CN215161011U - A high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid - Google Patents
A high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid Download PDFInfo
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- CN215161011U CN215161011U CN202121779591.9U CN202121779591U CN215161011U CN 215161011 U CN215161011 U CN 215161011U CN 202121779591 U CN202121779591 U CN 202121779591U CN 215161011 U CN215161011 U CN 215161011U
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Abstract
The application discloses a high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid, which comprises hydrogen bromide synthesis equipment and a hydrogen bromide impurity removal device; the hydrogen bromide impurity removal device comprises a drying tower, a first buffer tower and a second buffer tower, wherein a tower cap at the bottom of the drying tower is filled with red phosphorus and glacial acetic acid; the lower section of the drying tower is connected with a hydrogen bromide gas inlet pipeline, one end of the hydrogen bromide gas inlet pipeline is connected with a hydrogen bromide discharge end of a hydrogen bromide gas supply device, the other end of the hydrogen bromide gas inlet pipeline penetrates through the side wall of the drying tower, and the end part of the hydrogen bromide gas inlet pipeline is positioned in red phosphorus filled at the bottom of the drying tower; the drying tower is connected with a glacial acetic acid feeding pipe and a hydrogen bromide gas exhaust pipe, the glacial acetic acid feeding pipe is communicated with the inside of the drying tower, one end of the hydrogen bromide gas exhaust pipe is communicated with the inside of the drying tower, and the other end of the hydrogen bromide gas exhaust pipe is communicated with the inside of the buffer tower. The utility model discloses a improve the synthesis system, reduce the internal bromine simple substance of hydrogen bromide gas, improve the purity of hydrogen bromide.
Description
Technical Field
The utility model relates to a high-purity hydrogen bromide synthesis system for production of hydrobromic acid acetate, which belongs to the field of chemical equipment.
Background
Hydrogen bromide is the basic raw material for the manufacture of various inorganic bromides and certain alkyl bromides (methyl bromide, ethyl bromide). In medicine, used for synthesizing sedative, anesthetic and other medical supplies, in industry, hydrogen bromide is a good solvent for some metal minerals, a separating agent for alkoxy and phenoxypicrin compounds, and a catalyst for oxidizing alicyclic hydrocarbon and chain hydrocarbon into ketone, acid or peroxide; as alkylation catalysts in the petroleum industry; hydrogen bromide is also used in the synthesis of dyes and fragrances. In addition, it is also used as a raw material for analytical reagents and flame retardants. The existing hydrogen bromide gas product contains a certain amount of bromine, and when the hydrogen bromide gas is used as a raw material for a synthesis reaction, the bromine in the hydrogen bromide may influence the quality of a synthesis reaction finished product. The existing bromine compound synthesis system also can be added with a bromine purification process, but the existing bromine compound purification process is to introduce hydrogen bromide into red phosphorus taking water as a carrier, so that the hydrogen bromide can be doped with a large amount of water after impurity removal of bromine, and the purity of the hydrogen bromide gas is influenced. And the existing synthesis system has poor reaction stability, so that the synthesized hydrogen bromide gas has low purity, and even if impurities are removed, the hydrogen bromide gas also contains a large amount of impurities, thereby influencing the purity of the hydrogen bromide finished product.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid, through improving synthesis system, reduce the internal bromine simple substance of hydrogen bromide gas, improve the purity of hydrogen bromide.
The technical proposal adopted by the utility model is that a high-purity hydrogen bromide synthesizing system for producing hydrobromic acid acetate, which comprises hydrogen bromide synthesizing equipment and a hydrogen bromide impurity removing device; the hydrogen bromide impurity removal device comprises a drying tower, a first buffer tower and a second buffer tower, wherein a tower cap at the bottom of the drying tower is filled with red phosphorus and glacial acetic acid; the lower section of the drying tower is connected with a hydrogen bromide gas inlet pipeline, one end of the hydrogen bromide gas inlet pipeline is connected with a hydrogen bromide discharge end of a hydrogen bromide gas supply device, the other end of the hydrogen bromide gas inlet pipeline penetrates through the side wall of the drying tower, and the end part of the hydrogen bromide gas inlet pipeline is positioned in red phosphorus filled at the bottom of the drying tower; the drying tower is connected with a glacial acetic acid feeding pipe and a hydrogen bromide gas exhaust pipe, the glacial acetic acid feeding pipe is communicated with the inside of the drying tower, one end of the hydrogen bromide gas exhaust pipe is communicated with the inside of the drying tower, and the other end of the hydrogen bromide gas exhaust pipe is communicated with the inside of the buffer tower I; the first buffer tower and the second buffer tower are connected in series through pipelines, and the exhaust end of the second buffer tower is connected with a purified gas exhaust pipeline.
Optimized, above-mentioned a high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid, be provided with a plurality of sight glasses on the lateral wall of drying tower, the sight glass sets up along the high extending direction interval of drying tower, and glacial acetic acid's upper end liquid level is located the middle section of the sight glass near drying tower bottom.
Preferably, the high-purity hydrogen bromide synthesis system for producing hydrobromic acid acetate is characterized in that a gas distributor is arranged in the drying tower, and the gas distributor is positioned at the bottom in the drying tower and/or at the middle-upper section in the drying tower.
Preferably, in the high-purity hydrogen bromide synthesis system for producing hydrobromic acid acetate, the hydrogen bromide synthesis equipment comprises a bromine heater, a gas combustion furnace, a bromine supply pipeline and a hydrogen supply pipeline; the bromine supply pipeline is connected with a preheating feed inlet of the bromine heater, a preheating outlet material of the bromine heater is communicated with the inside of the gas combustion furnace through a pipeline, and the hydrogen supply pipeline is communicated with a combustion gas supply port of the gas combustion furnace; the hydrogen bromide gas discharge end of the gas combustion furnace is communicated with a hydrogen bromide gas inlet pipeline.
Preferably, in the high-purity hydrogen bromide synthesis system for producing hydrobromic acid acetate, the bromine heater is a steam preheater and is connected with a steam pipeline; and a bromine metering pump is arranged at the middle section of the bromine supply pipeline.
Optimized, above-mentioned high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid still includes the buffer tank, the hydrogen bromide gas discharge end of gas combustion furnace is connected with the synthetic discharge tube of hydrogen bromide gas, and the one end and the gas combustion furnace intercommunication of the synthetic discharge tube of hydrogen bromide gas, the inlet end of buffer tank is connected to the other end of the synthetic discharge tube of hydrogen bromide gas, and the exhaust end and the hydrogen bromide gas inlet pipeline intercommunication of buffer tank.
Preferably, in the high-purity hydrogen bromide synthesis system for producing hydrobromic acid acetate, the end of the hydrogen bromide gas exhaust pipe extends to the lower section of the inside of the first buffer tower, and the end opening faces the bottom end face of the inside of the first buffer tower.
The application has the advantages that:
among the technical scheme of this application, set up hydrogen bromide edulcoration device at hydrogen bromide equipment's end, the hydrogen bromide gas that contains partial bromine simple substance of output among the hydrogen bromide equipment purifies through the edulcoration of hydrogen bromide edulcoration device, can carry out the edulcoration to the bromine simple substance in the hydrogen bromide and purify, improves the purity of hydrogen bromide.
Among the technical scheme of this application, the hydrogen bromide gas that will contain partial bromine simple substance lets in the inside hypomere of drying tower, red phosphorus through the inside hypomere of drying tower absorbs the bromine simple substance, through glacial acetic acid filling tube to the inside carrier that adds glacial acetic acid as red phosphorus of drying tower, regard glacial acetic acid as the carrier for the use water as the carrier, can reduce the violent reaction that phosphorus tribromide and water produced, make the violent degree of reaction in the drying tower reduce, make the operating stability of whole hydrogen bromide edulcoration device high. And glacial acetic acid is added into the drying tower through a glacial acetic acid feeding pipe, so that the moisture in the drying tower can be reduced, the moisture in the hydrogen bromide gas after purification and impurity removal is reduced, and the purity of the hydrogen bromide gas is ensured.
Among the technical scheme of this application, through glacial acetic acid filling tube to inside glacial acetic acid that adds of drying tower, glacial acetic acid mixes with red phosphorus in the drying tower, the bromine simple substance that lets in produces phosphorus tribromide with red phosphorus, owing to add glacial acetic acid as the carrier, moisture is few in the drying tower, a large amount of phosphorus tribromide react with the internal moisture of hydrogen bromide, get rid of the internal moisture of hydrogen bromide for the internal moisture of hydrogen bromide further reduces, and then guaranteed that hydrogen bromide's purity is higher.
Among the technical scheme of this application, the purifying process in the drying tower can be observed to the sight glass, makes things convenient for operating personnel to operate according to the purifying process. The gas distributor ensures that the hydrogen bromide gas can be distributed more uniformly after being introduced into the drying tower, thereby ensuring the purification effect of the hydrogen bromide gas.
Among the technical scheme of this application, the bromine heater lets in the gas combustion furnace after preheating bromine, and hydrogen supply pipeline lets in the gas combustion furnace from the combustion gas air feed port of gas combustion furnace for hydrogen burns in the bromine atmosphere in the gas combustion furnace, and combustion stability is high and the burning is complete, can the effectual content of reducing the bromine simple substance in the hydrogen bromide finished product. In the improved system, the bromine steam preheated by the bromine heater has high temperature, and the hydrogen is ignited by the high-temperature bromine steam after being introduced into the gas combustion furnace from the combustion gas supply port of the gas combustion furnace, so that ignition equipment can be removed from the gas combustion furnace, and the danger of equipment operation is reduced.
Drawings
FIG. 1 is a schematic diagram of a system connection of a hydrogen bromide impurity removal device according to the present application;
fig. 2 is a schematic diagram of a system connection of the hydrogen bromide synthesis apparatus of the present application.
Detailed Description
The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
As shown in the figure, the utility model relates to a high-purity hydrogen bromide synthesizing system for producing hydrobromic acid acetate, which comprises hydrogen bromide synthesizing equipment and a hydrogen bromide impurity removing device; the hydrogen bromide impurity removal device comprises a drying tower 1, a first buffer tower 2 and a second buffer tower 3, wherein a tower cap at the bottom of the drying tower 1 is filled with red phosphorus 16 and glacial acetic acid 17; the lower section of the drying tower 1 is connected with a hydrogen bromide gas inlet pipeline 5, one end of the hydrogen bromide gas inlet pipeline 5 is connected with a hydrogen bromide discharge end of a hydrogen bromide gas supply device, the other end of the hydrogen bromide gas inlet pipeline 5 penetrates through the side wall of the drying tower 1, and the end part of the hydrogen bromide gas inlet pipeline is positioned in red phosphorus filled at the bottom of the drying tower 1; the drying tower 1 is connected with a glacial acetic acid feeding pipe 6 and a hydrogen bromide gas exhaust pipe 4, the glacial acetic acid feeding pipe 6 is communicated with the inside of the drying tower 1, one end of the hydrogen bromide gas exhaust pipe 4 is communicated with the inside of the drying tower 1, and the other end of the hydrogen bromide gas exhaust pipe 4 is communicated with the inside of the first buffer tower 2; the first buffer tower 2 and the second buffer tower 3 are connected in series through a pipeline, and the exhaust end of the second buffer tower 3 is connected with a purified gas exhaust pipeline 8.
The tail section at hydrogen bromide synthetic equipment has set up hydrogen bromide edulcoration device, and the hydrogen bromide gas that contains part bromine simple substance of output among the hydrogen bromide synthetic equipment is through the edulcoration purification of hydrogen bromide edulcoration device, can carry out the edulcoration to the bromine simple substance in the hydrogen bromide and purify, improves the purity of hydrogen bromide.
The hydrogen bromide gas that will contain partial bromine simple substance lets in the inside hypomere of drying tower 1, the red phosphorus through the inside hypomere of drying tower 1 absorbs the bromine simple substance, through glacial acetic acid filling tube 6 to the inside carrier that adds glacial acetic acid as red phosphorus of adding of drying tower 1 to glacial acetic acid is as the carrier for using water, can reduce the violent reaction that phosphorus tribromide and water produced, make the violent degree of reaction in the drying tower 1 reduce, make the operating stability of whole hydrogen bromide edulcoration device high. And glacial acetic acid is added into the drying tower 1 through the glacial acetic acid feeding pipe 6, so that the moisture in the drying tower 1 can be reduced, the moisture in the hydrogen bromide gas after purification and impurity removal is reduced, and the purity of the hydrogen bromide gas is ensured.
Although a very small amount of glacial acetic acid can be brought into the synthesized hydrogen bromide, the hydrogen bromide synthesized by the hydrogen bromide synthesis system is mainly used as a raw material for synthesizing the acetic acid hydrobromic acid, and the glacial acetic acid brought into the hydrogen bromide can be used as a raw material for synthesizing the subsequent acetic acid hydrobromic acid, so that the subsequent production is not influenced.
Glacial acetic acid is added into the drying tower 1 through a glacial acetic acid feeding pipe 6, glacial acetic acid and red phosphorus are mixed in the drying tower 1, the introduced bromine simple substance and the red phosphorus generate phosphorus tribromide, the glacial acetic acid is added as a carrier, the moisture in the drying tower 1 is very little, a large amount of phosphorus tribromide and the moisture in the hydrogen bromide gas react, the moisture in the hydrogen bromide gas is removed, the moisture in the hydrogen bromide gas is further reduced, and the purity of the hydrogen bromide gas is higher.
Be provided with a plurality of sight glasses 7 on the lateral wall of drying tower 1, sight glass 7 sets up along the high extending direction interval of drying tower 1, and glacial acetic acid's upper end liquid level is located the middle section of the sight glass 7 that is close to drying tower 1 bottom.
The purifying process in the drying tower 1 can be observed by the observation mirror 7, so that an operator can conveniently operate according to the purifying process. And the observation mirror 7 may be set at a suitable position so that the observation mirror 7 can serve as an observation scale for the amount of glacial acetic acid added.
And a gas distributor is arranged in the drying tower 1 and is positioned at the bottom in the drying tower 1. The gas distributor is arranged at the bottom of the drying tower 1, so that the hydrogen bromide gas entering the drying tower 1 is uniformly distributed at the lower section inside the drying tower 1, and the impurity removal uniformity and consistency of the hydrogen bromide gas are ensured.
The hydrogen bromide synthesis device comprises a bromine heater 9, a gas combustion furnace 10, a bromine supply pipeline 11 and a hydrogen supply pipeline 12; the bromine supply pipeline 11 is connected with a preheating feed inlet of the bromine heater 9, a preheating outlet of the bromine heater 9 is communicated with the inside of the gas combustion furnace 10 through a pipeline, and the hydrogen supply pipeline 12 is communicated with a combustion gas supply port of the gas combustion furnace 10; the hydrogen bromide gas discharge end of the gas combustion furnace 10 is communicated with a hydrogen bromide gas inlet pipeline 5.
Bromine is preheated by the bromine heater 9 and then is introduced into the gas combustion furnace 10, and the hydrogen supply pipeline 12 is introduced into the gas combustion furnace 10 from a combustion gas supply port of the gas combustion furnace 10, so that the hydrogen is combusted in the bromine atmosphere in the gas combustion furnace 10, the combustion stability is high, the combustion is complete, and the content of bromine in a hydrogen bromide finished product can be effectively reduced. In the improved system, the bromine steam preheated by the bromine heater 9 has high temperature, hydrogen is ignited by the high-temperature bromine steam after being introduced into the gas combustion furnace 10 from a combustion gas supply port of the gas combustion furnace 10, and the gas combustion furnace 10 can remove ignition equipment, thereby reducing the danger of equipment operation. The bromine heater 9 may use a combination of steam heating and electrical heating to bring the bromine to the desired temperature. In the figure, the position A is the connecting direction of the steam adding pipeline.
The bromine heater 9 is a steam preheater, and the bromine heater 9 is connected with a steam pipeline; and a bromine metering pump 13 is arranged at the middle section of the bromine supply pipeline 11. The bromine added is accurately metered by a bromine metering pump 13, and the reaction time, the speed and the quantity of the introduced hydrogen can be calculated by metering, so that the stability and the completeness of the reaction are ensured, and the generation of bromine is reduced.
The high-purity hydrogen bromide synthesis system for producing the hydrobromic acid acetate further comprises a buffer tank 15, a hydrogen bromide gas discharge end of the gas combustion furnace 10 is connected with a hydrogen bromide gas synthesis discharge pipeline 14, one end of the hydrogen bromide gas synthesis discharge pipeline 14 is communicated with the gas combustion furnace 10, the other end of the hydrogen bromide gas synthesis discharge pipeline 14 is connected with a gas inlet end of the buffer tank 15, and a gas outlet end of the buffer tank 15 is communicated with the hydrogen bromide gas inlet pipeline 5. In the figure, the position B is the connection position with the hydrogen bromide gas inlet pipeline 5.
The end of the hydrogen bromide gas exhaust pipe 4 extends to the inner lower section of the buffer tower one 2, and the end opening faces the inner bottom end face of the buffer tower one 2.
Example 2
This example differs from example 1 in that: and a gas distributor is arranged in the drying tower 1 and is positioned at the bottom in the drying tower 1 and at the middle-upper section in the drying tower 1.
The gas distributor is arranged at the bottom of the drying tower 1, so that the hydrogen bromide gas entering the drying tower 1 is uniformly distributed at the lower section inside the drying tower 1, and the impurity removal uniformity and consistency of the hydrogen bromide gas are ensured.
The gas distributor is arranged at the middle upper section in the drying tower 1, which is beneficial to the subsequent buffering process of gas and ensures the stability of the supply of hydrogen bromide gas to the subsequent reaction.
Based on the above, this embodiment is the best embodiment of the present application.
Example 3
This example differs from examples 1 and 2 in that: and a gas distributor is arranged in the drying tower 1 and is positioned at the middle-upper section in the drying tower 1. The gas distributor is arranged at the middle upper section in the drying tower 1, which is beneficial to the subsequent buffering process of gas and ensures the stability of the supply of hydrogen bromide gas to the subsequent reaction.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also understand that the changes, modifications, additions or substitutions made within the scope of the present invention should belong to the protection scope of the present invention.
Claims (7)
1. A high-purity hydrogen bromide synthesis system for production of hydrobromic acid acetate is characterized in that: comprises hydrogen bromide synthesis equipment and a hydrogen bromide impurity removal device; the hydrogen bromide impurity removal device comprises a drying tower (1), a first buffer tower (2) and a second buffer tower (3), wherein red phosphorus and glacial acetic acid are filled in a tower cap at the bottom of the drying tower (1); the lower section of the drying tower (1) is connected with a hydrogen bromide gas inlet pipeline (5), one end of the hydrogen bromide gas inlet pipeline (5) is connected with a hydrogen bromide discharge end of a hydrogen bromide gas supply device, the other end of the hydrogen bromide gas inlet pipeline (5) penetrates through the side wall of the drying tower (1), and the end part of the hydrogen bromide gas inlet pipeline is positioned in red phosphorus filled at the bottom of the drying tower (1); the drying tower (1) is connected with a glacial acetic acid feeding pipe (6) and a hydrogen bromide gas exhaust pipe (4), the glacial acetic acid feeding pipe (6) is communicated with the inside of the drying tower (1), one end of the hydrogen bromide gas exhaust pipe (4) is communicated with the inside of the drying tower (1), and the other end of the hydrogen bromide gas exhaust pipe (4) is communicated with the inside of the first buffer tower (2); the first buffer tower (2) and the second buffer tower (3) are connected in series through a pipeline, and the exhaust end of the second buffer tower (3) is connected with a purified gas exhaust pipeline (8).
2. The high purity hydrogen bromide synthesis system for hydrobromic acid acetate production according to claim 1, wherein: be provided with a plurality of sight glasses (7) on the lateral wall of drying tower (1), sight glass (7) set up along the high extending direction interval of drying tower (1), and glacial acetic acid's upper end liquid level is located the middle section of sight glass (7) near drying tower (1) bottom.
3. The high purity hydrogen bromide synthesis system for hydrobromic acid acetate production according to claim 1, wherein: the drying tower (1) is internally provided with a gas distributor which is positioned at the bottom in the drying tower (1) and/or at the middle-upper section in the drying tower (1).
4. The high purity hydrogen bromide synthesis system for hydrobromic acid acetate production according to claim 1, wherein: the hydrogen bromide synthesis equipment comprises a bromine heater (9), a gas combustion furnace (10), a bromine supply pipeline (11) and a hydrogen supply pipeline (12); the bromine supply pipeline (11) is connected with a preheating feed inlet of the bromine heater (9), a preheating outlet material of the bromine heater (9) is communicated with the inside of the gas combustion furnace (10) through a pipeline, and the hydrogen supply pipeline (12) is communicated with a combustion gas supply port of the gas combustion furnace (10); the hydrogen bromide gas discharge end of the gas combustion furnace (10) is communicated with a hydrogen bromide gas inlet pipeline (5).
5. The high purity hydrogen bromide synthesis system for hydrobromic acid acetate production according to claim 4, wherein: the bromine heater (9) is a steam preheater, and the bromine heater (9) is connected with a steam pipeline; and a bromine metering pump (13) is arranged at the middle section of the bromine supply pipeline (11).
6. The high purity hydrogen bromide synthesis system for hydrobromic acid acetate production according to claim 4, wherein: the device is characterized by further comprising a buffer tank (15), the hydrogen bromide gas discharge end of the gas combustion furnace (10) is connected with a hydrogen bromide gas synthesis discharge pipeline (14), one end of the hydrogen bromide gas synthesis discharge pipeline (14) is communicated with the gas combustion furnace (10), the other end of the hydrogen bromide gas synthesis discharge pipeline (14) is connected with the gas inlet end of the buffer tank (15), and the gas outlet end of the buffer tank (15) is communicated with the hydrogen bromide gas inlet pipeline (5).
7. The high purity hydrogen bromide synthesis system for hydrobromic acid acetate production according to claim 1, wherein: the end part of the hydrogen bromide gas exhaust pipe (4) extends to the inner lower section of the first buffer tower (2), and the end part opening faces to the inner bottom end face of the first buffer tower (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121779591.9U CN215161011U (en) | 2021-08-02 | 2021-08-02 | A high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121779591.9U CN215161011U (en) | 2021-08-02 | 2021-08-02 | A high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid |
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| CN202121779591.9U Active CN215161011U (en) | 2021-08-02 | 2021-08-02 | A high-purity hydrogen bromide synthesis system for production of acetic acid hydrobromic acid |
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