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Attention points of glass reactor in work: glass reactor is a pressure vessel which is widely used in petroleum, chemical industry, pesticide, medicine, food and other industries, and is used to complete vulcanization, nitrification, hydrogenation, alkylation, polymerization, condensation and other technological processes. With the development of science and technology, the development of glass reaction kettle industry is gradually accelerating, with increasing types and functions and wide application.
Among them, the doublelayer glass reaction kettle can carry out stirring reaction under normal pressure or negative pressure according to the use requirements, and can carry out reflux and distillation of reaction solution, which has the advantages of high temperature measurement accuracy, small error and high working efficiency. Xuyang Chemical said that in the process of working, some places of doublelayer glass reaction kettle are easily overlooked by operators, which need to be paid great attention to. Specifically, there are mainly the following aspects.
First, the choice of medium includes heat preservation medium and temperature control medium. Among them, the interlayer thickness in the middle of the doublelayer glass reaction kettle is small, and the heat preservation performance is poor. Therefore, in the process of using high temperature and low temperature, it is necessary to use thermal insulation materials to protect the kettle body. The kettle body and the pipe for conducting liquid of the reaction kettle need to be wrapped with thermal insulation materials, and pay attention to the thickness of the thermal insulation layer to ensure better thermal insulation effect. In the choice of temperature control media, users can choose different temperature control media according to the required reaction temperature as the heat transmission media of the reaction. When using low temperature or high temperature, pay attention to selecting suitable medium. "The key is viscosity. The medium circulation pump with too high viscosity may not move, and the circulation effect is not good, which can not achieve satisfactory temperature control effect. And rashly replacing the highpower circulating pump is easy to damage the lining of the doublelayer glass reaction kettle, causing the reaction kettle to break. " According to the industry, under normal circumstances, manufacturers will match corresponding heating media for users to choose according to their own products.
Second, the storage location. As a reaction amplification test device, the volume of double-layer glass reaction kettle is usually 50-150L, and the volume can be customized under specific conditions, so the scale of the test should not be underestimated. Because the kettle body is made of glass, stainless steel is a bracket and the legs of the bracket are casters, the storage position should be carefully selected. According to some users' reactions, although the casters of double-layer glass reaction kettle can be fixed by foot buckles, the stability is not strong. Therefore, during storage, pay attention to choose a flat place, lay it flat as far as possible, and keep the mechanical mixing center consistent with the reaction kettle, otherwise it is easy to shake and be unstable, resulting in safety accidents. In addition, the general floor ventilated kitchen cannot be placed, but it must be placed in a well ventilated place.
Third, the double-layer glass reaction kettle is an independent reaction shelf, and the reserved feeding port is small, so the feeding process is difficult. It is suggested in the industry that for solid reagents, it is recommended to prepare a solution and add it into the kettle, while liquid reagents can be pumped into the kettle by matching water pumps or oil pumps. It is worth noting that the reaction materials are added into the reaction kettle through a constant pressure dropping funnel or a common dropping funnel, and corresponding moving ladders are required to facilitate the staff to add the test materials.
In addition, during the feeding process, the one-time feeding amount of the double-layer glass reaction kettle should not be too large, and the appropriate feeding amount can be added after evaluation according to the reaction temperature, reflux and pressure. In addition to the above precautions, users also need to regularly maintain the double-layer glass reaction kettle during normal use to ensure the service life of equipment and reduce the cost of enterprises.