CN102815797A - Multifunctional protective agent for boiler water supply system and preparation method thereof - Google Patents
Multifunctional protective agent for boiler water supply system and preparation method thereof Download PDFInfo
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- CN102815797A CN102815797A CN2012102413955A CN201210241395A CN102815797A CN 102815797 A CN102815797 A CN 102815797A CN 2012102413955 A CN2012102413955 A CN 2012102413955A CN 201210241395 A CN201210241395 A CN 201210241395A CN 102815797 A CN102815797 A CN 102815797A
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Abstract
The invention relates to a multifunctional protective agent for a boiler water supply system and a preparation method thereof. The protective agent comprises the following components expressed in mass percentage: 10 to 30% of cyclohexylamine, 5 to 15% of carbohydrazide, 10 to 20% of N-methyldiethanolamine, 1 to 5% of sodium humate and 20 to 75% of water, wherein the weight percentage of all the above-mentioned components sums to 100%. The protective agent provided by the invention is applicable to middle and low pressure boiler water supply processing systems and can effectively inhibit corrosion of a boiler, a furnace tube, a heat exchanger and a steam condensate system; the protective agent effectively controls stabilization of the pH value of water bodies in the boiler and the steam condensate system; and the protective agent effectively inhibits scale formation in the boiler, has stronger control and disperses generated scale which is then removed through pollution discharging by the boiler.
Description
Technical field
The present invention relates to corrosion protection, the antiscale field of chemical field, particularly a kind of protective material that is applied to the middle low-pressure boiler water feeding system and preparation method thereof.
Background technology
Steam is as a kind of power or thermal source, and cooling transformation becomes condensed water gradually after work done or heat exchange.In theory, steam condenses is purified, high-quality water, can not produce any problem to its carrier.But in practical application; More or less all contain impurity in the steam; Particularly contain many gaseous impuritieies in the industrial steam; In vapor condensation process, dissolve in the condensed water, in the course of conveying of condensed water, also can dissolve in certain gas simultaneously, the carrier of condensed water----heat-exchange equipment and transport pipe are produced corrosion.The meeting of seriously corroded causes a large amount of condensed water to reclaim, and great amount of water resources and heat are wasted.
So the subject matter that the vapor condenses water system occurs in practical application is the corrosion to carrier.In order to solve etching problem, developed the agent of steam condenses corrosion protection, in the vapor condenses water system, add, can reduce or stop the corrosion of water of condensation to carrier, guarantee the quality of condensed water, make it reach recycling.But there is following problem in existing medicament: the oxygen scavenging chemical of azanol class can produce acidic substance in the later stage, thereby increase the corrosion to boiler; What Scale inhibitors was commonly used is phosphoric acid salt, but the phenomenon that phosphoric acid salt exists phosphorus to hide can cause environmental problem, and its discharging is restricted.
Application number is 200510025384.3 to disclose a kind of multi-component boiler deoxidant, and the dissolved oxygen in the feedwater can be promptly removed in this agent, solves the corrosion of boiler and pipeline and interchanger, also has simultaneously to remove residual hard and scale effect.
Application number is 201110000457.9 to disclose a kind of oiler feed and use organic oxygen scavenger, and this agent can be removed the oxygen in the feedwater effectively, has pH value regulating effect simultaneously.
Application number is 200510025380.5 to disclose a kind of corrosive-proof boiler water deoxidant, and this agent can be removed the oxygen in the feedwater effectively, and in water, does not generate other by products and deposition, is applicable to low pressure boiler.
The boiler feed-water compound function of patent report in the past is more single; Given this we have developed and have been applicable to the boiler feed water system protective material; This protective material has quick deoxygenation, regulates feedwater pH value, has the scale inhibition dissemination simultaneously concurrently, compares with other protective materials commonly used now; Not only great amount of water resources and heat can be saved, and more the safe operation of boiler and steam system can be guaranteed.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of multi-function boiler water feeding system protective material is provided, be applied to the protection of middle low-pressure boiler water feeding system, can suppress the corrosion of sour gas effectively, guarantee the quality of condensed water, make it reach recycling.Protective material of the present invention is compared with other protective materials commonly used now, not only can save great amount of water resources and heat, and more can guarantee the safe operation of boiler and steam system.
The technical scheme that the present invention adopts is:
A kind of multi-function boiler water feeding system protective material, the mass percentage content of this protectant component and component is:
The weight percent sum of said components is 100%.
More preferably, the mass percentage content of this protectant component and component is:
The weight percent sum of said components is 100%.
More preferably, the mass percentage content of this protectant component and component is:
The present invention also provides above-mentioned multi-function boiler water feeding system protectant preparation method, comprises the steps:
Take by weighing each material according to above-mentioned weight percent, in order water, carbohydrazide, N-methyl-diethylolamine, Sodium salts humic acids, hexahydroaniline are added respectively in the stirring tank, rotating speed 350r/min stirs 30min, promptly gets this protective material product.
The present invention also provides above-mentioned multi-function boiler water feeding system protectant method of use, this protective material is added to after the deoxygenator of boiler, and addition is 10-40ppm.
The beneficial effect that the present invention had:
Protective material product of the present invention is applicable to the middle low-pressure boiler water treatment system; The etching problem that can effectively suppress boiler, boiler tube, interchanger, vapor condensation water system; Can fast and effeciently remove dissolved oxygen in the feedwater, and then suppress oxygen corrosion effectively by the dissolved oxygen initiation;
Protective material of the present invention is controlled water body pH stable of boiler water, vapor condensation water system effectively;
Protective material of the present invention suppresses gyp effectively, and is handling stronger, and the dirt that will generate disperses, and then obtains removing through draining of boiler.
Embodiment
Below in conjunction with embodiment the present invention is further specified, but do not limit protection scope of the present invention.
Embodiment 1
The protectant preparation method of a kind of multi-function boiler water feeding system; Add 740g water, 50g carbohydrazide, 100gN-methyl-diethylolamine, 10g Sodium salts humic acids, 100g hexahydroaniline in the stirring tank respectively successively; Rotating speed 350r/min stirs 30min, promptly gets this protective material product A.
Embodiment 2
The protectant preparation method of a kind of multi-function boiler water feeding system; Add 300g water, 150g carbohydrazide, 200gN-methyl-diethylolamine, 50g Sodium salts humic acids, 300g hexahydroaniline in the stirring tank respectively successively; Rotating speed 350r/min stirs 30min, promptly gets this protective material product B.
Embodiment 3
The protectant preparation method of a kind of multi-function boiler water feeding system; Add 510g water, 100g carbohydrazide, 150gN-methyl-diethylolamine, 40g Sodium salts humic acids, 200g hexahydroaniline in the stirring tank respectively successively; Rotating speed 350r/min stirs 30min, promptly gets this protective material products C.
Embodiment 4
The protectant preparation method of a kind of multi-function boiler water feeding system; Add 460g water, 100g carbohydrazide, 100gN-methyl-diethylolamine, 40g Sodium salts humic acids, 300g hexahydroaniline in the stirring tank respectively successively; Rotating speed 350r/min stirs 30min, promptly gets this protective material product D.
Experimental data
1, experiment
The protective material product that embodiment 1-4 is made is filled into after the deoxygenator by the addition of 10ppm, moves after two weeks, measures water-quality guideline respectively: dissolved oxygen, pH value etc.
2, detect index
(1), the mensuration of dissolved oxygen, multi-functional water quality determinator carries out the detection of oxygen in water.
(2), the mensuration of pH value, select for use pH meter water quality to be carried out the mensuration of pH value.
The experimental result of table 1 embodiment 1-4 variant prodn
| NO. | The A product | The B product | The C product | The D product |
| PH value qualification rate, % | 78 | 98 | 98 | 99 |
| The dissolved oxygen qualification rate, % | 87 | 99 | 98 | 98 |
| Scale inhibition performance, % | 80 | 97 | 98 | 99 |
Can know that by table 1 product B, C, D all show effect preferably, through measuring water quality after the circulation of two weeks, the dissolved oxygen qualification rate reaches more than 95%, and pH value qualification rate reaches more than 95%; Scale inhibition performance reaches more than 96%.But considerations such as comprehensive cost, product D is more desirable.With reference to dosage 10-40ppm, concrete dosage is decided according to site specific.
The above only is preferred embodiment of the present invention, is not technical scheme of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. multi-function boiler water feeding system protective material, it is characterized in that: the mass percentage content of this protectant component and component is:
The weight percent sum of said components is 100%.
2. a kind of multi-function boiler water feeding system protective material according to claim 1, it is characterized in that: the mass percentage content of this protectant component and component is:
The weight percent sum of said components is 100%.
3. a kind of multi-function boiler water feeding system protective material according to claim 1 and 2, it is characterized in that: the mass percentage content of this protectant component and component is:
4. the protectant preparation method of each said multi-function boiler water feeding system of claim 1-3 is characterized in that: comprise the steps:
Take by weighing each material according to above-mentioned weight percent, in order water, carbohydrazide, N-methyl-diethylolamine, Sodium salts humic acids, hexahydroaniline are added respectively in the stirring tank, rotating speed 350r/min stirs 30min, promptly gets this protective material product.
5. the protectant method of use of each said multi-function boiler water feeding system of claim 1-3, it is characterized in that: this protective material is added to after the deoxygenator of boiler, addition is 10-40ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012102413955A CN102815797A (en) | 2012-07-12 | 2012-07-12 | Multifunctional protective agent for boiler water supply system and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102413955A CN102815797A (en) | 2012-07-12 | 2012-07-12 | Multifunctional protective agent for boiler water supply system and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073808A (en) * | 2014-06-18 | 2014-10-01 | 华电电力科学研究院 | Stop protection agent and stop protection method for waste heat boiler of gas turbine power plant |
| CN105090681A (en) * | 2014-05-08 | 2015-11-25 | 苏州可利尔水处理有限公司 | Steam pipeline protection agent |
| CN106167305A (en) * | 2015-11-25 | 2016-11-30 | 天津市奔晟新材料科技开发有限公司 | The neutralizing amine protective agent of boiler and condensate system |
| CN106904678A (en) * | 2017-02-08 | 2017-06-30 | 上海南阳精细化工有限公司 | Application of the L vitamin Cs in boiler supply water deaerating corrosion inhibiter |
| CN111018028A (en) * | 2019-12-06 | 2020-04-17 | 南通联膦化工有限公司 | Environment-friendly boiler deoxidant |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092864A (en) * | 2011-01-04 | 2011-06-15 | 王仲贤 | Organic deoxidant for boiler feed water |
-
2012
- 2012-07-12 CN CN2012102413955A patent/CN102815797A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092864A (en) * | 2011-01-04 | 2011-06-15 | 王仲贤 | Organic deoxidant for boiler feed water |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090681A (en) * | 2014-05-08 | 2015-11-25 | 苏州可利尔水处理有限公司 | Steam pipeline protection agent |
| CN104073808A (en) * | 2014-06-18 | 2014-10-01 | 华电电力科学研究院 | Stop protection agent and stop protection method for waste heat boiler of gas turbine power plant |
| CN104073808B (en) * | 2014-06-18 | 2016-07-06 | 华电电力科学研究院 | A kind of combustion engine power station waste heat boiler Shut-down Protection agent and guard method thereof |
| CN106167305A (en) * | 2015-11-25 | 2016-11-30 | 天津市奔晟新材料科技开发有限公司 | The neutralizing amine protective agent of boiler and condensate system |
| CN106904678A (en) * | 2017-02-08 | 2017-06-30 | 上海南阳精细化工有限公司 | Application of the L vitamin Cs in boiler supply water deaerating corrosion inhibiter |
| CN111018028A (en) * | 2019-12-06 | 2020-04-17 | 南通联膦化工有限公司 | Environment-friendly boiler deoxidant |
| CN111018028B (en) * | 2019-12-06 | 2022-01-28 | 南通联膦化工有限公司 | Environment-friendly boiler deoxidant |
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Application publication date: 20121212 |