CN204486734U - A kind of crystallizer cooling water treatment system - Google Patents
A kind of crystallizer cooling water treatment system Download PDFInfo
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- CN204486734U CN204486734U CN201520184477.XU CN201520184477U CN204486734U CN 204486734 U CN204486734 U CN 204486734U CN 201520184477 U CN201520184477 U CN 201520184477U CN 204486734 U CN204486734 U CN 204486734U
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Abstract
The utility model relates to a kind of crystallizer cooling water treatment system, the outlet of soft water processor connects the entrance of water cooling pond and dispensation apparatus respectively by pipeline, the outlet of nitrogen pot connects the entrance of water cooling pond hot-tub respectively by pipeline, the entrance of water cooling pond is connected with the outlet of heat exchanger by pipeline, and the outlet of hot-tub connects heat exchanger through pipeline by heat-exchanger pump; The outlet of dispensation apparatus enters water cooling pond after the entrance that pipeline connects dosing pump; The entrance of water supply pump is connected with the outlet of water cooling pond by pipeline, and cold water delivery side of pump connects continuous cast mold through pipeline by filter, and the outlet of continuous cast mold connects hot-tub and water analysis outfit respectively by pipeline.The utility model solves carbon steel piping oxygen corrosion, improves pipeline life and stops the bursting accident of pipeline because of corrosion; What adhere to crystallizer copper pipe in basic elimination conveyance conduit sticks thing, particularly in the attachment of crystallizer copper pipe, stops copper pipe internal cooling uneven, avoids producing slab quality accident.
Description
Technical field
The utility model relates to water technology, specifically relates to the treatment system of metallurgy industry conticaster crystallizer cooling water.
Background technology
The conticaster crystallizer water of metallurgy industry, basic exist at inner surface of crystallizer copper pipe attachment chemical combination material such as iron content, calcium (sticking thing, foulant etc.), or conveyance conduit has corrosion, and particularly the defect such as spot corrosion is puzzled.Inner surface of crystallizer copper pipe attachment can reduce molten steel heat transfer effect in crystallizer copper pipe, affects the metallurgical effect of strand and even affects slab quality; The corrosion of pipeline has a strong impact on again the conveyance conduit life-span, even produces non-uniform corrosion explosion pipeline and causes the problems such as production accident.
Usual crystallizer waterpipe is carbon steel piping, and what take is neutral water quality, and its treatment process is substantially: soft water (supplementing) → water cooling pond → crystallizer copper pipe of continuous casting machine → hot-tub → cooling tower → water cooling pond.This water treatment technology disadvantage there is pipeline oxygen corrosion and crystallizer copper inside pipe wall to generate and stick thing and affect molten steel heat-transfer effect.
Utility model content
Technical problem to be solved of the present utility model is; a kind for the treatment of system of crystallizer cooling water of improvement is provided; by taking pipeline cleaning, plated film; to the distinct methods such as water quality protection, filtration process means; formation processing flow process; finally realize the oxygen corrosion of basic elimination pipeline, crystallization control device copper pipe fouling again.
The utility model takes following technical scheme to realize above-mentioned purpose.A kind of crystallizer cooling water treatment system, comprise water storage system and Water quality processing system, it is characterized in that, described water storage system is made up of heat-exchanger pump, water cooling pond, nitrogen pot and hot-tub; Described Water quality processing system is made up of soft water processor and heat exchanger; The outlet of soft water processor connects the entrance of water cooling pond and dispensation apparatus respectively by pipeline, the outlet of nitrogen pot connects the entrance of water cooling pond hot-tub respectively by pipeline, the entrance of water cooling pond is connected with the outlet of heat exchanger by pipeline, and the outlet of hot-tub connects heat exchanger through pipeline by heat-exchanger pump; The outlet of dispensation apparatus enters water cooling pond after the entrance that pipeline connects dosing pump; The entrance of water supply pump is connected with the outlet of water cooling pond by pipeline, and cold water delivery side of pump connects continuous cast mold through pipeline by filter, and the outlet of continuous cast mold connects hot-tub and water analysis outfit respectively by pipeline.
Described water cooling pond and described hot-tub are airtight container.
The utility model has the advantage of, solve carbon steel piping oxygen corrosion, improve pipeline life and stop the bursting accident of pipeline because of corrosion; What adhere to crystallizer copper pipe in basic elimination conveyance conduit sticks thing (fouling), particularly in the attachment of crystallizer copper pipe, stops copper pipe internal cooling uneven, avoids producing slab quality accident.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present utility model.
In figure: 1. water storage system, 11. heat-exchanger pumps, 12. water cooling ponds, 13. nitrogen pots, 14. hot-tubs, 2. water supply pump, 22. pipelines, 3. Water quality processing system, 31. soft water processors, 32. heat exchangers, 4. dispensation apparatus, 5. water analysis outfit, 6. continuous cast mold, 7. filter, 8. dosing pump.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.See Fig. 1, a kind of crystallizer cooling water treatment system, comprises water storage system 1 and Water quality processing system 3, it is characterized in that, described water storage system 1 is made up of heat-exchanger pump 11, water cooling pond 12, nitrogen pot 13 and hot-tub 14; Described Water quality processing system 3 is made up of soft water processor 31 and heat exchanger 32; The outlet of soft water processor 31 connects the entrance of water cooling pond 12 and dispensation apparatus 4 respectively by pipeline, the outlet of nitrogen pot 13 connects the entrance of water cooling pond 12 hot-tub 14 respectively by pipeline, the entrance of water cooling pond 12 is connected by the outlet of pipeline with heat exchanger 32, and the outlet of hot-tub 14 connects heat exchanger 32 through pipeline by heat-exchanger pump 11; The outlet of dispensation apparatus 4 is by entering water cooling pond 12 after the entrance of pipeline connection dosing pump 8; The entrance of water supply pump 2 is connected by the outlet of pipeline with water cooling pond 12, and the outlet of water supply pump 2 connects continuous cast mold 6 through pipeline by filter 7, and the outlet of continuous cast mold 6 connects hot-tub 14 and water analysis outfit 5 respectively by pipeline.Described water cooling pond 12 and described hot-tub 14 are airtight container.
embodiment:a better embodiment of the present utility model.A kind of crystallizer cooling water treatment system (as shown in Figure 1), comprising:
(1) water storage system 1: comprise water cooling pond 12 and each one of hot-tub 14, and heat-exchanger pump 11, nitrogen pot 13.Water cooling pond 12, hot-tub 14 are airtight container, and input (being full of) nitrogen (protection) by nitrogen pot 13 in water cooling pond 12, hot-tub 14.The water source of water cooling pond 12, one is the cold water after heat exchanger 32 cooling processing, and two is the supplementing water after soft water processor 31 processes.The water whereabouts of water cooling pond 12, is transported to filter 7 by water supply pump 2, then to continuous cast mold 6.The water source of hot-tub 14, from the outlet of continuous cast mold 6, the water whereabouts of hot-tub 14, enters heat-exchanger pump 11 entrance, is transported to heat exchanger 32 and cools.
(2) Water quality processing system 3: comprise soft water processor 31, heat exchanger 32; Soft water after soft water processor 31 processes enters the entrance of water cooling pond 12 and the entrance of dispensation apparatus 4 respectively; Heat exchanger 32 entrance connects heat-exchanger pump 11 and exports, and heat exchanger 32 exports the entrance connecting water cooling pond 12.
(3) dispensation apparatus 4: comprise pond of making up a prescription (bucket), agitating device, medicament.Carry the liquid medicine prepared to cool pond 12 through dosing pump 8.
(4) water analysis outfit 5: be equipment, the instrument composition of water analysis, mainly contains nephelometer, insulating box, measuring bottle, measurer, analysis vessel, analyzes medicament etc.
Water treatment system of the present utility model, mainly while providing cooling water for continuous cast mold 6, carries out water treatment to the cooling water returned.Object: one is for continuous cast mold 6 cooling steel water extraction is for cooling water, and two is the indexs ensureing water quality.So key of the present utility model is that a kind of applicable solution corrosive pipeline of design and copper pipe adhere to, the water quality of scale problems, realizes and ensure its effect.
Water quality design principle of the present utility model, mainly water norm controlling mechanism:
PH value: for the impact of metal erosion speed, pH value often depends on that the solubility of the oxide of this metal in water is to the dependence of pH value.Continuous cast mold 6 water medium carbon steel pipeline is containing Fe, and when low pH value, the corrosion of iron is mainly by H
+serve as that depolarizing agent causes, what therefore corrode is faster.When pH value height, OH content increases, and can form diaphragm on the surface of iron, and therefore corrosion rate reduces; Diaphragm forms iron ion and reduces.
Hardness: in water, calcium ion and magnesium ion concentration sum are called hardness of water, during calcium ions and magnesium ions excessive concentration, can and water in the effect such as carbonate, phosphate radical generate dirty, cause underdeposit corrosion.Control calcium ions and magnesium ions concentration and can control pipeline or copper pipe encrustation.Be stabilized in 0.1mmol/L in the total hardness of sealing and circulating water, be difficult to form dirt, and open type recirculated water total hardness controls when 1.5mmol/L, the possibility forming dirt is comparatively large, and the corrosive of pipeline also can be larger.
Anion: in corrosion of metal speed and water, the kind of anion has substantial connection.Anion mainly Cl in cooling water
-active ion, Cl
-be easy to be adsorbed by the oxidation film of metal surface, the oxonium ion in film is by Cl
-substitute, formed soluble chloride, oxide-film is destroyed, and metal surface can continue to cause corrosion.Therefore Cl in controlled cooling model water is wanted
-active ion (control reach the standard grade within).
Oxygen: oxygen plays an important role to metal erosion in industrial colling, can promote corrosion of metal.Therefore for reducing or preventing inner-walls of duct from corroding, contacting with air exclusion of water running process is extremely important.In pipeline, there is air etc. in water storage cavity volume and can increase water oxygen ion, thus anticorrosion unfavorable to pipeline.
Suspension: the suspension that often there is the compositions such as earth, the grains of sand, dust, corrosion product, incrustation scale, microorganism viscosity mud in cooling water, these suspensions may be brought into by supplementing water, also may generate in system cloud gray model.Suspension may generate deposit when flow velocity is lower, is deposited in pipeline, causes underdeposit corrosion, therefore dynamically will be removed by filter.
According to water quality design principle, form the utility model.First design dynamic water quality index technique, different periods adopts different water quality index, ensures that index is up to standard in addition from hardware and water quality technological operation.
Water treatment technology of the present utility model is: utilize different water quality index, reach different treatment effects, realize cleaning, plated film to pipeline etc., normally run, simultaneously in running, take the operational means such as control, dosing, realize the indexs such as Water-quality control PH, total hardness, chlorion, suspension; Overall process is with lacing film monitoring process quality.
Water quality index design (see table 1) of the present utility model:
The designing requirement of table 1 water quality index
Specific implementation method:
First, be control the water quality index of recirculated water, the method for pressing is carried out:
Pipeline cleaning technique is: be generally that new system is first cleaned pipeline, first provide water source by the design objective requirement of pipe blow-through, in recirculated water, suitably add oxalic acid regulate the pH value in water and fall hard agent, pipe blow-through when selecting nonproductive, scavenging period is 3-5 days, and the situation of the water observation and analysis suspension gone out with filter backwash determines scavenging period.If old system (system run), scavenging period can be a little longer, is generally 5-7 days.The object of cleaning, mainly removes (reason) by pipeline corrosion thing or dirt and falls, so enter Tube plating when not finding foulant and suspension < 10 mg/L in water.
Tube plating technique is: after pipeline cleaning, to stop using oxalic acid, have ready conditions and change a part of former water with new soft water, progressively add soda ash to heighten the pH value in water, and suitably add NaOH and sodium carbonate medicament, this stage can produce, and controls water quality, run 2 ~ 3 months by plated film tube road index request, getting sheet is observed, if observation lacing film is formed plated film and add weight, pipeline plated film is described, otherwise does not complete plated film and need time expand.
The normal operation process of pipeline is: refer to after pipeline removes corrosion and fouling, under inner-walls of duct plated film completes prerequisite, by normal process norm controlling water quality.First be reduce soda ash input amount in coating process method of operating, the recirculated water controlled by index request, substantially both can not produce fouling (thing) for a long time and also can not form corrosion; At pipeline normal operation period, also must lacing film monitoring water quality, general getting every half a year sheet is observed and weigh, and whether plated film destroys to analyze lacing film, sees whether fouling if destroy again; If only destroy and there is no fouling, take Tube plating technique; If plated film destroys and forms fouling, take pipeline first to clean coating process again, if do not have condition to stop production do pipeline cleaning, water quality pH value can be controlled between 6.0 ~ 6.5, carry out cleaning.
Next is the water treatment technology method of operating for keeping cycle water index:
One is adopt soft water processor 31 to produce water to former water and supplementing water, the ion exchange technique of application soft water processor 31, exchanged by the functional ionic on resin and the calcium in water, magnesium ion, thus calcium, magnesium ion unnecessary in recirculated water are fallen in absorption, get rid of calcium carbonate or magnesium carbonate in recirculated water;
Two is to tank, and instant heating pond 14, water cooling pond 12 are closed, isolated air contact, completely cuts off tolerable can protection by inflated with nitrogen;
Three is forbidding open type cooling towers, preferably adopts heat exchanger 32, reduces contacting with air of circulating water process;
Four is carry out high order number filtration treatment to recirculated water before user uses, and utilizes the backwash of filter 7 to manage and suspension, deposit, dust, the grains of sand, earth etc. are cleared out circulation;
Five is by dispensation apparatus 4, adds soda ash, falls the medicaments such as hard agent, degerming algicide, realize the up to standard of index;
Six is suitably send a small part recirculated water to some other department to other water system, increases amount of makeup water, to control Cl in water
-up to standard;
Seven is the water analyses be no less than once a day, for water treatment provides foundation.
Claims (2)
1. a crystallizer cooling water treatment system, comprises water storage system and Water quality processing system, it is characterized in that, described water storage system is made up of heat-exchanger pump, water cooling pond, nitrogen pot and hot-tub; Described Water quality processing system is made up of soft water processor and heat exchanger; The outlet of soft water processor connects the entrance of water cooling pond and dispensation apparatus respectively by pipeline, the outlet of nitrogen pot connects the entrance of water cooling pond hot-tub respectively by pipeline, the entrance of water cooling pond is connected with the outlet of heat exchanger by pipeline, and the outlet of hot-tub connects heat exchanger through pipeline by heat-exchanger pump; The outlet of dispensation apparatus enters water cooling pond after the entrance that pipeline connects dosing pump; The entrance of water supply pump is connected with the outlet of water cooling pond by pipeline, and cold water delivery side of pump connects continuous cast mold through pipeline by filter, and the outlet of continuous cast mold connects hot-tub and water analysis outfit respectively by pipeline.
2. crystallizer cooling water treatment system according to claim 1, is characterized in that, described water cooling pond and described hot-tub are airtight container.
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| CN201520184477.XU CN204486734U (en) | 2015-03-31 | 2015-03-31 | A kind of crystallizer cooling water treatment system |
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| CN201520184477.XU CN204486734U (en) | 2015-03-31 | 2015-03-31 | A kind of crystallizer cooling water treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529796A (en) * | 2018-03-07 | 2018-09-14 | 上海梅山钢铁股份有限公司 | A kind of high-voltage motor cooling water recirculation system |
| CN112719250A (en) * | 2020-12-18 | 2021-04-30 | 四川福蓉科技股份公司 | Constant-temperature and constant-pressure cooling circulation system and control method thereof |
| CN113091395A (en) * | 2021-03-29 | 2021-07-09 | 中国重型机械研究院股份公司 | Circulating cooling water return device and method for continuous casting machine equipment |
-
2015
- 2015-03-31 CN CN201520184477.XU patent/CN204486734U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529796A (en) * | 2018-03-07 | 2018-09-14 | 上海梅山钢铁股份有限公司 | A kind of high-voltage motor cooling water recirculation system |
| CN112719250A (en) * | 2020-12-18 | 2021-04-30 | 四川福蓉科技股份公司 | Constant-temperature and constant-pressure cooling circulation system and control method thereof |
| CN113091395A (en) * | 2021-03-29 | 2021-07-09 | 中国重型机械研究院股份公司 | Circulating cooling water return device and method for continuous casting machine equipment |
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