes in, with a pressure of over 1.2 MPa, a water temperature of 28°C, and a flow rate of 4 m3/h; this water addition process lasts for about 4 hours. Could you talk about the injection time, temperature, and flow rate at your company? Let’s have a thorough discussion to see if there are better ways of injecting water
During the reaction in the polymerization reactor, due to the volume contraction of the vinyl chloride liquid, it is necessary to add some water to maintain the fill factor of the system and reduce its viscosity; this also helps to remove some of the heat generated by the reaction.
Water injection requires setting the injection time, as well as the flow rate and total amount of water, based on the different sizes of reactors and the production models. When we carried out the modification of that 30-cubic-meter tank back then, we determined the parameters by referring to those of a 70-cubic-meter tank and making adjustments accordingly.
When talking about water injection, it’s best to also mention the points where the water is injected! There are usually multiple water injection points on the kettle. What kind of equipment is used at each water injection point for injection?
Different kettle shapes result in different water injection methods and different water flow rates. It can be adjusted according to the filling factor and quality criteria.
Our company uses a 100-cubic-meter reactor; after 1 hour of polymerization, water is added at a flow rate of 600 for a period of 4 hours, after which an antifoaming agent is added
Is the defoamer a polyether type, and if so, what is the amount added? Is the flow rate 600 L/h?