The reporter learned yesterday from the Science and Technology Bureau of Yichun City, Jiangxi Province that Jiangxi Province's key new product plan project undertaken by Jiangxi Hengxingyuan Chemical Co., Ltd.—high thermal stability insoluble sulfur has been identified by experts from Jiangxi Science and Technology Department. Through the research and development of the project, Hengxingyuan Company has developed fully sealed pipeline-type continuous production of insoluble sulfur technology with independent intellectual property rights, and built a 3,000-ton production plant. The 10,000-ton production line is under stand-alone commissioning and is expected to be put into production within the year. Harmonic Meter,Multi Function Harmonic Meter,Digital Multi Function Harmonic Meter New Shangcheng Meter Technology Co., Ltd. , http://www.chinapowermeter.com
According to Cao Keqiang, an engineer from Hengxingyuan Company, the carbon disulfide recovery rate in the new process has increased from 55% to 95%, and the sulfur resource utilization rate has been increased to 99%, which has significantly reduced production costs. Their insoluble sulphur products produced by the new process have a thermal stability of 120 °C for 15 minutes and 60.2%. Their performance is comparable to that of Freys Crystex brand high thermal stability insoluble sulphur products, but the price is only 2/3 of that of U.S. products and can be used as a substitute for imports. product.
Cao Keqiang told reporters that China's production of insoluble sulfur has been using high temperature gasification method. The material must be in a plurality of reactors for a certain period of time to complete the corresponding reaction, which is an intermittent production method. There are problems such as flammable, explosive, easily corroded and polluted in the production process, and the product stability is also poor, which cannot meet the needs of the rubber industry. Nowadays, the widely used domestic multi-reactor technology for producing insoluble sulfur also has the problem that the connecting pipe is easily blocked by sulfur, it is difficult to continuously operate for a long time, and the intermediate product easily runs out of the connection between the reactor and the pipe, resulting in large material loss and production costs. high.
The new process completes a series of reactions in the entire sealed pipeline process. The process steps are sequentially placed in each working section of the fully sealed pipeline. Each working section of the pipeline is equivalent to a reaction vessel, and each working section of the pipeline Provide the appropriate process conditions. In this way, the material starts from entering the fully sealed pipeline system and flows through the pipelines in the working sequence in the system according to the process sequence, completing a series of physical and chemical reactions, and finally obtaining high grade, high thermal stability insoluble sulfur products. The intermediate recycled material and carbon disulfide extractant are then re-entered into the fully sealed piping system to enter the next cycle to achieve fully sealed, ducted continuous production of insoluble sulfur.