CN203998985U - A kind of device of producing full water-soluble sheet magnesium nitrate - Google Patents
A kind of device of producing full water-soluble sheet magnesium nitrate Download PDFInfo
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- CN203998985U CN203998985U CN201420403660.XU CN201420403660U CN203998985U CN 203998985 U CN203998985 U CN 203998985U CN 201420403660 U CN201420403660 U CN 201420403660U CN 203998985 U CN203998985 U CN 203998985U
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Abstract
The utility model relates to the production technique of chemical fertilizer field magnesium nitrate, is specially a kind of device of producing full water-soluble sheet magnesium nitrate.Solved current magnesium nitrate product water dissolubility bad, easily caking and purity technical problem on the low side.Produce a device for full water-soluble sheet magnesium nitrate, comprise dilute acid bath and magnesium oxide groove, the two discharge port is connected with reactor jointly; The discharge port of molten hopper is connected with second evaporator, and the steam inlet of second evaporator is also connected with steam boiler, and second evaporator discharge port is connected with two cooling reactors, and the discharge port of two cooling reactors is connected with steel band tablets press jointly; Described two cooling reactors are to be connected with the feeding mouth of the feeding device of steel band tablets press.The utility model is by the adjustment of production unit, realized product and not obviously improved by effect of natural conditions and water-soluble and content, fundamentally solved the problem that the prior aries such as magnesium nitrate product poorly water-soluble, purity is on the low side, easy caking exist.
Description
Technical field
The utility model relates to the production technique of chemical fertilizer field magnesium nitrate, is specially a kind of device of producing full water-soluble sheet magnesium nitrate.
Background technology
The magnesium nitrate hexahydrate crystal (or particle) for fertilizer trade that prior art is produced, in order to prevent soil acidification, require product pH scope 6 ~ 7, but under this pH condition, when product is water-soluble, there will be the cotton-shaped water-insoluble of macroscopic white, spray very easily occurs in spraying process stifled, this has just limited this product in the application spraying in establishing greatly; Because there is a large amount of dissociating water molecules on crystal (or particle) surface, exist, this just causes product aspect packed and transported, easily to occur the plate that lumps, and is unfavorable for long-distance transport and lengthy warehousing simultaneously; And be subject to the impact of water-insoluble and a large amount of dissociating water molecules of product surface, directly caused product purity on the low side.Therefore need a kind of magnesium nitrate production equipment that can effectively can effectively reduce product caking situation, good water solubility and content raising.
Summary of the invention
Current magnesium nitrate product water dissolubility is bad, easily caking and purity technical problem on the low side in order to solve for the utility model, and a kind of device of producing full water-soluble sheet magnesium nitrate is provided.
The utility model is to adopt following technical scheme to realize: a kind of device of producing full water-soluble sheet magnesium nitrate, comprise dilute acid bath and magnesium oxide groove, and the two discharge port is connected with reactor jointly; The discharge port of reactor is connected with pressure filter, and pressure filter discharge port is connected with clear liquid groove, and clear liquid groove discharge port is connected with single vaporization device; The steam-in of single vaporization device is connected with steam boiler, and the discharge port of single vaporization device is connected with crystallization kettle, and the discharge port of crystallization kettle is connected with whizzer; Discharge hole of centrifugal machine is connected with molten hopper, and the steam-in of molten hopper is connected with steam boiler; The discharge port of molten hopper is connected with second evaporator, and the steam inlet of second evaporator is also connected with steam boiler, and second evaporator discharge port is connected with two cooling reactors, and the discharge port of two cooling reactors is connected with steel band tablets press jointly; Described two cooling reactors are to be connected with the feeding mouth of the feeding device of steel band tablets press.
When carrying out actual production, in dilute acid bath, fill rare nitric acid, in magnesium oxide groove, fill magnesium oxide, the two is connected with reactor by pipeline, the bottom of reactor is connected with plate and frame(type)filter press by pipeline, be used for filtering magnesium nitrate neutralizer, steam boiler to once, second evaporator and molten hopper provide steam.
Method while adopting the utility model to produce magnesium nitrate is as follows: a kind of method of producing full water-soluble sheet magnesium nitrate, comprise the following steps: (a) by 1:2 mol ratio, add reactor to carry out neutralization reaction in magnesium oxide and rare nitric acid (dilute nitric acid solution concentration 40%), temperature is controlled at 70 ~ 80 ℃ of stirring reaction 1.5 ~ 3h, regulates reaction solution pH to 6.5 ~ 7.5 afterwards with magnesium oxide; (b) the magnesium nitrate neutralizer obtaining enters Filter Press, obtains transparent filtrate; (c) filtrate is pumped into single vaporization device and carry out evaporation concentration, being evaporated to proportion is 1.100 ~ 1.320g/cm
3; (d) magnesium nitrate solution after concentrated is pumped into crystallisation by cooling still, add rare nitric acid (rare concentration of nitric acid 40%) pH value of solution is adjusted to 3 ~ 5, stir coolingly, when circulating water is cooled to 25 ~ 40 ℃, adularescent magnesium nitrate crystal is separated out, and now stops stirring; (e) magnesium nitrate crystal is imported to whizzer together with mother liquor and carry out lock out operation, make white needles magnesium nitrate crystal; (f) white magnesium nitrate crystal is introduced to molten hopper, pass into steam heating and dissolve, and to introduce concentrate to proportion in second evaporator be 1.280 ~ 1.610g/cm
3; (g) concentrated solution enters steel band tablets press, generates semisphere sheet magnesium nitrate finished product.
Device described in the utility model has increased double evaporation-cooling device on the basis of existing apparatus (can be realized and magnesium nitrate crystal be put into molten hopper the technique of dissolving and by molten hopper solution double evaporation-cooling concentrate; eliminated insolubles---unreacted is magnesium oxide completely); and adopt steel band tablets press to carry out last granulation; the product of producing is transparent hemispherical round sheet; diameter is at 1 ~ 50mm, and has that good water solubility, purity are high, the feature of prevented from caking.Semisphere flaked product specific surface area is large, and prevented from caking is conducive to transportation.
Described steel band tablets press can melt upstream process heat state material by the uniform thereunder at the uniform velocity mobile steel band of tablets press distributor; steel band below is provided with continuous spray, refrigerating unit; force material on steel band moving process be able to fast cooling, solidify, thereby reach the object of granulating and forming.When concentrated solution enters steel band, temperature is controlled at 65 ~ 100 ℃, when temperature is cooled to 20 ~ 30 ℃, is solidified as semisphere flap.
The utility model is by the adjustment of production unit, having realized product can not be subject to effect of natural conditions (as: at Various Seasonal and temperature, product does not lump substantially), and water-soluble and content obviously improves, fundamentally solved the problem that the prior aries such as magnesium nitrate product poorly water-soluble, purity is on the low side, easy caking exist, the product obtaining is convenient to store transportation, is very suitable for the spraying operation in farmland, and product purity high (99 ~ 99.5%), respond well after Fertilizer application.
Accompanying drawing explanation
Fig. 1 the utility model structural representation.
Fig. 2 steel band granulator structure schematic diagram.
1-dilute acid bath, 2-magnesium oxide groove, 3-reactor, 4-plate and frame(type)filter press; 5-clear liquid groove, 6-single vaporization device, 7-crystallization kettle, 8-whizzer; the molten hopper of 9-, the molten hopper steam inlet of 9a-, the molten hopper vapour outlet of 9b-, 10-second evaporator; 10a-second evaporator steam inlet, 10b-second evaporator vapour outlet, 11-steam boiler, 12-cooling reactor; 13-steel band tablets press, 14-feeding device, 15-cooling tank; 15a-entrance of cooling water, 15b-cooling water outlet, 16-crusher.
Embodiment
Produce a device for full water-soluble sheet magnesium nitrate, comprise dilute acid bath 1 and magnesium oxide groove 2, the two discharge port is connected with reactor 3 jointly; The discharge port of reactor 3 is connected with pressure filter 4, and pressure filter 4 discharge ports are connected with clear liquid groove 5, and clear liquid groove 5 discharge ports are connected with single vaporization device 6; The steam-in of single vaporization device 6 is connected with steam boiler 11, and the discharge port of single vaporization device 6 is connected with crystallization kettle 7, and the discharge port of crystallization kettle 7 is connected with whizzer 8; Whizzer 8 discharge ports are connected with molten hopper 9, and the steam-in of molten hopper 9 is connected with steam boiler 11; The discharge port of molten hopper 9 is connected with second evaporator 10, and the steam inlet of second evaporator 10 is also connected with steam boiler 11, and the discharge port that second evaporator 10 discharge ports are connected with 12, two cooling reactors 12 of two cooling reactors is connected with steel band tablets press 13 jointly; Described two cooling reactors 12 are to be connected with the feeding mouth of the feeding device 14 of steel band tablets press 13.
On connecting pipeline between described each container, be equipped with the vacuum pump for pumping solution.
Described pressure filter 4 adopts plate and frame(type)filter press.Plate and frame(type)filter press strong operability, wide accommodation, good filtration effect.
Arrow in accompanying drawing 1 represents the flow direction of solution or material.
Passing into steam melts the magnesium nitrate crystal in molten hopper 9, the magnesium nitrate solution having melted is sent into second evaporator by vacuum pump, after being evaporated to 140-160 ℃ afterwards in second evaporator, by vacuum pump, import two cooling reactors, finally enter prilling granulator 14 and carry out granulation.Wherein molten hopper, second evaporator, cooling reactor are connected with steel band granulator granulation device by pipeline successively.On molten hopper and second evaporator, offer steam inlet and outlet.On steel band tablets press, offer entrance of cooling water and outlet, steam inlet wherein, vapour outlet adopts upper entering and lower leaving, and entrance of cooling water 15a, cooling water outlet 15b adopt bottom in and top out.Steel band tablets press adopts single steel band granulation flaker that above Nereid's great waves steel band Science and Technology Ltd. produces, device numbering: JT3000-1.5-17.5.
Claims (3)
1. produce a device for full water-soluble sheet magnesium nitrate, comprise dilute acid bath (1) and magnesium oxide groove (2), the two discharge port is connected with reactor (3) jointly; The discharge port of reactor (3) is connected with pressure filter (4), and pressure filter (4) discharge port is connected with clear liquid groove (5), and clear liquid groove (5) discharge port is connected with single vaporization device (6); The steam-in of single vaporization device (6) is connected with steam boiler (11), and the discharge port of single vaporization device (6) is connected with crystallization kettle (7), and the discharge port of crystallization kettle (7) is connected with whizzer (8); It is characterized in that, whizzer (8) discharge port is connected with molten hopper (9), and the steam-in of molten hopper (9) is connected with steam boiler (11); The discharge port of molten hopper (9) is connected with second evaporator (10), the steam inlet of second evaporator (10) is also connected with steam boiler (11), second evaporator (10) discharge port is connected with two cooling reactors (12), and the discharge port of two cooling reactors (12) is connected with steel band tablets press (13) jointly; Described two cooling reactors (12) are to be connected with the feeding mouth of the feeding device (14) of steel band tablets press (13).
2. a kind of device of producing full water-soluble sheet magnesium nitrate as claimed in claim 1, is characterized in that, on the connecting pipeline between described each container, is equipped with the vacuum pump for pumping solution.
3. a kind of device of producing full water-soluble sheet magnesium nitrate as claimed in claim 1 or 2, is characterized in that, described pressure filter (4) adopts plate and frame(type)filter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403660.XU CN203998985U (en) | 2014-07-22 | 2014-07-22 | A kind of device of producing full water-soluble sheet magnesium nitrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403660.XU CN203998985U (en) | 2014-07-22 | 2014-07-22 | A kind of device of producing full water-soluble sheet magnesium nitrate |
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| CN203998985U true CN203998985U (en) | 2014-12-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621461A (en) * | 2015-12-28 | 2016-06-01 | 大连百傲化学股份有限公司 | Continuous magnesium nitrate production device and technological method |
| CN106830021A (en) * | 2017-03-20 | 2017-06-13 | 青海盐湖工业股份有限公司 | A kind of preparation technology of magnesium nitrate hexahydrate |
| CN109019645A (en) * | 2018-09-25 | 2018-12-18 | 天津华景化工新技术开发有限公司 | A kind of production system and production method of bulky grain magnesium nitrate |
| CN109775737A (en) * | 2019-03-22 | 2019-05-21 | 宁夏润夏能源化工有限公司 | The preparation method of magnesium nitrate solution |
-
2014
- 2014-07-22 CN CN201420403660.XU patent/CN203998985U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621461A (en) * | 2015-12-28 | 2016-06-01 | 大连百傲化学股份有限公司 | Continuous magnesium nitrate production device and technological method |
| CN105621461B (en) * | 2015-12-28 | 2017-10-24 | 大连百傲化学股份有限公司 | The device and process of a kind of continuous production magnesium nitrate |
| CN106830021A (en) * | 2017-03-20 | 2017-06-13 | 青海盐湖工业股份有限公司 | A kind of preparation technology of magnesium nitrate hexahydrate |
| CN109019645A (en) * | 2018-09-25 | 2018-12-18 | 天津华景化工新技术开发有限公司 | A kind of production system and production method of bulky grain magnesium nitrate |
| CN109019645B (en) * | 2018-09-25 | 2023-07-14 | 天津华景工程技术有限公司 | Production system and production method of large-particle magnesium nitrate |
| CN109775737A (en) * | 2019-03-22 | 2019-05-21 | 宁夏润夏能源化工有限公司 | The preparation method of magnesium nitrate solution |
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Effective date of registration: 20170109 Address after: 030500 Shanxi city of Lvliang province Jiaocheng Yiwang Village Patentee after: Shanxi Jiaocheng Hongxing Chemicals Co., Ltd. Address before: 030006 Shanxi Province, Taiyuan City Pro Yin North No. 368 hydraulic building 14 layer Patentee before: Lu Yongkuan |