Treatment method for surface fouling of vanadium production equipment
A technology of production equipment and treatment method, which is applied in the field of metallurgy, can solve the problems of low scaling treatment efficiency and unsatisfactory treatment effect on the surface of vanadium production equipment, and achieve the effects of protecting the environment, increasing the yield of vanadium, and reducing production costs
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Embodiment 1
[0042] Measure the fouling layer thickness 200mm of vanadium transport pipe with vernier caliper; According to the amount of scale remover of formula: (thickness of scale layer*equipment internal surface area)=250kg / m Calculating the amount of scale remover 2000kg; Preparation NaOH mass concentration is 51% Descaling agent 8000L; inject the prepared descaling agent into the vanadium precipitation equipment, heat it to 70°C, and keep it warm for 10 hours; discharge and recycle the descaling sewage in the vanadium precipitation equipment; clean the inner wall of the equipment with clean water, and test the pH of the cleaning water to 7.1 , Stop cleaning when the turbidity is 200-300; part of the cleaning water is recovered for the preparation of descaling agent, and the cleaning effect is shown in Table 1.
Embodiment 2
[0044] Use a vernier caliper to measure the scale thickness of the vanadium-precipitating heat exchange equipment to 100mm; according to the formula descaling agent dosage: (scaling layer thickness * equipment inner surface area) = 200kg / m3 calculate the descaling agent consumption 800kg; prepare KOH mass concentration as 42% 4000L descaling agent; inject the prepared descaling agent into the vanadium precipitation equipment, heat it to 100°C, and keep it warm for 20 hours; discharge and recycle the descaling sewage in the vanadium precipitation equipment; clean the inner wall of the equipment with clean water, and test the pH of the cleaning water 7.0, stop cleaning when the turbidity is 200-300; part of the cleaning water is recovered for the preparation of descaling agent, and the cleaning effect is shown in Table 1.
Embodiment 3
[0046] Measure the fouling layer thickness 150mm of vanadium precipitation reaction tank with vernier caliper; According to the amount of formula descaling agent: (thickness of fouling layer*equipment internal surface area)=230kg / m Calculate the amount of descaling agent 1400kg; Prepare Na 2 CO 3 6000L of descaling agent with a mass concentration of 42%; inject the prepared descaling agent into the vanadium precipitation equipment, heat it to 85°C, and keep it warm for 15 hours; discharge and recycle the descaling sewage in the vanadium precipitation equipment; wash the inner wall of the equipment with clean water, Check the pH of the cleaning water to be 7.0, and stop cleaning when the turbidity is 200-300; part of the cleaning water is recovered for the preparation of descaling agent, and the cleaning effect is shown in Table 1.
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