CN217442971U - Rotary absorption device for detecting harmful elements in coal gas - Google Patents
Rotary absorption device for detecting harmful elements in coal gas Download PDFInfo
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- CN217442971U CN217442971U CN202221019304.9U CN202221019304U CN217442971U CN 217442971 U CN217442971 U CN 217442971U CN 202221019304 U CN202221019304 U CN 202221019304U CN 217442971 U CN217442971 U CN 217442971U
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- coal gas
- rotating shaft
- tank body
- absorber
- hollow rotating
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 41
- 239000003034 coal gas Substances 0.000 title claims abstract description 39
- 238000003756 stirring Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000006096 absorbing agent Substances 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 42
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to a rotary absorption device for detecting harmful elements in coal gas, which comprises a coal gas inlet, an air extracting pump, an absorber, a flow meter and a coal gas outlet, wherein the coal gas inlet is connected with the air extracting pump, the absorber and the flow meter are sequentially connected, and the flow meter is connected with the coal gas outlet; the absorber comprises a tank body, an air inlet, an absorption liquid feeding port, a stirring motor, a hollow rotating shaft, a stirring paddle, an air outlet and a liquid outlet, wherein the tank body is provided with the absorption liquid feeding port, the top of the tank body is provided with the air outlet, and the bottom of the tank body is provided with the air inlet and the liquid outlet; the stirring motor drives the hollow rotating shaft to rotate, one end of the hollow rotating shaft is connected with the air inlet in a rotating mode, the other end of the hollow rotating shaft extends into the tank body to be connected with the stirring paddle, the stirring paddle is of a cavity structure, and the stirring paddle is provided with an air outlet hole. The advantages are that: reasonable structure, low cost and simple operation; the absorber structure adopts double reaction tanks connected in series, thereby ensuring that harmful elements in the coal gas are absorbed more thoroughly.
Description
Technical Field
The utility model belongs to coal gas composition detection area especially relates to a rotatory absorbing device that is arranged in harmful element to detect in coal gas.
Background
At present, with increasingly strict environmental requirements, domestic waste gas discharged by steel is sequentially listed in an environmental protection online monitoring range, and the concentration of dust, sulfur dioxide, nitrogen oxide and the like in the discharged flue gas must meet the requirement of ultralow emission. Therefore, in order to control the final emission index, some processes in the iron and steel enterprises, such as pellets, power plants, etc., need to strictly control the harmful elements in the raw gas. Secondly, in recent years, a plurality of blockages appear on a gas filter screen in a gas pipeline of a heating furnace of some iron and steel enterprises, and the blockages appearing on the gas filter screen in the gas pipeline belong to corrosion products and contain a large amount of sulfur elements through investigation. It can be seen that the sulfur content in the gas is too high, which causes serious harm to the production. Thirdly, in recent years, some steel enterprises gradually change the dust removal process of blast furnace gas from wet dust removal to dry dust removal, so that the chlorine content in the blast furnace gas is obviously increased, the problems of corrosion and blockage of gas pipelines and subsequent users are frequent, the normal smelting of the blast furnace is seriously influenced, and potential safety production hazards are brought.
Based on the problems to be solved in the production, the research on the content of some harmful elements in the coal gas is of great significance. Some harmful elements exist in coal gas, but the content is extremely low, the trace elements are difficult to accurately detect by a conventional method, when the existing advanced methods such as an infrared spectroscopy method and the like are adopted for analysis and test, because the content is extremely low, the trace elements are easily interfered by other gases, the test and analysis results are inaccurate, and in practice, the results of measuring the same coal gas by different gas analyzers even have a difference of more than 100 percent and obviously exceed the scope of coal gas component fluctuation. On the other hand, some harmful elements are hidden in the gas in the form of extremely small particles, and the conventional spectroscopic gas analyzer cannot identify the harmful elements and can also cause inaccurate analysis results, which are some of the disadvantages of the spectroscopic gas analyzer. Relatively speaking, the method of absorbing harmful elements in the gas by using the pre-configured absorption liquid is a more accurate, reliable, simple and convenient method, but the conventional gas absorption device has some disadvantages at present, namely, the problem can not be thoroughly solved all the time because the gas flow is not fully contacted with the absorption liquid and the contact time is short, so that the harmful elements in the gas are not fully absorbed. Therefore, a device capable of trapping harmful elements in the coal gas is needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a rotary absorption device for detecting harmful elements in coal gas, which has reasonable structure and larger reaction contact area and longer reaction time when the coal gas is introduced into absorption liquid.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a rotary absorption device for detecting harmful elements in coal gas comprises a coal gas inlet, an air suction pump, an absorber, a flow meter and a coal gas outlet, wherein the coal gas inlet is connected with the air suction pump, the absorber and the flow meter are sequentially connected, and the flow meter is connected with the coal gas outlet;
the absorber comprises a tank body, an air inlet, an absorption liquid feeding port, a stirring motor, a hollow rotating shaft, a stirring paddle, an air outlet and a liquid outlet, wherein the tank body is provided with the absorption liquid feeding port, the top of the tank body is provided with the air outlet, and the bottom of the tank body is provided with the air inlet and the liquid outlet; the stirring motor drives the hollow rotating shaft to rotate, one end of the hollow rotating shaft is connected with the air inlet in a rotating mode, the other end of the hollow rotating shaft extends into the tank body to be connected with the stirring paddle, the stirring paddle is of a cavity structure and is communicated with the air inlet, and the stirring paddle is provided with an air outlet hole.
An ultrasonic generator is suspended in the tank body.
The number of the air outlet holes is more than two.
The hollow rotating shaft is connected with the tank body through a sealing bearing.
And a coal gas filter screen is fixedly connected in the air inlet.
The absorber is composed of two absorbers which are connected with each other, and the air outlet of one absorber is connected with the air inlet of the other absorber through a gas pipeline.
The stirring motor drives the hollow rotating shaft to rotate through the gear transmission mechanism; the gear transmission mechanism comprises a first gear and a second gear, an output shaft of the stirring motor is fixedly connected with the first gear, the first gear is meshed with the second gear, and the second gear is fixedly connected with the hollow rotating shaft.
One end of the hollow rotating shaft is rotatably connected with the air inlet through a bearing.
Compared with the prior art, the beneficial effects of the utility model are that:
the rotary absorption device for detecting harmful elements in the gas has reasonable structure, low manufacturing cost and simple and convenient operation, the absorber rotates at high speed through the stirring paddle with the air inlet hole, so that gas bubbles in the absorption liquid are small and dispersed, the contact stroke of the bubbles and the absorption liquid is increased, reaction kinetic conditions are provided, and the gas absorption is quicker and more sufficient; the absorber structure adopts double reaction tanks connected in series, thereby ensuring that harmful elements in the coal gas are absorbed more thoroughly.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
Fig. 2 is a schematic view of the structure of the absorber.
Fig. 3 is a schematic connection diagram of the stirring motor.
In the figure: a, a gas inlet B, a suction pump C, an absorber D, a flow meter E and a gas outlet;
1-1# tank air inlet 2-1# tank bearing 3-1# tank stirring motor 4-1# tank hollow rotating shaft 5-1# tank stirring paddle 6-1# tank 7-1# tank absorption liquid feeding port 8-1# tank air outlet 9-1# tank air outlet hole I10-1 # tank air outlet hole II 11-1# tank liquid discharge port 12-gas pipeline 13-2# tank air inlet 14-2# tank bearing 15-2# tank stirring motor 16-2# tank hollow rotating shaft 17-2# tank liquid discharge port 18-2# tank stirring paddle 19-2# tank air outlet hole I20-2 # tank air outlet hole II 21-2# tank absorption liquid feeding port 22-2# tank 23-2# tank 24-gear one 25-gear two.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1 and 2, the rotary absorption device for detecting harmful elements in gas comprises a gas inlet A, an air suction pump B, an absorber C, a flow meter D and a gas outlet E, wherein the gas inlet A is connected with the air suction pump B, the absorber C and the flow meter D are sequentially connected, and the flow meter D is connected with the gas outlet E.
The absorber C comprises a tank body, an air inlet, an absorption liquid feeding port, a stirring motor, a hollow rotating shaft, a stirring paddle, an air outlet and a liquid outlet, wherein the tank body is provided with the absorption liquid feeding port, the top of the tank body is provided with the air outlet, and the bottom of the tank body is provided with the air inlet and the liquid outlet; the hollow axis of rotation of agitator motor drive rotates, and hollow axis of rotation one end passes through the bearing with the air inlet and rotates to be connected, and the other end stretches into jar internal portion and is connected with the stirring rake, and the stirring rake is the cavity structure to be linked together with the air inlet, be equipped with the venthole on the stirring rake, the venthole is more than two, figure 2 is two ventholes, venthole I and venthole II promptly. The mounting position of the stirring paddle is as close to the bottom of the tank body as possible, and the stirring paddle can rotate along with the rotating shaft.
The absorber C is composed of two absorbers C which are connected with each other, the two absorbers C have the same structure, and the air outlet of one absorber C is connected with the air inlet of the other absorber C through a gas pipeline 12. The gas pipeline 12 is Z-shaped. Two absorber C reaction tanks are connected in series. 1# jar venthole I9, 1# jar venthole II, 2# jar venthole I19, 2# jar venthole II 20 all are anti-backflow hole.
The hollow rotating shaft is connected with the tank body through a sealing bearing, so that the hollow rotating shaft can rotate, and gas and liquid do not leak. An ultrasonic generator is suspended in the tank body. The gas filter screen is fixedly connected in the gas inlet to prevent the inside of the tank body from being blocked.
Referring to fig. 2 and 3, the stirring motor drives the hollow rotating shaft to rotate through the gear transmission mechanism; the gear transmission mechanism comprises a first gear 24 and a second gear 25, an output shaft of the stirring motor is fixedly connected with the first gear 24, the first gear 24 is meshed with the second gear 25, and the second gear 25 is fixedly connected with the hollow rotating shaft.
When in use, as shown in figures 1-3, the corresponding absorption liquid is prepared according to the target elements in the coal gas to be measured. Taking the measurement of the chlorine content in the coal gas as an example, deionized water, NaOH, Ca (OH) are adopted 2 Preparing an absorption liquid, wherein the mass concentration of NaOH in the absorption liquid is 10 percent, and Ca (OH) 2 The mass concentration of the liquid is 10 percent, a few drops of phenolphthalein indicator are added, as shown in figure 2, valves of a No. 1 tank absorption liquid adding port 7 and a No. 2 tank absorption liquid adding port 21 are opened, and prepared absorption liquids are respectively added into a No. 1 tank body and a No. 2 tank body, so that the liquid level of the absorption liquids reaches 2/3 points of the tank body height. After a gas inlet A, an air suction pump B, an absorber C, a flow meter D and a gas outlet E are sequentially connected, valves at a tank stirring motor 1# 3, a tank stirring motor 2# 15, the air suction pump B and the gas inlet A are sequentially opened, and the value of the flow meter D at the moment is recorded. As the concentration of the alkali liquor exceeds the color change range of the indicator, the absorption liquid in the tank body of the 1# tank gradually turns red from colorless along with the reaction, the gas is stopped to be introduced after the liquid in the tank body of the 2# tank does not change color or slightly turns red, the valve of the gas inlet A, the air suction pump B and the stirring motor 3 of the tank body of the 1# tank and the stirring motor 15 of the tank body of the 2# tank in the absorber C are closed, and the numerical value of the flow meter D is recorded again. The valves at the No. 1 tank drain port 11 and the No. 2 tank drain port 17 were opened to absorbDischarging the liquid completely, adding the prepared unused absorption liquid into a volumetric flask for constant volume, shaking up fully, and measuring the chlorine content by using a potentiometric titrator ICP-MS. And finally, calculating the chlorine content in the flue gas according to the measured content data, the gas flow and the liquid volume parameters to obtain a final result.
Claims (8)
1. A rotary absorption device for detecting harmful elements in coal gas is characterized by comprising a coal gas inlet, an air suction pump, an absorber, a flow meter and a coal gas outlet, wherein the coal gas inlet is connected with the air suction pump, the absorber and the flow meter are sequentially connected, and the flow meter is connected with the coal gas outlet;
the absorber comprises a tank body, an air inlet, an absorption liquid feeding port, a stirring motor, a hollow rotating shaft, a stirring paddle, an air outlet and a liquid outlet, wherein the tank body is provided with the absorption liquid feeding port, the top of the tank body is provided with the air outlet, and the bottom of the tank body is provided with the air inlet and the liquid outlet; the stirring motor drives the hollow rotating shaft to rotate, one end of the hollow rotating shaft is connected with the air inlet in a rotating mode, the other end of the hollow rotating shaft extends into the tank body to be connected with the stirring paddle, the stirring paddle is of a cavity structure and is communicated with the air inlet, and the stirring paddle is provided with an air outlet hole.
2. The rotary absorption device for detecting harmful elements in coal gas as claimed in claim 1, wherein an ultrasonic generator is suspended in the tank.
3. The rotary absorption device for detecting the harmful elements in the coal gas as claimed in claim 1, wherein the number of the air outlet holes is more than two.
4. The rotary absorption device for detecting the harmful elements in the gas as claimed in claim 1, wherein the hollow rotating shaft is connected with the tank body through a sealed bearing.
5. The rotary absorption device for detecting harmful elements in coal gas as claimed in claim 1, wherein a coal gas filter screen is fixedly connected in the air inlet.
6. The rotary absorption device for detecting harmful elements in coal gas as claimed in claim 1, wherein said absorber is composed of two absorbers connected with each other, and the gas outlet of one absorber is connected with the gas inlet of the other absorber through a coal gas pipeline.
7. The rotary absorption device for detecting harmful elements in coal gas as claimed in claim 1, wherein the stirring motor drives the hollow rotating shaft to rotate through a gear transmission mechanism; the gear transmission mechanism comprises a first gear and a second gear, an output shaft of the stirring motor is fixedly connected with the first gear, the first gear is meshed with the second gear, and the second gear is fixedly connected with the hollow rotating shaft.
8. The rotary absorption device for detecting the harmful elements in the coal gas as claimed in claim 1, wherein one end of the hollow rotating shaft is rotatably connected with the air inlet through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221019304.9U CN217442971U (en) | 2022-04-29 | 2022-04-29 | Rotary absorption device for detecting harmful elements in coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221019304.9U CN217442971U (en) | 2022-04-29 | 2022-04-29 | Rotary absorption device for detecting harmful elements in coal gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217442971U true CN217442971U (en) | 2022-09-16 |
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ID=83220383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221019304.9U Active CN217442971U (en) | 2022-04-29 | 2022-04-29 | Rotary absorption device for detecting harmful elements in coal gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217442971U (en) |
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2022
- 2022-04-29 CN CN202221019304.9U patent/CN217442971U/en active Active
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