CN210473534U - Processing apparatus of acid waste gas that concentrated sulfuric acid decomposes rare earth concentrate and produces - Google Patents
Processing apparatus of acid waste gas that concentrated sulfuric acid decomposes rare earth concentrate and produces Download PDFInfo
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- CN210473534U CN210473534U CN201921189374.7U CN201921189374U CN210473534U CN 210473534 U CN210473534 U CN 210473534U CN 201921189374 U CN201921189374 U CN 201921189374U CN 210473534 U CN210473534 U CN 210473534U
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Abstract
The utility model discloses a processing device for acidic waste gas generated by decomposing rare earth concentrate with concentrated sulfuric acid, which comprises a spray tower, wherein an air inlet of the acidic waste gas is arranged below the left side surface of the spray tower, the air inlet is communicated with an air inlet cavity in the spray tower, a packing layer is arranged above the air inlet cavity, a spray device is arranged above the packing layer, a demisting plate is arranged above the spray device, and the top of the spray tower is an air outlet; a waste liquid pool communicated with the lower part of the air inlet cavity; the side spraying device is arranged on the inner side wall of the air inlet cavity and sprays the entering acidic waste gas; when the acidic waste gas enters the spray tower, the acidic waste gas can be sprayed and absorbed; the contact reaction time of the spraying agent and the acidic waste gas is longer, and the acidic waste gas can be fully reacted and absorbed.
Description
Technical Field
The utility model relates to a concentrated sulfuric acid decomposes the treatment of the produced acid waste gas of rare earth concentrate, belongs to environmental protection technical field, in particular to concentrated sulfuric acid decomposes processing apparatus of the acid waste gas that rare earth concentrate produced.
Background
In the production process of decomposing rare earth concentrate by concentrated sulfuric acid, a large amount of acid waste gas is generated, the environmental pollution is large, the components are complex, the treatment difficulty is large, and the main components of the rare earth concentrate are hydrogen fluoride, sulfuric acid mist, sulfur dioxide and the like; one of the existing treatment methods is to introduce the generated acidic waste gas into a spray tower for conversion and absorption so that the discharged waste gas reaches the national emission standard; the principle of treating the acidic waste gas by utilizing the spray tower is basically the same, as shown in figure 1, the acidic waste gas is a schematic diagram of the structure of the existing spray tower, and the acidic waste gas is pressed into or sucked into the spray tower, then flows upwards to the packing layer and is fully contacted and reacted with the spray agent sprayed from the upper part; after being purified, the acid mist waste gas is dehydrated and demisted by a demisting plate and then is discharged into the atmosphere; the spraying agent is sprayed by alkaline solution, and acidic substances are converted into salts for recycling; the spraying agent used in the prior art mainly comprises two types of sodium hydroxide and lime; the existing spraying agent is only sprayed downwards from the upper part, and the acid waste gas can react with the packing layer when flowing upwards to the packing layer, so that the reaction time is insufficient, and the acid waste gas can not be fully absorbed; therefore, the inventor improves the existing spray tower, and adds a spraying device on the side wall of the bottom in the spray tower, so that the acidic waste gas can be sprayed and absorbed when entering the spray tower.
Disclosure of Invention
An object of the utility model is to provide a processing apparatus of acid waste gas that concentrated sulfuric acid decomposes tombarthite concentrate and produces solves the time that sprays agent and acid waste gas reaction and is sufficient inadequately, and acid waste gas can not fully absorb the problem.
The utility model adopts the technical scheme as follows: a treatment device for acidic waste gas generated by decomposing rare earth concentrate by concentrated sulfuric acid comprises a spray tower, wherein an acidic waste gas inlet is arranged below the left side surface of the spray tower, the gas inlet is communicated with a gas inlet cavity in the spray tower, a packing layer is arranged above the gas inlet cavity, a spray device is arranged above the packing layer, a demisting plate is arranged above the spray device, and an exhaust port is arranged at the top of the spray tower; a waste liquid pool communicated with the lower part of the air inlet cavity; the method is characterized in that: the side direction spray set is still set up to the intracavity lateral wall that admits air, sprays to the acid waste gas that gets into through side direction spray set.
Furthermore, the lateral spraying device comprises a spraying head fixed on the side wall of the spraying tower, the water inlet end of the spraying head is connected with a delivery pump, the delivery pump is connected with a spraying agent tank through a delivery pipeline, spraying agents are stored in the spraying agent tank, and the delivery pump delivers the spraying agents in the spraying agent tank to the spraying head and sprays out from the spray holes of the spraying head.
Furthermore, the spray headers are arranged in a plurality of distributed around the inner side wall of the air inlet cavity.
Furthermore, the spray header is arranged obliquely upwards and sprays the spray agent obliquely upwards.
Further, the spraying agent tank is a circular truncated cone tank with a large upper end and a gradually reduced lower end, a motor is arranged in the center of the top surface of the spraying agent tank, a rotating shaft extending downwards into the spraying agent tank is arranged on a driving shaft of the motor, and a helical blade is arranged on the rotating shaft; the top surface of the spraying agent tank is also provided with a feed inlet and a slag discharge port.
Furthermore, the delivery pipeline is also provided with a flow control valve and a liquid flowmeter.
Further, a liquid level meter is also arranged in the spraying agent tank.
The beneficial effects of the utility model reside in that: the utility model improves the existing spray tower, adds a spray device on the side wall of the bottom in the spray tower, and can spray and absorb the acidic waste gas when the acidic waste gas enters the spray tower; the contact reaction time of the spraying agent and the acidic waste gas is longer, and the acidic waste gas can be fully reacted and absorbed.
Drawings
Fig. 1 is a schematic diagram of a conventional spray tower structure.
Fig. 2 is a schematic structural diagram of the present invention.
In the figure: spray column 1, air inlet 2, air inlet chamber 3, packing layer 4, spray set 5, defogging board 6, gas vent 7, waste liquid pond 8, shower head 9, delivery pump 10, pipeline 11, spray agent jar 12, motor 13, pivot 14, helical blade 15, charge door 16, row's cinder notch 17, flow control valve 18, liquid flowmeter 19, level gauge 20.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings, which are only used for illustrating the technical solutions of the present invention and are not limited.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to 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; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 2, a device for treating acidic waste gas generated by decomposing rare earth concentrate with concentrated sulfuric acid comprises a spray tower 1, wherein an acid waste gas inlet 2 is arranged below the left side surface of the spray tower 1, the gas inlet 2 is communicated with a gas inlet cavity 3 in the spray tower 1, a packing layer 4 is arranged above the gas inlet cavity 3, a spray device 5 is arranged above the packing layer 4, a demisting plate 6 is arranged above the spray device 5, and an exhaust port 7 is arranged at the top of the spray tower 1; a waste liquid pool 8 communicated with the lower part of the air inlet cavity 3; the side direction spray set is still set up to the 3 inside walls in chamber of admitting air, sprays to the acid waste gas that gets into through side direction spray set.
Specifically, the lateral spray device 5 comprises a spray header 9 fixed on the side wall of the spray tower 1, the water inlet end of the spray header 9 is connected with a delivery pump 10, the delivery pump 10 is connected with a spray agent tank 12 through a delivery pipeline 11, spray agent is stored in the spray agent tank 12, and the delivery pump 10 delivers the spray agent in the spray agent tank 12 to the spray header 9 and sprays out from the spray holes of the spray header 9; when the acid waste gas enters the spray tower 1, the acid waste gas can be sprayed and absorbed; the contact reaction time of the spraying agent and the acidic waste gas is longer, and the acidic waste gas can be fully reacted and absorbed.
Furthermore, a plurality of spray headers 9 are arranged and dispersed around the inner side wall of the air inlet cavity 3; spraying is carried out simultaneously from a plurality of directions, and the efficiency of reaction absorption is higher.
Further, the spray header 9 is arranged obliquely upward and sprays the spray agent obliquely upward; the sprayed spraying agent falls in a parabola shape, stays in the air inlet cavity 3 for a longer time, and is in contact with the acidic waste gas for a longer reaction time.
Further, the spraying agent tank 12 is a circular truncated cone tank with a large upper end and a gradually reduced lower end, a motor 13 is installed in the center of the top surface of the spraying agent tank 12, a rotating shaft 14 extending downwards into the spraying agent tank is installed on a driving shaft of the motor 13, and a helical blade 15 is installed on the rotating shaft 14; the top surface of the spraying agent tank 12 is also provided with a feed inlet 16 and a slag discharge port 17; the spraying agent tank 12 is used for rapidly and continuously providing spraying agents, and the spraying agents are uniformly mixed by vertically stirring the helical blades 15, so that the spraying effect is ensured; the feed inlet 16 is used for adding reaction raw materials, and the slag discharge outlet 17 is used for cleaning the spraying agent tank 12.
Further, the above-mentioned delivery pipe 11 is also provided with a flow control valve 18 and a liquid flow meter 19 for controlling and adjusting the delivery amount of the spraying agent.
Further, a liquid level meter 20 is arranged in the spraying agent tank 12 for monitoring the liquid level height in the spraying agent tank.
Although the present invention has been described in detail with reference to the foregoing description, it will be apparent to those skilled in the art that various changes, modifications, and equivalents may be made without departing from the spirit and scope of the invention.
Claims (7)
1. A treatment device for acidic waste gas generated by decomposing rare earth concentrate by concentrated sulfuric acid comprises a spray tower, wherein an acidic waste gas inlet is arranged below the left side surface of the spray tower, the gas inlet is communicated with a gas inlet cavity in the spray tower, a packing layer is arranged above the gas inlet cavity, a spray device is arranged above the packing layer, a demisting plate is arranged above the spray device, and an exhaust port is arranged at the top of the spray tower; a waste liquid pool communicated with the lower part of the air inlet cavity; the method is characterized in that: the side direction spray set is still set up to the intracavity lateral wall that admits air, sprays to the acid waste gas that gets into through side direction spray set.
2. The apparatus of claim 1, wherein the apparatus for treating acidic waste gas generated by concentrated sulfuric acid decomposition of rare earth concentrate comprises: the lateral spraying device comprises a spraying head fixed on the side wall of the spraying tower, the water inlet end of the spraying head is connected with a delivery pump, the delivery pump is connected with a spraying agent tank through a delivery pipeline, spraying agents are stored in the spraying agent tank, and the delivery pump delivers the spraying agents in the spraying agent tank to the spraying head and sprays out from the spray holes of the spraying head.
3. The apparatus of claim 2, wherein the apparatus for treating acidic waste gas generated by concentrated sulfuric acid decomposition of rare earth concentrate comprises: the shower head set up a plurality ofly, the dispersion is around the chamber inside wall that admits air.
4. The apparatus for treating acidic waste gas generated by concentrated sulfuric acid decomposition of rare earth concentrate according to claim 2 or 3, wherein: the spray header is arranged obliquely upwards and sprays the spray agent obliquely upwards.
5. The apparatus of claim 2, wherein the apparatus for treating acidic waste gas generated by concentrated sulfuric acid decomposition of rare earth concentrate comprises: the spraying agent tank is a circular truncated cone tank with a large upper end and a gradually reduced lower end, a motor is arranged in the center of the top surface of the spraying agent tank, a rotating shaft which extends downwards into the spraying agent tank is arranged on a driving shaft of the motor, and a helical blade is arranged on the rotating shaft; the top surface of the spraying agent tank is also provided with a feed inlet and a slag discharge port.
6. The apparatus of claim 2, wherein the apparatus for treating acidic waste gas generated by concentrated sulfuric acid decomposition of rare earth concentrate comprises: the conveying pipeline is also provided with a flow control valve and a liquid flowmeter.
7. The apparatus of claim 2, wherein the apparatus for treating acidic waste gas generated by concentrated sulfuric acid decomposition of rare earth concentrate comprises: a liquid level meter is also arranged in the spraying agent tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921189374.7U CN210473534U (en) | 2019-07-26 | 2019-07-26 | Processing apparatus of acid waste gas that concentrated sulfuric acid decomposes rare earth concentrate and produces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921189374.7U CN210473534U (en) | 2019-07-26 | 2019-07-26 | Processing apparatus of acid waste gas that concentrated sulfuric acid decomposes rare earth concentrate and produces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210473534U true CN210473534U (en) | 2020-05-08 |
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ID=70532907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921189374.7U Active CN210473534U (en) | 2019-07-26 | 2019-07-26 | Processing apparatus of acid waste gas that concentrated sulfuric acid decomposes rare earth concentrate and produces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210473534U (en) |
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2019
- 2019-07-26 CN CN201921189374.7U patent/CN210473534U/en active Active
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