CN208091990U - A kind of device of liquid detecting analysis dithionate - Google Patents

Abstract

The utility model belongs to chemical industry measurement technical field, is related to a kind of device of liquid detecting analysis dithionate.The device, including nitrogen cylinder, gas flowmeter, three neck round bottom flask, condenser pipe, triangular flask group and Quick testing instrument, triangular flask group includes passing sequentially through the first triangular flask of connecting tube connection, second triangular flask and third triangular flask, nitrogen cylinder is connected to by connecting tube with the air inlet of gas flowmeter, the gas outlet of gas flowmeter is connected to by connecting tube with wherein 1 side bottleneck of three neck round bottom flask, the top bottleneck of three neck round bottom flask is provided with condenser pipe, the top exit of condenser pipe is connected to by connecting tube with the first triangular flask, the bottle mouth position of third triangular flask is provided with escape pipe, magnetic agitation heated base is provided on Quick testing instrument, three neck round bottom flask is positioned on magnetic agitation heated base.Using the present apparatus, the accurate content for detecting dithionic acid salt ion and sulfite ion, detection is quick, automates, is efficient.

Description

A kind of device of liquid detecting analysis dithionate

Technical field

The utility model belongs to chemical industry measurement technical field, is related to a kind of device of liquid detecting analysis dithionate.

Background technology

With the rapid development of modern industry, SO₂Gas pollution on the environment is also on the rise.To solve SO₂Exhaust gas Pollution to environment, scientific worker both domestic and external have worked out nearly hundred kinds of improvement SO₂The method of exhaust gas, but profitable industry Method is few.Low dense SO is absorbed with pyrolusite pulp₂MnSO processed₄·H₂O is a kind of comparatively ideal improvement SO₂Method；However by In MnO₂And SO₂Reaction is except generation MnSO₄Outside, also by-product MnSO₄And MnS₂O₆, and it is difficult separation that it, which is existed simultaneously, is caused MnSO₄Solution can not be electrolysed or be electrolysed under low output in electrolytic process, and product quality is extremely difficult to International Industry primary standard, Also it is to administer manganous dithionate to increase difficulty.Dithionic acid is a kind of inorganic compound, is a kind of very unstable strong acid, only deposits It is in weak solution, heats or be all soon decomposed into concentrated solution sulfuric acid and sulfur dioxide；And its salt is more stable than acid More, the dithionate of all metals is all dissolved in water, and acid salt is not present.Currently, the detection for dithionic acid salt ion is deposited In many limitations, the detection efficiency as existing for artificial detection is low, measurement error is big, personnel cost is high, labor intensity is big, Yi Jichuan Reagent consumption is larger etc. in unified test examination, therefore, content that is accurate, timely detecting dithionate metal ion in electrolyte With regard to particularly critical.

Utility model content

The purpose of this utility model is to provide the devices that a kind of liquid detecting analyzes dithionate, reduce artificial detection Error, pass through automatic detection improve detection accuracy and efficiency.

The utility model solve above-mentioned technical problem technical solution be：

A kind of device of liquid detecting analysis dithionate, including nitrogen cylinder, gas flowmeter, three neck round bottom flask, Condenser pipe, triangular flask group and Quick testing instrument；Three neck round bottom flask includes 2 side bottlenecks and 1 top bottleneck, triangular flask group The first triangular flask, the second triangular flask and third triangular flask including passing sequentially through connecting tube connection；Nitrogen cylinder by connecting tube with The air inlet of gas flowmeter is connected to, wherein 1 side that the gas outlet of gas flowmeter passes through connecting tube and three neck round bottom flask The connection of portion bottleneck, the top bottleneck of three neck round bottom flask are provided with condenser pipe, and the top exit of condenser pipe passes through connecting tube and the One triangular flask is connected to, and the bottle mouth position of third triangular flask is provided with escape pipe；Magnetic agitation heating bottom is provided on Quick testing instrument Seat, three neck round bottom flask are positioned on magnetic agitation heated base.In addition, it is provided with display screen on the shell of Quick testing instrument, For showing time and voltage；It is additionally provided with adjusting knob, for adjusting voltage and rotating speed.

Now by taking the principles of chemistry for measuring manganous dithionate as an example, illustrate that the utility model measures the mechanism of dithionate.

(1)MnS₂O₆

MnO₂+2SO₂→MnS₂O₆

There is two kinds of desulfurization methods in sweetening process, with MnO₂And SO₂Direct oxidation reduction reaction based on；

(2)MnCO₃

SO₂+H₂O→H₂SO₃

H₂SO₄+MnCO₃→MnSO₄+CO₂↑+H₂O

In sweetening process, SO₂Initial oxidation is sulfuric acid, then again with MnCO₃Reaction, therefore, the leaching of manganese under anaerobic Extracting rate is relatively low；

(3)Mn₂O₃

SO₂+H₂O→H₂SO₃

H₂SO₄+Mn₂O₃→MnSO₄+MnO₂+H₂O

Mn₂O₃+2SO₂→MnSO₄+MnSO₃

MnO₂+SO₂→MnSO₄

Sweetening process is with Mn₂O₃Same SO₂Reaction generates MnSO₄And MnSO₃Based on, while with Mn²⁺Catalysis oxidation SO₂It generates Sulfuric acid, the sulfuric acid for reacting generation continues and Mn₂O₃Reaction generates MnSO₄And MnO₂, MnO₂Again with SO₂Reaction, thus, aerobic Under conditions of, reaction improves 1 times.

Having the beneficial effect that for dithionate device is analyzed using the utility model liquid detecting, is replaced by inert nitrogen Sulfur dioxide and method using liquid detecting analysis, accurately detect dithionic acid salt ion in water solution system and The content of sulfite ion；Using the fast detector for being provided with magnetic force heating stirring so that detection it is more quick, accurately and Automation；Artificial detection existing error and cost problem in the process are reduced, detection efficiency is improved, is the complete of subsequent technique index At laying the foundation, the maximization of enterprise profit is realized.

Description of the drawings

Fig. 1 is the structural schematic diagram that the utility model liquid detecting analyzes dithionate device.

Coding in attached drawing is respectively：Nitrogen cylinder 1, gas flowmeter 2, three neck round bottom flask 3, condenser pipe 4, triangular flask group 5, the first triangular flask 5-1, the second triangular flask 5-2, third triangular flask 5-3, Quick testing instrument 6, magnetic agitation heated base 6-1.

Specific implementation mode

As shown in Figure 1, a kind of device of liquid detecting analysis dithionate, including nitrogen cylinder 1, gas flowmeter 2, three Mouth round-bottomed flask 3, condenser pipe 4, triangular flask group 5 and Quick testing instrument 6；Three neck round bottom flask 3 includes 2 side bottlenecks and 1 Top bottleneck, triangular flask group 5 include passing sequentially through the first triangular flask 5-1, the second triangular flask 5-2 and the three or three of connecting tube connection Angle bottle 5-3；Nitrogen cylinder 1 is connected to by connecting tube with the air inlet of gas flowmeter 2, and the gas outlet of gas flowmeter 2 passes through company It takes over and is connected to wherein 1 side bottleneck of three neck round bottom flask 3, the top bottleneck of three neck round bottom flask 3 is provided with condenser pipe 4, the top exit of condenser pipe 4 is connected to by connecting tube with the first triangular flask 5-1, and the bottle mouth position of third triangular flask 5-3 is provided with Escape pipe；Magnetic agitation heated base 6-1 is provided on Quick testing instrument 6, three neck round bottom flask 3 is positioned over magnetic agitation heating On pedestal 6-1；It is additionally provided with display screen on the shell of Quick testing instrument 6, for showing time and voltage, is additionally provided with adjusting Button, for adjusting voltage and rotating speed.

The utility model detection and analysis dithionate device the course of work be：

1. taking at least five kinds of different solution examples containing dithionate, model and calibration standard are established for obtaining The sample of data；

2. accurately weighing 10ml solution examples and being added in three neck round bottom flask 3,10ml 1+1H are added₂SO₄After place In on the magnetic agitation heated base 6-1 of Quick testing instrument 6, and carry out agitating and heating；

3. be separately added into the first triangular flask 5-1, the second triangular flask 5-2, third triangular flask 5-3 volume be 15ml, 5ml, 5ml, molal weight are the iodine standard solution of 0.1mol, then in the first triangular flask 5-1, the second triangular flask 5-2, the three or three 200ml distilled water, 2 drop glacial acetic acid, the starch solution that 3ml mass concentrations are 0.5%, 3 triangular flasks point are added in the bottle 5-3 of angle Third-order reaction kettle is not formed by being tightly connected concatenated mode；

4. install nitrogen cylinder 1 additional, the nitrogen in bottle is pressed into gas flowmeter 2 by connecting tube, control tolerance 0.2L/h extremely It between 1L/h, then is passed through in flask by 1 side bottleneck of three neck round bottom flask 3, starts to distill in low temperature, boil 5 points Clock stops distillation, completes displacement reaction；

5. the sulfur dioxide gas displaced in three neck round bottom flask 3 is passed through triangular flask group 5, since triangular flask group is to pass through The third-order reaction kettle that concatenated mode is formed, i.e. sulfur dioxide gas pass sequentially through the first triangular flask 5-1, the second triangular flask 5-2 With third triangular flask 5-3 sulfur dioxide gas is gradually reacted；

6. removing the first triangular flask 5-1, the second triangular flask 5-2, third triangular flask 5-3 after distillation, plug is covered, is used It is terminal that the sodium thiosulfate standard solution of 0.1mol/L, which is titrated to blue and disappears, and makees blank test simultaneously.

Claims (3)

1. a kind of device of liquid detecting analysis dithionate, which is characterized in that including nitrogen cylinder (1), gas flowmeter (2), three neck round bottom flask (3), condenser pipe (4), triangular flask group (5) and Quick testing instrument (6)；

The three neck round bottom flask (3) includes 2 side bottlenecks and 1 top bottleneck, and the triangular flask group (5) includes leading to successively Cross the first triangular flask (5-1), the second triangular flask (5-2) and the third triangular flask (5-3) of connecting tube connection；

The nitrogen cylinder (1) is connected to by connecting tube with the air inlet of gas flowmeter (2), and gas flowmeter (2) go out Gas port is connected to by connecting tube with wherein 1 side bottleneck of three neck round bottom flask (3), the top of the three neck round bottom flask (3) Portion's bottleneck is provided with condenser pipe (4), and the top exit of the condenser pipe (4) is connected to by connecting tube with the first triangular flask (5-1), The bottle mouth position of the third triangular flask (5-3) is provided with escape pipe；

Magnetic agitation heated base (6-1) is provided on the Quick testing instrument (6), the three neck round bottom flask (3) is positioned over On magnetic agitation heated base (6-1).

2. a kind of device of liquid detecting analysis dithionate as described in claim 1, which is characterized in that the quick survey Determine to be provided with display screen on the shell of instrument (6).

3. a kind of device of liquid detecting analysis dithionate as described in claim 1, which is characterized in that the quick survey Determine to be provided with adjusting knob on the shell of instrument (6).