CN211302620U - Lime conveying device from lime bin to mixer in semi-dry desulfurization process - Google Patents
Lime conveying device from lime bin to mixer in semi-dry desulfurization process Download PDFInfo
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- CN211302620U CN211302620U CN201921432218.9U CN201921432218U CN211302620U CN 211302620 U CN211302620 U CN 211302620U CN 201921432218 U CN201921432218 U CN 201921432218U CN 211302620 U CN211302620 U CN 211302620U
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Abstract
The utility model discloses a lime conveying device from a lime bin to a mixer in a semidry desulfurization process, which comprises a circular ash storage pipe arranged at a lower ash opening of the lime bin, wherein the circular ash storage pipe and the circular ash storage pipe are communicated through a blanking pipe; the bottom of the ash storage circular pipe is provided with a 90-degree fluidization wind bent pipe; the top of the ash storage circular pipe is provided with a compressed air inlet; and a steel wire hose is arranged at the bottom of the ash storage circular pipe. The utility model discloses an at a storage ash pipe of lime storehouse cone bottom installation, when needs carry lime, earlier to the lime that flows in storage ash pipe the fluidization of ventilating, then close the electromagnetism and start the slide valve and carry out the strength pressurization at its export position, can realize the smooth transport of lime, not only the operation is simple, carries effectually, and the fault rate is very low moreover.
Description
Technical Field
The utility model relates to an industrial kiln flue gas environmental protection processing facility technical field especially relates to a lime storehouse to lime conveyor of blender in semidry desulfurization technology.
Background
At present, the semi-dry desulfurization process adopts quicklime CaO or hydrated lime Ca (OH) 2 and fly ash containing certain alkalinity as an absorbent, and the absorbent and a certain amount of circulating ash enter a humidifying mixer, and enter a desulfurization reactor after being humidified and mixed in the humidifying mixer. The reacted desulfurizer enters a dust remover along with flue gas, and after solid dust is filtered and recovered, the solid dust is activated by a fluidized chamber and then flows back to a mixing and humidifying device to be mixed with part of supplementary fresh lime for carrying out desulfurization reaction again. At present, the supplement of new absorbent from the lime bin to the mixer is completed by a mechanical screw conveying device. The distance between the lime bin and the mixer determines the length of the matched mechanical spiral conveying device. Because the storage bin is far away from the mixer (some are more than ten meters long), the overlong distance causes the conveying blade shaft inside the mechanical spiral conveying device to be also several meters long. In the practical application process, the bending deformation phenomenon can occur in the middle of the conveying blade shaft due to the overlong axial direction. Moreover, as the main shafts of the blades are not concentric, the rotating radius of the blades is increased, and the rotating radius of the blades can rub against the pipe wall in the ash conveying process, so that the phenomenon of blocking or abrasion of the ash conveying pipe is caused. In addition, the conventional mechanical screw conveying system also needs a matched speed reducer, and the failure rate of the speed reducer in general mechanical equipment is high, so that the risk of system operation is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a lime storehouse to lime conveyor of blender in semidry desulfurization technology can realize the transport of lime, and overall structure is simple moreover, and the operation fault rate is extremely low, and is effectual.
The utility model adopts the technical proposal that:
a lime conveying device from a lime bin to a mixer in a semidry desulfurization process comprises a circular lime storage pipe arranged at a lower lime port of the lime bin, the circular lime storage pipe and the circular lime storage pipe are communicated through a blanking pipe, and a manual gate valve and a pneumatic gate valve are sequentially arranged on the blanking pipe from top to bottom; the bottom of the ash storage circular pipe is provided with a 90-degree fluidization wind bent pipe which is used for being communicated with a compressed air source; the top of the ash storage circular pipe is provided with a compressed air inlet which is communicated with a compressed air source through a compressed air pipeline; the bottom of the ash storage circular pipe is provided with a steel wire hose which is used for connecting a mixer; 90 fluidization wind return bend and compressed air pipeline on be provided with first, second electromagnetism pneumatic ball valve respectively, still including PLC and touch display screen, PLC's output connect the input of first, second electromagnetism pneumatic ball valve and pneumatic gate valve respectively, PLC is connected with the touch display screen electricity.
The 90-degree fluidization wind elbow pipe and the compressed air pipeline are respectively provided with a bypass pipeline, and the bypass pipelines are respectively provided with a ball valve.
The 90-degree fluidization wind bent pipe is parallel to the pipe wall of the feeding pipe of the lime bin.
The compressed air pipeline adopts a DN20 air pipe.
The utility model discloses an install one in lime storehouse cone bottom and store up grey pipe, store up the manual gate valve of setting in the upper end of grey pipe, pneumatic gate valve and lime storehouse intercommunication, the lower extreme passes through steel wire hose and blender intercommunication, the inlet port has still been seted up to the upper end of storing up grey pipe, and the inlet port passes through trachea and compressed air source fixed connection. The utility model discloses when needs carry lime, ventilate the fluidization earlier to the lime that flows in the ash storage pipe, then close the electromagnetism and start the slide valve and carry out the strength pressurization at its export position, can realize the smooth transport of lime. Based on the condition, the utility model discloses a lime bin to the blender section among the semidry desulfurization process provides a pneumatic conveying method, and this mode not only moves simply, carries effectually, and the fault rate is very low moreover.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an electrical schematic block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in figure 1, the utility model comprises a circular ash storage pipe 3 arranged at the lower ash opening of a lime bin, the two are communicated through a blanking pipe, and a manual gate valve 1 and a pneumatic gate valve 2 are sequentially arranged on the blanking pipe from top to bottom; the top of the blanking pipe is provided with a 90-degree fluidized air bent pipe 6 which is used for being communicated with a compressed air source 8; the top of the ash storage circular tube 3 is provided with a compressed air inlet 4 which is communicated with a compressed air source 8 through a compressed air pipeline; the bottom of the ash storage circular pipe 3 is provided with a steel wire hose 5 which is used for connecting a mixer; 90 fluidization wind return bend 6 and compressed air inlet 4 compressed air pipeline that links to each other on be provided with first electromagnetism pneumatic ball valve 11, second electromagnetism pneumatic ball valve 10 respectively, still including PLC and touch display screen, PLC's output connect the input of first, second electromagnetism pneumatic ball valve and pneumatic gate valve respectively, PLC is connected with the touch display screen electricity.
The compressed air pipelines connected with the 90-degree fluidization wind elbow and the compressed air inlet 4 are respectively provided with a bypass pipeline, and the bypass pipelines are respectively provided with a ball valve, specifically as shown in the figure, the compressed air pipelines respectively comprise a first ball valve 9 and a second ball valve 12, so that the compressed air pipelines are used as emergency standby schemes of manual operation when the first electromagnetic pneumatic ball valve 11 and the second electromagnetic pneumatic ball valve 10 are automatically controlled to generate faults.
The front-section pneumatic gate valve 2 is opened before ash conveying, the pneumatic gate valve 2 is closed after the ash storage circular tube 3 is full of ash, and then the lime in the ash storage circular tube 3 is inflated and pressurized.
The 90-degree fluidization wind bent pipe 6 is parallel to the pipe wall of the feeding pipe of the lime bin.
The compressed air pipeline adopts a DN20 air pipe.
The bottom of the lime bin cone is sequentially provided with a DN100 manual gate valve 1, a DN100 pneumatic gate valve 2 and a DN150 ash storage circular tube 3. A90-degree fluidization air bent pipe 6 (DN 10 mm) is arranged in a feeding pipe on the upper part of the manual gate valve 1, the 90-degree fluidization air bent pipe 6 is parallel to the pipe wall of the feeding pipe, and the main function of the device is to blow fluidization air with the pressure of 0.1-0.3Mpa into lime so as to improve the fluidity of the lime at the bottom of the silo. The on-off of the fluidizing air is controlled by an electromagnetic pneumatic valve at the ash discharging port. The upper end of the ash storage round pipe is provided with a DN20 air pipe, and the other end of the air pipe is provided with a lime conveying electromagnetic pneumatic valve 2. Wherein the ball valves 1 and 2 are designed for manual emergency operation in the field.
The utility model discloses manual slide valve 1 of well lime storehouse lower part is in normally open state at ordinary times. When the lime bin is needed to add lime to the mixer, the first electromagnetic pneumatic ball valve 11 at the bottom of the lime bin and at the upper part of the manual gate valve 1 is opened by the system, and the free-running property of the lime is improved. After the lime is fully fluidized, the pneumatic gate valve 2 is opened, and the lime directly and automatically flows into the lime storage circular pipe 3. After the ash storage circular pipe 3 is filled with lime, the pneumatic gate valve 2 is closed, the second electromagnetic pneumatic ball valve 10, namely the lime conveying electromagnetic pneumatic ball valve, is opened, and the ash storage circular pipe is pressurized (0.4-0.7 MPa). Under the driving of pressure, lime smoothly reaches the interior of the mixer through the discharge port 5 and the steel wire hose. Thereby realizing the lime transportation from the new lime bin to the mixer section.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A lime conveying device from a lime bin to a mixer in a semi-dry desulfurization process is characterized in that: the device comprises a circular ash storage pipe arranged at a lower ash opening of a lime bin, the circular ash storage pipe and the circular ash storage pipe are communicated through a blanking pipe, and a manual gate valve and a pneumatic gate valve are sequentially arranged on the blanking pipe from top to bottom; the bottom of the ash storage circular pipe is provided with a 90-degree fluidization wind bent pipe which is used for being communicated with a compressed air source; the top of the ash storage circular pipe is provided with a compressed air inlet which is communicated with a compressed air source through a compressed air pipeline; the bottom of the ash storage circular pipe is provided with a steel wire hose which is used for connecting a mixer; 90 fluidization wind return bend and compressed air pipeline on be provided with first, second electromagnetism pneumatic ball valve respectively, still including PLC and touch display screen, PLC's output connect the input of first, second electromagnetism pneumatic ball valve and pneumatic gate valve respectively, PLC is connected with the touch display screen electricity.
2. The lime conveying device from a lime bin to a mixer in the semi-dry desulfurization process according to claim 1, characterized in that: the 90-degree fluidization wind elbow pipe and the compressed air pipeline are respectively provided with a bypass pipeline, and the bypass pipelines are respectively provided with a ball valve.
3. The lime conveying device from a lime bin to a mixer in the semi-dry desulfurization process according to claim 1, characterized in that: the 90-degree fluidization wind bent pipe is parallel to the pipe wall of the feeding pipe of the lime bin.
4. The lime conveying device from a lime bin to a mixer in the semi-dry desulfurization process according to claim 2, characterized in that: the compressed air pipeline adopts a DN20 air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432218.9U CN211302620U (en) | 2019-08-30 | 2019-08-30 | Lime conveying device from lime bin to mixer in semi-dry desulfurization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432218.9U CN211302620U (en) | 2019-08-30 | 2019-08-30 | Lime conveying device from lime bin to mixer in semi-dry desulfurization process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211302620U true CN211302620U (en) | 2020-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921432218.9U Active CN211302620U (en) | 2019-08-30 | 2019-08-30 | Lime conveying device from lime bin to mixer in semi-dry desulfurization process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211302620U (en) |
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2019
- 2019-08-30 CN CN201921432218.9U patent/CN211302620U/en active Active
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