CN101164910B - Method for confecting lime cream - Google Patents
Method for confecting lime cream Download PDFInfo
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- CN101164910B CN101164910B CN2006100480697A CN200610048069A CN101164910B CN 101164910 B CN101164910 B CN 101164910B CN 2006100480697 A CN2006100480697 A CN 2006100480697A CN 200610048069 A CN200610048069 A CN 200610048069A CN 101164910 B CN101164910 B CN 101164910B
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- lime milk
- value
- newborn
- preparing lime
- pond
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Abstract
This invention discloses a method for preparing lime milk, particularly using acidic solution such as: waste industrial acid or acidic waste-water containing acid being lower than 5%. During the preparation, the pH value of the preparation tank is greater than or equal to 9. This inventive method solves the problems of prior art method such as blocking by lime or unstable neutralization, with advantages of: reducing lime cost by 50%, increasing treatment capacity by 50%, the acceptance quality level being increased from 50% to 98%, saving water by 30%, the effluent meets the standard of environmental protection.
Description
Technical field
The invention belongs to Industrial Wastewater Treatment and applied technical field, be specifically related to handle the compound method of a kind of milk of lime that acidic industrial effluent uses.
Background technology
At present, domestic industry acid waste water adopts the method for acid-base neutralisation to carry out the waste water neutralizing treatment substantially, the alkaline matter that mainly uses as milk of lime and Wingdale as neutralizing agent.Wherein most widely used is that unslaked lime is joined newborn method.Its main use-pattern is the direct preparing lime milk of service water.The consequence that produces is that the milk of lime that produces a large amount of lime slag charges and generation is inhomogeneous, easily precipitation and fouling.In the influence and the continuity and the validity of technology, adopting a large amount of industrial fresh water preparing lime milks one in addition is waste water resource, the 2nd, and preparation and using in the milk of lime process produces new source of pollution, in having a strong impact on and the stably manufactured of technology and operation continuously.
Summary of the invention
The objective of the invention is to disclose a kind of method of preparing lime milk, utilize the acidic solution preparing lime milk, improve the solubleness of lime slurry, can in time handle the obstruction and the problems such as alluvial and waste process water of generation.
The object of the present invention is achieved like this, and its feature is to add acidic solution to carry out preparing lime milk in the preparing lime milk process.
The described acidic solution of the concrete scheme of the present invention is meant that acid concentration is less than 5% industrial acid fluid or industrial acidic wastewater.
Concrete scheme of the present invention also has, and during preparing lime milk liquid, requires to join pH value 〉=9 in the newborn pond.
The acidic solution amount of allocating into of the present invention accounts for 90%～97% of emulsion.
The present invention adopts mechanical stirrer to stir, and mixing parametric is 20～100r/min.
The present invention adopts following processing step when adopting the industrial acidic wastewater of processing to carry out preparing lime milk,
1) by blanking device lime is sent into and is joined Ru Chizhong, simultaneously by sour pump or enter join newborn pond the sour water pipeline in joining newborn pond for acid-bearing wastewater (or concentration is less than industrial acid fluid of 5%);
When 2) joining newborn operation, require to join pH value 〉=9 in the newborn pond, mixing liquid will stir; During pH value in joining newborn pond＜9, the lime blanking device starts, and pH value in the pond is brought up to pH value 〉=9;
3) the acidic solution amount of allocating into of the present invention accounts for 90%～97% of emulsion,
4) adopt mechanical stirrer to stir, mixing parametric is 20～100r/min.
The emulsion for preparing sent into by dedicated pipeline carry out neutralizing treatment in the sour water neutralization tank.
The present invention carries out preparing lime milk by utilizing acidic solution, solved fundamentally that lime stops up and in and the technology problem of unstable, solved lime cost 50% simultaneously nearly, increase by 50% according to the designed capacity processing power.The water outlet qualification rate brings up to 98% from 50%, and environmental protection index is up to standard comprehensively.Saved industrial fresh water usage quantity about 30%.
Embodiment
Below specific embodiments of the invention are elaborated.
Characteristics of the present invention add acidic solution and carry out preparing lime milk in the preparing lime milk process, its acidic solution is meant that acid concentration is less than 5% industrial acid fluid or industrial acidic wastewater.
During preparing lime milk liquid, require to join pH value 〉=9 in the newborn pond, to guarantee to join the basicity of emulsion, if the pH value less than 9 o'clock, is added the lime material by the lime blanking device to milk kitchen.
The acidic solution amount of allocating into accounts for 90%～97% of emulsion when joining breast, and allocate the time into according to actual proportioning situation is between 10～20 minutes at every turn; Adopt mechanical stirrer to stir, mixing parametric is 20～100r/min.
The present invention adopts following processing step when adopting industrial acidic wastewater to carry out preparing lime milk:
1) by blanking device lime is sent into and is joined Ru Chizhong, simultaneously by sour pump or enter join newborn pond the sour water pipeline in joining newborn pond for acid-bearing wastewater, or acid concentration is less than 5% industrial acid fluid;
When 2) joining newborn operation, require to join pH value 〉=9 in the newborn pond, mixing liquid will stir; During pH value in joining newborn pond＜9, the lime blanking device starts, and pH value in the pond is brought up to pH value 〉=9, the basicity of assurance milk kitchen;
3) the acidic solution amount of allocating into account for emulsion 90%～97%, to allocate the time into according to actual proportioning situation be between 10～20 minutes at every turn;
4) adopt mechanical stirrer to stir, mixing parametric is 20～100r/min.
Owing in joining newborn process, add an amount of acidic solution, improved the temperature of joining newborn process emulsion and the speed of intensification, emulsion solubleness is because of variation of temperature with at the CaCl of this generation simultaneously
2To the Ca in the emulsion (OH)
2Producing common-ion effcet has increased the solubleness of emulsion, thereby has solved the technology leftover problem that emulsion is stopped up and deposited.
When adopting industrial acidic wastewater to join breast, utilize the pending industrial acidic wastewater of a part to join breast, save new process water preparation acidic solution, both can play with acidic solution and join the breast effect, simultaneously also handled a part of industrial acidic wastewater, reached dual purpose of energy saving in this technological process.
Owing to adopted acidic solution to join breast, overcome join newborn process milk of lime inhomogeneous, produce the problem of precipitation and fouling, improved the quality of emulsion, thereby improved the quality that sour water neutralization tank spent acid is handled, the water outlet qualification rate brings up to 98% from 50%.
Claims (5)
1. the method for a preparing lime milk is characterized in that, adds acidic solution and carry out preparing lime milk in the preparing lime milk process, and described acidic solution is meant that acid concentration is less than 5% industrial acid fluid or industrial acidic wastewater.
2. the method for a kind of preparing lime milk according to claim 1 when it is characterized in that preparing lime milk liquid, requires to join pH value 〉=9 in the newborn pond.
3. the method for a kind of preparing lime milk according to claim 1 is characterized in that, the acidic solution amount of allocating into accounts for 90%～97% of emulsion.
4. the method for a kind of preparing lime milk according to claim 1 is characterized in that adopting mechanical stirrer to stir, and mixing parametric is 20～100r/min.
5. the method for a kind of preparing lime milk according to claim 1, adopt following processing step when it is characterized in that adopting the industrial acidic wastewater of processing to carry out preparing lime milk:
1) by blanking device lime is sent into and is joined Ru Chizhong, simultaneously by sour pump or enter join newborn pond the sour water pipeline in joining newborn pond for industrial acidic wastewater;
When 2) joining newborn operation, require to join pH value 〉=9 in the newborn pond, mixing liquid will stir; During pH value in joining newborn pond＜9, the lime blanking device starts, and pH value in the pond is brought up to pH value 〉=9;
3) the acid solution amount of allocating into accounts for 90%～97% of emulsion,
4) adopt mechanical stirrer to stir, mixing parametric is 20～100r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100480697A CN101164910B (en) | 2006-10-19 | 2006-10-19 | Method for confecting lime cream |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100480697A CN101164910B (en) | 2006-10-19 | 2006-10-19 | Method for confecting lime cream |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101164910A CN101164910A (en) | 2008-04-23 |
| CN101164910B true CN101164910B (en) | 2010-10-06 |
Family
ID=39333797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100480697A Expired - Fee Related CN101164910B (en) | 2006-10-19 | 2006-10-19 | Method for confecting lime cream |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101164910B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087603A (en) * | 1992-10-20 | 1994-06-08 | 罗姆和哈斯公司 | Stable lime white |
| UA72829C2 (en) * | 2003-05-05 | 2005-04-15 | Kostiantyn Mykolaiovyc Savchuk | Method for preparation, collection and cleaning of lime milk |
-
2006
- 2006-10-19 CN CN2006100480697A patent/CN101164910B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087603A (en) * | 1992-10-20 | 1994-06-08 | 罗姆和哈斯公司 | Stable lime white |
| UA72829C2 (en) * | 2003-05-05 | 2005-04-15 | Kostiantyn Mykolaiovyc Savchuk | Method for preparation, collection and cleaning of lime milk |
Non-Patent Citations (6)
| Title |
|---|
| JP昭57-196748A 1982.12.02 |
| JP特开平11-139850A 1999.05.25 |
| JP特开平8-277110A 1996.10.22 |
| 毛银海.提高石灰乳化效率的措施.铜业工程 4.2002,(4),91-94. |
| 毛银海.提高石灰乳化效率的措施.铜业工程 4.2002,(4),91-94. * |
| 赵清杰等.碱液制备石灰乳的工艺技术研究.中国有色金属学会第五届学术年会论文集.2003,142-143, 160. * |
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|---|---|
| CN101164910A (en) | 2008-04-23 |
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Granted publication date: 20101006 Termination date: 20211019 |
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