CN114288691A - Evaporation plant for treating high-salt and high-organic wastewater by using high-temperature flue gas - Google Patents
Evaporation plant for treating high-salt and high-organic wastewater by using high-temperature flue gas Download PDFInfo
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- CN114288691A CN114288691A CN202210114352.4A CN202210114352A CN114288691A CN 114288691 A CN114288691 A CN 114288691A CN 202210114352 A CN202210114352 A CN 202210114352A CN 114288691 A CN114288691 A CN 114288691A
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Abstract
The invention discloses an evaporation device for treating high-salinity high-organic-matter wastewater by using high-temperature flue gas, which comprises a multi-stage treatment device, wherein the multi-stage treatment device is smoothly and sequentially connected along the treatment, the treatment device comprises a flue gas inlet assembly, an evaporation tower and a wastewater circulating assembly arranged in the evaporation tower, the flue gas inlet assembly is used for providing the high-temperature flue gas for the evaporation tower, a wastewater inlet and an exhaust port are arranged on the evaporation tower, and the high-temperature flue gas is used for evaporating the wastewater into water vapor and discharging the water vapor from the exhaust port. This application utilizes the flue gas waste heat to add thermal evaporation and utilize the concentrated evaporation to dryness waste water of high temperature flue gas to industrial waste water, and in the evaporating tower, waste water is heated the evaporation step by the flue gas, and is concentrated step by step, and the flue gas is fully washed, guarantees the treatment effect to flue gas and waste water, and two kinds of discarded objects combine to handle, abundant utilization the energy, energy-concerving and environment-protective and reduce the cost of handling waste water.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an evaporation device for treating high-salinity high-organic-matter wastewater by using high-temperature flue gas.
Background
The industries such as printing and dyeing, papermaking, medical intermediates, pesticides and chemical industry can generate a large amount of wastewater containing salt and organic matters in the production process, and the wastewater has high salt content, serious pollution and no recycling value and can be discharged after being treated.
At present, most of high-salt and high-organic wastewater is concentrated by using a spray drying tower, large energy is consumed during concentration, and waste gas generated in the treatment process needs to be subjected to secondary treatment, so that the energy consumption is large.
Most chemical plants have a large amount of high-temperature flue gas and waste water in the production process, and if the high-temperature flue gas and the waste water can be effectively combined, secondary utilization and efficient treatment of energy sources can be realized.
Disclosure of Invention
In order to utilize the high temperature flue gas to get rid of the purification with salinity and organic matter in the waste water, this application provides an evaporation plant who utilizes high temperature flue gas to handle high salt high organic matter waste water, can the energy saving, energy-concerving and environment-protective.
The application provides an utilize evaporation plant of high temperature flue gas treatment high salt high organic matter waste water adopts following technical scheme:
the utility model provides a spray drying tower with high salt high organic matter waste water is handled to high temperature flue gas, includes multi-stage treatment device, and multi-stage treatment device links to each other in proper order smoothly along handling, processing apparatus includes flue gas admit air subassembly, evaporation tower and sets up the waste water circulation subassembly in the evaporation tower, the flue gas admit air subassembly is used for providing the high temperature flue gas for the evaporation tower, be provided with waste water import and gas vent on the evaporation tower, the high temperature flue gas is used for evaporating waste water into steam and discharges from the gas vent.
Through above-mentioned technical scheme, the flue gas waste heat heats the evaporation and utilizes the concentrated evaporation to dryness waste water of high temperature flue gas to industrial waste water, and in the evaporating tower, waste water is heated the evaporation step by the flue gas, and is concentrated step by step, and the flue gas is fully washed, guarantees the treatment effect to flue gas and waste water, and two kinds of discarded objects combine to handle, abundant utilization the energy, energy-concerving and environment-protective and reduce the cost of handling waste water.
Furthermore, the waste water circulating assembly comprises a circulating pipeline and a spraying pipeline, one end of the circulating pipeline is communicated with the lower end part of the evaporation tower, the other end of the circulating pipeline is communicated with the spraying pipeline, and a plurality of spray heads are arranged on the spraying pipeline;
the flue gas inlet assembly comprises a flue gas collecting tank and a flue gas pipeline communicated with the flue gas collecting tank, the flue gas pipeline is communicated with the evaporation tower, and the gas inlet end of the flue gas pipeline is arranged below the spray head.
Through above-mentioned technical scheme, waste water enters into the evaporating tower from the waste water import in, and pile up in the bottom, utilize power supplies such as water pump to make waste water enter into the circulating line, waste water reentrant spray piping in the circulating line, waste water in the spray piping sprays the evaporating tower after the shower nozzle atomizing again, high temperature flue gas enters into the evaporating tower through flue gas pipeline this moment, and be located the below of waste water smoke, can collide with water smoke mutually, waste water is evaporated into steam, flow upwards under the effect of flue gas, and impurity can move downwards and pile up again in the evaporating tower bottom.
Furthermore, the spray head is positioned below the spray pipeline, and the spray opening faces downwards.
Through above-mentioned technical scheme, the shower nozzle spun fog that sets up downwards can be abundant contact with the high temperature flue gas, and the effect of evaporative concentration is better.
Furthermore, a plurality of defoamers are arranged in the evaporation tower.
Through above-mentioned technical scheme, can get rid of the impurity in the evaporation process steam, guarantee the cleanliness factor of the steam of upwards discharging, improve treatment effeciency and effect.
Furthermore, the exhaust port is communicated with a high-temperature steam circulating pipe, and the high-temperature steam circulating pipe on the last evaporation tower is communicated with the flue gas pipeline on the next evaporation tower.
Through the technical scheme, high-temperature steam subjected to evaporation treatment in the upper-stage evaporation tower can be introduced into the lower-stage evaporation tower, wastewater is continuously and circularly concentrated, and the cleanliness of the treated wastewater and flue gas is finally ensured.
Furthermore, the lower end of the evaporation tower is provided with a slag discharge port, and a slag discharge valve is arranged on the slag discharge port.
Through above-mentioned technical scheme, constantly by concentrated waste water residue can pile up all the time in the bottom of evaporating tower, the staff can be through the residue in the row's cinder notch regular clearance evaporating tower, guarantees waste water concentration treatment's effect.
Furthermore, a heat exchanger is arranged on the circulating pipeline and used for preheating the wastewater in the circulating pipeline.
Through adopting above-mentioned technical scheme, the heat exchanger can preheat the waste water in the circulating line, consequently the evaporation rate when waste water enters into in the evaporating tower and contacts with high temperature flue gas is faster, and the effect of evaporation is better.
To sum up, the application comprises the following beneficial technical effects:
the waste heat of flue gas heats the evaporation and utilizes the concentrated evaporation to dryness waste water of high temperature flue gas to industrial waste water, and in the evaporating tower, waste water is heated by the flue gas step by step and is evaporated, and is concentrated step by step, and the flue gas is fully washed, can directly the evacuation at last, and the waste residue is concentrated through row cinder notch and is discharged, also can carry out the reutilization, has solved the high enriched industrial waste water of chemical plant and the processing of high temperature flue gas, has reduced environmental pollution, has reduced the high enriched industrial waste water treatment cost of chemical plant. The invention has the advantages of reasonable design, low energy consumption, obvious economic benefit and the like, and can be popularized and used in thermal power plants or chemical plants.
Drawings
FIG. 1 is a schematic overall structure of the present application;
FIG. 2 is a front view showing a part of the structure of an evaporation apparatus;
FIG. 3 is a partial structural plan view of the evaporation apparatus;
fig. 4 is a sectional view taken along the line a-a in fig. 3.
The reference numbers in the figures illustrate:
1. a processing device; 2. a flue gas inlet assembly; 21. a flue gas collection tank; 22. a flue gas duct; 3. an evaporation tower; 4. a wastewater circulation assembly; 41. a circulation pipe; 42. a spray pipe; 43. a spray head; 5. a wastewater inlet; 6. an exhaust port; 7. a demister; 8. a high temperature steam circulation pipe; 9. a slag discharge port; 91. a slag discharge valve; 10. a heat exchanger.
Detailed Description
The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those of ordinary skill in the art without any inventive work based on the embodiments in the present application belong to the protection scope of the present application.
In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses utilize high temperature flue gas to handle evaporation plant of high salt high organic matter waste water, including multi-stage treatment device 1, multi-stage treatment device 1 links to each other in proper order smoothly along handling, processing apparatus 1 includes flue gas air intake component 2, evaporation tower 3 and the waste water circulation subassembly 4 of setting in evaporation tower 3, flue gas air intake component 2 is used for providing the high temperature flue gas for evaporation tower 3, be provided with waste water import 5 and gas vent 6 on the evaporation tower 3, the high temperature flue gas is used for evaporating waste water into steam and discharges from gas vent 6.
The waste water circulating assembly 4 comprises a circulating pipeline 41 and a spraying pipeline 42, one end of the circulating pipeline 41 is communicated with the lower end part of the evaporation tower 3, the other end of the circulating pipeline is communicated with the spraying pipeline 42, a plurality of spray heads 43 are arranged on the spraying pipeline 42, and the spray heads 43 are positioned below the spraying pipeline 42 with the spray openings facing downwards.
Flue gas inlet assembly 2 includes flue gas collecting tank 21 and the flue gas pipeline 22 with flue gas collecting tank 21 intercommunication, and flue gas pipeline 22 is linked together with evaporating tower 3, and the inlet end setting of flue gas pipeline 22 is in the below of shower nozzle 43, and flue gas waste heat heats the evaporation and utilizes the concentrated evaporation to dryness waste water of high temperature flue gas to industrial waste water. Waste water enters into evaporating tower 3 from waste water import 5, and pile up in the bottom, utilize power supplies such as water pumps to make waste water enter into circulating line 41, waste water among circulating line 41 reentries spray piping 42, waste water in spray piping 42 sprays in evaporating tower 3 after the shower nozzle 43 atomizing again, high temperature flue gas enters into evaporating tower 3 through flue gas pipeline 22 this moment, and be located the below of waste water smoke, can collide with water smoke mutually, waste water is evaporated into steam, flow up under the effect of flue gas, and impurity can move down and pile up in evaporating tower 3 bottom once more.
In the evaporation tower 3, waste water is heated and evaporated step by the flue gas, and is concentrated step by step, and the flue gas is fully washed, guarantees the treatment effect to flue gas and waste water, and two kinds of discarded objects combine to handle, abundant utilization the energy, energy-concerving and environment-protective and reduce the cost of handling waste water.
Be provided with a plurality of demister 7 in the evaporation tower 3, specifically be provided with two in this embodiment, can get rid of the impurity in the evaporation process steam, guarantee the cleanliness factor of the steam of upwards discharging, improve treatment effeciency and effect.
The exhaust port 6 is communicated with a high-temperature steam circulating pipe 8, the high-temperature steam circulating pipe 8 on the previous evaporation tower 3 is communicated with a flue gas pipeline 22 on the next evaporation tower 3, high-temperature steam subjected to evaporation treatment in the previous evaporation tower 3 can be introduced into the next evaporation tower 3, wastewater is continuously and circularly concentrated, and the cleanness degree of the treated wastewater and flue gas is finally ensured.
The lower extreme of evaporating tower 3 is provided with row cinder notch 9, arrange on the cinder notch 9 set up with arrange sediment valve 91, constantly by concentrated waste water residue can pile up all the time in the bottom of evaporating tower 3, the staff can be through arranging the residue in cinder notch 9 regular clearance evaporating tower 3, guarantees waste water concentration treatment's effect.
The heat exchanger 10 is arranged on the circulating pipeline 41, the heat exchanger 10 is used for preheating the wastewater in the circulating pipeline 41, and the heat source of the heat exchanger 10 can be high-temperature flue gas in a factory, so that the flue gas can be sufficiently recycled. The heat exchanger 10 can preheat the waste water in the circulating pipeline 41, so that the evaporation speed is higher when the waste water enters the evaporation tower 3 and contacts with high-temperature flue gas, and the evaporation effect is better.
The waste heat of flue gas heats the evaporation and utilizes the concentrated evaporation to dryness waste water of high temperature flue gas to industrial waste water, in evaporating tower 3, waste water is heated by the flue gas step by step and is evaporated, and is concentrated step by step, and the flue gas is fully washed, can directly the evacuation at last, and the waste residue is concentrated through row cinder notch 9 and is discharged, also can carry out the reutilization, has solved the high enriched industrial waste water of chemical plant and the processing of high temperature flue gas, has reduced environmental pollution, has reduced the high enriched industrial waste water treatment cost of chemical plant. The invention has the advantages of reasonable design, low energy consumption, obvious economic benefit and the like, and can be popularized and used in thermal power plants or chemical plants.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The utility model provides an utilize high temperature flue gas to handle evaporation plant of high organic matter waste water of high salt which characterized in that: including multi-stage treatment device (1), multi-stage treatment device (1) links to each other in proper order smoothly along handling, processing apparatus (1) includes flue gas air intake component (2), evaporation tower (3) and sets up waste water circulation subassembly (4) in evaporation tower (3), flue gas air intake component (2) are used for providing the high temperature flue gas for evaporation tower (3), be provided with waste water import (5) and gas vent (6) on evaporation tower (3), the high temperature flue gas is used for evaporating waste water into steam and discharges from gas vent (6).
2. The evaporation device for treating high-salinity high-organic wastewater by using high-temperature flue gas as claimed in claim 1, is characterized in that: the waste water circulating assembly (4) comprises a circulating pipeline (41) and a spraying pipeline (42), one end of the circulating pipeline (41) is communicated with the lower end part of the evaporation tower (3), the other end of the circulating pipeline is communicated with the spraying pipeline (42), and a plurality of spray heads (43) are arranged on the spraying pipeline (42);
the flue gas subassembly (2) of admitting air includes flue gas collecting tank (21) and flue gas pipeline (22) with flue gas collecting tank (21) intercommunication, flue gas pipeline (22) with evaporation tower (3) are linked together, the inlet end setting of flue gas pipeline (22) is in the below of shower nozzle (43).
3. The evaporation device for treating high-salinity high-organic wastewater by using high-temperature flue gas as claimed in claim 2, is characterized in that: the spray head (43) is positioned below the spray pipeline (42) and the spray opening faces downwards.
4. The evaporation device for treating high-salinity high-organic wastewater by using high-temperature flue gas as claimed in claim 2, is characterized in that: a plurality of defoamers (7) are arranged in the evaporation tower (3).
5. The evaporation device for treating high-salinity high-organic wastewater by using high-temperature flue gas as claimed in claim 2, is characterized in that: the exhaust port (6) is communicated with a high-temperature steam circulating pipe (8), and the high-temperature steam circulating pipe (8) on the previous evaporation tower (3) is communicated with a flue gas pipeline (22) on the next evaporation tower (3).
6. The evaporation device for treating high-salinity high-organic wastewater by using high-temperature flue gas as claimed in claim 1, is characterized in that: the lower end of the evaporation tower (3) is provided with a slag discharge port (9), and a slag discharge valve (91) is arranged on the slag discharge port (9).
7. The evaporation device for treating high-salinity high-organic wastewater by using high-temperature flue gas as claimed in claim 2, is characterized in that: the heat exchanger (10) is arranged on the circulating pipeline (41), and the heat exchanger (10) is used for preheating the wastewater in the circulating pipeline (41).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210114352.4A CN114288691A (en) | 2022-01-30 | 2022-01-30 | Evaporation plant for treating high-salt and high-organic wastewater by using high-temperature flue gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210114352.4A CN114288691A (en) | 2022-01-30 | 2022-01-30 | Evaporation plant for treating high-salt and high-organic wastewater by using high-temperature flue gas |
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| CN113023984A (en) * | 2021-02-26 | 2021-06-25 | 中国华能集团清洁能源技术研究院有限公司 | Desulfurization wastewater low-temperature concentration system and method |
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2022
- 2022-01-30 CN CN202210114352.4A patent/CN114288691A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001062443A (en) * | 1999-08-27 | 2001-03-13 | Maywa Co Ltd | Waste water discharging method and device therefor |
| CN104307313A (en) * | 2014-11-03 | 2015-01-28 | 苏州克利亚环保科技有限公司 | Multistage exhaust gas washing tower |
| CN107792907A (en) * | 2016-09-05 | 2018-03-13 | 北京朗新明环保科技有限公司 | A kind of new evaporation concentration system that hc effluent is handled using fume afterheat |
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