CN220412900U - Dry absorption acid-stringing system with diffuse groove preventing function - Google Patents
Dry absorption acid-stringing system with diffuse groove preventing function Download PDFInfo
- Publication number
- CN220412900U CN220412900U CN202320183040.9U CN202320183040U CN220412900U CN 220412900 U CN220412900 U CN 220412900U CN 202320183040 U CN202320183040 U CN 202320183040U CN 220412900 U CN220412900 U CN 220412900U
- Authority
- CN
- China
- Prior art keywords
- valve
- pipeline
- circulation
- suction
- circulation tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 60
- 238000001035 drying Methods 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 239000002253 acid Substances 0.000 claims description 58
- 238000009792 diffusion process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a dry absorption acid-stringing system with a diffusion-preventing groove function, which comprises a drying tower, a first absorption tower, a second absorption tower, a drying circulation groove, a first absorption circulation groove and a second absorption circulation groove, wherein a first pipeline is arranged on the drying circulation groove, a drying circulation pump and a first valve are arranged on the first pipeline, and a first circulation pipeline communicated with the drying tower is connected to the first pipeline; a second pipeline is arranged on the first suction circulation groove, a suction circulation pump and a second valve are arranged on the second pipeline, and the second pipeline is connected with a second circulation pipeline; the second suction circulation tank is provided with a third pipeline communicated with the drying circulation tank, the third pipeline is provided with a second suction circulation pump and a third valve, and the third pipeline is connected with a third circulation pipeline and a liquid outlet pipeline which are communicated with the second suction tower; the first valve, the second valve and the third valve are all electric control valves provided with control elements, and the first valve, the second valve and the third valve are respectively connected with a first suction circulating pump, a second suction circulating pump and a drying circulating pump in sequence through signals.
Description
Technical Field
The utility model belongs to the technical field of sulfuric acid production, and particularly relates to a dry absorption acid stringing system with a diffuse groove preventing function.
Background
In the dry absorption process of the sulfuric acid production system, a drying tower adopts concentrated sulfuric acid with the concentration of 93.5-96% to dry and dehydrate wet flue gas; the first absorption tower and the second absorption tower absorb SO3 from the flue gas converted by the conversion process by adopting concentrated sulfuric acid with the concentration of 98-98.5 percent. The concentration of the dry circulating acid is reduced after the water is absorbed, and high-concentration sulfuric acid is needed to be supplemented for concentration; the concentration of the absorption circulating acid increases after the absorption of SO3, and the concentration of sulfuric acid needs to be adjusted downwards by supplementing water. After the liquid level of the dry suction circulation tank rises, external acid is required to be mixed so as to maintain the relatively stable production liquid level of each circulation tank. Therefore, in order to maintain the concentration of the drying and absorption recycle acid and the safe production level of each recycle tank, acid must be strung between the tanks.
The dry acid absorption serial acid mode adopted by each sulfuric acid plant only considers the maintenance of acid concentration and liquid level under normal production conditions. The liquid level control is performed in the following manner: the liquid level of the circulating tank is detected, and the opening of the outward acid-stringing valve of the circulating tank is adjusted according to the liquid level of the circulating tank so as to adjust the outward acid-stringing amount of the circulating tank and maintain the relative stability of the liquid level of the circulating tank.
In the above control method, the amount of acid transferred from the circulation tank to the external circulation tank is controlled, and the amount of acid transferred from the external to the circulation tank cannot be controlled. The control of the amount of the circulation tank to be fed to the external circulation tank requires the normal operation of the circulation pump of the circulation tank as a precondition. When the circulating pump of the circulating tank is in fault and is stopped, the liquid level of the circulating tank cannot be controlled in the mode. Therefore, in this case, the accident of the overflow tank caused by the abrupt increase of the liquid level of the circulation tank is extremely easy to occur, and the potential safety hazard is large.
Disclosure of Invention
The utility model provides a dry absorption acid-stringing system with a diffuse groove preventing function, which is stable in operation and reduces potential safety hazards, in order to overcome the defects of the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the dry absorption acid-stringing system with the function of preventing the diffusion tank comprises a drying tower, a first absorption tower, a second absorption tower, a drying circulation tank, a first absorption circulation tank and a second absorption circulation tank, wherein an outlet of the drying tower is communicated with the drying circulation tank, an outlet of the first absorption tower is communicated with the first absorption circulation tank, and an outlet of the second absorption tower is communicated with the second absorption circulation tank; the drying circulation tank is provided with a first pipeline communicated with the primary suction circulation tank, a drying circulation pump and a first valve are installed on the first pipeline, and the first pipeline is connected with a first circulation pipeline communicated with the drying tower;
the first suction circulation tank is provided with a second pipeline communicated with the second suction circulation tank, a first suction circulation pump and a second valve are installed on the second pipeline, and the second pipeline is connected with a second circulation pipeline communicated with the first suction tower;
the second suction circulation tank is provided with a third pipeline communicated with the drying circulation tank, the third pipeline is provided with a second suction circulation pump and a third valve, and the third pipeline is connected with a third circulation pipeline communicated with the second suction tower and a liquid outlet pipeline for liquid outlet;
the first valve, the second valve and the third valve are all electric control valves provided with control elements, and the first valve, the second valve and the third valve are respectively connected with the primary suction circulating pump, the secondary suction circulating pump and the drying circulating pump in sequence through signals.
Preferably, liquid level sensors for detecting the liquid level in the tank are arranged in the drying circulation tank, the first suction circulation tank and the second suction circulation tank, and the first valve, the second valve and the third valve are connected with the liquid level sensors in the drying circulation tank, the first suction circulation tank and the second suction circulation tank in a one-to-one signal mode respectively.
Preferably, the first valve, the second valve and the third valve are all instrument control type regulating valves.
Preferably, a concentration sensor for detecting the concentration of the acid is arranged in the two-suction circulation tank.
Preferably, an acid generating valve is installed on the liquid outlet pipeline, and the acid generating valve is in signal connection with the concentration sensor.
Preferably, the acid producing valve is a meter-controlled regulating valve.
The utility model has the technical effects that: through the structural arrangement of the system, the liquid level of the circulating tank is taken as a control object, and the opening of an outward acid-stringing valve of the circulating tank is adjusted according to the liquid level of the circulating tank so as to adjust the outward acid-stringing amount of the circulating tank, so that the liquid level of the circulating tank is relatively stable; meanwhile, each acid-stringing valve is additionally linked with the running signal of the motor of the circulating pump of the target tank, when the fault of the circulating pump of the acid-stringing target tank stops, the acid-stringing valve of acid-stringing to the target tank is automatically and emergently linked to be closed, and the transmission of external sulfuric acid is cut off, so that the acid-scattering of the full tank of the target tank is avoided, the acid-scattering accident of the circulating tank when the fault of the dry suction circulating pump stops can be effectively prevented, and the environmental pollution caused by the acid scattering is avoided.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
The reference numerals of the main technical characteristics in the drawings are as follows: 1. a drying tower; 2. a suction tower; 3. a second absorption tower; 4. a drying circulation tank; 5. a suction circulation tank; 6. a secondary suction circulation tank; 71. an air inlet; 72. a liquid return port; 73. an air outlet; 811. a first pipe; 812. a drying circulation pump; 813. a first valve; 814. a first circulation pipe; 821. a second pipe; 822. a suction circulation pump; 823. a second valve; 824. a second circulation pipe; 831. a third conduit; 832. a secondary suction circulation pump; 833. a third valve; 834. a third circulation pipe; 835. a liquid outlet pipe; 836. an acid producing valve.
Description of the embodiments
The utility model is further illustrated by the following detailed description and the accompanying drawings.
Referring to fig. 1, a dry acid-stringing absorption system with a diffusion-preventing groove function comprises a drying tower 1, a first absorption tower 2, a second absorption tower 3, a drying circulation groove 4, a first absorption circulation groove 5 and a second absorption circulation groove 6, wherein an outlet of the drying tower 1 is communicated with the drying circulation groove 4, an outlet of the first absorption tower 2 is communicated with the first absorption circulation groove 5, and an outlet of the second absorption tower 3 is communicated with the second absorption circulation groove 6.
Further, the side walls of the drying tower 1, the first suction tower 2 and the second suction tower 3 close to the bottom are provided with air inlets 71, the side walls of the drying tower 1, the first suction tower 2 and the second suction tower 3 close to the top are provided with liquid return ports 72, and the tops of the drying tower 1, the first suction tower 2 and the second suction tower 3 are provided with air outlets 73.
Further, a first pipe 811 is connected to the drying circulation tank 4, one end of the first pipe 811 is connected to the suction circulation tank 5, and a drying circulation pump 812 is installed at the other end; the first pipe 811 is further provided with a first valve 813, and a first circulation pipe 814 is connected thereto, and one end of the first circulation pipe 814 is connected to the liquid return port 72 of the drying tower 1.
Further, a second pipeline 821 is connected to the first suction circulation tank 5, one end of the second pipeline 821 is communicated with the second suction circulation tank 6, and a suction circulation pump 822 is installed at the other end of the second pipeline 821; the second pipe 821 is further provided with a second valve 823, and a second circulation pipe 824 is connected thereto, and one end of the second circulation pipe 824 is connected to the liquid return port 72 of the first suction tower 2.
Further, a third pipeline 831 is connected to the second suction circulation tank 6, one end of the third pipeline 831 is communicated with the drying circulation tank 4, and a second suction circulation pump 832 is installed at the other end of the third pipeline 831; the third pipeline 831 is further provided with a third valve 833, and is connected with a third circulation pipeline 834 and a liquid outlet pipeline 835, and one end of the third circulation pipeline 834 is connected to the liquid return port 72 of the second absorption tower 3.
Specifically, the first valve 813, the second valve 823 and the third valve 833 are all electric control valves with control elements, and the electric control valves are in the prior art and are instrument control type regulating valves, and can be directly and independently installed or externally connected with a PLC control system to perform independent signal control. The control elements on the first valve 813, the second valve 823 and the third valve 833 are sequentially connected with the motors of the primary suction circulation pump 822, the secondary suction circulation pump 832 and the drying circulation pump 812 respectively, so that the opening and closing of the corresponding valves can be controlled according to the feedback of the motor operation signals in the corresponding pumps.
Further, liquid level sensors are installed in the drying circulation tank 4, the primary suction circulation tank 5 and the secondary suction circulation tank 6, and the liquid level sensors are in the prior art and are used for monitoring the liquid level in the corresponding circulation tank in real time; the control elements of the first valve 813, the second valve 823 and the third valve 833 are sequentially connected with the liquid level sensors in the drying circulation tank 4, the first suction circulation tank 5 and the second suction circulation tank 6 in a one-to-one signal manner, and the opening degrees of the corresponding valves can be controlled according to the signal output of the corresponding liquid level sensors.
Further, a concentration sensor is installed in the two-suction circulation tank 6, and the concentration sensor is a sulfuric acid concentration meter commonly used in the prior art; the liquid outlet pipeline 835 is provided with an acid generating valve 836, the acid generating valve 836 is a prior art, is a meter-controlled regulating valve, and can be directly and independently installed or externally connected with a PLC control system for independent signal control; the acid valve 836 is in signal communication with the concentration sensor.
The specific implementation process of the utility model is as follows:
during normal production:
the machine comprises the following steps: during normal production, a control element connected with the first valve controls the opening of the first valve according to signals sent by a liquid level sensor in the drying circulation valve in real time; the first valve is opened automatically according to the liquid level of the drying circulation tank 4, when the liquid level of the drying circulation tank 4 is higher than a set value, the opening of the first valve is increased, and the acid quantity of the drying circulation tank 4 to the primary absorption circulation tank 5 is increased, so that the liquid level of the drying circulation tank 4 is reduced. When the liquid level of the drying circulation tank 4 is lower, the opening of the first valve is automatically closed, and the acid quantity of the drying circulation tank 4 to the primary absorption circulation tank 5 is reduced, so that the liquid level of the drying circulation tank 4 is improved.
The circulation groove 5 is inhaled to one: during normal production, a control element connected with the second valve controls the opening of the second valve according to the signal sent by a liquid level sensor in the suction and circulation tank 5; the second valve is opened automatically according to the liquid level of the first suction and circulation tank 5, when the liquid level of the first suction and circulation tank 5 is higher than a set value, the opening of the second valve is increased, and the acid quantity of the first suction and circulation tank 5 to the second suction and circulation tank 6 is increased, so that the liquid level of the first suction and circulation tank 5 is reduced. When the liquid level of the first suction and circulation tank 5 is lower, the opening of the second valve is automatically closed, and the acid quantity of the first suction and circulation tank 5 to the second suction and circulation tank 6 is reduced, so that the liquid level of the first suction and circulation tank 5 is improved.
Third, two inhale circulation groove 6:
(1) during normal production, a control element connected with the acid producing valve 836 controls the opening of the acid producing valve 836 according to the signal sent by the concentration sensor in the two-suction circulation tank 6; the acid generating valve 836 is automatically turned off when the concentration of the drying circulating acid is higher than a set value according to the concentration of the drying circulating acid, so that the opening degree of the acid generating valve 836 is automatically turned off, and the acid quantity of the two-suction circulating tank 6 to the drying circulating tank 4 is reduced, so that the concentration of the drying circulating acid is reduced. When the concentration of the drying cycle acid is lower than the set value, the opening of the acid generating valve 836 is automatically increased, and the acid quantity of the two-suction circulation tank 6 to the drying circulation tank 4 is increased, so that the concentration of the drying cycle acid is increased.
(2) During normal production, the control element connected with the third valve controls the opening of the third valve according to the signals sent by the liquid level sensor in the two-suction circulation tank 6; the control element connected with the third valve controls the opening of the third valve according to the signals sent by the liquid level sensor in the secondary absorption circulating tank 6; the opening degree of the secondary acid-producing valve 836 is automatically increased according to the liquid level of the secondary absorption circulation tank 6 when the liquid level of the secondary absorption circulation tank 6 is higher than a set value, so as to increase the acid production amount of the secondary absorption circulation tank 6 to the outside and reduce the liquid level of the secondary absorption circulation tank 6. When the liquid level of the secondary absorption and circulation tank 6 is low, the opening of the secondary absorption and acid production valve 836 is automatically closed, so that the acid production amount of the secondary absorption and circulation tank 6 to the outside is reduced, and the liquid level of the secondary absorption and circulation tank 6 is improved.
When the dry suction pump fails, the following steps are:
the machine comprises the following steps of: the third valve is automatically interlocked and closed in emergency according to the operation signal condition of the motor of the drying circulating pump 812. At the moment, the secondary absorption circulation tank 6 stops acid from being mixed into the drying circulation tank 4, so that the full tank acid diffusion of the drying circulation tank 4 is avoided.
Secondly, when the pump is stopped due to the failure of the primary suction circulating pump 822: the first valve is automatically interlocked with emergency closing by the operation signal condition of the motor of the suction circulation pump 822. At the moment, the drying circulation tank 4 stops acid from being mixed into the one-suction circulation tank 5, so that the acid diffusion of the full tank of the one-suction circulation tank 5 is avoided.
Third, when two inhale circulation pump 832 trouble shut down the pump: the second valve is automatically and emergently closed by the operation signal condition of the motor of the two-suction circulating pump 832. At the moment, the first suction and circulation tank 5 stops acid from being mixed into the second suction and circulation tank 6, so that the acid diffusion of the full tank of the second suction and circulation tank 6 is avoided.
The above embodiments are merely examples of the present utility model, but the present utility model is not limited thereto, and the present utility model may be applied to similar products, and any person skilled in the art who is skilled in the field of the present utility model shall make changes or modifications within the scope of the present utility model.
Claims (5)
1. The dry absorption acid stringing system with the function of preventing a diffusion tank comprises a drying tower (1), a first absorption tower (2), a second absorption tower (3), a drying circulation tank (4), a first absorption circulation tank (5) and a second absorption circulation tank (6), wherein an outlet of the drying tower (1) is communicated with the drying circulation tank (4), an outlet of the first absorption tower (2) is communicated with the first absorption circulation tank (5), and an outlet of the second absorption tower (3) is communicated with the second absorption circulation tank (6); the method is characterized in that:
the drying circulation tank (4) is provided with a first pipeline (811) communicated with the primary suction circulation tank (5), the first pipeline (811) is provided with a drying circulation pump (812) and a first valve (813), and the first pipeline (811) is connected with a first circulation pipeline (814) communicated with the drying tower (1);
a second pipeline (821) communicated with the second suction circulation tank (6) is arranged on the first suction circulation tank (5), a first suction circulation pump (822) and a second valve (823) are arranged on the second pipeline (821), and a second circulation pipeline (824) communicated with the first suction tower (2) is connected to the second pipeline (821);
a third pipeline (831) communicated with the drying circulation tank (4) is arranged on the secondary absorption circulation tank (6), a secondary absorption circulation pump (832) and a third valve (833) are arranged on the third pipeline (831), and a third circulation pipeline (834) communicated with the secondary absorption tower (3) and a liquid outlet pipeline (835) for liquid outlet are connected on the third pipeline (831);
the first valve (813), the second valve (823) and the third valve (833) are all electric control valves provided with control elements, and are sequentially connected with the primary suction circulating pump (822), the secondary suction circulating pump (832) and the drying circulating pump (812) in a signal mode;
liquid level sensors for detecting liquid levels in the tanks are arranged in the drying circulation tank (4), the first suction circulation tank (5) and the second suction circulation tank (6), and the first valve (813), the second valve (823) and the third valve (833) are sequentially connected with the liquid level sensors in the drying circulation tank (4), the first suction circulation tank (5) and the second suction circulation tank (6) in a one-to-one signal mode.
2. The dry absorbing acid stringing system with the function of preventing a diffusion tank according to claim 1, wherein the dry absorbing acid stringing system is characterized in that: the first valve (813), the second valve (823) and the third valve (833) are all instrument control regulating valves.
3. The dry absorbing acid stringing system with the function of preventing a diffusion tank according to claim 1, wherein the dry absorbing acid stringing system is characterized in that: a concentration sensor for detecting the concentration of acid is arranged in the two-suction circulation tank (6).
4. A dry absorbing acid stringing system with a diffuse groove preventing function according to claim 3, wherein: an acid valve (836) is mounted on the liquid outlet pipeline (835), and the acid valve (836) is in signal connection with the concentration sensor.
5. The dry absorbing acid stringing system with the function of preventing a diffusion tank according to claim 4, wherein the dry absorbing acid stringing system is characterized in that: the acid producing valve (836) is a pilot operated regulator valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320183040.9U CN220412900U (en) | 2023-02-10 | 2023-02-10 | Dry absorption acid-stringing system with diffuse groove preventing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320183040.9U CN220412900U (en) | 2023-02-10 | 2023-02-10 | Dry absorption acid-stringing system with diffuse groove preventing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220412900U true CN220412900U (en) | 2024-01-30 |
Family
ID=89649672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320183040.9U Active CN220412900U (en) | 2023-02-10 | 2023-02-10 | Dry absorption acid-stringing system with diffuse groove preventing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220412900U (en) |
-
2023
- 2023-02-10 CN CN202320183040.9U patent/CN220412900U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108194151A (en) | A kind of turbine shaft gland sealing steam supply regulating device and method | |
| CN220412900U (en) | Dry absorption acid-stringing system with diffuse groove preventing function | |
| CN105749729A (en) | Ammonification system based on automatic-adjusted pH value | |
| CN111408243B (en) | Wet desulfurization pH value control system and method for thermal power generating unit | |
| CN205402675U (en) | Small -size boiler water supplement structure | |
| CN108728862A (en) | A kind of method that online hydrogen making machine is arranged in hydrogen station | |
| CN112031967A (en) | Fuel supply equipment and fuel supply method for offshore platform | |
| CN116377511A (en) | Self-adaptive gas production regulation control system of hydrogen production device | |
| CN205650071U (en) | Automatically regulated adds ammonia system based on pH value | |
| CN206669333U (en) | A kind of biogas cooperates with air supply system with municipal natural gas | |
| CN214457020U (en) | Mixed ion exchange resin double-chamber type separation device | |
| CN209585161U (en) | A kind of ladder water system | |
| CN220376372U (en) | Combined regulating and controlling device for preparing ammonia water by cross process | |
| CN206531050U (en) | Synthesize the ammonia feed water system of boiler and synthetic ammonia installation | |
| CN220034052U (en) | Dry suction device suitable for large sulfuric acid system | |
| CN113217443A (en) | Main pipe energy-saving device and method of centrifugal desulfurization oxidation fan | |
| CN206199002U (en) | A kind of desulfuration absorbing tower serum recycle system | |
| CN217449596U (en) | Control device for adding synergist of desulfurizing tower | |
| CN211778136U (en) | Main pipe energy-saving device of centrifugal desulfurization oxidation fan | |
| CN217329762U (en) | Feed water recirculation valve protection system | |
| CN216755955U (en) | Liquid level control system of chlorine-containing gas alkaline washing tank | |
| CN216726606U (en) | Desulfurization oxidation device with centralized arrangement | |
| CN219355842U (en) | Wet desulfurization slurry supply system for two same type thermal power generating units | |
| CN219572220U (en) | Constant-pressure water supplementing and exhausting device with water supplementing linkage | |
| CN220345469U (en) | Limestone slurry supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |