Boiler water deoxygenation and dosing device

The core function of the boiler water deoxygenation and dosing device is to convert dissolved oxygen into harmless substances through chemical reactions, ensuring the safe operation of the boiler system.

Main types

Hydrazine deoxygenation and dosing device

Principle: Hydrazine (N ₂ H ₄) reacts with dissolved oxygen to generate nitrogen and water (N ₂ H ₄+O ₂ → N ₂+2H ₂ O), suitable for high-pressure boilers. ‌

Composition: Includes solution tank, metering pump, control system, etc., supporting manual/automatic mode and PLC control. ‌

Sub deoxygenation device

Principle: Sub * reacts with oxygen to generate *, suitable for small and medium-sized boilers. ‌

Limitation: pH value needs to be controlled (optimal pH=6), and it may increase the salt content of the boiler. ‌

Sponge iron deaerator

Principle: Activated iron particles react with oxygen to produce iron oxide, suitable for medium and low temperature deoxygenation. ‌

Advantages: Automated backwashing, continuous water production, easy maintenance. ‌

Application scenarios

Thermal power plants: used for systems such as condensate and circulating water. ‌

Industrial boilers: as a supplementary measure for thermal deoxygenation. ‌

Technical Specifications

Hydrazine device: The oxygen content in the effluent should be ≤ 7 μ g/L (high pressure) or 15 μ g/L (low pressure). ‌

Control mode: supports time control, flow control, or detection control

Boiler water deoxygenation and dosing deviceThe advantages of this are mainly reflected in precise control of drug dosage, improvement of water quality stability, and extension of equipment life, which are suitable for scenarios such as power plants and chemical industries.

Accurate measurement and automated control

The device can accurately adjust the dosage of chemicals such as hydrazine and ammonia water through a metering pump and control system (supporting manual/automatic mode switching), avoiding manual errors and ensuring that the oxygen content of boiler feedwater meets standards (such as atmospheric deaerator ≤ 15 μ g/L, pressure type ≤ 7 μ g/L). ‌

Improve water quality stability and equipment safety

High deoxygenation efficiency: Through the hydrazine oxidation-reduction reaction (N ₂ H ₄+O ₂ → N ₂+2H ₂ O) or thermal deoxygenation, dissolved oxygen is effectively removed to prevent boiler corrosion and scaling. ‌

Prevent water ingress into the steam turbine: equipped with safety valves, water level detection devices, etc., to avoid equipment damage caused by the deaerator being filled with water. ‌

Strong adaptability and energy saving

Can operate under short-term overload (exceeding output by 50%) and adapt to different water quality and temperature conditions. ‌

The reboiling tube and foam generator are designed to improve the utilization rate of heat energy and reduce steam consumption. ‌

Multi-scenario application

In addition to boiler water treatment, it can also be used in scenarios such as circulating cooling water, chemical cleaning, and wastewater treatment to meet various industrial needs. ‌