CN212396275U - Full-load dust remover efficiency improving and wastewater evaporating system - Google Patents
Full-load dust remover efficiency improving and wastewater evaporating system Download PDFInfo
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- CN212396275U CN212396275U CN202021453728.7U CN202021453728U CN212396275U CN 212396275 U CN212396275 U CN 212396275U CN 202021453728 U CN202021453728 U CN 202021453728U CN 212396275 U CN212396275 U CN 212396275U
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Abstract
The utility model discloses a full load dust remover is carried and is imitated and waste water evaporation system, desulfurization waste water pipeline is linked together through the heat absorption side entry of water governing system and waste water preheating system, air compressor's export is linked together with the entry of nozzle in the atomizing evaporation system after managing through pipeline and the heat absorption side export of waste water preheating system behind the air governing system, the export of boiler divide into three routes behind the SCR denitrification facility, wherein, first all the way is linked together through air heater and atomizing evaporation system's flue gas entry, the second way is linked together through waste water preheating system's the side of releasing heat and atomizing evaporation system's flue gas entry, third route is linked together with atomizing evaporation system's flue gas entry, atomizing evaporation system's export is linked together with the entry of dust remover, this system can effectually improve the efficiency and the desorption rate of dust remover, reduce the handling capacity of power plant's desulfurization waste water.
Description
Technical Field
The utility model belongs to the technical field of the waste water evaporation, a full load dust remover is carried and is imitated and waste water vaporization system is related to.
Background
Along with the ultra-low emission modification of a thermal power plant, the ultra-low emission modification of flue gas and dust is basically carried out, and the currently adopted modification method comprises a low-temperature electric dust remover and desulfurization collaborative dust removal, the efficiency improvement modification of the electric dust remover, the desulfurization dust removal and a wet electric dust remover, the electric bag (cloth bag) dust remover and the desulfurization collaborative dust removal, the electric bag (cloth bag) dust remover, the desulfurization dust removal and the wet electric dust remover and other various technical routes.
Due to the multiple variability of fuel and working conditions of the coal-fired unit and the operation loss of the dust remover, the dust removal system has great difficulty in long-term stable standard discharge, so that the efficiency of the pre-stage dust remover needs to be improved to reduce the dust removal pressure of subsequent desulfurization collaborative dust removal or wet electric dust remover, most of the pre-stage dust removers are improved in efficiency, the dust removal capacity of the pre-stage dust removers is basically exerted to the maximum, and if the pre-stage dust removers are improved again, the large investment cost is needed. An efficiency improving technology with low investment cost and small occupied space is urgently needed to meet the requirement of environmental protection.
The waste water zero discharge requirement is generally achieved by adopting the modes of bypass evaporation, multi-stage flash evaporation, multi-effect flash evaporation and the like, no matter what technical route is adopted, the total amount of the waste water directly influences the investment and the operation cost of a waste water zero discharge system, and how to reduce the total amount of the waste water is important.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a full load dust remover and carry effect and waste water vaporization system, this system can effectual efficiency and the desorption rate that improves the dust remover, reduce the handling capacity of power plant's desulfurization waste water.
In order to achieve the purpose, the full-load dust remover efficiency-improving and wastewater-evaporating system of the utility model comprises a desulfurization wastewater pipeline, a water regulating system, a wastewater preheating system, an air compressor, an air regulating system, an atomization and evaporation system, a boiler, an SCR denitration device, an air preheater and a dust remover;
the desulfurization waste water pipeline is communicated with a heat absorption side inlet of the waste water preheating system through a water adjusting system, an outlet of an air compressor is communicated with a heat absorption side outlet of the waste water preheating system through a pipeline and a pipe after passing through the air adjusting system, and is communicated with an inlet of a nozzle in the atomization evaporation system, an outlet of a boiler is divided into three paths after passing through an SCR (selective catalytic reduction) denitration device, wherein the first path is communicated with a flue gas inlet of the atomization evaporation system through an air preheater, the second path is communicated with a flue gas inlet of the atomization evaporation system through a heat release side of the waste water preheating system, the third path is communicated with a flue gas inlet of the atomization evaporation system, and an outlet of the atomization evaporation system.
The water conditioning system comprises a first valve group, wherein the desulfurization waste water pipeline is communicated with a heat absorption side inlet of the waste water preheating system through the first valve group.
The air conditioning system includes a second valve set, wherein the outlet of the air compressor communicates with the inlet of the atomizing evaporation system through the second valve set.
The flue gas temperature raising system comprises a third valve group, the outlet of the SCR denitration device is divided into two paths, one path of the outlet is communicated with the inlet of the air preheater, the other path of the outlet is divided into two paths after being fed into the third valve group, the other path of the outlet is communicated with the heat release side inlet of the waste water preheating system through the regulating valve, and the other path of the outlet is communicated with the flue gas inlet of the atomization evaporation system through a pipeline and a pipe.
The device also comprises a cleaning system and a cleaning regulating valve group, wherein the outlet of the cleaning system is communicated with the heat absorption side inlet of the waste water preheating system through a water regulating system, one end of the cleaning regulating valve group is communicated with the outlet of an air compressor through an air regulating system, and the other end of the cleaning regulating valve group is communicated with the inlet of a nozzle in the atomization evaporation system.
The utility model discloses following beneficial effect has:
the utility model discloses a full load dust remover carries effect and waste water evaporation system when concrete operation, desulfurization waste water is sprayed into atomizing evaporation system through the nozzle after preheating through waste water preheating system and converging with the compressed air of air compressor output, in atomizing evaporation system, the liquid drop collides with the fine dust in the flue gas and adheres to the fine dust surface, change the activity on fine dust surface, make fine dust reunion phenomenon take place, increase the dust particle diameter, on the other hand the spraying of waste water has increased the flue gas moisture content, the inorganic salt matter that simultaneously evaporation was appeared adsorbs on the fine particle surface, form the electrically conductive passageway, make the dust particle diameter that gets into the dust remover increase, specific resistance descends, in order to promote electrostatic precipitator efficiency, reduce the pressure of follow-up dust collecting equipment, ensure that the dust discharges and stably reaches the minimum requirement for a long time, in addition, when the smoke temperature of dust remover entry can's unable reach the designing requirement, then directly draw forth high temperature flue gas of the same kind from SCR denitrification facility exit and send into atomizing evaporation system as the supplementary flue gas in to promote the smoke temperature of dust remover entry, improve the efficiency and the desorption rate of dust remover then, what need explain simultaneously, the utility model discloses utilize desulfurization waste water as the water source, with the handling capacity that reduces power plant's desulfurization waste water, simple structure, convenient operation, the practicality is extremely strong.
Drawings
Fig. 1 is a schematic structural view of the present invention;
wherein, 1 is the waste water preheating system, 2 is the atomizing evaporation system, 3 is air compressor, 41 is water governing system, 42 is air governing system, 5 is the flue gas temperature lift system, 6 is the cleaning system, 7 is the washing regulating valve group, 8 is the SCR denitrification facility, 9 is air heater, 10 is the dust remover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the full-load dust remover efficiency-improving and wastewater-evaporating system of the present invention comprises a desulfurization wastewater pipeline, a water-conditioning system 41, a wastewater preheating system 1, an air compressor 3, an air-conditioning system 42, an atomization and evaporation system 2, a boiler, an SCR denitration device 8, an air preheater 9 and a dust remover 10; the desulfurization waste water pipeline is communicated with a heat absorption side inlet of the waste water preheating system 1 through a water adjusting system 41, an outlet of an air compressor 3 is communicated with a heat absorption side outlet of the waste water preheating system 1 through a pipeline after passing through an air adjusting system 42 and an inlet of a nozzle in the atomization evaporation system 2, an outlet of a boiler is divided into three paths after passing through an SCR denitration device 8, wherein the first path is communicated with a flue gas inlet of the atomization evaporation system 2 through an air preheater 9, the second path is communicated with a flue gas inlet of the atomization evaporation system 2 through a heat release side of the waste water preheating system 1, the third path is communicated with a flue gas inlet of the atomization evaporation system 2, and an outlet of the atomization evaporation system 2 is communicated with an inlet of a dust remover 10.
The water conditioning system 41 comprises a first valve group, wherein a desulfurization wastewater pipeline is communicated with a heat absorption side inlet of the wastewater preheating system 1 through the first valve group; the air regulation system 42 comprises a second set of valves, wherein the outlet of the air compressor 3 communicates with the inlet of the atomizing evaporation system 2 via the second set of valves.
The utility model discloses still include smoke temperature lift system 5, wherein, smoke temperature lift system 5 includes third valve group, and SCR denitrification facility 8's export is divided into two tunnel, wherein is linked together with air heater 9's entry all the way, and another way is divided into two tunnel after feeding third valve group, wherein is linked together through the governing valve with the exothermic side entry of preheating of waste water system 1 all the way, and another way is linked together with the flue gas entry of atomization vaporization system 2 after the export of the exothermic side of preheating of waste water system 1 and air heater 9 are passed through the pipeline and are managed.
The utility model discloses still include cleaning system 6 and wash regulating valve group 7, wherein, cleaning system 6's export is linked together through the heat absorption side entry of water governing system 41 and waste water preheating system 1, and the one end of wasing regulating valve group 7 is linked together through air governing system 42 and air compressor 3's export, and the other end of wasing regulating valve group 7 is linked together with the entry of atomizing vaporization system 2 inner nozzle.
The utility model discloses a concrete working process does:
the desulfurization wastewater is preheated to 40-55 ℃ through the wastewater preheating system 1, the preheated wastewater and compressed air output by the air compressor 3 converge and then liquid drops are atomized to 30-50 microns through a nozzle, and then the droplets are evaporated in the atomization evaporation system 2, wherein in the normal condition, all the introduced flue gas is provided by the flue gas output by the air preheater 9 in the evaporation process, and when the flue gas temperature at the inlet of the dust remover 10 cannot meet the design requirement, one path of high-temperature flue gas is directly led out from the outlet of the SCR denitration device 8 and is used as supplementary flue gas to be sent into the atomization evaporation system 2, so that the flue gas temperature at the inlet of the dust remover 10 is improved.
Waste water evaporation and dust remover carry and imitate system and compare with prior art and have following advantage:
1) the efficiency of the dust remover 10 is improved, on one hand, liquid drops enter a flue and collide with fine dust to be adhered to the surface of the fine dust, so that the activity of the surface of the fine dust is changed, the fine dust is agglomerated, and the particle size of the dust is increased; on the other hand, the spraying of waste water has increased the flue gas moisture content, and the inorganic salt matter that evaporates simultaneously and separate out adsorbs on the fine particle surface, forms electrically conductive passageway, and above-mentioned three kinds of factors make the dust particle size who gets into dust remover 10 increase, specific resistance descend to promote electrostatic precipitator 10 efficiency, reduce follow-up dust collecting equipment's pressure, ensure that the dust discharges and stably reaches the minimum requirement for a long time.
2) The waste water evaporation rate is fast, and waste water preheating system 1 has improved the initial temperature that gets into the flue liquid drop, has reduced the liquid drop evaporation time, avoids the liquid drop adherence, deposition, the corruption condition that produces because of the evaporation is incomplete greatly, and simultaneously, the shortening of evaporation distance makes evaporation system's in this system arrange more nimble.
3) The amount of desulfurization waste water and the amount of water supplement are reduced, the modified water sprayed into the flue is taken from the desulfurization waste water, the part of waste water enters the dust remover 10 and the desulfurization system along with the flue gas after being evaporated, and the crystal enters the ash conveying system along with the dust captured by the dust remover 10.
4) The system operation is not influenced by unit load, and the flue gas temperature can be effectively increased to meet the design requirement when the low-load flue gas temperature of the unit is lower through the flue gas temperature increasing system 5, so that the system can stably operate under various load working conditions.
5) The service life of the nozzle is prolonged, the cleaning system 6 cleans the inside and the outside of the nozzle at regular time through cleaning water and compressed air, the scaling phenomenon caused by long-term operation of the nozzle can be effectively avoided, and the service life of the sprayer is prolonged.
Claims (5)
1. A full-load dust remover efficiency improvement and wastewater evaporation system is characterized by comprising a desulfurization wastewater pipeline, a water regulation system (41), a wastewater preheating system (1), an air compressor (3), an air regulation system (42), an atomization evaporation system (2), a boiler, an SCR denitration device (8), an air preheater (9) and a dust remover (10);
the desulfurization waste water pipeline is communicated with a heat absorption side inlet of the waste water preheating system (1) through a water adjusting system (41), an outlet of an air compressor (3) is communicated with a heat absorption side outlet of the waste water preheating system (1) through a pipeline after passing through an air adjusting system (42) and then is communicated with an inlet of a nozzle in the atomization evaporation system (2), an outlet of a boiler is divided into three paths after passing through an SCR denitration device (8), wherein the first path is communicated with a flue gas inlet of the atomization evaporation system (2) through an air preheater (9), the second path is communicated with a flue gas inlet of the atomization evaporation system (2) through a heat release side of the waste water preheating system (1), the third path is communicated with a flue gas inlet of the atomization evaporation system (2), and an outlet of the atomization evaporation system (2) is communicated with an inlet of a dust remover (10).
2. The full load precipitator efficiency enhancement and wastewater evaporation system of claim 1, wherein the water conditioning system (41) comprises a first valve set, wherein the desulfurization wastewater conduit communicates with the heat absorption side inlet of the wastewater preheating system (1) through the first valve set.
3. The full-load precipitator efficiency and wastewater evaporation system of claim 1, wherein the air conditioning system (42) comprises a second set of valves, wherein the outlet of the air compressor (3) communicates with the inlet of the atomization evaporation system (2) via the second set of valves.
4. The full-load dust collector efficiency improving and wastewater evaporating system according to claim 1, further comprising a smoke temperature raising system (5), wherein the smoke temperature raising system (5) comprises a third valve set, an outlet of the SCR denitration device (8) is divided into two paths, one path is communicated with an inlet of the air preheater (9), the other path is divided into two paths after being fed into the third valve set, one path is communicated with a heat release side inlet of the wastewater preheating system (1) through a regulating valve, and the other path is communicated with a heat release side outlet of the wastewater preheating system (1) and an outlet of the air preheater (9) through pipelines and pipes and then communicated with a smoke inlet of the atomization and evaporation system (2).
5. The full-load deduster efficiency-improving and wastewater evaporation system according to claim 1, further comprising a cleaning system (6) and a cleaning regulating valve bank (7), wherein an outlet of the cleaning system (6) is communicated with a heat absorption side inlet of the wastewater preheating system (1) through a water regulating system (41), one end of the cleaning regulating valve bank (7) is communicated with an outlet of the air compressor (3) through an air regulating system (42), and the other end of the cleaning regulating valve bank (7) is communicated with an inlet of a nozzle in the atomization evaporation system (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021453728.7U CN212396275U (en) | 2020-07-21 | 2020-07-21 | Full-load dust remover efficiency improving and wastewater evaporating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021453728.7U CN212396275U (en) | 2020-07-21 | 2020-07-21 | Full-load dust remover efficiency improving and wastewater evaporating system |
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| CN212396275U true CN212396275U (en) | 2021-01-26 |
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