CN212819085U - Desulfurization oxidation wind centralized control system - Google Patents
Desulfurization oxidation wind centralized control system Download PDFInfo
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- CN212819085U CN212819085U CN202020718085.8U CN202020718085U CN212819085U CN 212819085 U CN212819085 U CN 212819085U CN 202020718085 U CN202020718085 U CN 202020718085U CN 212819085 U CN212819085 U CN 212819085U
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Abstract
The utility model relates to a desulfurization oxidation wind centralized control system, including female pipe (8) of an oxidation wind and two at least units, every unit includes a desulfurization absorption tower (6), an oxidation tuber pipe (4) and at least one oxidation fan (1), the air outlet of each oxidation fan (1) is connected to the oxidation fan (1) of this unit through oxidation tuber pipe (4) of this unit to through the hookup of the desulfurization absorption tower (6) of female pipe (8) of oxidation wind and other units, female pipe of oxidation wind (8) on be equipped with female pipe contact door (9) for switch over oxidation wind source. Compared with the prior art, the utility model discloses can realize the energy-conserving operation of optimizing of centralized control of oxidation wind system, can realize dividing tower flow independent control through dividing tower flow adjusting device simultaneously, the back is closed to the female pipe contact door, also can realize the independent control of each desulfurization absorption tower self, has improved the reliability and the flexibility of system's operation.
Description
Technical Field
The utility model relates to an environmental protection field relates to a flue gas desulfurization system, especially relates to a desulfurization oxidation wind centralized control system.
Background
A wet desulfurizing process for the fume generated by lime stone-gypsum method features that the fume generated by boiler is dedusted by electric duster, then fed to desulfurizing-absorbing tower by booster fan, where it flows upward and lime stone slurry flows downward for washing in counter-current mode to remove SO2、SO3HCl and HF. In the absorption tower, limestone reacts with sulfur dioxide to generate gypsum, meanwhile, byproducts of the reaction are oxidized into gypsum by introduced air, and gypsum slurry is discharged by a gypsum slurry pump and enters a gypsum dehydration system.
The main purpose of injecting oxidizing air into the slurry tank of the absorption tower is to forcibly oxidize calcium sulfite into calcium sulfate, so that on one hand, the continuity of the desulfurization reaction process can be ensured, the desulfurization efficiency is improved, and meanwhile, the quality of desulfurization byproduct gypsum is improved; on the other hand, the scale formation of calcium sulfite in the absorption tower and the limestone slurry tank can be prevented. In order to provide sufficient oxygen, each absorption tower is provided with an independent oxidation air system, oxidation fans are operated by one for one, and the operation reliability of the desulfurization system is influenced under the condition that one oxidation fan fails and is out of service. In addition, under the conditions of unit peak regulation, low load rate, low sulfur content of the fire coal and the like, the independent operation of the oxidation air system causes most of the oxidation air to be wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a desulfurization oxidation air centralized control system.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a desulfurization oxidation wind centralized control system, includes female pipe of an oxidation wind and two at least units, and every unit includes a desulfurization absorption tower, an oxidation tuber pipe and at least one oxidation fan, and the air outlet of each oxidation fan is connected to the desulfurization absorption tower of this unit through the oxidation tuber pipe of this unit to the desulfurization absorption tower hookup through female pipe of oxidation wind and other units, female pipe contact door that is equipped with of oxidation wind female pipe for switch over the oxidation wind source.
And a tower-splitting flow adjusting device is arranged on an oxidation air pipe between the oxidation fan and the desulfurization absorption tower of the unit.
And an oxidizing air pipe between the oxidizing fan and the desulfurization absorption tower of the unit is provided with a tower separation isolation door.
And a flowmeter is arranged on an oxidation air pipe between the oxidation fan and the desulfurization absorption tower of the unit.
And the oxidation air main pipe is provided with a manual isolation shut-off door.
And the desulfurization absorption tower is provided with a pressure transmitter.
And the oxidation air main pipe is provided with a pressure transmitter.
Each unit includes two oxidation fans.
The oxidation air main pipe is provided with an expansion joint.
The expansion joint is a three-way valve.
Compared with the prior art, the utility model has the advantages of it is following:
(1) after the oxidation air main pipe is connected, the centralized control energy-saving optimized operation of an oxidation air system can be realized, the independent adjustment of the tower dividing flow can be realized through the tower dividing flow adjusting device, and after the main pipe connecting door is closed, the independent control of each desulfurization absorption tower can be realized, so that the reliability and the flexibility of the operation of the system are improved.
(2) And a tower-splitting flow adjusting device is arranged on each desulfurization absorption tower oxidation air pipe, and the flow of the oxidation air of each absorption tower can be independently adjusted.
(3) And a flowmeter is arranged on each desulfurization absorption tower oxidation air pipe, so that the flow of oxidation air is monitored on line, and operators can adjust and optimize the operation mode conveniently according to the working conditions.
(4) After two independent desulfurization oxidation air systems are connected through an oxidation air main pipe, the oxidation air blower is changed from one-use one-standby mode to two-use two-standby mode or one-use three-standby mode, the standby utilization rate of the oxidation air blower is improved, and the use and maintenance cost of the air blower is saved.
(5) The desulfurization oxidation air system can be expanded into a plurality of sets as required, and the system and the equipment can be shared through the connection of the oxidation air main pipes, so that the maximum centralized control effect is exerted, the energy-saving potential is great, and the operation reliability of the desulfurization oxidation air system is improved.
(6) Pressure transmitters are arranged on the desulfurization absorption tower and the oxidation air main pipe, so that the condition that the pressure of air blown into the oxidation air pipe in the slurry is greater than the pressure of the liquid level height to the oxidation air main pipe can be met by adjusting the flow of the oxidation air, and the slurry backflow and fan surge are prevented.
(7) Most of the equipment and pipelines of the original independent oxidation air system are reserved, resources are saved, the equipment and the pipelines are convenient and feasible to install, and the popularization is good.
(8) The oxidation wind main pipe is provided with an expansion joint, so that the number of units can be conveniently expanded.
Drawings
FIG. 1 is a schematic view of a centralized control system for desulfurization oxidizing wind in this embodiment;
reference numerals:
1 is an oxidation fan; 2 is a tower flow regulating device; 3 is a flowmeter; 4 is an oxidation air pipe; 5 is a tower separating isolation door; 6 is a desulfurization absorption tower; 7 is a pressure transmitter; 8 is an oxidation air main pipe; 9 is a main pipe communication door; and 10 is a manual isolating shutoff door.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a centralized control system for desulfurization and oxidation air, which includes an oxidation blower 1, a sub-tower flow rate adjusting device 2, a flow meter 3, an oxidation air duct 4, a sub-tower isolation door 5, a desulfurization absorption tower 6, a pressure transmitter 7, an oxidation air main duct 8, a main duct communication door 9 and a manual isolation shutoff door 10, wherein the oxidation blower 1 sucks air, and sends the air into the desulfurization absorption tower 6 through the oxidation air duct 4 to form an independent desulfurization and oxidation air system, the two independent systems are connected through the oxidation air main duct 8, the sub-tower flow rate adjusting device 2, the flow meter 3 and the sub-tower isolation door 5 are installed on the oxidation air duct 4, the main duct communication door 9 and the manual isolation shutoff door 10 are installed on the oxidation air main duct 8, after the oxidation air system is connected through the oxidation air main duct 8, centralized control, energy saving and optimized operation can be realized, and the sub-tower flow rate independent adjustment can be realized, after the main pipe connecting door 9 is closed, the independent control of each desulfurization absorption tower 6 can be realized, and the reliability and the flexibility of the system operation are improved.
Specifically, the method comprises the following steps:
the flow meter 3 can monitor the flow of the oxidation air of each absorption tower on line, and is convenient for operators to adjust and optimize the operation mode according to the working conditions.
After two independent desulfurization oxidation air systems are connected through an oxidation air main pipe 8, an oxidation air fan 1 is changed from one-use one-standby to two-use two-standby or one-use three-standby, and the oxidation air flow of each desulfurization absorption tower 6 is independently adjusted through a tower flow adjusting device 2.
Two sets of independent desulfurization oxidation air systems can be expanded into a plurality of sets according to needs, and the oxidation air main pipes 8 are connected to play the greatest role in energy-saving operation and centralized control.
And pressure transmitters 7 are arranged on the desulfurization absorption tower 6 and the oxidation air main pipe 8, so that the condition that the pressure of air blown into the oxidation air pipe 4 in the slurry is higher than the pressure of the liquid level height to the oxidation air main pipe can be met by adjusting the flow of the oxidation air, and the slurry backflow and fan surge are prevented.
The working method comprises the following steps:
the air passes through the leading-in desulfurization absorption tower 6 of oxidation fan 1, oxidizes the desulfurization thick liquid, and when female pipe contact door 9 and manual shut-off isolation door 10 closed, the oxidation wind system was independent operation mode, and the oxidation fan is used one and is equipped with. When the main pipe contact door 9 and the manual shut-off isolation door 10 are opened, each oxidation air system is communicated through the oxidation air main pipe 8, system equipment is shared, centralized control energy-saving optimized operation is achieved, meanwhile, independent adjustment of tower division flow can be achieved through the tower division flow adjusting device 2, the flow meter 3 is installed on the oxidation air pipe 4 of each desulfurization absorption tower 6, the oxidation air flow is monitored on line, and operating personnel can adjust and optimize the operation mode conveniently according to working conditions. After two independent desulfurization oxidation air systems are connected through the oxidation air main pipe 8, the oxidation air blower 1 is changed from one-use one-standby mode to two-use two-standby mode or one-use three-standby mode, the standby rate of the oxidation air blower 1 is improved, the use and maintenance cost of the air blower is saved, and meanwhile, the reliability and the flexibility of the operation of the system are improved.
Example 2
Different from the embodiment 1, the centralized control system for the desulfurization and oxidation wind in the embodiment comprises three units, and the expansion of the system is realized by adding a three-way valve to the oxidation wind main pipe in the embodiment 1 and respectively connecting each unit with one port of a valve.
Claims (10)
1. The utility model provides a desulfurization oxidation wind centralized control system, its characterized in that includes female pipe of oxidation wind (8) and two at least units, every unit includes a desulfurization absorption tower (6), an oxidation tuber pipe (4) and at least one oxidation fan (1), and the air outlet of each oxidation fan (1) is connected to the desulfurization absorption tower (6) of this unit through oxidation tuber pipe (4) of this unit to through female pipe of oxidation wind (8) with desulfurization absorption tower (6) hookup of other units, female pipe of oxidation wind (8) on be equipped with female pipe and connect door (9) for switch oxidation wind source.
2. The desulfurization and oxidation air centralized control system according to claim 1, characterized in that a tower-splitting flow regulating device (2) is arranged on the oxidation air pipe (4) between the oxidation air blower (1) and the desulfurization absorption tower (6) of the unit.
3. The centralized control system for desulfurization and oxidation wind according to claim 1, characterized in that a tower separation isolating door (5) is arranged on the oxidation wind pipe (4) between the oxidation fan (1) and the desulfurization absorption tower (6) of the unit.
4. The desulfurization and oxidation air centralized control system is characterized in that a flowmeter (3) is arranged on an oxidation air pipe (4) between the oxidation air fan (1) and a desulfurization absorption tower (6) of the unit.
5. A central control system for desulfurization oxidizing air according to claim 1, characterized in that said oxidizing air main pipe (8) is equipped with a manual isolating shut-off gate (10).
6. A desulfurization and oxidation wind centralized control system according to claim 1, characterized in that said desulfurization absorption tower (6) is equipped with a pressure transmitter (7).
7. A central control system for desulfurization oxidizing air according to claim 1, characterized in that said oxidizing air main pipe (8) is equipped with a pressure transmitter (7).
8. A central control system for desulfurization oxidizing air according to claim 1, characterized in that each unit comprises two oxidizing air blowers (1).
9. The centralized control system for desulfurization and oxidation wind according to claim 1, characterized in that an expansion joint is arranged on the oxidation wind main pipe (8).
10. The centralized control system of desulfurization oxidizing air of claim 9, wherein said expansion joint is a three-way valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020718085.8U CN212819085U (en) | 2020-04-30 | 2020-04-30 | Desulfurization oxidation wind centralized control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020718085.8U CN212819085U (en) | 2020-04-30 | 2020-04-30 | Desulfurization oxidation wind centralized control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230847A (en) * | 2021-06-05 | 2021-08-10 | 安徽科力德能源环境科技有限公司 | Automatic centralized monitoring system for wet flue gas desulfurization multi-furnace multi-tower oxidation air volume |
| CN113750772A (en) * | 2021-08-12 | 2021-12-07 | 华能国际电力股份有限公司营口电厂 | Energy-saving system applied to oxidation fan and operation method thereof |
-
2020
- 2020-04-30 CN CN202020718085.8U patent/CN212819085U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230847A (en) * | 2021-06-05 | 2021-08-10 | 安徽科力德能源环境科技有限公司 | Automatic centralized monitoring system for wet flue gas desulfurization multi-furnace multi-tower oxidation air volume |
| CN113750772A (en) * | 2021-08-12 | 2021-12-07 | 华能国际电力股份有限公司营口电厂 | Energy-saving system applied to oxidation fan and operation method thereof |
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