CN109133234A - A kind of desulfurization wastewater Zero discharging system - Google Patents
A kind of desulfurization wastewater Zero discharging system Download PDFInfo
- Publication number
- CN109133234A CN109133234A CN201811180355.8A CN201811180355A CN109133234A CN 109133234 A CN109133234 A CN 109133234A CN 201811180355 A CN201811180355 A CN 201811180355A CN 109133234 A CN109133234 A CN 109133234A
- Authority
- CN
- China
- Prior art keywords
- tower
- drying tower
- desulfurization wastewater
- discharging system
- rotary atomizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
- C02F1/12—Spray evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention discloses a kind of desulfurization wastewater Zero discharging system, including the boiler, deduster and desulfurizing tower set gradually, drying tower is additionally provided between the boiler and the deduster, the tower top of the drying tower is additionally provided with rotary atomizer, the rotary atomizer high speed rotation, the waste water that desulfurizing tower generates are injected into drying tower by the rotary atomizer；Airflow guiding device is provided in the drying tower, the flue gas that boiler generates is entered in the drying tower by the gas inlet, it is formed under the water conservancy diversion of the airflow guiding device and rotates downward air-flow, and the flow rotation direction is opposite with the direction of rotation of the rotary atomizer.Desulfurization wastewater Zero discharging system through the invention carries out wastewater treatment, desulfurization wastewater directly by rotary atomizer be atomized after with hot fume in drying tower flash evapn, no sludge generates, and the construction cost and operating cost of desulfurization wastewater Zero discharging system is greatly lowered without heating in the process.
Description
Technical field
The present invention relates to a kind of waste water treatment systems, are specifically related to a kind of exhaust system of desulfurization wastewater.
Background technique
Desulfurization wastewater is mainly the discharge water on absorption tower during boiler smoke wet desulphurization (limestone/gypsum method).For
The balance for maintaining desulfurizer serum recycle system substance, preventing soluble fraction i.e. cl concn in flue gas is more than specified value and guarantor
Demonstrate,prove gypsum quality, it is necessary to a certain amount of waste water is discharged from system, waste water is mainly from gypsum dehydration and cleaning system.In waste water
The impurity contained mainly includes suspended matter, oversaturated sulphite, sulfate and heavy metal, wherein being much national environmental protection
The first pollutant of strict control is required in standard.In order to reduce waste water outlet pollution on the environment, need to take phase
The technical measures answered realize real zero-emission to it.
The domestic technique for desulfurization wastewater zero-emission at present, mainly there is embrane method+evaporative crystallization technique, flue direct injection technology
And bypass flue evaporation technique etc., but there is the problems such as operating cost height, system bulky complex in these treatment process.It is right
For enterprise, high construction cost and processing cost are difficult to bear.Therefore current major problem is that how to change
Into the discharge technology of desulfurization wastewater, the construction cost and operating cost of desulfurization wastewater Zero discharging system are reduced.
Summary of the invention
Goal of the invention: a kind of with desulfurization wastewater rotation spray present invention aims in view of the deficiencies of the prior art, providing
Moisture in waste water is become steam using hot fume and is discharged into atmosphere, sulphur by the desulfurization wastewater Zero discharging system of mist new drying technique
Hydrochlorate becomes solid powder recycling.
Technical solution: desulfurization wastewater Zero discharging system of the present invention, including the boiler, deduster and desulfurization set gradually
Tower is additionally provided with drying tower between the boiler and the deduster, gas inlet is provided at the top of the drying tower, dry
The bottom of tower is provided with exhanst gas outlet, the gas inlet of the drying tower and the outlet of boiler, the flue gas of the drying tower
The inlet communication of outlet and the deduster；
The tower top of the drying tower is additionally provided with rotary atomizer, and the inlet of the rotary atomizer is useless with the desulfurizing tower
Water out connection, the rotary atomizer high speed rotation, the waste water that desulfurizing tower generates are injected into dry by the rotary atomizer
In dry tower；
Airflow guiding device is provided in the drying tower, the flue gas that boiler generates enters the drying by the gas inlet
In tower, is formed under the water conservancy diversion of the airflow guiding device and rotate downward air-flow, and the flow rotation direction and the rotation
The direction of rotation for turning atomizer is opposite.
Further preferably technical solution is the present invention, and the gas inlet position is corresponded in the drying tower and is provided with wind
Road, the air duct are isobaric spiral air duct, and the airflow guiding device is arranged in the air duct.
Preferably, the airflow guiding device includes the first guide vane group for accelerating air-flow and for changing air-flow
Second guide vane group of flow direction.
Preferably, the top of the drying tower is cylinder-like structure, and lower part is vertebral body structure, the horizontal folder of lower part centrum
Angle is greater than 60 °.
Preferably, the tower bottom of the drying tower is additionally provided with heating device and pneumatic hammer.
Preferably, the rotary atomizer includes motor and atomizing disk, the inlet of the atomizing disk and desulfurizing tower it is useless
Water out connection, atomizing disk high speed rotation under the driving of the motor spray to the waste water that desulfurizing tower generates by institute with mist
State the flue gas that gas inlet enters in drying tower.
Preferably, the motor is connect with electric control box, and the electric control box controls the working condition of the motor.
Preferably, connected between the inlet of the rotary atomizer and the wastewater outlet of the desulfurizing tower by waste line
Logical, the waste line inner fluid speed is 1 ~ 2m/s, and flow control valve is located at the end of the waste line.
Preferably, on the waste line elbow radius of curvature R/D=4 ~ 6.
The utility model has the advantages that drying tower is set between boiler and deduster in (1) present invention, the height come out from boiler economizer
It is tangential to accelerate after warm flue gas enters drying tower, under the action of airflow guiding device, flue gas is made to generate downward spiral air flow,
Meanwhile it also being sprayed into drying tower from the waste water that desulfurizing tower is discharged is fog-like under the action of rotary atomizer, and flow rotation side
To the direction of rotation with rotary atomizer on the contrary, misty waste water drop and flue gas generates fierce collision, the moisture in waste water
Directly evaporation is discharged into atmosphere under the action of high-temperature flue gas, and sulfate becomes solid powder and enters dry tower bottom with flue gas；It is logical
It crosses desulfurization wastewater Zero discharging system of the invention and carries out wastewater treatment, do not need to carry out Wastewater Pretreatment, desulfurization wastewater is directly logical
Flash evapn, no sludge generation in drying tower with hot fume after rotary atomizer atomization are crossed, and is not necessarily to heating in the process；This is de-
Sulphur wastewater zero discharge system process is short, process equipment is few, and the construction cost and fortune of desulfurization wastewater Zero discharging system is greatly lowered
Row cost；
(2) gas inlet position is corresponded in the present invention in drying tower and is provided with isobaric spiral air duct air duct, flue gas enters
It presses spiral air duct to generate preliminary rotation speed, while generating identical pressure in each section of air inlet duct, to guarantee each
The air flow method consistency in section；In addition, airflow guiding device is arranged in the air duct, the cigarette of uniform flux and uniform pressure
Gas is further speeded up by the first guide vane group of airflow guiding device, is exported downwards by the second guide vane group, is guaranteed
Flue gas flows smoothly, and the spraying area of flue gas guiding rotary atomizer aggravates flue gas more with absorbent by airflow guiding device
Strong collision improves the contact area of flue gas and absorbent, and increase reacts contact surface with sour gas, to improve depickling effect
Fruit；
(3) dry tower bottom is provided with heating device in the present invention, sour dewing corrosion can be prevented dry drying tower integral heat insulation
Dry tower；Dry tower bottom is provided with pneumatic hammer simultaneously, places dust bonding and builds bridge；
(4) rotary atomizer is the key equipment for realizing waste water atomization in the present invention, and rotary atomizer includes motor and atomizing disk,
Atomizing disk high speed rotation under the driving of the motor, principle are the centrifugal force using rotary atomizer, are revolving waste water feed liquid
Turn surface and rise exhibition to be film, and is realized when leaving atomization plate edge with ever-increasing speed to the border movement of atomizing disk
Solution is converted to fine mist；
(5) it since brine waste is easy precipitated crystal during transportation, results in blockage, therefore the pipeline of brine waste and general
Water pipe is different, and in the present invention, waste line inner fluid speed is 1 ~ 2m/s, and reduces elbow to the greatest extent, the elbow not being avoided that,
Its radius of curvature R/D=4 ~ 6, radius of curvature are big.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of desulfurization wastewater Zero discharging system of the present invention；
In figure, 1- boiler, 2- drying tower, 3- deduster, 4- desulfurizing tower, 5- wastewater disposal basin, 6- rotary atomizer, 7- electrical control
Case.
Specific embodiment
Technical solution of the present invention is described in detail below by attached drawing, but protection scope of the present invention is not limited to
The embodiment.
Embodiment: a kind of desulfurization wastewater Zero discharging system, including boiler 1, drying tower 2, deduster 3 and desulfurizing tower 4, it is dry
The top of tower 2 is provided with gas inlet, and the bottom of drying tower 2 is provided with gas inlet, the gas inlet and boiler 1 of drying tower 2
Outlet, the outlet of the inlet communication of the exhanst gas outlet of drying tower 2 and deduster 3, deduster 3 passes through blower and desulfurizing tower
The outlet of 4 inlet communication, desulfurizing tower 4 is connected to wastewater disposal basin 5, and waste water is discharged into wastewater disposal basin 5.
The top of drying tower 2 is cylinder-like structure, and lower part is vertebral body structure, and the horizontal sextant angle of lower part centrum is greater than 60 °.
The tower bottom of drying tower 2 is additionally provided with heating device and pneumatic hammer.
The tower top of drying tower 2 is additionally provided with rotary atomizer 6, and rotary atomizer 6 includes motor and atomizing disk, atomizing disk
Inlet is connected to by pump and waste line with wastewater disposal basin 5, and the waste water in wastewater disposal basin 5 enters in atomizing disk, and atomizing disk is in motor
Driving under high speed rotation, waste water is mist sprayed into drying tower 2.Motor is connect with electric control box 7, electric control box
The working condition of 7 control motors.Waste line inner fluid speed is 1 ~ 2m/s, and flow control valve is located at the end of waste line
End.Radius of curvature R/D=4 ~ 6 of elbow on waste line.
Gas inlet position is corresponded in drying tower 2 and is provided with air duct, and air duct is isobaric spiral air duct, is provided in air duct
Airflow guiding device, airflow guiding device include the first guide vane group for accelerating air-flow and for changing air flow direction
Second guide vane group.The flue gas that boiler 1 generates is entered in drying tower 2 by gas inlet, under the water conservancy diversion of airflow guiding device
It is formed and rotates downward air-flow, and flow rotation direction is opposite with the direction of rotation of rotary atomizer 6.
It is computed, the direct energy consumption of desulfurization wastewater per ton is handled about using desulfurization wastewater Zero discharging system of the invention are as follows:
11kwh。
As described above, must not be explained although the present invention has been indicated and described referring to specific preferred embodiment
For the limitation to invention itself.It without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right
Various changes can be made in the form and details for it.
Claims (9)
1. a kind of desulfurization wastewater Zero discharging system, including the boiler, deduster and desulfurizing tower set gradually, which is characterized in that institute
It states and is additionally provided with drying tower between boiler and the deduster, gas inlet is provided at the top of the drying tower, drying tower
Bottom is provided with exhanst gas outlet, the gas inlet of the drying tower and the outlet of boiler, the exhanst gas outlet of the drying tower
With the inlet communication of the deduster；
The tower top of the drying tower is additionally provided with rotary atomizer, and the inlet of the rotary atomizer is useless with the desulfurizing tower
Water out connection, the rotary atomizer high speed rotation, the waste water that desulfurizing tower generates are injected into dry by the rotary atomizer
In dry tower；
Airflow guiding device is provided in the drying tower, the flue gas that boiler generates enters the drying by the gas inlet
In tower, is formed under the water conservancy diversion of the airflow guiding device and rotate downward air-flow, and the flow rotation direction and the rotation
The direction of rotation for turning atomizer is opposite.
2. desulfurization wastewater Zero discharging system according to claim 1, which is characterized in that correspond to the cigarette in the drying tower
Gas entrance location is provided with air duct, and the air duct is isobaric spiral air duct, and the airflow guiding device is arranged in the air duct
It is interior.
3. desulfurization wastewater Zero discharging system according to claim 2, which is characterized in that the airflow guiding device includes using
In the first guide vane group for accelerating air-flow and for changing the second guide vane group of air flow direction.
4. desulfurization wastewater Zero discharging system according to claim 1, which is characterized in that the top of the drying tower is cylinder
Shape structure, lower part are vertebral body structure, and the horizontal sextant angle of lower part centrum is greater than 60 °.
5. desulfurization wastewater Zero discharging system according to claim 4, which is characterized in that the tower bottom of the drying tower is also set up
There are heating device and pneumatic hammer.
6. desulfurization wastewater Zero discharging system according to claim 1, which is characterized in that the rotary atomizer includes motor
And atomizing disk, the inlet of the atomizing disk are connected to the wastewater outlet of desulfurizing tower, atomizing disk is high under the driving of the motor
The waste water that desulfurizing tower generates is sprayed to the flue gas entered in drying tower by the gas inlet with mist by speed rotation.
7. desulfurization wastewater Zero discharging system according to claim 6, which is characterized in that the motor and electric control box connect
It connects, the electric control box controls the working condition of the motor.
8. desulfurization wastewater Zero discharging system according to claim 1, which is characterized in that the inlet of the rotary atomizer
It is connected between the wastewater outlet of the desulfurizing tower by waste line, the waste line inner fluid speed is 1 ~ 2m/s, stream
Adjustable valve door is located at the end of the waste line.
9. desulfurization wastewater Zero discharging system according to claim 8, which is characterized in that the song of elbow on the waste line
Rate radius R/D=4 ~ 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180355.8A CN109133234A (en) | 2018-10-10 | 2018-10-10 | A kind of desulfurization wastewater Zero discharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180355.8A CN109133234A (en) | 2018-10-10 | 2018-10-10 | A kind of desulfurization wastewater Zero discharging system |
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| Publication Number | Publication Date |
|---|---|
| CN109133234A true CN109133234A (en) | 2019-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811180355.8A Pending CN109133234A (en) | 2018-10-10 | 2018-10-10 | A kind of desulfurization wastewater Zero discharging system |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255651A (en) * | 2019-07-04 | 2019-09-20 | 中国华电科工集团有限公司 | A kind of double U stroke waste water spray drying towers |
| CN110697823A (en) * | 2019-11-03 | 2020-01-17 | 中国华电科工集团有限公司 | Desulfurization wastewater drying device and method |
| CN111320223A (en) * | 2020-03-31 | 2020-06-23 | 大唐环境产业集团股份有限公司 | Drying tower and method for preventing desulfurization wastewater from sticking to wall and desulfurization wastewater treatment system |
| CN113443673A (en) * | 2021-07-07 | 2021-09-28 | 南方电网电力科技股份有限公司 | Spray drying tower |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207511866U (en) * | 2017-11-14 | 2018-06-19 | 江苏瑞帆环保工程股份有限公司 | A kind of device of desulfurization wastewater zero-emission using rotating spraying mode |
| CN209161542U (en) * | 2018-10-10 | 2019-07-26 | 江苏海澜正和环境科技有限公司 | A kind of desulfurization wastewater Zero discharging system |
-
2018
- 2018-10-10 CN CN201811180355.8A patent/CN109133234A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207511866U (en) * | 2017-11-14 | 2018-06-19 | 江苏瑞帆环保工程股份有限公司 | A kind of device of desulfurization wastewater zero-emission using rotating spraying mode |
| CN209161542U (en) * | 2018-10-10 | 2019-07-26 | 江苏海澜正和环境科技有限公司 | A kind of desulfurization wastewater Zero discharging system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255651A (en) * | 2019-07-04 | 2019-09-20 | 中国华电科工集团有限公司 | A kind of double U stroke waste water spray drying towers |
| CN110697823A (en) * | 2019-11-03 | 2020-01-17 | 中国华电科工集团有限公司 | Desulfurization wastewater drying device and method |
| CN111320223A (en) * | 2020-03-31 | 2020-06-23 | 大唐环境产业集团股份有限公司 | Drying tower and method for preventing desulfurization wastewater from sticking to wall and desulfurization wastewater treatment system |
| CN111320223B (en) * | 2020-03-31 | 2024-02-09 | 大唐环境产业集团股份有限公司 | Drying tower and method for preventing desulfurization wastewater from sticking to wall and desulfurization wastewater treatment system |
| CN113443673A (en) * | 2021-07-07 | 2021-09-28 | 南方电网电力科技股份有限公司 | Spray drying tower |
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