Method for removing mercury from mercury pollution materials
A mercury pollution and removal technology, applied to the removal of solid waste, etc., to achieve the effect of reducing mercury content
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example 1
[0045] Assembled as figure 1 Schematic representation of equipment to process a quantity of coal combustion fly ash known to contain mercury. A microwave frequency of 915MHz is used. The fluidizing gas is ambient air.
[0046] The feed fly ash is processed at a temperature of about 820°C. The material passed through the reactor vessel at a rate of approximately 6 pounds per minute (lbs) throughout the approximately 400 minute duration of the test.
[0047] The mercury content in the feed was measured to be 79 parts per billion (ppb). The unburned carbon content, characterized by LOI (loss on ignition), was measured to be 8.5%.
[0048] Treated ash samples were periodically taken from the experiment and measured for mercury content. The results obtained are shown in Table 1 below. The LOI of the treated material was 1.5%.
[0049] time
[0050] As can be seen from the table, once the process has reached steady state operation with respect to mercury precipitat...
example 2
[0052] Assembled as figure 1 Schematic representation of equipment to process a quantity of coal combustion fly ash known to contain mercury. A microwave frequency of 915MHz is used. The fluidizing gas is ambient air.
[0053] The feed fly ash is processed at a temperature of about 820°C. The material passed through the reactor vessel at a rate of approximately 6 pounds per minute (lbs) throughout the approximately 500 minute duration of the test.
[0054] The mercury content in the feed was measured to be 33 parts per billion (ppb). The unburned carbon content, characterized by LOI (loss on ignition), was measured to be 17.5%.
[0055] Treated ash samples were periodically taken from the experiment and measured for mercury content. The results obtained are shown in Table 2 below. The LOI of the treated material was 0.4%.
[0056] time (min
example 3
[0058] Assembled as figure 1 Schematic representation of equipment to process a quantity of coal combustion fly ash known to contain mercury. A microwave frequency of 915MHz is used. The fluidizing gas is ambient air.
[0059] The feed fly ash is processed at a temperature of about 820°C. The material passed through the reactor vessel at a rate of approximately 6 pounds per minute (lbs) throughout the approximately 400 minute duration of the test.
[0060] The mercury content in the feed was measured to be 142 parts per billion (ppb). The unburned carbon content, characterized by LOI (loss on ignition), was measured to be 4.5%.
[0061] Treated ash samples were periodically taken from the experiment and measured for mercury content. The results obtained are shown in Table 3 below. The final LOI was 0.3%.
[0062] time
(minute)
product mercury
(ppb)
cyclone mercury
(ppb)
0
142
142
187
8
7
...
PUM
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