CN210944859U - Hydrochloric acid desorption device - Google Patents
Hydrochloric acid desorption device Download PDFInfo
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- CN210944859U CN210944859U CN201922146027.2U CN201922146027U CN210944859U CN 210944859 U CN210944859 U CN 210944859U CN 201922146027 U CN201922146027 U CN 201922146027U CN 210944859 U CN210944859 U CN 210944859U
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- hydrochloric acid
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- concentrated sulfuric
- hydrogen chloride
- sulfuric acid
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Abstract
The utility model discloses a hydrochloric acid desorption device, it relates to chemical industry equipment technical field. The device specifically comprises a reaction kettle, a concentrated sulfuric acid storage tank, a hydrochloric acid storage tank and a hydrogen chloride gas storage tank; a concentrated sulfuric acid inlet and a hydrochloric acid inlet are symmetrically formed in two sides of the upper end of the reaction kettle, the concentrated sulfuric acid inlet is communicated with a concentrated sulfuric acid storage tank through a concentrated sulfuric acid conveying pipe, and the hydrochloric acid inlet is communicated with a hydrochloric acid storage tank through a hydrochloric acid conveying pipe; the top end of the reaction kettle is provided with an exhaust port which is communicated with a hydrogen chloride gas storage tank through a hydrogen chloride gas conveying pipe. The utility model discloses fully contact concentrated sulfuric acid and hydrochloric acid, make the hydrogen chloride gas volatilize, utilize the dry hydrogen chloride gas that volatilizees of strong dehydration nature of concentrated sulfuric acid, realized the desorption of hydrochloric acid.
Description
Technical Field
The utility model belongs to the technical field of chemical industry equipment, concretely relates to hydrochloric acid desorption device.
Background
At present, there are three main ways for industrially obtaining hydrogen chloride gas: the method adopts the mode of electrolyzing salt water to obtain chlorine and hydrogen for synthesis, and has more matched equipment, higher investment cost and low purity of the obtained hydrogen chloride; (II) the hydrogen chloride gas is obtained by the conventional hydrochloric acid desorption process, and the method has the advantages of complex required process flow and high requirement on temperature control; and (III) the chlorine and the hydrogen are directly used for synthesizing the hydrogen chloride gas, the gas purity can meet the requirement, but the cost of matched equipment is higher, and the total cost investment of the equipment is higher.
The process uses concentrated sulfuric acid to desorb industrial hydrochloric acid to obtain high-purity hydrogen chloride gas, the purity of the hydrogen chloride gas generated by the method can be ensured, and the hydrogen chloride gas can be directly used without further drying to remove water.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the utility model provides a hydrochloric acid desorption device.
In order to achieve the purpose, the hydrochloric acid desorption device comprises a reaction kettle, a concentrated sulfuric acid storage tank, a hydrochloric acid storage tank, a gas storage tank and a mixed acid storage tank; the two symmetrical sides of the reaction kettle are respectively provided with a concentrated sulfuric acid inlet and a hydrochloric acid inlet, the concentrated sulfuric acid inlet is communicated with the concentrated sulfuric acid storage tank through a concentrated sulfuric acid conveying pipe, and the hydrochloric acid inlet is communicated with the hydrochloric acid storage tank through a hydrochloric acid conveying pipe; the top of the reaction kettle is communicated with the hydrogen chloride gas storage tank through a hydrogen chloride gas conveying pipe, and the bottom of the reaction kettle is communicated with the mixed acid storage tank through a mixed acid conveying pipe.
Further, a cooling tank is sleeved on the periphery of the reaction kettle, a water outlet is formed in the upper end of the cooling tank, a water inlet is formed in the lower end of the cooling tank, the water outlet is communicated with the water inlet through a water circulating pipe, and a first heat exchanger is arranged on the water circulating pipe.
Furthermore, an automatic pneumatic valve is arranged on the hydrogen chloride gas conveying pipe.
Furthermore, a second heat exchanger is arranged on the hydrogen chloride gas conveying pipe and between the automatic pneumatic valve and the hydrogen chloride gas storage tank, and the second heat exchanger is communicated with the hydrochloric acid storage tank through a hydrochloric acid return pipe.
Furthermore, an automatic liquid outlet valve is arranged on the mixed acid delivery pipe.
Further, a concentrated sulfuric acid delivery pump is arranged on the concentrated sulfuric acid delivery pipe.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model provides a hydrochloric acid desorption device, which is a process for desorbing hydrochloric acid by concentrated sulfuric acid to generate dry hydrogen chloride gas, wherein the concentrated sulfuric acid is fully contacted with the hydrochloric acid to volatilize the hydrogen chloride gas, and the desorption of the hydrochloric acid is realized by utilizing the strong dehydration property of the concentrated sulfuric acid to dry the volatilized hydrogen chloride gas;
the utility model discloses an utilize concentrated sulfuric acid to have strong dehydration nature, concentrated hydrochloric acid has volatility, can emit a large amount of heats and white fog when two kinds of sour contacts, the white fog principal ingredients is hydrogen chloride gas and water, can emit a large amount of heats when concentrated sulfuric acid and moisture contact, the heat is volatile hydrochloric acid with higher speed, and the outside comdenstion water of reactor can make the moisture cooling in the reation kettle subside with concentrated sulfuric acid contact, hydrogen chloride gas upwards volatilizes, in certain reaction time, hydrogen chloride gas can be continuous upwards volatilizees, and concentrated sulfuric acid can subside to the reactor bottom with moisture, until putting into the dilute sulfuric acid storage tank after the reaction is complete.
The utility model provides a hydrochloric acid desorption process flow is simple, and suitable most mill's process technology reforms transform, and the hydrogen chloride gas purity of preparing simultaneously is high, with low costs, and the next process of being convenient for is used.
Drawings
FIG. 1 is a schematic structural view of a hydrochloric acid desorption apparatus in the example.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
It should be noted that the circuit connection of the motor in the present invention adopts a conventional circuit connection manner, and does not involve any innovation.
A hydrochloric acid desorption device, as shown in fig. 1, comprising a reaction kettle 2, a concentrated sulfuric acid storage tank 1, a hydrochloric acid storage tank 6, a gas storage tank 5 and a mixed acid storage tank 7; the two symmetrical sides of the upper end of the reaction kettle 2 are respectively provided with a concentrated sulfuric acid inlet 201 and a hydrochloric acid inlet 202, the concentrated sulfuric acid and the hydrochloric acid can be completely contacted and reacted, the concentrated sulfuric acid inlet 201 is communicated with a concentrated sulfuric acid storage tank 1 through a concentrated sulfuric acid conveying pipe 101, in order to further continuously supply the concentrated sulfuric acid to the reaction kettle 2, a concentrated sulfuric acid conveying pump 102 is arranged on the concentrated sulfuric acid conveying pipe 101, the concentrated sulfuric acid conveyed to the reaction kettle 2 is applied with certain pressure to be fully contacted with the hydrochloric acid, the hydrochloric acid inlet 202 is communicated with a hydrochloric acid storage tank 6 through a hydrochloric acid conveying pipe 601, the hydrochloric acid is conveyed into the reaction kettle 2 from the hydrochloric acid inlet 202 through potential difference to react with the concentrated sulfuric acid, and the hydrogen chloride gas volatilized by;
the gas vent has been seted up through reation kettle 2 top, and the gas vent passes through hydrogen chloride gas conveyer pipe 4 and hydrogen chloride gas storage tank 5 intercommunication, carries hydrogen chloride gas to hydrogen chloride gas storage tank 5 through hydrogen chloride gas conveyer pipe 4, simultaneously, is equipped with automatic pneumatic valve 401 on hydrogen chloride gas conveyer pipe 4, can adjust the direction that the gas was carried to reverse letting in reation kettle of avoiding. Therefore, the concentrated sulfuric acid from the concentrated sulfuric acid inlet is in convection contact with the hydrochloric acid from the hydrochloric acid inlet to volatilize the hydrogen chloride gas, and an exhaust port is formed in the top end of the reaction kettle and is exhausted into a hydrogen chloride gas storage tank through a hydrogen chloride gas conveying pipe for use in the next procedure.
Through 2 peripheral covers at reation kettle 2 being equipped with cooling tank 3, the outlet has been seted up to cooling tank 3 upper end, and the water inlet has been seted up to the lower extreme, and the outlet passes through water circulating pipe 301 intercommunication with the water inlet, is equipped with first heat exchanger 302 on the water circulating pipe 301, for this reason, can emit a large amount of heats when concentrated sulfuric acid and moisture contact, through the cooling tank, the effectual surface temperature who reduces reation kettle ensures reation kettle internal reaction's stability and security. Wherein, hydrogen chloride gas that the sharp inflation of heat in the reation kettle made upwards volatilizees, in certain reaction time, hydrogen chloride gas can be continuous upwards volatilizees, and the outside cooling tank of reactor can make moisture cooling and concentrated sulfuric acid contact subside, concentrated sulfuric acid can subside to the reactor bottom with moisture, through being connected with mixed acid conveyer pipe 203 in reation kettle 2 bottom, mixed acid conveyer pipe 203 one end and reation kettle 2 intercommunication, mixed acid conveyer pipe 203 other end intercommunication has mixed acid storage tank 7, be equipped with automatic play liquid valve 204 on the mixed acid conveyer pipe 203, for this reason, through automatic play liquid valve 204 control, dilute sulfuric acid after accomplishing the reaction lets in mixed acid through being connected with mixed acid conveyer pipe of reation kettle bottom, can carry in sulphuric acid concentration collecting tank process, can continue to be regarded as the utility model discloses used concentrated sulfuric acid.
In order to reduce the temperature of the discharged hydrogen chloride gas, a second heat exchanger 402 is connected between the automatic pneumatic valve 401 and the gas storage tank 5 on the hydrogen chloride gas conveying pipe 4, in the process of heat exchange, part of the hydrogen chloride gas and water vapor are condensed into hydrogen chloride liquid by the second heat exchanger 402, and the hydrogen chloride solution is conveyed into the hydrochloric acid storage tank 6 through a hydrochloric acid return pipe 403. Therefore, part of hydrogen chloride gas is carried out by moisture through the second heat exchanger to form hydrochloric acid, and the hydrochloric acid is introduced into the hydrochloric acid storage tank through the hydrochloric acid return pipe to be continuously desorbed.
The utility model discloses inside reacting at reation kettle, the concentrated sulfuric acid that comes out through the concentrated sulfuric acid import makes hydrogen chloride gas volatilize with the hydrochloric acid convection current contact that the hydrochloric acid import came out, is equipped with hydrogen chloride gas outlet at the reation kettle top, discharges through automatic pneumatic valve to send to next process after the heat exchanger and use, realized the desorption of hydrochloric acid. In addition, partial hydrogen chloride gas is carried out by moisture through the heat exchanger to form hydrochloric acid, the hydrochloric acid enters a hydrochloric acid storage tank, the hydrochloric acid is sent back to a hydrochloric acid inlet by utilizing a potential difference to further contact concentrated sulfuric acid, and the mixed acid is placed in a mixed acid collecting tank through an automatic liquid outlet valve by the sulfuric acid after the reaction is finished under a reaction kettle.
The above disclosure is only for the specific embodiments of the present invention, however, the embodiments of the present invention are not limited thereto, and any changes that can be considered by those skilled in the art should fall into the protection scope of the present invention.
Claims (6)
1. A hydrochloric acid desorption device is characterized in that: comprises a reaction kettle (2), a concentrated sulfuric acid storage tank (1), a hydrochloric acid storage tank (6), a gas storage tank (5) and a mixed acid storage tank (7); the reaction kettle (2) is symmetrically provided with a concentrated sulfuric acid inlet (201) and a hydrochloric acid inlet (202) at two sides respectively, the concentrated sulfuric acid inlet (201) is communicated with the concentrated sulfuric acid storage tank (1) through a concentrated sulfuric acid conveying pipe (101), and the hydrochloric acid inlet (202) is communicated with the hydrochloric acid storage tank (6) through a hydrochloric acid conveying pipe (601); the top of the reaction kettle (2) is communicated with the hydrogen chloride gas storage tank (5) through a hydrogen chloride gas conveying pipe (4), and the bottom of the reaction kettle (2) is communicated with the mixed acid storage tank (7) through a mixed acid conveying pipe (203).
2. The hydrochloric acid desorption apparatus as defined in claim 1, wherein: the peripheral cover of reation kettle (2) is equipped with cooling tank (3), the outlet has been seted up to cooling tank (3) upper end, and the water inlet has been seted up to the lower extreme, the outlet with the water inlet passes through water circulating pipe (301) intercommunication, be equipped with first heat exchanger (302) on water circulating pipe (301).
3. The hydrochloric acid desorption apparatus as defined in claim 1, wherein: and an automatic pneumatic valve (401) is arranged on the hydrogen chloride gas conveying pipe (4).
4. The hydrochloric acid desorption apparatus as set forth in claim 3, wherein: and a second heat exchanger (402) is arranged on the hydrogen chloride gas conveying pipe (4) and between the automatic pneumatic valve (401) and the hydrogen chloride gas storage tank (5), and the second heat exchanger (402) is communicated with the hydrochloric acid storage tank (6) through a hydrochloric acid return pipe (403).
5. The hydrochloric acid desorption apparatus as defined in claim 1, wherein: an automatic liquid outlet valve (204) is arranged on the mixed acid delivery pipe (203).
6. The hydrochloric acid desorption apparatus as defined in claim 1, wherein: and a concentrated sulfuric acid delivery pump (102) is arranged on the concentrated sulfuric acid delivery pipe (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922146027.2U CN210944859U (en) | 2019-12-04 | 2019-12-04 | Hydrochloric acid desorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922146027.2U CN210944859U (en) | 2019-12-04 | 2019-12-04 | Hydrochloric acid desorption device |
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| Publication Number | Publication Date |
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| CN210944859U true CN210944859U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922146027.2U Active CN210944859U (en) | 2019-12-04 | 2019-12-04 | Hydrochloric acid desorption device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797723A (en) * | 2022-04-19 | 2022-07-29 | 中煤陕西榆林能源化工有限公司 | Mixed crystal salt reduction device and method |
| CN115849306A (en) * | 2022-12-06 | 2023-03-28 | 建滔（衡阳）实业有限公司 | Hydrochloric acid desorption equipment capable of efficiently and continuously recovering |
-
2019
- 2019-12-04 CN CN201922146027.2U patent/CN210944859U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797723A (en) * | 2022-04-19 | 2022-07-29 | 中煤陕西榆林能源化工有限公司 | Mixed crystal salt reduction device and method |
| CN115849306A (en) * | 2022-12-06 | 2023-03-28 | 建滔（衡阳）实业有限公司 | Hydrochloric acid desorption equipment capable of efficiently and continuously recovering |
| CN115849306B (en) * | 2022-12-06 | 2024-05-10 | 建滔（衡阳）实业有限公司 | Continuously recovered hydrochloric acid desorption equipment |
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