-Introduction to Sponge Iron Deaerator Production

-Manufacturers of temperature filtration type deaerator, sponge iron deaerator grid, and boiler automatic sponge iron deaerator selection can all contact us by phone. Our company is engaged in boiler feedwater softening and sponge iron deaerator. Temperature filtration type deaerator manufacturers and suppliers can provide you with sponge iron deaerator grid, boiler automatic deaerator selection. If you have any needs in this area, friends can call us to discuss

2、 Sponge iron deaerator production - detailed information

Removing oxygen dissolved in water is of great significance in preventing corrosion of boilers or other water consuming equipment and ensuring their safe and economical operation. Our company has introduced advanced technology and developed a temperature filtration deaerator since 1995. Since its launch in the market, it has been proven that the dissolved oxygen content in the effluent of this deaerator can be maintained below 0.05mg/L, making it a preferred choice for low-pressure boiler deaeration equipment. The consumption of sponge iron is very low. Depending on the amount of water and water quality, it can be replenished every 3-6 months. After deoxygenation, a small amount of Fe and iron ions (usually 0.2-0.5mg/L) were added to the water, which still meets the water quality standards specified by the country for hot water boilers. But for steam boilers or feedwater deoxygenation with strict requirements for Fe and iron ions, an iron removal device can be installed after the existing deoxygenator to remove Fe and iron ions from the effluent of the deoxygenator and ensure the quality of boiler feedwater. Our company has various specifications of ion exchange iron removal devices for users to choose from.

3、 Sponge iron deaerator equipment--

1. Oxygen can be removed at - temperature, and the inlet water needs to be heated. Overcoming the deficiency of heating energy consumption in thermal and vacuum deoxygenation.

2. The deoxygenation process is stable and reliable, and the dissolved oxygen content in the effluent is stable below 0.05mg/L, meeting the water quality standards of a low-pressure boiler.

3. The equipment is complete, with automatic and manual control modes for users to choose from.

4. Installation - special requirements overcome the inconvenience of high installation required for thermal and vacuum deoxygenation.

5. System - simple, compact equipment. Small footprint.

6. For single tank fully automatic deaerator and iron remover - a backwash water pump must be installed.

7. Water containing oxygen passes through a sponge iron filter material, which is mainly composed of iron. The porous internal structure of the filter material has a huge specific surface area, which can cause the oxygen in the water to undergo oxidation reaction with iron, thereby maintaining the dissolved oxygen content in the effluent stable below 0.05mg/L. The reaction formula is:

2Fe+2H2O+O2 → 2Fe (OH) 2

Fe (OH) 2 is adsorbed on sponge iron particles, but it is unstable in oxygen-containing water and will be oxidized into a compound of tri iron. The reaction formula is:

4Fe (OH) 2+2H2O+O2 → 4Fe (OH) 3 ↓

The reaction product Fe (OH) 3 is a brown red flocculent precipitate insoluble in water, which is intercepted by sponge iron particles. When it accumulates to a certain extent, it can be washed clean with a certain amount of backwash water, and the sponge iron deaerator returns to its initial deoxygenation capacity.

At the filter layer, due to the low concentration of water oxygen, there is naturally a small amount of Fe2+in equilibrium with Fe (OH) 3, which can be removed by sodium type strong acid cation resin. The exchange reaction is:

Fe2++2RNa → R2Fe+2Na+

After resin loss, a dilute solution of NaCl (salt)+Na2SO3 can be used for regeneration (Na2SO3 solidly combines with 1-2% of the total capacity of NaCl). The purpose of adding Na2SO3 is to regenerate the resin, with a long service life.

4、 Control principle of fully automatic deaerator

The fully automatic deaerator system mainly consists of a control diaphragm valve (hydraulic or pneumatic), a JMA valve controller, and a deaerator tank. The controller provides opening and closing instructions to each controllable diaphragm valve according to the pre-set program to complete the opening and closing of each path, thereby realizing the various process processes of operation, backwashing, and washing- The JMA valve controller for control consists of a signal distributor and a time controller, fixed inside the controller housing. A signal distributor is a rotary guide valve that guides the opening and closing of various diaphragm valves on the switching equipment for liquid or gas signals, thereby completing automatic control of the equipment system. The valve core of the signal distributor is made of sturdy, corrosive, and self-lubricating materials, which have a long service life and require maintenance- The valve used for operation is a hydraulic or pneumatic diaphragm valve that has already been used internally and externally. This type of valve is easy to install and maintain, and non professionals can complete operations such as inspection, repair, and replacement.

5、 Sponge iron deaerator filter material - Sponge iron filter material

The performance of sponge iron filter material is the determining factor whether the deaerator can meet the design indicators. The deaerator must use sponge iron to achieve the desired deaeration results. HY sponge iron filter material is a high performance sponge iron filter material developed by our company for deaerator, which has undergone years of industrial practice and verification. It can fully meet the effluent design indicators of the deaerator, and has high purity, strong resistance to agglomeration, and stability, which is popular among users.

6、 Technical parameters of sponge iron deaerator

Working flow rate: 20-30m/h

Backwashing flow rate: 50m/h

Backwashing time: 5-8 minutes

Washing flow rate: 20-30m/h

Washing time: until the water is clear

Final control: inlet and outlet water pressure difference ≤ 0.05MPa

7、 Main technical indicators of sponge iron filter material

Specific surface area: 1.06m2/g

Total iron (Fe): ≥ 95%

Particle size range: 1.0~5.0mm

Loosening agent and promoter: ≈ 4%

Stacking ratio -1.7g/cm3

8、 Precautions for installation and use of sponge iron deaerator

[1] The equipment or added sponge iron should be backwashed to remove impurities.

[2] When filling sponge iron, pay attention to ensuring that the filling height of the two sides inside the tank is consistent.

[3] For steam boiler feedwater deoxygenation, it is required to use a de iron tank after the deaerator.

[4] When the filling height is less than 800mm, it is necessary to supplement sponge iron in a timely manner to reach the required height (up mirror - horizontal).

[5] When the deaerator is temporarily out of use, it should be rinsed clean, filled with water, sealed and stored under pressure, and must not lose water.

9、 Sponge iron boiler deaerator model and specifications:

(-) Specification and technical parameter table for fully automatic control type sponge iron deaerator

Model HYCY-4 HYCY-6 HYCY-10 HYCY-15 HYCY-20 HYCY-25 HYCY-30 HYCY-40 HYCY-50

Parameter Name

Effluent (M/H) 4 6 10 15 20 25 30 40 50

Outside the device

Shape and size

(mm) Diameter 400 500 600 700 800 900 1000 1100 1200

Tank height 2900 3000 3000 3150 3200 3250 3250 3300 3400

Land occupation (side length) 500 600 900 1000 1200 1300 1400 1500 1600

Connecting pipe diameter

(mm) Inlet and outlet pipes 32 40 50 50 65 80 80 100 100

Backwash water pipe 32 40 50 65 80 80 100 100 100

Filler - Quantity (kg) 250 400 550 750 975 1250 1500 1850 2200

Equipment load - (kg) 660 910 1320 1800 2300 3100 3800 4600 5400

Filler layer height (mm) 1200

Working pressure (MPa) 0.15-0.5MPa

Control mode automatic control, timed backwashing

Working temperature oC 8-50oC (When ＞ 50oC, users should provide suggestions for the manufacturer to handle)

（2） Manual Control Type Deaerator Specification and Technical Parameters Table

Model HYCY-4 HYCY-6 HYCY-10 HYCY-15 HYCY-20 HYCY-25 HYCY-30 HYCY-40 HYCY-50

Parameter Name

Effluent (M/H) 4 6 10 15 20 25 30 40 50

Outside the device

Shape and size

(mm) Diameter 500, 600, 700, 900, 1000, 1200, 1300, 1400, 1600

Tank height 3000 3000 3000 3150 3250 3250 3400 3400 3600 3600

Land occupation (side length) 600 900 1000 1200 1400 1600 1700 1800 2000

Inlet and outlet pipe diameter (mm) 32 40 50 50 65 80 80 100 100

Backwash water pump water volume (T/H) 8 12 20 30 40 50 60 80 100

Filler - Quantity (kg) 400 550 750 1250 1500 2200 2500 3000 4000

Equipment load - (kg) 900 1300 1800 3050 3700 5300 6500 7600 8800

Filler layer height (mm) 1200

Working pressure (MPa) 0.15-0.5MPa

Control mode: manual control, pressure difference control for backwashing

Working temperature oC 8-50oC (when>50oC)

-The HYCY sponge iron deaerator manufactured by the company is a manufacturer of sponge iron filtration deaerator for boilers. It is mainly used for temperature deaeration of softened water or desalinated water. It can reduce the water dissolved oxygen content to below 0.05mg/L to meet the requirements of hot water boilers, steam boilers, and heating network water supply. And the backwashing frequency is low, without clumping or pulverization, only a small amount of supplementation is needed, without the need to replace the deoxidizer, fully complying with the water quality standard GB1576-96 for low-pressure boilers.

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