CN107916427B - Environment-friendly nitre tank agent - Google Patents
Environment-friendly nitre tank agent Download PDFInfo
- Publication number
- CN107916427B CN107916427B CN201711128714.0A CN201711128714A CN107916427B CN 107916427 B CN107916427 B CN 107916427B CN 201711128714 A CN201711128714 A CN 201711128714A CN 107916427 B CN107916427 B CN 107916427B
- Authority
- CN
- China
- Prior art keywords
- friendly
- acid
- environment
- agent
- nitric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/10—Other heavy metals
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses an environment-friendly nitre bath agent, which comprises the following components in percentage by weight: inorganic acid: 5-50%; oxidizing agent: 3-30%; water: the balance; the inorganic acid is sulfuric acid; the oxidant is at least one of hydrogen peroxide, potassium permanganate, sodium permanganate, potassium hydrogen persulfate and sodium percarbonate. The invention can be used as an environment-friendly nitrate tank agent for replacing nitric acid to clean and maintain chemical nickel plating equipment, and can reduce the problems of nitrogen-containing wastewater discharge, nitric oxide and nitrogen dioxide toxic gas discharge, potential safety hazards caused by nitric acid use and the like.
Description
Technical Field
The invention relates to the field of industrial cleaning, in particular to an environment-friendly nitrate tank agent which is used for replacing nitric acid, cleaning and maintaining a chemical nickel plating tank and removing nickel slag deposited and precipitated in the chemical nickel plating tank.
Background
The history of chemical nickel plating is short, and the actual application of the chemical nickel plating to the industry in foreign countries is only in the late 70 s and early 80 s. In 1844, a. wurtz found that metallic nickel could be deposited by hypophosphite reduction from an aqueous solution of metallic nickel salt. In 1944, the discovery by the U.S. national institute of standards a.brenner and g.riddell, clarified the catalytic properties of the formed coating, and discovered a method of depositing non-powdered nickel.
With the recent 40 years of development, electroless nickel plating has become a well-established industrial surface treatment technology and is widely used in various industrial sectors. The industrialized production of the electroless nickel plating in China starts late, but the development is very rapid in recent years. According to the statistics of the fifth chemical plating year published article, more than 300 manufacturers exist, but the number should be very conservative. It is presumed that the total annual market size of electroless nickel plating in China should be around 300 billion yuan and increase at a rate of 10% to 15% per year.
The chemical nickel plating industrialization is well-established and widely applied in various departments. However, no significant progress has been made in cleaning and maintaining nickel plating baths, and until now, the nickel layer and nickel slag deposited in the baths are cleaned by nitric acid. It is speculated that the chemical nickel plating bath in China uses nitric acid for cleaning and maintaining the nitrate bath, and the used nitric acid is as high as 150 million tons. Nitric acid is a volatile inorganic acid with strong oxidizing property and strong corrosiveness. In the using process of the nitric acid, the nitric acid can volatilize to form acid mist, so that the atmosphere is polluted; can decompose to form nitrogen dioxide yellow smoke and nitric oxide psychotoxic gas; the skin can be seriously burned to form scars when the skin is touched, so that the potential safety hazard is formed to the personal safety of field operators; and the wastewater contains a high concentration of total nitrogen. It is presumed that the discharge amount of nitric acid waste liquid and nitrogen-containing washing water generated after domestic use of a nitric acid and nitric acid tank is about 900 ten thousand tons per year, which causes serious pollution to water resources.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an environment-friendly nitrate tank agent which can be used for replacing nitric acid to clean and maintain chemical nickel plating equipment, and solves the problems of nitrogen-containing wastewater discharge, nitric oxide and nitrogen dioxide toxic gas discharge, potential safety hazards caused by the use of nitric acid and the like caused by the use of nitric acid.
In order to achieve the purpose, the invention adopts the following technical scheme:
the environment-friendly nitro-compound bath agent is characterized by comprising the following components in percentage by weight:
inorganic acid: 5-50%;
oxidizing agent: 3-30%;
water: the balance;
wherein: the inorganic acid is sulfuric acid; the oxidant is at least one of hydrogen peroxide, potassium permanganate, sodium permanganate, potassium hydrogen persulfate and sodium percarbonate;
preferably, the environment-friendly nitro-acid bath agent also comprises the following components in percentage by weight:
complexing agent: 1-10%;
a stabilizer: 1-10%;
corrosion inhibitor: 1-10%;
wherein: the complexing agent is at least one of ethylenediamine tetraacetic acid, sodium sulfide, citric acid, tartaric acid, oxalic acid, dithiopropanol and thioglycolic acid; the stabilizer is at least one of sodium silicate, magnesium silicate, fatty acid magnesium salt, polyacrylamide, malic acid and sodium citrate; the corrosion inhibitor is at least one of mercapto benzothiazole, methyl benzotriazole, 1-phenyl-5-mercapto tetrazole, silicate, molybdate and tungstate.
The invention has the advantages and beneficial effects that:
1. the sulfuric acid and the auxiliary complex thereof are used for replacing nitric acid to clean and maintain the chemical nickel plating equipment, so that the waste gas pollution and the discharge of nitrogen-containing waste water generated when a nitric acid nitrate tank is used are reduced;
2. the invention is a nitrate tank cleaning and maintaining agent of a sulfuric acid system, has no toxicity, no pollution, no flammability and no explosion, and meets the environmental protection standards and import and export requirements of various countries in the world.
Drawings
FIG. 1 is a 1K-fold magnified picture of the surface cleaning effect of a stainless steel nickel plating bath after 24 hours immersion in the nitric acid solution of comparative example 1;
FIG. 2 is a 1K-fold magnified picture of the surface cleaning effect of a stainless steel nickel-plating bath after being immersed in the environmental friendly nitronate bath agent of comparative example 9 for 24 hours;
FIG. 3 is a 5K times magnified picture of the surface corrosion effect of a stainless steel nickel plating bath after being soaked in nitric acid solution of comparative example 1 for 24 hours;
FIG. 4 is a 5K-fold magnified picture of the surface corrosion effect of a stainless steel nickel-plating bath after being immersed in the environmental friendly nitronate bath agent of comparative example 9 for 24 hours.
The specific implementation mode is as follows:
the invention is further explained below with reference to the drawings.
The invention relates to an environment-friendly nitrate tank agent which is characterized by comprising the following components in percentage by weight:
inorganic acid: 5-50%;
oxidizing agent: 3-30%;
water: the balance;
wherein: the inorganic acid is sulfuric acid; the oxidant is at least one of hydrogen peroxide, potassium permanganate, sodium permanganate, potassium hydrogen persulfate and sodium percarbonate;
preferably, the environment-friendly nitro-acid bath agent also comprises the following components in percentage by weight:
complexing agent: 1-10%;
a stabilizer: 1-10%;
corrosion inhibitor: 1-10%;
wherein: the complexing agent is at least one of ethylenediamine tetraacetic acid, sodium sulfide, citric acid, tartaric acid, oxalic acid, dithiopropanol and thioglycolic acid; the stabilizer is at least one of sodium silicate, magnesium silicate, fatty acid magnesium salt, polyacrylamide, malic acid and sodium citrate; the corrosion inhibitor is at least one of mercapto benzothiazole, methyl benzotriazole, 1-phenyl-5-mercapto tetrazole, silicate, molybdate and tungstate.
The following are several sets of comparative examples:
comparative example 1
Weighing the following components in percentage by mass to prepare a nitric acid solution:
nitric acid at a concentration of 68%: 50 percent;
water: 50 percent.
Comparative example 2
Weighing and preparing the environment-friendly nitrate tank agent according to the following components in percentage by mass:
sulfuric acid: 40 percent;
hydrogen peroxide: 5 percent;
water: and 55 percent.
Comparative example 3
Weighing and preparing the environment-friendly nitrate tank agent according to the following components in percentage by mass:
sulfuric acid: 30 percent;
hydrogen peroxide: 10 percent;
water: 60 percent.
Comparative example 4
Weighing and preparing the environment-friendly nitrate tank agent according to the following components in percentage by mass:
sulfuric acid: 20 percent;
hydrogen peroxide: 20 percent;
water: 60 percent.
Comparative example 5
Weighing and preparing the environment-friendly nitrate tank agent according to the following components in percentage by mass:
sulfuric acid: 10 percent;
hydrogen peroxide: 30 percent;
water: 60 percent of
Comparative example 6
Weighing and preparing the environment-friendly nitrate tank agent according to the following components in percentage by mass:
comparative example 7
Weighing and preparing the environment-friendly nitrate tank agent according to the following components in percentage by mass:
comparative example 8
Weighing and preparing the environment-friendly nitrate tank agent according to the following components in percentage by mass:
comparative example 9
Weighing and preparing the environment-friendly nitrate tank agent according to the following components in percentage by mass:
the complexing agent is added on the basis of the inorganic acid and the oxidant to accelerate the dissolution speed of the nickel slag, the stabilizer is added to slow down the self-decomposition speed of the oxidant and obtain a stable dissolution speed, and the corrosion inhibitor is added to protect the nickel plating bath from being attacked under the state of strong acid and strong oxidant.
According to the dissolution speed of nickel slag, the cleaning effect of the surface of the nickel plating bath and the corrosivity of the surface of the nickel plating bath, the comparison results are as follows:
the foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (1)
1. The environment-friendly nitro-bath agent is characterized by comprising the following components in percentage by weight:
inorganic acid: 5-20%;
oxidizing agent: 3-30%;
complexing agent: 1-5%;
a stabilizer: 1-10%;
corrosion inhibitor: 1-10%;
water: the balance;
wherein: the inorganic acid is sulfuric acid; the oxidant is at least one of hydrogen peroxide, potassium permanganate, sodium permanganate, potassium hydrogen persulfate and sodium percarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128714.0A CN107916427B (en) | 2017-11-15 | 2017-11-15 | Environment-friendly nitre tank agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128714.0A CN107916427B (en) | 2017-11-15 | 2017-11-15 | Environment-friendly nitre tank agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107916427A CN107916427A (en) | 2018-04-17 |
| CN107916427B true CN107916427B (en) | 2021-04-27 |
Family
ID=61896373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711128714.0A Active CN107916427B (en) | 2017-11-15 | 2017-11-15 | Environment-friendly nitre tank agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107916427B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959671B (en) * | 2022-06-16 | 2024-04-12 | 生益电子股份有限公司 | Stainless steel passivation solution and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862042A (en) * | 2016-06-08 | 2016-08-17 | 广东工业大学 | Nickel stripping solution and preparation method and application thereof |
-
2017
- 2017-11-15 CN CN201711128714.0A patent/CN107916427B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862042A (en) * | 2016-06-08 | 2016-08-17 | 广东工业大学 | Nickel stripping solution and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107916427A (en) | 2018-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101775601B (en) | A kind of chemical deplating solution and deplating method suitable for stripping the tin-nickel coating on the surface of brass | |
| CN103757633B (en) | A kind of magnesium alloy nickel strip method | |
| CN108425115B (en) | Environment-friendly tin stripping liquid | |
| CN102766876B (en) | Environment-friendly pickling inhibitor and application thereof in pickling of carbon steel | |
| CN105780025B (en) | A kind of low damage type pickle of the room temperature of 300 series stainless steel tubing and its acid washing method | |
| CN102586773A (en) | Passivating treatment method for stainless steel rare earth conversion coatings | |
| CN103882455A (en) | Nitric-acid-free stainless steel acid washing solution and preparation method thereof | |
| CN105401210A (en) | Environment-friendly stainless steel substrate plating stripping agent | |
| CN105862042A (en) | Nickel stripping solution and preparation method and application thereof | |
| JP2018520265A (en) | Pickling additive and production of surface oxide film of stainless steel material, and pickling method | |
| CN106757039A (en) | A kind of alumina polishing fluid and preparation method thereof | |
| CN105386066A (en) | Carbon steel pickling solution and use thereof | |
| CN106148963A (en) | A kind of environmental-protecting chemical stripping nickel agent and strip method thereof | |
| CN104195580A (en) | Additive for pickling scales on surface of stainless steel material as well as preparation of additive and pickling method | |
| CN101285196B (en) | Processing technology for surface oxide skin of aviation tubes | |
| CN107916427B (en) | Environment-friendly nitre tank agent | |
| CN103898529B (en) | Rust-removing method | |
| CN103614732B (en) | Environment-friendly type rust cleaning degreaser | |
| CN103882439B (en) | A kind of water-soluble metal degreasing derusting rust-proofing liquid and preparation method thereof | |
| CN105401151A (en) | Iron substrate plating neutral stripping agent | |
| CN109487088B (en) | A kind of copper-based nickel-plated-gold-plated layer waste plating metal gradient recovery method | |
| CN105543865B (en) | 400 series stainless steels of one kind annealing wire rod catalysis pickle and acid washing method | |
| CN102965676A (en) | Pickling process for zirconium and zirconium alloy casts | |
| CN104451729B (en) | Rust cleaning reagent | |
| CN114481146A (en) | Pickling solution for removing surface oxide layer of stainless steel plate strip and pickling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |