CN209872423U - Desulfurization waste water zero release device based on high temperature evaporation - Google Patents
Desulfurization waste water zero release device based on high temperature evaporation Download PDFInfo
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- CN209872423U CN209872423U CN201920163289.7U CN201920163289U CN209872423U CN 209872423 U CN209872423 U CN 209872423U CN 201920163289 U CN201920163289 U CN 201920163289U CN 209872423 U CN209872423 U CN 209872423U
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- waste water
- desulfurization waste
- desulfurization
- discharge device
- temperature evaporation
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Abstract
The utility model belongs to the technical field of desulfurization waste water treatment, in particular to a desulfurization waste water zero discharge device based on high-temperature evaporation, which comprises a boiler outlet flue, a dust remover, an induced draft fan, a desulfurizing tower and a chimney which are connected in sequence; the boiler outlet flue is of an expansion structure so that the flow velocity of flue gas in the boiler outlet flue reaches a preset flow velocity; a plurality of spray guns are distributed in the boiler outlet flue; the desulfurization waste water of the desulfurization tower is communicated to each spray gun through a water pump, and the desulfurization waste water sprayed out of the spray guns is evaporated at high temperature in a flue at the outlet of the boiler. The utility model discloses a desulfurization waste water zero release device based on high temperature evaporation has solved the problem of desulfurization waste water zero release through spouting into desulfurization waste water in to boiler outlet flue.
Description
Technical Field
The utility model belongs to the technical field of desulfurization waste water treatment, concretely relates to desulfurization waste water zero release device based on high temperature evaporation.
Background
The shortage of water resources and the water environment pollution not only restrict the sustainable development of the socioeconomic in China, but also become the problems which need to be solved for the construction of the social ecological civilization. In recent years, along with the coming out and implementation of a series of regulation policies such as "New environmental protection Law", "the opinion on the third party treatment of environmental pollution in the office of State Council", "Water pollution action plan" and the like, the high importance of water environment pollution prevention work in China is reflected.
In 2016, 9 and 30 days, the department of environmental protection issues and requests the technical policy of pollution control of thermal power plants and the opinion contents of the technical guideline of optimal feasibility of pollution control of thermal power plants, and the policy of making pollution caused by waste gas, waste water, noise, solid waste and the like discharged by the thermal power plants, wherein the waste water is encouraged to be recycled and not discharged, and the research and development of the desulfurization waste water zero-discharge process are particularly emphasized.
At present, the wet desulphurization of coal-fired power plants needs to discharge desulphurization waste water, and the treatment of the desulphurization waste water becomes a difficult problem of a plurality of power plants.
SUMMERY OF THE UTILITY MODEL
Based on the above-mentioned not enough that exists among the prior art, the utility model provides a desulfurization waste water zero release device based on high temperature evaporation.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
the desulfurization wastewater zero-discharge device based on high-temperature evaporation comprises a boiler outlet flue, a dust remover, an induced draft fan, a desulfurization tower and a chimney which are sequentially connected; the boiler outlet flue is of an expansion structure so that the flow velocity of flue gas in the boiler outlet flue reaches a preset flow velocity; a plurality of spray guns are distributed in the boiler outlet flue; the desulfurization waste water of the desulfurization tower is communicated to each spray gun through a water pump, and the desulfurization waste water sprayed out of the spray guns is evaporated at high temperature in a flue at the outlet of the boiler.
Preferably, the desulfurization tower is communicated with a dehydration system, and the desulfurization wastewater is derived from the dehydration system.
Preferably, the dewatering system is communicated with the jet distributor through a waste water pipeline, the waste water pipeline is provided with the water pump, and the jet distributor is communicated with all the spray guns.
As the preferred scheme, a waste water storage tank is also arranged between the dehydration system and the water pump.
Preferably, the spray gun is a two-fluid spray gun, and accordingly, the spray distributor is connected to an air compressor.
Preferably, the two-fluid spray gun has three or five or six spray guns.
Preferably, a temperature sensor is arranged at the inlet of the dust remover and used for detecting the temperature of the flue gas at the inlet of the dust remover, so that the spray distributor can adjust the spray amount of the spray gun according to the temperature of the flue gas at the inlet of the dust remover.
Preferably, the dust remover is a bag-type dust remover.
As a preferred scheme, the bag-type dust remover is provided with a pulse type dust removing filter bag, a vibration type dust removing bag or a back blowing type dust removing bag.
Preferably, the preset flow rate is 4-6 m/s.
Preferably, a rain cap is arranged at the top of the chimney.
Compared with the prior art, the utility model, beneficial effect is:
the desulfurization waste water zero discharge device based on high-temperature evaporation solves the problem of desulfurization waste water zero discharge by spraying desulfurization waste water into the boiler outlet flue;
and moreover, the amount of the desulfurization wastewater sprayed is automatically regulated by regulating the temperature of the flue gas at the inlet of the dust remover, so that the temperature of the desulfurization wastewater is always controlled to be above the acid dew point, and the condensation of the dust remover is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a desulfurization waste water zero discharge device based on high-temperature evaporation in an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
The first embodiment is as follows:
as shown in fig. 1, the desulfurization wastewater zero-discharge device based on high-temperature evaporation of the embodiment includes a boiler outlet flue 1, a dust remover 2, an induced draft fan 3, a desulfurization tower 4, and a chimney 5, which are connected in sequence; specifically, the inlet of the boiler outlet flue 1 is connected with the flue gas outlet of the boiler 0 through a flue, the outlet of the boiler outlet flue 1 is connected with the inlet of the dust remover 2 through a flue, the outlet of the dust remover 2 is connected with the inlet of the induced draft fan 3 through a flue, the outlet of the induced draft fan 3 is connected with the flue gas inlet of the desulfurizing tower 4, and the desulfurizing tower 4 discharges the desulfurized flue gas to the outside atmosphere through the chimney 5.
The boiler outlet flue 1 of the embodiment is of an expansion structure, so that the flow velocity of the flue gas in the boiler outlet flue 1 reaches a preset flow velocity, the preset flow velocity is 4-6 m/s, and the high-temperature evaporation efficiency is ensured; in addition, three spray guns 6 are arranged in the boiler outlet flue 1 so as to spray desulfurization wastewater into the boiler outlet flue 1; the desulfurization tower 4 is communicated with a dehydration system 9, the dehydration system 9 is provided with a gypsum discharge port and a desulfurization waste water outlet, and the desulfurization waste water outlet of the dehydration system 9 is communicated with a waste water storage tank 10 through a waste water pipe so as to store desulfurization waste water in the waste water storage tank 10; the waste water storage tank 10 is communicated with the injection distributor 7 through a waste water pipeline, a water pump 8 is arranged on the waste water pipeline, and the injection distributor 7 is communicated with all the spray guns 6 so as to distribute the flow of the desulfurization waste water flowing into each spray gun; the injection distributor 7 of the embodiment evenly distributes the desulfurization wastewater fed by the wastewater pipeline to each spray gun 6; the spray gun of the embodiment is a two-fluid spray gun, correspondingly, the spray distributor 7 is connected with an air compressor, and the desulfurization wastewater is atomized by utilizing compressed air, so that atomized particles are very fine and uniform, and complete evaporation is ensured; the atomized water mist coverage area is large, the atomized water mist can be mixed with the flue gas more fully, and the flue gas cooling and volume regulation are facilitated.
The desulfurization wastewater sprayed by the spray gun 6 of the embodiment is subjected to high-temperature evaporation treatment in the boiler outlet flue 1; thereby realizing zero discharge of the desulfurization waste water. Moreover, the entrance of the dust remover 2 is provided with a temperature sensor which is used for detecting the flue gas temperature of the entrance of the dust remover 2, so that the spray distributor 7 can adjust the spray quantity of the spray gun according to the flue gas temperature of the entrance of the dust remover, namely, the desulfurization waste water quantity sprayed into the flue of the boiler outlet is adjusted through the flue gas temperature of the entrance of the dust remover, and the automatic adjustment is convenient to realize. The dust collector of this embodiment is a bag-type dust collector, and the dust-collecting filter bag can be a pulse-type dust-collecting filter bag, a vibration-type dust-collecting bag or a back-blowing type dust-collecting bag.
The desulfurization wastewater zero-discharge device based on high-temperature evaporation solves the problem of desulfurization wastewater zero discharge by spraying desulfurization wastewater into the outlet flue of the boiler; and moreover, the amount of the desulfurization wastewater sprayed is automatically regulated by regulating the temperature of the flue gas at the inlet of the dust remover, so that the temperature of the desulfurization wastewater is always controlled to be above the acid dew point, and the condensation of the dust remover is avoided.
Example two:
the desulfurization waste water zero discharge device based on high-temperature evaporation of this embodiment is different from embodiment one in that:
the number of the spray guns can be four, five, six and the like, the specific number can be designed according to actual needs, the adaptability is good, and the requirements of different application occasions can be met.
Other structures can refer to the first embodiment.
Example three:
the desulfurization waste water zero discharge device based on high-temperature evaporation of this embodiment is different from embodiment one in that:
the top of the chimney of the embodiment is provided with a rain cap to protect the top outlet of the chimney so as to prevent rainwater from damaging the chimney, such as corrosion.
Other structures can refer to the first embodiment.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.
Claims (10)
1. The desulfurization waste water zero discharge device based on high-temperature evaporation is characterized by comprising a boiler outlet flue, a dust remover, an induced draft fan, a desulfurization tower and a chimney which are sequentially connected; the boiler outlet flue is of an expansion structure so that the flow velocity of flue gas in the boiler outlet flue reaches a preset flow velocity; a plurality of spray guns are distributed in the boiler outlet flue; the desulfurization waste water of the desulfurization tower is communicated to each spray gun through a water pump, and the desulfurization waste water sprayed out of the spray guns is evaporated at high temperature in a flue at the outlet of the boiler.
2. The high-temperature evaporation-based desulfurization waste water zero discharge device is characterized in that the desulfurization tower is communicated with a dehydration system, and the desulfurization waste water is derived from the dehydration system.
3. The high-temperature evaporation-based desulfurization waste water zero discharge device is characterized in that the dehydration system is communicated with the injection distributor through a waste water pipeline, the waste water pipeline is provided with the water pump, and the injection distributor is communicated with all the spray guns.
4. The desulfurization waste water zero discharge device based on high temperature evaporation of claim 3, characterized in that a waste water storage tank is arranged between the dehydration system and the water pump.
5. The high-temperature evaporation-based desulfurization waste water zero discharge device is characterized in that the spray gun is a two-fluid spray gun, and accordingly, the spray distributor is connected with an air compressor.
6. The high-temperature evaporation-based desulfurization waste water zero discharge device is characterized in that the two-fluid spray gun is three, five or six.
7. The high-temperature evaporation-based desulfurization waste water zero discharge device is characterized in that a temperature sensor is arranged at the inlet of the dust remover, and the temperature sensor is used for detecting the flue gas temperature at the inlet of the dust remover so that the spray distributor can adjust the spray amount of the spray gun according to the flue gas temperature at the inlet of the dust remover.
8. The high-temperature evaporation-based desulfurization wastewater zero-discharge device is characterized in that the dust remover is a bag-type dust remover.
9. The high-temperature evaporation-based desulfurization wastewater zero-discharge device as claimed in claim 8, wherein the bag-type dust remover has a pulse-type dust-removing filter bag, a vibration-type dust-removing bag or a back-blowing-type dust-removing bag.
10. The high-temperature evaporation-based desulfurization waste water zero discharge device of any one of claims 1 to 9, wherein the preset flow rate is 4-6 m/s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920163289.7U CN209872423U (en) | 2019-01-30 | 2019-01-30 | Desulfurization waste water zero release device based on high temperature evaporation |
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| CN201920163289.7U CN209872423U (en) | 2019-01-30 | 2019-01-30 | Desulfurization waste water zero release device based on high temperature evaporation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112892951A (en) * | 2021-03-24 | 2021-06-04 | 大唐环境产业集团股份有限公司 | Anti-blocking device and method for desulfurization wastewater spray gun system |
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2019
- 2019-01-30 CN CN201920163289.7U patent/CN209872423U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112892951A (en) * | 2021-03-24 | 2021-06-04 | 大唐环境产业集团股份有限公司 | Anti-blocking device and method for desulfurization wastewater spray gun system |
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