Gas monitoring and purifying method
A gas monitoring and gas technology, applied in chemical instruments and methods, combustion methods, separation methods, etc., can solve the problem of non-standard monitoring of monitors, and achieve the effect of improving the efficiency of adsorption and purification
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Embodiment 1
[0037] S1, gas discrimination
[0038] Place the gas detection equipment in the environment to be tested, drive the fan 7 to rotate at 300r / min by the driver 6 to quickly suck the gas to be tested into the intake chamber 10, and filter the particles and dust sucked in with the gas through the filter 8. The heating wire 9 heats the moist air sucked in with the gas for drying treatment, and the dried dry gas is brought into the detection tube 12 through the fan 7, and the detection gas in the detection tube 12 detects and discriminates the gas.
[0039] S2, gas treatment after screening
[0040] When the gas is detected by the monitor 13 as a harmful gas, the activated carbon in the gas treatment tank 15 is adsorbed for treatment. When the gas is detected as an ordinary harmless gas, the gas treatment tank 15 cannot be treated by The gas pump 17 accelerates and quickly discharges it out of the equipment. When it is detected that the gas is flammable, it will be processed by the gas pr...
Embodiment 2
[0042] S1, gas discrimination
[0043] The gas detection equipment is placed in the environment to be tested, the driving machine 6 drives the fan 7 to rotate at 500r / min to quickly suck the gas to be tested into the inlet chamber 10, and the particles and dust sucked in with the gas are filtered through the filter 8. The heating wire 9 heats the moist air sucked in with the gas for drying treatment, and the dried dry gas is brought into the detection tube 12 through the fan 7, and the detection gas in the detection tube 12 detects and discriminates the gas.
[0044] S2, gas treatment after screening
[0045] When the gas is detected by the monitor 13 as a harmful gas, the activated carbon in the gas treatment tank 15 is adsorbed for treatment. When the gas is detected as an ordinary harmless gas, the gas treatment tank 15 cannot be treated by The gas pump 17 accelerates and quickly discharges it out of the equipment. When it is detected that the gas is flammable, it will be process...
Embodiment 3
[0048] The activated carbon used in the gas monitoring and purification methods in Example 1 and Example 2 is modified activated carbon, and the preparation process is as follows:
[0049] Step 1 After the activated carbon is ultrasonically washed in absolute ethanol, washed with deionized water, and dried in a muffle furnace to obtain pretreated activated carbon;
[0050] Step 2 Take 15g of pretreated activated carbon and put it in 200mL 9mol·L -1 H 2 SO 4 Soak in a water bath, shake in a shaker, filter, rinse with deionized water to neutrality in the modification solution, dry and seal for later use to obtain a spare activated carbon;
[0051] Step 3 Take 200mL 10wt% NH 3 ·H 2 Put the O solution in an Erlenmeyer flask, add 15g spare activated carbon to the above solution, soak in a water bath, shake in a shaker, and filter. Wash with deionized water to neutrality, dry and seal to obtain modified activated carbon.
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