KR20140009645A - Apparatus for processing acid cleaning liquid type of preventing bubble generation and method having the same - Google Patents

Apparatus for processing acid cleaning liquid type of preventing bubble generation and method having the same Download PDF

Info

Publication number
KR20140009645A
KR20140009645A KR1020120075899A KR20120075899A KR20140009645A KR 20140009645 A KR20140009645 A KR 20140009645A KR 1020120075899 A KR1020120075899 A KR 1020120075899A KR 20120075899 A KR20120075899 A KR 20120075899A KR 20140009645 A KR20140009645 A KR 20140009645A
Authority
KR
South Korea
Prior art keywords
pickling solution
pickling
bubble generation
generation
block
Prior art date
Application number
KR1020120075899A
Other languages
Korean (ko)
Other versions
KR101406473B1 (en
Inventor
김지훈
이용헌
김진석
Original Assignee
주식회사 포스코
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020120075899A priority Critical patent/KR101406473B1/en
Publication of KR20140009645A publication Critical patent/KR20140009645A/en
Application granted granted Critical
Publication of KR101406473B1 publication Critical patent/KR101406473B1/en

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
    • C23G1/08—Iron or steel
    • C23G1/086—Iron or steel solutions containing HF
    • 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
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • 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
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/027—Associated apparatus, e.g. for pretreating or after-treating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

The present invention relates to a bubble generator which is installed in a pickling solution collecting area and a pickling solution analyzing part and is connected to a storage container main body for temporarily storing pickling solution and a main body of the storage container, According to the present invention, it is possible to precisely measure the concentration and the like of the pickling solution by blocking the generation of bubbles in a pickling solution or the like used for the pickling treatment of stainless steel.

Figure P1020120075899

Description

TECHNICAL FIELD [0001] The present invention relates to a pickling solution treatment apparatus for preventing bubbles and a pickling solution treatment method using the same,

The present invention relates to a pickling solution treatment apparatus and a pickling solution treatment method using the pickling solution, and more particularly, to a pickling solution treatment apparatus which precludes bubble generation of a pickling solution to precisely analyze the concentration and the like of a pickling solution and a pickling solution treatment method .

The annealing process of stainless steel is carried out by immersing the stainless steel in a tank containing sulfuric acid, nitric acid, mixed acid, and the like. In the annealing and pickling process of stainless steel, different solutions are used depending on the type of stainless steel. In the case of 300 series stainless steel, the oxide scale formed on the surface of the stainless steel is removed through a step of passing through sulfuric acid, water, In the case of stainless steel, sulfur oxide, nitric acid, and water tank are used to remove the oxide scale and the pickling process.

Among them, a mixed tank is used in the pickling process of the 300 series stainless steel, which is formed by mixing hydrofluoric acid, nitric acid, and iron with water. This pickling solution is used to peel off the stainless steel surface oxide scale.

Here, the oxide scale is generated on the surface of the stainless steel in the process of removing the stress generated during the hot rolling in the continuous annealing process and applying the heat and mechanical properties to the stainless steel, To obtain good surface quality of stainless steel and to impart corrosion resistance.

However, in the annealing and pickling step, the oxide scale peeled off by the pickling solution changes into sludge, causing the pickling solution to become turbid, accumulating in the pickling solution storage tank to block the pickling solution supply line, and blocking various valves and piping.

Referring to FIG. 1, the concentration of sulfuric acid and nitric acid in the pickling solution is determined by bypassing the pickling solution online to check whether the concentration of the pickling solution used in the annealing pickling process of stainless steel is appropriate. It is measured and discharged to the discharge tank (7). This has a significant impact on product quality and requires constant monitoring.

However, the temperature of the pickling solution after the surface treatment of the stainless steel is increased by the temperature of the stainless steel or the process temperature in the circulating process of the pickling solution. And as the temperature rises, the solubility of the pickling solution is lowered, which causes bubbles (B) in the analyzer (4).

Bubble generation in the analyzer (4) not only prevents the accurate concentration analysis of the pickling solution, but also makes it impossible to accurately determine the time of the waste pickling process, thus increasing the cost by unnecessary waste acid treatment of the still available pickling solution. Alternatively, the pickling solution that needs to be treated with waste acid may be deteriorated, causing surface quality degradation of stainless steel.

The present invention has been proposed to solve the above problems, and provides an apparatus and method configured to precisely measure the concentration of the pickling solution by blocking the generation of bubbles in the pickling solution used for pickling treatment of stainless steel. .

In order to accomplish the above object, an embodiment of the present invention provides a pickling solution processing apparatus and a pickling solution processing method using the same.

In one embodiment of the pickling solution processing apparatus of the present invention is installed between the pickling solution collection area and the pickling solution analysis unit, and is connected to the storage base and the storage base provided to temporarily store the pickling solution, the bubble generation of the pickling solution It may include a bubble generating blocking means provided to block.

In one embodiment, the bubble generating blocking means is connected to the storage base, it may include a pressurizing portion provided to block the generation of the pickling solution by pressing the inside of the storage base.

In one embodiment, the bubble generation blocking means may be installed between the storage base and the pickling solution analysis unit, and may further include a cooling unit provided to block the generation of bubbles by cooling the pickling solution.

In one embodiment, the bubble generation blocking means is installed surrounding the storage base and the pickling solution analysis unit, the storage base and the pickling solution analysis unit may further include a heat insulating member provided to block heat exchange with the outside. have.

In one embodiment, the bubble generation blocking means is connected to the heat insulating member, to form a cooling atmosphere inside the heat insulating member to lower the temperature of the storage base and the pickling solution analyzer to block the generation of bubbles in the pickling solution. It may further include a second cooling unit provided.

In one embodiment of the present invention pickling solution processing step to temporarily store the pickling solution and the pressure of the temporarily stored pickling solution or bubble to block the generation of bubbles to block the generation of bubbles and to analyze the pickling solution is blocked bubble generation It may include a step.

In one embodiment, the bubble generation blocking step may further include blocking the generation of bubbles in the pickling solution by insulating the peripheral portion of the pickling solution and creating a cooling atmosphere.

One embodiment of the pickling solution treatment apparatus and the pickling solution treatment method using the pickling solution of the present invention has the effect of blocking the generation of bubbles by increasing the solubility of the pickling solution as the pickling solution is temporarily pressurized inside the storage container body.

In addition, the cooling unit is provided between the storage base and the pickling solution analysis unit, so that the pickling solution is cooled from the storage base to the pickling solution analysis unit by indirect heat exchange between flows, thereby increasing the solubility of the pickling solution to block bubbles from being generated.

In addition, a heat insulating member and a second cooling unit surrounding the entire storage base and the pickling solution analyzing unit are provided to form a cooling atmosphere in the heat insulating member in a state in which heat exchange with the outside is blocked, so that the pickling solution is carried on the entire movement path of the pickling solution. Cooling to increase the solubility, thereby preventing the generation of bubbles.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view of a conventional pickling solution processing apparatus. FIG.
2 is a configuration diagram of a pickling solution treatment apparatus of the present invention.
FIG. 3A is a view showing a state where bubbles are generated when the pickling solution is collected in the pickling solution collecting area and then temporarily stored in the storage container main body.
3B is a view showing a state in which the pickling solution is pressurized or cooled to block bubble generation by increasing the solubility of the pickling solution in the invention shown in FIG. 3A.

Hereinafter, a pickling solution treatment apparatus and a pickling solution treatment method using the pickling solution treatment apparatus according to embodiments of the present invention will be described in detail in order to facilitate understanding of the features of the present invention.

In order to help the understanding of the embodiments described below, in the reference numerals described in the accompanying drawings, among the components that will perform the same function in each embodiment, the related components are denoted by the same or extension numerals.

The embodiments related to the present invention are basically based on that the generation of bubbles is blocked in a pickling solution used in the pickling treatment of stainless steel so that the concentration of the pickling solution or the like can be precisely measured.

Hereinafter, a specific embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a configuration diagram of a pickling solution treatment apparatus of the present invention.

Referring to Figure 2, the configuration of an embodiment of the pickling solution processing apparatus of the present invention is installed between the pickling solution collection area and the pickling solution analysis unit 10, the storage base 20 to provide temporary storage of pickling solution and It may be associated with the storage base 20, and may include a bubble generation blocking means 30 provided to block the generation of bubbles in the pickling solution.

First, the pickling solution collection area may be a storage tank in which the pickling solution is stored or a pipe through which the pickling solution flows. In particular, in the case of annealing pickling process of stainless steel, the pickling solution collection area may be a storage tank of pickling solution or the main pipe 2 through which the pickling solution flows. Hereinafter, the pickling solution collecting region will be described as being limited to the main pipe 2 through which the pickling solution flows, but the scope of application of the present invention is not limited thereto.

The pickling solution analyzing unit 10 serves to analyze the concentration of the pickling solution and the like. In particular, in the case of the annealing pickling process of stainless steel, the pickling solution concentration is analyzed. At this time, the pickling solution may be a sulfuric acid solution, nitric acid solution or mixed acid solution, if the mixed acid solution is to measure the concentration of hydrofluoric acid, nitric acid, iron.

The main body 20 is connected to the main pipe 2 through a bypass pipe 82. A bypass valve (81) is mounted on the bypass pipe (82), so that the amount of the pickling solution can be adjusted.

In addition, the storage base 20 is connected to the pickling solution analysis unit 10 and the pickling solution supply pipe 84, the pickling solution temporarily stored in the storage base 20, the pickling solution analysis unit ( 10). At this time, the first flow rate control valve 83 is mounted on the pickling solution supply pipe 84 to adjust the flow rate of the pickling solution flowing upstream of the pickling solution analyzing unit 10.

The downstream side of the pickling solution analyzing unit 10 is connected to the pickling solution discharging unit 87 by the pickling solution discharge pipe 86. When the concentration of the pickling solution supplied from the storage container main body 20 is analyzed , And the pickling solution used in the analysis is discharged to the pickling solution discharging portion 87. The second flow control valve 85 is also mounted on the pickling solution discharge pipe 86, and is closed during the analysis of the concentration of the pickling solution, and is opened after the analysis to allow the pickling solution to be discharged. You decide.

On the other hand, the temperature of the pickling solution is increased by the temperature of the stainless steel after the surface treatment of the stainless steel or the process temperature in the circulating process of the pickling solution. At this time, , Which interferes with the analysis of the concentration and the like in the pickling solution analyzer 10.

Therefore, the bubble generating and blocking means 30 is connected to the storage container main body 20 and functions to block the bubble generation of the pickling solution in the pickling solution analyzing unit 10. [

The bubble generation blocking means 30 is connected to the storage container main body 20 and includes a pressing portion 40 provided to press the inside of the storage container main body 20 to block the bubble formation of the pickling solution .

Here, the pressurizing portion 40 is connected to the upper end of the storage base 20, supplying air to the storage base 20 to supply air to apply a pneumatic pressure to the pickling solution filled in the storage base 20 It may be wealth. That is, the pressurizing part 40 is provided on the air supply pipe 43 and the air supply pipe 43 connected to the upper end of the air storage tank 41 and the air storage tank 41 and the storage base 20. It may be configured to include a third flow control valve 45 which is installed in and controls the amount of air supplied to the storage base 20.

When pneumatic pressure is applied to the pickling solution filled in the storage container body 20 through the pressing part 40, the internal pressure of the storage container body 20 is increased and the solubility of the pickling solution is increased. The evaporation of the pickling solution evaporates the bubbles.

The pushing unit 40 pushes the pickling solution stored in the storage container body 20 to the pickling solution analyzing unit 10 and guides the pickling solution to the pickling solution analyzing unit 10 at the downstream side of the pickling solution analyzing unit 10 The orifice 90 may be mounted on the connected pickling solution discharge pipe 86 such that the internal pressure of the pickling solution analyzing unit 10 is kept constant during the analysis of the concentration of the pickling solution or the like.

Next, the bubble generation blocking means 30 is installed between the base for storage 20 and the pickling solution analysis unit 10 and is provided to cool the pickling solution to block the generation of bubbles. It may be configured to include more.

Specifically, the cooling unit 50 may be installed in connection with the pickling solution supply pipe 84 connecting the storage vessel main body 20 and the pickling solution analysis unit 10. That is, the cooling unit 50 is connected to the heat exchanger 55 and the heat exchanger 55 mounted on the pickling solution supply pipe 84 to cool the cooling water and to supply the heat exchanger 55 again. It may be configured to include a cooling tower 51.

The pickling solution flowing from the storage vessel main body 20 to the pickling solution analyzer 10 through the pickling solution supply pipe 84 is heat-absorbed by the heat exchanger 55 in an indirect heat exchange manner with the cooling water And is already cooled when the transfer to the pickling solution analysis part 10 is completed, so that the solubility of the pickling solution increases and the generation of bubbles becomes low.

Next, the bubble generation blocking means 30 is installed to surround the storage base 20 and the pickling solution analysis unit 10, and the storage base 20 and the pickling solution analysis unit 10 are installed. It may further include a heat insulating member 60 provided to block heat exchange with the outside.

When the heat exchange between the storage base 20 and the pickling solution analysis unit 10 is blocked by the heat insulating member 60, especially in the steel mill is not affected by high temperatures in the process, The storage base 20 and the pickling solution analyzing unit 10 can more easily control the generation of bubbles in the pickling solution.

That is, since it is less affected by the external temperature, by applying pneumatic pressure to the pickling solution filled in the storage base 20 as described above or by cooling the pickling solution flowing on the pickling solution supply pipe 84 with cooling water, It is more efficient to block bubble generation.

Here, the bubble generation blocking means 30 is connected to the heat insulating member 60 in order to increase the heat insulating effect, and by forming a cooling atmosphere inside the heat insulating member 60, the storage base 20 and the The temperature of the pickling solution analyzer 10 may be lowered to further include a second cooling unit 70 provided to block the generation of bubbles in the pickling solution.

The second cooling unit 70 supplies a cooling fluid such as cold air to the inside of the heat insulating member 60 to form a cooling atmosphere in the storage base 20 and the pickling solution analyzer 10. Overall, it is possible to reduce the occurrence of bubbles in the circulation of the pickling solution.

As described above, the bubble generation blocking means 30 pressurizes the pickling solution or cools the pickling solution, thereby increasing the solubility of the pickling solution to block the generation of bubbles.

The configuration of an embodiment of the present invention is as described above, and an operation method will be described below.

Figure 3a is a view showing a state in which bubbles are generated when temporarily storing the pickling solution in the pickling solution collection area in the pickling solution collection area, Figure 3b is a bubble generated by increasing the solubility of the pickling solution in the invention shown in Figure 3a The state in which the pickling solution is pressurized or cooled to cut off is shown.

3A and 3B, the structure of one embodiment of the pickling solution processing method of the present invention includes a storage step of temporarily storing a pickling solution, a bubble generation blocking step of blocking the bubble generation of the temporarily stored pickling solution, And analyzing the pickling solution.

First, the operator opens the bypass valve 81 so that the pickling solution can be bypassed through the bypass pipe 82 connected to the main pipe 2 through which the pickling solution flows. When the bypass pipe 82 is opened, the pickling solution gradually fills the storage container body 20. At this time, the pickling solution forms a high temperature, which lowers the solubility of the pickling solution and generates bubbles.

The operator operates the pressing unit 40 connected to the storage container body 20 to block bubbling of the pickling solution. The pressurization part 40 is operated, and first, the third flow control valve 45 is opened and the air is supplied from the air storage tank 41 to the storage base 20 through the air supply pipe 43. It will flow in.

The air introduced into the storage container main body 20 applies pneumatic pressure to the pickling solution filled in the storage container main body 20. Accordingly, the solubility of the pickling solution becomes higher as the internal pressure of the storage vessel body 20 increases, and the bubble generation phenomenon is reduced in the pickling solution. That is, the bubble generation blocking step includes a pressurization step of pressurizing the pickling solution temporarily stored in the storage container body 20 to block the bubble formation of the pickling solution.

Next, the pressurizing unit 40 also serves to guide the pickling solution stored in the storage container body 20 toward the pickling solution analyzer 10. At this time, the bypass valve 81 is closed and the first flow control valve 83 is opened, and the pickling solution flows into the pickling solution analysis part 10 through the pickling solution supply pipe 84 .

The pickling solution is subjected to a cooling step while passing through the pickling solution supply pipe 84. That is, the pickling solution supply pipe 84 is equipped with the heat exchanger 55, and the pickling solution passes through the pickling solution supply pipe 84 and is cooled through indirect heat exchange with the cooling water in the heat exchanger 55 do. At this time, the temperature of the pickling solution is lowered, so that the solubility of the pickling solution is increased and the bubble generation is reduced.

The bubble generation blocking step may further include a second cooling step for blocking the bubble formation of the pickling solution by inserting a peripheral portion of the pickling solution and forming a cooling atmosphere.

That is, the storage vessel main body 20 and the pickling solution analyzing unit 10 are surrounded by the heat insulating member 60, so that heat exchange between the storage container body 20 and the pickled solution analyzing unit 10, The cooling unit 70 supplies cooling fluid such as cold air to the inside of the heat insulating member 60.

At this time, since most of the circulation path of the pickling solution, including the storage base 20 and the pickling solution analysis unit 10, is exposed to the cooling atmosphere, the temperature of the pickling solution decreases during the entire circulation. As a result, the solubility of the pickling solution is further increased, and the bubble generation phenomenon is reduced.

The pickling solution, in which bubble generation is blocked, is finished in the pickling solution analyzing unit 10, and the pickling solution is discharged through the pickling solution discharge pipe 86 according to the opening of the second flow control valve 85. The discharge part 87 is discharged to finish the analysis of the concentration of the pickling solution.

The present invention is expected to provide an effect of precisely measuring the concentration and the like of the pickling solution by blocking the generation of bubbles in a pickling solution or the like used for the pickling treatment of stainless steel through the above-described composition and operating method.

The above matters are merely specific examples of the pickling solution treatment apparatus and the pickling solution treatment method using the pickling solution treatment apparatus.

Therefore, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. do.

10 pickling solution analysis part 20 ... storage container body
30 ... bubble generation blocking means 40 ... pressing portion
50 ... cooling section 60 ... heat insulating member
70 ... second cooling section 90 ... orifice

Claims (7)

A storage base 20 installed between the pickling solution collection area and the pickling solution analyzing unit 10 and temporarily storing the pickling solution; And
Bubble generation block means 30 is associated with the storage base 20, provided to block the generation of bubbles in the pickling solution;
Pickling solution processing apparatus comprising a.
The method of claim 1,
The bubble generation blocking means 30 is connected to the storage body 20, and pressurizing the inside of the storage body 20 includes a pressurizing portion 40 provided to block the generation of bubbles in the pickling solution. Pickling solution processing apparatus, characterized in that.
3. The method according to claim 1 or 2,
The bubble generation blocking means 30 is installed between the storage base 20 and the pickling solution analysis unit 10, and further provides a cooling unit 50 provided to block the generation of bubbles by cooling the pickling solution. Pickling solution processing apparatus comprising a.
The method of claim 3,
The bubble generation blocking means 30 is installed surrounding the storage base 20 and the pickling solution analyzing unit 10, and the storage base 20 and the pickling solution analyzing unit 10 are externally connected. Pickling solution processing apparatus, characterized in that it further comprises a heat insulating member (60) provided to block the heat exchange.
5. The method of claim 4,
The bubble generation blocking means 30 is connected to the heat insulating member 60, and forms a cooling atmosphere inside the heat insulating member 60 to form the storage base 20 and the pickling solution analyzing unit 10. Pickling solution processing apparatus, characterized in that it further comprises a second cooling unit (70) provided to block the generation of the pickling solution by lowering the temperature of.
A storage step of temporarily storing the pickling solution;
Bubble generation blocking step of blocking the bubble generation by pressing or cooling the temporarily stored pickling solution; And
Analyzing the pickling solution in which bubble generation is blocked;
≪ / RTI >
The method according to claim 6,
The bubble generation block step, the pickling solution processing method further comprises the step of blocking the generation of the pickling solution by insulating the peripheral portion of the pickling solution and creating a cooling atmosphere.
KR1020120075899A 2012-07-12 2012-07-12 Apparatus for processing acid cleaning liquid type of preventing bubble generation and method having the same KR101406473B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120075899A KR101406473B1 (en) 2012-07-12 2012-07-12 Apparatus for processing acid cleaning liquid type of preventing bubble generation and method having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120075899A KR101406473B1 (en) 2012-07-12 2012-07-12 Apparatus for processing acid cleaning liquid type of preventing bubble generation and method having the same

Publications (2)

Publication Number Publication Date
KR20140009645A true KR20140009645A (en) 2014-01-23
KR101406473B1 KR101406473B1 (en) 2014-06-12

Family

ID=50142689

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120075899A KR101406473B1 (en) 2012-07-12 2012-07-12 Apparatus for processing acid cleaning liquid type of preventing bubble generation and method having the same

Country Status (1)

Country Link
KR (1) KR101406473B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021067066A1 (en) * 2019-10-01 2021-04-08 Elemental Scientific, Inc. Automated inline preparation and degassing of volatile samples for inline analysis

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100768320B1 (en) 2001-12-20 2007-10-17 주식회사 포스코 Absorption oil flow regulating orifice cleaning apparatus
KR100456466B1 (en) 2002-08-30 2004-11-10 주식회사 포스코 An apparatus for removing the foam in cleaning line of strip
KR101060815B1 (en) 2008-12-26 2011-08-30 주식회사 포스코 Apparatus and method for continuously measuring acid concentration of pickling solution
KR101641736B1 (en) * 2009-12-23 2016-07-21 주식회사 포스코 Automatic measuring apparatus and method of concentration mixed acid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021067066A1 (en) * 2019-10-01 2021-04-08 Elemental Scientific, Inc. Automated inline preparation and degassing of volatile samples for inline analysis
US11315776B2 (en) 2019-10-01 2022-04-26 Elemental Scientific, Inc. Automated inline preparation and degassing of volatile samples for inline analysis
US11615949B2 (en) 2019-10-01 2023-03-28 Elemental Scientific, Inc. Automated inline preparation and degassing of volatile samples for inline analysis

Also Published As

Publication number Publication date
KR101406473B1 (en) 2014-06-12

Similar Documents

Publication Publication Date Title
CN105143753B (en) Method and apparatus for providing from supercooling cryogenic liquid at least one machining station
CN105135412A (en) Unit cleaning technology of supercritical boiler
CN114088503A (en) Method for verifying accuracy of secondary cooling solidification model
CN102877081A (en) Pre-pickling acid liquor circulation system and method for hot-rolled stainless steel strip steel
KR101406473B1 (en) Apparatus for processing acid cleaning liquid type of preventing bubble generation and method having the same
Xu et al. Influence of pressure and surface roughness on the heat transfer efficiency during water spray quenching of 6082 aluminum alloy
CN101100755B (en) Acid pickling method of copper pipe for automobile oil cooler
CN102787223B (en) Metal material end surface quenching test machine
Liu et al. Experimental study and calculation of boiling heat transfer on steel plates during runout table operation
CN105521973B (en) The cleaning method of laser cooler bin and its detection method of cleanliness factor
KR101641736B1 (en) Automatic measuring apparatus and method of concentration mixed acid
CN203811572U (en) Online corrosion rate electrochemical monitor system for copper wire bar of generator
JP2006231197A (en) Water quality control method based on heater drain iron concentration
US8499996B2 (en) Method for the quantitative determination of soldering agent residues
CN205785862U (en) A kind of warm air radiator performance testing device
EP2503028B1 (en) Application of treatment fluids to components
US20120241008A1 (en) Application of treatment fluids to components
CN102269668B (en) Testing method for performing rapid water quenching on compression test sample
CN112226779A (en) Chemical cleaning system and method for two loops of high-temperature gas cooled reactor nuclear power unit
JP2013009642A (en) Retort apparatus
DE19758301C1 (en) Method for thermally reducing dissolved gases in stored hot water from boiler
JP5024781B2 (en) Carbon dioxide supercritical filling equipment
CN113843206A (en) Chemical cleaning system and method for high-temperature high-pressure experimental device
JP2011225945A (en) Method of and device for heat treatment of stainless steel pipe
CN213538110U (en) Chemical cleaning system for two loops of high-temperature gas cooled reactor nuclear power unit

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20170605

Year of fee payment: 4