... raw material gas≤3500PPmv9. Equipment overall pressure drop ≤0.03MPa10.Adsorbent Molecular sieve11.Regenerative method Built-in electric furnace, ... -loop recycling technology, built-in electric furnace, gas through the heater, flow of gas is slow, heating time is long ... , good effect of insulation, beautiful looking. 10. Electric heating elements are using stainless steel material, thermal conductivity ...