Many industrial process gases have high particulate loading. Measuring process parameters (ie. humidity, particulate size, oxygen content) can be very challenging. The key issues are maintenance and blinding of the sensor. For a humidity sensor to be useful, the maintenance must be low or the plant will not be able to use for control. Blinding causes the sensor to not respond to process changes which provides inaccurate values. Overcoming these obstacles is crucial in all high... Read More
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An accurate, reliable humidity measurement has always been an issue for high temperature, high particulate, corrosive and condensing environments. Most OEM (dryer, boiler, kiln, HRSG…) manufacturers do not include humidity sensors as part of the control package because of the increased cost to the customer. Another reason is that there are a lot of humidity sensor technologies that will not work in those environments and the OEMS do not want to expose themselves to the liability of... Read More
H2O / Wet Bulb Sensor Rental Program for Smokehouse & Oven Applications
The H2O sensor provides real time absolute humidity in the exhaust of any dryer, oven or kiln. Particulates, organics, liquid smoke, natural smoke and condensing compounds have no effect on our sensor. The sensor is a direct measurement of the water molecule and is very repeatable so that the plant can dial into the same number every time with confidence. The accuracy of our sensor at 90C is 0.1% RH. Our sensor also... Read More
Combustion boilers utilizing fuels with varying moisture can see varying steam loads based on the fuel variability. The more information the plant knows about the fuel moisture, the better the plant can plan accordingly to provide a more stable steam load. Since waste to energy fuels have varying components, it is very hard to measure the fuel moisture on a real time basis prior to entering the furnace. The same can be seen in biomass boiler applications.
Another option to direct fuel... Read More
Knowing the water concentration at the HRSG outlet in combined cycle power plants can benefit the plant in 3 areas. The areas are corrosion protection during outages, tube leak detection and improved feed water temperature control.
Many plants during outages need to eliminate water condensation so the tubes within the HRSG are not exposed to corrosion. Some plants insert balloons to eliminate humid, ambient air entering the HRSG during outages. Another option is to monitor the dew point... Read More
The capacity of a spray dryer is the amount of water evaporated within the dryer.
The evaporation is directly correlated with the temperature drop across the dryer. The greater the difference between the inlet temperature and the outlet temperature, the more water is evaporated. In order to optimize the capacity, the inlet temperature of the dryer should be as high as possible (within the constraints of the product being dried) and held constant. This also improves the energy efficiency of... Read More