CN212680290U - Slurry purification water collection system based on filter cloth dehydrator - Google Patents
Slurry purification water collection system based on filter cloth dehydrator Download PDFInfo
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- CN212680290U CN212680290U CN202020539837.4U CN202020539837U CN212680290U CN 212680290 U CN212680290 U CN 212680290U CN 202020539837 U CN202020539837 U CN 202020539837U CN 212680290 U CN212680290 U CN 212680290U
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- gypsum
- filter cloth
- water
- rotating shafts
- filter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000004744 fabric Substances 0.000 title claims abstract description 65
- 239000002002 slurry Substances 0.000 title claims abstract description 17
- 238000000746 purification Methods 0.000 title claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 87
- 239000010440 gypsum Substances 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 31
- 230000018044 dehydration Effects 0.000 claims abstract description 28
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 28
- 239000000706 filtrate Substances 0.000 claims abstract description 26
- 238000011010 flushing procedure Methods 0.000 claims abstract description 19
- 238000005406 washing Methods 0.000 claims description 15
- 238000004064 recycling Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003795 desorption Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The utility model discloses a slurry purifying and water collecting system based on a filter cloth dehydrator, the filter cloth dehydrator comprises a filter cloth and two belt rotating shafts, the filter cloth is of an annular structure, wherein the filter cloth bypasses two belt rotating shafts, a gypsum dehydration area, a filtered liquid dehydration area and a gypsum flushing area are divided between the two belt rotating shafts, the gypsum dehydration area, the filtered liquid dehydration area and the gypsum flushing area are sequentially distributed along the movement direction of the filter cloth above, the vacuum box is positioned between the two belt rotating shafts, the filter cloth surrounds the periphery of the vacuum box, and the top opening of the vacuum box is contacted with the bottom of the upper half part of the filter cloth, a gypsum water spray head is arranged in the gypsum dehydration area, a filtrate spray head is arranged in the filtrate dehydration area, a flushing spray head is arranged in the gypsum flushing area, the system can realize solid-liquid separation of filtrate water and low-density slurry while meeting the requirement of normal gypsum removal.
Description
Technical Field
The utility model belongs to the technical field of energy-concerving and environment-protective, a thick liquid purifies receives water system based on filter cloth hydroextractor is related to.
Background
In the wet desulphurization process of the thermal power plant under the low-load working condition of the unit, the problem of poor water balance of a unit desulphurization system can occur, namely the water substitution amount of the system is larger than the evaporation amount of the system, so that the normal washing of a demister is influenced, and the long-term operation can cause the scaling, even blockage and collapse of the demister and influence the operation safety of the unit; in addition, the desulfurization system may cause the slurry of the absorption tower to deteriorate due to poor water quality of supplemented water or long-term abnormal operation and other factors, a large amount of slurry needing replacement or waste is generated, and the deteriorated slurry has more impurities, cannot be recycled and has high treatment difficulty, so that great treatment difficulty is brought to power production.
The solid-liquid separation equipment of the existing vacuum belt dehydrator is mainly used for dehydrating large-particle gypsum, the applicability of the device to low-density gypsum slurry is poor, the blockage is easy to occur, the filtering precision is low, and the device cannot be suitable for extracting clear water in filtrate water, deteriorated slurry or low-density gypsum slurry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a thick liquid purifies receives water system based on filter cloth hydroextractor, this system can realize the solid-liquid separation of filtrate water and low density thick liquid when satisfying normal gypsum desorption effect.
In order to achieve the purpose, the slurry purifying and water collecting system based on the filter cloth dehydrator comprises the filter cloth dehydrator, a vacuum box, a gypsum cyclone, a filtrate buffer box and a flushing water tank;
the filter cloth dehydrator comprises filter cloth and two belt rotating shafts, the filter cloth is of an annular structure, wherein the filter cloth bypasses the two belt rotating shafts, the two belt rotating shafts are divided into a gypsum dehydration area, a filter liquor dehydration area and a gypsum washing area, the gypsum dehydration area, the filter liquor dehydration area and the gypsum washing area are sequentially distributed along the motion direction of the filter cloth above, a vacuum box is positioned between the two belt rotating shafts, the filter cloth surrounds the periphery of the vacuum box, the top opening of the vacuum box is contacted with the bottom of the upper half part of the filter cloth, a gypsum water spray head is arranged in the gypsum dehydration area, a filter liquor spray head is arranged in the filter liquor dehydration area, a washing spray head is arranged in the gypsum washing area, the gypsum water spray head, the filter liquor spray head and the washing spray head are positioned above the filter cloth, a gypsum cyclone is communicated with the inlet of the gypsum water spray head, the outlet of the filter liquor buffer box is communicated with the, the outlet of the flushing water tank is communicated with the inlet of the flushing water spray head.
The gypsum collecting device further comprises a gypsum storehouse for collecting gypsum on the filter cloth, wherein the gypsum storehouse is positioned below the filter cloth dehydrator.
The vacuum pump is characterized by further comprising a vacuum pump, a steam-water separator and a recycling water tank, wherein an inlet of the steam-water separator is communicated with an outlet at the bottom of the vacuum tank, a liquid outlet of the steam-water separator is communicated with the recycling water tank, and a gas outlet of the steam-water separator is communicated with an inlet of the vacuum pump.
The utility model discloses following beneficial effect has:
slurry purifies receives water system when concrete operation based on filter cloth hydroextractor, earlier spray the gypsum water on the filter cloth, and under the effect of vacuum chamber suction, form the porous gypsum layer of one deck on the filter cloth, spray the filtrate on the gypsum layer again, and under the effect of vacuum chamber suction, carry out the one-level filtration to the filtrate through the gypsum layer, rethread filter cloth carries out the second grade filtration to the filtrate, realize the solid-liquid separation of filtrate water and low density thick liquid, thereby when satisfying normal gypsum desorption effect, realize the solid-liquid separation of filtrate water and low density thick liquid, compare in traditional vacuum belt hydroextractor, the utility model discloses a functional is abundanter, possesses effects such as handling filtrate water, low concentration gypsum thick liquid, rotten thick liquid and waste water. The utility model discloses a degree of depth is administered the meaning and is still lain in the double filtration through gypsum layer and filter cloth, can reduce the solid content in the filtrating aquatic to the process water requirement within range, satisfies the defroster and washes or process water slurrying replaces the use, reaches the purpose of optimizing desulfurization system water balance.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Wherein, 1 is a gypsum cyclone, 2 is a filtrate buffer tank, 3 is a flushing water tank, 4 is a vacuum tank, 5 is a belt rotating shaft, 6 is a vacuum pump, 7 is a steam-water separator, 8 is a gypsum warehouse, 9 is a filter cloth dehydrator, 10 is a gypsum dehydration area, 11 is a filtrate dehydration area, 12 is a gypsum flushing area, and 13 is a recycling water tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the slurry purifying and water collecting system based on the filter cloth dehydrator of the present invention comprises a filter cloth dehydrator 9, a vacuum box 4, a gypsum cyclone 1, a filtrate buffer tank 2 and a flushing water tank 3; the filter cloth dehydrator 9 comprises filter cloth and two belt rotating shafts 5, the filter cloth is of an annular structure, wherein the filter cloth bypasses the two belt rotating shafts 5, the two belt rotating shafts 5 are divided into a gypsum dehydration region 10, a filter liquid dehydration region 11 and a gypsum washing region 12, the gypsum dehydration region 10, the filter liquid dehydration region 11 and the gypsum washing region 12 are sequentially distributed along the motion direction of the filter cloth above, a vacuum box 4 is positioned between the two belt rotating shafts 5, the filter cloth surrounds the vacuum box 4, the top opening of the vacuum box 4 is contacted with the bottom of the upper half part of the filter cloth, a gypsum water spray head is arranged in the gypsum dehydration region 10, a filter liquid spray head is arranged in the filter liquid dehydration region 11, a washing spray head is arranged in the gypsum washing region 12, wherein the gypsum water spray head, the filter liquid spray head and the washing spray head are positioned above the filter cloth, a gypsum cyclone 1 is communicated with the inlet of the gypsum spray head, the outlet of the filtering liquid buffer tank 2 is communicated with the inlet of the filtering liquid spray head, and the outlet of the flushing water tank 3 is communicated with the inlet of the flushing water spray head.
The utility model also comprises a vacuum pump 6, a steam-water separator 7, a recycling water tank 13 and a gypsum storehouse 8 for collecting gypsum on the filter cloth, wherein the gypsum storehouse 8 is positioned below the filter cloth dehydrator 9; an inlet of the steam-water separator 7 is communicated with an outlet at the bottom of the vacuum box 4, a liquid outlet of the steam-water separator 7 is communicated with a reuse water tank 13, and a gas outlet of the steam-water separator 7 is communicated with an inlet of the vacuum pump 6.
The utility model discloses a concrete working process does:
gypsum water output by the gypsum cyclone 1 is sprayed onto the filter cloth through a gypsum water spray nozzle, under the suction action of the vacuum box 4, water in the gypsum water enters the vacuum box 4 after being filtered by the filter cloth in the gypsum dehydration area 10, gypsum in the gypsum water is attached to the filter cloth, so that a porous gypsum layer is formed on the filter cloth, the gypsum layer enters the filtrate dehydration area 11 along with the filter cloth under the drive of the belt rotating shaft 5, filtrate output by the filtrate buffer box 2 is sprayed onto the gypsum layer through the filtrate spray nozzle, then under the suction action of the vacuum box 4, the filtrate enters the vacuum box 4 after being sequentially filtered by the gypsum layer and the filter cloth, meanwhile, most of the filtrate is attached to the surface of the gypsum layer or the gypsum layer, and the rest particles are attached to the surface of the filter cloth, so as to realize solid-liquid separation of the filtrate; wherein the travel distance of the gypsum slurry in the gypsum dewatering area 10 is 4m-6 m; the advancing distance of the gypsum layer in the filtrate dewatering area is 6-8 m;
the gypsum layer follows the filter cloth and enters the gypsum flushing area 12, and simultaneously flushing water output by the flushing water tank 3 is sprayed onto the gypsum layer through the flushing water spray head so as to reduce the concentration of chloride ions in the gypsum, wherein part of the spraying water enters the vacuum tank 4 under the suction action of the vacuum tank 4, and the rest spraying water and the gypsum layer continue to advance along with the filter cloth, and are peeled off when the filter cloth turns downwards and fall into the gypsum warehouse 8 under the action of gravity.
Water in the vacuum box 4 enters into the steam-water separator 7 under the effect of vacuum pump 6 and carries out gas-liquid separation, wherein the liquid of separating enters into retrieval and utilization water tank 13, the gas of separating enters into vacuum pump 6, water in the retrieval and utilization water tank 13 is through physical treatment, guarantee to filter recovery liquid solid content and be within 0.1%, satisfy process water substitution etc. can satisfy the moisturizing of desulfurization system, realize the running mode of more economizing on water when guaranteeing desulfurization system's water balance, it has important meaning to desulfurization system's safe and stable operation.
Claims (3)
1. A slurry purification water collection system based on a filter cloth dehydrator is characterized by comprising a filter cloth dehydrator (9), a vacuum box (4), a gypsum cyclone (1), a filtrate buffer box (2) and a flushing water tank (3);
the filter cloth dehydrator (9) comprises a filter cloth and two belt rotating shafts (5), the filter cloth is of an annular structure, wherein the filter cloth bypasses the two belt rotating shafts (5), a gypsum dehydration region (10), a filter liquid dehydration region (11) and a gypsum washing region (12) are divided between the two belt rotating shafts (5), the gypsum dehydration region (10), the filter liquid dehydration region (11) and the gypsum washing region (12) are sequentially distributed along the motion direction of the filter cloth above, the vacuum box (4) is positioned between the two belt rotating shafts (5), the filter cloth surrounds the vacuum box (4), a top opening of the vacuum box (4) is in contact with the bottom of the upper half part in the filter cloth, gypsum water spray nozzles are arranged in the gypsum dehydration region (10), filter liquid spray nozzles are arranged in the filter liquid dehydration region (11), and washing spray nozzles are arranged in the gypsum washing region (12), the gypsum cyclone (1) is communicated with the inlet of the gypsum water spray head, the outlet of the filtrate buffer tank (2) is communicated with the inlet of the filtrate spray head, and the outlet of the flushing water tank (3) is communicated with the inlet of the flushing water spray head.
2. The slurry purifying and water collecting system based on the filter cloth dehydrator according to claim 1, further comprising a gypsum bank (8) for collecting gypsum on the filter cloth, wherein the gypsum bank (8) is located below the filter cloth dehydrator (9).
3. The slurry purifying and water collecting system based on the filter cloth dehydrator according to claim 2, further comprising a vacuum pump (6), a steam-water separator (7) and a recycling water tank (13), wherein an inlet of the steam-water separator (7) is communicated with an outlet at the bottom of the vacuum tank (4), a liquid outlet of the steam-water separator (7) is communicated with the recycling water tank (13), and a gas outlet of the steam-water separator (7) is communicated with an inlet of the vacuum pump (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539837.4U CN212680290U (en) | 2020-04-13 | 2020-04-13 | Slurry purification water collection system based on filter cloth dehydrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539837.4U CN212680290U (en) | 2020-04-13 | 2020-04-13 | Slurry purification water collection system based on filter cloth dehydrator |
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| Publication Number | Publication Date |
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| CN212680290U true CN212680290U (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020539837.4U Active CN212680290U (en) | 2020-04-13 | 2020-04-13 | Slurry purification water collection system based on filter cloth dehydrator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346416A (en) * | 2020-04-13 | 2020-06-30 | 华能国际电力股份有限公司 | Slurry purifying and water collecting system and method based on filter cloth dehydrator |
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2020
- 2020-04-13 CN CN202020539837.4U patent/CN212680290U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346416A (en) * | 2020-04-13 | 2020-06-30 | 华能国际电力股份有限公司 | Slurry purifying and water collecting system and method based on filter cloth dehydrator |
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