Which can cause foaming and fouling of boiler feed water?

Foaming and priming is caused when the boiler water does not have the correct amount of chemicals and there are suspended solids in the water which carry over in the dry pipe.

Which of the following material is used in prevention of foaming in boiler?

This can be prevented by using sodium phosphate instead of sodium carbonate as softening reagents. Explanation: Foaming is caused by the formation of oils and alkalis. Oils and Alkalis becomes sticky and greasy on the surface and hence results in foaming.

How do I stop my boiler from foaming?

The degree of priming also depends on the design of the boiler and its steaming rate. The most common measure to prevent foaming and priming is to maintain the concentration of solids in the boiler water at reasonably low levels. Avoiding high water levels, excessive boiler loads, and sudden load changes also helps.

How do I lower the conductivity in my boiler water?

Internal Boiler Water Treatments The main internal treatment solutions that you might want to consider include softening chemicals, anti-scaling agents, oxygen scavengers, sequestering agents, and anti-foaming agents, all of which can help with the reduction of conductivity.

What causes foaming?

Foaming or frothing at the mouth occurs when excess saliva pools in the mouth or lungs and is mixed with air, creating foam.

Why is a boiler blowdown necessary?

The primary purpose of blowdown is to maintain the solids content of boiler water within certain limits. This may be required for specific reasons, such as contamination of the boiler water. In this case, a high blowdown rate is required to eliminate the contaminants as rapidly as possible.

Which dissolved gas in water can cause boiler corrosion?

oxygen
Dissolved gases, such as oxygen and carbon dioxide, which can cause corrosion.

Why is boiler conductivity high?

A key issue with high conductivity in boiler water is that operational issues such as scaling can occur, which is a buildup of solid material in the boiler. When this occurs, the boiler becomes less efficient and increases the fuel consumption of the unit.

What causes high water conductivity?

Conductivity is a measure of the ability of water to pass an electrical current. Because dissolved salts and other inorganic chemicals conduct electrical current, conductivity increases as salinity increases.

What is the effect of foaming in boiler?

Foaming has a negative impact on industrial operations. For example, boiler water carryover is the contamination of the steam with boiler-water solids. Bubbles or froth actually build up on the surface of the boiler water and pass out with the steam. This foaming is caused by high concentration of any solid in the boiler water.

What is foaming in boiler steam drum?

Foaming in a boiler steam drum is when steam bubbles accumulate from generated steam rising through the boiler water. If left uncontrolled, the foam can leave the steam drum and form deposits in the boiler’s superheater tubes, leading to tube failure.

What is the best way to remove foam from a boiler?

The use of chemical anti-foaming and anti-priming agents, mixtures of surface-active agents that modify the surface tension of a liquid, remove foam and prevent the carry-over of fine water particles in the stream, can be very effective in preventing carry-over due to high concentrations of impurities in the boiler-water.

What is froaming and how does it affect industrial operations?

Foaming has a negative impact on industrial operations. For example, boiler water carryover is the contamination of the steam with boiler-water solids. Bubbles or froth actually build up on the surface of the boiler water and pass out with the steam.