CN205035089U - Ice crystal production vent gas treatment system in - Google Patents
Ice crystal production vent gas treatment system in Download PDFInfo
- Publication number
- CN205035089U CN205035089U CN201520689288.8U CN201520689288U CN205035089U CN 205035089 U CN205035089 U CN 205035089U CN 201520689288 U CN201520689288 U CN 201520689288U CN 205035089 U CN205035089 U CN 205035089U
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- treatment system
- aluminum fluoride
- sodium aluminum
- water pump
- 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.)
- Expired - Fee Related
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Abstract
The utility model aims at providing an ammonia that ice crystal production vent gas treatment system in, this system fully absorb in the tail gas carries out recycling, reduces material cost, reduces the atmosphere pollution. An ice crystal production vent gas treatment system in, includes horizontal absorption tower, and the top is equipped with the basin, and the basin links to each other with the shower nozzle, and the shower nozzle has a plurality ofly and the upper portion of evenly distributed at the absorption tower inner chamber, absorption tower bottom sets up the liquid outlet, and the liquid outlet links to each other with aqueous ammonia buffer memory groove, and aqueous ammonia buffer memory groove links to each other with the water pump, and water pump and fluorine ammonolyze the device and link to each other, and the fluorine ammonolyzes the device ejection of compact and inserts filter equipment, and the mother liquor after filter equipment filters inserts the ice crystal synthesizer, and the tail gas discharge pipe of ice crystal synthesizer inserts the absorption tower, water pump and fluorine ammonolyze and are equipped with the backward flow branch road on the connecting tube between the device, and the backward flow branch road is connected to tail gas discharge pipe.
Description
Technical field
The utility model relates to a kind of exhaust treatment system, is specially a kind of sodium aluminum fluoride and produces exhaust treatment system.
Background technology
Sodium aluminum fluoride (Na
3alF
6) be the double salt of Sodium Fluoride and aluminum fluoride, also known as hexafluoro sodium aluminate.Sodium aluminum fluoride is in aluminium metallurgy is produced, it is the indispensable solubility promoter of electrolysis of aluminum, because sodium aluminum fluoride is except can also have some indispensable character except dissolved oxygen aluminium, if do not contained element more electropositive than aluminium, good stability, does not under general condition decompose, non-volatile, not deliquescence, and fusing point is higher than aluminium, good conductivity, save power etc.And sodium aluminum fluoride can also be used as the wear-resistant filler of rubber, emery wheel, enamel opacifier, and glass opalizer and metal flux, the agrochemical of farm crop, is widely used.
The main production of sodium aluminum fluoride has hydrogen fluoride, Sodium Silicofluoride method, hydrofluoaluminic acid Method of Soda and ammonia-sodium aluminate method etc.Wherein ammonia-sodium aluminate method take Sodium Silicofluoride as fluorine source, in fluorine ammonia solution device with excessive weak ammonia ammonia solution after, more after filtration device filter, filter after mother liquid obtained reaction with sodium aluminate generate sodium aluminum fluoride.The method makes full use of fluorine resource, and obtained sodium aluminum fluoride molecular ratio high-moisture is few, good product quality.But heat release during the method synthetic cryolite, temperature is too high to be made containing the ammonia of overflowing from ammoniacal liquor in a large number in tail gas, and cause severe operational environment, topsoil is serious.
Summary of the invention
The purpose of this utility model is to provide a kind of sodium aluminum fluoride and produces exhaust treatment system, and this system ammonia fully absorbed in tail gas carries out recovery and uses, and reduces raw materials cost, reduces topsoil.
For achieving the above object, the technical scheme that the utility model adopts is: a kind of sodium aluminum fluoride produces exhaust treatment system, and comprise absorption tower, absorption tower is horizontal, and one end arranges inlet mouth, and the other end sets out gas port; Be provided with tank above absorption tower, tank is connected by pipeline with shower nozzle, pipeline is arranged spray control valve; Described shower nozzle has multiple and is evenly distributed on the top of absorption tower inner chamber; Arrange liquid outlet bottom absorption tower, liquid outlet is connected by pipeline with ammoniacal liquor buffer memory groove, and this connecting tube sets out hydraulic control valve; Described ammoniacal liquor buffer memory groove is connected with water pump, and water pump is connected with fluorine ammonia solution device, fluorine ammonia solution device discharging access filtration unit, the mother liquor access sodium aluminum fluoride synthesizer after filtration devices, the tail gas discharging pipe access absorption tower of sodium aluminum fluoride synthesizer; Connecting tube between described water pump and fluorine ammonia solution device is provided with backflow branch road, and backflow branch road is connected to tail gas discharging pipe; Described backflow branch road arranges recycle control valve.
Further, described absorption tower outer wall arranges thermal insulation layer, and this thermal insulation layer is followed successively by from inside to outside: anticorrosion bottom, aluminum silicate fiber layer, perlite heat-insulating mortar layer, glass wool layer, architectural surface.
Further, liquidometer is installed in bottom, described absorption tower.
Further, top, described absorption tower is provided with and looks around mouth.
The beneficial effects of the utility model are: the tail gas that sodium aluminum fluoride is produced enters absorption tower through tail gas discharging pipe, before entering absorption tower with the weak ammonia reclaimed at pipe-line blending, effectively utilize the weak ammonia of backflow to absorb in advance.Tail gas enters in absorption tower, is cached with the weak ammonia of certain liquid level bottom absorption tower, and bottom horizontal absorption tower, liquid level surface-area is larger, increases gas liquid interfacial area; Multiple shower nozzle is established on inner chamber top, absorption tower, and be full of spray water in tower, tail gas fully contacts with it; And a large amount of sprays of water effectively reduce temperature in absorption tower, improve ammonia gas dissolves degree, all can improve the rate of recovery of ammonia in tail gas.Need to use a large amount of weak ammonia because ammonia-sodium aluminate method produces sodium aluminum fluoride, so discharging control valve can be regulated to increase weak ammonia aquifer yield, provide enough weak ammonias to fluorine ammonia solution device.Regulate spray control valve to supplement spray-water in time, supplement in time, also ensure ammoniacal liquor lower concentration state in tower simultaneously, increase ammonia gas dissolves speed, improve Ammonia recovery rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Embodiment
As shown in Figure 1, a kind of sodium aluminum fluoride produces exhaust treatment system, and comprise absorption tower 1, absorption tower 1 is horizontal, and one end arranges inlet mouth 10, and the other end sets out gas port 4, is cached with the weak ammonia of certain liquid level in absorption process bottom absorption tower 1.Be provided with tank 12 above absorption tower 1, tank 12 is connected by pipeline with shower nozzle 2, pipeline is arranged spray control valve 13; Described shower nozzle 2 has multiple and is evenly distributed on the top of absorption tower 1 inner chamber, and a large amount of spray water is full of absorption tower 1 inner chamber, and effectively reduces temperature, strengthens tail gas absorption effect.Arrange liquid outlet 7 bottom absorption tower 1, liquid outlet 7 is connected by pipeline with ammoniacal liquor buffer memory groove 8, this connecting tube sets out hydraulic control valve 6; Described ammoniacal liquor buffer memory groove 8 is connected with water pump 9, water pump 9 is connected with fluorine ammonia solution device 20, fluorine ammonia solution device 20 discharging access filtration unit 30, the mother liquor access sodium aluminum fluoride synthesizer 40 after filtration unit 30 filters, the tail gas discharging pipe access absorption tower 1 of sodium aluminum fluoride synthesizer 40.Weak ammonia liquid outlet quantity is increased by regulating spray control valve 13 to increase water spray and go out hydraulic control valve 6, there is provided enough weak ammonia to fluorine ammonia solution device 20, and make ammoniacal liquor in absorption tower can maintain a lower concentration, strengthen the assimilation effect of ammonia in tail gas.
Connecting tube between described water pump 9 and fluorine ammonia solution device 20 is provided with backflow branch road, and backflow branch road is connected to tail gas discharging pipe; Described backflow branch road arranges recycle control valve 11.Tail gas before entering absorption tower with the weak ammonia reclaimed at pipe-line blending, effectively utilize the weak ammonia of backflow to absorb in advance, improve ammonia specific absorption.Described absorption tower 1 outer wall arranges thermal insulation layer, as this thermal insulation layer of Fig. 2 is followed successively by from inside to outside: anticorrosion bottom 14, aluminum silicate fiber layer 15, perlite heat-insulating mortar layer 16, glass wool layer 17, architectural surface 18.When outside temperature rises, thermal insulation layer effectively can cut off extraneous thermal effect, reduces the ammoniacal liquor volatilization because high temperature causes, has the functions such as fire prevention, protection against the tide in addition.Liquidometer 5 is installed in bottom, absorption tower 1.Level condition in real-time grasp absorption tower, regulates liquid level in water inlet control valve 13 and discharging control valve 6 control tower in time.Top, absorption tower 1 is provided with looks around mouth 3.Clean-up performance in Absorption and tower in fast and easy observing tower.
Claims (4)
1. sodium aluminum fluoride produces an exhaust treatment system, and it is characterized in that: comprise absorption tower (1), absorption tower (1), for horizontal, one end arranges inlet mouth (10), and the other end sets out gas port (4);
Top, absorption tower (1) is provided with tank (12), and tank (12) is connected by pipeline with shower nozzle (2), pipeline is arranged spray control valve (13); Described shower nozzle (2) has multiple and is evenly distributed on the top of absorption tower (1) inner chamber;
Bottom, absorption tower (1) arranges liquid outlet (7), and liquid outlet (7) is connected by pipeline with ammoniacal liquor buffer memory groove (8), this connecting tube sets out hydraulic control valve (6);
Described ammoniacal liquor buffer memory groove (8) is connected with water pump (9), water pump (9) is connected with fluorine ammonia solution device (20), fluorine ammonia solution device (20) discharging access filtration unit (30), mother liquor access sodium aluminum fluoride synthesizer (40) after filtration unit (30) filters, tail gas discharging pipe access absorption tower (1) of sodium aluminum fluoride synthesizer (40);
Connecting tube between described water pump (9) and fluorine ammonia solution device (20) is provided with backflow branch road, and backflow branch road is connected to tail gas discharging pipe; Described backflow branch road is arranged recycle control valve (11).
2. sodium aluminum fluoride according to claim 1 produces exhaust treatment system, it is characterized in that: described absorption tower (1) outer wall arranges thermal insulation layer, and this thermal insulation layer is followed successively by from inside to outside: anticorrosion bottom (14), aluminum silicate fiber layer (15), perlite heat-insulating mortar layer (16), glass wool layer (17), architectural surface (18).
3. sodium aluminum fluoride according to claim 1 produces exhaust treatment system, it is characterized in that: liquidometer (5) is installed in described absorption tower (1) bottom.
4. sodium aluminum fluoride according to claim 1 produces exhaust treatment system, it is characterized in that: described absorption tower (1) top is provided with looks around mouth (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520689288.8U CN205035089U (en) | 2015-09-08 | 2015-09-08 | Ice crystal production vent gas treatment system in |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520689288.8U CN205035089U (en) | 2015-09-08 | 2015-09-08 | Ice crystal production vent gas treatment system in |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205035089U true CN205035089U (en) | 2016-02-17 |
Family
ID=55294004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520689288.8U Expired - Fee Related CN205035089U (en) | 2015-09-08 | 2015-09-08 | Ice crystal production vent gas treatment system in |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205035089U (en) |
-
2015
- 2015-09-08 CN CN201520689288.8U patent/CN205035089U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160217 Termination date: 20190908 |