CN205061595U - Prevent stifled embrane method denitrification facility - Google Patents
Prevent stifled embrane method denitrification facility Download PDFInfo
- Publication number
- CN205061595U CN205061595U CN201520756480.4U CN201520756480U CN205061595U CN 205061595 U CN205061595 U CN 205061595U CN 201520756480 U CN201520756480 U CN 201520756480U CN 205061595 U CN205061595 U CN 205061595U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- embrane method
- control valve
- blocking
- denitrification apparatus
- 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.)
- Active
Links
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model provides a prevent stifled embrane method denitrification facility, belongs to salt solution processing technique field. Including crystallizer (2) of connecting rich nitre liquid pipeline (1), the upper portion of crystallizer (2) still is connected with supernatant circulation pipeline (12) of circulating pump (3) and extrinsic cycle heat exchanger (4), its characterized in that: supernatant circulation pipeline (12) and rich nitre liquid pipeline (1) between still be equipped with the supernatant subassembly that adjusts the temperature. The utility model discloses the effectual embrane method denitrification facility crystallizer temperature control that has solved is unstable, and the refrigerator load is high, and system's part pipeline easily stops up, and salt water system sulfate radical is undulant big, and the repeated acting scheduling problem of system has energy saving and consumption reduction, and system's operation steadily etc. Is showing characteristics.
Description
Technical field
A kind of anti-blocking embrane method denitrification apparatus, belongs to brine treatment technical field.
Background technology
The technical process that existing apparatus realizes: sodium sulphate content requirement≤7g/l in the salt solution of ion-exchange membrane electrolyzer, through processing qualified light salt brine after pretreatment process after electrolysis with ion-exchange film, pressurization enters film method for removing sulfate radical device film group, isolate the rich nitre liquid being rich in sulfate radical, rich nitre liquid enters crystallizer, crystallizer uses the mode of external circulation heat exchanging device, by the clear liquid at crystallizer top refrigerated water circulation temperature lowering, after making the rich nitre liquid in crystallizer control to suitable Tc, sodium sulfate reaches supersaturation gradually, form sodium chloride crystal to separate out and sedimentation, by the continuous stirring of agitator, concentrated solution after freezing contains a large amount of sal glauberis, in cloudy state, muddy concentrated solution flows automatically to crystallizer core barrel, in heart bucket, sal glauberi crystalline particle is grown up gradually in a crystallizer, concentrated solution centrally bucket drops to core barrel lower part outlet, at this moment the sal glauberi in concentrated solution sinks under gravity gradually.In order to keep the level stability of crystallizer, a part of clear liquid is sent to light salt brine storage tank by variable valve and recycles.
Mainly have the following disadvantages: one is exceed design load or summer temperature is high when film group rich nitre liquid load, and during circulating water temperature height, though refrigerator oepration at full load, mould temperature is still difficult to control to design load, affect crystallizer operation; Two is be crystallization control device liquid level, and a part of clear liquid is sent to light salt brine storage tank by variable valve and recycles, this part clear liquid temperature is very low, can be used for cold exchange, does not but effectively utilize; Three is that the heat exchanger exit pipeline of circulation temperature lowering is often blocked by crystallisate, cause recycle stock flow very low, cannot circulation temperature lowering, be forced to use informal method flushing heat exchanging device outlet line, cause mould temperature to fluctuate very large, the liquid that part containing sulfate radicals is high gets back to raw material storage tank, and not only denitrating system repeats acting, waste energy, also cause brine system sulfate radical to fluctuate large.Above comprehensive action makes the shortcomings such as film group flushing cycle is short, system cloud gray model energy consumption is high, sulfate anion in brine system fluctuation is large.
Utility model content
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provides a kind of anti-blocking embrane method denitrification apparatus reducing energy consumption, eliminate blocking.
The utility model solves the technical scheme that its technical problem adopts: this anti-blocking embrane method denitrification apparatus, comprise the crystallizer connecting rich nitre liquid pipeline, the top of crystallizer is also connected with the supernatant liquor circulation line of recycle pump and external circulation heat exchanging device, it is characterized in that: be also provided with supernatant liquor temperature adjustment component between described supernatant liquor circulation line and rich nitre liquid pipeline.Heat in rich nitre liquid pipeline is passed in supernatant liquor circulation line by supernatant liquor temperature adjustment component, improves the temperature of circulation supernatant liquor, prevents supernatant liquor circulation line intercrystalline from blocking, low-temperature receiver is passed in advance rich nitre liquid, do not cause the waste of low-temperature receiver.
Described supernatant liquor temperature adjustment component comprises interchanger, the thermal source inlet of interchanger is by being connected on described rich nitre liquid pipeline with the distribution pipeline of the 5th control valve, the thermal source outlet of interchanger is by connecting the supernatant liquor circulation line of described external circulation heat exchanging device outlet side with the pipeline of the second control valve.
The low-temperature receiver entrance of described interchanger is by connecting the export pipeline of described recycle pump with the pipeline of the first control valve, the low-temperature receiver outlet of interchanger connects downstream tube group.
The thermal source inlet of described interchanger is by being connected on described rich nitre liquid pipeline with the distribution pipeline of the 5th control valve, the thermal source outlet of interchanger is by connecting the export pipeline of described external circulation heat exchanging device with the pipeline of the second control valve.
The heat of rich nitre liquid taken away in advance by supernatant liquor through interchanger heat exchange, while reducing the load of external circulation heat exchanging device, this part energy is carried into downstream tube group and stores.
The thermal source outlet of described interchanger is also by being connected to the 4th control valve outlet side on described rich nitre liquid pipeline with the pipeline of the 3rd control valve.
The present invention increases an interchanger sending back between the clear liquid pipeline of raw material light salt brine and film group rich nitre liquid pipeline, and the low temperature cold (3 ~ 5 DEG C) of effectively utilization is utilized, and rich nitre liquid temp is reduced to 20 ~ 25 DEG C by 30 ~ 35 DEG C; The rich nitre liquid of 20 ~ 25 DEG C is sent into the outlet of crystallizer circulation temperature lowering interchanger, mix with the cryogenic liquid of 3 ~ 5 DEG C, interchanger mouth, make cryogenic liquid temperature improve about 1 DEG C, eliminate the blocking of pipeline crystallisate; Exporting between rich nitre liquid and newly-increased interchanger in film group and bypass flow process is set, using in order to switching under abnormal conditions; In the rich nitre liquid outlet of newly-increased interchanger, arranging and directly go former rich nitre liquid to enter Crystallizer tube linear flow journey, using in order to switching under abnormal conditions.
The low-temperature receiver outlet of described interchanger is also by after being connected to the 4th control valve on described rich nitre liquid pipeline with the pipeline of the 3rd control valve.Prevent external circulation heat exchanging device outlet obstruction.
Described downstream tube group is communicated with light salt brine storage tank.The light salt brine supernatant liquor with heat energy be separated is stored, in order to recycling.
The first described control valve is flow control valve.Can Flow-rate adjustment be passed through, the heat exchange efficiency of controlled release external circulation heat exchanging device, control the temperature of rich nitre liquid.
The bottom of described crystallizer is cone.Be convenient to crystallization and be finally deposited in bottom, make the concentrated solution solid content of bottom reach more than 30%.
The bottom of described cone connects solid-liquid separation assembly.
Described solid-liquid separation assembly comprises magma pump, swirler and the whizzer that pipeline successively connects.Liquid containing crystallization is pumped into swirler through magma and improves solid-to-liquid ratio further, then enter whizzer and carry out solid-liquid separation, from salt solution, isolate saltcake (sal glauberi).
Described external circulation heat exchanging device connects refrigerator.The freezing and crystallizing operation of this embrane method denitrification apparatus can realize novel process, take full advantage of the refrigerating duty of refrigerator, reduce the rich nitre liquid temp entering crystallizer, and make full use of the feature of rich nitre liquid temp higher than external circulation heat exchanging device temperature out, rich nitre liquid is mixed with the cryogenic liquid after circulation temperature lowering, improve cryogenic liquid temperature, eliminate the problem of the easy Crystallization Plugging pipeline of circulation fluid.
Compared with prior art, the beneficial effect that a kind of anti-blocking embrane method denitrification apparatus of the present utility model has is: the utility model effectively solves embrane method denitrification apparatus mould temperature and controls unstable, refrigerator load is high, components of system as directed pipeline easily blocks, the fluctuation of brine system sulfate radical is large, system repeats the problems such as acting, has the distinguishing features such as energy-saving and cost-reducing, system run all right.Adopt this embrane method denitrification apparatus to run, the light salt brine supernatant liquor entering light salt brine storage tank is taken away the heat of rich nitre liquid in advance and will take away thermal energy storage, in order to recycling.Mould temperature is highly stable, the rich nitre liquid high flow capacity of film group or summer high temperature weather, during circulating water temperature height, refrigerator load is down to less than 75%, the rich nitre liquid heating through cooling of circulation temperature lowering heat exchanger exit pipeline, temperature suitably raises, and is no longer blocked by crystallisate, rinses without the need to using informal method, the liquid avoiding part containing sulfate radicals that flushing line causes high gets back to raw material light salt brine storage tank, make this device repeat acting, significantly energy-saving and cost-reducing, brine system sulfate radical content is stablized.Circulation temperature lowering heat exchanger exit pipeline blockage problem thoroughly solves, and denitrification apparatus runs more efficient, energy-conservation, stable.
Accompanying drawing explanation
Fig. 1 is the annexation schematic diagram of a kind of anti-blocking embrane method denitrification apparatus of the present utility model.
Wherein, 1, rich nitre liquid pipeline 2, crystallizer 3, recycle pump 4, external circulation heat exchanging device 5, the 5th control valve 6, interchanger 7, first control valve 8, second control valve 9, the 3rd control valve 10, the 4th control valve 11, distribution pipeline 12, supernatant liquor circulation line.
Embodiment
Fig. 1 is most preferred embodiment of the present utility model, is described further below in conjunction with accompanying drawing 1 pair of the utility model.
With reference to accompanying drawing 1: the anti-blocking embrane method denitrification apparatus of one of the present utility model, comprise rich nitre liquid pipeline 1, crystallizer 2, recycle pump 3, external circulation heat exchanging device 4, the 5th control valve 5, interchanger 6, first control valve 7, second control valve 8, the 3rd control valve 9, the 4th control valve 10, distribution pipeline 11 and supernatant liquor circulation line 12, rich nitre liquid pipeline 1 connects crystallizer 2, the bottom of crystallizer 2 is cone, and the bottom of cone connects the magma pump of pipeline connection successively, swirler and whizzer; The supernatant liquor circulation line 12 being connected with recycle pump 3 and external circulation heat exchanging device 4 is established on the top of crystallizer 2, and external circulation heat exchanging device 4 connects refrigerator; The thermal source inlet of interchanger 6 is by connecting the export pipeline of described recycle pump 3 with the pipeline of the first control valve 7, the thermal source outlet of interchanger 6 connects light salt brine storage tank, before the low-temperature receiver entrance of interchanger 6 passes through to be connected to the 4th control valve 10 on described rich nitre liquid pipeline 1 with the distribution pipeline 11 of the 5th control valve 5, the export pipeline of low-temperature receiver outlet by connecting described external circulation heat exchanging device 4 with the pipeline of the second control valve 8 of interchanger 6; The low-temperature receiver outlet of interchanger 6 is also by after being connected to the 4th control valve 10 on described rich nitre liquid pipeline 1 with the pipeline of the 3rd control valve 9; First control valve 7, second control valve 8, the 4th control valve 10 and the 5th control valve 5 are flow control valve.
Anti-blocking workflow is: newly-increased interchanger 6, for by from the clear liquid of crystallizer 2 and rich nitre liquid pipeline 1 heat exchange of film group, reduces into crystallizer richness nitre liquid temp, and then reduces refrigerator load, can easy crystallization control device 2 temperature.
Close the 4th control valve 10, open the 5th control valve 5 and the second control valve 8, the rich nitre liquid (being down to 20 ~ 25 DEG C) after interchanger 6 is lowered the temperature that film group is come enters external circulation heat exchanging device 4 outlet line, with external circulation heat exchanging device 4 low exit temperature liquid mixing, heat this cryogenic liquid, prevent external circulation heat exchanging device 4 outlet line Crystallization Plugging.
If external circulation heat exchanging device 4 outlet line Crystallization Plugging, when needing to rinse this pipeline, the first control valve 7 can be closed, use the rich nitre liquid of 32 DEG C to rinse external circulation heat exchanging device 4 outlet line.
Occur under abnormal conditions that interchanger 6 blocks, when rich nitre liquid cannot pass through newly-increased process flow operation, open the 4th control valve 10, recover former flow process.
There is external circulation heat exchanging device 4 outlet obstruction under abnormal conditions, when rich nitre liquid cannot be run by the second control valve 8, open the 3rd control valve 9, close the second control valve 8.
The above, it is only preferred embodiment of the present utility model, be not restriction the utility model being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solutions of the utility model content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (10)
1. an anti-blocking embrane method denitrification apparatus, comprise the crystallizer (2) connecting rich nitre liquid pipeline (1), the top of crystallizer (2) is also connected with the supernatant liquor circulation line (12) of recycle pump (3) and external circulation heat exchanging device (4), it is characterized in that: be also provided with supernatant liquor temperature adjustment component between described supernatant liquor circulation line (12) and rich nitre liquid pipeline (1).
2. the anti-blocking embrane method denitrification apparatus of one according to claim 1, it is characterized in that: described supernatant liquor temperature adjustment component comprises interchanger (6), the thermal source inlet of interchanger (6) is connected on described rich nitre liquid pipeline (1) by the distribution pipeline (11) with the 5th control valve (5), and the thermal source outlet of interchanger (6) is by connecting the supernatant liquor circulation line (12) of described external circulation heat exchanging device (4) outlet side with the pipeline of the second control valve (8).
3. the anti-blocking embrane method denitrification apparatus of one according to claim 2, it is characterized in that: the low-temperature receiver entrance of described interchanger (6) is by connecting the export pipeline of described recycle pump (3) with the pipeline of the first control valve (7), the low-temperature receiver outlet of interchanger (6) connects downstream tube group.
4. the anti-blocking embrane method denitrification apparatus of the one according to Claims 2 or 3, is characterized in that: the thermal source outlet of described interchanger (6) is also by being connected to the 4th control valve (10) outlet side on described rich nitre liquid pipeline (1) with the pipeline of the 3rd control valve (9).
5. the anti-blocking embrane method denitrification apparatus of one according to claim 3, is characterized in that: described downstream tube group is communicated with light salt brine storage tank.
6. the anti-blocking embrane method denitrification apparatus of one according to claim 3, is characterized in that: described the first control valve (7) is flow control valve.
7. the anti-blocking embrane method denitrification apparatus of one according to claim 1, is characterized in that: the bottom of described crystallizer (2) is cone.
8. the anti-blocking embrane method denitrification apparatus of one according to claim 7, is characterized in that: the bottom of described cone connects solid-liquid separation assembly.
9. the anti-blocking embrane method denitrification apparatus of one according to claim 8, is characterized in that: described solid-liquid separation assembly comprises magma pump, swirler and the whizzer that pipeline successively connects.
10. the anti-blocking embrane method denitrification apparatus of one according to claim 1, is characterized in that: described external circulation heat exchanging device (4) connects refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756480.4U CN205061595U (en) | 2015-09-28 | 2015-09-28 | Prevent stifled embrane method denitrification facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756480.4U CN205061595U (en) | 2015-09-28 | 2015-09-28 | Prevent stifled embrane method denitrification facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205061595U true CN205061595U (en) | 2016-03-02 |
Family
ID=55388176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520756480.4U Active CN205061595U (en) | 2015-09-28 | 2015-09-28 | Prevent stifled embrane method denitrification facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205061595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759565A (en) * | 2019-10-15 | 2020-02-07 | 广西金川有色金属有限公司 | Method for removing heat-stable salt in ionic liquid |
-
2015
- 2015-09-28 CN CN201520756480.4U patent/CN205061595U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759565A (en) * | 2019-10-15 | 2020-02-07 | 广西金川有色金属有限公司 | Method for removing heat-stable salt in ionic liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101041444A (en) | Method freezing separating mirabilite by brine solution | |
| CN202089783U (en) | Mirabilite brine freezing-crystallizing separating system | |
| CN201809467U (en) | Tank solution cooling system used in aluminum fabrication | |
| CN204057987U (en) | Saltcake continuous seepage freezing and crystallizing device | |
| CN205061595U (en) | Prevent stifled embrane method denitrification facility | |
| CN105016365A (en) | Salt discharging system and method in Bayer-process aluminium oxide production process | |
| CN100544804C (en) | Circulation-type crystallizer | |
| CN102512844B (en) | Device for controlling zinc sulfate heptahydrate cooling crystallization shape, and cooling method thereof | |
| CN205045820U (en) | Potassium perchlorate apparatus for producing | |
| CN202297195U (en) | Refrigeration denitration device for brine rich in nitro | |
| CN204319825U (en) | Equipment of crystallisation by cooling in a kind of refining oxalic acid production process | |
| CN110723857B (en) | High-salinity water concentration and crystallization treatment system and process | |
| CN102344152B (en) | Salt-making mother liquor is utilized to prepare the method for high-quality salt | |
| CN213143220U (en) | Environment-friendly water-saving water supply equipment | |
| CN203582514U (en) | Aluminum oxide seed precipitation decomposition tank | |
| CN204783875U (en) | Salt solution siphon circulating slot | |
| CN208933491U (en) | A kind of Novel electrolytic saline solution hypochlorite generator | |
| CN209322482U (en) | Salting-out crystallization Outer Cooler liquefied ammonia cooling device in procedure of producing soda under joint alkaline process | |
| CN202460184U (en) | Device for controlling cooled crystal shape of heptahydrate | |
| CN201033262Y (en) | Circulating type crystallizer | |
| CN201565154U (en) | Dextrose crystallization cooling device | |
| CN203320135U (en) | Cooling circulation loop | |
| CN220685278U (en) | Dirty liquid tank for liquid drainage of foil producing machine | |
| CN217041335U (en) | Nickel sulfate continuous crystallization integrated equipment | |
| CN220213981U (en) | Sodium sulfate freezing crystallization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |