Polyferric sulfate

One of the four relations in the production of PFS

Relationship between reaction temperature and time

Relationship between reaction temperature, reaction time and pressure in production of PFS

Polyferric sulfate

In practice, it is found that the temperature in the production process goes through three temperature stages. The whole reaction process is also accompanied by the process of temperature change. The three temperature segments are material configuration temperature, early rapid reaction temperature and late stable reaction temperature, and the three temperature segments are in ascending ladder shape. Can effectively adjust and control the temperature, can effectively control the reaction time. The length of reaction time is determined by three aspects: the first is the control of material temperature rise stage, the second is the configuration of equipment and devices, and the third is the operation technology and experience. Production of polyferric sulfate from ferrous sulfate

Relationship between reaction temperature, reaction time and pressure in production of PFS

Relationship between reaction temperature and pressure

Polyferric sulfate

The preparation process of PFS usually includes normal temperature and normal pressure, normal temperature sealing, heating and normal pressure, heating and sealing, heating and pressurizing, etc. now the common methods are normal temperature sealing and heating and sealing. As the reaction process of PFS is exothermic, the reaction heat will gradually increase the temperature of materials in a closed reactor. The rise of material temperature causes the gas expansion in the gas chamber (the expansion coefficient of gas is far greater than that of liquid) to form the pressure in the kettle. If the pressure of the gas chamber in the kettle is too high, the pressure difference with the feeding will be reduced, which will affect the feeding speed in the pipeline and reduce the injection amount of oxidation gas, thus affecting the oxidation speed.

Because the reactor bears a certain pressure, it involves the safety of pressure vessels. Therefore, when controlling the reactor, it is necessary to provide the technical parameters including the pressure to the manufacturer, and require the manufacturer to provide the safety performance supervision and testing certificate of the pressure vessel.