CN209752551U - deamination tail gas is retrieved and purifier - Google Patents
deamination tail gas is retrieved and purifier Download PDFInfo
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- CN209752551U CN209752551U CN201920207521.2U CN201920207521U CN209752551U CN 209752551 U CN209752551 U CN 209752551U CN 201920207521 U CN201920207521 U CN 201920207521U CN 209752551 U CN209752551 U CN 209752551U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model discloses a deamination tail gas is retrieved and purifier, include: an ammonia gas absorption device and a deamination purification device; the ammonia gas absorption device comprises: the ammonia absorption tower and the heat exchanger are used for reducing the temperature of the circulating water solution; deamination purifier includes: the device comprises a deamination purification tower, a first circulating spray pump for pumping circulating purification liquid at the upper part of a recovery layer of the purification tower to a spray layer of the purification tower, and a liquid discharge pump for pumping the circulating purification liquid at the bottom of the recovery layer of the purification tower; the utility model discloses can reduce circulating water solution's temperature, make the reaction temperature who contains ammonia tail gas and circulating water solution reduce, improve the reaction efficiency of ammonia and circulating water solution, can all keep the circulation purifying liquid of deamination purifying tower to spray the flow that shines enough at any moment simultaneously, improve the effect that the ammonia purifies, protect the environment effectively, improve the recycle rate of circulation purifying liquid simultaneously, reduce the regional stratified phenomenon of bottom of the purifying column.
Description
Technical Field
the utility model relates to a waste gas treatment field, concretely relates to deamination tail gas is retrieved and purifier.
Background
Under the background that the environmental protection requirement is more and more strict, waste gas that produces among the chemical production often needs to pass through a series of processings and can reach the emission requirement, the method of handling the tail gas that contains ammonia at present is with containing ammonia waste gas input to the ammonia absorption tower, use the pure water to adsorb the recovery ammonia, later with during surplus gas discharges to the deamination purifying column, through spraying liquid processing, discharge in the air at last, but the temperature of the waste gas that contains ammonia that generally inputs in the ammonia absorption tower is higher, lead to the absorption effect lower in the ammonia absorption tower, cause the load that deamination purifying column purified ammonia is heavier, need frequently to change the circulation scavenging solution. At changing circulation scavenging solution in-process, because circulation scavenging solution can not in time sufficient supply, arouse that the spray solution sprays the flow too little, lead to the ammonia purifying effect relatively poor, cause the ammonia to leak, cause the environmental protection problem, the bottom clearance of circulation scavenging solution is not abundant simultaneously can cause deamination scavenging solution bottom to take place regional layering phenomenon, reduces the utilization ratio of circulation scavenging solution.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, an object of the utility model is to provide a deamination tail gas is retrieved and purifier, can reduce the temperature of circulating aqueous solution, make the reaction temperature who contains ammonia tail gas and circulating aqueous solution reduce, improve the ammonia and the reaction efficiency of circulating aqueous solution, can all keep the circulation purifying liquid of deamination purifying tower to spout the flow that shines at any moment simultaneously sufficient, improve the effect of ammonia purification, the environment has been protected effectively, the recycle who circulates the purifying liquid has been improved simultaneously and has been rateed, reduce the regional stratified phenomenon of purifying tower bottom emergence.
The utility model provides a technical scheme that its problem adopted is:
The utility model provides a deamination tail gas is retrieved and purifier, includes: an ammonia gas absorption device and a deamination purification device;
The ammonia gas absorption device comprises: an ammonia absorption tower comprising: the absorption tower recovery layer and the absorption tower spraying layer with at least one layer in number are arranged below the absorption tower spraying layer; the ammonia gas absorbing device further comprises: the heat exchanger is used for reducing the temperature of the circulating water solution; the heat exchanger is respectively connected with the bottom of the absorption tower recovery layer and the absorption tower spray layer;
Deamination purifier includes: the deammoniation purification tower comprises a purification tower recovery layer and at least one purification tower spray layer, wherein the purification tower recovery layer is arranged below the purification tower spray layer; deamination purifier still includes: the first circulating spray pump is used for pumping the circulating purification liquid at the upper part of the recovery layer of the purification tower to the spray layer of the purification tower, and the liquid discharge pump is used for pumping the circulating purification liquid at the bottom of the recovery layer of the purification tower; the liquid discharge pump is connected with the bottom of the purification tower recovery layer, and the first circulating spray pump is respectively connected with the upper part of the purification tower recovery layer and the purification tower spray layer;
The top of the ammonia absorption tower is connected with the recovery layer of the purification tower.
Further, the ammonia gas absorbing device further comprises: and the second circulating spray pump is used for pumping the circulating water solution of the absorption tower recovery layer to the absorption tower spray layer and is respectively connected with the absorption tower recovery layer and the heat exchanger.
Further, a first liquid level meter is connected to the side wall of the recovery layer of the absorption tower.
Furthermore, a thermometer is connected to the side wall of the recovery layer of the absorption tower.
Further, the bottom of the spray layer of the absorption tower is provided with a first filler for increasing the contact area between the ammonia gas and the circulating aqueous solution.
Further, a second liquid level meter and a liquid level controller are connected to the side wall of the recovery layer of the purification tower, and the liquid level controller is respectively connected with the second liquid level meter and the liquid discharge pump.
Further, the deamination purifying tower still includes: the device comprises a switch valve and a purifying liquid device for outputting initial purifying liquid; the purifying liquid device is respectively connected with the purifying tower recovery layer and the liquid level controller through a switch valve, and the purifying liquid device is connected with the purifying tower spraying layer.
Further, a pH detector is arranged in the recovery layer of the purification tower.
Further, the deamination purifying tower still includes: a first pressure gauge and a second pressure gauge; the first pressure gauge is connected with the first circulating spray pump, and the second pressure gauge is connected with the liquid discharge pump.
Further, the bottom of the purification tower spraying layer is provided with a second filler for increasing the contact surface between the ammonia gas and the circulating purification liquid and the initial purification liquid.
The embodiment of the utility model provides an in the technical scheme who provides, following beneficial effect has at least: the heat exchanger can cool the circulating water solution, so that the reaction temperature of the circulating water solution and ammonia gas is reduced, and the reaction efficiency of the ammonia gas and the circulating water solution is improved; the liquid discharge pump extracts the circulating purification liquid from the bottom of the recovery layer of the purification tower for replacement, so that the phenomenon of regional layering at the bottom of the recovery layer of the purification tower is avoided, and the recovery utilization rate of the circulating purification liquid is improved; meanwhile, the first circulating spray pump continuously pumps the circulating purification liquid to the purification tower spray layer, so that the purification tower spray layer can keep sufficient spraying of the circulating purification liquid at any time, the ammonia purification effect is improved, and the environment is effectively protected.
Drawings
The invention is further described with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of an embodiment of the deamination tail gas recovery and purification device of the present invention.
Detailed Description
Generally, the temperature of the ammonia-containing waste gas discharged into the ammonia gas absorption tower 100 is relatively high, which results in the decrease of the ammonia gas absorption effect of the ammonia gas absorption tower 100, and causes the heavy load of the ammonia gas purification of the deamination purification tower 200, and the frequent replacement of the circulating purification liquid. At changing circulation scavenging solution in-process, because circulation scavenging solution can not in time sufficient supply, arouse that circulation scavenging solution sprays the flow too little, lead to the ammonia purifying effect relatively poor, cause the ammonia to leak, cause the environmental protection problem, the bottom clearance of circulation scavenging solution is not enough simultaneously can cause deamination purifying tower 200 bottom to take place regional layering phenomenon, reduces the utilization ratio of circulation scavenging solution.
Based on this, the utility model provides a deamination tail gas is retrieved and purifier can reduce circulating water solution's temperature, makes the reaction temperature who contains ammonia tail gas and circulating water solution reduce, improves ammonia and circulating water solution's reaction efficiency, can all keep the circulation purifying liquid of deamination purifying column 200 to spout the flow of shining simultaneously at any moment enough, improves ammonia purification's effect, has protected the environment effectively, has improved circulation purifying liquid's recovery utilization ratio simultaneously, reduces the regional stratified phenomenon of purifying column bottom emergence.
The embodiments of the present invention will be further explained with reference to the drawings.
referring to fig. 1, an embodiment of the utility model provides a deamination tail gas is retrieved and purifier, include: an ammonia gas absorption device and a deamination purification device;
The ammonia gas absorption device comprises: an ammonia gas absorption tower 100, said ammonia gas absorption tower 100 comprising: the absorption tower comprises an absorption tower recovery layer 110 and at least one absorption tower spraying layer 120, wherein the absorption tower recovery layer 110 is arranged below the absorption tower spraying layer 120; the ammonia gas absorbing device further comprises: a heat exchanger 130 for reducing the temperature of the circulating aqueous solution; the heat exchanger 130 is respectively connected with the bottom of the absorption tower recovery layer 110 and the absorption tower spraying layer 120;
Deamination purifier includes: the ammonia removal purification tower 200 comprises a purification tower recovery layer 210 and at least one purification tower spraying layer 220, wherein the purification tower recovery layer 210 is arranged below the purification tower spraying layer 220; deamination purifier still includes: a first circulating spray pump 230 for pumping the circulating purification liquid at the upper part of the purification tower recovery layer 210 to the purification tower spray layer 220, and a drain pump 240 for pumping the circulating purification liquid at the bottom of the purification tower recovery layer 210; the liquid discharge pump 240 is connected with the bottom of the purification tower recovery layer 210, and the first circulating spray pump 230 is respectively connected with the upper part of the purification tower recovery layer 210 and the purification tower spray layer 220;
The top of the ammonia absorption tower 100 is connected with a purification tower recovery layer 210.
In this embodiment, before the ammonia-containing tail gas is treated, a certain amount of circulating aqueous solution is input into the absorption tower recovery layer 110, a certain amount of circulating purification solution is input into the purification tower recovery layer 210, and the circulating purification solution has a content such that the circulating spray pump can sufficiently pump the circulating purification solution to the spray layer.
in the process of treating tail gas containing ammonia, cooling water is injected into the heat exchanger 130, exchanges heat with the circulating water solution extracted by the absorption tower recovery layer 110, and then is output to the absorption tower spraying layer 120; the ammonia-containing tail gas is discharged into the absorption tower recovery layer 110, and the ammonia gas gradually rises to enter the absorption tower spray layer 120 to react with the circulating water solution because the density of the ammonia gas is lower than that of the air. Because the temperature of the circulating water solution is low, the reaction with ammonia gas is facilitated, and the absorption of the circulating water solution to the ammonia gas is improved.
The residual ammonia-containing waste gas after the treatment of the ammonia absorption tower 100 is discharged into the purification tower recovery layer 210 from the top of the ammonia absorption tower 100, and the ammonia density is smaller than that of air, so the ammonia can gradually rise and enter the purification tower spray layer 220, and under the action of continuously inputting the circulating purification liquid into the purification tower spray layer 220 by the first circulating spray pump 230, the ammonia is enabled to react with the circulating purification liquid in the purification tower spray layer 220 to generate a solution containing the ammonia, and the solution drops to the purification tower recovery layer 210, and the ammonia and the circulating purification liquid are enabled to continuously react for multiple times by arranging the multiple layers of purification tower spray layers 220, so the ammonia content in the gas discharged from the ammonia removal purification tower 200 is enabled to be reduced to the minimum.
After the circulating purification liquid is used for a period of time, the concentration of ammonia ions in the solution can rise, so that the pH value of the circulating purification liquid changes, and when the pH value changes beyond a certain range, the circulating purification liquid needs to be replaced. When the circulating purification liquid is replaced, the circulating purification liquid is extracted from the bottom of the purification tower recovery layer 210 through the liquid discharge pump 240 for replacement, the bottom extraction arrangement avoids the phenomenon that precipitates or other insoluble substances generated by reaction are layered at the bottom of the spray tower, and particularly the corner position of the bottom of the purification tower recovery layer 210 improves the recovery utilization rate of the circulating purification liquid; when the circulating purification liquid is replaced, the first circulating spray pump 230 continues to pump the circulating purification liquid to the purification tower spray layer 220, so that the purification tower spray layer 220 can keep sufficient spraying of the circulating purification liquid at any time, the ammonia purification effect is improved, and the environment is effectively protected.
Further, another embodiment of the utility model provides a deamination tail gas is retrieved and purifier still, wherein, ammonia gas absorbing device still includes: and a second circulating spray pump 140 for pumping the circulating aqueous solution of the absorption tower recovery layer 110 to the absorption tower spray layer 120, wherein the second circulating spray pump 140 is respectively connected with the absorption tower recovery layer 110 and the heat exchanger 130.
in this embodiment, the second circulating spray pump 140 pumps the circulating aqueous solution in the absorption tower recovery layer 110 into the heat exchanger 130, the circulating aqueous solution exchanges heat with the cooling water in the heat exchanger 130 to cool the circulating aqueous solution, and then the circulating aqueous solution is pumped into the absorption tower spray layer 120 to react with ammonia, and the second circulating spray pump 140 provides power for the reaction of ammonia.
Further, another embodiment of the utility model provides a deamination tail gas is retrieved and purifier still, wherein, is connected with first level gauge 111 on the lateral wall of absorption tower recovery layer 110.
In this embodiment, the setting of the first liquid level meter 111 enables a user to observe the content of the circulating aqueous solution in the absorption tower recovery layer 110 in real time, and when the content of the circulating aqueous solution is lower than a certain liquid level, the circulating aqueous solution needs to be added in time, so as to avoid that the first circulating spray pump 230 cannot normally extract the circulating aqueous solution, so that the content of the circulating aqueous solution in the absorption tower spray layer 120 is too small, and the ammonia reaction is insufficient.
Further, the utility model discloses another embodiment still provides a deamination tail gas recovery and purifier, wherein, is connected with thermometer 112 on the lateral wall of absorption tower recovery layer 110.
In this embodiment, the thermometer 112 is configured to enable a user to observe the temperature of the circulating aqueous solution in the absorption tower recovery layer 110 in real time, and appropriately adjust the temperature of the cooling water in the heat exchanger 130 according to the temperature of the circulating aqueous solution, so that the temperature of the circulating aqueous solution after being processed by the heat exchanger 130 is kept within a certain range, the temperature of the reaction between the circulating aqueous solution in the absorption tower spray layer 120 and the ammonia gas is ensured, and the absorption efficiency of the ammonia gas is improved.
Further, another embodiment of the utility model provides a deamination tail gas is retrieved and purifier still, wherein, the bottom that the absorption tower sprayed layer 120 is provided with the first filler 121 that is used for increasing the area of contact between ammonia and the circulating water solution.
In this embodiment, the first filler 121 is disposed at the bottom of the spray layer 120 of the absorption tower, the first filler 121 may be an inert solid material, when ammonia gas reacts with the circulating aqueous solution, the ammonia gas drops onto the first filler 121 along with the circulating aqueous solution, the first filler 121 increases a contact surface between the ammonia gas and the circulating aqueous solution, so that the ammonia gas and the circulating aqueous solution are strongly mixed to react with each other, and the reaction efficiency between the ammonia gas and the circulating aqueous solution is improved.
Further, another embodiment of the utility model provides a deamination tail gas is retrieved and purifier still, wherein, is connected with second level gauge 211 and liquid level controller 212 on the lateral wall of purification tower recovery layer 210, liquid level controller 212 is connected with second level gauge 211 and positive displacement pump 240 respectively.
In this embodiment, the setting of second level gauge 211 makes the user can survey the content of circulation scavenging solution in purifying tower recovery layer 210 in real time, draw the in-process of changing circulation scavenging solution at positive displacement pump 240, when second level gauge 211 detects that the liquid level height of purifying tower recovery layer 210 is less than a take the altitude, liquid level controller 212 control positive displacement pump 240 halts the operation, stop the extraction to circulation scavenging solution, avoided because the content of circulation scavenging solution is low excessively, cause first circulation spray pump 230 can not normally draw circulation scavenging solution, cause the reaction of ammonia and circulation scavenging solution insufficient.
Further, another embodiment of the utility model provides a deamination tail gas is retrieved and purifier still, and wherein, deamination purge tower 200 still includes: an on-off valve 250 and a purification liquid device 260 for outputting an initial purification liquid; the purifying liquid device 260 is respectively connected with the purifying tower recovery layer 210 and the liquid level controller 212 through the switch valve 250, and the purifying liquid device 260 is connected with the purifying tower spraying layer 220.
In this embodiment, the initial purifying liquid output by the purifying liquid device 260 is mixed with the circulating purifying liquid in the purifying tower spraying layer 220 and reacts with the ammonia gas, so that the sufficiency of the spraying liquid is ensured, the ammonia gas can fully react with the spraying liquid, the effect of waste gas purification is improved, and the environment is effectively protected. Wherein, the spraying liquid is a mixture of the initial purifying liquid and the circulating purifying liquid.
When the second liquid level meter 211 detects that the liquid level of the purification tower recovery layer 210 is lower than a certain height, the liquid level controller 212 controls the switch valve 250 to open, so that the purification liquid device 260 inputs the initial purification liquid to the purification tower recovery layer 210 in time until the circulating purification liquid in the purification tower recovery layer 210 reaches a proper height, and the problem that the first circulating spray pump 230 cannot normally extract the circulating purification liquid to cause insufficient ammonia reaction is avoided.
further, another embodiment of the utility model provides a deamination tail gas is retrieved and purifier still, wherein, is provided with pH detector 213 in the purifying column recovery layer 210.
In this embodiment, the pH detector 213 helps the user to observe the pH of the circulating purified liquid in the recycling layer 210 of the purification tower, and the circulating purified liquid is timely replaced according to the change of the pH, so as to improve the purification effect of the ammonia gas.
Further, another embodiment of the utility model provides a deamination tail gas is retrieved and purifier still, and wherein, deamination purge tower 200 still includes: a first pressure gauge 270 and a second pressure gauge 280; the first pressure gauge 270 is connected to the first circulating spray pump 230, and the second pressure gauge 280 is connected to the drain pump 240.
In this embodiment, the first pressure gauge 270 can detect the pressure of the first circulating spray pump 230 circulating purification liquid in the pipeline to the pipeline, and the second pressure gauge 280 can detect the pressure of the drain pump 240 circulating purification liquid in the pipeline to the pipeline, so as to realize real-time detection of the pressure of the circulating purification liquid to the pipeline, help the user to adjust the operation rate of the first circulating spray pump 230 and the drain pump 240 according to the pressure condition, and avoid the pipeline from bursting due to excessive pressure.
Further, another embodiment of the utility model provides a deamination tail gas is retrieved and purifier still, wherein, the purifying column sprays the bottom on layer 220 and is provided with the second filler 221 that is used for increasing the contact surface between ammonia and circulation scavenging solution and the initial scavenging solution.
In this embodiment, the second filler 221 is disposed at the bottom of the spray layer 220 of the purification tower, the second filler 221 may be an inert solid material, when ammonia gas reacts with the circulating purification liquid, the exhaust gas drops onto the second filler 221 along with the circulating purification liquid, the second filler 221 increases the contact surface between the ammonia gas and the spray liquid, so that the ammonia gas and the spray liquid are strongly mixed to react with each other, the ammonia gas purification effect is improved, and the environment is effectively protected.
In addition, referring to fig. 1, another embodiment of the utility model also provides a deamination tail gas is retrieved and purifier, and this deamination tail gas is retrieved and purifier includes: an ammonia gas absorption device and a deamination purification device;
The ammonia gas absorption device comprises: the system comprises an absorption tower recovery layer 110, at least one absorption tower spraying layer 120, a second circulating spraying pump 140, a first liquid level meter 111, a heat exchanger 130 and a thermometer 112; the absorption tower recovery layer 110 is arranged below the absorption tower spraying layer 120, the bottom of the absorption tower spraying layer 120 is provided with a first filler 121, the heat exchanger 130 is connected with the absorption tower spraying layer 120, and the second circulating spraying pump 140 is respectively connected with the absorption tower recovery layer 110 and the heat exchanger 130;
Deamination purifier includes: a purification tower recovery layer 210, at least one purification tower spraying layer 220, a first circulating spraying pump 230, a liquid discharge pump 240, a second liquid level meter 211, a liquid level controller 212, a pH detector 213, a first pressure meter 270, a second pressure meter 280, a switch valve 250 and a purification liquid device 260 for outputting initial purification liquid; the purification tower recovery layer 210 is arranged below the purification tower spraying layer 220, and the bottom of the purification tower spraying layer 220 is provided with a second filler 221; the liquid discharge pump 240 is connected with the bottom of the purification tower recovery layer 210, the first circulating spray pump 230 is respectively connected with the upper part of the purification tower recovery layer 210 and the purification tower spray layer 220, the liquid level controller 212 is respectively connected with the second liquid level meter 211 and the liquid discharge pump 240, the purification liquid device 260 is respectively connected with the purification tower recovery layer 210 and the liquid level controller 212 through the switch valve 250, the purification liquid device 260 is connected with the purification tower spray layer 220, the first pressure gauge 270 is connected with the first circulating spray pump 230, and the second pressure gauge 280 is connected with the liquid discharge pump 240; the top of the ammonia absorption tower 100 is connected with a purification tower recovery layer 210.
In this embodiment, before the ammonia-containing tail gas is treated, a certain amount of circulating aqueous solution is input into the absorption tower recovery layer 110, a certain amount of circulating purification solution is input into the purification tower recovery layer 210, and the circulating purification solution has a content such that the circulating spray pump can sufficiently pump the circulating purification solution to the spray layer.
in the process of treating the tail gas containing ammonia, the tail gas containing ammonia is discharged into the absorption tower recovery layer 110, and the ammonia gradually rises to enter the absorption tower spraying layer 120 because the density of the ammonia is less than that of air; the second circulating spray pump 140 pumps the circulating water solution in the absorption tower recovery layer 110 to the heat exchanger 130, and exchanges heat with the cooling water in the heat exchanger 130, so that the circulating water solution is cooled and then is output to the absorption tower spray layer 120 to react with ammonia, and the second circulating spray pump 140 provides power for the reaction of ammonia. Because the heat exchanger 130 enables the temperature of the circulating water solution to be lower, the reaction with ammonia gas is facilitated, and the absorption of the circulating water solution to the ammonia gas is improved.
The first liquid level meter 111 enables a user to observe the content of the circulating water solution in the absorption tower recovery layer 110 in real time, when the content of the circulating water solution is lower than a certain liquid level, the circulating water solution needs to be added in time, and the situation that the first circulating spray pump 230 cannot normally extract the circulating water solution is avoided, so that the content of the circulating water solution in the absorption tower spray layer 120 is too small, and the ammonia gas is insufficiently absorbed. The thermometer 112 enables a user to observe the temperature of the circulating aqueous solution in the absorption tower recovery layer 110 in real time, and properly adjust the temperature of the cooling water in the heat exchanger 130 according to the temperature of the circulating aqueous solution, so that the temperature of the circulating aqueous solution is kept within a certain range after the circulating aqueous solution is treated by the heat exchanger 130, the temperature of the reaction between the circulating aqueous solution in the absorption tower spraying layer 120 and ammonia gas is ensured, and the absorption efficiency of the ammonia gas is improved. The first filler 121 is arranged at the bottom of the absorption tower spraying layer 120, when ammonia gas reacts with the circulating aqueous solution, the ammonia gas drops on the first filler 121 along with the circulating aqueous solution, the first filler 121 enlarges the contact surface of the ammonia gas and the circulating aqueous solution, so that the ammonia gas and the circulating aqueous solution are mixed strongly to react with each other, and the reaction efficiency of the ammonia gas and the circulating aqueous solution is improved.
the residual ammonia-containing waste gas treated by the ammonia absorption tower 100 is discharged into the purification tower recovery layer 210 from the top of the ammonia absorption tower 100, the purification liquid is continuously input into the purification tower spray layer 220 in the purification liquid container, and under the action of continuously inputting the circulating purification liquid into the purification tower spray layer 220 by the first circulating spray pump 230, the ammonia falls onto the second filler 221 along with the spray liquid, the second filler 221 increases the contact surface of the ammonia and the spray liquid, so that the ammonia and the spray liquid are mixed strongly and react with each other to generate solution containing ammonia ions, and the solution drops onto the purification tower recovery layer 210, and the ammonia and the spray liquid continuously react for multiple times by arranging the multiple purification tower spray layers 220, so that the ammonia concentration in the gas discharged from the ammonia removal purification tower 200 is reduced to the minimum. Wherein, the spraying liquid is a mixture of the initial purifying liquid and the circulating purifying liquid.
After the circulating purification liquid is used for a period of time, the concentration of ammonia ions in the solution will increase, which causes the pH value of the circulating purification liquid to change, and when the pH detector 213 detects that the pH value changes beyond a certain range, the circulating purification liquid needs to be replaced. When the circulating purification liquid is replaced, the circulating purification liquid is extracted from the bottom of the purification tower recovery layer 210 through the liquid discharge pump 240 for replacement, the bottom extraction arrangement avoids the phenomenon that precipitates or other insoluble substances generated by the reaction of ammonia-containing waste gas and spray liquid are layered with the circulating purification liquid at the bottom of the purification tower spray tower, and particularly improves the recovery utilization rate of the circulating purification liquid at the corner position of the bottom of the purification tower recovery layer 210; when the circulating purification liquid is replaced, the first circulating spray pump 230 continues to pump the circulating purification liquid to the purification tower spray layer 220, and the purification liquid device 260 continues to input the initial purification liquid to the purification tower spray layer 220, so that the purification tower spray layer 220 can keep sufficient spraying of the spray liquid at any time, the ammonia purification effect is improved, and the environment is effectively protected.
In the process of replacing the circulating purification liquid, the second liquid level meter 211 detects the liquid level height of the circulating purification liquid in the purification tower recovery layer 210 at any moment, when the liquid level height is lower than a certain range, the liquid level controller 212 receives a low liquid level signal of the second liquid level meter 211, the liquid discharge pump 240 is controlled to pause, the extraction of the circulating purification liquid is stopped, meanwhile, the switch valve 250 is controlled to be opened, the purification liquid device 260 inputs the initial purification liquid to the purification tower recovery layer 210 in time, until the circulating purification liquid in the purification tower recovery layer 210 reaches a proper height, the switch valve 250 is controlled to be closed by the liquid level controller 212, the content of the circulating purification liquid in the purification tower recovery layer 210 is ensured, the first circulating spray pump 230 can normally supply the circulating purification liquid to the purification tower spray layer 220, the situation that the spray liquid is insufficient is avoided, and the ammonia gas is not fully reacted.
First pressure gauge 270 can detect the pressure of first circulation pump 230 pipeline inner loop scavenging solution to the pipeline, and second pressure gauge 280 can detect positive displacement pump 240 pipeline inner loop scavenging solution to the pressure of pipeline, realizes real-time detection circulation scavenging solution to the pressure of pipeline, helps the user according to the condition of pressure, adjusts the running rate of first circulation pump 230 and positive displacement pump 240, avoids pipeline pressure too big emergence to burst.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention defined by the appended claims.
Claims (10)
1. The utility model provides a deamination tail gas is retrieved and purifier which characterized in that: the method comprises the following steps: an ammonia gas absorption device and a deamination purification device;
The ammonia gas absorption device comprises: an ammonia absorption tower comprising: the absorption tower recovery layer and the absorption tower spraying layer with at least one layer in number are arranged below the absorption tower spraying layer; the ammonia gas absorbing device further comprises: the heat exchanger is used for reducing the temperature of the circulating water solution; the heat exchanger is respectively connected with the bottom of the absorption tower recovery layer and the absorption tower spray layer;
Deamination purifier includes: the deammoniation purification tower comprises a purification tower recovery layer and at least one purification tower spray layer, wherein the purification tower recovery layer is arranged below the purification tower spray layer; deamination purifier still includes: the first circulating spray pump is used for pumping the circulating purification liquid at the upper part of the recovery layer of the purification tower to the spray layer of the purification tower, and the liquid discharge pump is used for pumping the circulating purification liquid at the bottom of the recovery layer of the purification tower; the liquid discharge pump is connected with the bottom of the purification tower recovery layer, and the first circulating spray pump is respectively connected with the upper part of the purification tower recovery layer and the purification tower spray layer;
The top of the ammonia absorption tower is connected with the recovery layer of the purification tower.
2. The deamination tail gas recovery and purification device according to claim 1, wherein the deamination tail gas recovery and purification device comprises: the ammonia gas absorbing device further comprises: and the second circulating spray pump is used for pumping the circulating water solution of the absorption tower recovery layer to the absorption tower spray layer and is respectively connected with the absorption tower recovery layer and the heat exchanger.
3. The deamination tail gas recovery and purification device according to claim 1, wherein the deamination tail gas recovery and purification device comprises: and a first liquid level meter is connected to the side wall of the absorption tower recovery layer.
4. The deamination tail gas recovery and purification device according to claim 1, wherein the deamination tail gas recovery and purification device comprises: and a thermometer is connected to the side wall of the absorption tower recovery layer.
5. The deamination tail gas recovery and purification device according to claim 1, wherein the deamination tail gas recovery and purification device comprises: and the bottom of the spraying layer of the absorption tower is provided with a first filler for increasing the contact area between the ammonia gas and the circulating aqueous solution.
6. the deamination tail gas recovery and purification device according to claim 1, wherein the deamination tail gas recovery and purification device comprises: and the side wall of the recovery layer of the purification tower is connected with a second liquid level meter and a liquid level controller, and the liquid level controller is respectively connected with the second liquid level meter and a liquid discharge pump.
7. The deamination tail gas recovery and purification device according to claim 6, wherein the deamination tail gas recovery and purification device comprises: deamination purifying column still includes: the device comprises a switch valve and a purifying liquid device for outputting initial purifying liquid; the purifying liquid device is respectively connected with the purifying tower recovery layer and the liquid level controller through a switch valve, and the purifying liquid device is connected with the purifying tower spraying layer.
8. The deamination tail gas recovery and purification device according to claim 1, wherein the deamination tail gas recovery and purification device comprises: and a pH detector is arranged in the purification tower recovery layer.
9. The deamination tail gas recovery and purification device according to claim 1, wherein the deamination tail gas recovery and purification device comprises: deamination purifying column still includes: a first pressure gauge and a second pressure gauge; the first pressure gauge is connected with the first circulating spray pump, and the second pressure gauge is connected with the liquid discharge pump.
10. The deamination tail gas recovery and purification device according to any one of claims 1 to 9, wherein: and a second filler for increasing the contact surface between the ammonia gas and the circulating purification liquid and the initial purification liquid is arranged at the bottom of the purification tower spraying layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920207521.2U CN209752551U (en) | 2019-02-18 | 2019-02-18 | deamination tail gas is retrieved and purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920207521.2U CN209752551U (en) | 2019-02-18 | 2019-02-18 | deamination tail gas is retrieved and purifier |
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| Publication Number | Publication Date |
|---|---|
| CN209752551U true CN209752551U (en) | 2019-12-10 |
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| CN201920207521.2U Active CN209752551U (en) | 2019-02-18 | 2019-02-18 | deamination tail gas is retrieved and purifier |
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2019
- 2019-02-18 CN CN201920207521.2U patent/CN209752551U/en active Active
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Address after: 529,145 No. 11, Zone A, Lingang Industrial Park, Gujing Town, Xinhui District, Jiangmen City, Guangdong Province (multiple photos of one site) Patentee after: Guangdong Fangyuan New Material Group Co.,Ltd. Address before: 519145 Lingang Industrial Park, Gujing Town, Xinhui District, Jiangmen City, Guangdong Province Patentee before: FANGYUAN ENVIRONMENTAL PROTECTION LTD. |