CN100542981C - Highly enriched recirculated water scale inhibition water-softening chemicals and water treatment method - Google Patents
Highly enriched recirculated water scale inhibition water-softening chemicals and water treatment method Download PDFInfo
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- CN100542981C CN100542981C CNB2008100137460A CN200810013746A CN100542981C CN 100542981 C CN100542981 C CN 100542981C CN B2008100137460 A CNB2008100137460 A CN B2008100137460A CN 200810013746 A CN200810013746 A CN 200810013746A CN 100542981 C CN100542981 C CN 100542981C
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- water
- scale inhibition
- highly enriched
- recirculated water
- softening chemicals
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Abstract
The present invention relates to highly enriched recirculated water scale inhibition water-softening chemicals, this water-softening chemicals be with the ring pure six phosphoric acid ester be raw material.This water treatment method adopts following steps: get above-described highly enriched recirculated water scale inhibition water-softening chemicals; According to circulating cooling make-up water hardness≤3; 3～5; The water quality of 〉=5mmol/L adds 10,15 respectively, the highly enriched recirculated water scale inhibition water-softening chemicals of 30mg/L, behind the mixed dissolution, can use; After the recirculated water loss, add recirculated water and highly enriched recirculated water scale inhibition water-softening chemicals in above ratio.Highly enriched recirculated water scale inhibition water-softening chemicals of the present invention, phosphorus content is low, can reduce blowdown flow rate to greatest extent, and recirculated water can recycle, and realizes the target of zero blowdown.
Description
Technical field
The present invention relates to a kind of water conditioner, particularly a kind of highly enriched recirculated water scale inhibition water-softening chemicals, and make recirculated water reach the water treatment method of zero release.
Background technology
Because general water quality is harder, do not reach the purpose of process water, need to add water conditioner and soften processing.The treatment process of China's industrial circulating cooling water is generally taked " dissolution method ", promptly adds acidic substance, and system is operated under low pH value condition, the Ca in the control water
2+, Mg
2 +Deposited phenomenon does not take place.After the general time of operation, along with the consumption of water, reach certain concentration rate after, must discharge.Like this, bigger to the consumption of water, do not reach the requirement of zero release.
Summary of the invention
The present invention is in order to overcome the deficiency of above technology, a kind of features high scale-removing effect is provided, can have recycled, can reach the highly enriched recirculated water scale inhibition water-softening chemicals of zero emission requirement.
Another object of the present invention is to provide a kind of water treatment method that can reach zero emission requirement.
Highly enriched recirculated water scale inhibition water-softening chemicals of the present invention, its special feature is that with hexalin six phosphoric acid ester be raw material.
The highly enriched recirculated water scale inhibition water-softening chemicals of the invention described above in order further to improve effect, also comprises the 2-phosphonate group-1,2 of 0.1-20 times of weight hexalin six phosphoric acid ester, the 4-butane tricarboxylate.Described 2-phosphonate group-1,2,4-butane tricarboxylate's add-on is preferably 1-10 times, more preferably 1-4 times.
The highly enriched recirculated water scale inhibition water-softening chemicals of the invention described above in order to improve the antiseptic property of system, can make recirculated water move under high chlorine, also comprises the benzotriazole of 0.05-5 times of weight hexalin six phosphoric acid ester.The add-on of described benzotriazole is preferably 0.1-1 doubly.
Water treatment method of the present invention adopts following steps: get above-described highly enriched recirculated water scale inhibition water-softening chemicals; According to circulating cooling make-up water hardness≤3; 3～5; The water quality of 〉=5mmol/L adds 10,15 respectively, the highly enriched recirculated water scale inhibition water-softening chemicals of 30mg/L, behind the mixed dissolution, can use; After the recirculated water loss, add recirculated water and highly enriched recirculated water scale inhibition water-softening chemicals in above ratio.
Industrial circulating water loss back because of being divided into four kinds: evaporation, wind, leakage, blowdown, the damage by water consumption that wherein evaporation, wind, leakage caused accounts for about 65% of rate of water make-up, and blowdown accounts for about 35% of rate of water make-up.The consumption of evaporation, wind, leakage etc., controlled amounts is less, has only blowdown flow rate is reduced, could the real utilization ratio that improves water.Therefore, highly enriched recirculated water scale inhibition water-softening chemicals of the present invention and water treatment method mainly are to reduce blowdown flow rate to greatest extent, realize the target of zero blowdown.
The principle of work of highly enriched recirculated water scale inhibition water-softening chemicals of the present invention is: this water-softening chemicals is a kind of organic high molecular compound, the most of metal ion generation chemical reaction in energy and the water. and preferential and Ca
2+, Mg
2+Reaction.In pH value 8-9.5 scope, promptly produce the flocculence material and be deposited in the bottom, water is softened.Excessive by the control water-softening chemicals, make the fouling salt of water not reach state of saturation forever. realized the zero release of recirculated water. finally reached the infinite loop of water.
Highly enriched recirculated water scale inhibition water-softening chemicals of the present invention, phosphorus content is low, can move under high temperature (80 ℃), high pH value (8-9.5) system for a long time, can make the Cl of recirculated water
-In 1600mg/L and above operation, has good antiseptic property.
Adopt treatment process of the present invention, can reduce blowdown flow rate to greatest extent, recirculated water can recycle, and realizes the target of zero blowdown.
Embodiment
Embodiment 1:
Making method: getting hexalin six phosphoric acid ester is raw material, makes to concentrate recirculated water scale inhibition water-softening chemicals.
Usage: get above-mentioned highly enriched recirculated water scale inhibition water-softening chemicals, according to circulating cooling make-up water hardness≤3; 3～5; The water quality of 〉=5mmol/L adds 10,15 respectively, the highly enriched recirculated water scale inhibition water-softening chemicals of 30mg/L, behind the mixed dissolution, can use; After the recirculated water loss, add recirculated water and highly enriched recirculated water scale inhibition water-softening chemicals in above ratio.
The prescription of present embodiment is applicable to that mainly circulating cooling make-up water hardness is the water quality (low hard water) that is lower than 3mmol/L, and using dosage is a 10mg/L water.
Characteristic: the prescription phosphorus content of present embodiment is low. and recirculated water is turned round under conditions such as temperature 80C, pH value about 9.5, high concentration ratio, reach good treatment effect as usual, realize the zero release of sewage.
Embodiment 2:
Making method: press the weight ratio of 1:2, with hexalin six phosphoric acid ester and 2-phosphonate group-1,2, two kinds of raw materials of 4-butane tricarboxylate mix, the highly enriched recirculated water scale inhibition water-softening chemicals that is.
Usage: get above-mentioned highly enriched recirculated water scale inhibition water-softening chemicals, according to circulating cooling make-up water hardness≤3; 3～5; The water quality of 〉=5mmol/L adds 10,15 respectively, the highly enriched recirculated water scale inhibition water-softening chemicals of 30mg/L, behind the mixed dissolution, can use; After the recirculated water loss, add recirculated water and highly enriched recirculated water scale inhibition water-softening chemicals in above ratio.
The prescription of present embodiment is applicable to that mainly circulating cooling make-up water hardness is the water quality (middle hard water) of 3～5mmol/L, and using dosage is a 15mg/L water.
Characteristic: the prescription phosphorus content of present embodiment is low, and recirculated water is turned round under high concentration ratio. reach the zero release of sewage relatively, and better to high temperature (80 ℃), high pH value (8-9.5) system flexibility.
Embodiment 3:
Making method: press the weight ratio of 1:1:0.2, with hexalin six phosphoric acid ester, 2-phosphonate group-1,2, three kinds of raw materials of 4-butane tricarboxylate and benzotriazole mix the highly enriched recirculated water scale inhibition water-softening chemicals that is.
Usage: get above-mentioned highly enriched recirculated water scale inhibition water-softening chemicals, according to circulating cooling make-up water hardness≤3; 3～5; The water quality of 〉=5mmol/L adds 10,15 respectively, the highly enriched recirculated water scale inhibition water-softening chemicals of 30mg/L, behind the mixed dissolution, can use; After the recirculated water loss, add recirculated water and highly enriched recirculated water scale inhibition water-softening chemicals in above ratio.
The prescription of present embodiment mainly be applicable to circulating cooling make-up water hardness for 〉=5mmol/L (high hardness), high pH, high Cl
-Water quality, using dosage are 30mg/L water.
Characteristic: the prescription of present embodiment, except scale inhibition soft water effect, improved the antiseptic property of system greatly, can make the Cl of recirculated water
-In 1600mg/L and above operation, in the national design specifications to Cl
-Controlling index.In addition, can make more than the pH value range extension to 9.5 of system i.e. recirculated water operation under alkaline condition, the corrosion that has alleviated equipment to a great extent.
Embodiment 4:
Making method: press the weight ratio of 1:0.5, with hexalin six phosphoric acid ester and 2-phosphonate group-1,2, two kinds of raw materials of 4-butane tricarboxylate mix, the highly enriched recirculated water scale inhibition water-softening chemicals that is.
Other is substantially the same manner as Example 2.
Embodiment 5:
Making method: press the weight ratio of 1:15, with hexalin six phosphoric acid ester and 2-phosphonate group-1,2, two kinds of raw materials of 4-butane tricarboxylate mix, the highly enriched recirculated water scale inhibition water-softening chemicals that is.
Other is substantially the same manner as Example 2.
Embodiment 6:
Making method: press the weight ratio of 1:2:3, with hexalin six phosphoric acid ester, 2-phosphonate group-1,2, three kinds of raw materials of 4-butane tricarboxylate and benzotriazole mix the highly enriched recirculated water scale inhibition water-softening chemicals that is.
Other is substantially the same manner as Example 3.
Embodiment 7:
Making method: press the weight ratio of 1:10:0.1, with hexalin six phosphoric acid ester, 2-phosphonate group-1,2, three kinds of raw materials of 4-butane tricarboxylate and benzotriazole mix the highly enriched recirculated water scale inhibition water-softening chemicals that is.
Other is substantially the same manner as Example 3.
Test case 1:
Certain 300MW generating set recirculated water uses the scale inhibition water-softening chemicals of embodiment 1, with the conventional dose contrast of economizing on water. see Table 1:
Table 1
The circulating cooling make-up water hardness of present embodiment is the water quality (low hard water) of 2.8mmol/L, is 10mg/L water with dosage just.
Operational conditions is: recirculated water is 9.5 in temperature 80C, pH value, concentration rate is to turn round under 5 the condition, moves 300 days, opens condenser, no fouling, corrosion phenomenon.
Test case 2:
Certain 600MW generating set recirculated water uses the scale inhibition water-softening chemicals of embodiment 2, with the conventional dose contrast of economizing on water. see Table 2:
Table 2
The circulating cooling make-up water hardness of present embodiment is the water quality (middle hard water) of 4mmol/L, and using dosage is a 15mg/L water.
Operational conditions is: recirculated water is 9.5 in temperature 80C, pH value, concentration rate is to turn round under 5 the condition, moves 300 days, opens condenser, no fouling, corrosion phenomenon.
Test case 3:
Certain 600MW generating set recirculated water uses the scale inhibition water-softening chemicals of embodiment 3, with the conventional dose contrast of economizing on water. see Table 3:
Table 3
The circulating cooling make-up water hardness of present embodiment is the water quality (high hardness) of 8mmol/L, and using dosage is a 30mg/L water.
Operational conditions is: recirculated water is at temperature 80C, Cl
-Be 9.5 in 1600mg/L, pH value, concentration rate is to turn round under 5 the condition, moves 300 days, opens condenser, no fouling, corrosion phenomenon.
Claims (5)
1. a highly enriched recirculated water scale inhibition water-softening chemicals is characterized in that: include hexalin six phosphoric acid ester, the 2-phosphonate group-1,2 of 0.1-20 times of weight hexalin six phosphoric acid ester, 4-butane tricarboxylate, the benzotriazole of 0.05-5 times of weight hexalin six phosphoric acid ester.
2. highly enriched recirculated water scale inhibition water-softening chemicals according to claim 1, it is characterized in that: described 2-phosphonate group-1,2,4-butane tricarboxylate's add-on is 1-10 times.
3. highly enriched recirculated water scale inhibition water-softening chemicals according to claim 1, it is characterized in that: described 2-phosphonate group-1,2,4-butane tricarboxylate's add-on is 1-4 times.
4. highly enriched recirculated water scale inhibition water-softening chemicals according to claim 1 is characterized in that: the add-on of described acene triazole is 0.1-1 times.
5. water treatment method, it is characterized in that adopting following steps: the weighting profit requires 1 described highly enriched recirculated water scale inhibition water-softening chemicals; According to circulating cooling make-up water hardness≤3; 3～5; The water quality of 〉=5mmol/L adds 10,15 respectively, the highly enriched recirculated water scale inhibition water-softening chemicals of 30mg/L, behind the mixed dissolution, can use; After the recirculated water loss, add recirculated water and highly enriched recirculated water scale inhibition water-softening chemicals in above ratio.
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| CNB2008100137460A CN100542981C (en) | 2008-01-11 | 2008-01-11 | Highly enriched recirculated water scale inhibition water-softening chemicals and water treatment method |
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| CNB2008100137460A CN100542981C (en) | 2008-01-11 | 2008-01-11 | Highly enriched recirculated water scale inhibition water-softening chemicals and water treatment method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101863561B (en) * | 2010-07-14 | 2011-05-18 | 苏长伟 | Superhigh-temperature circulating water antisludging agent and application thereof |
| CN105036370A (en) * | 2015-06-30 | 2015-11-11 | 苏州佑君环境科技有限公司 | Ultra-temperature circulating water scale inhibitor and preparation method thereof |
| CN105585143A (en) * | 2015-12-22 | 2016-05-18 | 天津市尚拓环保科技有限公司 | Scale inhibitor for industrial water treatment and preparation method and application method thereof |
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2008
- 2008-01-11 CN CNB2008100137460A patent/CN100542981C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 植酸的制取及阻垢、除垢性能的研究. 刘西德，崔培英，顾克强.化学工程师，第7期. 2006 |
| 植酸的制取及阻垢、除垢性能的研究. 刘西德，崔培英，顾克强.化学工程师，第7期. 2006 * |
| 植酸的缓蚀阻垢性能的研究. 郗丽娟，张瑛洁.工业水处理，第25卷第12期. 2005 |
| 植酸的缓蚀阻垢性能的研究. 郗丽娟，张瑛洁.工业水处理，第25卷第12期. 2005 * |
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