About superheated steam temperature
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The activated carbon used for exhaust gas treatment in the workshop is adsorbed and analyzed after 24 hours of adsorption (that is, steam is passed through the upper part of the activated carbon to evaporate the solvent, and then condensed and recovered). It turns out that thermometers were installed on the two heads of the horizontal tank (with activated carbon inserted), and the temperature was not found to be too high, generally within 110 degrees. Recently, two more thermometers were installed from the upper part of the horizontal tank, one inserted 50 cm into the activated carbon, and the other measured the upper gas phase temperature. It was found that the thermometer inserted into the activated carbon analyzed the vapor within 110 degrees, but the thermometer measuring the gas phase showed that the temperature reached 170-200 degrees (the thermometer was removed and checked to see if it was broken). The steam we use is generated from thermal power plants, and the pressure is 1 kilogram. consult: Is this steam superheated steam? Can 1 kilogram reach 200 degrees? Can’t understand the superheated steam density meter?
Generally, superheated steam is high-pressure steam, and 1 kilogram should not reach 200°C.
There is no upper limit to the temperature of superheated steam.
Check the table and see that when the density of 1 kilogram of superheated steam is 0.38, the temperature can reach 290 degrees.
Generally, 1 kilogram of steam is 100°C. But it is not clear how high the superheated steam can reach.
The temperature of superheated steam has nothing to do with the pressure. 1 kilogram of pressure can achieve a temperature of 200 degrees. For this temperature, you should ask the thermal power plant how much pressure and temperature it sends. The pressure can be reduced according to the equipment requirements, and the temperature of the superheated steam can remain unchanged.
If saturated steam continues to be heated at isobaric pressure, it becomes superheated steam. The amount of heating is proportional to the temperature increment. There is no upper limit for the amount of heating and there is no upper limit for the temperature increment.
Several possible factors for reference 1. Analysis of activated carbon in tail gas treatment, the flammability and natural temperature of the medium, when the adsorption amount in the activated carbon is high enough and there is oxygen, is there the possibility of spontaneous combustion? 2. The steam coming from the power plant is generally of high quality and has a large degree of superheat. The superheated steam itself is 200°C or even higher. A part of the heat will be absorbed by the activated carbon inside the adsorbent, that is, the temperature inside the adsorbent is not It is simply the steam temperature, but lower than the steam temperature. 3. The steam transportation pipe network generally does not have a very low pressure, such as 1BAR. Is it obtained by reducing the pressure from the pipe network, such as a 10BAR pipe network, so 200°C is not considered high. 4. There is a short circuit in the steam inside the adsorption device. The temperature of the steam in the short circuit part drops less, and when it reaches the gas phase space, it reflects a higher temperature than the internal temperature of the adsorbent. 5. The analysis time is short, the heat of the adsorbent steam is absorbed, and the short-circuit steam basically maintains its original temperature.
Is the gauge pressure 1 kilogram? As long as it exceeds 120℃, it is superheated steam.