Introduction of sponge iron filter: sponge iron filter (also called oxygen scavenger) using high-quality ore, the use of oxidation-reduction reaction principle-pass filter in addition to precipitate way exclude corrosion treated recycled water pipes, boilers, dissolved oxygen water dissolved oxygen content below 0.05 mg / L, the oxygen scavenger has a low frequency of backwashing, high compressive strength, not powder, that does not bear the board, a large surface area. High activity, and regeneration. Oxygen scavenger activation treatment of sponge iron was sponge-like porous iron particles, mention the sponge iron filter for dissolved oxygen in water (also called oxygen scavenger) using high-quality ore, the use of redox reaction principle, through the filter the exclusion type in addition to the precipitate manner, corrosion of the treated water, the dissolved oxygen content can be below 0.05 mg / L, circulating water pipes, boilers, dissolved oxygen, the oxygen scavenger backwash frequency, high compressive strength, not powder board that does not bear a large surface area. High activity, and regeneration. Oxygen scavenger in the sponge iron by the activation treatment, showed a sponge-like porous particles of iron, dissolved oxygen in water to provide the opportunity to react with the active iron, accelerate the oxidation-reduction reaction, chemical reaction with the dissolved oxygen in water are as follows of Fe2 + +2 OH-Fe2 + +2 OH: Fe + H2O +1 / 2O2 → +1 / 2H2O +1 / 4O2 → Fe (OH) 3 ↓ Applications: can be used for a variety of boilers, heat pipes pay, industrial recycling The cooling water need to remove dissolved oxygen. Sponge iron works: at room temperature filtered deaerator is a chemical deoxygenation, is specializing in the production activity of sponge iron (direct reduced iron) to remove the dissolved oxygen in water, the main component of the sponge iron is iron, its porous internal structure to provide The specific surface area is 5-10 times of the ordinary iron, rapid and radical oxidation reaction allows the oxygen and iron, dissolved oxygen stability in the 0.05 mg / L, the following reaction: 2Fe2 + +2 H2O + O2 → 2Fe (OH) 24Fe (OH) 2 +2 H2O + O2 → 4Fe (OH) 3 reaction products of Fe (OH) 2, Fe (OH) 3 floc precipitate readily soluble in water, when with the water flowing through the rest of the sponge iron particles was blocked, as long as a certain intensity of backwash water can rinse (about 5 minutes). Low consumption of sponge iron, according to the different treatment of water and water quality, generally 3-6 months added once. (Deoxygenated in a small amount of iron ions, usually 0.2-0.5mg / L, still conform to the national water quality standards for the hot water boiler, but steam boiler or the water supply of Fe2 +, the stringent requirements of water supply deaerator is the installation of iron removal device, remove the water of Fe2 +, the center offers a variety of ion exchange in addition to iron device for the user selected.) as water, oxygen scavenger, sponge iron is the use of particle size - of Fe3O4 powder below 200 mesh bonded together, particle size of about 2-5mm. Replacement reaction because of the restore process, the formation of the gap of a certain amount of powder particles bonded gap, making the high oxygen scavenger pore, large surface area, but also because of the primary ore direct reduction of income, relatively pure, so The activity is extremely high, the electrode and the oxygen produced by the reaction of Fe3O4, so as to achieve the deaerator purpose. Utilization has also been increased to more than 90%. And because a certain amount of impurities in the oxygen removal process between the particles can only be a weak bond, connection, basic stainless steel die into the group. Easy to make without the softening of water oxygen scavenger surface passivation, so the oxidation slows down, which will affect deoxidizing effect, it should soften again deaerator. Use for some time after backwashing. Sponge iron main technical characteristics: sponge iron deaerator technology works: 1. Room temperature operation, without heating, to overcome the heat, vacuum oxygen removal and heating energy shortcomings; at room temperature, oxygen, water without heating; covers an area of ??small space, easy to install, to overcome the heat, the inconvenience of the high-mounted vacuum deaerator; it works: sponge iron deoxidants is the activation treatment of high active filler, cavernous porous iron tablets, dissolved oxygen in water to react with the active iron conditions, radical oxidation occurs when oxygen-containing water through the sponge iron, water, oxygen and iron, thereby eliminating the water dissolved oxygen content. The system can be water, can be no time to prepare, no deaerator tank; not dissolved in the water soft floc when its accumulated to a certain extent, can be enacted in the backwash drain, so that the sponge iron recovery to The initial oxygen removal capacity. Deoxidizing effect is stable and reliable, the dissolved oxygen content of the stability of ≤ 0.05 mg / L, the water quality standards of the low-pressure boiler; features: new sponge iron filter deaerator have been available for several years in the country, early in the design of the device structure and process actual operation, there are some inadequacies were gradually exposed, and sometimes a great impact on system operation. Opportunity to react with the active iron, accelerate the redox reaction with the dissolved oxygen in water chemical reaction is as follows: Fe + H2O +1 / 2O2 → of Fe2 + +2 OH-Fe2 + +2 OH - +1 / 2H2O +1 / 4O2 → Fe (OH) 3 ↓ Applications: can be used for a variety of boilers, heat pipes pay, industrial circulating cooling water, etc. need to remove the place of the dissolved oxygen in water. Filter characteristics: 1. Run at room temperature without heating, to overcome the heat, vacuum oxygen removal and heating energy shortcomings; land, small space, easy to install, to overcome the heat, vacuum deoxygenation high installation inconvenience; How it works: sponge iron deoxidants is by the activation treatment of active filler is a sponge-like porous iron particles, dissolved oxygen in water to react with the active iron conditions, when water containing oxygen through the sponge iron oxygen in the water and iron, the radical oxidation reactions, thereby eliminating the dissolved oxygen content of water. Insoluble in water soft floc when its accumulated to a certain extent, you can backwash drain, so that the sponge iron recovery to the initial deoxygenation. Physical indicators: name of the index name index active iron ≥ 88% bulk density 2.2g/cm3 compressive strength of 1500N / T than the surface area 85g/cm3 corrosion index ≤ 3.4SiO2 + the AL2O3 ≤ 5.5S ≤ 0.03% the CU ≤ 0.002% Sn ≤ 0.002% bi ≤ 0.002%