CN202576132U - System for closed cyclic utilization of cinder flushing water in sulfuric acid preparation - Google Patents
System for closed cyclic utilization of cinder flushing water in sulfuric acid preparation Download PDFInfo
- Publication number
- CN202576132U CN202576132U CN 201220224424 CN201220224424U CN202576132U CN 202576132 U CN202576132 U CN 202576132U CN 201220224424 CN201220224424 CN 201220224424 CN 201220224424 U CN201220224424 U CN 201220224424U CN 202576132 U CN202576132 U CN 202576132U
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- CN
- China
- Prior art keywords
- lime
- cyclic utilization
- sulfuric acid
- settling
- communicated
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003818 cinder Substances 0.000 title claims abstract description 24
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 23
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 125000004122 cyclic group Chemical group 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 22
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 22
- 239000004571 lime Substances 0.000 claims abstract description 22
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 20
- 239000010865 sewage Substances 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000008267 milk Substances 0.000 abstract description 3
- 210000004080 milk Anatomy 0.000 abstract description 3
- 235000013336 milk Nutrition 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 description 9
- 239000000920 calcium hydroxide Substances 0.000 description 6
- 235000011116 calcium hydroxide Nutrition 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000006386 neutralization reaction Methods 0.000 description 6
- 238000005273 aeration Methods 0.000 description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 4
- 229910052683 pyrite Inorganic materials 0.000 description 4
- 239000011028 pyrite Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- MYSWGUAQZAJSOK-UHFFFAOYSA-N ciprofloxacin Chemical compound C12=CC(N3CCNCC3)=C(F)C=C2C(=O)C(C(=O)O)=CN1C1CC1 MYSWGUAQZAJSOK-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Removal Of Specific Substances (AREA)
Abstract
The utility model relates to a system for the closed cyclic utilization of cinder flushing water in sulfuric acid preparation, which is used for the closed cyclic utilization of cinder flushing water from wet method cinder flushing in sulfuric acid production. The back end part of a belt conveyer is interfaced with the front end part of a lime slaker; the lime slaker is communicated with a water pipe network; a cinder elevator is mounted at the back part of the lime slaker; the back end of the lime slaker is communicated with a lime milk trench; the back part of the lime milk trench is sequentially provided with a primary neutralizing tank with a mixer and a secondary neutralizing tank with a mixer; the primary neutralizing tank is communicated with cinder flushing water from a sewage settling basin; the secondary neutralizing tank is connected with a settling tank; an output pipe at the upper part of the settling tank is communicated with a clarifying basin I and a clarifying basin II; the bottom of the settling tank is connected with a plate and frame filter press through a sludge pump; an output pipe at the upper part of the plate and frame filter press is connected with the clarifying basin I and the clarifying basin II; and output pipes at the upper parts of the clarifying basin I and the clarifying basin II are communicated with a clear water recycling basin. The system provided by the utility model achieves the advantages of pollution control, emission reduction, energy saving, environment friendliness, simple technical process, good sewage treatment effect, less technical equipment, low investment, low labor intensity of personnel and tidy production environment, and can effectively realize the closed cyclic utilization of the cinder flushing water.
Description
Technical field
The utility model relates to the pyrite-based sulfuric acid production technical field, is a kind of flushing cinder water seal cyclic utilization system of gas washing in SA production specifically.
Background technology
At present; Flushing cinder water utilization system in the domestic pyrite-based sulfuric acid production production process mainly is: the pyrite slag in the furnace gas falls into the ditch through ash discharging pipe, utilizes primary water that it is washed away again, and flushing cinder water is successively through three grades of settling bowl sedimentations then; Water after the sedimentation directly discharges after the lime neutralizing treatment.There is following deficiency:
1, the flushing cinder hydromining is handled with the neutralization of three grades of settling bowl sedimentations and milk of lime, aeration, but the PH of waste water, COD are difficult to reach sewage drainage standard, and environment is caused certain pollution;
2, the sewage after the sedimentation directly discharges, and sewage is not recycled, and causes the water resources serious waste.
Summary of the invention
For overcoming the deficiency of prior art, the goal of the invention of the utility model is to provide in a kind of sulfuric acid preparation
Flushing cinder water seal cyclic utilization system so that WWT reaches the circulating water quality standard, realize the recycle of flushing cinder water seal.
The thought of design of the utility model is: the flushing cinder water after the sedimentation is sent into sewage works and is concentrated and the milk of lime neutralization; And carry out aeration, sedimentation, filter press and clarifying treatment, and remove impurity and ion, regulate PH and COD; Carry out second stage employ again after reaching standard; When the clear water reuse, stop sewage and get into underground pipe network, make its closed circulation.
Be the realization above-mentioned purpose, the leading section interface of the rearward end of the rotary conveyor of the utility model and lime slaking machine, the lime slaking machine communicates with grid, and slag extracting machine is installed in the rear portion of lime slaking machine; The rear end of lime slaking machine communicates with the grey newborn geosyncline that has pump; The rear portion of the newborn geosyncline of ash sets gradually one-level neutralizing well, the secondary neutralizing well that has stirrer, the one-level neutralizing well with from the flushing cinder water of sewage settling bowl, the secondary neutralizing well is connected with the subsider that has stirrer; The output tube on subsider top communicates with settling pond one, settling pond two; The bottom of subsider is connected with plate-and-frame filter press through steam piano; The output tube on plate-and-frame filter press top is connected with settling pond one, settling pond two, and the output tube on settling pond one, settling pond two tops communicates with the clear water pond for recovering.Said settling bowl be two and more than.
The utility model compared with prior art, pollution treatment reduces discharging, energy-conserving and environment-protective; The system handles process is simple, good sewage processing effect, processing unit and less investment; Personnel labor intensity is low; Production environment is clean and tidy, is specially adapted to pyrite-based sulfuric acid production wet method flushing cinder production system, effectively realizes the recycle of flushing cinder water seal.
Description of drawings
Fig. 1 is the system schematic of the utility model.
Embodiment
As shown in Figure 1, the leading section interface of the rearward end of rotary conveyor 1 and lime slaking machine 2, lime slaking machine 2 communicates with grid, and slag extracting machine is installed in the rear portion of lime slaking machine 2; The rear end of lime slaking machine 2 communicates with the grey newborn geosyncline 3 that has pump; The rear portion of the newborn geosyncline 3 of ash sets gradually one-level neutralizing well 4, the secondary neutralizing well 5 that has stirrer, one-level neutralizing well 4 and flushing cinder water from the sewage settling bowl, secondary neutralizing well 5 is connected with the subsider that has stirrer 6, subsider 6 be two reach more than; The output tube on subsider 6 tops communicates with settling pond 1, settling pond 28; The bottom of subsider 6 is connected with plate-and-frame filter press 10 through steam piano 9; The output tube on plate-and-frame filter press 10 tops is connected with settling pond 1, settling pond 28, and the output tube on settling pond 1, settling pond 28 tops communicates with clear water pond for recovering 11.
The treating processes of the utility model system is following.
(a) unslaked lime is sent to hopper with rotary conveyor 1 (B=500 m m) and gets into lime slaking machine 2 (Ф 1300 m m be withs slag extracting machine), through lime slaking machine 2 process concentration be 13-150Be milk of lime oneself flow into grey newborn geosyncline 3 (Ф 5m * 2.5m, 40m
3);
(b) lime-ash adopts slag extracting machine to reject the concentrated stacking processing at the ardealite storage yard place;
(c) milk of lime is squeezed into one-level neutralizing well 4 (Ф 4m * 4.5m * 50 m with cantilever slag stock pump (Q=30 m, H=20m)
3) with stir preliminary neutralization from the flushing cinder water of sewage settling bowl, form in the one-level and material, the control pH value reaches 6-8;
(d) get into secondary neutralizing well 5 (Ф 4m * 4.5m * 50 m with material in the one-level
3) carry out the aeration processing, do further neutralization, form in the secondary and material, the control pH value reaches 6-8;
(e) get into subsider 6 (Ф 6 m * 6 m, band stirs) with material in the secondary, adopt the rake formula to stir and clarify separation, clear water gets into settling pond 1, settling pond 28 (10 m * 40 m * 3.5 m) is done further clarification;
(f) thick slurry material is sent into plate-and-frame filter press 10 (150 ㎡) with steam piano (Q=40 m, H=32m) and is carried out press filtration, and filtrating gets into settling pond 1, settling pond 28 (10 m * 40 m * 3.5 m), and filter residue is transported to ardealite storage yard and concentrates stacking;
(g) filtrating is clarified in settling pond 1, settling pond 28 (10 m * 40 m * 3.5 m);
(h) get into clear water pond for recovering 11 through clarifying qualified sewage, carry out second stage employ again, be used for the clear water reuse of sulfuric acid flushing cinder.
In the treating processes of the utility model (a), the lime milk concentration of guaranteeing to prepare is at 13-150Be, if feeding-up, then influence is mobile, is prone to blocking pipe and equipment.
In the treating processes of the utility model (c), through sewage and the neutralization of milk of lime one-level, adjustable PH to 6 ~ 8; Heavy metal and milk of lime reaction; Form deposition, reduce heavy metal copper, arsenic, fluorine, iron, zinc, lead content and suspension content, effectively reduce in the neutralizing well and pipeline scale.
In the treating processes of the utility model (d), adopt aeration to handle, carry out the secondary neutralization, can further stablize PH, reducing heavy metal content and COD is COD.
In the treating processes of the utility model (e), the sedimentation and the clarifying once more method of clear liquid that adopt the rake formula to stir help the clarification of clear water to separate, and suspended substance sedimentation is got off, and realize removing contamination shunting, guarantee the clear water water quality reaching standard.
Among the treating processes of the utility model (f), (g), (h), the thick slurry material after 10 pairs of sedimentations of employing plate-and-frame filter press carries out press filtration, and the extraction clear water returns settling pond and carries out second stage employ, reclaims the filter residue GYPSUM RUBRUM to ardealite storage yard, realizes resource reutilization.
The equipment choosing of the utility model:
Claims (2)
1. the flushing cinder water seal cyclic utilization system during a sulfuric acid prepares; It is characterized in that: the leading section interface of the rearward end of rotary conveyor (1) and lime slaking machine (2); Lime slaking machine (2) communicates with grid, and slag extracting machine is installed in the rear portion of lime slaking machine (2); The rear end of lime slaking machine (2) communicates with the grey newborn geosyncline (3) that has pump; The rear portion of the newborn geosyncline of ash (3) sets gradually one-level neutralizing well (4), the secondary neutralizing well (5) that has stirrer; One-level neutralizing well (4) with from the flushing cinder water of sewage settling bowl, secondary neutralizing well (5) is connected with the subsider that has stirrer (6); The output tube on subsider (6) top communicates with settling pond one (7), settling pond two (8); The bottom of subsider (6) is connected with plate-and-frame filter press (10) through steam piano (9); The output tube on plate-and-frame filter press (10) top is connected with settling pond one (7), settling pond two (8), and the output tube on settling pond one (7), settling pond two (8) tops communicates with clear water pond for recovering (11).
2. the flushing cinder water seal cyclic utilization system in the sulfuric acid according to claim 1 preparation is characterized in that: said subsider (6) be two and more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224424 CN202576132U (en) | 2012-05-18 | 2012-05-18 | System for closed cyclic utilization of cinder flushing water in sulfuric acid preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224424 CN202576132U (en) | 2012-05-18 | 2012-05-18 | System for closed cyclic utilization of cinder flushing water in sulfuric acid preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202576132U true CN202576132U (en) | 2012-12-05 |
Family
ID=47245568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220224424 Expired - Fee Related CN202576132U (en) | 2012-05-18 | 2012-05-18 | System for closed cyclic utilization of cinder flushing water in sulfuric acid preparation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202576132U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690053A (en) * | 2014-12-09 | 2015-06-10 | 山东钢铁股份有限公司 | Light oil tank circulating slag flushing device and cleaning method |
| CN105621736A (en) * | 2015-12-24 | 2016-06-01 | 四川德胜集团钒钛有限公司 | Converter sludge squeezed water recycling device |
| CN108863113A (en) * | 2017-05-15 | 2018-11-23 | 沈阳铝镁设计研究院有限公司 | A method of improving lime milk concentration and quality |
-
2012
- 2012-05-18 CN CN 201220224424 patent/CN202576132U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690053A (en) * | 2014-12-09 | 2015-06-10 | 山东钢铁股份有限公司 | Light oil tank circulating slag flushing device and cleaning method |
| CN105621736A (en) * | 2015-12-24 | 2016-06-01 | 四川德胜集团钒钛有限公司 | Converter sludge squeezed water recycling device |
| CN108863113A (en) * | 2017-05-15 | 2018-11-23 | 沈阳铝镁设计研究院有限公司 | A method of improving lime milk concentration and quality |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150518 |
|
| EXPY | Termination of patent right or utility model |