A device and method for removing arsenic by water flash dry method in smelting flue gas containing arsenic
A flue gas and flash evaporation technology, applied in separation methods, combined devices, chemical instruments and methods, etc., can solve the problems of unreported devices and methods, increasing the trouble of secondary arsenic collection, and increasing sewage treatment load, etc. To achieve the effect of reducing the cost of sewage treatment, improving the economic benefits of enterprises, and no secondary pollution
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Embodiment 1
[0028]The device for removing arsenic by water flashing dry method for smelting arsenic-containing flue gas described in this embodiment includes an electrostatic precipitator 2, a flash tower 3, a pulse bag filter 4, a water pump 5, a valve 6, an atomizer 7, and a heater 8. Unloading rack 10, temperature monitor 11, single-chip microcomputer 12, flow meter 13; the flue gas inlet 1 is set at the lower part of the electrostatic precipitator 2, the electrostatic precipitator 2 includes two electric fields and two insulator chambers, and the upper part of the electrostatic precipitator 2 The insulator chamber of the insulator is provided with a flue gas outlet and is connected to the flash tower 3, and the flash tower 3 is provided with an atomizer 7, and the atomizer 7 is connected to the heater 8, and the heater 8 is connected to the water pump 5, and the water pump 5 is provided with There is a valve 6 and a temperature monitor 11, and the temperature monitor 11 is also respect...
Embodiment 2
[0035] Use the device described in Example 1 to carry out the method for smelting arsenic-containing flue gas water flash dry method to remove arsenic, the flue gas is Nolante oxygen-enriched blast copper smelting flue gas, and the flue gas volume is 55000Nm 3 / h, the flue gas temperature at the outlet of the waste heat boiler is 350°C, the specific steps are as follows:
[0036] (1) The arsenic-containing flue gas from copper smelting of oxygen bottom-blown converter enters the double electric field electrostatic precipitator 4 from the flue gas inlet 1, and the metal Cu, Fe, Zn, Pb, and SiO 2 , CaO, MgO, Al 2 o 3 After the non-metal and metal oxide solids are collected, they are recovered in the unloader at the bottom of the electrostatic precipitator 2, and the flue gas temperature is about 330°C, and enter the flash tower 3;
[0037] (2) After the flue gas in step (1) enters the flash tower 3, the water pump 5 pressurizes the water to 0.35Mpa, pumps it into the heater 8...
Embodiment 3
[0041] The device described in the embodiment includes an electrostatic precipitator 2, a flash tower 3, a pulse bag filter 4, a water pump 5, a valve 6, an atomizer 7, a discharge rack 10, a temperature monitor 11, a single-chip microcomputer 12, and a flow meter 13 The flue gas inlet 1 is arranged on the lower part of the electrostatic precipitator 2, the electric precipitator 2 includes two electric fields and two insulator chambers, the insulator chamber on the upper part of the electrostatic precipitator 2 is provided with a flue gas outlet and is connected with the flash tower 3, and the flash evaporation An atomizer 7 is arranged inside the tower 3, and the atomizer 7 is connected with the water pump 5. The water pump 5 is provided with a valve 6 and a temperature monitor 11. 12 connection, the single chip microcomputer 12 is connected with the flowmeter 13, the flowmeter 13 includes a flow detection unit and a flow control unit, it is a commercially available CMFI type ...
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