CN220376372U - Combined regulating and controlling device for preparing ammonia water by cross process - Google Patents
Combined regulating and controlling device for preparing ammonia water by cross process Download PDFInfo
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- CN220376372U CN220376372U CN202322215000.0U CN202322215000U CN220376372U CN 220376372 U CN220376372 U CN 220376372U CN 202322215000 U CN202322215000 U CN 202322215000U CN 220376372 U CN220376372 U CN 220376372U
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- ammonia water
- valve group
- liquid level
- pipeline
- pump
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- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 235000011114 ammonium hydroxide Nutrition 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 20
- 230000001276 controlling effect Effects 0.000 title description 5
- 230000001105 regulatory effect Effects 0.000 title description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000005406 washing Methods 0.000 claims abstract description 47
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 13
- 230000023556 desulfurization Effects 0.000 claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 13
- 239000010865 sewage Substances 0.000 claims abstract description 7
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 94
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model provides a combined regulation and control device for preparing ammonia water by a cross process, which belongs to the technical field of chemical equipment and has the structure that a No. 1 valve group is arranged on a desalted water inlet pipeline, and the downstream of the desalted water inlet pipeline is communicated with the top water inlet of an ammonia water tank; the tail gas washing water pipeline at the bottom of the low-temperature methanol washing six-tower is provided with a No. 5 pump, and the No. 5 pump is divided into two paths: one path is connected to a sewage pipeline through a valve group No. 2; the other path is connected to the tail section of the desalted water inlet pipeline through a valve bank manifold No. 3; the tank body of the ammonia water tank is communicated with an air ammonia pipeline arranged at the upstream, a No. 4 valve group is arranged on the air ammonia pipeline, and the air ammonia output of the ice machine is connected with the air ammonia pipeline; the tank bottom of the ammonia water tank is communicated with an ammonia water output pipeline, a No. 6 pump is arranged on the ammonia water output pipeline, and the ammonia water output pipeline is connected with a flue gas desulfurization removal pipeline. The utility model not only reduces the consumption of desalted water prepared by ammonia water and reduces the running cost, but also reduces the decontaminated water amount of tail gas washing water.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, in particular to a combined regulation and control device for preparing ammonia water by a cross process.
Background
Generally, in the chemical production process, when ammonia water is prepared jointly, most of the chemical processes of upstream, downstream and bypass are involved. Along with the popularization of environmental protection and the enhancement of environmental protection consciousness, the flue gas desulfurization is taken as an environmental protection device, the operation stability is particularly important, the ammonia water is taken as an important condition for the stable operation of the flue gas desulfurization, the preparation cost is relatively high, the effect of a process point is also very critical, and the improved device for preparing the ammonia water is provided for reducing the cost and increasing the benefit.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides a combined regulation and control device for preparing cross-process ammonia water.
The technical scheme of the utility model is realized in the following way, the combined regulation and control device for preparing the cross process ammonia water structurally comprises a desalted water inlet pipeline, a tail gas washing water pipeline at the bottom of a low-temperature methanol six-tower, an ice maker and a flue gas desulfurization removing pipeline;
a No. 1 valve group is arranged on the desalted water inlet pipeline, and the downstream of the desalted water inlet pipeline is communicated with the top inlet water of the ammonia water tank;
the tail gas washing water pipeline at the bottom of the low-temperature methanol washing six-tower is provided with a No. 5 pump, and the No. 5 pump is divided into two paths: one path is connected to a sewage pipeline through a valve group No. 2; the other path is connected to the tail section of the desalted water inlet pipeline through a valve bank manifold No. 3;
the tank body of the ammonia water tank is communicated with an air ammonia pipeline arranged at the upstream, a No. 4 valve group is arranged on the air ammonia pipeline, and the air ammonia output of the ice machine is connected with the air ammonia pipeline;
the tank bottom of the ammonia water tank is communicated with an ammonia water output pipeline, a No. 6 pump is arranged on the ammonia water output pipeline, and the ammonia water output pipeline is connected with a flue gas desulfurization removal pipeline.
The valve group 1 is normally closed, the valve group 3 is normally opened, and the valve group 2 is normally adjusted.
The valve group 1, the valve group 2, the valve group 3 and the valve group 4 are all electric control valve groups;
the No. 5 pump and the No. 6 pump are all electric control pumps.
The valve group 1, the valve group 2, the valve group 3, the valve group 4, the pump 5 and the pump 6 are respectively connected to the controller.
The valve group 1 is connected with an ammonia water tank liquid level device through a controller;
the No. 2 valve group is connected with a low-temperature methanol washing six-tower liquid level device through a controller, and is provided with high-level priority control; the low-temperature methanol washing six-tower liquid level device is connected with a No. 3 valve group through a controller, and secondary priority control is set;
the No. 3 valve bank is connected with an ammonia water tank liquid level device through a controller, and three-level priority control is set;
the No. 4 valve bank is related to an ammonia water tank concentration online measuring instrument through a controller;
the No. 5 pump is connected with a low-temperature methanol washing six-tower liquid level device through a controller;
the No. 6 pump is connected with the ammonia water tank liquid level device through the controller.
The system comprises an electric interlocking system composed of a valve group No. 1, a valve group No. 2, a valve group No. 3, a valve group No. 4, a pump No. 5, a pump No. 6, a low-temperature methanol-washing six-tower liquid level device, an ammonia water tank concentration on-line measuring instrument, an ammonia water tank liquid level device and a controller;
the controller is used for electrically controlling the opening, closing and adjusting of the valve group 1, the valve group 2, the valve group 3, the valve group 4, the pump 5 and the pump 6;
the controller monitors the liquid level height of the ammonia water tank liquid level device, the liquid level height of the low-temperature methanol washing six-tower liquid level device and the liquid level height of ammonia water of the ammonia water tank liquid level device in real time on line;
the electrical interlocking system controls the technological parameter interlocking:
stabilizing ammonia water with the liquid level height of 50+/-5% in the ammonia water tank;
the controller monitors that when the liquid level height of the ammonia water tank liquid level device is lower than 20%, a valve group 1 is interlocked to be opened, and desalted water is fed into the ammonia water tank; when the liquid level height of the ammonia water tank liquid level device is higher than 40%, the interlocking valve group 1 is automatically closed;
the controller monitors that the pump No. 5 is interlocked to automatically stop when the liquid level height of the low-temperature methanol washing six-tower liquid level device is lower than 20%, so that the lowest liquid level of the low-temperature methanol washing six-tower is ensured;
the controller monitors that the ammonia water liquid level height of the ammonia water tank liquid level device is lower than 20%, and the pump of the No. 6 pump is stopped to ensure the lowest liquid level of the ammonia water tank;
the controller monitors the ice machine to jump the car and automatically interlocks the closing of the valve group No. 4.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model relates to a combined regulation and control device for preparing ammonia water by a cross process, which utilizes tail gas washing water at the bottom of a low-methane six-tower as ammonia water to prepare water, and simultaneously utilizes desalted water as supplementary water when the tail gas washing water is abnormal. During normal operation, the tail gas washing water and the three-outlet ammonia of the ice machine are used for preparing ammonia water and sending the ammonia water to flue gas desulfurization, and the desalted water is used as supplementary water during abnormal conditions, so that the consumption of the desalted water prepared from the ammonia water is reduced, the operation cost is reduced, the decontaminated water amount of the tail gas washing water is reduced, and the sewage operation cost is reduced.
The combined regulation and control device for preparing the cross process ammonia water has the advantages of reasonable design, simple structure, safety, reliability, convenient use, easy maintenance and good popularization and use values.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a schematic diagram of the structure of the electrical interlock system of the present utility model.
The reference numerals in the drawings denote:
1. valve group 1, valve group 2, valve group 3, valve group 4,
5. no. 5 pump, no. 6 pump,
7. a desalted water supply pipeline, 8, an ammonia water tank, 9, a sewage pipeline, 10, an ammonia gas pipeline, 11 and an ice machine,
12. ammonia water output pipeline, 13, flue gas desulfurization pipeline,
14. the controller is used for controlling the operation of the controller,
15. an ammonia water tank liquid level device, 16, a low-temperature methanol washing six-tower liquid level device, 17, an ammonia water tank concentration on-line measuring instrument,
18. an electrical interlock system is provided which is configured to provide an electrical interlock,
19. and a tail gas washing water pipeline at the bottom of the low-temperature methanol washing six towers, namely 20-temperature methanol washing six towers.
Detailed Description
The following describes the combined regulation and control device for preparing the cross process ammonia water according to the utility model in detail by referring to the attached drawings.
As shown in the attached drawing, the combined regulation and control device for preparing the cross process ammonia water structurally comprises a desalted water inlet pipeline (7), a tail gas washing water pipeline (20) at the bottom of a low-temperature methanol six-tower, an ice maker (11) and a flue gas removal desulfurization pipeline (13);
the desalted water inlet pipeline (7) is provided with a No. 1 valve group (1), and the downstream of the desalted water inlet pipeline (7) is communicated with the top inlet water of the ammonia water tank (8);
the tail gas washing water pipeline (20) at the bottom of the low-temperature methanol washing six-tower is provided with a No. 5 pump (5), and the No. 5 pump (5) is divided into two paths: one path is connected to a sewage pipeline (9) through a valve group 2; the other path is connected to the end section of the desalted water inlet pipeline (7) through the valve group (3);
the tank body of the ammonia tank (8) is communicated with an air ammonia pipeline (10) arranged at the upstream, a No. 4 valve group (4) is arranged on the air ammonia pipeline (10), and the air ammonia output of the ice machine (11) is connected with the air ammonia pipeline (10);
the tank bottom of the ammonia water tank (8) is communicated with an ammonia water output pipeline (12), a No. 6 pump (6) is arranged on the ammonia water output pipeline (12), and the ammonia water output pipeline (12) is connected with a flue gas desulfurization removal pipeline (13).
The valve group 1 (1) is normally closed, the valve group 3 (3) is normally opened, and the valve group 2 (2) is normally adjusted.
The valve group 1, the valve group 2, the valve group 3 and the valve group 4 adopt electric control valve groups;
the No. 5 pump (5) and the No. 6 pump (6) are all electric control pumps.
The valve group 1 (1), the valve group 2 (2), the valve group 3 (3), the valve group 4 (4), the pump 5 (5) and the pump 6 (6) are respectively connected to the controller (14).
The valve group 1 is connected with an ammonia water tank liquid level device (15) through a controller;
the No. 2 valve group is connected with a low-temperature methanol washing six-tower liquid level device (16) through a controller, and is provided with high-level priority control; the low-temperature methanol washing six-tower liquid level device (16) is connected with a valve group No. 3 through a controller, and secondary priority control is set;
the No. 3 valve bank is related to an ammonia water tank liquid level device (15) through a controller, and three-level priority control is set;
the No. 4 valve bank is connected with an ammonia water tank concentration on-line measuring instrument (17) through a controller;
the No. 5 pump is connected with a low-temperature methanol washing six-tower liquid level device (16) through a controller;
the No. 6 pump is connected with an ammonia water tank liquid level device (15) through a controller.
The electric interlocking system (18) is formed by a valve group 1, a valve group 2, a valve group 3, a valve group 4, a pump 5, a pump 6, a low-temperature methanol-washing six-tower liquid level device, an ammonia water tank concentration on-line measuring instrument, an ammonia water tank liquid level device and a controller;
the controller (14) is used for electrically controlling the opening, closing and adjusting of the valve group 1, the valve group 2, the valve group 3, the valve group 4, the pump 5 and the pump 6;
the controller monitors the liquid level height of the ammonia water tank liquid level device, the liquid level height of the low-temperature methanol washing six-tower liquid level device and the liquid level height of ammonia water of the ammonia water tank liquid level device in real time on line;
the electrical interlocking system controls the technological parameter interlocking:
stabilizing ammonia water with the liquid level height of 50+/-5% in the ammonia water tank;
the controller monitors that when the liquid level height of the ammonia water tank liquid level device is lower than 20%, a valve group 1 is interlocked to be opened, and desalted water is fed into the ammonia water tank; when the liquid level height of the ammonia water tank liquid level device is higher than 40%, the interlocking valve group 1 is automatically closed;
the controller monitors that the pump No. 5 is interlocked to automatically stop when the liquid level height of the low-temperature methanol washing six-tower liquid level device is lower than 20%, so that the lowest liquid level of the low-temperature methanol washing six-tower is ensured;
the controller monitors that the ammonia water liquid level height of the ammonia water tank liquid level device is lower than 20%, and the pump of the No. 6 pump is stopped to ensure the lowest liquid level of the ammonia water tank;
the controller monitors the ice machine to jump the car and automatically interlocks the closing of the valve group No. 4.
The ammonia water tank liquid level device and the low-temperature methanol washing six-tower liquid level device are all liquid level sensors, and the ammonia water tank concentration on-line measuring instrument is a concentration electrode sensor.
The utility model relates to a combined regulation and control device for preparing ammonia water by a cross process, which utilizes tail gas washing water at the bottom of a low-methane six-tower as ammonia water to prepare water, and simultaneously utilizes desalted water as supplementary water when the tail gas washing water is abnormal.
During normal operation, tail gas washing water and three-outlet ammonia of the ice maker are used for preparing ammonia water to be sent to flue gas desulfurization for use.
The desalted water is used as the supplementing water under abnormal conditions, so that the consumption of the desalted water prepared from the ammonia water is reduced, the running cost is reduced, the decontaminated water amount of the tail gas washing water is reduced, and the running cost of sewage is reduced.
And when the ammonia water preparation is operated normally, the valve group No. 1 is closed, the valve group No. 3 is opened, and meanwhile, the valve group No. 2 is adjusted at any time according to the water consumption for preparing the ammonia water, so that the stable liquid level of the ammonia water tank and the low-methyl six-tower is ensured.
Control loop:
(1) And the opening of the valve is adjusted according to the liquid level of the water tank of the No. 3 valve bank Guan Lianan.
(2) The valve group No. 2 is related to the low-methyl six-tower liquid level, priority control is set, the opening of the valve is timely adjusted according to the change of the low-methyl six-tower liquid level, if the low-methyl six-tower liquid level cannot be maintained, the valve group No. 3 is related to be gradually closed to stabilize the liquid level, and the control of the low-methyl six-tower liquid level to the valve group No. 3 is higher than the control of the ammonia tank liquid level to the valve group No. 3.
(3) The desulfurization ammonia water amount of the externally sent flue gas is ensured by adjusting the frequency conversion of the No. 6 pump.
(4) And adjusting the concentration of ammonia water through a valve group No. 4.
The interlocking system adopts process parameter interlocking, and causes interlocking action according to preset process system parameter out-of-limit (interlocking value).
The interlocking process content of the interlocking system is as follows:
(1) The liquid level of the ammonia water tank is normally controlled to be about 50%, the valve group 1 which is lower than 20% and interlocked is opened is arranged, desalted water is supplemented to stabilize the liquid level of the ammonia water tank, and the valve group 1 which is higher than 40% and interlocked is automatically closed.
(2) And setting the liquid level of the low-grade six-tower to be lower than 20%, and interlocking a No. 5 pump to stop automatically so as to ensure the lowest liquid level of the low-grade six-tower.
(3) Setting the liquid level of the ammonia water tank to be lower than 20%, and stopping the pump by interlocking the No. 6 pump to ensure the lowest liquid level of the ammonia water tank.
(4) And setting the automatic interlocking valve group 4 of the ice machine skip to close.
The utility model utilizes the interlocking system, can obtain process improvement in the ammonia water preparation of the cross process, can effectively utilize products and byproducts of the upstream and downstream processes and the bypass process, reduces emission pollution, effectively utilizes the products and byproducts of the process, and improves the environmental protection effect.
Claims (6)
1. The combined regulation and control device for preparing the ammonia water by the cross process is characterized by comprising a desalted water incoming pipeline, a tail gas washing water pipeline at the bottom of a low-temperature methanol washing six-tower, an ice maker and a flue gas desulfurization removal pipeline;
a No. 1 valve group is arranged on the desalted water inlet pipeline, and the downstream of the desalted water inlet pipeline is communicated with the top inlet water of the ammonia water tank;
the tail gas washing water pipeline at the bottom of the low-temperature methanol washing six-tower is provided with a No. 5 pump, and the No. 5 pump is divided into two paths: one path is connected to a sewage pipeline through a valve group No. 2; the other path is connected to the tail section of the desalted water inlet pipeline through a valve bank manifold No. 3;
the tank body of the ammonia water tank is communicated with an air ammonia pipeline arranged at the upstream, a No. 4 valve group is arranged on the air ammonia pipeline, and the air ammonia output of the ice machine is connected with the air ammonia pipeline;
the tank bottom of the ammonia water tank is communicated with an ammonia water output pipeline, a No. 6 pump is arranged on the ammonia water output pipeline, and the ammonia water output pipeline is connected with a flue gas desulfurization removal pipeline.
2. The joint control device for preparing cross-process ammonia water according to claim 1, wherein:
the valve group 1 is normally closed, the valve group 3 is normally opened, and the valve group 2 is normally adjusted.
3. The joint control device for preparing cross-process ammonia water according to claim 1, wherein:
the valve group 1, the valve group 2, the valve group 3 and the valve group 4 are all electric control valve groups;
the No. 5 pump and the No. 6 pump are all electric control pumps.
4. A joint control device for cross-process ammonia water production according to claim 3, wherein: the valve group 1, the valve group 2, the valve group 3, the valve group 4, the pump 5 and the pump 6 are respectively connected to the controller.
5. The joint control device for preparing cross-process ammonia water according to claim 4, wherein:
the valve group 1 is connected with an ammonia water tank liquid level device through a controller;
the No. 2 valve group is connected with a low-temperature methanol washing six-tower liquid level device through a controller, and is provided with high-level priority control; the low-temperature methanol washing six-tower liquid level device is connected with a No. 3 valve group through a controller, and secondary priority control is set;
the No. 3 valve bank is connected with an ammonia water tank liquid level device through a controller, and three-level priority control is set;
the No. 4 valve bank is related to an ammonia water tank concentration online measuring instrument through a controller;
the No. 5 pump is connected with a low-temperature methanol washing six-tower liquid level device through a controller;
the No. 6 pump is connected with the ammonia water tank liquid level device through the controller.
6. The joint control device for preparing cross-process ammonia water according to claim 5, wherein: the system comprises an electric interlocking system composed of a valve group No. 1, a valve group No. 2, a valve group No. 3, a valve group No. 4, a pump No. 5, a pump No. 6, a low-temperature methanol-washing six-tower liquid level device, an ammonia water tank concentration on-line measuring instrument, an ammonia water tank liquid level device and a controller;
the controller is used for electrically controlling the opening, closing and adjusting of the valve group 1, the valve group 2, the valve group 3, the valve group 4, the pump 5 and the pump 6;
the controller monitors the liquid level height of the ammonia water tank liquid level device, the liquid level height of the low-temperature methanol washing six-tower liquid level device and the liquid level height of ammonia water of the ammonia water tank liquid level device in real time on line;
the electrical interlocking system controls the technological parameter interlocking:
stabilizing ammonia water with the liquid level height of 50+/-5% in the ammonia water tank;
the controller monitors that when the liquid level height of the ammonia water tank liquid level device is lower than 20%, a valve group 1 is interlocked to be opened, and desalted water is fed into the ammonia water tank; when the liquid level height of the ammonia water tank liquid level device is higher than 40%, the interlocking valve group 1 is automatically closed;
the controller monitors that the pump No. 5 is interlocked to automatically stop when the liquid level height of the low-temperature methanol washing six-tower liquid level device is lower than 20%, so that the lowest liquid level of the low-temperature methanol washing six-tower is ensured;
the controller monitors that the ammonia water liquid level height of the ammonia water tank liquid level device is lower than 20%, and the pump of the No. 6 pump is stopped to ensure the lowest liquid level of the ammonia water tank;
the controller monitors the ice machine to jump the car and automatically interlocks the closing of the valve group No. 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322215000.0U CN220376372U (en) | 2023-08-17 | 2023-08-17 | Combined regulating and controlling device for preparing ammonia water by cross process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322215000.0U CN220376372U (en) | 2023-08-17 | 2023-08-17 | Combined regulating and controlling device for preparing ammonia water by cross process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220376372U true CN220376372U (en) | 2024-01-23 |
Family
ID=89569147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322215000.0U Active CN220376372U (en) | 2023-08-17 | 2023-08-17 | Combined regulating and controlling device for preparing ammonia water by cross process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220376372U (en) |
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2023
- 2023-08-17 CN CN202322215000.0U patent/CN220376372U/en active Active
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