What Is Honeycomb Ceramic Packing ?

KSOURCEEP Brand Honeycomb Ceramic Packing .

Chemical fillers are widely used in many industry, excellent acid and heat resistant performance, except hydrofluoric acid of various inorganic acid, organic acid and organic solvent corrosion, can be in all kinds of high, low occasions to use, is the basic building blocks of gas-liquid contact packing tower and the pros and cons of its performance is the main factor to packed tower operation performance.

Classification by material:

Ceramic packing. Ceramic packing has good corrosion resistance and heat resistance, generally can be resistant to hydrofluoric acid and other kinds of inorganic acids and organic acids. Ceramic packing is fragile, not suitable for high impact strength, but has good wettability.

(2) metal filler. Metal filler can be made of a variety of materials, carbon steel filler cost is low, and has a good surface wettability, can be applied to no corrosion or low corrosion system; Stainless steel packing has high corrosion resistance but high cost. Metal filler impact resistance, can be used in high temperature, high pressure, high strength applications, mainly to metal filler in industry.

(3) plastic packing. Plastic packing materials including polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), etc., it has good corrosion resistance, resistant to inorganic acid, alkali and organic solvent, etc., but with cold brittleness, unfavorable at 0 ℃ to use, but the surface wettability is a bit poor.

By type of loading:

A, bulk packing is A certain geometric shape and size of the particle body, generally in A random way stacked in the tower, also known as random packing or particle packing, mainly including: (2) pall ring packing; (3) ladder ring packing; (4) saddle stuffing; (5) saddle packing; 6 ring saddle packing.

B. Structured packing is the packing arranged according to a certain set figure, steam pile. Structured packing a lot of types, according to its geometric structure can be divided into grid packing, corrugated packing, pulse packing, etc., the current industry commonly used structured packing for corrugated packing, its basic types have screen shape and hole plate shape two categories, can be used in ceramics, plastics, metals and other materials manufacturing. In processing, there are 300 and 450 inclinations of the corrugated and tower shaft, the inclinations of 300 are denoted by code BX (or X), and the inclinations of 450 are denoted by code CY (or Y).

Corrugated wire mesh packing is the main form of corrugated wire mesh packing, is made of wire mesh. It is characterized by low pressure and high separation efficiency, especially suitable for precision distillation and vacuum distillation equipment, and provides an effective means for distillation of difficult separation and heat sensitive materials.

Metal screen corrugated packing is the main form of corrugated packing. There are many small holes with a diameter of 4-16 mm on the corrugated plate of the packing, which can distribute the liquid on the plate and strengthen the function of horizontal mixing. Metal orifice corrugated packing has high strength and strong corrosion resistance, especially suitable for large diameter tower and heavy gas-liquid load.

In general, structured fillers achieve the minimum pressure drop per theoretical level, making them ideal for requiring minimal energy consumption and requiring many theoretical levels of separation. In addition, they can minimize the bottom temperature of the tower. Although the investment in structured packing is generally higher than that in bulk packing, an economic examination of the separation process has found that energy consumption is often the determining factor in the total cost, and that in many cases it is preferred to use structured packing rather than bulk packing.

How to choose the type of filler?

The choice of fillers to consider the requirements of the separation process, usually consider several aspects.

Mass transfer efficiency

Mass transfer efficiency is the separation efficiency, which can be expressed by two methods: one is the theoretical calculation method, which is expressed by the height of each theoretical equivalent packing layer, that is, HETP value; The other is the mass transfer efficiency calculation method, which is expressed by the height of the packing layer corresponding to the height of each mass transfer unit, namely the HTU value. On the premise of meeting the process requirements, the filler with high mass transfer efficiency and low HETP value should be selected.

(2) filling of the flooding point gas velocity

Under the same liquid load, the higher the flooding point gas velocity of the filler or the greater the gas phase kinetic energy factor, the greater the flux and the greater the processing capacity of the tower. Therefore, fillers with high flooding point gas velocity or gas phase kinetic energy factor should be selected in the selection of fillers on the premise of ensuring high mass transfer efficiency.

(3) packing layer pressure drop

The pressure drop of the packing layer is the main application performance of the packing. The lower the pressure drop of the packing layer, the lower the power consumption and the lower the operation cost. The selection of low pressure drop fillers is particularly important for the separation of heat sensitive materials.

(4) the operation of the packing performance

The operating performance of filler mainly refers to the operating elasticity, anti - fouling resistance and anti - heat sensitivity. The chosen packing should have greater flexibility to maintain stable operation when the gas-liquid load fluctuates in the tower. At the same time, it should also have the ability of anti-fouling resistance and anti-thermal sensitivity to adapt to the change of material and temperature in the tower.

(5) packing layer segmentation

When the height of the total packing layer is determined, whether the packing layer needs to be segmented should be considered. The purpose of segmentation is to ensure uniform distribution in the packing layer and provide space and opportunity for transverse mixing of rising gas, so as to reduce amplification effect and improve mass transfer efficiency.