CN103086407B - Seed precipitation mother liquor defoaming method and system - Google Patents
Seed precipitation mother liquor defoaming method and system Download PDFInfo
- Publication number
- CN103086407B CN103086407B CN201110339075.9A CN201110339075A CN103086407B CN 103086407 B CN103086407 B CN 103086407B CN 201110339075 A CN201110339075 A CN 201110339075A CN 103086407 B CN103086407 B CN 103086407B
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- seed precipitation
- pipe
- precipitation solution
- mother liquor
- spray equipment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Physical Water Treatments (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention relates to a defoaming method, and especially relates to a simple method and a simple system for eliminating foam of seed precipitation mother liquor produced in an alumina production process when aluminum hydroxide crystal seeds are filtered by using a filter. The seed precipitation mother liquor defoaming method is characterized in that a branched pipe is arranged on a seed precipitation mother liquor pipe continuously delivers to a fine liquid cooling process, such that a part of seed precipitation mother liquor is delivered back to a filtration liquid tank; and returned seed precipitation mother liquor is sprayed to the filtration liquid tank through a spraying device arranged on the end of the branches pipe. The method and the system has the advantages and effects that: the process flow is continuous, and artificial operating is basically not needed; spraying device outlet pressure and branched pipe flow rate can be adjusted according to different foaming statuses, such that the method and the system have a wide application range over seed precipitation mother liquor under different process conditions, wherein only the additional investment of a small amount of added pipe materials and spray heads is needed; with the method, circulation amount is increased, but the defoaming effect is substantial, such that enterprise production and operation environments are improved, filtration liquid pump flow rate is reduced, and energy-saving and effect-enhancing effects are provided.
Description
Technical field
The present invention relates to a kind of debubbling method, particularly relate in a kind of easy elimination alumina producing the method and system applied and produce foam when filter filters aluminium hydroxide crystal seed generation filtrate and seed precipitation solution.
Background technology
At present, bayer process has become the leading technique of producing aluminum oxide in the world, in Bayer process, dissolution fluid is isolated after red mud is lowered the temperature through dilution again and is obtained seminal fluid, aluminium hydroxide is that seminal fluid passes through interpolation aluminium hydroxide crystal seed and seeded precipitation technique obtains, the aluminium hydroxide crystal seed of separating out from seminal fluid need through filtering to reduce the subsidiary sodium aluminate solution in its surface, otherwise the aluminum hydroxide particles agglomeration that can affect in kind of point process and growth, namely affect the granularity of rate of decomposition and aluminum hydroxide particles.And produce in reality due to the specific chemistry of seed precipitation solution and physical properties, the filtrate that kind of point slip obtains through vacuum filter and seed precipitation solution can produce a large amount of foams, foam not only makes filtrate receiver often occur emitting groove phenomenon, have a strong impact on production and operating environment, and the volume of foam makes more greatly the type selecting of filtrate pump need to consider according to the several times of actual flow.
Therefore how to remove the foam of seed filter progress filtrate in alumina producing, be a difficult problem for puzzlement alumina producing enterprise always.Once used mechanical defoaming, interpolation defoamer froth breaking in production and increased the modes such as kind of filtrate receiver and addressed this problem, mechanical defoaming needs to increase Despumation device in seed precipitation solution groove, and in filtrate receiver, have liquid seal trough, so difficult in Machine Design, design and unreasonablely can produce more foam on the contrary; Defoamer is pharmaceutical chemicals, and after adding, it enters in alumina producing system, is unfavorable for normal production after long term accumulation; And increase seed precipitation solution groove and suitably can only improve operating mode, fundamentally can not solve bubble problem, and filtrate receiver add too high after need filter place flooring to raise, cause this operation initial cost greatly to increase.
Summary of the invention
The present invention is the method and system providing a kind of seed precipitation solution froth breaking in order to solve the problems of the technologies described above, and object eliminates the foaming of seed precipitation solution generation in time, utilizes the seed precipitation solution of backflow to spray seed precipitation solution foam thus plays the effect of froth breaking.
In order to solve the problems of the technologies described above, the present invention is achieved in that the method for seed precipitation solution froth breaking, establish take-off pipe to make a part of seed precipitation solution return filtrate receiver in the seed precipitation solution pipeline being sent to seminal fluid cooling process continuously, the seed precipitation solution returned is sprayed onto filtrate receiver through the spray equipment of take-off pipe end.
Described spray equipment top hole pressure is 0.5 ~ 0.8MPa.
Described spray equipment exceeds filtrate receiver groove top 1.0 ~ 1.5m.
The take-off pipe of described spray equipment front portion is provided with reducer union.
The system of seed precipitation solution froth breaking, it is characterized in that vacuum filter is connected with vacuum submerged soil by pipeline, vacuum submerged soil top is connected with vacuum pump, the bottom of vacuum submerged soil is connected with filtrate receiver, the bottom of filtrate receiver is connected with filtrate pump by pipeline, be provided with spray equipment in the over top of filtrate receiver, spray equipment is located at the end of take-off pipe, and take-off pipe is the branch that filtrate pump is sent on seminal fluid cooling process seed precipitation solution pipeline.
Advantage of the present invention and effect are: above technical process is continuous print entirely, does not substantially need manual hand manipulation; And the top hole pressure of spray equipment, the flow of take-off pipe can be regulated according to different foaming situations, applied widely to the seed precipitation solution under different technology conditions, the investment of required increase is only and increases a small amount of tubing and shower nozzle; Though this invention adds internal circulating load, because froth breaking effect is obvious, improves production and the operating environment of enterprise, reduce the flow of filtrate pump, serve the effect of energy efficiency.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
In figure: 1, vacuum filter; 2, vacuum submerged soil; 3, filtrate receiver; 4, vacuum pump; 5, filtrate pump; 6, sloper; 7, spray equipment; 8, aluminum hydroxide slime; 9, seed precipitation solution; 10, filtrate.
embodiment:
Below in conjunction with accompanying drawing, the invention will be further described.
The method of seed precipitation solution froth breaking as shown in Figure 1, establish take-off pipe to make a part of seed precipitation solution 9 return filtrate receiver 3 in seed precipitation solution 9 pipeline being sent to seminal fluid cooling process continuously, the seed precipitation solution 9 returned is sprayed onto filtrate receiver 3 through the spray equipment 7 of take-off pipe end.
Described spray equipment 7 top hole pressure is 0.5 ~ 0.8MPa, and the too small defoaming effect of pressure is bad, and pressure is crossed conference and produced " secondary foam ".
Described spray equipment 7 exceeds filtrate receiver 3 groove top 1.0 ~ 1.5m, to expand projected area, if filtrate receiver area is comparatively large, can adopt 2 even multi-point injection.
The take-off pipe of described spray equipment 7 front portion is provided with reducer union 6, to improve jet velocity.
The system of seed precipitation solution froth breaking, vacuum filter 1 is connected with vacuum submerged soil 2 by pipeline, vacuum submerged soil 2 top is connected with vacuum pump 4, the bottom of vacuum submerged soil 2 is connected with filtrate receiver 3, the bottom of filtrate receiver 3 is connected with filtrate pump 5 by pipeline, be provided with spray equipment 7 in the over top of filtrate receiver 3, spray equipment 7 is located at the end of take-off pipe, and take-off pipe is the branch that filtrate pump 5 is sent on seminal fluid cooling process seed precipitation solution pipeline.
The take-off pipe of described spray equipment 7 front portion is provided with reducer union 6.
Described spray equipment 7 exceeds filtrate receiver groove top 1.0 ~ 1.5m.
Continuously aluminum hydroxide slime 8 is delivered to the charging mouth of pipe of vacuum filter 1, vacuum filter 1 and vacuum submerged soil 2, vacuum pump 4 defines closed system, aluminum hydroxide slime 8 is under the effect of vacuum pump 4, filtrate and seed precipitation solution enter vacuum submerged soil 2, seed precipitation solution flows automatically to filtrate receiver 3 under gravity, the effect that filtrate receiver 3 inside has liquid seal device can play fluid-tight makes seed precipitation solution turn back in vacuum submerged soil 2 and vacuum pump 4 by suck-back, in filtrate receiver 3, the filtrate 10 of bottom is sent to seminal fluid cooling process through filtrate pump 5, the little seed precipitation solution 9 being sent to seminal fluid cooling process returns filtrate receiver 3, seed precipitation solution 9 spray foam of backflow with pressure plays the effect of froth breaking.
Claims (5)
1. the method for seed precipitation solution froth breaking, it is characterized in that establishing take-off pipe to make a part of seed precipitation solution return filtrate receiver in the seed precipitation solution pipeline being sent to seminal fluid cooling process continuously, the seed precipitation solution returned is sprayed onto filtrate receiver through the spray equipment of take-off pipe end; Described spray equipment top hole pressure is 0.5 ~ 0.8MPa; Described spray equipment exceeds filtrate receiver groove top 1.0 ~ 1.5m.
2. the method for seed precipitation solution froth breaking according to claim 1, is characterized in that the take-off pipe of described spray equipment front portion is provided with reducer union.
3. implement the claims the system of the seed precipitation solution froth breaking of method described in 1, it is characterized in that vacuum filter is connected with vacuum submerged soil by pipeline, vacuum submerged soil top is connected with vacuum pump, the bottom of vacuum submerged soil is connected with filtrate receiver, the bottom of filtrate receiver is connected with filtrate pump by pipeline, be provided with spray equipment in the over top of filtrate receiver, spray equipment is located at the end of take-off pipe, and take-off pipe is the branch that filtrate pump is sent on seminal fluid cooling process seed precipitation solution pipeline.
4. the system of seed precipitation solution froth breaking according to claim 3, is characterized in that the take-off pipe of described spray equipment front portion is provided with reducer union.
5. the system of seed precipitation solution froth breaking according to claim 3, is characterized in that described spray equipment exceeds filtrate receiver groove top 1.0 ~ 1.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110339075.9A CN103086407B (en) | 2011-11-01 | 2011-11-01 | Seed precipitation mother liquor defoaming method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110339075.9A CN103086407B (en) | 2011-11-01 | 2011-11-01 | Seed precipitation mother liquor defoaming method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103086407A CN103086407A (en) | 2013-05-08 |
| CN103086407B true CN103086407B (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110339075.9A Expired - Fee Related CN103086407B (en) | 2011-11-01 | 2011-11-01 | Seed precipitation mother liquor defoaming method and system |
Country Status (1)
| Country | Link |
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| CN (1) | CN103086407B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542552B (en) * | 2015-09-21 | 2018-05-22 | 沈阳铝镁设计研究院有限公司 | A kind of alumina producing decomposition nut liquid debubbling method |
| CN108444562B (en) * | 2018-06-21 | 2023-12-05 | 水利部南京水利水文自动化研究所 | Liquid volume metering device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4511542A (en) * | 1984-05-24 | 1985-04-16 | Kaiser Aluminum & Chemical Corporation | Bayer process production of alumina hydrate |
| CN201136793Y (en) * | 2007-11-29 | 2008-10-22 | 唐传辉 | Defoaming box |
-
2011
- 2011-11-01 CN CN201110339075.9A patent/CN103086407B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4511542A (en) * | 1984-05-24 | 1985-04-16 | Kaiser Aluminum & Chemical Corporation | Bayer process production of alumina hydrate |
| CN201136793Y (en) * | 2007-11-29 | 2008-10-22 | 唐传辉 | Defoaming box |
Non-Patent Citations (1)
| Title |
|---|
| 几种简易喷嘴简介;王国荣;《纸和造纸》;19920731(第3期);40-41 * |
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| CN103086407A (en) | 2013-05-08 |
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Effective date of registration: 20180307 Address after: 110101 No. 176-1 Dingxiang street, Sujiatun District, Liaoning, Shenyang Patentee after: SHENYANG BOYU TECHNOLOGY Co.,Ltd. Address before: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee before: SHENYANG ALUMINIUM AND MAGNESIUM ENGINEERING AND RESEARCH INSTITUTE COMPANY LIMITED |
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Granted publication date: 20150722 Termination date: 20211101 |
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