CN109095491A - A kind of microwave dehydration method of the inorganic salts containing the crystallization water - Google Patents
A kind of microwave dehydration method of the inorganic salts containing the crystallization water Download PDFInfo
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- CN109095491A CN109095491A CN201810992508.2A CN201810992508A CN109095491A CN 109095491 A CN109095491 A CN 109095491A CN 201810992508 A CN201810992508 A CN 201810992508A CN 109095491 A CN109095491 A CN 109095491A
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- Prior art keywords
- microwave
- crystallization water
- inorganic salts
- fluidized bed
- water
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/36—Nitrates
- C01F11/44—Concentrating; Crystallisating; Dehydrating; Preventing the absorption of moisture or caking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/126—Microwaves
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/18—Dehydration
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/38—Magnesium nitrates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/40—Magnesium sulfates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention belongs to inorganic salts manufacturing technology fields, more particularly to a kind of microwave dehydration method of inorganic salts containing the crystallization water, inorganic salt crystal containing the crystallization water is suspended in watering area using fluidized bed, use frequency for the microwave of 2.45GHz interacts with the inorganic salts crystal containing the crystallization water and is dehydrated, fluidized bed region temperature is controlled in 50 DEG C of -180 DEG C of ranges, residence time of the material in system keeps 3min-20min, the dewatering has the characteristics that dehydration uniformity is good, low energy consumption, dewatering time is short, product granularity is uniform, is suitable for serialization mass production.
Description
Technical field
The invention belongs to inorganic salts manufacturing technology fields, and in particular to a kind of microwave dehydration side of the inorganic salts containing the crystallization water
Method.
Background technique
The dehydration inorganic salts being prepared by the inorganic salts containing the crystallization water are important industrial raw materials, the nothing containing the crystallization water
The traditional dewatering of machine salt is the inorganic salts heating for dissolving further evaporation water removal that will contain the crystallization water, and this method needs very high
Temperature could thoroughly deviate from the crystallization water, therefore production efficiency is lower, and energy consumption is also higher, and is easy agglomeration, leads to post-processing
Journey is extremely difficult.
Traditional barium hydroxide dehydrating process is divided into the crystallization good dehydration of organic solvent method of thermal dehydration method, wherein
Snead process dehydration produces barium monohydrate using more, by crystallization thermal dehydration, and the vapor of generation, which utilizes, is free of two
The hot gas of carbonoxide is taken away.Chinese patent CN871011972 discloses barium hydroxide octahydrate dehydration preparation one hydronium(ion) oxidation
Barium new process is to be separated the method that the water of abjection has stepped through azeotropic using the method for organic solvent reflux, this
The dewatering time of a little methods is long, process conditions are harsh, is difficult to control.
Summary of the invention
Agglomeration or the higher technical problem of energy consumption, the present invention are easy to solve the existing inorganic salts dehydration containing the crystallization water
Provide a kind of dewatering of high-efficiency low energy consumption based on microwave dehydration principle.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of microwave of the inorganic salts containing the crystallization water is de-
Inorganic salt crystal containing the crystallization water is sent to the fluidized bed with microwave generator, will be contained using dry air air-flow by water method
Watering area of the inorganic salts crystal suspension of the crystallization water in fluidized bed, using the microwave of microwave generator generation and containing the crystallization water
Inorganic salts crystal interaction and be dehydrated, microwave generator generate microwave frequency be 2.45GHz ± 25Hz, control fluidized bed
Regional temperature is controlled at 50 DEG C -180 DEG C, and retention time of the inorganic salt crystal on fluidized bed containing the crystallization water is 3min-
20min。
Inorganic salt crystal containing the crystallization water be four water-calcium nitrate, magnesium nitrate hexahydrate, epsom salt, barium hydroxide,
One of sal glauberi.
Compared with prior art, the present invention specifically having the beneficial effect that:
One, this microwave dehydration method uniformity is good, and low energy consumption, and dewatering time greatly shortens.
Two, this microwave dehydration method can avoid material agglomeration during the dehydration process, convenient for the conveying and packaging of material.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Specific embodiment is closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Embodiment one
A kind of microwave dehydration method of the inorganic salts containing the crystallization water send the magnesium nitrate hexahydrate containing the crystallization water to 12 sets of microwaves
In the fluidized bed of generator, the output power of microwave generator is 1000W, and the microwave frequency that microwave generator generates is
Magnesium nitrate hexahydrate is suspended in the watering area in fluidized bed using dry air air-flow, is generated using microwave generator by 2.45GHz
Microwave and magnesium nitrate hexahydrate interact and be dehydrated, control fluidized bed region temperature control at 50 DEG C, contain magnesium nitrate hexahydrate exist
Retention time on fluidized bed is 20min, by dewatered anhydrous nitric acid magnesium continue to be sent into using dry air air-flow cooling area into
Row packaging, the content of sampling analysis anhydrous nitric acid magnesium are 98.5%.
Embodiment two
Content is greater than 96% magnesium nitrate hexahydrate by a kind of microwave dehydration method of the inorganic salts containing the crystallization water, is used for air draught
By magnesium nitrate hexahydrate crystal suspension in watering area, watering area arranges that 20 sets of delivery efficiencies are the microwave generator of 1000W, micro-
Wave frequency rate is 2.45GHz, and microwave and magnesium nitrate hexahydrate crystal are acted on and be dehydrated, and microwave and the crystallization water in magnesium nitrate hexahydrate are direct
It acting on and generates heat, make moisture vaporization, control fluidized bed region temperature is 150 DEG C, and residence time of material is maintained at 19min,
Then, dewatered material is continued to cool down using dry air air-flow feeding cooling area, drops to 50 DEG C and packed, is sampled
The content for analyzing anhydrous nitric acid magnesium is 99.3%.
Embodiment three
Content is greater than 96% magnesium nitrate hexahydrate by a kind of microwave dehydration method of the inorganic salts containing the crystallization water, is used for air draught
By magnesium nitrate hexahydrate crystal suspension in watering area, watering area arranges that 20 sets of delivery efficiencies are the microwave generator of 1000W, micro-
Wave frequency rate is 2.45GHz, and microwave and magnesium nitrate hexahydrate crystal are acted on and be dehydrated, and microwave and the crystallization water in magnesium nitrate hexahydrate are direct
It acting on and generates heat, make moisture vaporization, control fluidized bed region temperature is 180 DEG C, and residence time of material is maintained at 20min,
Then, dewatered material is continued to cool down using dry air air-flow feeding cooling area, drops to 50 DEG C and packed, is sampled
The content for analyzing anhydrous nitric acid magnesium is 99.3%.
Example IV
Content is greater than 95% barium hydroxide dry air gas by a kind of microwave dehydration method of the inorganic salts containing the crystallization water
Stream is suspended in watering area, and watering area arranges that 20 sets of output powers are the microwave generator of 1000W, and microwave frequency is
2.45GHz, microwave and barium hydroxide crystal are acted on and are dehydrated, by the temperature of sensor follow-on test watering area, when
When temperature reaches 80 DEG C, microwave dehydration handles 5min, and hopper is sent to cooling area and is cooled down, 50 DEG C or more is dropped to and is wrapped
Dress, the content of sampling analysis barium monohydrate are 96.5%.
Embodiment five
Content is greater than 95% barium hydroxide dry air gas by a kind of microwave dehydration method of the inorganic salts containing the crystallization water
Stream is suspended in watering area, and watering area arranges that 20 sets of output powers are the microwave generator of 1000W, and microwave frequency is
2.45GHz, microwave and barium hydroxide crystal are acted on and are dehydrated, by the temperature of sensor follow-on test watering area, when
When temperature reaches 80 DEG C, microwave dehydration handles 10min, then packs hopper feeding cooling area, one water hydrogen of sampling analysis
The content of barium monoxide is 97.7%.
Embodiment six
Content is greater than 95% four water-calcium nitrate dry air air-flow by a kind of microwave dehydration method of the inorganic salts containing the crystallization water
Be suspended in watering area, watering area arrange 20 sets output powers for the microwave generator of 1000W, microwave frequency 2.45GHz,
Microwave and four water-calcium nitrate crystal are acted on and are dehydrated, by the temperature of sensor follow-on test watering area, when temperature reaches 120
DEG C when, microwave dehydration handle 10min, then by hopper feeding cooling area pack, sampling analysis barium monohydrate contains
Amount is 98.6%.
Embodiment seven
Content is greater than 95% epsom salt dry air air-flow by a kind of microwave dehydration method of the inorganic salts containing the crystallization water
Be suspended in watering area, watering area arrange 20 sets output powers for the microwave generator of 1000W, microwave frequency 2.45GHz,
Microwave and epsom salt crystal are acted on and are dehydrated, by the temperature of sensor follow-on test watering area, when temperature reaches 140
DEG C when, microwave dehydration handle 10min, then by hopper feeding cooling area pack, sampling analysis barium monohydrate contains
Amount is 98.8%.
Embodiment eight
Content is greater than 95% sal glauberi dry air air-flow by a kind of microwave dehydration method of the inorganic salts containing the crystallization water
Be suspended in watering area, watering area arrange 20 sets output powers for the microwave generator of 1000W, microwave frequency 2.45GHz,
Microwave and sal glauberi crystal are acted on and are dehydrated, by the temperature of sensor follow-on test watering area, when temperature reaches 120
DEG C when, microwave dehydration handle 20min, then by hopper feeding cooling area pack, sampling analysis barium monohydrate contains
Amount is 99.2%.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all wrap within the scope of the present invention within mind and principle.
Claims (2)
1. a kind of microwave dehydration method of the inorganic salts containing the crystallization water, which is characterized in that send the inorganic salt crystal containing the crystallization water
To with microwave generator fluidized bed in, using dry air air-flow by the inorganic salts crystal suspension containing the crystallization water in fluidized bed
Watering area, using microwave generator generate microwave with containing the crystallization water inorganic salts crystal interact and be dehydrated, microwave
The microwave frequency that generator generates is 2.45GHz, and control fluidized bed region temperature control is at 50 DEG C -180 DEG C, the nothing containing the crystallization water
Dewatering time of the machine salt crystal on fluidized bed is 3min-20min.
2. a kind of microwave dehydration method of inorganic salts containing the crystallization water according to claim 1, which is characterized in that described to contain
The inorganic salt crystal of the crystallization water is four water-calcium nitrate, or is magnesium nitrate hexahydrate, or is epsom salt, or is eight water hydroxides
Barium, or be sal glauberi.
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| CN201810992508.2A CN109095491A (en) | 2018-08-29 | 2018-08-29 | A kind of microwave dehydration method of the inorganic salts containing the crystallization water |
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| CN201810992508.2A CN109095491A (en) | 2018-08-29 | 2018-08-29 | A kind of microwave dehydration method of the inorganic salts containing the crystallization water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888269A (en) * | 2018-12-29 | 2019-06-14 | 广东邦普循环科技有限公司 | A kind of pretreated method of ternary material mixing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1613770A (en) * | 2004-07-24 | 2005-05-11 | 陈瑜 | Process for producing anhydrous magnesium chloride by microwave energy |
| CN101550585A (en) * | 2009-04-16 | 2009-10-07 | 北京矿冶研究总院 | Preparation method of dehydrated calcium sulfate whisker |
| CN103172120A (en) * | 2013-02-04 | 2013-06-26 | 湖南桑顿新能源有限公司 | Preparation method of silicon-coated lithium ion battery anode material |
| CN206167979U (en) * | 2016-10-31 | 2017-05-17 | 交城县金兰化工有限公司 | Empty cold crystallization ware of calcium nitrate |
-
2018
- 2018-08-29 CN CN201810992508.2A patent/CN109095491A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1613770A (en) * | 2004-07-24 | 2005-05-11 | 陈瑜 | Process for producing anhydrous magnesium chloride by microwave energy |
| CN101550585A (en) * | 2009-04-16 | 2009-10-07 | 北京矿冶研究总院 | Preparation method of dehydrated calcium sulfate whisker |
| CN103172120A (en) * | 2013-02-04 | 2013-06-26 | 湖南桑顿新能源有限公司 | Preparation method of silicon-coated lithium ion battery anode material |
| CN206167979U (en) * | 2016-10-31 | 2017-05-17 | 交城县金兰化工有限公司 | Empty cold crystallization ware of calcium nitrate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888269A (en) * | 2018-12-29 | 2019-06-14 | 广东邦普循环科技有限公司 | A kind of pretreated method of ternary material mixing |
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Application publication date: 20181228 |
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