Distillation column gas phase load What is liquid phase load Please explain

Distillation column. The gas phase load refers to the bottom of the tower, and the liquid phase load refers to the height of the tower. Both are part of the plate tower.

Liquid phase load, also known as liquid load, refers to the volume flow of the liquid that crosses the flow through the tray, overflows through the weir plate, and falls into the downcomer, and is also the internal return flow between the upper and lower trays, which is one of the basic parameters for examining the hydrodynamic state and operational stability of the tray.

The gas phase load refers to the bottom of the tower, and the liquid phase refers to the height of the tower. The diameter of the tower depends on the gas phase load.

Liquid phase load, also known as liquid load, for plate towers with downcomers, refers to the volume flow rate (m3 h or m3 s) of the liquid that flows through the tray, overflows through the weir plate, and falls into the downcomer, and is also the internal return flow between the upper and lower trays, which is one of the basic parameters for investigating the hydrodynamic state and operational stability of the tray. The liquid phase load is too large, and the liquid level difference between the tray weir and the tray weir is formed due to the large resistance, resulting in uneven bubbling and excessive vapor pressure drop, and the liquid flood caused by the downcomer, at this time, the liquid phase load is increased again, that is, the flooding tower is caused, and the tray loses the fractionation effect. The layout of the plate in the column, the length of the liquid flow, the size of the weir plate, the form of the downcomer, the residence time of the liquid in the pipe, the flow rate, the pressure drop and the height of the clear liquid in the column will affect the liquid phase load under stable operation in the column.

The gas phase load refers to the bottom of the tower, and the liquid phase refers to the height of the tower. The diameter of the tower depends on the gas phase load, and it is recommended that the landlord review the chemical knowledge again, and read the chemical principle book at least once.

The gas phase load refers to the bottom of the tower, and the liquid phase refers to the height of the tower. The diameter of the tower depends on the gas phase load.

The liquid phase loading formula of the distillation section is: pm rt,r.

Fine tour transport distillation column.

The gas phase load refers to the bottom of the tower, and the liquid phase load refers to the height of the tower. The liquid phase load is too large, and the liquid level difference between the weirs in and out of the tray is formed due to the large resistance on the tray, resulting in uneven bubbling and excessive vapor pressure drop, and the liquid flood caused in the downcomer, at this time, the liquid phase load is increased again, which causes the flooding tower and the tray to lose fractionation.

Effect. The slab inside the tower.

The layout, the length of the flow, the size of the weir plate, the form of the downcomer, the residence time of the liquid in the pipe, the flow rate, the pressure drop and the height of the clear liquid will all affect the liquid phase load under stable operation in the column.

Separation efficiency. The separation efficiency of the internals is determined by the nature of the separating system, the operating state (pressure, temperature, flow, etc.) and the type and performance of the internals. When the column is operated under vacuum or at a low liquid volume, the packing material separation efficiency is significantly higher than that of the tray.

When the operation of the column is at high pressure or high liquid volume, the tray has a certain advantage, and the separation efficiency is high. In addition, the operation of the distillation section belongs to the control of liquid film resistance, so from the perspective of separation efficiency, it is best to select the tray plate for the potato ridge.

The gas-liquid load is also the gas load and the liquid load.

Gases and liquids can be measured separately by installing ** flow meters at the top of the tower and in the tower kettle.

The gas volume and liquid volume can be measured separately by installing ** flow meters at the top of the tower and in the tower kettle.

Distillation column. The gas phase load refers to the bottom of the tower, and the liquid phase load refers to the height of the tower. Both are part of the plate tower.

Liquid phase load, also known as liquid load, for the plate tower with a downcomer, it refers to the volume flow rate (m3 h or m3 s) of the liquid that crosses through the tray, overflows through the weir plate, and falls into the downcomer, and is also the internal return flow between the upper and lower trays, which is one of the basic parameters for investigating the hydrodynamic state of the tray and the stability of the empty carrying pin.

Distillation is also the use of the difference in the relative volatility of each component to achieve the separation of each fraction (see rectification). However, it is a complex hydrocarbon mixture, the boiling point of various hydrocarbons (and the azeotrope formed by hydrocarbons and hydrocarbons) is almost continuously distributed from low to high, and it is extremely difficult to separate pure compounds by simple distillation methods, and it is generally divided into fractions with different light and heavy fractions according to the boiling point range according to product requirements

There are multiple side line outlets, ** the separation accuracy of each fraction of distillation does not need to be as high as that of pure compound distillation, and multiple side ports (generally 3 or 4) can lead out different fractions of light and heavy at the same time. The concentration section is very short. **The material at the bottom of the distillation column is very heavy, so it is not suitable for heating at the bottom of the column.

However, superheated water vapor is usually introduced at the bottom of the column to evaporate the lighter fraction, and there are generally only 3 4 plates in the concentration section. Mid-section reflux. The average boiling point of each crude fraction varies greatly, resulting in an increase in the negative vapor load and liquid load in the distillation column from bottom to top.

In order to make the load uniform and the heat at high temperature, the middle section of the reflux is used to obtain heat (that is, the liquid is pumped out in the middle of the tower, and then sent back to the tower after heat exchange and cooling). Usually 2 3 mid-section reflux is employed.

The distillation column is designed to separate benzene-toluene mixtures in a continuous distillation column operating at room temperature. After this calculation in the process section, it is obtained that the concentrations of gas-phase liquid grip Li Xun in the distillation column are as follows.

Gas phase concentration v=.

The liquid phase concentration is l=876kg m3.