CN219662962U - Device for reducing concentration of chloride ions in desulfurization slurry - Google Patents
Device for reducing concentration of chloride ions in desulfurization slurry Download PDFInfo
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- CN219662962U CN219662962U CN202320222919.XU CN202320222919U CN219662962U CN 219662962 U CN219662962 U CN 219662962U CN 202320222919 U CN202320222919 U CN 202320222919U CN 219662962 U CN219662962 U CN 219662962U
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- 239000002002 slurry Substances 0.000 title claims abstract description 115
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 102
- 230000023556 desulfurization Effects 0.000 title claims abstract description 102
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 title claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 199
- 239000002351 wastewater Substances 0.000 claims abstract description 114
- 239000010802 sludge Substances 0.000 claims abstract description 94
- 238000005352 clarification Methods 0.000 claims abstract description 85
- 239000003245 coal Substances 0.000 claims abstract description 46
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 37
- 239000010440 gypsum Substances 0.000 claims abstract description 37
- 239000002893 slag Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims description 57
- 238000011010 flushing procedure Methods 0.000 claims description 32
- 230000001502 supplementing effect Effects 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 24
- 238000005507 spraying Methods 0.000 description 22
- 208000028659 discharge Diseases 0.000 description 20
- 238000001816 cooling Methods 0.000 description 11
- 238000000926 separation method Methods 0.000 description 11
- 239000000428 dust Substances 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 238000001556 precipitation Methods 0.000 description 9
- 230000001629 suppression Effects 0.000 description 9
- 238000005536 corrosion prevention Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 230000029087 digestion Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 239000010808 liquid waste Substances 0.000 description 4
- 230000003020 moisturizing effect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- -1 chlorine ions Chemical class 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of limestone-gypsum wet flue gas desulfurization systems, in particular to a device for reducing the concentration of chloride ions in desulfurization slurry, which comprises a clarification tank, a wastewater cyclone tank and a water outlet tank; the waste water dewatering device comprises a settling pond, a gypsum cyclone, a sludge pump, a waste water cyclone box and a dewatering belt conveyor, wherein the sludge level meter is arranged in the settling pond, the settling pond is connected with the output end of the gypsum cyclone, the first output end of the settling pond is connected with the input end of the sludge pump, one output end of the sludge pump is connected with the waste water cyclone box, and the waste water cyclone box is connected with the dewatering belt conveyor through the cyclone pump; the second output end of the clarification tank is connected with the water outlet tank, and the water outlet tank is respectively connected with the pulp throwing tank, the slag bin and the coal mill through a water outlet pump. In practical application, the device for reducing the concentration of chloride ions in the desulfurization slurry is used together with a wastewater treatment system to increase the discharge amount of the slurry in the desulfurization system, so that the concentration of chloride ions in the slurry can be effectively regulated and controlled.
Description
Technical Field
The utility model relates to the technical field of limestone-gypsum wet flue gas desulfurization systems, in particular to a device for reducing chloride ion concentration in desulfurization slurry.
Background
In the limestone-gypsum wet flue gas desulfurization process of a thermal power plant, 0.01% -0.2% of chlorine elements contained in the coal burning of a part of power plants enter a desulfurization system along with flue gas after combustion, and due to the cyclic use of slurry in the desulfurization system, chlorine ions are gradually enriched in the desulfurization system, so that the concentration of the chlorine ions in the slurry in the desulfurization system is seriously out of standard, and the concentration of the chlorine ions in the desulfurization slurry is out of standard, so that corrosion prevention damage and corrosion of system equipment can be caused, the desulfurization efficiency is reduced, the gypsum scaling tendency is increased, the quality of gypsum is influenced, and the power consumption of plants is increased.
Aiming at the problem that the concentration of chloride ions in desulfurization slurry exceeds the standard, the conventional measures and methods mainly adopt the means of increasing the operation load of a dehydration system, continuously putting a wastewater treatment system into operation, replacing the slurry and the like to reduce the concentration of chloride ions in the slurry of an absorption tower. The most effective way to reduce the concentration of chloride ions in the desulfurization slurry is to continuously put into operation the wastewater treatment system, however, in the practical application process, the content of chlorine-containing elements of different types of fire coal is different, and the design treatment capacity of the wastewater treatment system is limited, so that the wastewater treatment system has great limitation on the regulation and control of the concentration of chloride ions in the slurry, and further, the desulfurization system cannot operate economically and reliably.
Therefore, there is a need for a device for reducing the concentration of chloride ions in a desulfurization slurry that can effectively control the concentration of chloride ions in the slurry by increasing the discharge of the slurry in the desulfurization system in combination with a wastewater treatment system.
Disclosure of Invention
The utility model provides a device for reducing the concentration of chloride ions in desulfurization slurry, which aims to solve the problems that when a wastewater treatment system in a thermal power plant cannot effectively cope with the combustion of different types of coal, the concentration of chloride ions in the desulfurization slurry is required to be regulated and controlled, corrosion resistance and corrosion of desulfurization system equipment are caused, desulfurization efficiency is reduced, gypsum scaling tendency is increased, quality of gypsum is influenced and plant power consumption is increased.
The technical scheme of the utility model is as follows:
a device for reducing chloride ion concentration in desulfurization slurry comprises a clarification tank, a wastewater cyclone tank and a water outlet tank;
the waste water dewatering device comprises a settling pond, a gypsum cyclone, a sludge pump, a waste water cyclone box and a dewatering belt conveyor, wherein the sludge level meter is arranged in the settling pond, the settling pond is connected with the output end of the gypsum cyclone, the first output end of the settling pond is connected with the input end of the sludge pump, one output end of the sludge pump is connected with the waste water cyclone box, and the waste water cyclone box is connected with the dewatering belt conveyor through the cyclone pump;
the second output end of the clarification tank is connected with the water outlet tank, and the water outlet tank is respectively connected with the pulp throwing tank, the slag bin and the coal mill through a water outlet pump.
Preferably, an output end of the water outlet pump is connected with a spraying pipeline of the slag bin, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill.
Preferably, the other output end of the sludge pump is connected with the clarifier.
Preferably, a process water flushing device is arranged between the first output end of the clarification tank and the sludge pump, and a process water flushing device is arranged between the wastewater cyclone tank and the cyclone pump.
Preferably, the filter press water flushing device further comprises a filter press water pit, wherein the input end of the filter press water pit is connected with the waste water end of the process water flushing device, and the output end of the filter press water pit is connected with the clarifier through a filter press water pit pump.
Preferably, the wastewater cyclone tank and the water outlet tank are both connected with process water supplementing equipment.
Preferably, a mud level meter is arranged in the wastewater cyclone tank.
Preferably, a liquid level meter is arranged in the water outlet tank.
Preferably, the first output end of the clarifier is disposed at the bottom and the second output end is disposed on the sidewall near the top.
Preferably, a pH adjusting tank is arranged between the second output end of the clarification tank and the water outlet tank.
According to the technical scheme, based on the device for reducing the concentration of chloride ions in the desulfurization slurry, in the practical application process, the slurry from the gypsum cyclone can be precipitated and separated through the clarification tank, when the mud level meter detects that the concentration of the precipitated mud in the clarification tank reaches a set value, the mud is conveyed into the wastewater cyclone tank through the mud pump, and then when the concentration of the mud in the wastewater cyclone tank reaches a certain value, the mud is conveyed into the dewatering belt conveyor through the cyclone pump for removal; when the liquid level in the clarification tank reaches a set height, the wastewater in the clarification tank overflows into the water outlet tank, and when the liquid level in the water outlet tank reaches a certain value, the wastewater is conveyed to the slag bin and the coal mill for digestion through the water outlet pump, so that the concentration of chloride ions in the desulfurization slurry is reduced in a mode of increasing the discharge treatment capacity of the slurry in the desulfurization system, and the desulfurization device has the advantages of simple structure, low input cost and good practical use effect.
Meanwhile, by using the device, under the condition that the power plant wastewater treatment system cannot effectively regulate and control the concentration of chloride ions in the desulfurization slurry, acid insoluble matters (namely main components of sludge) in the slurry can be effectively treated through the clarification tank; further, when the treatment capacity of the desulfurization slurry is not large, the desulfurization slurry can also be used as a substitute for a wastewater treatment system, so that the treatment cost is saved to the greatest extent.
Through setting up an output of water pump with the spray piping connection in sediment storehouse, an output with the spray piping connection of the batcher of coal pulverizer, when taking in thick liquid waste water, can also effectively press down the dirt to the coal bunker, cool down the entrance to the batcher of coal pulverizer.
Drawings
FIG. 1 is a schematic structural view of an apparatus for reducing the concentration of chloride ions in a desulfurization slurry.
Description of the reference numerals
A clarifier 1; a sludge pump 2; a waste water cyclone tank 3; a swirl pump 4; a dewatering belt conveyor 5;
a water outlet tank 6; a water outlet pump 7; a pulp throwing pool 8; a slag bin 9; a coal mill 10; a filter-press water pit pump 11;
press filtration of the water pit 12.
Detailed Description
The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
In the description of the present utility model, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The term "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, a possible presence or addition of one or more other features, elements, components, and/or combinations thereof.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The utility model provides a device for reducing the concentration of chloride ions in desulfurization slurry, which is shown in figure 1 and comprises a clarifier 1, a wastewater cyclone tank 3 and a water outlet tank 6;
a mud level meter is arranged in the clarification tank 1, the clarification tank 1 is connected with the output end of the gypsum cyclone, the first output end of the clarification tank 1 is connected with the input end of the sludge pump 2, one output end of the sludge pump 2 is connected with the wastewater cyclone tank 3, and the wastewater cyclone tank 3 is connected with the dewatering belt conveyor 5 through the cyclone pump 4;
the second output end of the clarification tank 1 is connected with the water outlet tank 6, and the water outlet tank 6 is respectively connected with the pulp throwing tank 8, the slag bin 9 and the coal mill 10 through the water outlet pump 7.
According to the technical scheme, based on the device for reducing the chloride ion concentration in the desulfurization slurry, in the practical application process, the slurry from the gypsum cyclone can be precipitated and separated through the clarification tank 1, when the mud level meter detects that the concentration of the precipitated mud in the clarification tank 1 reaches a set value, the mud is conveyed into the wastewater cyclone tank 3 through the mud pump 2, and then when the concentration of the mud in the wastewater cyclone tank 3 reaches a certain value, the mud is conveyed into the dewatering belt conveyor 5 through the cyclone pump 4 for removal; when the liquid level in the clarification tank 1 reaches a set height, the wastewater in the clarification tank 2 overflows into the water outlet tank 6, and when the liquid level in the water outlet tank 6 reaches a certain value, the wastewater is conveyed to the slag bin 8 and the coal mill 9 for digestion through the water outlet pump 7, so that the concentration of chloride ions in the desulfurization slurry is reduced in a mode of increasing the discharge treatment capacity of the slurry in the desulfurization system, and the desulfurization device has the advantages of simple structure, low input cost and good practical use effect.
In a preferred embodiment, an output end of the water outlet pump 7 is connected with a spraying pipeline of the slag bin 9, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill 10, so that in the practical application process, slurry wastewater precipitated and filtered by the clarifier 1 can be conveyed to the spraying pipeline of the slag bin 9 and the spraying pipeline of the feeder of the coal mill 10 for digestion according to dust suppression of the slag bin 9 and cooling requirements of the feeder of the coal mill 10, and the discharge amount of the slurry wastewater is increased and the original dust suppression and cooling water is saved on the basis of the original device of a power plant. Of course, the output end of the water outlet pump 7 can be connected with other water using equipment of the power plant, so that the consumption of the slurry wastewater is further improved.
In a more preferred embodiment, the water outlet tank 6 is connected with a process water replenishing device, so that when the slurry waste water amount in the water outlet tank 6 cannot meet the cooling requirement of the feeder of the coal mill 10, water replenishing is performed in time. Wherein, when the slag bin 9 and the feeder of the coal mill 10 do not need water or can not effectively consume a large amount of slurry waste water, and the liquid level in the water outlet tank 6 still reaches a certain height, the slurry waste water can be directly discharged into the original slurry throwing pool 8 of the power plant, so as to ensure that the whole device can continuously treat slurry. In a specific embodiment, the liquid level in the water outlet tank 6 is measured by the liquid level meter in the water outlet tank 6, and by using the liquid level meter, the liquid level when the slurry waste water is required to be discharged, the liquid level when the discharge is stopped and the liquid level when the slurry is required to be discharged into the slurry throwing tank can be accurately measured, so that the slag bin 9 is better dust-suppressed, the feeder of the coal mill 10 is cooled, and the whole device is ensured to continuously process the desulfurization slurry.
In the device for reducing the concentration of chloride ions in the desulfurization slurry, in a preferred embodiment, the other output end of the sludge pump 2 is connected with the clarifier 1, so that in practical application, sludge precipitation and blockage at the bottom of the clarifier 1 can be prevented by the way that the sludge pump 2 pumps back flow.
In a preferred embodiment of the device for reducing chloride ion concentration in desulfurization slurry, a process water flushing device is arranged between the first output end of the clarifier 1 and the sludge pump 2, and is used for cleaning the sludge pump 2 at a set interval so as to prevent the sludge pump 2 from being blocked; a process water flushing device is arranged between the wastewater cyclone tank 3 and the cyclone pump 4 and is used for cleaning the cyclone pump 4 at set intervals so as to prevent the cyclone pump 4 from being blocked.
In a more preferred embodiment, the device for reducing the concentration of chloride ions in the desulfurization slurry further comprises a press-filtering water pit 12, wherein the input end of the press-filtering water pit 12 is connected with the waste water end of the process water flushing device, and the output end of the press-filtering water pit 12 is connected with the clarifier 1 through a press-filtering water pit pump 11, so that in the practical application process, the sludge waste water flushed by the process water flushing device can be conveyed into the clarifier 1 again for separation and precipitation.
In the device for reducing the concentration of chloride ions in the desulfurization slurry, in a preferred embodiment, the wastewater cyclone tank 3 is connected with a process water supplementing device, and further, a mud level meter is further arranged in the wastewater cyclone tank 3, so that the mud concentration in the wastewater cyclone tank 3 can be measured in real time by using the mud level meter in the actual application process, and when the mud concentration in the wastewater cyclone tank 3 reaches a set discharge value, the mud is conveyed to the dewatering belt conveyor 5 for removal by the cyclone pump 4; when the sludge concentration in the wastewater cyclone tank 3 does not reach the set discharge value, water can be supplemented by the process water supplementing equipment, so that the sludge concentration in the wastewater cyclone tank 3 reaches the set discharge value, and the sludge treatment efficiency is improved.
In a preferred embodiment, the first output end of the clarifier 1 is disposed at the bottom, and the second output end is disposed on the side wall near the top, so as to facilitate the discharge of settled sludge, and the settled slurry wastewater overflows from the top into the water outlet tank 6. In a more preferred embodiment, a pH adjusting tank is arranged between the second output end of the clarifier 1 and the water outlet tank 6, so that the pH value of the slurry wastewater settled and separated from the clarifier 1 can be further ensured to be in a proper range.
According to a first embodiment of the utility model, the device for reducing the concentration of chloride ions in the desulfurization slurry comprises a clarifier 1, a wastewater cyclone tank 3 and a water outlet tank 6;
a mud level meter is arranged in the clarification tank 1, the clarification tank 1 is connected with the output end of the gypsum cyclone, the first output end of the clarification tank 1 is connected with the input end of the sludge pump 2, one output end of the sludge pump 2 is connected with the wastewater cyclone tank 3, and the wastewater cyclone tank 3 is connected with the dewatering belt conveyor 5 through the cyclone pump 4; the second output end of the clarification tank 1 is connected with the water outlet tank 6, the water outlet tank 6 is respectively connected with the pulp throwing tank 8, the slag bin 9 and the coal mill 10 through the water outlet pump 7, the first output end of the clarification tank 1 is arranged at the bottom, and the second output end is arranged on the side wall close to the top;
an output end of the water outlet pump 7 is connected with a spraying pipeline of the slag bin 9, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill 10.
According to a second embodiment of the utility model, the device for reducing the concentration of chloride ions in the desulfurization slurry comprises a clarifier 1, a wastewater cyclone tank 3 and a water outlet tank 6;
a mud level meter is arranged in the clarification tank 1, the clarification tank 1 is connected with the output end of the gypsum cyclone, the first output end of the clarification tank 1 is connected with the input end of the sludge pump 2, one output end of the sludge pump 2 is connected with the wastewater cyclone tank 3, and the wastewater cyclone tank 3 is connected with the dewatering belt conveyor 5 through the cyclone pump 4; the second output end of the clarification tank 1 is connected with the water outlet tank 6, the water outlet tank 6 is respectively connected with the pulp throwing tank 8, the slag bin 9 and the coal mill 10 through the water outlet pump 7, the first output end of the clarification tank 1 is arranged at the bottom, and the second output end is arranged on the side wall close to the top;
an output end of the water outlet pump 7 is connected with a spraying pipeline of the slag bin 9, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill 10; the other output end of the sludge pump 2 is connected with the clarifier 1.
According to a third embodiment of the utility model, the device for reducing the concentration of chloride ions in the desulfurization slurry comprises a clarifier 1, a wastewater cyclone tank 3 and a water outlet tank 6;
a mud level meter is arranged in the clarification tank 1, the clarification tank 1 is connected with the output end of the gypsum cyclone, the first output end of the clarification tank 1 is connected with the input end of the sludge pump 2, one output end of the sludge pump 2 is connected with the wastewater cyclone tank 3, and the wastewater cyclone tank 3 is connected with the dewatering belt conveyor 5 through the cyclone pump 4; the second output end of the clarification tank 1 is connected with the water outlet tank 6, the water outlet tank 6 is respectively connected with the pulp throwing tank 8, the slag bin 9 and the coal mill 10 through the water outlet pump 7, the first output end of the clarification tank 1 is arranged at the bottom, and the second output end is arranged on the side wall close to the top;
an output end of the water outlet pump 7 is connected with a spraying pipeline of the slag bin 9, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill 10; the other output end of the sludge pump 2 is connected with the clarifier 1; a process water flushing device is arranged between the first output end of the clarification tank 1 and the sludge pump 2, and a process water flushing device is arranged between the wastewater cyclone tank 3 and the cyclone pump 4.
According to a fourth embodiment of the utility model, the device for reducing the concentration of chloride ions in the desulfurization slurry comprises a clarifier 1, a wastewater cyclone tank 3 and a water outlet tank 6;
a mud level meter is arranged in the clarification tank 1, the clarification tank 1 is connected with the output end of the gypsum cyclone, the first output end of the clarification tank 1 is connected with the input end of the sludge pump 2, one output end of the sludge pump 2 is connected with the wastewater cyclone tank 3, and the wastewater cyclone tank 3 is connected with the dewatering belt conveyor 5 through the cyclone pump 4; the second output end of the clarification tank 1 is connected with the water outlet tank 6, the water outlet tank 6 is respectively connected with the pulp throwing tank 8, the slag bin 9 and the coal mill 10 through the water outlet pump 7, the first output end of the clarification tank 1 is arranged at the bottom, and the second output end is arranged on the side wall close to the top;
an output end of the water outlet pump 7 is connected with a spraying pipeline of the slag bin 9, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill 10; the other output end of the sludge pump 2 is connected with the clarifier 1; a process water flushing device is arranged between the first output end of the clarification tank 1 and the sludge pump 2, and a process water flushing device is arranged between the wastewater cyclone tank 3 and the cyclone pump 4; the filter-press water flushing device also comprises a filter-press water pit 12, wherein the input end of the filter-press water pit 12 is connected with the waste water end of the process water flushing device, and the output end of the filter-press water pit 12 is connected with the clarifier 1 through a filter-press water pit pump 11.
According to a fifth embodiment of the utility model, the device for reducing the concentration of chloride ions in the desulfurization slurry comprises a clarifier 1, a wastewater cyclone tank 3 and a water outlet tank 6;
a mud level meter is arranged in the clarification tank 1, the clarification tank 1 is connected with the output end of the gypsum cyclone, the first output end of the clarification tank 1 is connected with the input end of the sludge pump 2, one output end of the sludge pump 2 is connected with the wastewater cyclone tank 3, and the wastewater cyclone tank 3 is connected with the dewatering belt conveyor 5 through the cyclone pump 4; the second output end of the clarification tank 1 is connected with the water outlet tank 6, the water outlet tank 6 is respectively connected with the pulp throwing tank 8, the slag bin 9 and the coal mill 10 through the water outlet pump 7, the first output end of the clarification tank 1 is arranged at the bottom, and the second output end is arranged on the side wall close to the top;
an output end of the water outlet pump 7 is connected with a spraying pipeline of the slag bin 9, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill 10; the other output end of the sludge pump 2 is connected with the clarifier 1; a process water flushing device is arranged between the first output end of the clarification tank 1 and the sludge pump 2, and a process water flushing device is arranged between the wastewater cyclone tank 3 and the cyclone pump 4; the filter-press water flushing device also comprises a filter-press water pit 12, wherein the input end of the filter-press water pit 12 is connected with the waste water end of the process water flushing device, and the output end of the filter-press water pit 12 is connected with the clarifier 1 through a filter-press water pit pump 11; the waste water cyclone tank 3 and the water outlet tank 6 are both connected with process water supplementing equipment, a mud level meter is arranged in the waste water cyclone tank 3, and a liquid level meter is arranged in the water outlet tank 6.
According to a sixth embodiment of the present utility model, the device for reducing chloride ion concentration in desulfurization slurry includes a clarifier 1, a wastewater cyclone tank 3, and a water outlet tank 6;
a mud level meter is arranged in the clarification tank 1, the clarification tank 1 is connected with the output end of the gypsum cyclone, the first output end of the clarification tank 1 is connected with the input end of the sludge pump 2, one output end of the sludge pump 2 is connected with the wastewater cyclone tank 3, and the wastewater cyclone tank 3 is connected with the dewatering belt conveyor 5 through the cyclone pump 4; the second output end of the clarification tank 1 is connected with the water outlet tank 6, the water outlet tank 6 is respectively connected with the pulp throwing tank 8, the slag bin 9 and the coal mill 10 through the water outlet pump 7, the first output end of the clarification tank 1 is arranged at the bottom, and the second output end is arranged on the side wall close to the top;
an output end of the water outlet pump 7 is connected with a spraying pipeline of the slag bin 9, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill 10; the other output end of the sludge pump 2 is connected with the clarifier 1; a process water flushing device is arranged between the first output end of the clarification tank 1 and the sludge pump 2, and a process water flushing device is arranged between the wastewater cyclone tank 3 and the cyclone pump 4; the filter-press water flushing device also comprises a filter-press water pit 12, wherein the input end of the filter-press water pit 12 is connected with the waste water end of the process water flushing device, and the output end of the filter-press water pit 12 is connected with the clarifier 1 through a filter-press water pit pump 11; the waste water cyclone tank 3 and the water outlet tank 6 are connected with process water supplementing equipment, a mud level meter is arranged in the waste water cyclone tank 3, and a liquid level meter is arranged in the water outlet tank 6; a pH adjusting tank is arranged between the second output end of the clarification tank 1 and the water outlet tank 6.
The present utility model will be described in detail by way of examples, but the scope of the present utility model is not limited thereto.
Example 1
As shown in figure 1, the device for reducing the chloride ion concentration in the desulfurization slurry is implemented by adopting the device for reducing the chloride ion concentration in the desulfurization slurry, and is used for increasing the discharge treatment capacity of the desulfurization slurry, and the device for reducing the chloride ion concentration in the desulfurization slurry comprises a clarifier 1, a wastewater cyclone tank 3 and a water outlet tank 6;
a mud level meter is arranged in the clarification tank 1, the clarification tank 1 is connected with the output end of the gypsum cyclone, the first output end of the clarification tank 1 is connected with the input end of the sludge pump 2, one output end of the sludge pump 2 is connected with the wastewater cyclone tank 3, and the wastewater cyclone tank 3 is connected with the dewatering belt conveyor 5 through the cyclone pump 4; the second output end of the clarification tank 1 is connected with the water outlet tank 6, the water outlet tank 6 is respectively connected with the pulp throwing tank 8, the slag bin 9 and the coal mill 10 through the water outlet pump 7, the first output end of the clarification tank 1 is arranged at the bottom, and the second output end is arranged on the side wall close to the top;
an output end of the water outlet pump 7 is connected with a spraying pipeline of the slag bin 9, and an output end of the water outlet pump is connected with a spraying pipeline of a feeder of the coal mill 10.
In the practical application process, firstly, the settling pond 1 carries out precipitation separation on slurry from a gypsum cyclone, then when the mud level meter detects that the concentration of the precipitated sludge in the settling pond 1 reaches a set value, the sludge is conveyed into the wastewater cyclone tank 3 through the sludge pump 2, and when the concentration of the sludge in the wastewater cyclone tank 3 reaches a set value, the sludge is conveyed into the dewatering belt conveyor 5 through the cyclone pump 4 for removal; when the liquid level in the clarification tank 1 reaches a set height, the wastewater in the clarification tank 1 overflows into the water outlet tank 6, and when the liquid level in the water outlet tank 6 reaches a certain value, the wastewater is conveyed to a spraying pipeline of the slag bin 9 and a spraying pipeline of a feeder of the coal mill 10 through the water outlet pump 7 for digestion, wherein when the digestion amounts of the slag bin 9 and the coal mill 10 are smaller than the overflow amount of the clarification tank 1, the wastewater can be conveyed to the original slurry throwing tank 8 of the power plant through the water outlet pump 7.
According to detection, based on the device for reducing the chloride ion concentration in the desulfurization slurry, in the practical application process, the desulfurization slurry is precipitated and separated by the clarification tank, and the slurry wastewater is digested by the slag bin and the coal mill, so that the discharge amount of the desulfurization slurry can be effectively increased, and water originally used for dust suppression and cooling can be further saved, thereby effectively preventing the problems of too high chloride ion concentration in the desulfurization slurry, corrosion prevention and damage of desulfurization system equipment, reduction of desulfurization efficiency, increase of gypsum scaling tendency, influence on the quality of gypsum and increase of plant power.
Example 2
In contrast to the embodiment according to example 1, the other output of the sludge pump 2 is connected to the clarifier 1.
According to detection, in the practical application process, the device for reducing the chloride ion concentration in the desulfurization slurry is used for carrying out precipitation separation on the desulfurization slurry through the clarification tank, and then the slurry waste water is digested through the slag bin and the coal mill, so that the discharge amount of the desulfurization slurry can be effectively increased, and water originally used for dust suppression and cooling can be further saved, thereby effectively preventing the problems of corrosion prevention damage and corrosion of desulfurization system equipment, reduction of desulfurization efficiency, increase of gypsum scaling tendency, influence on the quality of gypsum and increase of plant power consumption caused by too high chloride ion concentration in the desulfurization slurry; meanwhile, the other output end of the sludge pump is connected with the clarification tank, and the sludge at the bottom of the clarification tank can be prevented from being precipitated and blocked in a reflux way by the sludge pump.
Example 3
In contrast to the embodiment 2, a process water flushing device is arranged between the first output end of the clarifier 1 and the sludge pump 2, a process water flushing device is arranged between the wastewater cyclone tank 3 and the cyclone pump 4, and a filter-pressing water pit 12 is further included, wherein the input end of the filter-pressing water pit 12 is connected with the wastewater end of the process water flushing device, and the output end is connected with the clarifier 1 through a filter-pressing water pit pump 11.
According to detection, in the practical application process, the device for reducing the chloride ion concentration in the desulfurization slurry is used for carrying out precipitation separation on the desulfurization slurry through the clarification tank, and then the slurry waste water is digested through the slag bin and the coal mill, so that the discharge amount of the desulfurization slurry can be effectively increased, and water originally used for dust suppression and cooling can be further saved, thereby effectively preventing the problems of corrosion prevention damage and corrosion of desulfurization system equipment, reduction of desulfurization efficiency, increase of gypsum scaling tendency, influence on the quality of gypsum and increase of plant power consumption caused by too high chloride ion concentration in the desulfurization slurry; meanwhile, the other output end of the sludge pump is connected with the clarification tank, and the sludge at the bottom of the clarification tank can be prevented from being precipitated and blocked in a reflux way by the sludge pump; through setting up the process water flushing equipment, then can effectively prevent the sludge pump with the whirl pump blocks up, thereby guarantees the mud of separation in the clarifier can in time effectively get rid of, further pass through filter-pressing water pit then can further follow the sludge pump with the mud waste water that the whirl pump washed out is carried to the sedimentation separation in the clarifier.
Example 4
In contrast to the embodiment 3, the wastewater cyclone tank 3 is connected with a process water replenishing device, and a mud level meter is arranged in the wastewater cyclone tank 3.
According to detection, in the practical application process, the device for reducing the chloride ion concentration in the desulfurization slurry is used for carrying out precipitation separation on the desulfurization slurry through the clarification tank, and then the slurry waste water is digested through the slag bin and the coal mill, so that the discharge amount of the desulfurization slurry can be effectively increased, and water originally used for dust suppression and cooling can be further saved, thereby effectively preventing the problems of corrosion prevention damage and corrosion of desulfurization system equipment, reduction of desulfurization efficiency, increase of gypsum scaling tendency, influence on the quality of gypsum and increase of plant power consumption caused by too high chloride ion concentration in the desulfurization slurry; meanwhile, the other output end of the sludge pump is connected with the clarification tank, and the sludge at the bottom of the clarification tank can be prevented from being precipitated and blocked in a reflux way by the sludge pump; by arranging the process water flushing equipment, the sludge pump and the cyclone pump can be effectively prevented from being blocked, so that the sludge separated in the clarifier can be timely and effectively removed, and further the sludge wastewater flushed from the sludge pump and the cyclone pump can be further conveyed into the clarifier to be precipitated and separated through the filter-press water pit; through be provided with mud level gauge in the waste water whirl case, and be connected with the process water moisturizing equipment, then can the accurate survey the interior mud concentration of waste water whirl case to can also adjust mud concentration through moisturizing, thereby effectively improve the treatment effeciency of mud.
Example 5
In contrast to the embodiment 4, the water outlet tank 6 is connected to a process water replenishing device, and a level gauge is provided in the water outlet tank 6.
According to detection, in the practical application process, the device for reducing the chloride ion concentration in the desulfurization slurry is used for carrying out precipitation separation on the desulfurization slurry through the clarification tank, and then the slurry waste water is digested through the slag bin and the coal mill, so that the discharge amount of the desulfurization slurry can be effectively increased, and water originally used for dust suppression and cooling can be further saved, thereby effectively preventing the problems of corrosion prevention damage and corrosion of desulfurization system equipment, reduction of desulfurization efficiency, increase of gypsum scaling tendency, influence on the quality of gypsum and increase of plant power consumption caused by too high chloride ion concentration in the desulfurization slurry; meanwhile, the other output end of the sludge pump is connected with the clarification tank, and the sludge at the bottom of the clarification tank can be prevented from being precipitated and blocked in a reflux way by the sludge pump; by arranging the process water flushing equipment, the sludge pump and the cyclone pump can be effectively prevented from being blocked, so that the sludge separated in the clarifier can be timely and effectively removed, and further the sludge wastewater flushed from the sludge pump and the cyclone pump can be further conveyed into the clarifier to be precipitated and separated through the filter-press water pit; by arranging the mud level meter in the wastewater cyclone tank and connecting the process water supplementing equipment, the sludge concentration in the wastewater cyclone tank can be accurately measured, and the sludge concentration can be regulated through water supplementing, so that the sludge treatment efficiency is effectively improved; through be provided with the level gauge in the play water tank, can accurately measure the liquid level when the thick liquid waste water needs to discharge, the liquid level when stopping discharging and need discharge to the liquid level in the throwing thick liquid pond, and through process water moisturizing equipment, then can be in time carry out moisturizing when the thick liquid waste water in the play water tank can not satisfy the cooling needs of coal pulverizer.
Example 6
In contrast to the embodiment 5, a pH adjusting tank is provided between the second output end of the clarifier 1 and the water outlet tank 6.
According to detection, in the practical application process, the device for reducing the chloride ion concentration in the desulfurization slurry is used for carrying out precipitation separation on the desulfurization slurry through the clarification tank, and then the slurry waste water is digested through the slag bin and the coal mill, so that the discharge amount of the desulfurization slurry can be effectively increased, and water originally used for dust suppression and cooling can be further saved, thereby effectively preventing the problems of corrosion prevention damage and corrosion of desulfurization system equipment, reduction of desulfurization efficiency, increase of gypsum scaling tendency, influence on the quality of gypsum and increase of plant power consumption caused by too high chloride ion concentration in the desulfurization slurry; meanwhile, the other output end of the sludge pump is connected with the clarification tank, and the sludge at the bottom of the clarification tank can be prevented from being precipitated and blocked in a reflux way by the sludge pump; by arranging the process water flushing equipment, the sludge pump and the cyclone pump can be effectively prevented from being blocked, so that the sludge separated in the clarifier can be timely and effectively removed, and further the sludge wastewater flushed from the sludge pump and the cyclone pump can be further conveyed into the clarifier to be precipitated and separated through the filter-press water pit; by arranging the mud level meter in the wastewater cyclone tank and connecting the process water supplementing equipment, the sludge concentration in the wastewater cyclone tank can be accurately measured, and the sludge concentration can be regulated through water supplementing, so that the sludge treatment efficiency is effectively improved; the liquid level meter is arranged in the water outlet tank, so that the liquid level of the slurry waste water when the slurry waste water needs to be discharged, the liquid level of the slurry waste water when the discharge is stopped and the liquid level of the slurry waste water needs to be discharged into the slurry throwing tank can be accurately measured, and the water supplementing device can timely supplement water when the slurry waste water in the water outlet tank cannot meet the cooling requirement of the coal mill; through be provided with the pH equalizing basin between the second output of clarifier with go out the water tank, can further guarantee follow the pH value of the thick liquid waste water that the clarifier subsides the separation is in suitable range to avoid causing the damage to follow-up equipment.
According to the device for reducing the concentration of chloride ions in the desulfurization slurry, the precipitation separation is carried out on the desulfurization slurry through the clarification tank, and the slurry wastewater is digested through the slag bin and the coal mill, so that the discharge amount of the desulfurization slurry can be effectively increased, water originally used for dust suppression and cooling can be further saved, and the problems of corrosion prevention damage and corrosion of desulfurization system equipment, reduction of desulfurization efficiency and increase of gypsum scaling tendency, influence on the quality of gypsum and increase of plant power consumption are effectively prevented.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a plurality of simple variants can be made to the technical proposal of the utility model, and in order to avoid unnecessary repetition, the utility model does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (10)
1. The device for reducing the concentration of chloride ions in the desulfurization slurry is characterized by comprising a clarification tank (1), a wastewater cyclone tank (3) and a water outlet tank (6);
a mud level meter is arranged in the clarification tank (1), the clarification tank (1) is connected with the output end of the gypsum cyclone, the first output end of the clarification tank (1) is connected with the input end of the sludge pump (2), one output end of the sludge pump (2) is connected with the wastewater cyclone tank (3), and the wastewater cyclone tank (3) is connected with the dewatering belt conveyor (5) through the cyclone pump (4);
the second output end of the clarification tank (1) is connected with the water outlet tank (6), and the water outlet tank (6) is respectively connected with the pulp throwing tank (8), the slag bin (9) and the coal mill (10) through a water outlet pump (7).
2. The device for reducing the concentration of chloride ions in a desulphurized slurry according to claim 1, characterized in that an output of the water outlet pump (7) is connected to a spray pipe of the slag bin (9) and an output is connected to a spray pipe of a feeder of the coal mill (10).
3. The apparatus for reducing the concentration of chloride ions in a desulphurized slurry according to claim 1 or 2, characterized in that the other output of the sludge pump (2) is connected to the clarifier (1).
4. The device for reducing the concentration of chloride ions in the desulfurization slurry according to claim 1, characterized in that a process water flushing device is arranged between the first output end of the clarification tank (1) and the sludge pump (2), and a process water flushing device is arranged between the wastewater cyclone tank (3) and the cyclone pump (4).
5. The apparatus for reducing chloride ion concentration in desulfurization slurry according to claim 4, further comprising a press-filter water pit (12), wherein an input end of the press-filter water pit (12) is connected to a waste water end of the process water flushing device, and an output end is connected to the clarifier (1) through a press-filter water pit pump (11).
6. The device for reducing the concentration of chloride ions in desulfurization slurry according to claim 1, wherein the wastewater cyclone tank (3) and the water outlet tank (6) are connected with process water supplementing equipment.
7. The apparatus for reducing the concentration of chloride ions in a desulfurization slurry according to claim 6, characterized in that a mud level meter is provided in the wastewater cyclone tank (3).
8. The apparatus for reducing the concentration of chloride ions in a desulfurization slurry according to claim 6, characterized in that a level gauge is provided in said water outlet tank (6).
9. The apparatus for reducing the concentration of chloride ions in a desulfurization slurry according to claim 1, characterized in that the first output end of the clarifier (1) is provided at the bottom and the second output end is provided on the side wall near the top.
10. The device for reducing the concentration of chloride ions in a desulfurization slurry according to claim 1, characterized in that a pH adjusting tank is provided between the second output end of the clarifier (1) and the water outlet tank (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320222919.XU CN219662962U (en) | 2023-02-06 | 2023-02-06 | Device for reducing concentration of chloride ions in desulfurization slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320222919.XU CN219662962U (en) | 2023-02-06 | 2023-02-06 | Device for reducing concentration of chloride ions in desulfurization slurry |
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