CN1069704C - Descaling agent for gas water heater - Google Patents
Descaling agent for gas water heater Download PDFInfo
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- CN1069704C CN1069704C CN 98113988 CN98113988A CN1069704C CN 1069704 C CN1069704 C CN 1069704C CN 98113988 CN98113988 CN 98113988 CN 98113988 A CN98113988 A CN 98113988A CN 1069704 C CN1069704 C CN 1069704C
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Abstract
The present invention discloses a preparation method suitable for a scale remover for cleaning a gas water heater. The scale remover is composed of scale dissolving agents, penetrating agents, corrosion inhibitors, masking agents and suspending agents, wherein organic acid is used as the scale dissolving agents; non-ionic surfactants and anionic surfactants are used as the penetrating agents; benzotriazole is used as the corrosion inhibitors; thiourea is used as the copper ion masking agents; carboxymethyl cellulose classes are used as the suspending agents. The present invention has the characteristics of high efficacy and safe use, and has no adverse effect on fittings of the water heater.
Description
The invention belongs to the agent for cleaning and scale-removing in chemical cleaning technique field, particularly gas heater.
Domestic gas-fired water heater is that the nineties plays the high life articles for use that beginning enters ordinary people family in a large number, and along with the increase of duration of service, its cleaning and descaling problem begins to increase gradually.According to literature search and market survey, also do not solve the effective way of such problem at present.The gas heater of life-time service leaving water temperature(LWT) occurs through regular meeting and reduces, and phenomenons such as water flow minimizing make the heat transfer efficiency of water-heater reduce the serious normal use that also can influence water-heater.Analyze reason and mainly be because: carbon distribution is too much on (1) water-heater radiator element, forms the outer heat transfer thermal resistance of pipe; (2) calcium in the tap water, magnesium ion are deposited on the inwall of heat-transfer pipe with the form of carbonate, form incrustation scale, form the intraductal heat transfer thermal resistance on the one hand, bore is attenuated, block the proper flow of tap water, this point is especially serious at the turning of heat transfer heat pipe; (3) dissolved traces of carbon dioxide and oxygen in the tap water, chemical reaction takes place in long-term and copper effect, forms " verdigris " of the shape that loosens, and also can have a negative impact to the heat-transfer effect of heat transfer heat pipe; (4) owing to do not extinguish kindling material kept burning day and night for a long time, make pipeline produce incrustation scale, the serious meeting influence and the proper flow of obstruction water.Based on above-mentioned situation, the heat transfer efficiency that improves gas heater should be to reduce the inside and outside heat transfer resistance of pipe.For the outer thermal resistance of pipe, can adopt the way of purging to remove, processing is easier to.But the thermal resistance in the pipe is removed very inconvenience, and it is thinner that heat-transfer pipe is generally internal diameter.The copper tube that tube wall is thin, it is very difficult to adopt mechanical means to handle.Adopt common strong acid to carry out matting, improper as operation control on the one hand, cause the heat-transfer pipe seriously corroded easily; On the other hand, in the clean-out system that uses, as contain the poisonous composition that flavor is arranged, can influence the quality of water outlet.Chemical cleaning technique is to adopt chemical agent to remove attached to the dirt dissolving of solid surface such as metal, is generally used for industries such as the scale removal of boiler recirculated water, interchanger scale removal.General chemical uses strong acid such as hydrochloric acid, sulfuric acid as the incrustation scale solvating agent, but stronger to the corrodibility of metal (especially copper).In addition, used inhibiter also is the bigger chemical substance of toxicity, so the incrustation scale that uses above-mentioned chemical to clean gas heater is very unsafe.
The purpose of this invention is to provide a kind of efficient, safe agent for cleaning and scale-removing that is exclusively used in gas heater.
Design philosophy of the present invention is from the chemical substance nontoxic, tasteless, that corrodibility is low, filters out not only scale removal but also safe contaminant removing cleaning agent prescription.Concrete solution is: descaling agent for gas water heater is made up of following a few class materials; The incrustation scale solvating agent uses organic acid (citric acid and acetic acid), dissolves sedimentary carbonate deposit and copper dirt by chemical reaction; Permeate agent uses nonionogenic tenside (alkyl polyoxyethylene ether vitriol) and anion surfactant (sodium lauryl sulphate), by the osmosis of tensio-active agent, reduces the sticking power of incrustation scale at tube wall, improves cleaning performance; Inhibiter uses benzotriazole to suppress the corrosion of incrustation scale solvating agent to tube wall, and these product are nonpoisonous and tasteless, and corrosion mitigating effect is remarkable; The cupric ion sequestering agent uses thiocarbamide, in order to prevent the anticaustic phenomenon of tube wall; Suspension agent adopts carboxymethyl cellulose class or sodium polyacrylate, adjusts the viscosity of clean-out system, is beneficial to taking out of of solute.All kinds of materials of the present invention's regulation are composed as follows: incrustation scale solvating agent (citric acid, acetic acid): 2-8%, permeate agent (alkyl polyoxyethylene ether sodium sulfate, sodium lauryl sulphate): 0.4-1%, inhibiter: 0.008-0.03%, sequestering agent: 0.3-0.8%, suspension agent: 0.2-1%, its surplus is a water, and above-mentioned chemical substance stirring and dissolving in water gets final product.
Use chemical of the present invention to operate easily, remove the incrustation scale in the gas heater.Both the closed cycle method can be adopted, also infusion method can be adopted.The general time of cleaning is one hour.Water-heater leaving water temperature(LWT) after the cleaning can improve 5-10 ℃, and effluent quality is nonpoisonous and tasteless, meets hygienic standard.In addition, clean-out system is safe in utilization, and the accessory (as aqueous vapor interstage valve etc.) of water-heater is had no adverse effects.
Provide embodiments of the invention below:
A.100 after adding 5 kilograms of citric acid stirring and dissolving in the kg of water, adding 1 kilogram of carboxymethyl cellulose stirring dissolves, other gets 0.5 kilogram of aliphatic alcohol polyethenoxy sodium sulfate and stirs while adding, to the off-bottom no suspended substance, at last thiocarbamide 400 grams and benzotriazole 10 grams are added, stirred ten minutes, and promptly got this product.
B.36% 10 kilograms of acetic acid are converted in 100 kilograms of people's the water, after stirring, add 1 kilogram of sodium lauryl sulphate, all after the dissolving, add 0.5 kilogram of sodium polyacrylate, and 10 gram benzotriazoles and 400 restrain thiocarbamides, stir ten minutes, promptly get this product.
Claims (1)
1, a kind of descaling agent for gas water heater, by the incrustation scale solvating agent, permeate agent, inhibiter, sequestering agent, suspension agent and water are formed, the various chemical substances and the weight percent thereof that it is characterized in that its employing are as follows: the incrustation scale solvating agent uses citric acid or the acetic acid of 2-8%, permeate agent uses polyoxyethylenated alcohol sodium sulfate or the sodium lauryl sulphate of 0.4-1%, inhibiter uses the benzotriazole of 0.008-0.03%, sequestering agent uses the thiocarbamide of 0.3-0.8%, suspension agent uses carboxymethyl cellulose or the sodium polyacrylate of 0.2-1%, all the other content are water, and above-mentioned various chemical substances stir in water dissolves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113988 CN1069704C (en) | 1998-05-14 | 1998-05-14 | Descaling agent for gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113988 CN1069704C (en) | 1998-05-14 | 1998-05-14 | Descaling agent for gas water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1213649A CN1213649A (en) | 1999-04-14 |
| CN1069704C true CN1069704C (en) | 2001-08-15 |
Family
ID=5223674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98113988 Expired - Fee Related CN1069704C (en) | 1998-05-14 | 1998-05-14 | Descaling agent for gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1069704C (en) |
Cited By (4)
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|---|---|---|---|---|
| CN102040288A (en) * | 2010-11-16 | 2011-05-04 | 王冬梅 | Method for scale prevention of plain boiled water |
| CN101580310B (en) * | 2009-06-22 | 2011-08-31 | 谢云漫 | Food grade electric kettle scale remover and preparation method thereof |
| CN102296302A (en) * | 2011-08-31 | 2011-12-28 | 蚌埠市钰诚五金工贸有限公司 | High-efficiency environment-friendly pretreatment agent |
| CN106591846A (en) * | 2016-12-24 | 2017-04-26 | 叶宗瑞 | Scale scavenging agent and preparation method thereof |
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| CN102851672B (en) * | 2012-09-25 | 2014-07-09 | 海尔科化工程塑料国家工程研究中心股份有限公司 | Special antiscaling agent for water heater |
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| CN103666840A (en) * | 2013-11-18 | 2014-03-26 | 蚌埠市时代电子有限公司 | Special calcium remover for edition developing machine and preparation method of special calcium remover |
| CN103773616A (en) * | 2013-11-18 | 2014-05-07 | 蚌埠天光传感器有限公司 | Dedicated antiscaling agent for plate developing machine and preparation method of antiscaling agent |
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| CN104860403B (en) * | 2015-04-28 | 2017-02-01 | 陕西凯利清洗有限公司 | Liquid medicine for online cleaning of air separation workshop appliances and application method thereof |
| CN105623634B (en) * | 2015-12-18 | 2018-05-18 | 天津大学 | The anti-retarding agent of dirt of heat exchange surface fouling during inhibition oil field geothermal utilization |
| CN107541742B (en) * | 2016-06-27 | 2020-05-08 | 中国石油天然气股份有限公司 | Cleaning fluid for removing calcium carbonate scale and preparation method and application thereof |
| CN108220978A (en) * | 2018-01-31 | 2018-06-29 | 广州康蓓实业有限公司 | A kind of cleaning spraying |
| CN110714205B (en) * | 2019-09-16 | 2022-02-01 | 铜陵市华创新材料有限公司 | Electrolytic copper foil integrated machine anode plate descaling agent for lithium ion battery and preparation and use methods thereof |
-
1998
- 1998-05-14 CN CN 98113988 patent/CN1069704C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580310B (en) * | 2009-06-22 | 2011-08-31 | 谢云漫 | Food grade electric kettle scale remover and preparation method thereof |
| CN102040288A (en) * | 2010-11-16 | 2011-05-04 | 王冬梅 | Method for scale prevention of plain boiled water |
| CN102296302A (en) * | 2011-08-31 | 2011-12-28 | 蚌埠市钰诚五金工贸有限公司 | High-efficiency environment-friendly pretreatment agent |
| CN106591846A (en) * | 2016-12-24 | 2017-04-26 | 叶宗瑞 | Scale scavenging agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1213649A (en) | 1999-04-14 |
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