Asahi Water Treatment Agents
Asahi's water treatment agent are a special polymer-based cleaning agent that has been perfected through compounding technology based on the results of advanced research over many years and a wealth of accumulated experience.
In addition to the conventional phosphoric acid type, we have a wide variety of types such as non-phosphorus type cleaning agents and multi-purpose can treatment agents.
Features
Suitable for various boilers
For various types of boiler water, we carry out precise analysis and study, and deliver the optimum formulation for the water supply and operating conditions.
For various types of boiler water, we carry out precise analysis and study, and deliver the optimum formulation for the water supply and operating conditions.
Of course, fine adjustments are also made by regular water sampling analysis.
Prevention of scale adhesion
The special polymer works to disperse scale components such as residual hardness so that they do not react or precipitate, and is quickly discharged out of the can by blowing.
The special polymer works to disperse scale components such as residual hardness so that they do not react or precipitate, and is quickly discharged out of the can by blowing.
Detachment of existing scale
It prevents the growth of crystals such as calcium, gradually exfoliates the existing scale, and quickly discharges it out of the can by blowing.
It prevents the growth of crystals such as calcium, gradually exfoliates the existing scale, and quickly discharges it out of the can by blowing.
Complete corrosion prevention
Forms a special film to protect the can body.
Forms a special film to protect the can body.
Sludge dispersion
Not only sludge such as scale, but also sludge such as iron oxide brought into the can by drain recovery, etc. is dispersed so that it does not adhere to the heat transfer surface and is discharged along with the blow.
Not only sludge such as scale, but also sludge such as iron oxide brought into the can by drain recovery, etc. is dispersed so that it does not adhere to the heat transfer surface and is discharged along with the blow.
Table 1
Best for energy saving
Not only does heat loss due to scale adhesion (Table 1) disappear, but the dispersing power of the special polymer enables high-concentration operation.
Not only does heat loss due to scale adhesion (Table 1) disappear, but the dispersing power of the special polymer enables high-concentration operation.
Management Standards for Asahi Refining Agents (Low Pressure Boilers) | boiler water | |
Normal operation | High speed driving | |
PH | 11.0 to 11.8 | 11.0 to 12.0 |
Electrical conductivity (mS/m) | 400 or less | 600 or less |
chloride ion (Cl-mg/l) | 400 or less | 600 or less |
Silica (SiO2mg/l) | 400 or less | 600 or less |
blow rate | 3-10% | 2-5% |
Asahi Deoxidizer
The biggest enemy of in-can corrosion is dissolved oxygen. Asahi deoxidizer quickly removes this dissolved oxygen and protects the inside of the can from corrosion.
Hydrazine type, sodium sulfite type, sugar type, etc. are available depending on the purpose and place of use.
Hydrazine type, sodium sulfite type, sugar type, etc. are available depending on the purpose and place of use.
A reaction accelerator is added to each component to quickly react with the dissolved oxygen in the feed water to remove the dissolved oxygen.
Dissolved oxygen content varies with temperature.Add the oxygen absorber according to the amount of dissolved oxygen.
Reaction of major oxygen scavengers with dissolved oxygen
Hydrazine N2H4+O2=N2+2H2O
Sodium sulfite type 2Na2SO3+O2= 2Na2SO4
Water supply temperature (°C) | 0 | 10 | 15 | 20 | 30 | 40 |
Oxygen O2(ppm/℃) | 14.56 | 11.25 | 10.06 | 9.08 | 7.48 | 6.4 |
Water supply temperature (°C) | 50 | 60 | 70 | 80 | 90 | 100 |
Oxygen O2(ppm/℃) | 5.56 | 4.68 | 3.8 | 2.9 | 1.57 | 0.00 |
Sludge dispersant
The sludge dispersant is a product mainly made of special polymer, and it works effectively on the sludge generated in the boiler, mainly iron oxides, calcium and magnesium scales generated by silica and hardness leaks, and removes impurities such as these. Prevents deposits from adhering to the heat transfer surface.
At the same time, the existing scale is also removed and peeled off to keep the inside of the boiler clean.
Please use it as a supplement to the boiler agent when the condition inside the boiler is not good.
Asahi Anticorrosive
M alkalinity in soft water (HCO3-ions) are decomposed at high temperature and pressure in the boiler to form carbon dioxide gas (CO2) is generated and migrates with the steam.
And it lowers the pH and promotes steam line corrosion.CO supplied to the steam line from the boiler2dissolves again during condensation of the vapor and its PH changes to that of CO2PH20 or less by dissolving 5.0ppm.
CO2combines with iron to form iron bicarbonate Fe (HCO3)2form O2It becomes ferrous hydroxide under the influence of and further corrodes the steel surface.
Asahi anti-corrosion agents that protect steam lines from corrosion are broadly divided into amine-based and film-based anti-corrosion agents.
Asahi anti-corrosion agents that protect steam lines from corrosion are broadly divided into amine-based and film-based anti-corrosion agents.
Reaction equation for decomposition
2NaHCO3→Na2CO3+ CO2↑+H2O
Na2CO3→2NaOH+CO2↑
Amine
As soon as it enters the boiler, it evaporates and is transported with steam to all places in the system, producing harmful carbon dioxide (CO2) to prevent corrosion of steam lines.
coating system
Composed of film-forming amine, it is transported together with steam to any place in the system to form a strong film that completely protects metal surfaces such as pipes.
Multi-purpose can treatment agent
The multi-purpose can treatment agent is a single product that functions as a can cleaning agent, oxygen absorber, dispersant, etc. It is easy to handle because it is a single product and is a liquid without the complexity of injecting many chemicals.
There are a wide variety of types, such as industrial, food, phosphoric acid, non-phosphorus, etc., and you can use them according to your purpose and application.
There are a wide variety of types, such as industrial, food, phosphoric acid, non-phosphorus, etc., and you can use them according to your purpose and application.
Asahi can preserving agent
It is a chemical agent for full water retention agents and exhibits excellent can retention effects such as PH adjustment and corrosion prevention.
Our water treatment agents for boilers are regularly analyzed for water quality, and not only do we provide appropriate advice, but we also make fine adjustments according to the water quality and usage conditions, so the inside of the boiler is kept clean forever.
Medicine
boiler
boiler
Inside a clean can when using Asahi Seikan Agent
Inside a can with scale
List of Water Treatment Agents for Boilers
Multi-purpose can treatment agent
Part number | Phosphate | non-phosphate | Use of non-polluting chemicals such as food additives or US FDA approved products | Contains hydrazine | Remarks |
KH series | ○ | ○ | Cleaning agent + oxygen absorber + dispersant | ||
KH□R series | ○ | ○ | for once-through boilers | ||
KA Series | ○ | ○ | Consists of food additives or FDA approved products | ||
KA*R series | ○ | ○ | |||
HB Series | ○ | ○ | non-phosphorus | ||
HB□R series | ○ | ○ | |||
HB□F series | ○ | ○ | Phosphorus-free and composed of food additives or FDA-approved | ||
HB□FR series | ○ | ○ |
Asahi Water Treatment Agents
Part number | Phosphate | non-phosphate | Use of non-polluting chemicals such as food additives or US FDA approved products | Contains hydrazine | Remarks |
B Series | ○ | Phosphorus-containing polymeric cleaning agent | |||
C Series | ○ | ||||
D Series | ○ | ||||
E series | ○ | ○ | Phosphorus-containing high-molecular cleaning agent composed of food additives or FDA-approved products | ||
F Series | ○ | ○ | |||
SB Series | ○ | Non-phosphorus cleaning agent | |||
SB□F series | ○ | ○ | A non-phosphorus cleaning agent composed of food additives or FDA-approved products |
Asahi Deoxidizer
Part number | Phosphate | non-phosphate | Use of non-polluting chemicals such as food additives or US FDA approved products | Contains hydrazine | Remarks |
H Series | ○ | hydrazine series | |||
A Series | ○ | Sodium sulfite system | |||
S series | ○ | Amine |
Asahi Anticorrosive
Part number | Phosphate | non-phosphate | Use of non-polluting chemicals such as food additives or US FDA approved products | Contains hydrazine | Remarks |
M series | Volatile amine | ||||
CH Series | |||||
R Series | ○ | film-forming amine | |||
MR Series | Film + volatile amine |
Sludge dispersant
Part number | Phosphate | non-phosphate | Use of non-polluting chemicals such as food additives or US FDA approved products | Contains hydrazine | Remarks |
FB Series | ○ | low phosphorus | |||
PB Series | ○ | non-phosphorus |
Asahi can preserving agent
Part number | Phosphate | non-phosphate | Use of non-polluting chemicals such as food additives or US FDA approved products | Contains hydrazine | Remarks |
K Series | For cans filled with water |
