CN108793652A - A kind of pickling sludge resource processing apparatus and technique - Google Patents
A kind of pickling sludge resource processing apparatus and technique Download PDFInfo
- Publication number
- CN108793652A CN108793652A CN201810831761.XA CN201810831761A CN108793652A CN 108793652 A CN108793652 A CN 108793652A CN 201810831761 A CN201810831761 A CN 201810831761A CN 108793652 A CN108793652 A CN 108793652A
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- Prior art keywords
- acidleach
- acid
- pump
- sink
- kettle
- 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.)
- Granted
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- 238000005554 pickling Methods 0.000 title claims abstract description 34
- 239000010802 sludge Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002253 acid Substances 0.000 claims abstract description 51
- 238000005406 washing Methods 0.000 claims abstract description 37
- 239000006096 absorbing agent Substances 0.000 claims abstract description 15
- 238000000746 purification Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005360 mashing Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 24
- 239000012065 filter cake Substances 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 10
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 229910001415 sodium ion Inorganic materials 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 235000021110 pickles Nutrition 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 27
- 239000000243 solution Substances 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical group [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229960002089 ferrous chloride Drugs 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910021577 Iron(II) chloride Inorganic materials 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Abstract
The present invention provides a kind of pickling sludge resource processing apparatus and techniques, device includes Disintegrating machine with heater, slurrying sink, mashing pump, sink, washing pump, filter press, screw conveyor, acidleach kettle, acid pump, exhaust fan, tail gas absorber, acid liquor filter, Disintegrating machine with heater connects slurrying sink, slurrying sink connects mashing pump, mashing pump connects filter press, sink connects washing pump, washing pump connects filter press, the cleaning solution outlet connection slurrying sink of filter press, filter press is connected to screw conveyor entrance, screw conveyor is connected to acidleach kettle, acidleach kettle connects exhaust fan, exhaust fan connects tail gas absorber, the liquid outlet of acidleach kettle connects acid pump, acid pump connects acid liquor filter, acidleach kettle is additionally provided with acid solution entrance.Compared with prior art, the device of the invention investment is small, is combined with steel industry acid purification system, drastically reduces the amount of pickling sludge, becomes pickle liquor and rinses the tool of water process.
Description
Technical field
The present invention relates to the environmental technology field of metal surface pickle liquor processing more particularly to a kind of pickling sludge resources
Change processing unit and technique.
Background technology
Pickling sludge is the solid waste for the neutralized generation of pickling waste waters that Treatment of Metal Surface process generates, pickling waste waters
Essentially from the cleaning waste water for rinsing the residual acid generation of steel surface and pickle is prepared, acid regeneration is discharged and pickling lines
The acid waste water etc. that ground flushing generates.With the development of steel and iron industry and Surface Processing Industry, the annual pickling waste waters in the whole nation
Yield it is increasing, if direct emission, environmental pollution harm be apparent.At present for the processing water of such waste water
Flat low, common is exactly lime or caustic soda neutralization precipitation method, has large quantities of lime to have neither part nor lot in the process using neutralization by lime
Reaction is just wrapped up by other flcos and is sunken in sludge, causes sludge yield big, and is handled using caustic soda, containing big in sour mud
The sodium chloride of amount, it is difficult to handle, if arbitrarily toppling over or simply filling, easily cause serious problem of environmental pollution.From guarantor
Retaining ring border Resource recovery sets out, and existing enterprise utilizes pickling recycling sludge and is mainly dried after pretreatment for brickmaking
Or production cement.
Invention content
The present invention provides a kind of pickling sludge resource processing apparatus and technique, it can effectively remove and contain in sludge
Sodium ion, and be combined with steel industry acid purification system, pickling sludge quantity be greatly reduced, avoids environmental pollution, invested
It is small, it is at low cost.
To achieve the above object, the present invention is realized using following technical scheme：
A kind of pickling sludge resource processing apparatus, including Disintegrating machine with heater, slurrying sink, mashing pump, sink, washing pump,
Filter press, screw conveyor, acidleach kettle, acid pump, exhaust fan, tail gas absorber, acid liquor filter, the Disintegrating machine with heater outlet
An entrance of slurrying sink, slurrying sink outlet connection slurry pump intake are connected, slurry pump discharge connects filter press
Slurry inlet, the sink outlet connection washing pump intake, the washing entrance of washing pump discharge connection filter press, filter press are washed
Another entrance of liquid outlet connection slurrying sink is washed, the filter press solid outlet is connected to screw conveyor entrance,
Screw conveyor exports an entrance for being connected to acidleach kettle, and the gas vent of acidleach kettle connects exhaust fan entrance, tail gas wind
The liquid outlet of machine outlet connection tail gas absorber entrance, acidleach kettle connects acid solution pump intake, and acid solution pump discharge connects acid solution mistake
Filter inlet, the acidleach kettle are additionally provided with acid solution entrance.
The tail gas absorber outlet at bottom connects tail gas tower pump entry, and tail gas tower circulating-pump outlet connects tail gas
At the top of absorption tower.
A kind of technique carrying out pickling recycling sludge processing using pickling sludge resource processing apparatus,
1) pickling sludge filter cake is crushed by Disintegrating machine with heater, makes it into quick pulp in slurrying sink, so
Afterwards slurrying washing is carried out using filter press washings；
2) slurry, which enters, carries out press filtration in filter press, the filter cake after press filtration is washed by the water in sink, sodium therein
Ion 95%wt is removed, and the solution after washing enters slurrying in slurrying sink and uses；
3) filter cake after washing is sent into through screw conveyor in acidleach kettle, and hydrochloric acid is added in acidleach kettle and carries out acidleach, acidleach
Material afterwards, which enters in acid liquor filter, to be filtered, and filtered solution directly removes acid purification system, filters the filter residue of formation
Incinerator is gone to burn；
4) acid mist that acidleach process generates, which is extracted by exhaust fan negative pressure in tail gas absorber, carries out tail gas absorption, wherein gas
Body absorbing medium is soda bath, is recycled by tail gas tower circulating pump.
Above-mentioned steps 3) in the hydrochloric acid that is added in acidleach kettle come from acid purification system, a concentration of 18-20%wt.
Above-mentioned steps 3) in the filter residue that is formed of filtering account for the 4-8%wt of former slag total amount.
Compared with prior art, the beneficial effects of the invention are as follows：
The washing in situ of slurrying washing and filter press is formed combination by the present invention, is first carried out washing in situ, is carried out slurrying afterwards
Washing, the second adverse current that pickling sludge is realized by filter press and slurrying sink wash, and simply, fast, equipment investment is small；
The sodium ion in sludge after washing can be greatly reduced, and provide convenience for subsequent use；Sludge after washing is again
The secondary hydrochloric acid with the 18-20% of the acid purification system by-product after pickling of metal reacts, by the iron hydroxide and hydroxide in sludge
It is iron chloride and solution of ferrous chloride that ferrous iron, which neutralizes, and after being filtered, the slag containing large amount of organic filters out, and filtrate is knot
Brilliant iron chloride and solution of ferrous chloride, is returned directly to acid purification system, and pyrohydrolysis forms iron oxide red and regeneration hydrochloric acid.This
The plant investment of invention is small, is combined with the existing hydrochloric acid pickler regenerative system of steel industry, drastically reduces pickling sludge
Amount, become pickle liquor with rinse water process tool.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
In figure：1- Disintegrating machine with heater；2- slurrying sinks；3- mashing pumps；4- sinks；5- washing pumps；6- filter presses；7- spiral transferrings
Send machine；8- acidleach kettles；9- acid pumps；10- exhaust fans；11- tail gas absorbers；12- tail gas tower circulating pumps；13- acid liquor filterings
Device.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention：
See Fig. 1, a kind of pickling sludge resource processing apparatus, including Disintegrating machine with heater 1, slurrying sink 2, mashing pump 3, sink
4, washing pump 5, filter press 6, screw conveyor 7, acidleach kettle 8, acid pump 9, exhaust fan 10, tail gas absorber 11, acid solution mistake
Filter 13, an entrance of the outlet of the Disintegrating machine with heater 1 connection slurrying sink 2, the outlet of slurrying sink 2 connection mashing pump 3 enter
Mouthful, the slurry inlet of the outlet of mashing pump 3 connection filter press 6, the outlet of the sink 4 connects 5 entrance of washing pump, and washing pump 5 exports
Connect the washing entrance of filter press 6, another entrance of the cleaning solution outlet connection slurrying sink 2 of filter press 6, the pressure
6 solid outlet of filter is connected to 7 entrance of screw conveyor, and screw conveyor 7 exports an entrance for being connected to acidleach kettle 8, acid
The gas vent for soaking kettle 8 connects 10 entrance of exhaust fan, the outlet of exhaust fan 10 connection 11 entrance of tail gas absorber, acidleach kettle 8
Liquid outlet connect 9 entrance of acid pump, the outlet of acid pump 9 connection 13 entrance of acid liquor filter, the acidleach kettle 8 is additionally provided with acid
Liquid entrance.
11 outlet at bottom of tail gas absorber connection tail gas tower circulating pump, 12 entrance, the outlet of tail gas tower circulating pump 12 connects
Connect 11 top of tail gas absorber.
A kind of technique that pickling recycling sludge processing is carried out using pickling sludge resource processing apparatus：
1) pickling sludge filter cake is effectively crushed by Disintegrating machine with heater 1, making it into slurrying sink 2 can be fast
Then the pulp of speed carries out slurrying washing using 6 washings of filter press；
2) slurry, which enters, carries out press filtration in filter press 6, the filter cake after press filtration is washed by the water in sink 4, therein
Sodium ion 95%wt is removed, and the solution after washing enters slurrying in slurrying sink 2 and uses；
3) filter cake after washing is sent into through screw conveyor 7 in acidleach kettle 8, and hydrochloric acid is added in acidleach kettle 8 and carries out acidleach, acid
Material after leaching is mixed solution and the solid precipitation of iron chloride and frerrous chloride, and material, which enters in acid liquor filter 13, to carry out
Filter, filtered solution directly go acid purification system that pyrolytic preparation iron oxide red and hydrochloric acid, the filter residue for filtering formation is gone to go
Incinerator burns；
4) acid mist that acidleach process generates, which is extracted by 10 negative pressure of exhaust fan in tail gas absorber 11, carries out tail gas absorption,
Middle gas absorbing medium is soda bath, is recycled by tail gas tower circulating pump 12, is periodically added.
Above-mentioned steps 3) in the hydrochloric acid that is added in acidleach kettle 8 come from metal killing pickle acid purification system, a concentration of 18-
20%wt.
Above-mentioned steps 3) in the filter residue that is formed of filtering account for the 4-8%wt of former slag total amount.It crosses filter residue and contains a large amount of organic matter
(steel industry needs that the organic components such as corrosion inhibiter are added in water), goes incinerator to burn.
Pickling sludge filter cake enters Disintegrating machine with heater 1, and water enters sink 4, and 18-20% hydrochloric acid enters acidleach kettle 8, soda bath into
Enter 12 entrance of tail gas tower circulating pump.
The present invention can make the sodium ion in pickling sludge de- using slurrying washing and filter press two countercurrent washings of washing in situ
Except rate is 95%.
The device of the invention need not heat, and not need high-temperature service, be suitable for, realization pickling dirt mating with acid purification system
The significantly decrement treatment of mud.
Working principle of the present invention is as follows：
1, countercurrent washing is carried out by filter press 6 and slurrying sink 2, the sodium ion in filter cake is removed；
2, acid-leaching reaction includes：
Fe(OH)2+2HCl→FeCl2+H2O
Fe(OH)3+3HCl→FeCl3+3H2O
Solution after acidleach is mainly the mixture of iron chloride and frerrous chloride.
3, acid mist is HCl gases, and reaction includes：
Na(OH)+HCl→NaCl+H2O
The acid mist that acidleach generates effectively is absorbed by soda bath.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of pickling sludge resource processing apparatus, which is characterized in that including Disintegrating machine with heater, slurrying sink, mashing pump, water
Slot, washing pump, filter press, screw conveyor, acidleach kettle, acid pump, exhaust fan, tail gas absorber, acid liquor filter, it is described
One entrance of Disintegrating machine with heater outlet connection slurrying sink, slurrying sink outlet connection slurry pump intake, slurry pump discharge connect
The slurry inlet of filter press, the sink outlet connection washing pump intake are connect, washing pump discharge connects the washing entrance of filter press,
Another entrance of the cleaning solution outlet connection slurrying sink of filter press, the filter press solid outlet are connected to spiral transferring
Machine entrance, screw conveyor is sent to export an entrance for being connected to acidleach kettle, the gas vent connection exhaust fan of acidleach kettle enters
Mouthful, the liquid outlet of exhaust fan outlet connection tail gas absorber entrance, acidleach kettle connects acid solution pump intake, and acid solution pump discharge connects
Acid liquor filter entrance is connect, the acidleach kettle is additionally provided with acid solution entrance.
2. a kind of pickling sludge resource processing apparatus according to claim 1, which is characterized in that the tail gas absorption
Tower bottom outlet connection tail gas tower pump entry, tail gas tower circulating-pump outlet connect tail gas absorption top of tower.
3. a kind of carried out using pickling sludge resource processing apparatus as claimed in claim 1 or 2 at pickling recycling sludge
The technique of reason, it is characterised in that：
1) pickling sludge filter cake is crushed by Disintegrating machine with heater, makes it into quick pulp in slurrying sink, it is then sharp
Slurrying is carried out with filter press washings to wash；
2) slurry, which enters, carries out press filtration in filter press, the filter cake after press filtration is washed by the water in sink, sodium ion therein
95%wt is removed, and the solution after washing enters slurrying in slurrying sink and uses；
3) filter cake after washing is sent into through screw conveyor in acidleach kettle, and hydrochloric acid is added in acidleach kettle and carries out acidleach, after acidleach
Material, which enters in acid liquor filter, to be filtered, and filtered solution directly removes acid purification system, and the filter residue for filtering formation goes to burn
Stove is burnt to burn；
4) acid mist that acidleach process generates, which is extracted by exhaust fan negative pressure in tail gas absorber, carries out tail gas absorption, and wherein gas is inhaled
Receipts medium is soda bath, is recycled by tail gas tower circulating pump.
4. a kind of pickling sludge recycling process according to claim 3, which is characterized in that above-mentioned steps 3) in acid
The hydrochloric acid being added in leaching kettle comes from acid purification system, a concentration of 18-20%wt.
5. a kind of pickling sludge recycling process according to claim 3, which is characterized in that above-mentioned steps 3) in mistake
The filter residue that filter is formed accounts for the 4-8%wt of former slag total amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810831761.XA CN108793652B (en) | 2018-07-26 | 2018-07-26 | Pickling sludge recycling treatment device and technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810831761.XA CN108793652B (en) | 2018-07-26 | 2018-07-26 | Pickling sludge recycling treatment device and technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108793652A true CN108793652A (en) | 2018-11-13 |
| CN108793652B CN108793652B (en) | 2024-01-02 |
Family
ID=64078266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810831761.XA Active CN108793652B (en) | 2018-07-26 | 2018-07-26 | Pickling sludge recycling treatment device and technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108793652B (en) |
Cited By (3)
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|---|---|---|---|---|
| CN110393958A (en) * | 2019-08-16 | 2019-11-01 | 南通百川新材料有限公司 | A kind of diaphragm filter press Washing of Filter Cake device and method |
| CN112479528A (en) * | 2020-12-14 | 2021-03-12 | 江苏华西节能装备有限公司 | Pickling wastewater sludge regeneration system and treatment method |
| WO2022141413A1 (en) * | 2020-12-31 | 2022-07-07 | 中冶南方工程技术有限公司 | Mixed acid waste liquor treatment system |
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| CN110393958A (en) * | 2019-08-16 | 2019-11-01 | 南通百川新材料有限公司 | A kind of diaphragm filter press Washing of Filter Cake device and method |
| CN112479528A (en) * | 2020-12-14 | 2021-03-12 | 江苏华西节能装备有限公司 | Pickling wastewater sludge regeneration system and treatment method |
| WO2022141413A1 (en) * | 2020-12-31 | 2022-07-07 | 中冶南方工程技术有限公司 | Mixed acid waste liquor treatment system |
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