How should the internal components of used fiber demisters be disposed of?

It was neutralized to neutrality and then disposed of as industrial waste.

It is said that good fiber mist eliminators have a long service life, and they are rarely replaced or discarded.

The cost to have it repaired at the factory is half of the price of buying a new one. We sent it back to the manufacturer directly for handling

Return it to the manufacturer for professional handling to prevent pollution.

Given the particularities of the operating conditions for such fibers and the differences in policies across various regions, it is recommended that sulfuric acid manufacturers handle them on-site. After removal, it is handed over to local recycling companies qualified to handle hazardous waste for disposal. By directly handing the 316L cage frames to the demister manufacturers for remanufacturing, companies can reduce their operating costs.

In many domestic plants for triacid production or waste acid treatment, due to asymmetries in technical information, traditional fiber-based or wire mesh-based demisters are still being used, and these facilities face difficulties in dealing with the accumulated waste components that need to be replaced periodically. Regarding the demisters in the filler cooling tower and the drying tower of the purification section, as well as those in the first and second absorption towers of the dry absorption section, the use of high-efficiency fan-type gas-liquid demisting and defogging separators to replace traditional electric demisters, especially mesh-type demisters, can improve the efficiency of demisting and separation. It also helps to reduce the size and cost of the equipment, as well as operating costs and pressure drops, thereby making an already good technical solution even better in terms of cost-effectiveness and competitiveness. Currently, demisters both domestically and internationally are increasingly adopting feather-leaf type high-efficiency dynamic gas-liquid demisting and defogging separation internals to replace traditional mesh-type and filter-type demisting internals. The main reason is that traditional screen-type and filter-type demisting internals separate liquid droplets in the gas phase by intercepting them through the pores formed within these internals; the structure of these internals determines the separation mechanism, which in turn affects their operational performance. Firstly, the liquid phase separated by the porous baffle-type demister internals contains a significant amount of salts, which tend to precipitate within traditional baffle-type demister internals and quickly block the flow channels in those internals. This leads to a rapid increase in operating pressure drop, a decline in separation efficiency, and may even force the system to be shut down for maintenance and replacement of the internals. Secondly, once the mesh-type or filter-type demisting internals become clogged by particles and gels in the middle and deeper layers, it is difficult to achieve ideal regeneration at low cost; therefore, the internals must be replaced regularly, resulting in high costs for production shutdowns and maintenance, as well as high labor intensity. Third, the pore sizes of mesh-type and filter-type demister internals follow a Gaussian distribution with very small values; while these small pores are capable of trapping small liquid droplets, larger droplets can pass through the larger pores. As a result, traditional mesh-type and filter-type demisters cannot achieve efficient and precise separation. Fourth, the wire mesh-type demister elements used in sulfuric acid recovery systems have fine metal wires that can easily corrode and break rapidly in dilute acid. This not only leads to a further decline in separation efficiency but also causes the small fragments of the mesh present in the liquid at the bottom of the tower to cause fatal damage to the circulation pump. Furthermore, traditional foam removal separators with screen or filter structures have a low separation efficiency due to their design, which requires a much larger internal flow area to compensate for this, and as a result, the filler tower housing that accompanies them must also be of larger size, increasing the cost of the equipment. The disposal of waste from discarded fiber-type demisters is also a troublesome issue. It should also be noted that the efficient operation of electrostatic mist eliminators requires a strict range of narrow liquid droplet sizes; outside this range, their operational efficiency is poor, and the operating costs and installation expenses are high, resulting in no technical or economic advantages. High-efficiency gas-liquid separators such as the feather-leaf type high-efficiency gas-liquid demisting and defoaming separator, as well as the multi-factor swirl parent-child separator, overcome the serious technical and economic shortcomings of conventional demisters. They offer advantages including the ability for highly efficient and precise separation, high separation efficiency, stable operation, small equipment size, no clogging of internal components resulting in a long service life, and simple operation and maintenance at extremely low costs. For more technical information on it, please visit the direct link http://bbs.hcbbs.com/thread-1354814-1-1.html on this Hainchuan Chemicals forum. For further technical solutions, please contact professional separation technology companies for collaboration.