CN106929165A - A kind of cleaning agent and cleaning method for being applied to hot rolling sewage circulating high rate filter - Google Patents
A kind of cleaning agent and cleaning method for being applied to hot rolling sewage circulating high rate filter Download PDFInfo
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- CN106929165A CN106929165A CN201710124095.1A CN201710124095A CN106929165A CN 106929165 A CN106929165 A CN 106929165A CN 201710124095 A CN201710124095 A CN 201710124095A CN 106929165 A CN106929165 A CN 106929165A
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- high rate
- filter
- cleaning
- backwash
- hot rolling
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- 238000004140 cleaning Methods 0.000 title claims abstract description 40
- 239000012459 cleaning agent Substances 0.000 title claims abstract description 28
- 238000005098 hot rolling Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000010865 sewage Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000706 filtrate Substances 0.000 claims abstract description 35
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 239000003513 alkali Substances 0.000 claims abstract description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 7
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 6
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 claims abstract description 5
- 229940070765 laurate Drugs 0.000 claims abstract description 5
- 238000011010 flushing procedure Methods 0.000 claims abstract description 4
- 230000007306 turnover Effects 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000003204 osmotic effect Effects 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000731961 Juncaceae Species 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000013527 degreasing agent Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/04—Carboxylic acids or salts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/688—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with backwash arms or shoes acting on the cake side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/08—Silicates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/10—Carbonates ; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2068—Ethers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/30—Amines; Substituted amines ; Quaternized amines
Abstract
The present invention discloses a kind of cleaning agent and cleaning method for being applied to hot rolling sewage circulating high rate filter, and the cleaning agent weight percent content is：Na2CO39%~11%, waterglass 0.8%~1.2%, triethanolamine 3.6%~4.1%, butyl cellosolve 1.5%~1.8%, laurate 4.5%~5.0%, balance of water；Under high rate filter stoppage in transit state, filter backwash emptying valve is opened, manhole in opening after ventilation, is goed deep into mud layer with feeler lever, checks filtrate situation and greasy filth thickness；Close lower draining and leach penstock, open filter influent or backwash inlet valve, control liquid level；Sequentially add piece alkali and cleaning agent；Ventilation is soaked more than 12 hours, and adjustment backwash turnover water balance, ventilation carries out steam and combines flushing, and observation backwash water outlet is untill backwash water outlet becomes clear.The cleaning agent provided in the present invention under high pH conditions, there is good demulsification peptizaiton；This cleaning method can effectively decompose greasy filth and emulsified fat in filter, loose filtrate, it is ensured that high rate filter filter effect.
Description
Technical field
The present invention relates to a kind of hot rolling system high rate filter, specifically a kind of hot rolling sewage circulating high rate filter that is applied to
Strong osmotic cleaning agent and its cleaning method.
Background technology
Hot rolling sewage circulating system is mainly for the users such as heating furnace water sealed tank, operation roll of mill cooling, milling train and roller-way cooling, machine
Frame kink is cooled down and de-scaling pump house supplement water, rushes between iron scale, grinding roller etc. with water etc..Removed with water supply water temperature and rush iron scale
With being required to outside water less than 35 DEG C, backwater temperature rise≤8 DEG C.Rush iron scale water and the supply of iron scale pump group rushed by Whirlwind tank,
Operation roll of mill cooling, milling train and roller-way cooling, machine frame loop cooling and de-scaling pump house supplement water by two in circulating pump room
Group pump is supplied water to different users respectively, and individually water supplying pump is set between grinding roller.Contain substantial amounts of iron scale and oil in above-mentioned backwater,
Rotational flow settling pond is flowed automatically to by iron sheet ditch, in the iron scale of Whirlwind tank removal about 90%, water outlet is lifted with pump after treatment
To advective separation of oil sedimentation basin, oil removing is further precipitated.Advective separation of oil sedimentation basin is provided with Oil and slag scraping machine and skimming plant.Primary water
Absorbing well, absorption well is flowed to, lifting pump group by horizontal flow basin is all sent to high rate filter filtering, lowers the temperature using cooling tower in overbottom pressure, cools down
Water afterwards is pressurizeed by water supply pump group and is recycled for rolling line user, to prevent the blocking of rolling line equipment, in pump group outlet header
Upper setting Full-automatic self-cleaning piping filter.
Existing hot rolling system high rate filter takes the greasy dirt and impurity in physics backwash mode removal filtrate substantially, instead
Developing result is poor, it is difficult to meet effluent quality requirement, filter material replacement cycle is short, general 2-3 needs all to change, costly,
Artificial intensity is big.Specifically, have the drawbacks of current hot rolling system high rate filter existing cleaning technique：
1st, the difficult control of backwash hydraulic pressure, higher than 0.15MPa, filtrate is easily rushed out and enters concentration basin, influences follow-up sludge pressure
Squeeze, poor filtration effect after filtrate leakage, while filtrate is largely lost in needs being augmented, consumes manpower and materials.Less than 0.15MPa
Single tank backwash water underfed can be caused, not washed clean clearly, cause filtrate it is hardened, hardening, cause filtering water decline, water quality become
Difference, causes vicious circle.
2nd, high rate filter uses long, easy hardened, the mixed layer of its filtrate, and substantial amounts of suspended impurity and oil are mixed in filtrate
Mud, filtration cycle Effects of Water Quality is poor.Depending on system for use in carrying water quality condition, change within general 3 years a filtrate, separate unit filter replacement into
This is 70,000 yuan, is converted into 2.33 ten thousand yuan/platform, is overhauled costly.
3rd, can not realize that Full-automatic backwashing is operated, single manual backwash labour intensity of tank is big.
Therefore the chemical cleaning method of high rate filter is developed and is promoted, filtrate service life can be extended, reduce manpower
Material resources put into, and reduce waste discharge, further support energy-conserving and environment-protective cause, are the inexorable trends of enterprise's production.
The content of the invention
It is main it is an object of the invention to provide a kind of cleaning agent and cleaning method for being applied to hot rolling sewage circulating high rate filter
The pollution of steel mill hot rolling system high rate filter filtrate and hardened influence filter effect are solved the problems, such as, using in the present invention
Strong osmotic cleaning agent and cleaning method, can efficiently solve hot rolling sewage circulating system high-speed filter oily pollution and filtrate is hardened
Problem, it is ensured that effluent quality meets water supply requirement.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of cleaning agent for being applied to hot rolling sewage circulating high rate filter, the cleaning agent weight percent content is：
Na2CO39%~11%, waterglass 0.8%~1.2%, triethanolamine 3.6%~4.1%, butyl cellosolve 1.5%~
1.8%th, laurate 4.5%~5.0%, balance of water.
A kind of cleaning method for being applied to hot rolling sewage circulating high rate filter, the cleaning step is：
1), under high rate filter stoppage in transit state, filter backwash emptying valve is opened, manhole in opening after ventilation, is used
Feeler lever gos deep into mud layer, checks filtrate situation and greasy filth thickness；
2), close lower draining and leach penstock, open filter influent or backwash inlet valve, control liquid level；
3) piece alkali and cleaning agent, are sequentially added；
4), ventilation is soaked more than 12 hours, and adjustment backwash turnover water balance, ventilation carries out steam and combines flushing, and observation is anti-
Wash-off water is untill backwash water outlet becomes clear.
Step 1) in, the filtrate carries out filter chemistry when having hardened situation or greasy filth average thickness more than 2mm is clear
Wash work.
Step 2) in, the Liquid level is flooding 50-100 centimetres of upper strata filtrate.
Step 3) in, a 760m3The high rate filter of/h adds 100-200 kilograms of the cleaning agent, piece alkali 50-100
Kilogram.
The method step is additionally included in step 4) after cleaning, repeat step 1) to 4) cleaning repeatedly, until filtrate is loose,
It is terminal without greasy filth attachment.
Beneficial effects of the present invention：The cleaning agent provided in the present invention is mainly the compounding of basic agent and organic reagent
Agent, under high pH conditions, there is good demulsification peptizaiton；This cleaning method can effectively decompose greasy filth and oil emulsion in filter
Fat, loose filtrate, it is ensured that high rate filter filter effect, water after filter matter is up to standard, the filter reduced caused by filter clogging are anti-
Number of times is washed, human input is reduced, filter service life is effectively increased, is that enterprise's drop originally contributes.
Brief description of the drawings
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is applied to hot rolling sewage circulating high rate filter cleaning method flow chart for one kind of the present invention；
Fig. 2 is greasy filth situation schematic diagram in hot rolling sewage circulating high rate filter；
Fig. 3 is filtrate schematic diagram before the cleaning of hot rolling sewage circulating high rate filter；
Fig. 4 is filtrate schematic diagram after the cleaning of hot rolling sewage circulating high rate filter.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is only a part of embodiment of the invention to apply example, rather than whole embodiments.Based on the embodiment in the present invention, this area is general
All other embodiment that logical technical staff is obtained under the premise of creative work is not made, belongs to present invention protection
Scope.
A kind of strong osmotic cleaning agent for being applied to hot rolling sewage circulating high rate filter, the cleaning agent is a kind of prescription medicament,
Mainly Na2CO3, the infiltration cleaning formulation that compounds according to a certain percentage of waterglass, triethanolamine, butyl cellosolve and laurate,
Filter sand effect is significant to cleaning sludge containing, is filtered using the strong osmotic cleaning agent assisted cleaning process technical scheme to separate unit
Device is cleaned offline, can effectively remove oil removal and greasy dirt；
Specifically, the cleaning agent percentage of weight formula is：Na2CO39%~11%, waterglass 0.8%~1.2%, three
Monoethanolamine 3.6%~4.1%, butyl cellosolve 1.5%~1.8%, laurate 4.5%~5.0%, balance of water, are matched somebody with somebody with this
The filter sand effect that greasy filth high is cleaned under Fang Gao pH conditions is more notable；
Na in the cleaning agent formula2CO3Act as regulation pH value and dissolving grease, Na2CO3It is dissolved in water and forms carbonate
Ion, carbanion hydrolyzes to form bicarbonate ion and hydroxide ion, and the aobvious alkalescence of solution, hydroxide ion promotes grease
Hydrolysis, formation is dissolved in the polyalcohol and aliphatic acid of water；
Waterglass Na2O·nSiO2Effect：Wetting emulsification in the basic conditions, can promote the breast of oil and cleaning agent
Change is acted on, and is conducive to greasy filth to be stripped out from filtrate, prevents secondary pollution；
Triethanolamine N (CH2CH2OH)3Effect：Surfactant, adds triethanolamine in formula, can promote oily dirt
Removed from attachment, meanwhile, detergency ability can be improved by improving alkalescence, and have its fabulous compatibility；
Butyl cellosolve is acted on：Have improvement emulsifiability and the auxiliary by mineral dissolution in soap lye molten in formula
Agent；
Lauric effect：Surfactant, promotes grease to be separated with attachment, has in formula and changes oil emulsion
The effect of property, can squeeze the emulsifying agent of two-phase interface, promote water-oil separating.
The above-mentioned strong osmotic cleaning agent with compoundings such as highly basic and surfactants, coordinates science cleaning program to carry out at a high speed
Cleaning filter, can be widely applied to the cleaning of steel-making continuous casting and hot rolling sewage circulating system oily waste water filter；Referring to Fig. 1, on
Stating cleaning step is：
1st, under high rate filter stoppage in transit state, filter backwash emptying valve is opened, manhole in opening after ventilation, is used
Feeler lever gos deep into mud layer, checks filtrate situation and greasy filth thickness, referring to Fig. 2, when discovery filtrate has hardened situation or greasy filth average
The Chemical cleaning work of filter is carried out when thickness is more than 2mm；
2nd, close lower draining and leach penstock, open filter influent or backwash inlet valve, Liquid level is flooding upper strata
50-100 centimetres of filtrate；
3rd, strong osmotic cleaning agent, a general 760m are added according to the hardened situation of filtrate3The high rate filter of/h is added
50-100 kilograms of 100-200 kilograms of cleaning agent and piece alkali.Lid inspection situation is taken off according to filter, such as greasy filth is thicker or filtrate plate
Knot situation is serious, can in right amount increase the consumption of piece alkali and bleeding agent.
4th, ventilation is soaked 12-14 hours, and adjustment backwash turnover water balance, ventilation carries out steam and combines flushing, observes backwash
Water outlet is untill backwash water outlet becomes clear.
After cleaning, filter is opened, filtrate oil-containing situation is checked again, to determine cleaning performance.If filtrate greasy filth is still
It is clearly present or filtrate still has hardened situation, then repeats above-mentioned cleaning method and clean repeatedly, until filtrate is loose, without greasy filth attachment
It is terminal, referring to Fig. 3-4.
Strong osmotic cleaning agent in the present invention is a kind of prescription medicament, mainly the compounding of basic agent and organic reagent
Agent, under the conditions of high ph-values (>=12), there is good demulsification peptizaiton；This infiltration cleaning method is not strict to hydraulic demand, energy
Effectively alleviate the filterins media run-off problem that hydraulic pressure control is not easily caused, extend filter material service life；This cleaning method can have
Effect decomposes greasy filth and emulsified fat, loose filtrate in filter, it is ensured that high rate filter filter effect, water after filter matter is up to standard, drop
The low filter backwash number of times caused by filter clogging, reduces human input, effectively increases filter service life, is enterprise
Drop originally contributes.
The like product of the object of the invention can be realized at present to be had with bodied ferric sulfate, aluminium chloride and PAFC
It is the series of degreaser.The present invention has the oil removing permeance property more more efficient than like product, while solving their dosing
Amount is big, and cost performance is low and the problems such as not thorough cleaning performance.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All of details is described, it is only described specific embodiment that the invention is not limited yet.Obviously, according to the content of this specification,
Can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (6)
1. a kind of cleaning agent for being applied to hot rolling sewage circulating high rate filter, it is characterised in that the cleaning agent weight percent content
For：Na2CO39%~11%, waterglass 0.8%~1.2%, triethanolamine 3.6%~4.1%, butyl cellosolve 1.5%~
1.8%th, laurate 4.5%~5.0%, balance of water.
2. a kind of cleaning method for being applied to hot rolling sewage circulating high rate filter, it is characterised in that the cleaning step is：
1), under high rate filter stoppage in transit state, filter backwash emptying valve is opened, manhole in opening after ventilation, uses feeler lever
Go deep into mud layer, check filtrate situation and greasy filth thickness；
2), close lower draining and leach penstock, open filter influent or backwash inlet valve, control liquid level；
3) piece alkali and cleaning agent, are sequentially added；
4), ventilation is soaked more than 12 hours, and adjustment backwash turnover water balance, ventilation carries out steam and combines flushing, and observation backwash goes out
Water is untill backwash water outlet becomes clear.
3. a kind of cleaning method for being applied to hot rolling sewage circulating high rate filter according to claim 2, it is characterised in that step
It is rapid 1) in, the filtrate carried out when having hardened situation or greasy filth average thickness more than 2mm filter Chemical cleaning work.
4. a kind of cleaning method for being applied to hot rolling sewage circulating high rate filter according to claim 2, it is characterised in that step
It is rapid 2) in, the Liquid level is flooding 50-100 centimetres of upper strata filtrate.
5. a kind of cleaning method for being applied to hot rolling sewage circulating high rate filter according to claim 2, it is characterised in that step
It is rapid 3) in, a 760m3The high rate filter of/h adds 100-200 kilograms of the cleaning agent, 50-100 kilograms of piece alkali.
6. a kind of cleaning method for being applied to hot rolling sewage circulating high rate filter according to claim 2, it is characterised in that should
Method and step is additionally included in step 4) after cleaning, repeat step 1) to 4) cleaning repeatedly, until filtrate is loose, without greasy filth attachment
It is terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124095.1A CN106929165A (en) | 2017-03-03 | 2017-03-03 | A kind of cleaning agent and cleaning method for being applied to hot rolling sewage circulating high rate filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124095.1A CN106929165A (en) | 2017-03-03 | 2017-03-03 | A kind of cleaning agent and cleaning method for being applied to hot rolling sewage circulating high rate filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106929165A true CN106929165A (en) | 2017-07-07 |
Family
ID=59423946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710124095.1A Pending CN106929165A (en) | 2017-03-03 | 2017-03-03 | A kind of cleaning agent and cleaning method for being applied to hot rolling sewage circulating high rate filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN106929165A (en) |
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| CN102978022A (en) * | 2012-12-12 | 2013-03-20 | 辽宁科技大学 | Phosphorus-free foam-free low-temperature steel plate surface cleaning agent and preparation method thereof |
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| CN104307241A (en) * | 2014-11-14 | 2015-01-28 | 黄石市浩运矿山设备节能开发有限公司 | Cleaning method of ceramic filter |
| CN104357251A (en) * | 2014-10-27 | 2015-02-18 | 东北大学 | Mechanical filter oil stain cleaning agent and preparation method thereof |
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| CN102978022A (en) * | 2012-12-12 | 2013-03-20 | 辽宁科技大学 | Phosphorus-free foam-free low-temperature steel plate surface cleaning agent and preparation method thereof |
| CN103466908A (en) * | 2013-09-07 | 2013-12-25 | 鞍钢股份有限公司 | Steel rolling oil sludge clearing agent and clearing method |
| CN103710161A (en) * | 2013-12-31 | 2014-04-09 | 上海交通大学 | Cleaning agent for removing heavy dirt and greasy dirt |
| CN103820232A (en) * | 2014-01-22 | 2014-05-28 | 天津清正然化工科技有限公司 | Filtering material cleaning agent for oilfield sewage filtering system |
| CN104357251A (en) * | 2014-10-27 | 2015-02-18 | 东北大学 | Mechanical filter oil stain cleaning agent and preparation method thereof |
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Application publication date: 20170707 |