The waste heat regenerative adsorption dryer directly heats the regenerative desiccant by the heat of the high temperature exhaust of the air compressor, cancels the microheat regeneration type electric heater, and has no gas consumption due to heating regeneration (theoretical), to the greatest extent Save energy. In order to ensure the effect of regeneration, and to compensate for the decrease in compressor discharge temperature caused by seasonal changes, the auxiliary heater is usually added. Jiangsu Jiayu JRR series waste heat regeneration air dryer is a new generation dryer designed on the basis of adsorption dryer, which is more efficient and energy efficient.
The waste heat regeneration dry adsorption dryer is a new type of adsorption dryer, which is neither a heat regeneration type nor a heat regeneration type, but belongs to the temperature change adsorption, which is directly heated and regenerated by the heat of the high temperature exhaust of the air compressor. The desiccant completely regenerates the adsorbent. Even if it is used in a low pressure condition of 0.35 MPa, as long as the load ratio of the compressor is not less than 70%, the drying device can work reliably, so that it can fully utilize its own energy and has energy saving effect. . The electric heater of the micro-heat regenerative dryer is eliminated, and the waste heat regenerative adsorption dryer is a new energy-saving compressed air drying device because there is no gas consumption during heating regeneration.
Working principle of waste heat regeneration adsorption dryer
A tower work, B tower residual heat desorption stage
The final stage exhaust gas of the high temperature compressor from 100 °C to 140 °C enters the B tower of the dryer through the V3 valve, and desorbs the residual heat of the adsorbent in the B tower, and enters the cooler through the V9 valve to cool to 40 ° C. The gas enters the gas-liquid separator and separates. The water is discharged through the drain valve. The separated gas enters the A column from the V10 valve, and the gas is further dehydrated and dried under the adsorption of the desiccant. Then, the gas is output through the V6 valve and passed through a dust filter to obtain the product gas.
A tower works, B tower blows cold and dry regeneration stage
After the desorption of the B tower, it enters the blowing and drying regeneration stage. At this time, the process switching valve V1 is opened, and the residual heat regeneration valve V3 is closed, and the gas directly enters the cooler to be cooled to 40 ° C, and then enters the gas-liquid separator, and the separated water is passed through. The drain valve is discharged. The separated gas enters the A tower from the V10 valve and is output through the V6 valve. At the same time, the dry regeneration valve V5 and the regenerative discharge valve V13 are opened, so that ~1% of the gas after drying through the A tower passes through the orifice plate. After depressurization and expansion, it flows through the B tower, and the adsorption bed of the B tower is cooled and further dried and regenerated for use in the second half cycle, and then discharged to the atmosphere through a muffler.
When the cooling of the B tower is completed, the regenerative discharge valve V13 is closed, and the pressure is doubled to the double tower pressure balance by the dry regeneration valve V5 to prevent the peak of dew point and pressure from occurring during switching. At this time, the upper half of the drying device is finished, and the two towers are switched to the lower half cycle.