CN220835652U - Constant temperature device for Kjeldahl nitrogen-fixing waste gas purification bottle - Google Patents
Constant temperature device for Kjeldahl nitrogen-fixing waste gas purification bottle Download PDFInfo
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- CN220835652U CN220835652U CN202322653044.1U CN202322653044U CN220835652U CN 220835652 U CN220835652 U CN 220835652U CN 202322653044 U CN202322653044 U CN 202322653044U CN 220835652 U CN220835652 U CN 220835652U
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- Prior art keywords
- bottle
- gas
- constant temperature
- inlet pipe
- gas collection
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- 239000002912 waste gas Substances 0.000 title claims abstract description 22
- 238000000746 purification Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000741 silica gel Substances 0.000 claims abstract description 6
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 57
- 239000013078 crystal Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000029087 digestion Effects 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000007696 Kjeldahl method Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000002133 sample digestion Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to the technical field of protein content detection devices, in particular to a constant temperature device for a Kjeldahl nitrogen-fixing waste gas purification bottle, which comprises a gas collection bottle, wherein a bottle cap is arranged above the gas collection bottle, a gas inlet pipe penetrates through the bottle cap and extends into solution of the gas collection bottle, the bottle cap is provided with a gas outlet, the gas collection bottle is arranged in a constant temperature water tank, the bottom of the gas inlet pipe is hemispherical, a plurality of gas inlet holes are formed in the cambered surface of the gas inlet pipe, the bottom of the gas inlet pipe extends to be contacted with the inner bottom wall of the gas collection bottle, a limiting block is arranged on the inner bottom wall of the constant temperature water tank, the outer layer of the limiting block is made of silica gel, and the gas collection bottle is detachably connected with the bottle cap. The beneficial effects of the utility model are as follows: according to the utility model, the gas collection bottle is arranged in the constant temperature water tank, so that the sodium hydroxide solution wrapped by the warm water in the constant temperature water tank is at a proper temperature, and the sodium hydroxide solution is prevented from being influenced by the low outside temperature to precipitate crystals at the outlet of the gas inlet pipe, so that the outlet of the gas inlet pipe is blocked.
Description
Technical Field
The utility model relates to the technical field of protein content detection devices, in particular to a constant temperature device for a Kjeldahl nitrogen-fixing waste gas purification bottle.
Background
The Kjeldahl method is one method of determining the total nitrogen in a compound or mixture. The method comprises the steps of digesting a sample with concentrated sulfuric acid in the presence of a catalyst to convert organic nitrogen into inorganic ammonium salt, converting the ammonium salt into ammonia under alkaline condition, distilling out with water vapor and absorbing excessive boric acid solution, and titrating with standard hydrochloric acid to calculate the nitrogen content in the sample. Since the nitrogen content of protein is relatively constant, the protein content can be calculated from the nitrogen content, and thus this method is a classical protein quantification method.
The Kjeldahl nitrogen determination instrument digestion furnace can generate a large amount of acid toxic gas in the process of sample digestion, and the equipped waste gas purifying and absorbing device can ensure that the discharged tail gas is clean and harmless. But in winter, cooling air is continuously blown into the gas collecting bottle by the gas inlet pipe along with the decrease of the air temperature and the gas collecting process, so that the solubility of sodium hydroxide of the solution in the digestion bottle is reduced, the sodium hydroxide is crystallized and separated out, the outlet of the gas inlet pipe is blocked, and then waste gas cannot be conveyed into the digestion bottle for absorption and digestion, and the waste gas absorption device is invalid.
Disclosure of Invention
The utility model aims to provide a constant temperature device for a Kjeldahl nitrogen-fixing waste gas purifying bottle, which aims at overcoming the defects that sodium hydroxide is crystallized and separated out to block an outlet of an air inlet pipe and cause a waste gas absorbing device to fail along with the decrease of air temperature in the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The constant temperature device for the Kjeldahl nitrogen-fixing waste gas purifying bottle comprises a gas collecting bottle, wherein a bottle cover is arranged above the gas collecting bottle, an air inlet pipe penetrates through the bottle cover and extends into solution of the gas collecting bottle, the bottle cover is provided with an air outlet, and the gas collecting bottle is arranged in a constant temperature water tank.
Further, the bottom of the air inlet pipe is hemispherical, and a plurality of air inlet holes are formed in the cambered surface of the air inlet pipe.
Further, the bottom of the air inlet pipe extends to be in contact with the inner bottom wall of the air collection bottle.
Further, a limiting block is arranged on the inner bottom wall of the constant-temperature water tank.
Furthermore, the outer layer of the limiting block is made of silica gel.
Further, the gas collecting bottle and the bottle cap are detachably connected.
Compared with the prior art, the utility model has the beneficial effects that:
According to the utility model, the gas collection bottle is arranged in the constant temperature water tank, so that the sodium hydroxide solution wrapped by the warm water in the constant temperature water tank is at a proper temperature, and the sodium hydroxide solution is prevented from being influenced by the low outside temperature to precipitate crystals at the outlet of the gas inlet pipe so as to block the outlet of the gas inlet pipe;
Meanwhile, the limiting block with the outer layer made of silica gel is arranged in the constant-temperature water tank, so that the gas collection bottle is positioned in the middle of the constant-temperature water tank, uneven temperature inside the gas collection bottle is avoided, and damage to the gas collection bottle is avoided;
In addition, the waste gas is purified and absorbed by the sodium hydroxide solution more fully through the air inlet hole.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a constant temperature device for a Kjeldahl nitrogen-fixing waste gas purifying bottle;
Fig. 2 is a front cross-sectional view of a constant temperature device for a kjeldahl nitrogen-fixing waste gas purifying bottle.
Wherein, the reference numerals are as follows:
A gas collecting bottle; 2. a constant temperature water tank; 3. a bottle cap; 4. an air inlet pipe; 5. an air outlet; 6. an air inlet hole; 7. and a limiting block.
Detailed Description
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In order to facilitate understanding, please refer to fig. 1-2, this embodiment provides a constant temperature device for a kjeldahl nitrogen-fixing waste gas purification bottle, including a gas collection bottle 1 made of transparent glass material, a bottle cap 3 can be detachably connected above the gas collection bottle 1, an air inlet pipe 4 for conveying waste gas generated by kjeldahl nitrogen fixing extends into a solution of the gas collection bottle 1 through the bottle cap 3, an air outlet 5 for discharging air in an inner layer of the gas collection bottle 1 is further provided on the bottle cap 3, the gas collection bottle 1 is arranged in a constant temperature water tank 2, the constant temperature water tank 2 can keep internal water in a constant temperature state, a limit block 7 for limiting and fixing the gas collection bottle 1 is arranged at the bottom in the constant temperature water tank 2, the limit block 7 can enable the gas collection bottle 1 to be positioned in the middle of the constant temperature water tank 2 while limiting the gas collection bottle 1, the outer layer of the limit block 7 is made of silica gel material, and damage to the gas collection bottle 1 caused by collision to the gas collection bottle 1 in the process of placing the gas collection bottle 1 is avoided. Before the purification starts, a user adds 40% sodium hydroxide solution in the gas collection bottle 1, and places the gas collection bottle 1 in the constant temperature water tank 2 in contrast to the position of the limiting block 7, so that the sodium hydroxide solution wrapped by warm water in the constant temperature water tank 2 is at a proper temperature, and the sodium hydroxide solution is prevented from being influenced by low outside air temperature to precipitate crystals at the outlet of the gas inlet pipe 4 so as to block the outlet of the gas inlet pipe 4.
Referring to fig. 2, the bottom of the air inlet pipe 4 is hemispherical, a plurality of air inlet holes 6 are formed on the cambered surface of the air inlet pipe, the bottom of the air inlet pipe 4 extends to contact with the inner bottom wall of the air collecting bottle 1, and the contact time between the waste gas conveyed into the air collecting bottle 1 from the air inlet pipe 4 and the sodium hydroxide solution is increased, so that the waste gas is purified and absorbed by the sodium hydroxide solution more fully; meanwhile, the exhaust gas conveyed into the gas collecting bottle 1 from the gas inlet pipe 4 can enter the sodium hydroxide solution in the form of bubbles through the plurality of gas inlet holes 6, so that the contact area of the exhaust gas and the sodium hydroxide solution is increased, and the exhaust gas is further purified and absorbed by the sodium hydroxide solution more fully.
The beneficial effects of the embodiment are that:
in the embodiment, the gas collection bottle 1 is arranged in the constant temperature water tank 2, so that the sodium hydroxide solution wrapped by the warm water in the constant temperature water tank 2 is at a proper temperature, and the sodium hydroxide solution is prevented from being influenced by the low outside air temperature to precipitate crystals at the outlet of the gas inlet pipe 4 so as to block the outlet of the gas inlet pipe 4; meanwhile, the limiting block 7 with the outer layer made of silica gel is arranged in the constant-temperature water tank 2, so that the gas collection bottle 1 is positioned in the middle of the constant-temperature water tank 2, uneven temperature inside the gas collection bottle 1 is avoided, and damage to the gas collection bottle 1 is avoided; in addition, the exhaust gas is purified and absorbed by the sodium hydroxide solution more fully through the air inlet hole 6.
Although the present utility model has been described with reference to the above preferred embodiments, it should be understood that the present utility model is not limited to the above preferred embodiments, and various changes and modifications can be made therein by one skilled in the art without departing from the spirit and scope of the present utility model.
Claims (6)
1. The utility model provides a constant temperature equipment of gas cleaning bottle is decided to Kjeldahl, its characterized in that, including gas collection bottle (1), gas collection bottle (1) top is equipped with bottle lid (3), and intake pipe (4) run through bottle lid (3) and extend to in the solution of gas collection bottle (1), gas outlet (5) have been seted up to bottle lid (3), gas collection bottle (1) set up in constant temperature water tank (2).
2. The constant temperature device of the Kjeldahl nitrogen-fixing waste gas purifying bottle according to claim 1, wherein the bottom of the air inlet pipe (4) is hemispherical, and a plurality of air inlet holes (6) are formed on the cambered surface of the air inlet pipe.
3. The constant temperature device of the Kjeldahl nitrogen-fixing waste gas purifying bottle according to claim 2, wherein the bottom of the gas inlet pipe (4) extends to be in contact with the inner bottom wall of the gas collecting bottle (1).
4. The constant temperature device of the Kjeldahl nitrogen determination waste gas purification bottle according to claim 1, wherein a limiting block (7) is arranged on the inner bottom wall of the constant temperature water tank (2).
5. The constant temperature device for the Kjeldahl nitrogen determination waste gas purification bottle according to claim 4, wherein the outer layer of the limiting block (7) is made of silica gel.
6. The constant temperature device of the Kjeldahl nitrogen-fixing waste gas purification bottle according to claim 1, wherein the gas collection bottle (1) is detachably connected with the bottle cap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322653044.1U CN220835652U (en) | 2023-09-28 | 2023-09-28 | Constant temperature device for Kjeldahl nitrogen-fixing waste gas purification bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322653044.1U CN220835652U (en) | 2023-09-28 | 2023-09-28 | Constant temperature device for Kjeldahl nitrogen-fixing waste gas purification bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220835652U true CN220835652U (en) | 2024-04-26 |
Family
ID=90775182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322653044.1U Active CN220835652U (en) | 2023-09-28 | 2023-09-28 | Constant temperature device for Kjeldahl nitrogen-fixing waste gas purification bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220835652U (en) |
-
2023
- 2023-09-28 CN CN202322653044.1U patent/CN220835652U/en active Active
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