Adsorption system for boron trichloride gas purification
By designing an adsorption system for purification of boron trichloride gas, using adsorbents and activated carbon to remove heavy and light components in boron trichloride, the problem of difficulty in removing impurities such as N2 and CO in the prior art has been solved, and significantly improved Purity and adsorption of boron trichloride.
Patent Information
- Application Number
- CN202420778041.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The existing boron trichloride adsorption device is difficult to effectively remove light impurities such as N2 and CO, resulting in unsatisfactory adsorption.
An adsorption system for purification of boron trichloride gas is designed, including a raw material bottle, a first adsorption chamber, a second adsorption chamber, a distillation tower and a recovery tank. The heavy and light components are removed by adsorbent and activated carbon respectively to improve the The purity of boron trichloride.
Through the adsorption and distillation process, impurities such as silicon tetrachloride, CO, Cl2 and N2 in boron trichloride were successfully removed, which significantly improved the purity of boron trichloride and achieved a more ideal adsorption effect.
Smart Images
Figure CN222151452U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boron trichloride purification, in particular to an adsorption system for purifying boron trichloride gas. Background Art
[0002] Boron trichloride is a colorless fuming liquid or gas with a pungent acidic smell and is easily deliquescent. It is soluble in benzene and carbon disulfide, has a high chemical reactivity, and decomposes explosively when in contact with water. It may generate explosive chloroacetylene with copper and its alloys, which is highly corrosive to most metals and can also corrode glass when in contact with moisture. It can produce thick white corrosive smoke in humid air. It reacts violently with water, releasing irritating and corrosive hydrogen chloride gas.
[0003] China's authorized utility model disclosure (announcement) number: CN212491675U A boron trichloride adsorption device, including a raw material cylinder, an adsorption column, a finished product tank and a neutralization tank, the bottle mouth of the raw material cylinder is connected to the inlet of the adsorption column, and the outlet of the adsorption column is respectively connected to the inlet of the finished product tank and the inlet of the neutralization tank.
[0004] However, in the above prior art, the adsorption of boron trichloride is carried out by adsorbing silicon-containing impurities through an adsorption column. However, the initial boron trichloride still has a certain amount of N 2 and CO impurities, resulting in the adsorption performance of the adsorption device of the utility model being less than ideal. Utility Model Content
[0005] The utility model aims to provide an adsorption system for purifying boron trichloride gas to solve the problems raised in the above background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A boron trichloride gas purification adsorption system comprises a raw material bottle, a first adsorption chamber, a second adsorption chamber, a distillation tower, a recovery tank, and a finished product tank. The first adsorption chamber is arranged on the side of the raw material bottle, the second adsorption chamber is arranged on the side of the first adsorption chamber, the distillation tower is arranged on the side of the second adsorption chamber, the finished product tank is arranged on the side of the distillation tower, and the recovery tank is arranged at the rear of the distillation tower. A first connecting pipe is extended at the top of the raw material bottle, and the other end of the first connecting pipe is connected to the top of the first adsorption chamber. A second connecting pipe is extended at the bottom of the first adsorption chamber, and the other end of the second connecting pipe is located at the top of the second adsorption chamber. A third connecting pipe is extended at the bottom of the second adsorption chamber, and the other end of the third connecting pipe is connected to the feed port of the distillation tower. The top and bottom of the distillation tower are waste gas port and exhaust port respectively. A fifth connecting pipe is arranged at the waste gas port, and the other end of the fifth connecting pipe is connected to the top of the recovery tank. A fourth connecting pipe is arranged at the exhaust port, and the other end of the fourth connecting pipe is connected to the bottom of the finished product tank.
[0008] Preferably, a gas flow meter is provided on the surface of the raw material bottle end of the first connecting tube.
[0009] Preferably, a first solenoid valve is provided at the distillation tower end of the third connecting pipe.
[0010] Preferably, a second solenoid valve is provided at the distillation tower end of the fourth connecting pipe.
[0011] Preferably, a third solenoid valve is provided at the distillation tower end of the fifth connecting pipe.
[0012] Preferably, the first adsorption chamber is filled with adsorbent, and the second adsorption chamber is filled with activated carbon.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] The utility model discloses an adsorption system for purifying boron trichloride gas, which is mainly divided into adsorption and distillation processes. The heavy components (silicon tetrachloride) contained in the boron trichloride are removed by adsorption, and the light components (CO, Cl2 and N2, etc.) in the boron trichloride are removed by distillation. After passing through the adsorption system, the purity of the boron trichloride is improved, and the utility model has certain practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] In the figure: 1. raw material bottle; 2. first connecting pipe; 3. gas flow meter; 4. first adsorption chamber; 5. second connecting pipe; 6. second adsorption chamber; 7. third connecting pipe; 8. first solenoid valve; 9. recovery tank; 10. distillation tower; 11. fourth connecting pipe; 12. second solenoid valve; 13. finished product tank; 14. fifth connecting pipe; 15. third solenoid valve. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0020] See also Figure 1 , the utility model provides a technical solution:
[0021] An adsorption system for purifying boron trichloride gas comprises a raw material bottle 1, a first adsorption chamber 4, a second adsorption chamber 6, a distillation tower 10, a recovery tank 9, and a finished product tank 13. The first adsorption chamber 4 is arranged on the side of the raw material bottle 1, the second adsorption chamber 6 is arranged on the side of the first adsorption chamber 4, the distillation tower 10 is arranged on the side of the second adsorption chamber 6, the finished product tank 13 is arranged on the side of the distillation tower 10, and the recovery tank 9 is arranged at the rear of the distillation tower 10. A first connecting pipe 2 is extended from the top of the raw material bottle 1, and the other end of the first connecting pipe 2 is connected to the top of the first adsorption chamber 4. A second connecting pipe 5 is extended from the bottom of the first adsorption chamber 4, and the other end of the second connecting pipe 5 is located at the top of the second adsorption chamber 6. A third connecting pipe 7 is extended from the bottom of the second adsorption chamber 6, and the other end of the third connecting pipe 7 is connected to the feed port of the distillation tower 10. The top and bottom of the distillation tower 10 are respectively a waste gas port and an exhaust port. A fifth connecting pipe 14 is arranged at the waste gas port, and the other end of the fifth connecting pipe 14 is connected to the top of the recovery tank 9. A fourth connecting pipe 11 is arranged at the exhaust port, and the other end of the fourth connecting pipe 11 is connected to the bottom of the finished product tank 13.
[0022] Furthermore, a gas flow meter 3 is provided on the surface end of the raw material bottle 1 of the first connecting tube 2 .
[0023] Furthermore, a first solenoid valve 8 is provided at the end of the distillation tower 10 of the third connecting pipe 7 .
[0024] Furthermore, a second solenoid valve 12 is provided at the end of the distillation tower 10 of the fourth connecting pipe 11 .
[0025] Furthermore, a third solenoid valve 15 is provided at the end of the distillation tower 10 of the fifth connecting pipe 14 .
[0026] Furthermore, the first adsorption chamber 4 is filled with adsorbent, and the second adsorption chamber 6 is filled with activated carbon.
[0027] Working principle: When in use, first turn on the switch of the raw material bottle 1, the boron trichloride gas will enter the first adsorption chamber 4 through the first connecting pipe 2, the adsorbent in the first adsorption chamber 4 will remove the heavy components in the boron trichloride, and then the boron trichloride will enter the second adsorption chamber 6 through the second connecting pipe 5, and the second adsorption chamber 6 will perform secondary adsorption on the heavy components in the boron trichloride, thereby ensuring that the heavy components in the boron trichloride are removed, and then the boron trichloride will enter the distillation tower 10 through the third connecting pipe 7. The distillation of boron trichloride in the distillation tower 10 is a prior art and will not be repeated here. It should be noted that the light components distilled out will enter the recovery tank 9 from the fifth connecting pipe 14, and the remaining high-purity boron trichloride will enter the finished product tank 13 from the fourth connecting pipe 11.
[0028] It should be noted that a gas flow meter 3 is provided at the first connecting pipe 2. When the boron trichloride that has passed through the first adsorption chamber 4 and the second adsorption chamber 6 enters the distillation tower 10 from the feed port through the third connecting pipe 7, the first solenoid valve 8 will be in a closed state during the distillation process, and the raw material bottle 1 will still be in an open state, which may cause serious effects for a long time. In the utility model, when the first solenoid valve 8 is closed, the staff needs to turn down the switch of the raw material bottle 1, and it is best to reduce the gas flow rate to 50% to 60% of the first solenoid valve 8 in the open state. In the utility model, the gas flow rate can be appropriately adjusted according to the value displayed by the gas flow meter 3.
[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An adsorption system for purifying boron trichloride gas, comprising a raw material bottle (1), a first adsorption chamber (4), a second adsorption chamber (6), a distillation tower (10), a recovery tank (9), and a finished product tank (13), characterized in that: A first adsorption chamber (4) is arranged on the side of the raw material bottle (1), a second adsorption chamber (6) is arranged on the side of the first adsorption chamber (4), a distillation tower (10) is arranged on the side of the second adsorption chamber (6), a finished product tank (13) is arranged on the side of the distillation tower (10), a recovery tank (9) is arranged at the rear of the distillation tower (10), a first connecting pipe (2) is extended from the top of the raw material bottle (1), the other end of the first connecting pipe (2) is connected to the top of the first adsorption chamber (4), a second connecting pipe (5) is extended from the bottom of the first adsorption chamber (4), and the second connecting pipe (6) is arranged at the bottom of the first adsorption chamber (4). The other end of the second connecting pipe (5) is located at the top of the second adsorption chamber (6); the third connecting pipe (7) is extended from the bottom of the second adsorption chamber (6); the other end of the third connecting pipe (7) is connected to the feed port of the distillation tower (10); the top and bottom of the distillation tower (10) are respectively a waste gas port and an exhaust port; a fifth connecting pipe (14) is provided at the waste gas port; the other end of the fifth connecting pipe (14) is connected to the top of the recovery tank (9); a fourth connecting pipe (11) is provided at the exhaust port; the other end of the fourth connecting pipe (11) is connected to the bottom of the finished product tank (13).
2. The boron trichloride gas purification adsorption system according to claim 1, characterized in that: A gas flow meter (3) is provided at the end of the raw material bottle (1) on the surface of the first connecting tube (2).
3. The boron trichloride gas purification adsorption system according to claim 1, characterized in that: The distillation tower (10) end of the third connecting pipe (7) is provided with a first solenoid valve (8).
4. The boron trichloride gas purification adsorption system according to claim 1, characterized in that: The distillation tower (10) end of the fourth connecting pipe (11) is provided with a second solenoid valve (12).
5. The boron trichloride gas purification adsorption system according to claim 1, characterized in that: The distillation tower (10) end of the fifth connecting pipe (14) is provided with a third solenoid valve (15).
6. The boron trichloride gas purification adsorption system according to claim 1, characterized in that: The first adsorption chamber (4) is filled with an adsorbent, and the second adsorption chamber (6) is filled with activated carbon.