CN111214935A - Limestone slurry supply system - Google Patents
Limestone slurry supply system Download PDFInfo
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- CN111214935A CN111214935A CN201911087694.6A CN201911087694A CN111214935A CN 111214935 A CN111214935 A CN 111214935A CN 201911087694 A CN201911087694 A CN 201911087694A CN 111214935 A CN111214935 A CN 111214935A
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- limestone slurry
- pipe
- supply system
- main flow
- slurry supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model provides a limestone slurry feed system, including the thick liquid case that has output tube and back flow, first main flow pipe, the second main flow pipe, the thick liquid pump, a control device, the desulfurizing tower, link to each other through first main flow pipe between the inlet of output tube on the thick liquid case and thick liquid pump, link to each other through the second main flow pipe between the liquid outlet of back flow on the thick liquid case and thick liquid pump, outwards extend on the second main flow pipe and have a plurality of shunt tubes, the desulfurizing tower is connected respectively to every shunt tube, all be provided with flow control valve and liquid flowmeter on every shunt tube, flow control valve is connected with the control device electricity. In the invention, limestone slurry is stored in the slurry tank and pumped into each desulfurizing tower through the slurry pump, thereby realizing the purpose of supplying limestone slurry to a plurality of desulfurizing towers simultaneously. The flow control valve can adjust the flow on each shunt tube, so that the limestone slurry flow entering each desulfurizing tower is the same, and the uniformity of limestone slurry supply is improved.
Description
Technical Field
The invention relates to the technical field of flue gas desulfurization, in particular to a limestone slurry supply system.
Background
Among the flue gas desulfurization methods of thermal power plants, the limestone-gypsum flue gas desulfurization method is a widely used desulfurization method at present. The desulfurization method is characterized in that the limestone slurry is supplied into the desulfurization tower, sulfur dioxide gas in the flue gas and the limestone slurry in the desulfurization tower are subjected to chemical reaction, finally gypsum is generated and discharged, the sulfur dioxide gas in the flue gas is effectively removed, the desulfurization effect is achieved, and the standard emission of sulfur dioxide is reduced. The core of the desulfurization device is a limestone slurry supply system, the limestone slurry supply system comprises a desulfurization tower, a slurry tank and a slurry pump, limestone slurry is stored in the slurry tank, and the limestone slurry in the slurry tank is pumped into the desulfurization tower through the slurry pump. The existing limestone slurry supply system can only supply limestone slurry to one desulfurizing tower, cannot simultaneously supply limestone slurry to a plurality of desulfurizing towers, and has a single supply mode.
Disclosure of Invention
The present invention has been made to solve the problem that the conventional limestone slurry supply system can supply only limestone slurry to one desulfurization tower and has a single supply method, and an object of the present invention is to provide a limestone slurry supply system capable of effectively solving the above problem.
The purpose of the invention is realized by the following technical scheme: the utility model provides a limestone slurry feed system, including the thick liquid case that has output tube and back flow, first main flow pipe, the second main flow pipe, the thick liquid pump, a control device, the desulfurizing tower, link to each other through first main flow pipe between the inlet of output tube on the thick liquid case and thick liquid pump, link to each other through the second main flow pipe between the liquid outlet of back flow on the thick liquid case and thick liquid pump, outwards extend on the second main flow pipe and have a plurality of shunt tubes, the desulfurizing tower is connected respectively to every shunt tube, all be provided with flow control valve and liquid flowmeter on every shunt tube, flow control valve is connected with the control device electricity.
In the invention, limestone slurry is stored in the slurry tank and pumped into each desulfurizing tower through the slurry pump, thereby realizing the purpose of supplying limestone slurry to a plurality of desulfurizing towers simultaneously. The flow control valve can adjust the flow on each shunt tube, so that the limestone slurry flow entering each desulfurizing tower is the same, and the uniformity of limestone slurry supply is improved. The liquid flowmeter can measure the slurry flow on each shunt tube, thereby realizing the monitoring of the flow condition of each shunt tube.
Preferably, the first main flow pipe is provided with an on-off valve. The on-off valve plays a role in opening and closing, when the on-off valve is opened, limestone slurry can be pumped into each desulfurizing tower under the action of the slurry pump, and the supply system is started. After the on-off valve is closed, the supply of the limestone slurry to each of the desulfurizing towers is stopped, and the supply system is closed.
Preferably, a flow meter is provided in the second main flow pipe. The flow meter is capable of displaying the flow of the stock solution in the second main flow pipe.
Preferably, the slurry tank comprises a tank body, a motor and a rotating shaft which is rotatably connected to the tank body and is driven by the motor to rotate, the rotating shaft extends into the tank body, a plurality of stirring rods are arranged on the rotating shaft, the stirring rods are fixed on the rotating shaft through connecting columns, a first liquid channel is arranged in the rotating shaft, a second liquid channel is arranged in the connecting columns, a third liquid channel is arranged in each stirring rod, the second liquid channel is respectively communicated with the first liquid channel and the third liquid channel, and a plurality of spray heads are arranged on one side of each stirring rod, which faces to the inner wall of the tank body; one end of the rotating shaft is connected with a water inlet pipe, and the water inlet pipe is communicated with the first liquid channel. The pivot is rotatory and then drive the stirring rod rotation under the drive of motor, can stir the lime stone thick liquid of keeping in the thick liquid case, and the lime stone thick liquid is difficult for solidifying the caking, is favorable to the long-time preservation of lime stone thick liquid. After the limestone slurry in the slurry tank is used up, the remaining slurry is liable to adhere to the inner wall of the slurry tank, and it is difficult to clean the tank. According to the invention, the plurality of spray heads are arranged on the stirring rod on one side facing the inner wall of the box body, water flows through the first liquid channel, the second liquid channel and the third liquid channel from the water inlet pipe in sequence and then is sprayed out from each spray head, and simultaneously, the stirring rod is selected, so that the inner wall of the slurry box can be comprehensively cleaned, residual slurry attached to the inner wall of the slurry box can be washed off, and the inner wall of the slurry box can be kept clean.
Preferably, the rotating shaft is connected with a first gear, the motor is connected with a second gear, and the first gear is meshed with the second gear. The motor drives the rotating shaft to rotate through the first gear and the second gear.
Preferably, the spray head comprises a spray pipe and a core rod, wherein one end of the spray pipe is provided with a fixed cone cover, one end of the fixed cone cover, which is far away from the spray pipe, is provided with an elastic cone cover, the elastic cone cover is made of elastic materials, two circular openings with one larger diameter and one smaller diameter are arranged on the elastic cone cover, an annular spring is arranged on the circular opening with the smaller diameter, and the core rod penetrates through the circular opening with the smaller diameter. When the spray head sprays water, the round opening with smaller diameter on the elastic cone cover is outwards opened under the action of water pressure, an annular spray opening is formed between the round opening with smaller diameter on the elastic cone cover and the core rod, and water is sprayed out of the spray opening. When the spray head does not spray water, the circular opening with the smaller diameter on the elastic cone cover is hooped on the outer annular surface of the core rod under the action of the annular spring, so that the spray opening of the spray head is sealed, limestone slurry cannot flow into the spray head when the limestone slurry is stored in the slurry tank, and the blockage of the spray head is avoided.
Preferably, the elastic cone cover is made of butadiene acrylonitrile rubber.
Preferably, a rotary joint is arranged at the joint of the water inlet pipe and the rotating shaft. The rotary joint can enable the rotary shaft and the water inlet pipe to rotate relatively, so that the rotary shaft can prevent the water inlet pipe and the rotary shaft from rotating simultaneously when rotating.
Preferably, the bottom of the box body is provided with a water outlet pipe. The cleaned water is discharged from a water outlet pipe at the bottom of the box body.
The invention has the beneficial effects that: in the invention, limestone slurry is stored in the slurry tank and pumped into each desulfurizing tower through the slurry pump, thereby realizing the purpose of supplying limestone slurry to a plurality of desulfurizing towers simultaneously. The flow control valve can adjust the flow on each shunt tube, so that the limestone slurry flow entering each desulfurizing tower is the same, and the uniformity of limestone slurry supply is improved.
Drawings
Fig. 1 is a schematic diagram of the principle of the present invention.
Fig. 2 is a cross-sectional view of a slurry tank.
Fig. 3 is a cross-sectional view of the showerhead.
In the figure: 1. the device comprises a slurry tank, a 2, a first main flow pipe, a 3, a second main flow pipe, a 4, a slurry pump, a 5, an on-off valve, a 6, a shunt pipe, a 7, a liquid flowmeter, a 8, a flow control valve, a 9, a desulfurizing tower, a 10, a control device, a 11, a flow meter, a 12, a tank body, a 13, a rotating shaft supporting seat, a 14, a rotating shaft, a 15, a first gear, a 16, a second gear, a 17, a motor, a 18, a rotary joint, a 19, a water inlet pipe, a 20, a connecting column, a 21, a stirring rod, a 22, a first liquid channel, a 23, a second liquid channel, a 24, a third liquid channel, a 25, a spray head, a 26, an output pipe, a 27, a return pipe, a 28, a cabin cover, a 29, a 30, a spray pipe, a 31, a fixed cone cover, a.
Detailed Description
The invention is further described by the following detailed description in conjunction with the accompanying drawings.
Example 1:
as shown in fig. 1 to 3, a limestone slurry supply system includes a slurry tank 1 having an output pipe 26 and a return pipe 27, a first main flow pipe 2, a second main flow pipe 3, a slurry pump 4, a control device 10, and a desulfurization tower 9. The output pipe 26 of the slurry tank 1 is connected to the liquid inlet of the slurry pump 4 through the first main flow pipe 2, and the return pipe 27 of the slurry tank 1 is connected to the liquid outlet of the slurry pump 4 through the second main flow pipe 3. A plurality of shunt tubes 6 extend outwards from the second main flow tube 3. Each shunt tube 6 is respectively connected with a desulfurizing tower 9. Each shunt tube 6 is provided with a flow control valve 8 and a liquid flow meter 7. The flow control valve 8 is electrically connected to a control device 10. The flow control valve 8 is of the prior art. The flow control valve 8 is used to regulate the size of the slurry flow on each shunt tube 6. The control device 10 is used to control the size of the valve port of the flow control valve 8. The first main flow pipe 2 is provided with an on-off valve 5. A flow meter 11 is provided in the second main flow pipe 3.
The slurry tank 1 comprises a tank body 12, a motor 17 and a rotating shaft 14. The upper end of the box body 12 is provided with a rotating shaft supporting seat 13, and a rotating shaft 14 is rotatably connected to the rotating shaft supporting seat 13. The rotation shaft 14 is disposed in a vertical direction. The lower end of the rotating shaft 14 extends into the box body 12. The motor 17 is fixedly arranged at the upper end of the box body 12. The motor 17 is connected with a second gear 16, the upper end of the rotating shaft 1 is connected with a first gear 15, and the first gear 15 is meshed with the second gear 16. The upper end of the case 12 is also provided with an openable/closable hatch 28. The rotating shaft 14 is provided with a plurality of stirring rods 21, and the stirring rods 21 are fixed on the rotating shaft 14 through a connecting column 20. The stirring rod 21 is a circular rod-shaped structure. The stirring rod 21 is arranged in a vertical direction. The connecting column 20 is arranged transversely. The rotating shaft 14 is provided with a first fluid passage 22 therein, and the first fluid passage 22 is provided along the axial direction of the rotating shaft 14. A second fluid passage 23 is provided in the connecting column 20. The second liquid passage 23 is provided along the axial direction of the connecting column 20. The stirring rod 21 has a third liquid passage 24 formed therein. The third liquid passage 24 is provided along the axial direction of the stirring rod 21. The second liquid passage 23 communicates with the first liquid passage 22 and the third liquid passage 24, respectively. The upper end of the rotating shaft 14 is connected with a water inlet pipe 19. The inlet pipe 19 communicates with the first liquid passage 22. The joint of the water inlet pipe 19 and the rotating shaft 14 is provided with a rotary joint 18. The rotary joint 18 is prior art. The rotary joint can enable the rotary shaft and the water inlet pipe to rotate relatively, so that the rotary shaft can prevent the water inlet pipe and the rotary shaft from rotating simultaneously when rotating. A plurality of spray heads 25 are arranged on one side of the stirring rod 21 facing the inner wall of the box body 1. Spray head 25 includes a spout 30, a stem 33. The nozzle 30 has a circular tube structure. One end of the nozzle 30 is provided with a fixed cone 31. The end of the fixed cone 31 remote from the nozzle 30 is provided with an elastic cone 34. The elastomeric cone cover 34 is made of an elastomeric material. In the present application, the elastomeric cone 34 is made of nitrile rubber. The core bar 33 is a circular rod-shaped structure. The core rod 33 is fixed in the center of the nozzle 30 by the fixing post 32. The elastic cone cover 34 is provided with two circular openings with the diameters being one larger and one smaller, the circular opening with the diameter being smaller is provided with an annular spring 35, and the core rod 33 penetrates through the circular opening with the diameter being smaller. The bottom of the tank 12 is provided with an outlet pipe 29. After the limestone slurry in the slurry tank is used up, the remaining slurry is liable to adhere to the inner wall of the slurry tank, and it is difficult to clean the tank. According to the invention, the plurality of spray heads are arranged on the stirring rod on one side facing the inner wall of the box body, water flows through the first liquid channel, the second liquid channel and the third liquid channel from the water inlet pipe in sequence and then is sprayed out from each spray head, and simultaneously, the stirring rod is selected, so that the inner wall of the slurry box can be comprehensively cleaned, residual slurry attached to the inner wall of the slurry box can be washed off, and the inner wall of the slurry box can be kept clean. When the spray head sprays water, the round opening with smaller diameter on the elastic cone cover is outwards opened under the action of water pressure, an annular spray opening is formed between the round opening with smaller diameter on the elastic cone cover and the core rod, and water is sprayed out of the spray opening. When the spray head does not spray water, the circular opening with the smaller diameter on the elastic cone cover is hooped on the outer annular surface of the core rod under the action of the annular spring, so that the spray opening of the spray head is sealed, limestone slurry cannot flow into the spray head when the limestone slurry is stored in the slurry tank, and the blockage of the spray head is avoided.
In the invention, limestone slurry is stored in the slurry tank and pumped into each desulfurizing tower through the slurry pump, thereby realizing the purpose of supplying limestone slurry to a plurality of desulfurizing towers simultaneously. The flow control valve can adjust the flow on each shunt tube, so that the limestone slurry flow entering each desulfurizing tower is the same, and the uniformity of limestone slurry supply is improved. The liquid flowmeter can measure the slurry flow on each shunt tube, thereby realizing the monitoring of the flow condition of each shunt tube.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A limestone slurry supply system characterized by: including the thick liquid case that has output tube and back flow, first main flow pipe, the second main flow pipe, the thick liquid pump, controlling means, the desulfurizing tower, link to each other through first main flow pipe between the inlet of output tube on the thick liquid case and thick liquid pump, link to each other through the second main flow pipe between the liquid outlet of back flow on the thick liquid case and thick liquid pump, outwards extend on the second main flow pipe has a plurality of shunt tubes, the desulfurizing tower is connected respectively to every shunt tube, all be provided with flow control valve and liquid flowmeter on every shunt tube, flow control valve is connected with controlling means electricity.
2. A limestone slurry supply system according to claim 1 wherein the first main flow pipe is provided with an on-off valve.
3. A limestone slurry supply system according to claim 1 wherein the second main flow pipe is provided with a flow meter.
4. The limestone slurry supply system according to claim 1, wherein the slurry tank comprises a tank body, a motor, a rotating shaft which is rotatably connected to the tank body and is driven by the motor to rotate, the rotating shaft extends into the tank body, a plurality of stirring rods are arranged on the rotating shaft, the stirring rods are fixed on the rotating shaft through a connecting column, a first liquid channel is arranged in the rotating shaft, a second liquid channel is arranged in the connecting column, a third liquid channel is arranged in the stirring rods, the second liquid channel is respectively communicated with the first liquid channel and the third liquid channel, and a plurality of spray heads are arranged on one side of the stirring rods, which faces to the inner wall of the tank body; one end of the rotating shaft is connected with a water inlet pipe, and the water inlet pipe is communicated with the first liquid channel.
5. The limestone slurry supply system of claim 4 wherein the shaft has a first gear coupled thereto and the motor has a second gear coupled thereto, the first gear being in mesh with the second gear.
6. The limestone slurry supply system according to claim 4, wherein the spray head comprises a spray pipe and a core bar, one end of the spray pipe is provided with a fixed cone cover, one end of the fixed cone cover far away from the spray pipe is provided with an elastic cone cover, the elastic cone cover is made of elastic material, two circular openings with one larger diameter and one smaller diameter are arranged on the elastic cone cover, an annular spring is arranged on the circular opening with the smaller diameter, and the core bar passes through the circular opening with the smaller diameter.
7. A limestone slurry supply system according to claim 6, wherein the elastic cone cover is made of nitrile rubber.
8. A limestone slurry supply system according to claim 4, wherein a rotary joint is provided at the junction of the water inlet pipe and the rotary shaft.
9. A limestone slurry supply system according to claim 4, wherein the bottom of the tank is provided with an outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911087694.6A CN111214935A (en) | 2019-11-08 | 2019-11-08 | Limestone slurry supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911087694.6A CN111214935A (en) | 2019-11-08 | 2019-11-08 | Limestone slurry supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111214935A true CN111214935A (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911087694.6A Pending CN111214935A (en) | 2019-11-08 | 2019-11-08 | Limestone slurry supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111214935A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055021A (en) * | 2022-06-09 | 2022-09-16 | 江苏伟丰建筑安装集团有限公司 | Dust collector for building site |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101961600A (en) * | 2010-08-16 | 2011-02-02 | 中环（中国）工程有限公司 | Redundancy design-based limestone slurry supplying device |
| WO2016010135A1 (en) * | 2014-07-17 | 2016-01-21 | 三菱日立パワーシステムズ株式会社 | Flue gas desulfurization apparatus and method of operating same |
| CN105771613A (en) * | 2016-05-09 | 2016-07-20 | 林耿锋 | Limestone slurry conveying system |
| CN106362667A (en) * | 2016-11-19 | 2017-02-01 | 张奇 | Secondary stirring self-cleaning type reaction still structure |
| CN106733305A (en) * | 2016-12-30 | 2017-05-31 | 浙江工程建设监理公司 | Construction site micro-atomizing drip-proof shower nozzle |
| CN206346774U (en) * | 2016-12-25 | 2017-07-21 | 山东鲁泰控股集团有限公司 | A kind of mine automatic dustfall device |
| CN207076369U (en) * | 2017-07-21 | 2018-03-09 | 浙江唯精合金科技有限公司 | Mixer |
| CN107998866A (en) * | 2018-01-18 | 2018-05-08 | 广州奥恺德电气科技有限公司 | A kind of lime slurry conveying device with pressure and method |
-
2019
- 2019-11-08 CN CN201911087694.6A patent/CN111214935A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101961600A (en) * | 2010-08-16 | 2011-02-02 | 中环（中国）工程有限公司 | Redundancy design-based limestone slurry supplying device |
| WO2016010135A1 (en) * | 2014-07-17 | 2016-01-21 | 三菱日立パワーシステムズ株式会社 | Flue gas desulfurization apparatus and method of operating same |
| CN105771613A (en) * | 2016-05-09 | 2016-07-20 | 林耿锋 | Limestone slurry conveying system |
| CN106362667A (en) * | 2016-11-19 | 2017-02-01 | 张奇 | Secondary stirring self-cleaning type reaction still structure |
| CN206346774U (en) * | 2016-12-25 | 2017-07-21 | 山东鲁泰控股集团有限公司 | A kind of mine automatic dustfall device |
| CN106733305A (en) * | 2016-12-30 | 2017-05-31 | 浙江工程建设监理公司 | Construction site micro-atomizing drip-proof shower nozzle |
| CN207076369U (en) * | 2017-07-21 | 2018-03-09 | 浙江唯精合金科技有限公司 | Mixer |
| CN107998866A (en) * | 2018-01-18 | 2018-05-08 | 广州奥恺德电气科技有限公司 | A kind of lime slurry conveying device with pressure and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055021A (en) * | 2022-06-09 | 2022-09-16 | 江苏伟丰建筑安装集团有限公司 | Dust collector for building site |
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