CN216571920U - Online pickling system of flue gas desulfurization vacuum belt feeder filter cloth of thermal power plant - Google Patents
Online pickling system of flue gas desulfurization vacuum belt feeder filter cloth of thermal power plant Download PDFInfo
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- CN216571920U CN216571920U CN202122887325.4U CN202122887325U CN216571920U CN 216571920 U CN216571920 U CN 216571920U CN 202122887325 U CN202122887325 U CN 202122887325U CN 216571920 U CN216571920 U CN 216571920U
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- filter cloth
- vacuum belt
- belt conveyor
- pickling
- storage tank
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Abstract
The utility model discloses an online pickling system for flue gas desulfurization vacuum belt conveyor filter cloth of a thermal power plant, which comprises a hydrochloric acid storage tank and a plurality of sets of cleaning units, wherein each cleaning unit comprises a pickling nozzle and a filtrate receiving disc, the pickling nozzle is positioned above the vacuum belt conveyor filter cloth and is communicated with the hydrochloric acid storage tank through a liquid supply pipe, and the liquid supply pipe is provided with a valve and an acid supply pump; the filtrate receiving tray is positioned below the filter cloth of the vacuum belt conveyor and is communicated with the hydrochloric acid storage tank through a liquid return pipe. The utility model directly washes and acid washes the filter cloth, strengthens the maintenance of the filter cloth, prolongs the service life of the filter cloth and saves the operation and maintenance cost. The online filter cloth pickling equipment mainly adopts high-pressure flushing water to clean filter holes, and then utilizes weak acid to dissolve calcium sulfite and calcium carbonate in the filter cloth, so that the aim of cleaning filter cloth pore passages is fulfilled.
Description
Technical Field
The utility model relates to an online pickling system for filter cloth of a flue gas desulfurization vacuum belt conveyor of a thermal power plant, and belongs to the technical field of filter cloth cleaning equipment of vacuum belt conveyors.
Background
The vacuum belt conveyor is widely applied to wet desulphurization in a thermal power plant, is a main device of a gypsum dehydration system, and directly influences whether the system can normally operate. The filter cloth is the main accessory of vacuum belt feeder, directly influences vacuum belt feeder use and gypsum dehydration effect. But at present along with desulfurization system operation, because desulfurization system is good, the tiny granule in the gypsum blocks up very easily because of reasons such as oxidation, dust, causes the filter cloth to continue to use, and the belt feeder dehydration effect is not good, and the gypsum moisture content improves, seriously influences the operation of gypsum dewatering system, threatens even that desulfurization system puts into operation. The gypsum dewatering filter cloth is composed of a plurality of gaps, the gaps are many, uniform and irregular, and the aperture of the filter cloth is generally 10-40vm, so that the filter cloth has good particle interception performance and air permeability. For gypsum dewatering filter cloths, the outer coarse layer serves as a prefilter to retain larger particles, and the inner fine layer serves to retain smaller particles. The filter cloth filtration efficiency depends on the porosity of the filter cloth surface. The porosity directly determines the permeability of the filter cloth, which is the key to influence the success of the filter cloth filtration.
The desulfurized gypsum particles are in a shape of relatively fine particles, the average particle size is about 40-60vm, the particles are in short column shapes, the diameter-length ratio is 1.5-2.5, the desulfurized gypsum particles are gray and yellow, the content of calcium sulfate dihydrate is higher and is generally more than 90%, and the desulfurized gypsum particles also contain impurities such as calcium sulfite, calcium carbonate, fly ash and the like. In the actual operation of a wet desulphurization system, the problems of the change of the operation condition of the desulphurization system, poor gypsum oxidation and the like generally exist, so that the content of calcium sulfite/calcium carbonate in gypsum is higher, and because calcium sulfite and calcium carbonate particles are finer, when the content of calcium sulfite and calcium carbonate is high, the pore passages of the filter cloth are directly blocked, so that the air permeability of the filter cloth is reduced, the gypsum dewatering effect is reduced, the time is long, the filter cloth is more and more seriously blocked, and the normal production is directly influenced. In general, the filter cloth needs to be replaced once after being used for 6 months, and the operation and maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an on-line filter cloth acid pickling system of a flue gas desulfurization vacuum belt conveyor in a thermal power plant, which is used for directly washing and pickling filter cloth, enhancing filter cloth maintenance, prolonging the service life of the filter cloth and saving operation and maintenance cost.
In order to solve the technical problems, the utility model adopts the following technical scheme:
an online pickling system for flue gas desulfurization vacuum belt conveyor filter cloth in a thermal power plant comprises a hydrochloric acid storage tank and a plurality of sets of cleaning units, wherein each cleaning unit comprises a pickling nozzle and a filtrate receiving disc, the pickling nozzle is positioned above the vacuum belt conveyor filter cloth and is connected and communicated with the hydrochloric acid storage tank through a liquid supply pipe, and a valve and an acid supply pump are arranged on the liquid supply pipe; the filtrate receiving tray is positioned below the filter cloth of the vacuum belt conveyor and is communicated with the hydrochloric acid storage tank through a liquid return pipe. The acid liquor receiving disc is arranged below the backflushing pickling nozzle and is arranged in a shutter type mode, and the electric pull rod is arranged, so that the acid liquor receiving disc can be automatically stored and released, and the acid liquor can be conveniently recovered.
In the online pickling system of flue gas desulfurization vacuum belt feeder filter cloth of thermal power plant, the pickling nozzle is installed on the mount, still install driving motor on the mount, be equipped with the washing brush on driving motor's the output shaft.
In the online acid pickling system for the filter cloth of the thermal power plant flue gas desulfurization vacuum belt conveyor, the fixing frame is installed on the lifting end of the lifting device, and the lifting device is installed on the vacuum belt conveyor.
In the online acid pickling system for the filter cloth of the thermal power plant flue gas desulfurization vacuum belt conveyor, two driving motors are installed on each fixing frame, and a washing brush is installed on an output shaft of each driving motor, wherein the rotating directions of the two driving motors are opposite.
In the online pickling system of flue gas desulfurization vacuum belt feeder filter cloth of thermal power plant, be equipped with the baffle of vertical setting in the hydrochloric acid holding vessel, the baffle separates into two cabins with the hydrochloric acid holding vessel, and one of them cabin and feed pipe intercommunication, another cabin and return liquid pipe intercommunication. On one hand, the reflux liquid impurity can be filtered, and meanwhile, the isolation area in the hydrochloric acid storage tank can be regularly cleaned, so that the cleaning area is reduced.
Compared with the prior art, the filter cloth washing and pickling device directly washes and pickle the filter cloth, strengthens filter cloth maintenance, prolongs the service life of the filter cloth, and saves operation and maintenance cost. The online filter cloth pickling equipment mainly adopts high-pressure flushing water to clean filter holes, and then utilizes weak acid to dissolve calcium sulfite and calcium carbonate in the filter cloth, so that the aim of cleaning filter cloth pore passages is fulfilled.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Reference numerals: 1-partition plate, 2-hydrochloric acid storage tank, 3-liquid return pipe, 4-acid supply pump, 5-valve, 6-vacuum belt conveyor, 7-acid cleaning nozzle, 8-lifting device, 9-driving motor, 10-filtrate receiving tray and 11-liquid supply pipe.
The utility model is further described with reference to the following figures and detailed description.
Detailed Description
Example 1 of the utility model: an online pickling system for 6 filter cloth of a thermal power plant flue gas desulfurization vacuum belt conveyor comprises a hydrochloric acid storage tank 2 and a plurality of sets of cleaning units, wherein each cleaning unit comprises a pickling nozzle 7 and a filtrate receiving disc 10, the pickling nozzle 7 is positioned above the filter cloth of the vacuum belt conveyor 6, the pickling nozzle 7 is connected and communicated with the hydrochloric acid storage tank 2 through a liquid supply pipe 11, and the liquid supply pipe 11 is provided with a valve 5 and an acid supply pump 4; the filtrate receiving tray 10 is positioned below the filter cloth of the vacuum belt conveyor 6, and the filtrate receiving tray 10 is communicated with the hydrochloric acid storage tank 2 through a liquid return pipe 3.
The pickling nozzle 7 is arranged on a fixing frame, the fixing frame is further provided with a driving motor 9, and an output shaft of the driving motor 9 is provided with a washing brush. The fixed frame is arranged on the lifting end of the lifting device 8, and the lifting device 8 is arranged on the vacuum belt conveyor 6. Two driving motors 9 are installed on each fixing frame, a washing brush is installed on an output shaft of each driving motor 9, and the rotating directions of the two driving motors 9 are opposite.
Example 2: an online pickling system for 6 filter cloth of a thermal power plant flue gas desulfurization vacuum belt conveyor comprises a hydrochloric acid storage tank 2 and a plurality of sets of cleaning units, wherein each cleaning unit comprises a pickling nozzle 7 and a filtrate receiving disc 10, the pickling nozzle 7 is positioned above the filter cloth of the vacuum belt conveyor 6, the pickling nozzle 7 is connected and communicated with the hydrochloric acid storage tank 2 through a liquid supply pipe 11, and the liquid supply pipe 11 is provided with a valve 5 and an acid supply pump 4; the filtrate receiving tray 10 is positioned below the filter cloth of the vacuum belt conveyor 6, and the filtrate receiving tray 10 is communicated with the hydrochloric acid storage tank 2 through a liquid return pipe 3.
The pickling nozzle 7 is arranged on a fixing frame, the fixing frame is further provided with a driving motor 9, and an output shaft of the driving motor 9 is provided with a washing brush. The fixed frame is arranged on the lifting end of the lifting device 8, and the lifting device 8 is arranged on the vacuum belt conveyor 6. Two driving motors 9 are installed on each fixing frame, a washing brush is installed on an output shaft of each driving motor 9, and the rotating directions of the two driving motors 9 are opposite. The hydrochloric acid storage tank 2 is internally provided with a vertically arranged partition board 1, the hydrochloric acid storage tank 2 is divided into two cabins by the partition board 1, one cabin is communicated with the liquid supply pipe 11, and the other cabin is communicated with the liquid return pipe 3.
The working principle of one embodiment of the utility model is as follows: before the filter cloth of the vacuum belt conveyor is washed, the vacuum belt conveyor is started, the rotating speed of the filter cloth is adjusted to the lowest speed, then the filter cloth acid washing acid supply pump 4 is started, the filter cloth is continuously washed by the efficient backflushing acid washing nozzle 7 arranged on the vacuum belt conveyor, and meanwhile, the filter cloth is washed by the efficient filter cloth washing brush arranged on the rear side of the acid washing nozzle 7, deep impurities on the surface of the filter cloth and in a pore channel are removed, and the filter cloth washing and acid washing are achieved.
Claims (5)
1. The on-line pickling system for the filter cloth of the thermal power plant flue gas desulfurization vacuum belt conveyor is characterized by comprising a hydrochloric acid storage tank (2) and a plurality of sets of cleaning units, wherein each cleaning unit comprises a pickling nozzle (7) and a filtrate receiving disc (10), the pickling nozzle (7) is positioned above the filter cloth of the vacuum belt conveyor (6), the pickling nozzle (7) is connected and communicated with the hydrochloric acid storage tank (2) through a liquid supply pipe (11), and a valve (5) and an acid supply pump (4) are arranged on the liquid supply pipe (11); the filtrate receiving tray (10) is positioned below the filter cloth of the vacuum belt conveyor (6), and the filtrate receiving tray (10) is communicated with the hydrochloric acid storage tank (2) through the liquid return pipe (3).
2. The on-line pickling system for the thermal power plant flue gas desulfurization vacuum belt conveyor filter cloth is characterized in that a pickling nozzle (7) is installed on a fixing frame, a driving motor (9) is further installed on the fixing frame, and a washing brush is arranged on an output shaft of the driving motor (9).
3. The on-line pickling system for the thermal power plant flue gas desulfurization vacuum belt conveyor filter cloth as recited in claim 2, characterized in that the fixing frame is installed on the lifting end of the lifting device (8), and the lifting device (8) is installed on the vacuum belt conveyor (6).
4. The on-line pickling system for the thermal power plant flue gas desulfurization vacuum belt conveyor filter cloth is characterized in that two driving motors (9) are mounted on each fixing frame, a washing brush is mounted on an output shaft of each driving motor (9), and the two driving motors (9) are opposite in rotation direction.
5. The on-line pickling system for the thermal power plant flue gas desulfurization vacuum belt conveyor filter cloth is characterized in that a vertically arranged partition plate (1) is arranged in the hydrochloric acid storage tank (2), the hydrochloric acid storage tank (2) is divided into two cabins by the partition plate (1), one cabin is communicated with the liquid supply pipe (11), and the other cabin is communicated with the liquid return pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122887325.4U CN216571920U (en) | 2021-11-23 | 2021-11-23 | Online pickling system of flue gas desulfurization vacuum belt feeder filter cloth of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122887325.4U CN216571920U (en) | 2021-11-23 | 2021-11-23 | Online pickling system of flue gas desulfurization vacuum belt feeder filter cloth of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216571920U true CN216571920U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122887325.4U Active CN216571920U (en) | 2021-11-23 | 2021-11-23 | Online pickling system of flue gas desulfurization vacuum belt feeder filter cloth of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216571920U (en) |
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2021
- 2021-11-23 CN CN202122887325.4U patent/CN216571920U/en active Active
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