CN218077922U - Device for removing free chlorine in dilute sulfuric acid and chlorine drying system - Google Patents
Device for removing free chlorine in dilute sulfuric acid and chlorine drying system Download PDFInfo
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- CN218077922U CN218077922U CN202222523030.3U CN202222523030U CN218077922U CN 218077922 U CN218077922 U CN 218077922U CN 202222523030 U CN202222523030 U CN 202222523030U CN 218077922 U CN218077922 U CN 218077922U
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- sulfuric acid
- dilute sulfuric
- storage device
- chlorine
- mixing reactor
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Abstract
The utility model relates to a chlor-alkali technical field particularly, relates to a get rid of device and chlorine drying system of free chlorine in dilute sulfuric acid. The device for removing free chlorine in the dilute sulfuric acid comprises a first dilute sulfuric acid storage device, a mixing reactor, a second dilute sulfuric acid storage device and an alkali liquor absorption device which are connected in sequence; the first dilute sulfuric acid storage device is used for storing dilute sulfuric acid before treatment; the second dilute sulfuric acid storage device is used for storing the treated dilute sulfuric acid; the mixing reactor is also connected with a hydrogen peroxide storage device. The device can effectively remove free chlorine in the dilute sulfuric acid, thereby improving the quality of the dilute sulfuric acid.
Description
Technical Field
The utility model relates to a chlor-alkali technical field particularly, relates to a get rid of device and chlorine drying system of free chlorine in dilute sulfuric acid.
Background
Chlor-alkali, i.e. chlor-alkali industry, refers to the production of NaOH, cl by electrolysis of saturated NaCl solutions 2 And H 2 The method of (1). After the chlorine gas is produced, concentrated sulfuric acid is used, and the chlorine gas is dried by utilizing the water absorption of the concentrated sulfuric acid.
However, the sulfuric acid after drying chlorine absorbs water to generate dilute sulfuric acid, and part of chlorine is entrained and dissolved in the dilute sulfuric acid, so that the quality of the dilute sulfuric acid is affected, the application range is limited, and the dilute sulfuric acid is difficult to treat.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a get rid of device of free chlorine in the dilute sulfuric acid, the device can effectively get rid of free chlorine in the dilute sulfuric acid to the quality and the safety in utilization of dilute sulfuric acid have been improved.
A first object of the present invention is to provide a chlorine drying system.
In order to realize the above purpose of the utility model, the following technical scheme is adopted:
the utility model provides a device for removing free chlorine in dilute sulphuric acid, which comprises a first dilute sulphuric acid storage device, a mixing reactor, a second dilute sulphuric acid storage device and an alkali liquor absorption device which are connected in sequence;
the first dilute sulfuric acid storage device is used for storing dilute sulfuric acid before treatment;
the second dilute sulfuric acid storage device is used for storing the treated dilute sulfuric acid;
the mixing reactor is also connected with a hydrogen peroxide storage device.
In the above technical solution, further, a stirring device is further provided inside the mixing reactor.
In the above technical solution, further, a first valve is disposed between the first dilute sulfuric acid storage device and the mixing reactor.
In the above technical solution, further, a flow meter is further disposed between the first valve and the mixing reactor.
In the above technical solution, further, a metering pump is disposed between the hydrogen peroxide storage device and the mixing reactor.
In the above technical solution, further, a second valve is further disposed between the mixing reactor and the second dilute sulfuric acid storage device.
The utility model also provides a chlorine drying system, which comprises the device for removing the free chlorine in the dilute sulfuric acid and a concentrated sulfuric acid storage device;
wherein, concentrated sulfuric acid storage device is connected with first dilute sulfuric acid storage device.
In the above technical scheme, further, the top of the concentrated sulfuric acid storage device is also provided with a chlorine inlet and a chlorine outlet.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The utility model provides a get rid of device of free chlorine in dilute sulfuric acid can effectively detach free chlorine (chlorine promptly) in the dilute sulfuric acid, is showing the chlorine content that reduces in the dilute sulfuric acid, has promoted the quality of dilute sulfuric acid, has improved the safety in utilization of sulfuric acid.
(2) The utility model provides a get rid of device of free chlorine in dilute sulfuric acid can avoid free chlorine loss to the air in, is favorable to the environmental protection.
(3) The utility model provides a chlorine drying system when realizing that chlorine is dry, can retrieve, recycle the dilute sulfuric acid after the dechlorination.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a device for removing free chlorine from dilute sulfuric acid according to the present invention;
fig. 2 is a schematic structural diagram of the chlorine gas drying system provided by the present invention.
Reference numerals are as follows:
1-a first dilute sulfuric acid storage device; 2-a mixing reactor; 3-a second dilute sulfuric acid storage device; 4-an alkali liquor absorption device; 5-a hydrogen peroxide storage device; 6-a stirring device; 7-a first valve; 8-a flow meter; 9-a metering pump; 10-a second valve; 100-concentrated sulfuric acid storage device; 1001-chlorine inlet; 1002-chlorine gas outlet.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. 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 examples, in which specific conditions are not specified, were carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a get rid of device of free chlorine in dilute sulfuric acid, as shown in figure 1, for the utility model provides a get rid of the structure schematic diagram of device of free chlorine in dilute sulfuric acid. Referring to fig. 1, the device for removing free chlorine in dilute sulfuric acid comprises a first dilute sulfuric acid storage device 1, a mixing reactor 2, a second dilute sulfuric acid storage device 3 and an alkali liquor absorption device 4 which are connected in sequence.
Wherein, the first dilute sulphuric acid storage device 1 is used for storing dilute sulphuric acid before treatment.
The dilute sulfuric acid before treatment refers to a dilute solution of sulfuric acid after drying wet chlorine gas, which contains a part of free chlorine (chlorine gas).
The second dilute sulfuric acid storage device 3 is used for storing the treated dilute sulfuric acid, namely the dilute sulfuric acid from which the free chlorine is removed.
The mixing reactor 2 is also connected with a hydrogen peroxide storage device 5. The hydrogen peroxide storage device 5 is used for storing hydrogen peroxide, and the hydrogen peroxide can be used as an oxidant to oxidize free chlorine (chlorine).
The mixing reactor 2 is used as a container for mixing and reacting materials (dilute sulfuric acid before treatment) in the first dilute sulfuric acid storage device 1 and materials (hydrogen peroxide) in the hydrogen peroxide storage device 5.
The principle of the free chlorine removal device for removing the free chlorine in the dilute sulfuric acid provided by the utility model is as follows:
Cl 2 +H 2 O＝HCl+HClO；
H 2 O 2 +HClO＝HCl+O 2 +H 2 O；
the general reaction formula is as follows: cl 2 +H 2 O 2 ＝2HCl+O 2 。
Namely, after the chlorine in the first dilute sulfuric acid storage device 1 and the hydrogen peroxide in the hydrogen peroxide storage device 5 are conveyed to the mixing reactor 2, an oxidation-reduction reaction is performed in the mixing reactor 2, so that the purpose of removing free chlorine in the dilute sulfuric acid is achieved.
The alkali liquor absorption device 4 is used for absorbing unreacted free chlorine or volatilized free chlorine so as to avoid residual chlorine gas from escaping into the air.
The lye absorption device 4 is used for storing lye, i.e. an aqueous solution containing alkali, such as sodium hydroxide solution, potassium hydroxide solution, calcium hydroxide solution, etc.
The utility model provides a get rid of device of free chlorine in dilute sulfuric acid can effectively desorption free chlorine (chlorine promptly) in the dilute sulfuric acid, is showing the chlorine content that reduces in the dilute sulfuric acid, has promoted the quality of dilute sulfuric acid, has improved sulphuric acid safety in utilization.
In addition, the device can prevent free chlorine from being dissipated into the air, and is favorable for protecting the environment.
Furthermore, the device for removing free chlorine in dilute sulfuric acid provided by the utility model has the advantages of simple structure, continuous production and the like.
In some preferred embodiments of the present invention, as shown in fig. 1, the mixing reactor 2 is further provided with a stirring device 6 inside.
The stirring device 6 is used for uniformly mixing the materials in the mixing reactor 2 and improving the reaction rate.
In some preferred embodiments of the present invention, the stirring device 6 may be any conventional stirring device 6 available by purchase, such as, but not limited to, a frame-type or anchor-type movable stirrer, a propeller type rotational stirrer, a turbine rotary stirrer, etc.
Further, the number of the blades of the stirring device 6 may be any conventional number, such as two blades, three blades, four blades, five blades, or six blades.
Further, the blades of the stirring device 6 may be any conventional blades, such as straight blades, bent blades, folded blades, disk-type straight blades, disk-type bent blades, and the like, but are not limited thereto.
In some preferred embodiments of the present invention, as shown in fig. 1, a first valve 7 is disposed between the first dilute sulfuric acid storage device 1 and the mixing reactor 2.
In some preferred embodiments of the present invention, the first dilute sulfuric acid storage device 1 and the mixing reactor 2 are connected by a pipeline, and the first valve 7 is disposed on the pipeline. The first valve 7 is used for opening and closing a pipeline between the first dilute sulfuric acid storage device 1 and the mixing reactor 2.
The flow of material in the first dilute sulphuric acid storage 1 can be controlled by setting the first valve 7.
In some preferred embodiments of the present invention, as shown in fig. 1, a flow meter 8 is further disposed between the first valve 7 and the mixing reactor 2.
The flow meter 8 is: meters that indicate the measured flow and/or the total amount of fluid in a selected time interval, i.e., a meter that measures the flow of fluid in a pipeline.
The flow rate of the material in the first dilute sulfuric acid storage device 1 can be obtained by setting the flow meter 8.
In some preferred embodiments of the present invention, the flow meter 8 may be any, conventional, and commercially available flow meter 8, such as a differential pressure flow meter, a rotor flow meter, a throttling flow meter, a slit flow meter, a volumetric flow meter, an electromagnetic flow meter, an ultrasonic flow meter, and the like, but is not limited thereto.
Since the first dilute sulfuric acid storage device 1 is used for storing the dilute sulfuric acid before treatment and has a large flow rate, it is more suitable to control the flow rate of the dilute sulfuric acid before treatment by using a valve and a flow meter 8.
In some preferred embodiments of the present invention, as shown in fig. 1, a metering pump 9 is disposed between the hydrogen peroxide storage device 5 and the mixing reactor 2.
In some preferred embodiments of the present invention, the hydrogen peroxide storage device 5 and the mixing reactor 2 are connected by a pipeline, and the metering pump 9 is disposed on the pipeline.
The metering pump 9 is also called a quantitative pump or a proportional pump, and is a volumetric pump which can meet various strict process flow requirements, can adjust the flow in a stepless manner within the range of 0-100% and is used for conveying liquid.
In some preferred embodiments of the present invention, the metering pump 9 may be any conventional metering pump 9 available by purchase, such as, but not limited to, a plunger type metering pump, a mechanical diaphragm type metering pump, a hydraulic diaphragm type metering pump, a bellows type metering pump, etc.
Because the hydrogen peroxide storage device 5 is used for storing hydrogen peroxide, and compared with dilute sulfuric acid before treatment, the flow of hydrogen peroxide is smaller, a metering pump 9 is preferably arranged between the hydrogen peroxide storage device 5 and the mixing reactor 2.
In some preferred embodiments of the present invention, as shown in fig. 1, a second valve 10 is further disposed between the mixing reactor 2 and the second dilute sulfuric acid storage device 3.
In some preferred embodiments of the present invention, the mixing reactor 2 and the second dilute sulfuric acid storage device 3 are connected by a pipeline, and the second valve 10 is disposed on the pipeline.
The second valve 10 is used to control the flow of material within the mixing reactor 2.
In some preferred embodiments of the present invention, the second dilute sulfuric acid storage device 3 and the lye absorption device 4 are connected by a pipeline. Further, a gas outlet is formed in the top end of the second dilute sulfuric acid storage device 3, and gas in the second dilute sulfuric acid storage device 3 escapes from the gas outlet into a pipeline and further escapes into the alkali liquor absorption device 4. The main component of the gas in the second dilute sulfuric acid storage device 3 is oxygen, and a part of residual chlorine gas is also contained, the residual chlorine gas can be absorbed by the alkali liquor in the alkali liquor absorption device 4, and the oxygen gas is discharged to the atmosphere.
The utility model also provides a chlorine drying system, as shown in figure 2, for the utility model provides a chlorine drying system's schematic structure diagram. Referring to fig. 2, the chlorine gas drying system includes the device for removing free chlorine in dilute sulfuric acid as described above, and a concentrated sulfuric acid storage device 100;
wherein, the concentrated sulfuric acid storage device 100 is connected with the first dilute sulfuric acid storage device 1.
The chlorine drying system can recover the dilute sulfuric acid after chlorine removal while drying chlorine, and realizes the reutilization of waste liquid.
In some preferred embodiments of the present invention, as shown in fig. 2, the top of the concentrated sulfuric acid storage device 100 is further provided with a chlorine inlet 1001 and a chlorine outlet 1002.
Wherein, the chlorine inlet 1001 is used for introducing wet chlorine.
The chlorine outlet 1002 is used for outputting the dried chlorine.
The concentrated sulfuric acid has water absorbability, and after wet chlorine gas is introduced into the concentrated sulfuric acid storage device 100 provided with the concentrated sulfuric acid, the concentrated sulfuric acid can absorb water in the wet chlorine gas, and then the dried chlorine gas is discharged.
While particular embodiments of the present invention have been illustrated and described, it will be appreciated that the above embodiments are merely illustrative of the technical solution of the present invention and are not restrictive; those of ordinary skill in the art will understand that: modifications may be made to the technical solutions described in the foregoing embodiments, or some or all of the technical features may be equivalently replaced without departing from the spirit and scope of the present invention; the modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; it is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (8)
1. A device for removing free chlorine in dilute sulfuric acid is characterized by comprising a first dilute sulfuric acid storage device, a mixing reactor, a second dilute sulfuric acid storage device and an alkali liquor absorption device which are sequentially connected;
wherein, the first dilute sulphuric acid storage device is used for storing dilute sulphuric acid before treatment;
the second dilute sulfuric acid storage device is used for storing the treated dilute sulfuric acid;
the mixing reactor is also connected with a hydrogen peroxide storage device.
2. The apparatus for removing free chlorine from dilute sulfuric acid according to claim 1, wherein an agitating device is further disposed inside the mixing reactor.
3. The apparatus for removing free chlorine from dilute sulfuric acid according to claim 1, wherein a first valve is disposed between the first dilute sulfuric acid storage device and the mixing reactor.
4. The apparatus as claimed in claim 3, wherein a flow meter is disposed between the first valve and the mixing reactor.
5. The device for removing free chlorine from dilute sulfuric acid according to claim 1, wherein a metering pump is disposed between the hydrogen peroxide storage device and the mixing reactor.
6. The apparatus as claimed in claim 1, wherein a second valve is disposed between the mixing reactor and the second dilute sulfuric acid storage device.
7. A chlorine gas drying system, comprising the apparatus for removing free chlorine in dilute sulfuric acid according to any one of claims 1 to 6, and a concentrated sulfuric acid storage apparatus;
wherein, concentrated sulfuric acid storage device is connected with first dilute sulfuric acid storage device.
8. The chlorine drying system of claim 7, wherein the top of the concentrated sulfuric acid storage device is further provided with a chlorine inlet and a chlorine outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222523030.3U CN218077922U (en) | 2022-09-22 | 2022-09-22 | Device for removing free chlorine in dilute sulfuric acid and chlorine drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222523030.3U CN218077922U (en) | 2022-09-22 | 2022-09-22 | Device for removing free chlorine in dilute sulfuric acid and chlorine drying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218077922U true CN218077922U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222523030.3U Active CN218077922U (en) | 2022-09-22 | 2022-09-22 | Device for removing free chlorine in dilute sulfuric acid and chlorine drying system |
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| Country | Link |
|---|---|
| CN (1) | CN218077922U (en) |
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- 2022-09-22 CN CN202222523030.3U patent/CN218077922U/en active Active
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