CN114262010A - Combined type desulfurization waste water zero release processing system - Google Patents
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- CN114262010A CN114262010A CN202111575384.6A CN202111575384A CN114262010A CN 114262010 A CN114262010 A CN 114262010A CN 202111575384 A CN202111575384 A CN 202111575384A CN 114262010 A CN114262010 A CN 114262010A
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 84
- 230000023556 desulfurization Effects 0.000 title claims abstract description 84
- 239000002351 wastewater Substances 0.000 title claims abstract description 70
- 238000012545 processing Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000007921 spray Substances 0.000 claims abstract description 39
- 239000003546 flue gas Substances 0.000 claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 27
- 208000028659 discharge Diseases 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 18
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 11
- 230000018044 dehydration Effects 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 2
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims 1
- 229940083037 simethicone Drugs 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 22
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 238000004065 wastewater treatment Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000005514 two-phase flow Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Treating Waste Gases (AREA)
Abstract
The invention discloses a combined type desulfurization waste water zero-discharge treatment system, which comprises a heat collector, a heater, a first valve, a second valve, an oil pump, a spray dryer, an air pump, a first water pump, a second water pump, a nozzle, an induced draft fan, a desulfurization waste water storage tank, a dehydration system, a flue gas desulfurization system, an air preheater, a flue, a chimney and a dust remover, wherein the heat collector fully utilizes solar energy, reduces the energy consumption of the system, saves energy, reduces cost and does not pollute the environment, the desulfurization waste water is sent into the nozzle through the water pump, meanwhile, compressed air is sent into the air through the air pump and is mixed with the desulfurization waste water, the mixture is atomized into liquid drops through the nozzle and then is sprayed into the spray dryer, the atomized liquid drops exchange heat with superheated steam to be changed into water vapor, and the problems that the wall surface of the flue or the dust remover is stained, scaled and corroded and the flue gas is prevented from being completely evaporated liquid drops, The occurrence of the clogging phenomenon. Solves the technical problems of high cost, high energy consumption and flue corrosion of the existing desulfurization wastewater treatment method.
Description
Technical Field
The invention relates to the technical field of desulfurization wastewater treatment, in particular to a combined type desulfurization wastewater zero-discharge treatment system.
Background
Among them is sulfur dioxide, which is one of the gaseous pollutants that releases fine particles and has a serious influence on the environment during the combustion of fossil fuels such as coal. Excessive emissions of sulfur dioxide can cause acid rain, and thus, sulfur dioxide emissions are of great concern.
At present, the desulfurization waste water is handled through traditional chemical precipitation method to the thermal power factory, but the treatment cost is higher, and the waste water after the processing can not realize cyclic utilization's problem. The other treatment method comprises an evaporative crystallization technology and a flue evaporation technology, the evaporative crystallization technology is high in construction cost, higher energy consumption can be generated in the operation process, the requirement on wastewater treatment is high, sewage with high hardness and high scaling tendency is not easy to treat, meanwhile, the harsh water inlet requirement is provided for the sewage containing volatile substances and corrosive substances, and the flue evaporation technology has the problems of incomplete evaporation, flue corrosion and the like. Therefore, the research and development of the desulfurization wastewater zero-discharge technology provides a new way for desulfurization wastewater, reduces the cost and the energy consumption, reduces the corrosion of a flue, and has important practical significance.
Disclosure of Invention
The invention provides a combined type desulfurization wastewater zero-discharge treatment system, which is used for solving the technical problems of high cost, high energy consumption and flue corrosion of the conventional desulfurization wastewater treatment method.
In view of the above, the invention provides a combined type desulfurization wastewater zero-emission treatment system, which comprises a heat collector, a heater, a first valve, a second valve, an oil pump, a spray dryer, an air pump, a first water pump, a second water pump, a nozzle, an induced draft fan, a desulfurization wastewater water storage tank, a dehydration system, a flue gas desulfurization system, an air preheater, a flue, a chimney and a dust remover, wherein the heat collector is arranged in the flue gas desulfurization system;
the heat conduction oil is arranged in the heat collector, the output end of the heat collector is connected with the first input end of the heater, the first output end of the heater is connected with the oil pump, and the oil pump is connected with the heat collector;
the second output end of the heater is connected with the first input end of the spray dryer through a second valve, the first output end of the spray dryer is connected with the input end of a second water pump through a first valve, and the output end of the second water pump is connected with the second input end of the heater;
the second output end of the spray dryer is connected with the flue through an induced draft fan;
the input end of the air preheater is connected with a flue gas outlet of the boiler, the output end of the air preheater is connected with the dust remover through a flue, the outlet of the dust remover is connected with the flue gas desulfurization system, the first output end of the flue gas desulfurization system is connected with the chimney, and the second output end of the flue gas desulfurization system is connected with the input end of the dehydration system;
the output end of the dewatering system is connected with the input end of the desulfurization wastewater storage tank, the output end of the desulfurization wastewater storage tank is connected with the input end of the first water pump, the output end of the first water pump and the output end of the air pump are connected with the nozzle together, and the nozzle extends into the top inside the spray dryer from the second input end of the spray dryer.
Optionally, the system further comprises a hot oil tank and a cold oil tank;
the input end of the hot oil tank is connected with the output end of the heat collector, and the output end of the hot oil tank is connected with the first input end of the heater;
the input of cold oil tank is connected the first output of heater, and the input of oil pump is connected to the output of cold oil tank.
Optionally, the system further comprises a turbine intermediate pressure cylinder, a third valve and a fourth valve;
the input end of the steam turbine intermediate pressure cylinder is connected with a steam extraction port of the boiler, the output end of the steam turbine intermediate pressure cylinder is connected with a third valve, and the third valve is connected with the first input end of the spray dryer;
one end of the fourth valve is connected with the first output end of the spray dryer, and the other end of the fourth valve is connected with the heat regenerator.
Optionally, a heliostat is also included;
the heliostat is used for reflecting the solar rays to the heat collector.
Optionally, the heating temperature of the heater is 200-300 ℃.
Optionally, the heat transfer oil is dimethicone.
According to the technical scheme, the combined type desulfurization wastewater zero-discharge treatment system provided by the invention has the following advantages:
according to the combined type desulfurization wastewater zero-discharge treatment system provided by the invention, the first valve and the second valve are opened, the heat collector collects solar energy to heat the heat conduction oil, the heat conduction oil enters the heater to heat condensed water after being heated to generate superheated steam, the heat conduction oil after heat exchange and temperature reduction is pumped into the heat collector through the oil pump to absorb heat and raise temperature again, and the whole heat absorption-heat release cycle is completed. The heat collector makes full use of solar energy, thereby reducing the overall energy consumption of the system, saving energy, reducing cost and not polluting environment. Flue gas in a flue is treated by a flue gas desulfurization system and then enters a chimney to be discharged, gypsum is separated from the obtained desulfurization wastewater after the treatment of a dehydration system, the treated desulfurization wastewater enters a desulfurization wastewater storage tank, the desulfurization wastewater is sent into a nozzle by a first water pump, meanwhile, compressed air is sent into an air pump to be mixed with the desulfurization wastewater, the desulfurization wastewater is atomized into liquid drops by a gas-liquid two-phase flow nozzle and then is sprayed into a spray dryer, the atomized liquid drops exchange heat with superheated steam, the desulfurization wastewater enters the spray dryer in a liquid state, and all liquid water is changed into steam after reaching the lower half part of the spray dryer, so that the phenomena of sticking, scaling, corrosion, blockage and the like of the wall surface of the flue or a dust remover due to the existence of the liquid drops which are not completely evaporated in the flue gas are basically avoided. The desulfurized wastewater steam is sent into the flue through the induced draft fan, and pollutants in the wastewater are converted into crystals or salts which are captured by the dust remover along with the fly ash. Solves the technical problems of high cost, high energy consumption and flue corrosion of the existing desulfurization wastewater treatment method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a combined type desulfurization wastewater zero-discharge treatment system provided by the invention;
FIG. 2 is another schematic structural diagram of a combined desulfurization wastewater zero-discharge treatment system provided by the invention;
wherein the reference numerals are:
1-a heliostat; 2-a heat collector; 3-a hot oil tank; 4-a heater; 5-a cold oil tank; 6-an oil pump; 7-a second water pump; 8-a first valve; 9-a second valve; 10-a third valve; 11-a turbine intermediate pressure cylinder; 12-an air pump; 13-a first water pump; 14-a nozzle; 15-spray dryer; 16-a draught fan; 17-a desulfurized wastewater storage tank; 18-dehydration system, 19-flue gas desulfurization system; 20-a chimney; 21-a dust remover; 22-a flue; 23-an air preheater; 24-fourth valve.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For easy understanding, please refer to fig. 1, the embodiment of the combined desulfurization wastewater zero-discharge treatment system provided in the present invention includes a heat collector 2, a heater 4, a first valve 8, a second valve 9, an oil pump 6, a spray dryer 15, an air pump 12, a first water pump 13, a second water pump 7, a nozzle 14, an induced draft fan 16, a desulfurization wastewater water storage tank 17, a dehydration system 18, a flue gas desulfurization system 19, an air preheater 23, a flue 22, a chimney 20, and a dust remover 21;
the heat collector 2 is internally provided with heat conduction oil, the output end of the heat collector 2 is connected with the first input end of the heater 4, the first output end of the heater 4 is connected with the oil pump 6, and the oil pump 6 is connected with the heat collector 5;
a second output end of the heater 4 is connected with a first input end of a spray dryer 15 through a second valve 9, a first output end of the spray dryer 15 is connected with an input end of a second water pump 7 through a first valve 8, and an output end of the second water pump 7 is connected with a second input end of the heater 4;
a second output end of the spray dryer 15 is connected with the flue through an induced draft fan 16;
the input end of the air preheater 23 is connected with a boiler flue gas outlet, the output end is connected with the dust remover 21 through the flue 22, the outlet of the dust remover 21 is connected with the flue gas desulfurization system 19, the first output end of the flue gas desulfurization system 19 is connected with the chimney 20, and the second output end is connected with the input end of the dehydration system 18;
the output end of the dewatering system 18 is connected with the input end of the desulfurization wastewater storage tank 17, the output end of the desulfurization wastewater storage tank 17 is connected with the input end of the first water pump 13, the output end of the first water pump 13 and the output end of the air pump 12 are connected with the nozzle 14, and the nozzle 14 extends into the top inside the spray dryer 15 from the second input end of the spray dryer 15.
The working principle of the combined type desulfurization wastewater zero-discharge treatment system provided by the embodiment of the invention is as follows: the first valve 8 and the second valve 9 are opened, the heat collector 2 collects heat-conducting oil inside the solar heating, dimethyl silicone oil can be selected as heat conducting oil, the heat conducting oil has a good heat conducting effect, the heat conducting oil is heated and then enters a heater 4 to heat condensed water, the heater 4 generates superheated steam in the process of heating the condensed water, the temperature of the heater 4 can be set to be 200-300 ℃ in the heating process, the heat conducting oil which is cooled after heat exchange is pumped back into a heat collector 2 through an oil pump 6 to absorb heat again and raise the temperature, the whole heat absorption-heat release cycle is completed, the superheated steam generated by the heater 4 enters a spray dryer 15 through a second valve 9, the steam is condensed and released in the spray dryer 15 to provide heat required by the evaporation of desulfurization wastewater, then the water passes through a first valve 8 and is pumped into the heater 4 by a first water pump 7 to absorb heat and raise the temperature again, the whole thermal cycle is completed, and the first water pump 7 is selected as a condensate pump. The flue gas in the flue 22 is treated by a flue gas desulfurization system 19 and then enters a chimney for discharge, the desulfurization wastewater obtained after the treatment of the flue gas desulfurization system 19 is treated by a dehydration system 18 to separate gypsum, then the desulfurization wastewater enters a desulfurization wastewater water storage tank 17, the desulfurization wastewater in the desulfurization wastewater water storage tank 17 is sent to a nozzle 14 by a first water pump 13, meanwhile, compressed air is sent by an air pump 12 to be mixed with the separated wastewater sent by the first water pump 13, the mixture is atomized into liquid drops by a gas-liquid two-phase flow nozzle 14 and then sprayed into a spray dryer 15, the atomized liquid drops exchange heat with superheated steam, the desulfurization wastewater enters the spray dryer 15 in a liquid state, and after reaching the lower half part of the spray dryer 15, all liquid water is shifted to steam, so that the phenomenon that the wall surface of the flue 22 or the dust remover 21 is stained due to the presence of the unevaporated liquid drops in the flue gas is basically avoided, Scaling, corrosion, clogging and the like. The desulfurized waste water vapor is sent into the flue 22 by the induced draft fan 16, wherein the pollutants in the waste water are converted into crystals or salts, and are captured by the dust collector 21 together with the fly ash.
According to the combined type desulfurization wastewater zero-discharge treatment system provided by the invention, the first valve 8 and the second valve 9 are opened, the heat collector 2 collects solar heating heat conduction oil, the heat conduction oil enters the heater 4 to heat condensed water to generate superheated steam after being heated, the heat conduction oil after heat exchange and temperature reduction is pumped into the heat collector 2 through the oil pump 6 to absorb heat and raise temperature again, and the whole heat absorption-heat release cycle is completed. The heat collector 2 makes full use of solar energy, thereby reducing the overall energy consumption of the system, saving energy, reducing cost and not polluting environment. The flue gas in the flue 22 is treated by a flue gas desulfurization system 19 and then enters a chimney for discharge, the obtained desulfurization wastewater is treated by a dehydration system 18 to separate gypsum, the treated desulfurization wastewater enters a desulfurization wastewater water storage tank 17, the desulfurization wastewater is sent to a nozzle 14 by a first water pump 13, meanwhile, compressed air is sent by an air pump 12 to be mixed with the desulfurization wastewater, the desulfurization wastewater is atomized into liquid drops by a gas-liquid two-phase flow nozzle 14 and then is sprayed into a spray dryer 15, the atomized liquid drops exchange heat with superheated steam, the desulfurization wastewater enters the spray dryer 15 in a liquid state, and after reaching the lower half part of the spray dryer 15, all the liquid water is changed into steam, so that the phenomena of fouling, scaling, corrosion, blockage and the like of the wall surface of the flue 22 or a dust remover 21 caused by the existence of the liquid drops which are not completely evaporated in the flue gas are basically avoided. The desulfurized waste water vapor is sent into the flue 22 by the induced draft fan 16, wherein the pollutants in the waste water are converted into crystals or salts, and are captured by the dust collector 21 together with the fly ash. Solves the technical problems of high cost, high energy consumption and flue corrosion of the existing desulfurization wastewater treatment method.
Referring to fig. 2, in an embodiment, the combined desulfurization wastewater zero-emission treatment system provided by the invention further includes a heliostat 1, wherein the heliostat 1 is used for reflecting the solar rays to the heat collector 2. The number of the heliostats 1 can be selected according to actual application scenes, and the heliostats 1 reflect sunlight to converge on the heat collector 2, so that the heat collection effect of the heat collector 2 is enhanced.
Referring to fig. 2, in an embodiment, the combined desulfurization wastewater zero-discharge treatment system provided by the present invention further includes a hot oil tank 3 and a cold oil tank 5, an input end of the hot oil tank 3 is connected to an output end of the heat collector 2, an output end of the hot oil tank 3 is connected to a first input end of the heater 4, an input end of the cold oil tank 5 is connected to a first output end of the heater 4, and an output end of the cold oil tank 5 is connected to an input end of the oil pump 6. The heat collector 2 collects solar energy to heat conduction oil, the conduction oil is heated and then firstly enters the hot oil tank 3, then flows into the heater 4 to heat condensed water to generate superheated steam according to needs, the conduction oil after heat exchange and temperature reduction enters the cold oil tank 5, and then is pumped into the heat collector 2 through the oil pump 6 to absorb heat and raise temperature again, and the whole heat absorption-heat release cycle is completed. A certain amount of heat conducting oil is stored by adopting the hot oil tank 3 and the cold oil tank 5, the unstable influence of solar radiation is eliminated in a mode of 'heat storage' instead of 'coal storage', and the system can be ensured to continuously and stably operate.
Referring to fig. 2, in an embodiment, the combined desulfurization wastewater zero-emission treatment system further includes a steam turbine intermediate pressure cylinder 11, a third valve 10 and a fourth valve 24, an input end of the steam turbine intermediate pressure cylinder 11 is connected to a steam extraction port of a boiler, an output end of the steam turbine intermediate pressure cylinder 11 is connected to the third valve 10, the third valve 10 is connected to a first input end of a spray dryer 15, and one end of the fourth valve 24 is connected to a first output end of the spray dryer 15, and the other end is connected to a heat regenerator. At night and in rainy days, the heat collector 2 cannot work due to the fact that solar energy cannot be collected, therefore, in order to guarantee normal operation of the system, the steam turbine intermediate pressure cylinder 11, the third valve 10 and the fourth valve 24 are further arranged, when the heat collector 2 cannot work, the third valve 10 and the fourth valve 24 are opened, the first valve 8 and the second valve 9 are closed, a steam is extracted from a certain steam extraction port of the steam turbine intermediate pressure cylinder 11 to serve as a heat source, the steam enters the spray dryer 15 through the third valve 10, the steam enters the heat regenerator through the fourth valve 24 after exchanging heat with desulfurization wastewater liquid drops, the heat exchange evaporation process of the desulfurization wastewater is the same as that of the above, and the description is omitted. Therefore, the combined desulfurization wastewater zero-emission treatment system with the turbine intermediate pressure cylinder 11, the third valve 10 and the fourth valve 24 can realize stable operation under the condition of sufficient solar energy and under the condition of insufficient solar energy, namely, when the solar energy is sufficient, the first valve 8 and the second valve 9 are opened, the third valve 10 and the fourth valve 24 are closed, and when the solar energy is insufficient, the third valve 10 and the fourth valve 24 are opened, and the first valve 8 and the second valve 9 are closed.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A combined type desulfurization waste water zero-emission treatment system is characterized by comprising a heat collector, a heater, a first valve, a second valve, an oil pump, a spray dryer, an air pump, a first water pump, a second water pump, a nozzle, an induced draft fan, a desulfurization waste water storage tank, a dehydration system, a flue gas desulfurization system, an air preheater, a flue, a chimney and a dust remover;
the heat conduction oil is arranged in the heat collector, the output end of the heat collector is connected with the first input end of the heater, the first output end of the heater is connected with the oil pump, and the oil pump is connected with the heat collector;
the second output end of the heater is connected with the first input end of the spray dryer through a second valve, the first output end of the spray dryer is connected with the input end of a second water pump through a first valve, and the output end of the second water pump is connected with the second input end of the heater;
the second output end of the spray dryer is connected with the flue through an induced draft fan;
the input end of the air preheater is connected with a flue gas outlet of the boiler, the output end of the air preheater is connected with the dust remover through a flue, the outlet of the dust remover is connected with the flue gas desulfurization system, the first output end of the flue gas desulfurization system is connected with the chimney, and the second output end of the flue gas desulfurization system is connected with the input end of the dehydration system;
the output end of the dewatering system is connected with the input end of the desulfurization wastewater storage tank, the output end of the desulfurization wastewater storage tank is connected with the input end of the first water pump, the output end of the first water pump and the output end of the air pump are connected with the nozzle together, and the nozzle extends into the top inside the spray dryer from the second input end of the spray dryer.
2. The combined type desulfurization wastewater zero-discharge treatment system of claim 1, further comprising a hot oil tank and a cold oil tank;
the input end of the hot oil tank is connected with the output end of the heat collector, and the output end of the hot oil tank is connected with the first input end of the heater;
the input of cold oil tank is connected the first output of heater, and the input of oil pump is connected to the output of cold oil tank.
3. The combined type desulfurization wastewater zero-discharge treatment system of claim 1, further comprising a steam turbine intermediate pressure cylinder, a third valve and a fourth valve;
the input end of the steam turbine intermediate pressure cylinder is connected with a steam extraction port of the boiler, the output end of the steam turbine intermediate pressure cylinder is connected with a third valve, and the third valve is connected with the first input end of the spray dryer;
one end of the fourth valve is connected with the first output end of the spray dryer, and the other end of the fourth valve is connected with the heat regenerator.
4. The combined type desulfurization wastewater zero-discharge treatment system of claim 1, further comprising a heliostat;
the heliostat is used for reflecting the solar rays to the heat collector.
5. The combined type desulfurization wastewater zero-discharge treatment system of claim 1, wherein the heating temperature of the heater is 200-300 ℃.
6. The combined type desulfurization wastewater zero-discharge treatment system of claim 1, wherein the heat transfer oil is simethicone.
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