CN106702398A - Anti-corrosive acid washing method for steel pipe - Google Patents
Anti-corrosive acid washing method for steel pipe Download PDFInfo
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- CN106702398A CN106702398A CN201710159014.1A CN201710159014A CN106702398A CN 106702398 A CN106702398 A CN 106702398A CN 201710159014 A CN201710159014 A CN 201710159014A CN 106702398 A CN106702398 A CN 106702398A
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- steel pipe
- water
- acid washing
- purified water
- treatment
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- 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
-
- 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
- C23G3/04—Apparatus for cleaning or pickling metallic material for cleaning pipes
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- 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 invention provides an anti-corrosive acid washing method for a steel pipe. The anti-corrosive acid washing method comprises the following steps: step 1, carrying out purification treatment on running water to prepare purified water, and then dividing the purified water into two paths and supplying the purified water to an acid washing solution preparation device and a water washing chamber; step 2, compounding the purified water and the raw acid washing solution in a certain ratio in the acid washing solution preparation device to prepare an acid washing solution, and then supplying the acid washing solution to an acid washing chamber; step 3, spraying the acid washing solution on the outer surface of the steel pipe to carry out acid washing treatment in the acid washing chamber, then conveying the steel pipe into the water washing chamber, and carrying out washing treatment on the steel pipe by virtue of the purified water in the water washing chamber; step 4, carrying out air-drying treatment on the washed steel pipe to keep the surface of the steel pipe dry; and step 5, recovering the waste water generated by washing the surface of the steel pipe in the step 3, carrying out neutralization treatment on the recovered waste water, and re-entering the step 1 of purified water preparation. According to the anti-corrosive acid washing method provided by the invention, the waste water generated by washing the surface of the steel pipe subjected to acid washing is recovered, so that the utilization rate of water resources is greatly increased.
Description
Technical field
The present invention relates to steel pipe processing method, particularly a kind of steel pipe corrosion-proof acid washing method.
Background technology
As the deep development and pipeline corrosion protection quality of pipeline corrosion protection technique are constantly lifted, to meet the need of users at home and abroad
Ask, to the outer surface of steel tube pickling in online, continuous, rotary transfer motion, with the problem for being badly in need of solving as pipeline corrosion protection industry,
Because steel pipe corrosion-proof production line does not have qualified acid cleaning process flow to cause steel pipe reduction of service life.
The outer surface of steel tube acid cleaning process in online, continuous, rotary transfer motion domestic at present is in the blank phase, existing
The waste water that some acid cleaning process are produced in acid cleaning process is slightly just emitted through treatment, the dirt of waste and environment for water resource
Dye is very unfavorable, on the premise of pickling qualification rate is improved, effectively administers pickling sewage, and recycle, it is to avoid money
The waste in source.
The content of the invention
A kind of weak point it is an object of the invention to overcome existing conventional art, there is provided steel pipe corrosion-proof acid washing method.
The purpose of the present invention is reached by following technical measures：
A kind of steel pipe corrosion-proof acid washing method, comprises the following steps successively：
Step one, purified treatment is carried out to running water, purified water is obtained, purified water is then divided into two-way and is supplied to pickling
Liquid configuration device and washing room；
Step 2, in pickle configuration device purified water and pickling stoste are compounded by a certain percentage, pickle are obtained,
Then pickle is supplied to pickling room；
Step 3, the outer surface spray acid washing lotion to steel pipe in pickling room carry out pickling processes, then send into steel pipe
Washing room, treatment is rinsed to steel pipe indoor purified water is washed；
Step 4, to the steel pipe after flushing carry out air-dry treatment, make the dry tack free of steel pipe；
Produced waste water is rinsed in step 5, recycling step three to steel tube surface, and the waste water after recovery is entered
After row neutralisation treatment, the purified water for reentering step one makes.
As further improvement：The step one also includes, is supplied after obtained purified water is heated to acid
Washing lotion configuration device, and supply to the purified water of pickle configuration device is pure water.
As further improvement：The purified treatment includes, running water is carried out successively sand filtration, carbon consider, cartridge filter
Filtering, the filtering of one-level RO systems, two grades of RO systems filterings；Room is extremely washed in the supply and the purified water of pickle configuration device is
Obtained pure water after two grades of RO systems filterings.
As further improvement：The waste water produced after the filtering of one-level RO systems carries out qualified discharge after wastewater treatment, two grades
The waste water produced after the filtering of RO systems enters raw water groove, and carries out purified treatment again for making the purified water.
As further improvement：It is described to heat as purified water is heated between 40 DEG C -75 DEG C by heater.
As further improvement：The step 3 also includes, absorbs the acid mist produced in pickling room, and carry out at purification
Reason.
As further improvement：Pickling processes are in the step 3, and pickle even application is existed by fan nozzle
Online, the outer surface of steel tube in continuous rotary transfer motion.
As further improvement：Rinsed in the step 3 and be processed as, purified water even application is existed by fan nozzle
Online, the outer surface of steel tube in continuous rotary transfer motion, washes pickling residue.
As further improvement：Described air-drying is processed as, by the blower fan of adjustable hot blast to steel pipe air blast, the blower fan
Wind-force is between 0.5MPa-0.8MPa.
By adopting the above-described technical solution, compared with prior art, it is an advantage of the invention that：Whole set process flow can be with
Realize that pickle uniformly sprays the outer surface of steel tube in online, continuous, rotary transfer motion, the acid cleaning of steel tube liquid in motion
Time >=30 second of steel pipe table can be attached to, by washing, then air-dried technological process substantially increases the conjunction of acid cleaning of steel tube
Lattice rate, it is critical only that the waste water produced by being washed to the steel tube surface after pickling, after Waste Water Treatment is processed, will
Have about 70% water from new reuse, 30% water by deliver neutralize medicament after reach discharge standard and discharge again, allow running water to make
It is make-up water source, the water after flushing is recycled by treatment, greatly improves the utilization rate of water resource, is successfully applied to
To the steel pipe corrosion-proof production line in online, continuous, rotary transfer motion.
The invention will be further described with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Accompanying drawing 1 is a kind of steel pipe corrosion-proof acid washing method block schematic illustration of the invention.
Specific embodiment
Embodiment 1：As shown in figure 1, a kind of steel pipe corrosion-proof acid washing method, comprises the following steps successively：
Step one, purified treatment is carried out to running water, purified water is obtained, purified water is then divided into two-way and is supplied to pickling
Liquid configuration device and washing room；
Step 2, in pickle configuration device purified water and pickling stoste are compounded by a certain percentage, pickle are obtained,
Then pickle is supplied to pickling room；
Step 3, the outer surface spray acid washing lotion to steel pipe in pickling room carry out pickling processes, then send into steel pipe
Washing room, treatment is rinsed to steel pipe indoor purified water is washed；
Step 4, to the steel pipe after flushing carry out air-dry treatment, make the dry tack free of steel pipe；
Produced waste water is rinsed in step 5, recycling step three to steel tube surface, and the waste water after recovery is entered
After row neutralisation treatment, the purified water for step one makes.
Purified water is pure water in the step one, and specific manufacturing process is：Original tap water is injected into the storage of raw water groove, by
Raw water pump injects water into sand filtration carbon filtration and cartridge filter carries out primary filter, and the good water of primary filter is by one-level high-pressure pump
Pressurization injects water into one-level RO systems and carries out intermediate filtering, and the water that middle rank has been filtered temporarily is deposited by intermediate water tank, then by
Two grades of RO systems final filtrations are into pure water；Pure water when in use, first pass through heater be heated to 40 DEG C -75 DEG C between and insulation
Pure water groove is kept in, the pure water of pure water groove is injected into washing room or pickle configuration case by high-pressure hydraulic pump during with water, specifically,
The pure water of the heater heating is divided to two branch roads, wherein a supply washing room, another supply pickle configures case to be used for
Configuration pickle.
Pickle configuration in step 2, supply process are specially：Pickle stoste is pre-stored in pickle stoste and deposits
In storage tank, when pickle is configured, pickle and pure water are mixed in pickle configuration case, and be configured to the acid of normal concentration
Washing lotion, the pickle for having configured is placed on the holding tank storage of configuration pickle, and pickling is injected into by pickling fluid supply pump when using
Room is used for the pickling of steel pipe.
The pickling of the step 3 kind and water-washing process are specially：Steel pipe first passes around pickling room and carries out the acid of >=30 seconds
Wash, the steel pipe after pickling is rinsed well by washing room, again air-dries steel pipe by hurricane drier after washing.
The air drying process of the step 4 is specially：Natural wind is sucked and wind-force is brought up into 0.7MPa by blower fan, then is led to
Adjustable hot air apparatus is crossed by wind regulation to suitable temperature, then by wind be sent to hurricane drier for air-dry wash after steel pipe.
Also include one-level RO filtered wastewater processing procedures in described pure water manufacturing process：The one-level RO systems are filtered out
Discharge of wastewater to waste water collection tank, water extraction is raised to by elevator pump return exceeded suspension that three grooves are removed in waste water and
Heavy metal in waste water, then filtered by microfiltration membrane system, the water for having filtered is injected into neutralization chamber and is neutralized, and wastewater treatment is closed
Lattice are discharged after reaching discharge, and the settled sludge returned in three headers is pumped by sludge press filtration to be filtered, then will by sludge dewatering equipment
Water and mud depart from, and the outer disposal of sludge committee is carried out after treatment is qualified, and the waste water that two grades of RO systems are filtered out again returns to original
The further circulating filtration of water tank is utilized.
The acid cleaning process also includes pickling atomization purification discharge process：Atomization is produced during the pickling room pickling steel pipe
Pickle is purified by sharing acid mist purifying device, is discharged by blower fan after purification is up to standard.
The water-washing process also includes washing waste water processing procedure：The waste water produced after the washing room washing is useless by washing
Water collecting groove is collected, then is injected into adjustment tank by waste water pump, NaOH is added in adjustment tank is to waste water and is neutralized, and is neutralized
Water after qualified is re-injected into raw water groove and is circulated to use.
Pure water manufacture to reach and be heated to the dissolving acid changed between 40 DEG C -75 DEG C by heater after criterion of acceptability
Washing lotion and the configuration for pickle.
The blower fan of the hurricane drier is adjustable hot blast, and the temperature of wind is entered trip temperature and adjusted with the steel pipe humidity after washing,
The wind-force of the blower fan be 0.5MPa-0.8MPa between, to improve air-dried efficiency.
A kind of outer surface of steel tube during pickler is online, continuous, rotary transfer is moved carries out pickling, including pickling
Room, washing room, hurricane drier, the pickling room is the first step of steel pipe corrosion-proof pickling, and the steel pipe first passes around pickling room, by institute
State pickle configuration feedway pickle is transported into pickling room to carry out the pickling of steel pipe, the steel pipe being acid washed is again by described
Washing room washes attachment and pickle on steel pipe, and the steel pipe after the washing is air-dried on steel pipe by the hurricane drier again
Attached water.
Claims (9)
1. a kind of steel pipe corrosion-proof acid washing method, it is characterised in that：Comprise the following steps：
Step one, purified treatment is carried out to running water, purified water is obtained, purified water is then divided into two-way supplied to pickle and match somebody with somebody
Put device and washing room；
Step 2, in pickle configuration device purified water and pickling stoste are compounded by a certain percentage, pickle is obtained, then
Pickle is supplied to pickling room；
Step 3, the outer surface spray acid washing lotion to steel pipe in pickling room carry out pickling processes, then send into steel pipe and wash
Room, treatment is rinsed to steel pipe indoor purified water is washed；
Step 4, to the steel pipe after flushing carry out air-dry treatment, make the dry tack free of steel pipe；
It is rinsed produced waste water in step 5, recycling step three to steel tube surface, and the waste water after recovery is carried out
After treatment, the purified water for reentering step one makes.
2. a kind of steel pipe corrosion-proof acid washing method according to claim 1, it is characterised in that：The step one also includes, incites somebody to action
Obtained purified water is supplied to pickle configuration device after being heated, and is supplied to the purified water of pickle configuration device
It is pure water.
3. a kind of steel pipe corrosion-proof acid washing method according to claim 2, it is characterised in that：The purified treatment includes, according to
Secondary water and running water to after neutralisation treatment in step 5 carries out sand filtration, carbon worry, cartridge filter filtering, one-level RO system mistakes
Filter, two grades of RO systems filterings；After the supply is filtered to the purified water of washing room and pickle configuration device for two grades of RO systems
Obtained pure water.
4. a kind of steel pipe corrosion-proof acid washing method according to claim 3, it is characterised in that：Produced after the filtering of one-level RO systems
Waste water carry out qualified discharge after wastewater treatment, the waste water produced after two grades of RO systems filterings enters raw water groove, and carries out again
Purified treatment is used to make the purified water.
5. a kind of steel pipe corrosion-proof acid washing method according to claim 2, it is characterised in that：Described heating is purified water
It is heated between 40 DEG C -75 DEG C by heater.
6. a kind of steel pipe corrosion-proof acid washing method according to claim 1, it is characterised in that：The step 3 also includes, inhales
The acid mist produced in pickling room is received, and carries out purified treatment.
7. a kind of steel pipe corrosion-proof acid washing method according to claim 1, it is characterised in that：Pickling processes in the step 3
For the outer surface of steel tube by fan nozzle by pickle even application in online, continuous rotary transfer is moved.
8. a kind of steel pipe corrosion-proof acid washing method according to claim 1, it is characterised in that：Flushing treatment in the step 3
For the outer surface of steel tube by fan nozzle by purified water even application in online, continuous rotary transfer is moved washes acid
Wash residue.
9. a kind of steel pipe corrosion-proof acid washing method according to claim 1, it is characterised in that：Described air-drying is processed as, and passes through
, to steel pipe air blast, the wind-force of the blower fan is between 0.5MPa-0.8MPa for the blower fan of adjustable hot blast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159014.1A CN106702398B (en) | 2017-03-17 | 2017-03-17 | A kind of steel pipe corrosion-proof acid washing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159014.1A CN106702398B (en) | 2017-03-17 | 2017-03-17 | A kind of steel pipe corrosion-proof acid washing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106702398A true CN106702398A (en) | 2017-05-24 |
| CN106702398B CN106702398B (en) | 2019-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710159014.1A Active CN106702398B (en) | 2017-03-17 | 2017-03-17 | A kind of steel pipe corrosion-proof acid washing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107164770A (en) * | 2017-05-31 | 2017-09-15 | 海盐建盛五金制品有限公司 | A kind of metal wire rod pretreating device and its production technology |
| CN112276484A (en) * | 2020-09-30 | 2021-01-29 | 无锡市力达金属制品有限公司 | Processing technology of material battery steel shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112276484A (en) * | 2020-09-30 | 2021-01-29 | 无锡市力达金属制品有限公司 | Processing technology of material battery steel shell |
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| Publication number | Publication date |
|---|---|
| CN106702398B (en) | 2019-10-29 |
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