CN212942257U - Laboratory hydrogen chloride gas absorbing device - Google Patents
Laboratory hydrogen chloride gas absorbing device Download PDFInfo
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- CN212942257U CN212942257U CN202021440449.7U CN202021440449U CN212942257U CN 212942257 U CN212942257 U CN 212942257U CN 202021440449 U CN202021440449 U CN 202021440449U CN 212942257 U CN212942257 U CN 212942257U
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Abstract
The utility model belongs to the technical field of laboratory waste gas recovery treatment, and discloses a laboratory hydrogen chloride gas absorption device, which is an anti-suck-back device, is provided with a first gas inlet connecting pipe and a first gas outlet connecting pipe, and is inserted into the device through a first outlet at the top of the device; a pressure control device having a second inlet connection pipe and a second outlet connection pipe and inserted into the interior thereof through a second outlet at the top of the device; and a gas absorption device having a third air inlet connection pipe and a first water inlet connection pipe and inserted into the interior thereof through a third outlet at the top of the device. The utility model discloses the device absorption efficiency is high, can the controlling means internal pressure, has realized absorbing hydrogen chloride gas's high efficiency, has reduced the volatile risk of corrosive waste gas, this simple structure, and low in cost can extensively promote in chemical experiment teaching and small-scale synthesis experiment.
Description
Technical Field
The utility model relates to a laboratory waste gas recovery handles technical field, concretely relates to laboratory hydrogen chloride gas absorbing device.
Background
In some small-scale chemical synthesis processes and chemical experiment teaching processes, strong corrosive gases such as hydrogen chloride and the like can be generated, so that small-range pollution and physical injury to experimenters are caused. However, the waste gas absorption device adopted in the laboratory at present is generally a simple device for a basic chemistry experiment recommending that a funnel is inserted into a beaker filled with alkali liquor, and the device has low absorption efficiency and often has gas overflowing to enter air, so that physical injury, local air pollution and corrosion of experimental equipment of experimenters are caused.
At present, some public laboratory hydrogen chloride absorption devices are provided, although the risk of gas leakage is reduced, high-salinity wastewater can be generated by using sodium hydroxide absorption liquid, the device needs to be operated at fixed time and at single time by depending on an air pump, and the problems that the control of gas pressure in the device cannot be realized and the like cannot be completely met are still solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem among the background art, overcome chemical experiment teaching and the synthetic preparation experimentation of small-scale, hydrogen chloride gas absorbing prior art defect and satisfy the experiment demand, the utility model provides a laboratory hydrogen chloride gas absorbing device.
In order to achieve the above object, the utility model adopts the following technical scheme:
a laboratory hydrogen chloride gas absorption apparatus connected to a reaction apparatus for generating hydrogen chloride gas, the apparatus comprising:
the anti-suck-back device is provided with a first air inlet connecting pipe and a first air outlet connecting pipe and is inserted into the device through a first outlet at the top of the device;
a pressure control device having a second inlet connection pipe and a second outlet connection pipe and inserted into the interior thereof through a second outlet at the top of the device; and
a gas absorption device having a third air inlet connection pipe and a first water inlet connection pipe and inserted into the interior thereof through a third outlet at the top of the device;
the first gas inlet connecting pipe is connected with the outlet end of the reaction device for generating hydrogen chloride gas, the first gas outlet connecting pipe is connected with the second gas inlet connecting pipe, and the second gas outlet connecting pipe is connected with the third gas inlet connecting pipe through rubber pipes.
Further, the first outlet, the second outlet and the third outlet are sealed by rubber plugs, and each rubber plug is provided with at least 2 holes for the corresponding connecting pipe to pass through in a sealing manner.
Furthermore, the depth of the first air inlet connecting pipe inserted into the suck-back prevention device is smaller than the depth of the first air outlet pipe.
Furthermore, the volume of the suck-back prevention device can be adjusted according to the requirement.
Furthermore, the depth of the second air inlet connecting pipe inserted into the pressure control device is greater than the depth of the second air outlet connecting pipe.
Furthermore, liquid is also filled in the pressure control device, and the liquid level is higher than the bottom end of the second air inlet connecting pipe and is not higher than the bottom end of the second air outlet connecting pipe.
Further, the liquid includes, but is not limited to, an aqueous solution or an acidic solution, such as may be water, a hydrochloric acid solution, or a sulfuric acid solution.
Furthermore, the upper end of the first water inlet connecting pipe is connected with tap water, and the flow of the water inlet pipe is controlled through a tap water switch, so that the spraying degree of the spray head is controlled; the lower end is connected with a spray head, and the height of the spray head is higher than that of the bottom end of the third air inlet connecting pipe.
Furthermore, the side wall of the lower part of the gas absorption device is also provided with a water outlet, the water outlet is of an inverted L shape, and the horizontal height of the water outlet is not less than 5cm away from the bottom of the device.
Furthermore, the anti-suck-back device, the pressure control device and the gas absorption device are all made of glass materials.
The utility model discloses a laboratory hydrogen chloride gas absorbing device can simplify the device as required when using, nevertheless contains gas absorbing device at least.
The hydrogen chloride gas absorption method of the device of the utility model comprises the following steps:
hydrogen chloride gas generated by the reaction device reaches the suck-back prevention device through the first air inlet connecting pipe and flows out of the first air outlet connecting pipe, and if waste water is sucked back due to pressure change, the hydrogen chloride gas enters the suck-back prevention device to be prevented from entering the reaction device;
the hydrogen chloride gas entering the suck-back prevention device flows out of the first gas outlet connecting pipe, is guided into the second gas inlet connecting pipe through the rubber pipe and reaches the pressure control device, and when the pressure of the hydrogen chloride gas is higher than the liquid column pressure formed by inserting liquid into the second gas inlet connecting pipe, the gas bubbles and overflows from the second gas inlet connecting pipe and is discharged to the pressure control device through the second gas outlet connecting pipe; the device can realize the pressure control of the reaction system by adjusting the depth of the second air inlet connecting pipe inserted into the liquid or adjusting the density of the liquid;
hydrogen chloride gas entering the pressure control device flows out of the second gas outlet connecting pipe and is guided into the third gas inlet connecting pipe through the rubber pipe to reach the gas absorption device; leading tap water into the spray head through the first water inlet connecting pipe to form water mist-shaped liquid drops, and fully contacting with hydrogen chloride gas discharged by the third air inlet connecting pipe so as to be absorbed and converted into acid wastewater;
the acidic wastewater flows to the bottom of the gas absorption device, and the water outlet is higher than the bottom of the gas absorption device, so that a water seal layer with a certain height can be formed to seal the water outlet with water, and the overflow of hydrogen chloride gas which is not absorbed in time is avoided.
The utility model has the advantages that:
(1) the utility model discloses can realize absorbing the high efficiency of hydrogen chloride gas, reduce the volatile risk of corrosivity waste gas. The device has simple structure and low cost, and can be widely popularized in chemical experiment teaching and small-scale synthesis experiments.
(2) The utility model discloses the gas absorption device who sets up, lower extreme set up U type tubular construction, form the water seal during the operation, have avoided spilling over of hydrogen chloride gas, ensure that hydrogen chloride gas absorbs completely.
(3) The utility model discloses set up pressure control device, through liquid level among the regulation pressure control device, carried out automatic control to the pressure in the reaction system, pressure is greater than liquid column pressure in the system, then exhausts automatically, guarantees the pressure safety in the system and satisfies the reaction type that needs certain pressure.
(4) The utility model discloses increased and prevented suck-back device, guaranteed that the absorption liquid can not reduce the experiment risk because of pressure differential entering reactor.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, wherein the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The schematic structural diagram of this device is shown in fig. 1, the utility model provides a laboratory hydrogen chloride gas absorbing device is connected with the reaction unit 400 who produces hydrogen chloride gas, and the device contains:
a suck back prevention device 100 having a first inlet connection pipe 101 and a first outlet connection pipe 102 and inserted therein through a first outlet at the top of the device; the first air inlet connecting pipe 101 is connected with the outlet end 401 of the reaction device 400 for generating hydrogen chloride gas through a rubber pipe; the depth of the first air inlet connecting pipe 101 inserted into the suck-back prevention device 100 is smaller than the depth of the first air outlet pipe 102;
a pressure control device 200 having a second inlet connection pipe 201 and a second outlet connection pipe 202 and inserted therein through a second outlet at the top of the device; the first air outlet connecting pipe 102 is connected with the second air inlet connecting pipe 201 through a rubber pipe; the depth of the second air inlet connection pipe 201 inserted into the pressure control device 200 is greater than the depth of the second air outlet connection pipe 202; 6 mol/L sulfuric acid is also filled in the pressure control device 200, and the liquid level of the sulfuric acid is higher than the bottom end of the second air inlet connecting pipe 201 and is not higher than the bottom end of the second air outlet connecting pipe 202; and
a gas absorption device 300 having a third air inlet connection pipe 301 and a first water inlet connection pipe 302 and inserted therein through a third outlet at the top of the device; the second air outlet connecting pipe 202 is connected with the third air inlet connecting pipe 301 through a rubber pipe; the upper end of the first water inlet connecting pipe 302 is connected with tap water, the lower end of the first water inlet connecting pipe is connected with a spray head 303, and the flow of the water inlet pipe is controlled through a tap water switch, so that the spraying degree of the spray head 303 is controlled; the height of the spray head 303 is higher than that of the bottom end of the third air inlet connecting pipe 301; the side wall of the lower part is also provided with a water outlet 304, the water outlet 304 is of an inverted L shape, and the horizontal height of the water outlet 304 is 5cm away from the bottom of the device;
in the example, each connecting pipe is a glass pipe; the first outlet, the second outlet and the third outlet are sealed by rubber plugs with proper sizes, and each rubber plug is provided with at least 2 holes for the sealing penetration of each corresponding connecting pipe; the anti-suck-back device is spherical, the pressure control device is cylindrical, the gas absorption device is cylindrical, and the three devices are made of glass materials.
A hydrogen chloride gas absorption method:
hydrogen chloride gas generated by the reaction device 400 enters the suck-back prevention device 100 through the outlet end 401, the rubber tube and the first air inlet connecting tube 101 and is led out through the first air outlet connecting tube 102; enters the pressure control device 200 through the rubber tube and the second air inlet connecting tube 201, and when the pressure of the device is higher than the pressure of the sulfuric acid liquid column, bubbles are formed at the bottom end of the second air inlet connecting tube 201, and the sulfuric acid solution floats upwards and is discharged through the second air outlet connecting tube 201; and then enters the gas absorption device 300 through the rubber pipe and the third air inlet connecting pipe 301, because the bottom end of the third air inlet connecting pipe 301 is lower than the height of the spray head 303, the hydrogen chloride gas can be completely covered and absorbed by the water mist sprayed by the spray head 303, and the height of the water outlet 304 is 5cm away from the gas absorption device 300, a liquid level is formed at the bottom of the device, so that the hydrogen chloride gas which is not absorbed can be prevented from overflowing from the water outlet 304, and the formed acidic wastewater can be discharged through the water outlet 304.
As above, the utility model discloses can absorb the gaseous high efficiency of hydrogen chloride to can the controlling means internal pressure, satisfy the laboratory to the absorptive demand of hydrogen chloride, simultaneously the utility model discloses the volume is less, simple manufacture, low in cost, is applicable to chemical experiment teaching and the synthetic preparation experiment of small-scale chemistry.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A laboratory hydrogen chloride gas absorption apparatus connected to a reaction apparatus for generating hydrogen chloride gas, the apparatus comprising:
the anti-suck-back device is provided with a first air inlet connecting pipe and a first air outlet connecting pipe and is inserted into the device through a first outlet at the top of the device;
a pressure control device having a second inlet connection pipe and a second outlet connection pipe and inserted into the interior thereof through a second outlet at the top of the device; and
a gas absorption device having a third air inlet connection pipe and a first water inlet connection pipe and inserted into the interior thereof through a third outlet at the top of the device;
the first gas inlet connecting pipe is connected with the outlet end of the reaction device for generating hydrogen chloride gas, the first gas outlet connecting pipe is connected with the second gas inlet connecting pipe, and the second gas outlet connecting pipe is connected with the third gas inlet connecting pipe through rubber pipes.
2. The device of claim 1, wherein the first, second and third outlets are sealed with rubber plugs, each of which has at least 2 holes for the passage of the corresponding connecting tube.
3. The apparatus of claim 1, wherein the first inlet connection tube is inserted into the anti-suck back apparatus to a depth less than the depth of insertion of the first outlet connection tube.
4. The apparatus of claim 1, wherein the second inlet connection tube is inserted into the pressure control device to a greater depth than the second outlet connection tube.
5. The apparatus of claim 4, wherein the pressure control device further contains a liquid, and the liquid level is higher than the bottom end of the second inlet connecting pipe and not higher than the bottom end of the second outlet connecting pipe.
6. The apparatus of claim 5, wherein the liquid comprises but is not limited to an aqueous or acidic solution.
7. The apparatus as claimed in claim 1, wherein the first water inlet connection pipe is connected to tap water at an upper end thereof and connected to a spray head at a lower end thereof, and the spray head is higher than the third air inlet connection pipe at a lower end thereof.
8. The apparatus of claim 1 or 6, wherein the lower side wall of the gas absorption device is further provided with a water outlet, and the horizontal height of the water outlet is not less than 5cm away from the bottom of the apparatus.
9. The apparatus of claim 1, wherein the back-suction prevention device, the pressure control device, and the gas absorbing device are all made of glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021440449.7U CN212942257U (en) | 2020-07-21 | 2020-07-21 | Laboratory hydrogen chloride gas absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021440449.7U CN212942257U (en) | 2020-07-21 | 2020-07-21 | Laboratory hydrogen chloride gas absorbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212942257U true CN212942257U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021440449.7U Active CN212942257U (en) | 2020-07-21 | 2020-07-21 | Laboratory hydrogen chloride gas absorbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212942257U (en) |
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2020
- 2020-07-21 CN CN202021440449.7U patent/CN212942257U/en active Active
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