CN208809593U - A kind of calcium ammonium nitrate production calcium nitrate solution press filteration system - Google Patents
A kind of calcium ammonium nitrate production calcium nitrate solution press filteration system Download PDFInfo
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- CN208809593U CN208809593U CN201821562674.0U CN201821562674U CN208809593U CN 208809593 U CN208809593 U CN 208809593U CN 201821562674 U CN201821562674 U CN 201821562674U CN 208809593 U CN208809593 U CN 208809593U
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Abstract
The utility model provides a kind of calcium ammonium nitrate production calcium nitrate solution press filteration system, comprising: filtering feeder trough, for holding calcium nitrate solution；Feed pump is filtered, for providing power for by-pass filtration feed；Level-one filter press, for carrying out level-one filters pressing to calcium nitrate solution；Level-one filtrate receiver, the filtrate obtained for holding level-one filters pressing；Level-one filtrate pump, for providing power for secondary filtration feed；Second level filter press, for carrying out second level filters pressing to the filtrate in level-one filtrate receiver；Stock tank again, the filter cake for obtaining to level-one filter press and second level filter press are starched again；It will pump again, and provide power for the filtering feed for slurry；Sludge filter press is used to carry out filters pressing to slurry, then starches filtrate and enter level-one filtrate receiver.The calcium ammonium nitrate production is safe and reliable with calcium nitrate solution press filteration system pressure-filtering process and system, operating cost is low, and product filters pressing performance is good, improves product quality, improves product yield.
Description
Technical field
The utility model belongs to agricultural calcium ammonium nitrate water-soluble fertilizer production field, produces more particularly, to a kind of calcium ammonium nitrate
Product production calcium nitrate solution press filteration system.
Background technique
At present calcium ammonium nitrate production in, the filters pressing of calcium nitrate mostly uses greatly by-pass filtration, the filter cake filtered out without
It crosses and starches again, be expelled directly out battery limit (BL), existing main problem is as follows:
(1) filtering is not thorough, and is remained in some solid impurities and is entered subsequent production in calcium nitrate solution, causes product
Quality reduce；
(2) filter cake makes to be mingled with product in filter cake, takes battery limit (BL) out of, cause product without starching again and sludge filter press
Yield decline.
To sum up, that there are filters pressings is insufficient for existing calcium nitrate filter-pressing method, product quality decline, product utilization rate decline etc.
Disadvantage.
Utility model content
In view of this, the utility model is directed to a kind of calcium ammonium nitrate production calcium nitrate solution press filteration system,
Pressure-filtering process and system is safe and reliable, operating cost is low, product filters pressing performance is good, can be improved product quality and product yield.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of calcium ammonium nitrate production calcium nitrate solution press filteration system, comprising:
Feeder trough is filtered, for holding calcium nitrate solution, the filtering feeder trough is equipped with inlet port and outlet port；
Feed pump is filtered, for providing power for by-pass filtration feed, the filtering feed pump goes out with filtering feeder trough
Material mouth connection；
Level-one filter press, for calcium nitrate solution carry out level-one filters pressing, the level-one filter press be equipped with the first filters pressing into
Mouth, the first filtrate (liquid and the first filtered solid outlet, the first filters pressing import are connect with filtering feed pump；
Level-one filtrate receiver, the filtrate obtained for holding level-one filters pressing, the level-one filtrate receiver are equipped with entrance and exit, institute
The entrance for stating level-one filtrate receiver is connect with the first filtrate (liquid of level-one filter press；
Level-one filtrate pump, for providing power for secondary filtration feed, the level-one filtrate pump goes out with level-one filtrate receiver
Mouth connection；
Second level filter press, for carrying out second level filters pressing to the filtrate in level-one filtrate receiver, the second level filter press is equipped with the
Two filters pressing imports, the second filtrate (liquid and the second filtered solid outlet, the second filters pressing import are connect with level-one filtrate pump；
Stock tank again, the filter cake for obtaining to level-one filter press and second level filter press are starched again, and the stock tank again is equipped with
The filter cake of filter cake entrance and slurry outlet, level-one filter press and the discharge of second level filter press passes through the entrance of filter cake entrance and starches again
Slot；
It will pump again, and provide power for the filtering feed for slurry, described will pump again exports with the slurry of stock tank again
Connection；
Sludge filter press, for carrying out filters pressing to slurry, the sludge filter press is equipped with slurry entrance, starches filter cake again
Outlet and starch filtrate (liquid again, slurry entrance with pump is connected again, then starch filtrate (liquid and connect with the entrance of level-one filtrate receiver.
Further, steam pipe coil is additionally provided in the filtering feeder trough, the entrance of steam pipe coil connects steam generator, steams
The outlet of vapour coil pipe connects steam condensate recover.
Further, steam pipe coil is additionally provided in the level-one filtrate receiver, the entrance of steam pipe coil connects steam generator, steams
The outlet of vapour coil pipe connects steam condensate recover.
Further, the level-one filters pressing belt for transporting filter cake is equipped at the first filtered solid outlet of the level-one filter press.
Further, the second level filters pressing belt for transporting filter cake is equipped at the second filtered solid outlet of the second level filter press.
Further, starching again for the sludge filter press is equipped with filter residue belt for transporting filter cake at filtered solid outlet.
Further, the mesh number of the filter cloth of the second level filter press is less than the mesh number of the filter cloth of level-one filter press.
Compared with the existing technology, calcium ammonium nitrate production described in the utility model has with calcium nitrate solution press filteration system
There is following advantage:
(1) calcium ammonium nitrate production calcium nitrate solution press filteration system described in the utility model can be molten to calcium nitrate
Liquid carries out multiple filters pressing, and compared with prior art, which has easy to operate, and control is stablized, securely and reliably, product quality and
The advantages of high income；The system multistage pressure filtering technique, is more energy-saving and environmentally friendly than traditional technology, has good economic value.Its
In, it, can be by calcium nitrate solution by refiltering for the setting of multistage filters pressing, the water-insoluble further removed in solution is miscellaneous
Matter improves the purity of product.Firsts and seconds can be press-filtered out the filter residue come and starched again, make filter residue by the setting for stock tank again
In the calcium nitrate solution that contains by sludge filter press, extract the calcium nitrate in filter cake, be recovered in System Solution, improve and produce
The yield of product.The setting for being back to primary filter tank pipeline for starching filtered fluid again, the calcium nitrate solution that sludge filter press comes out
In can also remaining filter residue, need to enter second level filter press filters pressing with the solution after by-pass filtration back to primary filter tank,
Improve the purity of calcium nitrate solution.
(2) it is additionally provided with steam pipe coil in filtering feeder trough described in the utility model, is additionally provided with steam in level-one filtrate receiver
Coil pipe can prevent calcium nitrate molten by providing certain temperature environment to steam pipe coil for filtering feeder trough and level-one filtrate receiver
The crystallization of liquid.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the structure of calcium ammonium nitrate production calcium nitrate solution press filteration system described in the utility model embodiment
Schematic diagram.
Description of symbols:
1- filters feeder trough；2- filters feed pump；3- level-one filter press；4- level-one filters pressing belt；5- level-one filtrate receiver；6-
Level-one filtrate pump；7- second level filter press；8- second level filters pressing belt；9- stock tank again；10- stock pump again；11- sludge filter press；12- filter
Slag crust band；13- steam pipe coil.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of calcium ammonium nitrate production calcium nitrate solution press filteration system, comprising:
Feeder trough 1 is filtered, for holding calcium nitrate solution, the filtering feeder trough 1 is equipped with inlet port and outlet port；
Feed pump 2 is filtered, for providing power, the filtering feed pump 2 and filtering feeder trough 1 for by-pass filtration feed
Discharge port connection；
Level-one filter press 3, for carrying out level-one filters pressing to calcium nitrate solution, the level-one filter press 3 is equipped with the first filters pressing
Import, the first filtrate (liquid and the first filtered solid outlet, the first filters pressing import are connect with filtering feed pump 2；
Level-one filtrate receiver 5, the filtrate obtained for holding level-one filters pressing, the level-one filtrate receiver 5 are equipped with entrance and exit,
The entrance of the level-one filtrate receiver 5 is connect with the first filtrate (liquid of level-one filter press 3；
Level-one filtrate pump 6, for providing power, the level-one filtrate pump 6 and level-one filtrate receiver 5 for secondary filtration feed
Outlet connection；
Second level filter press 7, for carrying out second level filters pressing to the filtrate in level-one filtrate receiver 5, the second level filter press 7 is equipped with
Second filters pressing import, the second filtrate (liquid and the second filtered solid outlet, the second filters pressing import are connect with level-one filtrate pump 6；
Stock tank 9 again, the filter cake for obtaining to level-one filter press 3 and second level filter press 7 are starched again, stock tank 9 again
It is exported equipped with filter cake entrance and slurry, the filter cake that level-one filter press 3 and second level filter press 7 are discharged passes through filter cake entrance and enters
Stock tank 9 again；
10 will be pumped again, provide power for the filtering feed for slurry, it is described again by the slurry of pump 10 and stock tank 9 again
Outlet connection；
Sludge filter press 11, for carrying out filters pressing to slurry, the sludge filter press 11 is equipped with slurry entrance, starches again
Filtered solid outlet and starch filtrate (liquid again, slurry entrance with pump 10 is connect again, then starch entering for filtrate (liquid and level-one filtrate receiver 5
Mouth connection.
Wherein, the mesh number of the filter cloth of the second level filter press 7 is less than the mesh number of the filter cloth of level-one filter press 3；The level-one
Filter press 3, second level filter press 7 and sludge filter press 11 can use chamber-type press filter.
Preferably, steam pipe coil 13 is additionally provided in the filtering feeder trough 1, the entrance of steam pipe coil 13 connects steam generation
The outlet of device, steam pipe coil connects steam condensate recover.
Steam pipe coil 13 is additionally provided in the level-one filtrate receiver 5, the entrance of steam pipe coil 13 connects steam generator, steam
The outlet of coil pipe connects steam condensate recover.
The steam generator and steam condensate recover can be using any one models in the prior art.
Illustratively, the level-one filters pressing skin for transporting filter cake is equipped at the first filtered solid outlet of the level-one filter press 3
Band 4.
The second level filters pressing belt 8 for transporting filter cake is equipped at second filtered solid outlet of the second level filter press 7.
The sludge filter press 11 starches the filter residue belt 12 being equipped at filtered solid outlet for transporting filter cake again.
Tell about the operation of the device in detail with reference to the accompanying drawing:
The calcium nitrate solution in feeder trough 1 is filtered under the pressure effect of filtering feed pump 2, is sent to level-one filter press 3
Each filter chamber is separated solid and liquid by filter cloth.Filter residue is formed on filter cloth, until forming filter cake full of filter chamber.Calcium nitrate
Filtrate passes through filter cloth and flow to lower section fluid hole channel along filter plate groove, into level-one filtrate receiver 5.Filtering finishes, and can be passed through clear
Wash water washs filter residue.After washing, it is also passed through compressed air sometimes, removes remaining cleaning solution.After filtering, level-one pressure is opened
Filter 3, removal filter cake, filter cake enter stock tank 9 again by level-one filters pressing belt 4.Filter cloth is cleaned, filter plate is compressed again, under starting
One working cycles.
Level-one filter press 3 can remove the most of water-insoluble impurity in calcium nitrate solution, wherein nitric acid in order to prevent
The crystallization of calcium solution needs to be passed through low-pressure steam in the steam pipe coil 13 in filtering feeder trough 1 to guarantee calcium nitrate solution temperature
Degree maintains 60 DEG C or more.
The calcium nitrate solution after by-pass filtration in level-one filtrate receiver 5 is sent under the pressure effect of level-one filtrate pump 6
Solid and liquid are separated by filter cloth into each filter chamber of second level filter press 7.Filter residue is formed on filter cloth, until being full of filter chamber shape
At filter cake.Calcium nitrate filtrate passes through filter cloth and flow to lower section fluid hole channel along filter plate groove, into subsequent processing.It has filtered
Finish, cleaning water washing filter residue can be passed through.After washing, it is also passed through compressed air sometimes, removes remaining cleaning solution.Filtering terminates
Afterwards, second level filter press 7, removal filter cake are opened, filter cake enters stock tank 9 again by second level filters pressing belt 8.Filter cloth is cleaned, is pressed again
Tight filter plate starts subsequent work circulation.
7 versus primary filter press 3 of second level filter press, filter cloth smaller using mesh number, more accurate can further remove nitre
Water-insoluble impurity in sour calcium solution, make postorder proportion, evaporation and granulating working procedure calcium nitrate solution in impurity content it is lower,
Water-insoluble in the calcium ammonium nitrate product produced reduces.
Wherein, the crystallization of calcium nitrate solution in order to prevent, in level-one filtrate receiver 5 be need to be passed through in steam pipe coil 13 it is low
Steam is pressed, to guarantee that calcium nitrate solution temperature maintains 60 DEG C or more.
Level-one filter press 3 and 7 filter cake of second level filter press are entered by level-one filters pressing belt 4 and second level filters pressing belt 8 to be starched again
Slot 9 is starched filter cake using water is washed cloth again, and slurry is sent into each filter chamber of sludge filter press 11 under the pressure effect of stock pump 10 again,
By filter cloth, solid and liquid are separated.Calcium nitrate filtrate passes through filter cloth and flow to lower section fluid hole channel along filter plate groove, returns
Level-one filtrate receiver 5 is returned to, enters second level filter press 7 together with the calcium nitrate solution in level-one filtrate receiver and filters, filter residue passes through filter
Slag crust band 12 sends out battery limit (BL).
Solution after the water that washes cloth is starched again is about 60 DEG C, and calcium nitrate solution is contained in slurry, by sludge filter press 11
It is press-filtered out the calcium nitrate solution contained in filter cake, the solid impurity contained in slurry is more, so the calcium nitrate after filters pressing is molten
Also contain a small amount of solid impurity in liquid, needs to carry out secondary filters pressing back in level-one filtrate receiver 5.The filter of this process recycling
Nitrate nitrogen and water-soluble calcium mass content in product can be improved in calcium nitrate solution in cake.
Wherein, then in stock tank the water for starching needs again uses the water that washes cloth, and can contain nitre in the water that washes cloth after washing cloth because of filtering
Sour calcium solution, then stock tank starch the filtrate after filters pressing again and contain calcium nitrate solution, and the above two-part calcium nitrate solution will be recovered to
In the calcium nitrate solution of system, to enter subsequent evaporization process.Since the nitric acid calcium concentration of wash cloth water and slurry is very low, directly
After connecing back in System Solution, pressure is brought to subsequent evaporation, needs to consume more steam to evaporate the water of system
Part, the water that will wash cloth recycles, and using washing cloth, water is starched again, is alleviated the moisture content in system, is reduced required for subsequent evaporation
Steam.
It generally can only achieve qualified product requirement with calcium ammonium nitrate product for the agricultural that the prior art is produced, and this reality
It can achieve Grade A requirement with the novel nitric acid ammonia calcium product produced.
Calcium ammonium nitrate product index provided by the utility model and the comparison of existing product index are as shown in table 1.
1 agricultural calcium ammonium nitrate product requirement of table
The water-insoluble in solution can more effectively be removed using multistage filters pressing during the utility model, made in product
Water insoluble matter content reduce, meanwhile, contain calcium nitrate in by-pass filtration and secondary filtration filter residue, by being starched again in stock tank again,
Sludge filter press is press-filtered out calcium nitrate solution and is recovered in System Solution, improves the matter of the nitrate nitrogen and water-soluble calcium in product
Measure score.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of calcium ammonium nitrate production calcium nitrate solution press filteration system, it is characterised in that: include:
It filters feeder trough (1), for holding calcium nitrate solution, the filtering feeder trough (1) is equipped with inlet port and outlet port；
It filters feed pump (2), for providing power, the filtering feed pump (2) and filtering feeder trough (1) for by-pass filtration feed
Discharge port connection；
Level-one filter press (3), for carrying out level-one filters pressing to calcium nitrate solution, the level-one filter press (3) is equipped with the first filters pressing
Import, the first filtrate (liquid and the first filtered solid outlet, the first filters pressing import are connect with filtering feed pump (2)；
Level-one filtrate receiver (5), the filtrate obtained for holding level-one filters pressing, the level-one filtrate receiver (5) are equipped with entrance and exit,
The entrance of the level-one filtrate receiver (5) is connect with the first filtrate (liquid of level-one filter press (3)；
Level-one filtrate pump (6) provides power for being fed for secondary filtration, the level-one filtrate pump (6) and level-one filtrate receiver (5)
Outlet connection；
Second level filter press (7), for carrying out second level filters pressing to the filtrate in level-one filtrate receiver (5), the second level filter press (7) is set
There are the second filters pressing import, the second filtrate (liquid and the second filtered solid outlet, the second filters pressing import is connect with level-one filtrate pump (6)；
Stock tank (9) again, the filter cake for obtaining to level-one filter press (3) and second level filter press (7) are starched again, the stock tank again
(9) it is equipped with filter cake entrance and slurry exports, the filter cake of level-one filter press (3) and second level filter press (7) discharge passes through filter cake
Entrance enters stock tank (9) again；
(10) will be pumped again, and provide power for the filtering feed for slurry, it is described again to starch pump (10) and stock tank again (9) again
Liquid outlet connection；
Sludge filter press (11), for carrying out filters pressing to slurry, the sludge filter press (11) is equipped with slurry entrance, starches again
Filtered solid outlet and starch filtrate (liquid again, slurry entrance with pump (10) is connect again, then starch filtrate (liquid and level-one filtrate receiver (5)
Entrance connection.
2. calcium ammonium nitrate production calcium nitrate solution press filteration system according to claim 1, it is characterised in that: described
It is additionally provided with steam pipe coil (13) in filtering feeder trough (1), the entrance of steam pipe coil (13) connects steam generator, steam pipe coil
Outlet connection steam condensate recover.
3. calcium ammonium nitrate production calcium nitrate solution press filteration system according to claim 1, it is characterised in that: described
It is additionally provided with steam pipe coil (13) in level-one filtrate receiver (5), the entrance of steam pipe coil (13) connects steam generator, steam pipe coil
Outlet connection steam condensate recover.
4. calcium ammonium nitrate production calcium nitrate solution press filteration system according to claim 1, it is characterised in that: described
The level-one filters pressing belt (4) for transporting filter cake is equipped at first filtered solid outlet of level-one filter press (3).
5. calcium ammonium nitrate production calcium nitrate solution press filteration system according to claim 1, it is characterised in that: described
The second level filters pressing belt (8) for transporting filter cake is equipped at second filtered solid outlet of second level filter press (7).
6. calcium ammonium nitrate production calcium nitrate solution press filteration system according to claim 1, it is characterised in that: described
Sludge filter press (11) starches the filter residue belt (12) being equipped at filtered solid outlet for transporting filter cake again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821562674.0U CN208809593U (en) | 2018-09-25 | 2018-09-25 | A kind of calcium ammonium nitrate production calcium nitrate solution press filteration system |
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| CN201821562674.0U CN208809593U (en) | 2018-09-25 | 2018-09-25 | A kind of calcium ammonium nitrate production calcium nitrate solution press filteration system |
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| CN208809593U true CN208809593U (en) | 2019-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113082803A (en) * | 2021-05-17 | 2021-07-09 | 万宝矿产有限公司 | Ore pulp filter-pressing and filter cake size mixing system |
-
2018
- 2018-09-25 CN CN201821562674.0U patent/CN208809593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113082803A (en) * | 2021-05-17 | 2021-07-09 | 万宝矿产有限公司 | Ore pulp filter-pressing and filter cake size mixing system |
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Address after: 2-504, Beichen building, southwest of the intersection of Beijing Tianjin highway and Longzhou Road, BeiCang Town, Beichen District, Tianjin Patentee after: Tianjin Huajing Engineering Technology Co.,Ltd. Address before: Room 504, building 2, Beichen building, Beichen District, Tianjin 300400 Patentee before: TIANJIN HUAJING CHEMICAL ENGINEERING NEW TECHNOLOGY DEVELOPMENT Co.,Ltd. |