CN1064752C - Organic anti-scale corrosion inhibitor and its compounding process - Google Patents
Organic anti-scale corrosion inhibitor and its compounding process Download PDFInfo
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- CN1064752C CN1064752C CN 96118921 CN96118921A CN1064752C CN 1064752 C CN1064752 C CN 1064752C CN 96118921 CN96118921 CN 96118921 CN 96118921 A CN96118921 A CN 96118921A CN 1064752 C CN1064752 C CN 1064752C
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Abstract
The present invention relates to an organic anti-scale corrosion inhibitor for low pressure boilers, which is prepared by using polymaleic anhydride in organic polyhydroxylate salts and sodium ethylenediamine tetramethylene phosphonate in organic phosphonate as main components and appending dodecyl acetic amine and inorganic alkali as anti-scale corrosion inhibition synergistic agents. The present invention has obvious anti-scale and corrosion inhibition effect and wide applicable range of water quality and boiler types, and is capable of being solely used for water treatment. Boiler water does not generate air bubbles and steam and water co-boiling phenomena under high concentrated multiplying power and low dirt discharging rate. The present invention has the advantages of little medicine dosage, little pollution, energy saving, water saving, convenient operation and low cost, and has better generalization prospect.
Description
Organic anti-scale corrosion inhibitor of the present invention and compound method belong to chemical field, relate in particular to a kind of water treating agent for boilers.
In medium hardness water-hard water areas, the water quality saltiness is higher, existingly the former hydromining of boiler is added the method that method such as inorganic medicament is handled in the softening and pot with pot extracellular sodium ion interchanger secondary, has following problems: the former equipment purchasing expense height, complicated operation, equipment availability is low, easily causes resin cation (R.C.) to pollute, and regeneration saline solution concentration is wayward, can not remove the basicity in the unboiled water, thermosteresis is bigger, causes environmental pollution, and the cycle water loss is big; The latter increases pot water saltiness, influences steam quality, and formation secondary incrustation scale is detained at the position of precipitation threshold grain slag water cycle difference in pot of generation, the blow-down rate height, and thermosteresis is big, the cost of water treatment height, boiler can not be accomplished vimala operation.
, also more and more higher at boiler to the requirement of boiler water quality to today that modernization, high-parameters, large vol direction develop.How to guarantee boiler safety, economical operation, energy-saving and cost-reducing, the protection environment is the task of top priority that faces, and the present invention i.e. purpose and making for this reason.
Selecting more efficiently water treatment method is the key that realizes above-mentioned purpose, technical program of the present invention lies in:
1 selects organic polycarboxylate and organophosphate as the pot water conditioner, and the former condenses and dissemination by tool, the lattice distortion, and regeneration is from the release film effect; Latter's tool sequestering action is opened and civilian effect, the crystal distortion.The anticorrosion-antiscaling property that the two equal tool is good.
Polymaleic anhydride and the ethylene diamine tetra methylene phosphonic acid sodium in the organophosphate in the organic polycarboxylate of 2 selections are the major ingredient of anti-incrustation corrosion inhibitor of the present invention.
3 are aided with dodecyl acetoxyl amine and mineral alkali as the scale inhibitor synergistic agent.
Because adopt above technical scheme, the present invention can reach following technico-economical comparison:
Scale inhibition performance＞90% inhibition efficiency＞98% concentration rate, 10 blow-down rates＜5%
Pot alkalinity of water pH value meets that 0.6 yuan of/ton water of GB1576-93 standard dosage 5ppm processing costs is suitable for water quality, boiler type scope is wide.Can be used for water treatment separately, not need other assistant medicament.Energy-conservation, water saving, reduce environmental pollution, easy to operate, cost is low.
Fig. 1 is a process flow diagram of the present invention
Below in conjunction with Fig. 1 in detail embodiment is described in detail.
Handle 10M
3Water desired raw material, consumption and compound method:
1 prepared and diluted liquid:
1. prepare 40000～6000ppm polymaleic anhydride diluent: accurately pipette technical pure polymaleic anhydride 68.7～103.1ml, be diluted to 1000ml with pure water.
2. prepare 40000～60000ppm ethylene diamine tetra methylene phosphonic acid sodium diluent: accurately pipette technical pure ethylene diamine tetra methylene phosphonic acid sodium 108.3～162.5ml, be diluted to 1000ml with pure water.
2 preparation mixed solutions:
40～400g sodium hydroxide with the dissolving of 1000～1500ml pure water, in the cooling back immigration plastic containers, is added above-mentioned polymaleic anhydride diluent of 500～800ml and the above-mentioned ethylene diamine tetra methylene phosphonic acid sodium of 200～500ml diluent, mixing.
3 preparation hot water boiler inhibiter:
Above-mentioned mixed solution is diluted to 5000ml with pure water is finished product.
4 manufacture mixture:
Take by weighing edible soda ash 1000～2200g, caustic soda 40～200g, the two mix is stirred, and in the diluent and the above-mentioned ethylene diamine tetra methylene phosphonic acid sodium of the 200～500ml diluent of the above-mentioned polymaleic anhydride of 500～800ml slowly added soda ash and caustic soda in the spray mode the mixture and fully stirring makes it even simultaneously.
5 preparation anti-incrustation corrosion inhibitors:
Said mixture is placed die for molding → blowing half an hour → demoulding → dry up → pack → finished product.
Its usage is as follows:
| Classification | Be suitable for water quality | Dosage |
| The hot water boiler inhibiter | Hardness≤6mmol/l PH 〉=7 | 500ml/ ton water |
| Anti-incrustation corrosion inhibitor | Hardness≤6mmol/l PH 〉=7 | 150g/ ton water |
Claims (1)
1, a kind of compound method of organic anti-scale corrosion inhibitor, it is characterized in that handling 10M water needs:
1., preparation polymaleic anhydride diluent, its concentration is 40000～60000PPM;
2., preparation ethylene diamine tetra methylene phosphonic acid sodium diluent, its concentration is 40000～60000PPM;
3., preparation mixed solution: 40～400G sodium hydroxide with the dissolving of 1000～1500ML pure water, in the cooling back immigration plastic containers, is added above-mentioned polymaleic anhydride diluent of 500～800ML and the above-mentioned ethylene diamine tetra methylene phosphonic acid sodium of 200～500ML diluent, mixing;
4., preparation inhibiter: above-mentioned mixed solution is diluted to 5000ML with pure water;
5., manufacture mixture: take by weighing edible soda ash 1000～2200G, caustic soda 40～200G, the two mix is stirred, and in the diluent and the above-mentioned ethylene diamine tetra methylene phosphonic acid sodium of the 200～500ML diluent of the above-mentioned polymaleic anhydride of 500～800ML slowly added soda ash and caustic soda in the spray mode the mixture and fully stirring makes it even simultaneously;
6., preparation anti-incrustation corrosion inhibitor: said mixture is placed die for molding → blowing half an hour → demoulding → dry up → pack → finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118921 CN1064752C (en) | 1996-12-20 | 1996-12-20 | Organic anti-scale corrosion inhibitor and its compounding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118921 CN1064752C (en) | 1996-12-20 | 1996-12-20 | Organic anti-scale corrosion inhibitor and its compounding process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1160847A CN1160847A (en) | 1997-10-01 |
| CN1064752C true CN1064752C (en) | 2001-04-18 |
Family
ID=5125421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96118921 Expired - Fee Related CN1064752C (en) | 1996-12-20 | 1996-12-20 | Organic anti-scale corrosion inhibitor and its compounding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1064752C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385040C (en) * | 2005-01-21 | 2008-04-30 | 杜德明 | Antiscaling corrosion inhibitor of boiler and use thereof |
| CN103922491A (en) * | 2014-03-25 | 2014-07-16 | 潍坊格蓝电力环保科技有限公司 | Energy-saving scale inhibiting and removing anticorrosion compound medicament for steam boiler and preparation method of medicament |
| CN108529765A (en) * | 2017-03-01 | 2018-09-14 | 廊坊明泉化工建材有限公司 | A kind of petroleum refining enterprise boiler and drum scale inhibitor special and application thereof |
| CN110818103A (en) * | 2019-11-20 | 2020-02-21 | 德蓝水技术股份有限公司 | Low-pressure boiler scale and corrosion inhibitor and preparation method thereof |
| CN112251757B (en) * | 2020-09-15 | 2021-09-14 | 深圳市崇辉表面技术开发有限公司 | Protective water and preparation method thereof |
-
1996
- 1996-12-20 CN CN 96118921 patent/CN1064752C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1160847A (en) | 1997-10-01 |
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