CN103602975B - Metallic high temperature turns blue (blackout) process for cleanly preparing - Google Patents
Metallic high temperature turns blue (blackout) process for cleanly preparing Download PDFInfo
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- CN103602975B CN103602975B CN201310589420.3A CN201310589420A CN103602975B CN 103602975 B CN103602975 B CN 103602975B CN 201310589420 A CN201310589420 A CN 201310589420A CN 103602975 B CN103602975 B CN 103602975B
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- water
- blackout
- high temperature
- blue
- waste water
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- 238000000034 method Methods 0.000 title claims abstract description 59
- 230000008569 process Effects 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000002351 wastewater Substances 0.000 claims abstract description 47
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 230000029087 digestion Effects 0.000 claims abstract description 10
- 238000005345 coagulation Methods 0.000 claims description 15
- 230000015271 coagulation Effects 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 238000005342 ion exchange Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000008399 tap water Substances 0.000 abstract description 5
- 235000020679 tap water Nutrition 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 238000004381 surface treatment Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The present invention relates to metal surface treatment technology and field of Environment Protection; specifically adopt digestion absorption method and the ammonium chloride absorption process waste water produced in (blackout) process that turned blue by metallic high temperature to recycle, thus reach water saving, protection of the environment, reduce costs object.Digestion absorption method is that the first rinse water after turn blue (blackout) being processed reclaims, turn blue as last process the supplementary water of (blackout) solution, can slow down in (blackout) process of turning blue and add tap water generation solution splash phenomena, conserve water and heat energy; It is the Cleaning Wastewater of other operations reclaimed that ammonium chloride absorbs, and then adopts the NO in ammonium chloride absorption waste water
2 -, the water after neutralization can wash water as the water for cleaning of intermediate step or when going to toilet.The invention has the advantages that: the usage quantity greatly reducing tap water in metal bluing (blackout) production, regenerates Cleaning Wastewater, and cycle applications is in production or carry out trans-utilization, realize cleaner production and save energy and reduce the cost.
Description
Technical field
The present invention relates to metallic high temperature to turn blue (blackout) process for cleanly preparing, belong to metal finishing and field of Environment Protection.
Background technology
Steel-iron components surface turn blue (blackout) be a kind of method generating blue layer or black oxide film at piece surface.The method successfully can solve the decorative concerns of corrosion of metal problem and precision parts.Room temperature blackening is a kind of technology that twentieth century rises the end of the eighties to the beginning of the nineties, and strictly speaking, it is not burning technology, complex treatment process, production cost is high, has Heavy environmental pollution, compared with turning blue with alkalescence, the performance of film is stable not, and decorative effect unsightly.Traditional high temperature oxidation technology is alkaline Sodium Nitrite high temperature oxidation system mainly, and energy consumption is large, and the color development cycle is long, and contaminate environment also affects the healthy of workman.At present from anticorrosion and decorate properties contrast, it is thin that high-temperature oxidation has film, and solidity to corrosion is good, the feature of good decorating effect, is still widely used in national product.
The typical process that conventional high-temperature is turned blue (blackout):
Oil removing → washing → pickling (activation) → washing → high temperature turns blue (blackout) → hot water wash → washing → washing → drying → dehydration immersion oil → inspection
Produce wastewater flow rate in process that metallic high temperature turns blue (blackout) large, consume loss seriously, cause the wasting of resources.
Summary of the invention
The object of the invention is to overcome metallic high temperature and turns blue and produce the deficiency of a large amount of waste water in (blackout) process, a kind of clean preparation method is provided, the method meets energy-saving and emission-reduction and metallic high temperature turns blue the novel process of (blackout) technical requirements, the waste water produced in production process can be made again to recycle, save ecological hydrology, save sewage disposal expense.
The present invention mainly adopts digestion absorption method and ammonium chloride absorption process, metallic high temperature can be turned blue (blackout) time produce waste water in digest and assimilate, high temperature will be rich in turn blue the waste water recycling of (blackout) raw material, other Cleaning Wastewater carry out ammonium chloride method absorption, and the water after process can recycle again.The method is that one meets cleaner production and metallic high temperature turns blue the new process of (blackout) processing requirements, realizes water saving, reduce energy consumption and production costs from source.The present invention is achieved by the following technical solutions, and method is as follows:
Metallic high temperature turns blue (blackout) process for cleanly preparing, is characterized in that, comprise the following steps:
Step one, digestion absorption method: the first Cleaning Wastewater that turned blue by metallic high temperature (blackout) cleans is carried out being recovered to and digested in accumulator tank, then add to high temperature and turn blue in groove; Following effect can be realized: one can make up high temperature turns blue the loss of (blackout) groove Raw, two can alleviate high temperature turns blue when to supplement tap water in (blackout) process and produces solution splash phenomena (high temperature easily occurs and scalds operator's phenomenon), and three can save high temperature turns blue the heat energy of (blackout) groove.
The Waste Water Centralized produced in step 2, (blackout) process of being turned blue by metallic high temperature, in pond for recovering, detects the NO in waste water
2 -with Ph value.
Step 3, waste water in pond for recovering is sent into coagulation pond, according to detected result, determine to add ammonium chloride amount, removing NO
2 -; Add sodium hydroxide or potassium hydroxide, Ca
2+, Mg
2+and SO
4 2-ion precipitation, carries out filtering separation by above-mentioned water, the Ca in waste water
2+, Mg
2+and SO
4 2-plasma can realize solid-liquid separation more than 95%.Water after filtration is coagulation water, Ph value > 10.
Step 4, coagulation water is sent into second-stage treatment pond, add acid, regulate Ph value to 6.5 ~ 8.5, obtaining water is middle water, mainly contains Na in middle water
+, Cl
-, NO
3 -with a small amount of impurity, adopt membrane technique to carry out filtering separation, the clear water obtained is secondary treated wastewater.
Step 5, affiliated secondary treated wastewater can cycle applications turn blue in (blackout) production technique in metallic high temperature.
In described step 2, detect the NO in waste water
2 -be chemical analysis and acidometer detection method with the method for pH value.
In described step 3, adopt ammonium chloride absorption process removing NO
2 -, by the NO in waste water
2 -be converted into NO
3 -, prevent the NO producing contaminate environment during waste water neutralize process
2gas.Reaction principle is as follows:
NaNO
2+NH
4Cl=NaCl+2H
2O+N
2↑。
In described step 4, described acid is hydrochloric acid or nitric acid.
In described step 3, described coagulation water meets the first discharge standard requirement in GB18918-2002 " urban wastewater treatment firm pollutant emission standard ", this water can directly apply to wash water when on-site goes to toilet or cleaning floor, saves tap water consumption.
Invention beneficial effect: the present invention overcomes metallic high temperature technically and turns blue in (blackout) process and produce a large amount of waste water, slows down energy loss, reduces environmental pollution and affects the factor of operator's health.Adopt digestion absorption method and ammonium chloride absorption process can realize the comprehensive recycling of waste water in production scene.The present invention's advantage compared with conventional art can realize water of productive use to recycle scheme, both saved water resources, and reduced energy consumption again.
Accompanying drawing explanation
Fig. 1 is that metallic high temperature turns blue (blackout) cleaner production embodiment schema.
Embodiment
embodiment 1
1, traditional technology: oil removing → washing → pickling (activation) → wash → turn blue (blackout) → washing → washing → hot water wash → drying → dewatering rust preventive oil
The waste water produced in traditional technology production process carries out neutralizing treatment qualified discharge, or delivers to the sewage work that Environmental Protection Agency specifies, waste resource, the energy and cost.
2, composition graphs 1, cleaner production schema process for cleanly preparing of the present invention:
Oil removing → washing → pickling (activation) → wash → turn blue (blackout) → digestion recovery → hot water wash → drying → dewatering rust preventive oil
Water for cleaning in all production processes is all recycled recycling, does not need discharge.Wherein high temperature turns blue in (blackout) process, and temperature needs to reach 135 ~ 145 DEG C, and what traditional processing technology supplemented is tap water at normal temperature, and what process for cleanly preparing supplemented is digestion recycle-water, is rich in a large amount of turn blue (blackout) raw material and heat.
Metallic high temperature turns blue (blackout) process for cleanly preparing, comprises the following steps:
Step one, digestion absorption method: the first Cleaning Wastewater that turned blue by metallic high temperature (blackout) cleans is carried out being recovered to and digested in accumulator tank, then add to high temperature and turn blue in groove;
The Waste Water Centralized produced in step 2, (blackout) process of being turned blue by metallic high temperature, in pond for recovering, detects the NO in waste water
2 -with Ph value;
Step 3, waste water in pond for recovering is sent into coagulation pond, according to detected result, determine to add ammonium chloride amount, removing NO
2 -; Add sodium hydroxide or potassium hydroxide, Ca
2+, Mg
2+and SO
4 2-ion precipitation, carries out filtering separation by above-mentioned water, the Ca in waste water
2+, Mg
2+and SO
4 2-plasma can realize solid-liquid separation more than 95%.Water after filtration is coagulation water, Ph value > 10.
Step 4, coagulation water is sent into second-stage treatment pond, add acid, regulate Ph value to 6.5 ~ 8.5, obtaining water is middle water, mainly contains Na in middle water
+, Cl
-, NO
3 -with a small amount of impurity, adopt membrane technique to carry out filtering separation, the clear water obtained is secondary treated wastewater.
Step 5, affiliated secondary treated wastewater can cycle applications turn blue in (blackout) production technique in metallic high temperature.
In described step 2, detect the NO in waste water
2 -be chemical analysis and acidometer detection method with the method for Ph value.
In described step 3, adopt ammonium chloride absorption process removing NO
2 -, by the NO in waste water
2 -be converted into NO
3 -, prevent the NO producing contaminate environment during waste water neutralize process
2gas, reaction principle is as follows:
NaNO
2+NH
4Cl=NaCl+2H
2O+N
2↑。
In described step 4, described acid is hydrochloric acid or nitric acid.
In described step 3, described coagulation water can be applicable to wash water or cleaning floor when on-site goes to toilet.
Detect and analyze:
Adopt chemical analysis and acidometer to carry out detection to analyze:
NO in reprocessing cycle pond for recovering
2 -: 3.3g/L, Ph value 10.91
5, ammonium chloride absorption process: according to NO in reaction formula and waste water reclamation pond
2 -content, for 1000L waste water, need to add the amount of ammonium chloride and be not less than 3.84kg.
NaNO
2+NH
4Cl=NaCl+2H
2O+N
2↑
6, one-level water treatment: add acid additive hydrochloric acid (or nitric acid), regulates waste water Ph value to 7.5, produces throw out in pond for recovering.Adopt sedimentation filtration method, the clear water after filtering is left in coagulation pond.
7, secondary water treatment: the hydromining membrane technique in coagulation pond or ion exchange column are processed, the clear water obtained is secondary treated wastewater, and cycle applications is in production.
8, use is transformed: coagulation water meets the first discharge standard requirement in GB18918-2002 " urban wastewater treatment firm pollutant emission standard ", this water can directly apply to wash water when plant area goes to toilet or cleaning floor, reaches the effect of energy-saving and emission-reduction.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. metallic high temperature turns blue blackout process for cleanly preparing, it is characterized in that, comprises the following steps:
Step one, digestion absorption method: the first Cleaning Wastewater of being turned blue by metallic high temperature blackout cleaning carries out being recovered in digestion accumulator tank, then add to high temperature and turn blue in groove;
The Waste Water Centralized produced in step 2, blackout process of being turned blue by metallic high temperature, in pond for recovering, detects the NO in waste water
2 -and pH value;
Step 3, waste water in pond for recovering is sent into coagulation pond, according to detected result, determine to add ammonium chloride amount, removing NO
2 -; Add sodium hydroxide or potassium hydroxide, Ca
2+, Mg
2+and SO
4 2-ion precipitation, carries out filtering separation by above-mentioned water, the Ca in waste water
2+, Mg
2+and SO
4 2-ion can realize solid-liquid separation more than 95%, and the water after filtration is coagulation water, pH value > 10;
Described coagulation water is applied to wash water when on-site goes to toilet or cleaning floor;
Step 4, coagulation water is sent into second-stage treatment pond, add acid, adjust ph to 6.5 ~ 8.5, obtaining water is middle water, main containing Na in middle water
+, Cl
-, NO
3 -with a small amount of impurity, adopt ion exchange column to carry out filtering separation, the clear water obtained is secondary treated wastewater;
Step 5, described secondary treated wastewater can cycle applications turn blue in blackout production technique in metallic high temperature.
2. metallic high temperature turns blue blackout process for cleanly preparing according to claim 1, it is characterized in that, in described step 2, detects the NO in waste water
2 -be chemical analysis and acidometer detection method with the method for pH value.
3. metallic high temperature turns blue blackout process for cleanly preparing according to claim 1, it is characterized in that, in described step 3, adopts ammonium chloride absorption process removing NO
2 -, by the NO in waste water
2 -be converted into NO
3 -, prevent the NO producing contaminate environment during waste water neutralize process
2gas, reaction principle is as follows:
NaNO
2+NH
4Cl=NaCl+2H
2O+N
2↑。
4. metallic high temperature turns blue blackout process for cleanly preparing according to claim 1, and it is characterized in that, in described step 4, described acid is hydrochloric acid or nitric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589420.3A CN103602975B (en) | 2013-11-22 | 2013-11-22 | Metallic high temperature turns blue (blackout) process for cleanly preparing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589420.3A CN103602975B (en) | 2013-11-22 | 2013-11-22 | Metallic high temperature turns blue (blackout) process for cleanly preparing |
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|---|---|
| CN103602975A CN103602975A (en) | 2014-02-26 |
| CN103602975B true CN103602975B (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065473B (en) * | 2016-07-06 | 2019-03-26 | 陈衍旻 | Realize the iron and steel parts oxidation processing technique and system of sewage zero-discharge |
Citations (4)
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|---|---|---|---|---|
| CN1098146A (en) * | 1993-07-26 | 1995-02-01 | 但文哲 | Metal conditioner |
| CN1743272A (en) * | 2004-08-31 | 2006-03-08 | 厦门大学 | Method for removing ions in nano-level zirconium dioxide hydrate particle-water system |
| CN102418095A (en) * | 2011-11-18 | 2012-04-18 | 东莞市东辉贸易有限公司 | Galvanized chromium-free black passivating agent and preparation method thereof |
| CN103232068A (en) * | 2012-05-19 | 2013-08-07 | 唐翔 | Recycling and reutilization process for treating chromium slag and wastewater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5475435A (en) * | 1977-11-26 | 1979-06-16 | Matsushita Electric Works Ltd | Artificial patina-decorated sheet |
-
2013
- 2013-11-22 CN CN201310589420.3A patent/CN103602975B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098146A (en) * | 1993-07-26 | 1995-02-01 | 但文哲 | Metal conditioner |
| CN1743272A (en) * | 2004-08-31 | 2006-03-08 | 厦门大学 | Method for removing ions in nano-level zirconium dioxide hydrate particle-water system |
| CN102418095A (en) * | 2011-11-18 | 2012-04-18 | 东莞市东辉贸易有限公司 | Galvanized chromium-free black passivating agent and preparation method thereof |
| CN103232068A (en) * | 2012-05-19 | 2013-08-07 | 唐翔 | Recycling and reutilization process for treating chromium slag and wastewater |
Non-Patent Citations (2)
| Title |
|---|
| 含亚硝酸盐废水的处理;袁长征;《工业水处理》;19861231;第6卷(第3期);第34-36页 * |
| 钢铁件高温氧化（发蓝）工艺改进;吴文俊;《内燃机配件》;20011231(第5期);第23-24页 * |
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