CN210528493U - System for utilize fluorine-containing tail gas treatment residue production cryolite of chemical fertilizer plant - Google Patents
System for utilize fluorine-containing tail gas treatment residue production cryolite of chemical fertilizer plant Download PDFInfo
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- CN210528493U CN210528493U CN201921216594.4U CN201921216594U CN210528493U CN 210528493 U CN210528493 U CN 210528493U CN 201921216594 U CN201921216594 U CN 201921216594U CN 210528493 U CN210528493 U CN 210528493U
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- ammonia
- tail gas
- gas treatment
- containing tail
- fluorine
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Abstract
The utility model discloses a system for producing cryolite by utilizing fluorine-containing tail gas treatment residues of a fertilizer plant, which comprises a jacket reactor, wherein the top of the jacket reactor is provided with a caustic soda inlet, a feed inlet and an ammonia outlet which are not interfered with each other, the caustic soda inlet is communicated with an alkali dissolving tank, the feed inlet is communicated with a metering tank, and the ammonia outlet is communicated with an ammonia recoverer; jacket reactor bottom sets up the bin outlet, and the bin outlet passes through discharge pipeline and centrifuge intercommunication, and centrifuge's leakage fluid dram communicates to the ammonia water pond, and centrifuge's solid phase bin outlet is connected to conveying mechanism, and conveying mechanism carries to packing center after drying the room of drying, caustic soda import, charge door, ammonia export and bin outlet all are provided with the valve. The utility model discloses can recycle the ammonium fluoride that produces after the fluorine-containing tail gas absorbs.
Description
Technical Field
The utility model relates to a chemical fertilizer processing field especially relates to a system for utilize fluorine-containing tail gas treatment residue of chemical fertilizer plant to produce cryolite.
Background
During the process of preparing phosphate fertilizer by acid method, a great deal of fluorine is generated to overflow, mainly hydrofluoric acid and silicon fluoride gas, and the direct discharge can cause great pollution and loss. Generally, water is adopted for absorption, a large amount of fluorine-containing silica gel is generated, the treatment and the utilization of the fluorine-containing silica gel are difficult, and the fluorine-containing silica gel has strong adsorption capacity and is easy to adhere to a container and extremely difficult to treat. At present, ammonia is generally used for absorbing tail gas to generate ammonium fluoride and silicon dioxide, wherein the ammonium fluoride is a good industrial raw material and can be used for producing cryolite, and the cryolite has high economic value. Therefore, a system for producing cryolite by utilizing tail gas containing fluorine to treat residues is needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a system for utilize fluoride tail gas treatment residue production cryolite of chemical fertilizer factory can recycle the ammonium fluoride that produces after fluoride tail gas absorbs.
The utility model discloses a realize through following technical scheme:
a system for producing cryolite by utilizing fluorine-containing tail gas treatment residues of a fertilizer plant comprises a jacket reactor, wherein the top of the jacket reactor is provided with a caustic soda inlet, a feed inlet and an ammonia outlet which are mutually non-interfering, the caustic soda inlet is communicated with an alkali dissolving tank, the feed inlet is communicated with a metering tank, and the ammonia outlet is communicated with an ammonia recoverer; jacket reactor bottom sets up the bin outlet, and the bin outlet passes through discharge pipeline and centrifuge intercommunication, and centrifuge's leakage fluid dram communicates to the ammonia water pond, and centrifuge's solid phase bin outlet is connected to conveying mechanism, and conveying mechanism carries to packing center after drying the room of drying, caustic soda import, charge door, ammonia export and bin outlet all are provided with the valve.
Preferably, the jacketed reactor is electrically heated.
Preferably, one side of the feed inlet is provided with an aluminum hydroxide feed inlet, and a sealing cover plate is arranged on the feed inlet.
Preferably, the conveying mechanism is a conveying belt or a transfer trolley.
Preferably, one side of the ammonia water tank is provided with a water pump, and the other end of the water pump is connected to the alkali dissolving tank.
Preferably, absorption liquid is arranged in the ammonia recoverer, the ammonia recoverer is communicated to an ammonia tank, and the ammonia tank is connected to an ammonia water pool.
Preferably, the drying temperature of the drying room is 250 ℃.
The utility model discloses has following benefit:
1. the waste gas containing fluorine is changed into valuable, so that the environmental pollution is reduced, and the economic benefit is improved;
2. the structure and the operation flow are relatively simple, and the produced auxiliary finished products can be recycled, so that zero emission can be almost achieved.
Drawings
FIG. 1 is a schematic structural diagram of a system for producing cryolite by using fluorine-containing tail gas treatment residues in a fertilizer plant according to an embodiment of the present invention.
The reference numbers are as follows:
1. the device comprises a jacket reactor, 2, a centrifuge, 3, a conveying mechanism, 4, a drying room, 5, a packing center, 6, an ammonia water tank, 7, a water pump, 8, a metering tank, 9, an alkali dissolving tank, 10, an ammonia recoverer, 11 and an ammonia water tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a system for producing cryolite by using fluorine-containing tail gas treatment residues of a fertilizer plant comprises a jacket reactor 1, wherein the top of the jacket reactor 1 is provided with a caustic soda inlet, a feed inlet and an ammonia outlet which are not interfered with each other, the caustic soda inlet is communicated with an alkali dissolving tank 9, the feed inlet is communicated with a metering tank 8, and the ammonia outlet is communicated with an ammonia recoverer 10; jacket reactor 1 bottom sets up the bin outlet, and the bin outlet passes through discharge conduit and centrifuge 2 intercommunication, and centrifuge 2's leakage fluid dram communicates to ammonia water pond 6, and centrifuge 2's solid phase bin outlet is connected to conveying mechanism 3, and conveying mechanism 3 carries to packing center 5 after 4 stoving in stoving room, caustic soda import, charge door, ammonia export and bin outlet all are provided with the valve.
In this example, the jacketed reactor 1 was electrically heated.
In this embodiment, an aluminum hydroxide feed inlet is provided with on one side of the feed inlet, and the feed inlet is provided with sealed apron.
In this embodiment, the conveying mechanism 3 is a transfer trolley.
In this embodiment, a water pump 7 is arranged on one side of the ammonia water tank 6, and the other end of the water pump 7 is connected to an alkali dissolving tank 9.
In this embodiment, the ammonia recovering device 10 is provided with an absorption liquid therein, the ammonia recovering device 10 is communicated to an ammonia tank 11, and the ammonia tank 11 is connected to the ammonia water tank 6.
When in use, firstly, ammonium fluoride generated after water absorption is filtered, purified and dried (the prior art can be seen), caustic soda and aluminum hydroxide are added into the jacket reactor 1 to react to generate sodium aluminate, then the dried ammonium fluoride is added according to the measurement, the heating is carried out, and overflowed ammonia gas is condensed and recovered by an ammonia recoverer 10; the mixture generated by the reaction is filtered by a centrifuge 2, and the generated crystal is cryolite which is conveyed to a drying room 4 for drying and then is packed. The filtered ammonia and recovered ammonia can be used to dissolve caustic soda.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A system for producing cryolite by utilizing fluorine-containing tail gas treatment residues of a fertilizer plant is characterized by comprising a jacket reactor, wherein the top of the jacket reactor is provided with a caustic soda inlet, a feed inlet and an ammonia outlet which are not interfered with each other, the caustic soda inlet is communicated with an alkali dissolving tank, the feed inlet is communicated with a metering tank, and the ammonia outlet is communicated with an ammonia recoverer; jacket reactor bottom sets up the bin outlet, and the bin outlet passes through discharge pipeline and centrifuge intercommunication, and centrifuge's leakage fluid dram communicates to the ammonia water pond, and centrifuge's solid phase bin outlet is connected to conveying mechanism, and conveying mechanism carries to packing center after drying the room of drying, caustic soda import, charge door, ammonia export and bin outlet all are provided with the valve.
2. The system for producing cryolite with fluorine-containing tail gas treatment residues of fertilizer plants as claimed in claim 1, wherein said jacketed reactor is electrically heated.
3. The system for producing cryolite by utilizing fluorine-containing tail gas treatment residues of a fertilizer plant as claimed in claim 2, wherein an aluminum hydroxide feed opening is arranged on one side of the feed opening, and a sealing cover plate is arranged on the feed opening.
4. The system for producing cryolite with fluorine-containing tail gas treatment residues of fertilizer plants as claimed in claim 2, wherein the conveying mechanism is a conveyor belt or a transfer trolley.
5. The system for producing cryolite by utilizing fluorine-containing tail gas treatment residues of a fertilizer plant as claimed in claim 1, wherein a water pump is arranged on one side of the ammonia water tank, and the other end of the water pump is connected to the alkali dissolving tank.
6. The system for producing cryolite by utilizing fluorine-containing tail gas treatment residues of a fertilizer plant as claimed in claim 1, wherein an absorption liquid is arranged in the ammonia recoverer, the ammonia recoverer is communicated to an ammonia tank, and the ammonia tank is connected to an ammonia water pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921216594.4U CN210528493U (en) | 2019-07-30 | 2019-07-30 | System for utilize fluorine-containing tail gas treatment residue production cryolite of chemical fertilizer plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921216594.4U CN210528493U (en) | 2019-07-30 | 2019-07-30 | System for utilize fluorine-containing tail gas treatment residue production cryolite of chemical fertilizer plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210528493U true CN210528493U (en) | 2020-05-15 |
Family
ID=70599847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921216594.4U Expired - Fee Related CN210528493U (en) | 2019-07-30 | 2019-07-30 | System for utilize fluorine-containing tail gas treatment residue production cryolite of chemical fertilizer plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210528493U (en) |
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2019
- 2019-07-30 CN CN201921216594.4U patent/CN210528493U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200515 Termination date: 20210730 |