There are many types of compressed air adsorption dryers. According to different working methods, there are heat suction dryers, micro heat suction dryers, waste heat and micro air consumption suction dryers, zero air consumption suction dryers, etc., different working methods Determined different operating energy costs, we take an oil-free centrifugal air compressor with a displacement of 200m3/min as an example to make a detailed operating cost comparison.

The energy consumption of the heatless regenerative dryer is all the finished compressed air, accounting for about 15% of the treated air volume; (1100KW × 15%) × 24h × 365 days × 1.0 yuan = 1,445,400 yuan / year, annual operating cost: 144.54 (ten thousand yuan) / year;

Micro-heat regeneration dryer single tower cycle 4h, regeneration gas volume 8%, heating power 70KW, heating time 1.5h, cooling time 2.0h, (1100KW×8%×3.5h+70KW×1.5h×75%)×6 times ×365 days = 846,982 yuan/year, annual operating cost: 84.69 (ten thousand yuan)/year;

The single-tower cycle of the waste heat regeneration micro-air consumption dryer is 4h, the regeneration air consumption is only 1%, the regeneration air time (cooling) is 2.0h, the heating power is 110KW, the heating time is 1.5h, the blower power is 18KW, and the startup time is 1.6h (1100KW× 5%×1.5h+110KW×1.5h×75%+18KW×1.6h)×6 times×365 days=514,759 yuan/year, annual operating cost: 51.47 (10,000 yuan)/year;

The zero air consumption blast heat regeneration dryer has an adsorption cycle of 4h, a regeneration gas volume of 0%, a heating time of 1.5h, a heating power of 110KW, a cooling time of 2.0h, and a blower power of 18KW. The startup time is 3.5h. (110KW×1.5h×75%+18KW×3.5h)×6 times×365 days=408,982 yuan/year, annual operating cost: 40.89 (10,000 yuan)/year;

Through data analysis, it can be known that if the heatless regenerative dryer is used as the benchmark, the zero-air consumption blast heat regenerative dryer can save more than 70% of energy. Such significant energy-saving benefits are worthy of our vigorous promotion! Long-term use of zero air consumption dryer, users can obtain significant economic benefits brought by energy saving to a greater extent, and truly obtain significant energy saving and emission reduction benefits for the society. However, it is worth noting that although the initial investment cost of zero air consumption is high, the energy consumption calculation enterprise can recover the cost after half a year of investment. From a long-term point of view, the zero air consumption suction dryer can be said to be an excellent enterprise in terms of energy saving. investment.

FROM:JIAYU