CN215463139U - Tail gas recovery device - Google Patents
Tail gas recovery device Download PDFInfo
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- CN215463139U CN215463139U CN202121228643.3U CN202121228643U CN215463139U CN 215463139 U CN215463139 U CN 215463139U CN 202121228643 U CN202121228643 U CN 202121228643U CN 215463139 U CN215463139 U CN 215463139U
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Abstract
The utility model discloses a tail gas recovery device, which relates to the technical field of environmental protection recovery and comprises a first synthesis tank, a second synthesis tank, a spray tower and a draught fan, wherein the first synthesis tank is provided with a first raw material inlet, a second raw material inlet, a tail gas outlet and a first liquid outlet; the second synthesis tank is provided with a first raw material receiving port, a second raw material receiving port and a second liquid outlet, and the first raw material receiving port is communicated with the first liquid outlet; a plurality of spray towers are sequentially communicated, each spray tower is communicated with a second raw material inlet, the first-stage spray tower is also communicated with a tail gas outlet, a plurality of spray layers are arranged in the spray towers, and the spray layers are arranged along the vertical direction; and the induced draft fan is communicated with the last stage of spray tower and is used for guiding tail gas to flow in the spray towers. The tail gas recovery device can effectively recover ammonia gas, reduce the ammonia content in tail gas emission and improve the utilization rate of ammonia.
Description
Technical Field
The utility model relates to the technical field of environmental protection recovery, in particular to a tail gas recovery device.
Background
Ammonia water is needed in the process of blending the cuprammonia in the existing production process, the prepared cuprammonia can emit a large amount of ammonia, and the escape of a large amount of ammonia can cause a workshop and exhaust tail gas to contain a large amount of ammonia, so that the exhaust emission does not accord with the emission standard, and the requirement of a green environment-friendly energy-saving policy is not met. And the ammonia gas is colorless, has strong pungent odor, has great toxicity to human bodies, and can seriously affect the physical and psychological health of staff. For this reason, an apparatus capable of efficiently treating ammonia gas is required.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a tail gas recovery device which can effectively recover ammonia gas, reduce the ammonia content in tail gas emission and improve the utilization rate of ammonia.
The tail gas recovery device comprises a first synthesis tank, a second synthesis tank, a spray tower and a draught fan, wherein the first synthesis tank is provided with a first raw material inlet, a second raw material inlet, a tail gas outlet and a first liquid outlet; the second synthesis tank is provided with a first raw material receiving port, a second raw material receiving port and a second liquid outlet, the first raw material receiving port is communicated with the first liquid outlet, and the second liquid outlet is used for discharging the solution in the second synthesis tank; the spray towers are sequentially communicated, each spray tower is communicated with the second raw material inlet, the first stage spray tower is also communicated with the tail gas outlet, and a plurality of spray layers which are distributed along the vertical direction of the spray towers are arranged in the spray towers; and the induced draft fan is communicated with the last stage of the spray tower and is used for guiding tail gas to flow in the spray towers.
The tail gas recovery device provided by the embodiment of the utility model at least has the following beneficial effects: under the effect of draught fan, tail gas such as the ammonia that gives out because of preparing the cuprammonia in the first synthesis jar gets into a plurality of spray towers that communicate in proper order and carries out multistage absorption processing, and absorb tail gas to the spray liquor reflux of saturated condition to the first synthesis jar in, form the circulation, can retrieve the ammonia effectively, reduce the content of ammonia in the tail gas, the utilization ratio to the ammonia has been improved, and can also do further processing synthetic alkali copper liquid to the cuprammonia, the while has reduced the pollution of ammonia to workshop environment, reduce the influence to staff physical and mental health.
According to some embodiments of the utility model, a first reduced speed mixer is disposed within the first synthesis tank for mixing the solution within the first synthesis tank.
According to some embodiments of the utility model, a second agitator reducer is provided in the second synthesis tank for agitating the solution in the second synthesis tank.
According to some embodiments of the utility model, the spray tower is further provided with a pressure relief circulating pipe, a first end of the pressure relief circulating pipe is connected with the input end of the spray layer, and a second end of the pressure relief circulating pipe is communicated with the spray tower.
According to some embodiments of the present invention, a spraying liquid tank is disposed at a lower portion of the spraying tower, the spraying liquid tank extends outward of the spraying tower, and the second end of the pressure relief circulation pipe is inserted into the spraying liquid tank.
According to some embodiments of the utility model, the pressure relief circulation pipe is further provided with a pressure relief valve.
According to some embodiments of the utility model, the spray tower further comprises a spray pump, an input end of the spray pump is communicated with the lower part of the spray tower, an output end of the spray pump is communicated with the spray layer, and the spray pump is used for conveying spray liquid positioned at the lower part of the spray tower to the spray layer.
According to some embodiments of the utility model, the spray layer comprises a plurality of nozzles.
According to some embodiments of the utility model, the output of the spray pump is provided with a spray valve.
According to some embodiments of the utility model, the first raw material inlet, the second raw material inlet, the first raw material receiving opening and the second raw material receiving opening are all provided with gate valves, and the outlet of the induced draft fan is provided with a tail gas main valve.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a tail gas recovery device according to an embodiment of the present invention.
Reference numerals:
a first synthesis tank 110, a first deceleration mixer 111; a second synthesis tank 120, a second reduction mixer 121; the spray tower 130, the spray layer 131, the nozzle 1311, the spray liquid tank 132 and the spray pump 133; an induced draft fan 140; a pressure-releasing circulation pipe 150; a gate valve 211, a spray valve 212, a pressure release valve 213 and a tail gas main valve 214; a pressurizing pump 221.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In some embodiments of the present invention, the tail gas recovery device includes a first synthesis tank 110, a second synthesis tank 120, a spray tower 130, and an induced draft fan 140, wherein a first liquid outlet on the first synthesis tank 110 is communicated with a first raw material receiving port of the second synthesis tank 120, a first raw material inlet on the first synthesis tank 110 is used for receiving ammonia water, which is one of raw materials for preparing cuprammonium solution, and a second raw material receiving port on the second synthesis tank 120 is used for receiving copper chloride solution, that is, by preparing cuprammonium solution in the first synthesis tank 110, flowing into the second synthesis tank 120 through the first liquid outlet, performing processing treatment to prepare alkaline copper solution, and discharging the prepared alkaline copper solution from the second liquid outlet. Tail gas (such as ammonia gas and the like) escapes in the process of adding raw materials into the first synthesis tank 110 or reacting the solution in the first synthesis tank 110, and the first synthesis tank 110 is communicated with the spray tower 130 through a tail gas outlet, so that the tail gas can escape into the spray tower 130.
The spray towers 130 are provided in plurality, the spray towers 130 are sequentially communicated, and each spray tower 130 is also communicated with the second raw material inlet of the first synthesis tank 110, that is, the spray liquid after absorbing the tail gas flows into the first synthesis tank 110 as the raw material for preparing the cuprammonia. The spray tower 130 communicated with the tail gas outlet of the first synthesis tank 110 is a first stage spray tower, which is a second stage spray tower, a third stage spray tower, and the like in turn, and the induced draft fan 140 is communicated with the last stage spray tower 130, so that the tail gas can flow from the first synthesis tank 110 through the treatment of each stage of spray tower 130, and finally reaches the emission standard.
The spray tower 130 is internally provided with a plurality of spray layers 131, the spray layers 131 are arranged along the vertical direction of the spray tower 130, namely the spray layers 131 are arranged in an up-down layered manner along the axial direction of the spray tower 130, the induced draft fan 140 guides the tail gas to flow from bottom to top, and the spray layers 131 arranged in a layered manner can enable the spray liquid to better absorb the tail gas, so that the tail gas absorption efficiency is improved.
In some embodiments of the present invention, a first speed reduction stirrer 111 is disposed in the first synthesis tank 110, and the stirring shaft is rotated by the driving motor of the first speed reduction stirrer 111, so that the stirring blades disposed on the stirring shaft continuously stir the solution to promote the synthesis of the cuprammonia. It should be noted that the first speed reduction agitator 111 may be disposed along the axial direction or the circumferential direction of the first synthesis tank 110, and the agitating blades may be disposed on the agitating shaft in a spiral winding manner or a layered arrangement manner.
In some embodiments of the present invention, a second speed reduction stirrer 121 is disposed in the second synthesis tank 120, and the stirring shaft is rotated by the driving motor of the second speed reduction stirrer 121, so that the stirring blades disposed on the stirring shaft continuously stir the solution to promote the synthesis of the alkali copper solution. It should be noted that the second speed-reducing agitator 121 may be disposed along the axial direction or the circumferential direction of the second synthesis tank 120, and the agitating blades may be disposed on the agitating shaft in a spiral winding manner or a layered arrangement manner.
In some embodiments of the present invention, the first end of the pressure-releasing circulation tube 150 is connected to the input end of the spray layer 131, and the second end of the pressure-releasing circulation tube 150 is connected to the spray tower 130, it can be understood that the spray tower 130 is connected to the spray layer 131 through the pressure-releasing circulation tube 150, and the spray layer 131 is disposed in the spray tower 130, when the spray liquid is transported to the spray layer 131 through the pipeline, the spray layer 131 sprays the spray liquid to absorb ammonia gas with poor effect due to too high hydraulic pressure, so the pressure-releasing circulation tube 150 is disposed, and the spray liquid transmitted to the spray layer 131 can partially flow into the spray tower 130 through the pressure-releasing circulation tube 150, so as to achieve the effect of reducing pressure.
In some embodiments of the present invention, the pressure relief circulation pipe 150 is further provided with a pressure relief valve 213, so that when pressure relief is not needed, the pressure relief circulation pipe 150 is closed, and it is avoided that the spraying liquid is difficult to spray due to insufficient hydraulic pressure of the spraying layer 131.
In some embodiments of the present invention, the spray liquid groove 132 is disposed at a lower portion of the spray tower 130 for collecting the spray liquid sprayed from the spray layer 131, and the spray liquid groove 132 extends outward of the spray tower 130, it being understood that the spray liquid groove 132 is disposed in the spray tower 130, and a portion of the spray liquid groove 132 protrudes out of the spray tower 130, and it is contemplated that, in order to ensure the sealing performance of the spray tower 130, the portion of the spray liquid groove 132 protruding out is also sealed. The second end of the pressure-releasing circulation pipe 150, that is, the end of the pressure-releasing circulation pipe 150 connected to the spray tower 130 is connected to the extended portion of the spray liquid tank 132 and inserted into the groove, and the spray liquid can be introduced into the spray liquid tank 132 through the pressure-releasing circulation pipe 150.
In some embodiments of the present invention, the spray tower 130 further includes a spray pump 133, the spray pump 133 is disposed at one side of the spray tower 130, an input end of the spray pump 133 is communicated with a lower portion of the spray tower 130, and an output end of the spray pump 133 is communicated with the spray layer 131, it can be understood that the spray layer 131 can provide spray liquid from a device dedicated for storing the spray liquid, or the spray liquid can be pre-introduced into the spray tower 130, and the spray liquid is sprayed from top to bottom due to the arrangement of the spray layer 131, and finally converged at the lower portion of the spray tower 130, and the spray liquid at the lower portion of the spray tower 130 can be returned to the spray layer 131 through the spray pump 133, so that the spray liquid absorbs the tail gas until the spray liquid is in a saturated state, thereby saving the spray liquid, saturating the spray liquid in a continuous circulation process, and providing a utilization rate of the spray liquid.
In some embodiments of the present invention, the spray layer 131 is provided with a plurality of nozzles 1311, and the plurality of nozzles 1311 may spray the spray liquid at different spray angles, for example, the nozzle a sprays the spray liquid at an angle parallel to the axial direction of the spray tower 130, and the nozzle B sprays the spray liquid at an angle of 45 degrees to the axial direction of the spray tower 130. The spray nozzles 1311 can spray the spray liquid in an umbrella shape, so that the spray liquid can better absorb the tail gas. It should be noted that the spray angle refers to the smallest included angle formed by the intersection of the axis of the nozzle 1311 and the axis of the spray tower 130.
In some embodiments of the present invention, a spray valve 212 is provided at the output of the spray pump 133. In use, the spray valve 212 needs to be closed after the spray pump 133 is turned off to prevent the spray liquid from flowing back.
In some embodiments of the present invention, gate valves 211 are disposed on the first material inlet, the second material inlet, the first material receiving port, and the second material receiving port to prevent excess material from entering the first synthesis tank 110 or the second synthesis tank 120. The outlet of the induced draft fan 140 is provided with a tail gas main valve 214, and when the whole device does not work, the tail gas main valve 214 needs to be closed, so that the pollution to the environment caused by the discharge of untreated tail gas is avoided.
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1, taking two spray towers 130 as an example, the tail gas outlet of the first synthesis tank 110 is communicated with a first stage spray tower I, the first stage spray tower I is communicated with a second stage spray tower II, and the second stage spray tower II is communicated with an induced draft fan 140, so that the tail gas can flow along the first synthesis tank 110, the first stage spray tower I, the second stage spray tower II and the induced draft fan 140, and can be adjusted according to the ammonia odor concentration of the production environment by adjusting the frequency of the induced draft fan 140, and the working frequency of the induced draft fan 140 is increased if the ammonia odor concentration is high.
And the two spray towers 130 transmit the spray liquid in the spray liquid groove 132 to the spray layer 131 through the spray pump 133, the output end of the spray layer 131 is also communicated with a pressure relief circulating pipe 150, one end of the pressure relief circulating pipe 150 is inserted into the spray liquid in the spray liquid groove 132, and the pressure relief circulating pipe 150 can share the hydraulic pressure of the spray layer 131. When the spray liquid in the spray towers 130 absorbs ammonia to a saturated state, the gate valve 211 is opened to make the spray liquid flow into the first synthesis tank 110 from the second raw material inlet, the ammonia water is connected to the first raw material inlet of the cuprammonia liquid pipe, and the spray liquid is led to the first synthesis tank 110 from the output ends of the spray pumps 133 on the two spray towers 130.
The first synthesis tank 110 is communicated with the second synthesis tank 120, that is, the first liquid outlet is communicated with the first raw material receiving port, the second raw material receiving port of the second synthesis tank 120 is connected with the copper chloride solution, and the pressure pumps 221 are arranged between the first synthesis tank 110 and the second synthesis tank 120 and at the second liquid outlet of the second synthesis tank 120 to accelerate the transmission of the ammoniacal copper solution and the alkaline copper solution. In each of the first and second synthesis tanks 110 and 120, a speed reduction stirrer, such as a first speed reduction stirrer 111 and a second speed reduction stirrer 121, is provided to accelerate the reaction process by stirring the solution.
The spray solution can adopt a copper chloride solution, and the copper chloride can react with ammonia gas to generate a stable complex: the copper tetraammine chloride has obvious effect on the absorption of ammonia gas, and the saturated copper chloride waste liquid can be used for preparing cuprammonia, thus meeting the requirement of environmental protection and utilization.
The copper chloride solution is pressurized by the spray pump 133, and is sprayed out in an umbrella shape after reaching the upper spray layer 131, the tail gas is continuously pumped from the bottom by the action of the induced draft fan 140, and moves upwards from the bottom of the spray tower 130 to be contacted with the sprayed spray liquid, the ammonia gas is absorbed and dissolved in the copper chloride solution, and the rest tail gas is subjected to next-stage treatment under the action of the induced draft fan 140 and finally reaches a tail gas discharge port at the top of the building.
Sampling analysis was performed on the spray solution for three consecutive days to obtain the following analysis table:
the first-stage spray liquid is the spray liquid in the first-stage spray tower I, and the second-stage spray liquid is the spray liquid in the second-stage spray tower II.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A tail gas recovery device, comprising:
the first synthesis tank is provided with a first raw material inlet, a second raw material inlet, a tail gas outlet and a first liquid outlet;
the second synthesis tank is provided with a first raw material receiving port, a second raw material receiving port and a second liquid outlet, and the first raw material receiving port is communicated with the first liquid outlet;
the spray towers are sequentially communicated, each spray tower is communicated with the second raw material inlet, the first stage of spray tower is also communicated with the tail gas outlet, and a plurality of spray layers which are distributed along the vertical direction of the spray towers are arranged in the spray towers;
and the induced draft fan is communicated with the last stage of the spray tower and is used for guiding tail gas to flow in the spray tower.
2. The exhaust gas recovery device according to claim 1, wherein a first deceleration mixer is provided in the first synthesis tank, and the first deceleration mixer is configured to mix the solution in the first synthesis tank.
3. The exhaust gas recovery device according to claim 1, wherein a second deceleration mixer is provided in the second synthesis tank, and the second deceleration mixer is configured to mix the solution in the second synthesis tank.
4. The tail gas recovery device according to claim 1, wherein the spray tower is further provided with a pressure relief circulation pipe, a first end of the pressure relief circulation pipe is connected with an input end of the spray layer, and a second end of the pressure relief circulation pipe is communicated with the spray tower.
5. The tail gas recovery device according to claim 4, wherein a spray liquid tank is arranged at a lower portion of the spray tower, the spray liquid tank extends out of the spray tower, and a second end of the pressure relief circulation pipe is inserted into the spray liquid tank.
6. The tail gas recovery device according to claim 4 or 5, wherein a pressure relief valve is further arranged on the pressure relief circulation pipe.
7. The tail gas recovery device according to claim 1, wherein the spray tower further comprises a spray pump, an input end of the spray pump is communicated with a lower portion of the spray tower, an output end of the spray pump is communicated with the spray layer, and the spray pump is used for conveying spray liquid located at the lower portion of the spray tower to the spray layer.
8. The exhaust gas recovery device according to claim 1, 4, 5 or 7, wherein the spray layer comprises a plurality of nozzles.
9. The exhaust gas recovery device according to claim 7, wherein the output end of the spray pump is provided with a spray valve.
10. The tail gas recovery device of claim 1, wherein the first raw material inlet, the second raw material inlet, the first raw material receiving opening and the second raw material receiving opening are all provided with gate valves, and an outlet of the induced draft fan is provided with a tail gas main valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121228643.3U CN215463139U (en) | 2021-06-02 | 2021-06-02 | Tail gas recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121228643.3U CN215463139U (en) | 2021-06-02 | 2021-06-02 | Tail gas recovery device |
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| CN215463139U true CN215463139U (en) | 2022-01-11 |
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| CN202121228643.3U Active CN215463139U (en) | 2021-06-02 | 2021-06-02 | Tail gas recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228902A (en) * | 2022-07-21 | 2022-10-25 | 洋耳科技(杭州)有限公司 | Skid-mounted hazardous waste and solid waste treatment equipment and method |
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2021
- 2021-06-02 CN CN202121228643.3U patent/CN215463139U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228902A (en) * | 2022-07-21 | 2022-10-25 | 洋耳科技(杭州)有限公司 | Skid-mounted hazardous waste and solid waste treatment equipment and method |
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