CN213885787U - Lime slurry preparation device - Google Patents
Lime slurry preparation device Download PDFInfo
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- CN213885787U CN213885787U CN202022865749.6U CN202022865749U CN213885787U CN 213885787 U CN213885787 U CN 213885787U CN 202022865749 U CN202022865749 U CN 202022865749U CN 213885787 U CN213885787 U CN 213885787U
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Abstract
The utility model relates to a waste incinerator auxiliary device. The technical scheme is as follows: a lime slurry preparation device comprises a pulping tank with a stirrer and a discharge pipe, feeding equipment for feeding lime slurry into the pulping tank, and a water inlet pipe for feeding water into the pulping tank; the method is characterized in that: the top of the pulping tank is also provided with a spraying powder discharging device with an air suction pipeline, and the spraying powder discharging device is communicated with the inner cavity of the pulping tank through a water inlet at the top end of the pulping tank; the end part of the water inlet pipe extends into the inner cavity of the spraying powder discharging equipment, and the end part of the water inlet pipe is provided with a large-flow nozzle so as to spray atomized water to the inner cavity of the spraying powder discharging equipment; the powder discharge fan is installed on the air suction pipeline, so that the inner cavity of the pulping tank is in a micro negative pressure state, and the pipeline blockage caused by water vapor in the pulping tank flowing back into the blanking device is prevented. The device can ensure smooth feeding of lime slurry, is beneficial to reliable operation of a flue gas treatment facility and can prevent lime powder from rising outwards, thereby ensuring that the site environment meets the environmental protection requirement.
Description
Technical Field
The utility model relates to a waste incinerator auxiliary device specifically is SDA semi-dry deacidification system auxiliary device.
Background
With the increasing awareness of environmental protection, the waste incineration power generation project generates certain adjacency effect as an aversive facility. In order to respond to social demands, avoid the environmental influence brought by the waste power plant as much as possible, smoothly develop project construction and operation and properly deal with the key problems concerned by the society, and the construction and operation standards of waste incineration power plants in various regions are greatly improved. The emission standard of the smoke pollutants of the newly built garbage power plant is generally required to reach or exceed the emission standard of the European Union, namely EU 2000/76/EC.
SO as main emission index of waste incineration power plant2The emission of acid gases such as HCl has received much attention. At present, all domestic waste incineration plants are equipped with enough flue gas treatment facilities according to the standard, and good operation is realized. The deacidification system is used as main flow equipment in a flue gas treatment facility, wherein a high-rotating-speed rotary atomizer needs to adopt lime slurry as a deacidification agent, so that the aim of deacidifying the flue gas is fulfilled. In the process of preparing lime slurry, the existing equipment is easy to have the situations of difficult discharging caused by the outward rising of lime powder and the damp blockage of a discharging opening; this will be to the smokeThe normal operation of the gas treatment operation and the on-site environment are adversely affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned background art, provide a lime thick liquid preparation facilities's improvement, the device should be able to guarantee the unobstructed unloading of lime thick liquid to the reliable operation that does benefit to flue gas treatment facility can prevent lime powder from raising outward again, thereby guarantees that the site environment accords with the environmental protection requirement.
The utility model provides a technical scheme is:
a lime slurry preparation device comprises a pulping tank with a stirrer and a discharge pipe, feeding equipment for feeding lime slurry into the pulping tank, and a water inlet pipe for feeding water into the pulping tank; the method is characterized in that: the top of the pulping tank is also provided with a spraying powder discharging device with an air suction pipeline, and the spraying powder discharging device is communicated with the inner cavity of the pulping tank through a water inlet at the top end of the pulping tank; the end part of the water inlet pipe extends into the inner cavity of the spraying powder discharging equipment, and the end part of the water inlet pipe is provided with a large-flow nozzle so as to spray atomized water to the inner cavity of the spraying powder discharging equipment; the powder discharge fan is installed on the air suction pipeline, so that the inner cavity of the pulping tank is in a micro negative pressure state, and the pipeline blockage caused by water vapor in the pulping tank flowing back into the blanking device is prevented.
The feeding equipment is a screw conveyer; the outlet of the screw conveyer is communicated with the feed inlet at the top of the pulping tank through a powder feeding pipe.
The water inlet and the feed inlet are respectively positioned at the left side and the right side of the top end surface of the pulping tank so as to reduce the damping phenomenon of the feed inlet.
The utility model discloses a theory of operation is: the spraying powder discharging device arranged at the top of the pulping tank and the large-flow nozzle ensure that the pulping water can be atomized into a cone shape through the pressure of the inlet water to cover the inner cavity of the whole spraying powder discharging device so as to prevent the lime powder from running out of the spraying powder discharging device. When the water is fed into the powder feeding device for operation, the powder discharging fan is started by the spraying powder discharging device, the air volume and the air pressure of the fan are controlled, the micro negative pressure can be formed in the pulping tank, the water vapor in the pulping tank can not flow back into the discharging device through the feeding hole, and the blockage caused by the fact that the lime powder at the feeding hole is damped is avoided.
The utility model has the advantages that: because the spraying and powder discharging device with the fan is arranged, the phenomenon that lime dust is blown out to cause environmental damage is prevented, water vapor in the pulping tank cannot enter the feeding hole due to micro negative pressure formed in the pulping tank, the phenomenon of difficult discharging caused by wetting powder in the discharging device is avoided, and the normal operation of a deacidification system in a flue gas treatment facility is ensured.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
The figure shows that: 1-spraying powder discharge equipment; 2-a large flow nozzle; 3-powder discharge fan; 4-pulping tank; 5-feeding means; 6-a discharge pipe; 7-water inlet pipe; and M-motor.
Detailed Description
The following further description is made with reference to the embodiments shown in the drawings.
The lime slurry preparation device shown in the attached drawing comprises a pulping tank 4 with a stirrer and a liquid outlet pipe 6, a feeding device 5 for feeding lime slurry into the pulping tank, and a water inlet pipe 7 (a water source is preferably municipal tap water) for conveying water into the pulping tank;
the structure is similar to the existing lime slurry preparation equipment.
The utility model discloses an improvement is: the top of the pulping tank is also provided with a spraying powder discharging device 1 which is communicated with the inner cavity of the pulping tank through a water inlet at the top end of the pulping tank; the inner cavity of the spraying powder discharge equipment is communicated with an air suction pipeline with a powder discharge fan 3; the end part of the water inlet pipe extends into the spraying powder discharging equipment, and the end part of the water pipe is provided with a large-flow nozzle 2 so as to spray atomized water to the inner cavity of the spraying powder discharging equipment; the powder discharge fan can enable the inner cavity of the pulping tank to be in a micro-negative pressure state after being opened, and can prevent pipeline blockage caused by water vapor in the pulping tank flowing back into the blanking device.
Further, the feeding device is a screw conveyer; the outlet of the screw conveyer is communicated with the feed inlet at the top of the pulping tank through a powder feeding pipe.
Furthermore, the water inlet and the feed inlet are respectively positioned at the left side and the right side of the top end surface of the pulping tank, and the distance between the water inlet and the feed inlet is kept so as to reduce the damping phenomenon of the feed inlet as much as possible.
Furthermore, the liquid outlet pipe and the water inlet pipe are respectively provided with a valve so as to open and close the liquid outlet pipe and the water inlet pipe according to the working condition.
Claims (3)
1. A lime slurry preparation device comprises a pulping tank (4) with a stirrer and a discharge pipe (6), feeding equipment (5) for feeding lime slurry into the pulping tank, and a water inlet pipe (7) for conveying water into the pulping tank; the method is characterized in that: the top of the pulping tank is also provided with a spraying powder discharging device (1) with an air suction pipeline, and the spraying powder discharging device is communicated with the inner cavity of the pulping tank through a water inlet at the top end of the pulping tank; the end part of the water inlet pipe extends into the inner cavity of the spraying powder discharging equipment, and the end part of the water inlet pipe is provided with a large-flow nozzle (2) so as to spray atomized water to the inner cavity of the spraying powder discharging equipment; the air suction pipeline is provided with the powder discharge fan (3) so that the inner cavity of the pulping tank is in a micro-negative pressure state, and the pipeline blockage caused by the fact that water vapor in the pulping tank flows backwards into the blanking device is prevented.
2. The lime slurry preparation apparatus according to claim 1, characterized in that: the feeding equipment is a screw conveyer; the outlet of the screw conveyer is communicated with the feed inlet at the top of the pulping tank through a powder feeding pipe.
3. The lime slurry preparation apparatus according to claim 2, characterized in that: the water inlet and the feed inlet are respectively positioned at the left side and the right side of the top end surface of the pulping tank so as to reduce the damp phenomenon of the feed inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022865749.6U CN213885787U (en) | 2020-12-03 | 2020-12-03 | Lime slurry preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022865749.6U CN213885787U (en) | 2020-12-03 | 2020-12-03 | Lime slurry preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213885787U true CN213885787U (en) | 2021-08-06 |
Family
ID=77100364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022865749.6U Active CN213885787U (en) | 2020-12-03 | 2020-12-03 | Lime slurry preparation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213885787U (en) |
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2020
- 2020-12-03 CN CN202022865749.6U patent/CN213885787U/en active Active
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