Metal wire mesh corrugated packing BX500 CY700 wire mesh corrugated packing, customized by various material manufacturers

Description :

　　BX500/CY700 wire mesh ripple/1000 wire mesh ripple. In recent years, most manufacturers have chosen stainless steel wire mesh ripple for their distillation towers. Stainless steel wire mesh ripple has the advantages of compact structure, low resistance, high mass transfer efficiency, large processing capacity, and large specific surface area; The wire diameter of stainless steel wire mesh ripple is divided into 12 wire, 15 wire, 18 wire, 24 wire, etc., and the larger the wire diameter, the more expensive the price.

　　1. Product Introduction:

　　The wire mesh corrugated packing is assembled from stainless steel wire mesh corrugated sheets The packing material forms a uniform geometric arrangement inside the tower, defining the gas-liquid flow path and improving the phenomena of channel flow and wall flow Due to the unique capillary action of the wire mesh and the more effective wetting performance of the surface area, it has low pressure drop and less liquid holding capacity, thus having high separation efficiency. Especially suitable for difficult to separate and thermosensitive systems. Widely used in various fields such as petrochemicals (such as catalytic cracking and distillation sections in refineries), fertilizers, natural gas, biochemistry, environmental engineering, etc. The diameter of the tower equipment reaches 6 meters, and its separation performance is higher than that of corrugated packing with metal orifice plates. Suitable for operating temperature of 400 ℃, with no temperature limit for low-temperature operation The appearance and material of the 700 type metal wire mesh corrugated packing are the same as those of the 500 type packing, with the difference being the reduction in the peak height of the packing corrugation and the increase in the inclination angle of the fluid pathway on the tower axis.

　　2. Main features of the product:

　　1) The steam load and flooding limit are similar to those of 500 type packing, and the flooding point is not obvious, so the point where the liquid volume begins to affect the pressure drop is often referred to as the flooding limit. There is still some efficiency when the steam load exceeds the liquid flooding limit, but the resistance is high, and the separation ability of the inlet packing is lower than the value, so the practical significance is not significant. Generally, the economic operating point (the operating point of the separation ability at the working load) is taken as 75% of the liquid flooding limit;

　　2) Liquid load: Due to the strong capillary action of metal wires, liquid load is almost non-existent, but when the liquid load is less than 0.2 t/(m2 · h), it is difficult to form a uniform liquid film on the surface of the filler. In vacuum distillation, if the liquid load is less than 10t/(m2. h), it generally does not affect the packing performance, and it is generally considered that the liquid load is 12t/(m2. h);

　　3) Pressure drop: Under normal working load, the pressure drop per meter of 700 type metal wire mesh corrugated packing is 667Pa (5mmHg), which is equivalent to 66.7 Pa (0.5mmHg) per theoretical plate. This is not only much lower than the tray, but also smaller compared to general packing materials such as 50mm ball rings. In addition, the pressure drop increases along a smooth curve with the increase of steam load, and even if there is flooding, it does not increase sharply, indicating that its fluid dynamics performance is relatively stable.

　　4) Liquid holding capacity: The liquid film on the surface of the product is only 0.08mm. Although its specific surface area is large, its liquid holding capacity is very small. Its working load liquid holding capacity is only 6% of the packing volume, and the liquid flooding load liquid holding capacity is 8% of the packing volume.

　　5) Mass transfer performance: The 700 type wire mesh packing has high separation efficiency, and for general organic media, the operating pressure is 2.37-40Kpa

　　Within the range of 20-300mmHg, under working load conditions, there are up to 10 theoretical trays per meter of packing. Even above the liquid flooding limit, there is still a certain separation efficiency. When the steam load decreases or the operating pressure decreases, the packing efficiency actually increases, fully reflecting the good wetting performance of the 700 type packing. Due to the low surface tension of most organic media and their tendency to wet the surface of fillers, the efficiency is essentially independent of the medium within the molecular weight range of 100-200.

　　3. Main application scope and occasions of the product:

　　CY700 metal wire mesh corrugated packing has a large specific surface area and high efficiency, and is generally used for isotope separation or distillation of difficult to separate systems that require a large number of theoretical plates. These system separations often require hundreds of theoretical plates and are commonly used in situations where highly restricted or high-purity products are required, such as nitro isomers (para, ortho, meta), dipentene isomers, tetrafluoroethylene monomers, reagent alcohols, fatty alcohols, high-purity oxygen, etc HF、 Methanol, narrow distillate ink solvent oil, ethyl propyl pyridine, isotopes, turpentine, C3-C10a ene mixtures and secondary alcohols, trimethylacetoacetate ethyl ester, isobutanol, light wax oil and heavy wax oil (single carbon alkane separation), ethylene oxide, C5-C9 synthetic fatty acids, isooctane, nitrochlorobenzene isomers, methylchlorosilane, carbon tetrachloride, hexamethylenediamine, tert butyl meta cresol methyl ether, vanillin, sandalwood and many other petrochemical, fragrance, pharmaceutical, dye products. At present, the scope of use of this product is constantly expanding.

　　4. BX500/CY700 wire mesh corrugated packing wire diameter mesh size

　　Wire mesh corrugated packing is a disc-shaped regular packing composed of vertically arranged corrugated wire mesh strips. Its specific surface area has a decisive impact on mass transfer performance. Depending on the specific surface area, wire mesh corrugated packing can be divided into 250m2/mi350m2/m3, 500m2/m3, 700m2/m3 types, etc. Due to the fine mesh, its porosity is relatively high, resulting in a decrease in filler lamination; Due to the unique capillary action of the wire mesh, the liquid is easily distributed in a film like manner on the surface of the filler, and the liquid film is thin with a small liquid holding capacity, thus having outstanding wetting performance and high separation efficiency. The shortcomings are high cost, avoidance of blockage, and fear of corrosion. Metal wire mesh corrugated packing is commonly used in unit operations such as vacuum distillation, atmospheric distillation, and absorption; Plastic mesh corrugated packing is suitable for general absorption processes below 80 ℃.

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