. Measures for dealing with problems in the slag water system

Thread Content

⑴Maintain water quality stability and control graywater parameters. Parameters such as pH value, Cl- and Ca2+ concentrations, graywater turbidity, and conductivity influence each other and are interrelated. At high Cl- levels, in high-temperature and high-pressure environments, severe stress corrosion can occur in equipment, especially stainless steel. Low turbidity directly affects the scale inhibition and dispersion efficiency of water systems ； High turbidity increases the adsorption of scale-inhibiting dispersants, leading to increased consumption of these chemicals and prompting the crystallization of scale particles such as calcium carbonate in gray water, thereby raising the deposition rate in pipeline equipment. Generally, controlling parameters such as water quality pH value, Cl- and Ca2+ concentrations, graywater turbidity, and conductivity is achieved by increasing the amount of wastewater discharged from the system and by adding desalinated water to the system in order to adjust the water quality. For turbidity, an appropriate flocculant must be selected; coal types should be analyzed in a timely manner to determine the optimal amount of flocculant. The level of the chemical agent affects the sedimentation effect; at the same time, the amount of filter cake in the filter press should be monitored. When this amount is lower than normal, an excessively long operating time can also impact turbidity. ⑵During startup and shutdown, the black water valve should be kept at a wide open position. ⑶The black water piping should be arranged properly to avoid excessive elbows and pockets. ⑷For pipes prone to wear, use fittings with wear-resistant linings. An additional impact blind plate is added behind the pressure relief valve on the impact blind plate to improve wear resistance. During maintenance, these areas should be inspected, a record kept, and the wear rate monitored.