CN104671445A - Low-phosphorus treatment method of boiler water - Google Patents
Low-phosphorus treatment method of boiler water Download PDFInfo
- Publication number
- CN104671445A CN104671445A CN201310633503.8A CN201310633503A CN104671445A CN 104671445 A CN104671445 A CN 104671445A CN 201310633503 A CN201310633503 A CN 201310633503A CN 104671445 A CN104671445 A CN 104671445A
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- CN
- China
- Prior art keywords
- boiler
- water
- low
- dosing
- feed water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
- C02F5/145—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus combined with inorganic substances
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Abstract
The invention relates to a low-phosphorus treatment method of boiler water, which comprises the following steps: (1) assaying alkalinity, hardness, dissolved oxygen, salt content and iron content of water at a boiler dosing port, and calculating the concentration of water treatment agent to be added; (2) connecting a dosing pump with a water pump, and adding a boiler water low-phosphorus treatment agent by using a boiler deoxidation port or a soft water tank outlet end as a dosing port; and (3) measuring various control indexes and agent concentration of the boiler every 4 hours within 48 hours after dosing, making some adjustment on the dosing speed according to the assaying result, determining the sewage discharge frequency, and conventionally monitoring the boiler after all the conditions become normal. By using the new boiler water low-phosphorus treatment agent, the method effectively removes the phosphate radical content of the boiler water, enhances the pH value of the boiler water, greatly lowers the salt content in boiler vapor, and enhances the heat exchange efficiency of the boiler.
Description
Technical field
The invention belongs to chemical industry with field, relate to the treatment process of boiler feed water, particularly, relate to a kind of low parkerizing method of phosphorous boiler feed water.
Background technology
The process of boiler feed water is one of important channel of improving boiler thermal output.Water treatment is improper may cause boiler corrosion, fouling and priming, affects the normal operation of boiler.
The method of current boiler feed water process has Physical, chemical method and physico-chemical processes three class.Physical process often seldom uses because it can not obtain qualified boiler feed water.Chemical Treatment needs in boiler feed water, add hydroxy ethylene diphosphonic acid or 2-phosphate-1,2,4-butane tricarboxylate or the organic inhibitor agent such as polyacrylic acid or hydrolytic polymaleic anhydride.Physico-chemical processes is combined Physical and chemical method.
No matter be that chemical Treatment or physico-chemical processes water treatment method all need to add organic inhibitor agent; organic inhibitor agent is improper or its proportioning is improper; the phosphate radical of boiler feed water usually can be caused higher; and its pH value is on the low side and boiler feed water saltiness entirety is higher, thus add the problem of the saltiness of Boiler Steam.
Summary of the invention
Technical problem to be solved by this invention is to provide the low parkerized technology of a kind of Industrial Boiler water, and the present invention is achieved through the following technical solutions.
A low parkerized method for boiler feed water, comprises following steps:
(1) chemically examine basicity, hardness, dissolved oxygen, saltiness, the iron-holder index of boiler dosing mouth place water, then calculate the concentration of the water conditioner that must add;
(2) dosing pump and water pump are linked, using the deoxygenation mouth of boiler or softened water tank exit end as dosing mouth, add the low phosphating agent of boiler feed water;
(3) surveyed various Con trolling index and the drug concentration of a boiler in 48 hours after dosing every 4 hours, again some adjustment are done to dosing speed according to result of laboratory test, and determine blowdown frequency, after all are normal, monitor boiler routinely.
According to the low parkerized method of above-mentioned boiler feed water, it is characterized in that, the low phosphating agent of described boiler feed water is made up of sodium hydroxide, SODIUM PHOSPHATE, MONOBASIC, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, hexahydroaniline, diamine, sodium humate, S-WAT, tertiary sodium phosphate, deionized water.
According to the low parkerized method of above-mentioned boiler feed water, it is characterized in that, the proportioning of the low phosphating agent of described boiler feed water is as follows: sodium hydroxide: 3-4%, SODIUM PHOSPHATE, MONOBASIC: 1-2%, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid: 15-20%, hexahydroaniline: 5-7%, diamine: 4-6%, sodium humate: 0.1-1%, S-WAT: 1-3%, tertiary sodium phosphate: 2-3%, deionized water: 60-70%.
Present method effectively can remove the phosphate content of boiler feed water, thus improves the pH value of boiler feed water, significantly reduces the saltiness in Boiler Steam, thus increases substantially the heat exchanger effectiveness of boiler.
Embodiment
The low parkerized method of boiler feed water of the present invention, comprises following three steps:
(1) chemically examine basicity, hardness, dissolved oxygen, saltiness, the iron-holder index of boiler dosing mouth place water, then calculate the concentration of the water conditioner that must add;
(2) dosing pump and water pump are linked, using the deoxygenation mouth of boiler or softened water tank exit end as dosing mouth, add the low phosphating agent of boiler feed water;
(3) surveyed various Con trolling index and the drug concentration of a boiler in 48 hours after dosing every 4 hours, again some adjustment are done to dosing speed according to result of laboratory test, and determine blowdown frequency, after all are normal, monitor boiler routinely.
Key problem in technology of the present invention is the low phosphating agent of boiler feed water and proportioning thereof.
The low phosphating agent of boiler feed water of the present invention is made up of sodium hydroxide, SODIUM PHOSPHATE, MONOBASIC, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, hexahydroaniline, diamine, sodium humate, S-WAT, tertiary sodium phosphate, deionized water.
Phosphorus major part in boiler feed water is PO43-, if the PO43-of fruit boiler feed water generally need control at 0.3 ~ 1.0mg/L, then the pH value of boiler feed water is 9.00 ~ 9.37.Adopt conventional organic inhibitor agent, the P043-of boiler feed water needs to control at 0.3 ~ 1.0mg/L, then the pH value of boiler feed water is only 8.93 ~ 9.25, obviously on the low side; If improve the pH value of feedwater to 9.3 ~ 9.5, then the pH value of boiler feed water is 9.22 ~ 9.44, though can meet the demands, higher feedwater pH value is unfavorable to there being Boiler Material Transformation.
The proportioning of the low phosphating agent of boiler feed water of the present invention is as follows: sodium hydroxide: 3-4%, SODIUM PHOSPHATE, MONOBASIC: 1-2%, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid: 15-20%, hexahydroaniline: 5-7%, diamine: 4-6%, sodium humate: 0.1-1%, S-WAT: 1-3%, tertiary sodium phosphate: 2-3%, deionized water: 60-70%.
The present invention is by selecting the low phosphating agent of boiler feed water and proportioning, and can realize PO43-and control at 0.1 ~ 0.3mg/L, the pH value of boiler feed water just can reach 9.05 ~ 9.41, reaches the technique effect of the low phosphatization of boiler feed water.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. the low parkerized method of a boiler feed water, it is characterized in that, comprise following steps: basicity, hardness, dissolved oxygen, saltiness, the iron-holder index of (1) chemical examination boiler dosing mouth place water, then calculate the concentration of the water conditioner that must add; (2) dosing pump and water pump are linked, using the deoxygenation mouth of boiler or softened water tank exit end as dosing mouth, add the low phosphating agent of boiler feed water; (3) surveyed various Con trolling index and the drug concentration of a boiler in 48 hours after dosing every 4 hours, again some adjustment are done to dosing speed according to result of laboratory test, and determine blowdown frequency, after all are normal, monitor boiler routinely.
2. the low parkerized method of boiler feed water according to claim 1, it is characterized in that, the low phosphating agent of described boiler feed water is made up of sodium hydroxide, SODIUM PHOSPHATE, MONOBASIC, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, hexahydroaniline, diamine, sodium humate, S-WAT, tertiary sodium phosphate, deionized water.
3. the low parkerized method of boiler feed water according to claim 2, it is characterized in that, the proportioning of the low phosphating agent of described boiler feed water is as follows: sodium hydroxide: 3-4%, SODIUM PHOSPHATE, MONOBASIC: 1-2%, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid: 15-20%, hexahydroaniline: 5-7%, diamine: 4-6%, sodium humate: 0.1-1%, S-WAT: 1-3%, tertiary sodium phosphate: 2-3%, deionized water: 60-70%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310633503.8A CN104671445A (en) | 2013-11-28 | 2013-11-28 | Low-phosphorus treatment method of boiler water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310633503.8A CN104671445A (en) | 2013-11-28 | 2013-11-28 | Low-phosphorus treatment method of boiler water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104671445A true CN104671445A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310633503.8A Pending CN104671445A (en) | 2013-11-28 | 2013-11-28 | Low-phosphorus treatment method of boiler water |
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| CN (1) | CN104671445A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445314A (en) * | 2016-06-01 | 2017-12-08 | 鞍钢股份有限公司 | A kind of waste heat boiler water quality adjustment method |
| CN109607835A (en) * | 2019-02-14 | 2019-04-12 | 上海久安水质稳定剂厂 | Waste heat boiler of converter efficiently shells dirty scale remover online |
| CN109912050A (en) * | 2019-03-20 | 2019-06-21 | 河钢股份有限公司承德分公司 | A kind of method for treating water inhibiting boiler corrosion |
-
2013
- 2013-11-28 CN CN201310633503.8A patent/CN104671445A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445314A (en) * | 2016-06-01 | 2017-12-08 | 鞍钢股份有限公司 | A kind of waste heat boiler water quality adjustment method |
| CN109607835A (en) * | 2019-02-14 | 2019-04-12 | 上海久安水质稳定剂厂 | Waste heat boiler of converter efficiently shells dirty scale remover online |
| CN109912050A (en) * | 2019-03-20 | 2019-06-21 | 河钢股份有限公司承德分公司 | A kind of method for treating water inhibiting boiler corrosion |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |