2results about How to "Efficient and thorough removal" patented technology

This utility model discloses a staged purification device for electrolytic hydrogen production, including a purification tank. The purification tank contains a first cylinder and a second cylinder. Several dehydration units are arranged sequentially from bottom to top within the internal region of the first cylinder. A catalytic deoxygenation unit is arranged between two adjacent dehydration units in the region between the first and second cylinders. A heating device is arranged in the region between the second cylinder and the purification tank. An air inlet is located at the bottom of the purification tank. Several first connecting ports and several second connecting ports are provided on the wall of the first cylinder. The first connecting ports connect the catalytic deoxygenation unit to the dehydration unit below it, and the second connecting ports connect the catalytic deoxygenation unit to the dehydration unit above it. A dual-outlet air pipe is located at the top of the purification tank. This utility model can perform multi-stage continuous deoxygenation and dehydration treatment on hydrogen, effectively removing oxygen and water vapor mixed in with the hydrogen, thereby ensuring the purity of the final output hydrogen.

This invention discloses a method for removing metallic impurities from recycled tungsten alloys through arc refining and synergistic additive processes, belonging to the field of recycled tungsten alloy purification technology. The method includes: a first step, pretreatment; a second step, arc refining and synergistic additive impurity removal; a third step, cooling and forming; and a fourth step, post-treatment. This invention achieves highly efficient and thorough impurity removal, effectively removing various metallic impurities such as Fe, Cu, Al, Si, Mo, As, Pb, and Bi from recycled tungsten alloys. The finished product has a low total metallic impurity content and high purity, meeting the purity requirements of high-end applications for high-purity tungsten alloys.