What is the appropriate timing and method for adding a deoxidant to the boiler?

A boiler is a conventional thermal equipment used to heat water or generate steam. During the operation, due to the contact between oxygen and metal, the metal may corrode in water. In order to reduce metal corrosion in boilers, improve boiler efficiency and lifespan, it is necessary to addoxygen scavenger.

Deoxidizer is a chemical substance used to remove dissolved oxygen from water, react with oxygen to form insoluble compounds or gases, thereby reducing the concentration of dissolved oxygen in water. Deoxidized substances mainly include sodium sulfite, sodium sulfite, regenerated iron, regenerated nickel, etc

Traditionally, deoxidizers are added to the water circulation system under boiler heating and pressure. Time and method of joining:

connection time

Deoxidizer is usually added before the boiler is put into use, that is, after the boiler is installed. This ensures that the deoxidizer is completely dispersed in the circulating water before start-up, allowing it to deoxidize during operation. The start-up time usually starts a few days before the boiler is put into operation.

connection method

(1) Pre assembly: Deoxidizers are usually manufactured in boiler factories or professional companies, and are added to a certain proportion of circulating water according to specific situations and requirements. usuallyoxygen scavengerMix with a certain amount of water and then add circulating water.

(2) Injection system: Deoxidizer is usually added to boiler circulating water through a special injection system. Jet systems typically consist of pumps, pipelines, valves, and measuring instruments. The operator adjusts the flow rate and dosage of the injector as needed, and quantitatively adds the deoxidizer to the circulating water of the boiler.

In addition, the time and method of adding deoxidizer can be adjusted according to the situation. For example, after a period of normal operation of the boiler, the amount of deoxidizer added can be appropriately increased based on the boiler's operating status and water quality to ensure a stable and long-lasting deoxidization effect.

Generally speaking, deoxidizers are added to boilers to remove dissolved oxygen from water and reduce metal corrosion. The addition time is usually before the boiler is put into operation, and the addition method is usually achieved through pre assembly and injection system. However, the specific addition time and method must be adjusted and determined according to the actual situation and requirements of the boiler.