CN109354090A - A kind of desulfurization wastewater evaporator and method with inert carrier circulation - Google Patents
A kind of desulfurization wastewater evaporator and method with inert carrier circulation Download PDFInfo
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- CN109354090A CN109354090A CN201811422040.XA CN201811422040A CN109354090A CN 109354090 A CN109354090 A CN 109354090A CN 201811422040 A CN201811422040 A CN 201811422040A CN 109354090 A CN109354090 A CN 109354090A
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- solid
- liquid separator
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- desulfurization wastewater
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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
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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
- 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
Abstract
The invention discloses a kind of desulfurization wastewater evaporators and method with inert carrier circulation, including heater, with the solid-liquid mixer being connect above heater, the solid-liquid separator being connect with the discharge port being arranged below heater, the gas-liquid separator being connect with the upper liquid outlet of solid-liquid separator, connect the circulating pump of gas-liquid separator and solid-liquid mixer, gas-liquid separator side is connected with densitometer, regulate and control the discharge of concentrate, gas-liquid separator side is equipped with liquidometer, regulate and control the entrance of desulfurization wastewater, lower section is equipped with concentrate liquid outlet, side is equipped with circulating water outlet and connect with circulating pump, converged by solid-liquid mixer with inert carrier, enter in heater together.Inert carrier enters solid-liquid mixer from lower end, and waste water goes successively to gas-liquid separator, is evaporated gas and is discharged from gas vent.The present invention thoroughly solves scale problems in evaporator, and cost of investment is low, stable, without secondary pollution to environment.
Description
Technical field
The present invention relates to a kind of desulfurization wastewater evaporatings, especially avoid the evaporator of desulfurization wastewater fouling.
Background technique
Desulfurization wastewater is the terminal waste water of power plant, and water quality is severe, coal variety, sulfur removal technology, moisturizing water quality and discharge week
Phase etc. can all directly affect contaminated wastewater ingredient, desulfurizing agent -- and white lime causes hardness ions content in desulfurization wastewater higher, meeting
Lead to the easy fouling blockage of processing equipment, while sulphur in coal and chloride shift form the SO4 of high concentration into desulfurization wastewater2-、Cl-,
Belong to typical high slat-containing wastewater, they can generate heavy corrosion to equipment, pipeline, also make desulfurization wastewater that can not carry out biochemistry
Processing can only take physics mode to be handled to reach recycle water standard.
Currently, the zero-emission in order to realize desulfurization wastewater, the physics mode for handling desulfurization wastewater in the market is usually to evaporate
Method not will increase solid waste content compared to chemical method, can also reduce processing cost, it is domestic main in recent years
The evaporation technique of use can be divided into evaporator evaporation and flue is spray-dried two classes.Flue spray drying is to be sent to desulfurization wastewater
Front flue of dust collector evaporates in flue after nozzle atomization, and insoluble matter is caught together with salt and flying dust by deduster in waste water
Collect and achieve the purpose that not effluent, but flue spray drying require flue-gas temperature before deduster higher, and now power station in order to
Generating efficiency is improved, cryogenic heat exchanger has been added, flue-gas temperature is very low to be recycled, while there is also atomizations to imitate for the technology
Fruit is poor, fluctuation of service leads to flue blockage, influences the normal operation of generating set, is gradually eliminated.Evaporator
Evaporating and concentrating process is that desulfurization wastewater is concentrated using power station waste hot steam, steams water and reaches reuse standard, condensed water is logical
The bypass flue drier for crossing higher temperatures flue gas is dry, and solid salt can be collected separately, can also dispose together with flying dust, the skill
Art is wide to the applicability of waste water quality, unit and coal, has wider application prospect.
Maximum problem is scale problems in evaporator evaporation technique, is usually solved with forced-circulation evaporator,
Its principle is that certain relative velocity is formed in the tube using solution, solves the problems, such as plugging, but forced-circulation evaporator scale removal
Treatment effect is unsatisfactory, and there are still following problems:
(1) forced circulation washes away the dirt on tube wall mainly by flow rate of liquid, usually require that high speed just can some effects, this
If sample, need pump head very big, power consumption is also big.
(2) scale problems still have, and cause plugging, and cleaning cycle is mostly two weeks or one month, so that evaporator is not
Energy continuous operation clears up extremely difficult, large labor intensity, and production capacity decline, is economically non-remunerative.
Summary of the invention
The present invention provide one kind can continuous circular treatment desulfurization wastewater, reach timely scale removal and economical and efficient with lazy
The desulfurization wastewater evaporator of property carrier loop.Invention also provides a kind of following with inert carrier based on above-mentioned evaporator
The sulfur method of ring.
Above desulfurization wastewater evaporator with inert carrier circulation of the invention, including heater and the heater
The solid-liquid mixer of the material inlet connection of setting, the solid-liquid separator being connect with the discharge port being arranged below heater and institute
State the gas-liquid separator of the upper liquid outlet connection of solid-liquid separator, the circulation of the connection gas-liquid separator and solid-liquid mixer
Pump, the lower section of solid-liquid separator are connect with the solids inlet of solid-liquid mixer, and gas-liquid separator one side is equipped with densitometer, another
Side is connected with liquidometer, and gas-liquid separator side is additionally provided with circulating water outlet, and lower section is equipped with concentrate regulating valve；Circulating water outlet
The circulation pipe of upper connection is connect with the import of circulating pump together after converging with the outlet of desulfurization wastewater pipe, the outlet of circulating pump and solid
The liquid-inlet of liquid mixer connects, and is provided with regulating valve, the mixed export and object of solid-liquid mixer on the desulfurization wastewater pipe
Expect import connection.
Further, in evaporator of the present invention, the heater includes parallel arrangement of multiple evaporation tubes, is separately positioned on
The circumference reducer pipe of each upper part of evaporating and the upper cover for being located at top and being covered on above all circumference reducer pipes, institute
It is rectangular for stating above circumference reducer pipe, and lower section is circle, pair of the lower section insertion circumference variable diameter lower perforated plate of each circumference reducer pipe
It answers on hole, is linked together between the top of all circumference reducer pipes using spot welding, and big among variable diameter upper perforated plate with having an area of
Square opening spot welding is simultaneously fixed, and is fully welded between upper round tube plate and evaporation tube, is had an area of and is used screw between variable diameter lower perforated plate and upper round tube plate
It is fixed.
Further, in evaporator of the present invention, inert carrier is provided in the evaporation tube, the inert carrier is partial size
Corundum or steel ball or partial size for 0.1 to 1mm are the 0.1 hollow steel ball for arriving 3mm.
Further, in evaporator of the present invention, the gas-liquid separator top is equipped with gas vent.
Of the invention has inert carrier circulation desulfurization method, comprising the following steps:
1) hot steam is conveyed to air inlet pipe, opens and adjust the regulating valve on desulfurization wastewater pipe, desulfurization wastewater is sent to following
Ring pump inlet turns down regulating valve if the variable of liquidometer is higher than setting value, if liquidometer variable is lower than setting
Value, then open big regulating valve, it is ensured that liquidometer variable is close to setting value；
2) circulating pump is opened, desulfurization wastewater is pumped into solid-liquid mixer, separated with solid-liquid separator and is entered from lower end solid
The inert carrier of liquid mixer mixes, subsequently into carrying out heating evaporation processing in heater, generation with inert carrier
Desulfurization wastewater and steam enter solid-liquid separator, and the desulfurization wastewater of solid-liquid separator separation enters gas-liquid separator；Desulfurization wastewater
In the steam that evaporates be discharged from the gas vent of gas-liquid separator upper end, the desulfurization wastewater after being heated is arranged by circulating water outlet
Out, solid-liquid mixer is pumped into through circulating pump；
3) density that the concentrate that gas-liquid separator separates go out is detected by densitometer, maintains the density of concentrate
1.1-1.6g/ml turns down concentrate regulating valve, if densitometer variable if the variable of densitometer is lower than setting value
Higher than setting value, then big concentrate regulating valve is opened.
Further, in the method for the present invention, the solid-liquid mixer is Venturi tube or star-like emptier.
The present invention is equipped with inert carrier in evaporator, as shown in figure 5, inert carrier is together with desulfurization wastewater from evaporation tube
Top enter, the conduction of heat of managed outer steam in evaporation tube, desulfurization wastewater is heated to be vaporized, and leaves evaporation tube
Afterwards, in solid-liquid separator, inert carrier is separated with desulfurization wastewater and steam, and inert carrier is arranged from solid-liquid separator lower part
Out, it in solid-liquid mixer, is sucked by desulfurization wastewater to be processed, and enters evaporation tube together, inert carrier is always in system
Interior circulation plays and constantly removes effect dirty in evaporation tube, after desulfurization wastewater evaporation, forms evaporation water and reaches recycle water standard,
Drying and other treatment can be generally carried out with reuse, concentrate.
Evaporator of the invention includes heater, solid-liquid separator, gas-liquid separator, circulating pump, solid-liquid mixer etc..Add
It is equipped with material inlet above hot device, is connect with solid-liquid mixer, lower section is equipped with discharge port, connect with solid-liquid separator.Solid-liquid point
It is connect from device upper liquid outlet with gas-liquid separator, lower section is connect with solid-liquid mixer.Solid-liquid mixer is connect with circulating pump.Gas-liquid
Separator one side is equipped with densitometer, and another side is connected with liquidometer, and side is additionally provided with circulating water outlet, and lower section is equipped with concentrate
Regulating valve；The outlet of circulating water outlet and desulfurization wastewater inlet adjusting valve, connect with circulating pump, gas-liquid separator together after converging
Top is equipped with gas vent.
Further, in apparatus of the present invention, heater includes parallel arrangement of multiple evaporation tubes, is separately positioned on each steaming
The upper covers for sending out the circumference reducer pipe above pipe and being located at top and being covered on above all circumference reducer pipes, each circumference
Be above reducer pipe it is rectangular, lower section is circle, on the corresponding aperture of the lower section insertion circumference variable diameter lower perforated plate of each circumference reducer pipe,
It is all circumference reducer pipes tops between linked together using spot welding, and with circumference variable diameter upper perforated plate among big square opening spot welding
And fix, it is fully welded between upper round tube plate and evaporation tube, has an area of and be screwed between variable diameter lower perforated plate and upper round tube plate.
Further, in apparatus of the present invention, inert carrier can be the particulate matters such as corundum or steel ball, corundum and steel ball partial size
Partial size be 0.1 arrive 1mm, hollow steel bead diameter be 0.1 arrive 3mm.
Further, in apparatus of the present invention, system flow the following steps are included:
1) hot steam is conveyed to air inlet pipe, opens and adjust the regulating valve on desulfurization wastewater pipe, desulfurization wastewater is sent to following
Ring pump inlet turns down regulating valve if the variable of liquidometer is higher than setting value, if liquidometer variable is lower than setting
Value, then open big regulating valve, it is ensured that liquidometer variable is close to setting value；
2) circulating pump is opened, desulfurization wastewater is pumped into solid-liquid mixer, is carried with the inertia being discharged from solid-liquid separator lower end
Enter after body mixing and carry out heating evaporation processing in heater, the desulfurization wastewater with inert carrier and steam of generation enter admittedly
Liquid/gas separator, isolated inert carrier enter solid-liquid mixer, and the desulfurization wastewater after heating evaporation enters gas-liquid separator；Desulfurization
The steam evaporated in waste water is discharged from the gas vent of gas-liquid separator upper end, and the desulfurization wastewater after being heated is by circulating water outlet
Discharge, is pumped into solid-liquid mixer through circulating pump；
3) density that the concentrate that gas-liquid separator separates go out is detected by densitometer, maintains the density of concentrate
1.1-1.6g/ml turns down concentrate regulating valve, if densitometer variable if the variable of densitometer is lower than setting value
Higher than setting value, then big concentrate regulating valve is opened.
A kind of desulfurization wastewater evaporator with inert carrier circulation of the invention, heater is interior to be equipped with circumference reducer pipe,
The inert carrier carried secretly in desulfurization wastewater can be smoothly assigned in each evaporation tube, and inert carrier will not be blocked on baffle.System
Flow velocity in system in vertical transport pipeline and solid-liquid separator should be determined by inert carrier sinking speed, to ensure that inert carrier can
To be recycled in the pipeline before solid-liquid separator together with desulfurization wastewater, while not flowed above solid-liquid separator with liquid
Out, solid-liquid mixer is directly entered below solid-liquid separator.Inert carrier circulation theory figure hits with inert carrier, washes away
The schematic diagram of tube wall is respectively such as Fig. 5, shown in Fig. 6.
The utility model has the advantages that compared with forced-circulation evaporator, the invention has the following advantages that
(1) discharge of concentrate can be regulated and controled according to the variable and design value of densitometer, so that concentration waste water
It can be discharged in time, to reduce the abrasion of circulation pump blade, extend the circulating pump service life, reduce cost.
(2) present invention carries out scale removal using physics mode, inert carrier is designed in evaporator, inert carrier is with desulfurization
Waste water is together in flow process, as shown in fig. 6, inert carrier and wall surface, by hitting or souring, removes the fouling of wall surface
Substance, to achieve the effect that timely snaking.
(3) inert carrier of the invention recycles scale removal, continuously-running, without chemical mode with desulfurization wastewater always
Secondary cleaning is carried out, to reduce waste liquid amount, reduces processing cost.
(4) the desulfurization wastewater evaporator operation with inert carrier circulation of the invention is continuous, will not reduce production capacity, pass through
Dominance is had more in Ji.
Detailed description of the invention
Fig. 1 is the flow diagram that the present invention has inert carrier circulation desulfurization waste water evaporator
Fig. 2 is the sectional view of heater
Fig. 3 a is circumference variable diameter upper perforated plate structure chart, and Fig. 3 b is the enlarged drawing of A structure in Fig. 3 a
Fig. 4 is circumference variable diameter lower perforated plate structure chart
Fig. 5 is inert carrier circulation figure
Fig. 6 is the schematic diagram that inert carrier hits, washes away tube wall
Fig. 7 is 1 system diagram of embodiment
Fig. 8 is 2 system diagram of embodiment
Fig. 9 is Star-like unloader side view in embodiment 2
In figure: 1- gas-liquid separator, 2- condenser pipe, 3- air inlet pipe, 4- inert carrier, 5- material inlet, 6- upper liquid outlet,
7- gas vent, 8- heater, 9- inlet, 10- discharge port, 11- solid-liquid separator, 12- circulating pump, 13- Venturi tube, 14- star
Type discharger, 15- densitometer, 16- liquidometer, 17- concentrate regulating valve, 18- regulating valve, 19- circulating water outlet, 20- circulation
Material outlet, 21- circulating water intake, 22- fan leaf, 23- solid-liquid mixer, 81- evaporation tube, 811- upper round tube plate, 82- circumference
Reducer pipe, 821- have an area of variable diameter upper perforated plate, and 822- has an area of variable diameter lower perforated plate.
Specific embodiment
Below with reference to embodiment and Figure of description, the present invention is further illustrated.
Embodiment 1
A kind of desulfurization wastewater evaporator with inert carrier circulation, the evaporator is by heater 8 and the heater 8
The Venturi tube 13 of the connection of material inlet 5 of top setting, the solid-liquid separator being connect with the discharge port 10 being arranged below heater 8
11, gas-liquid separator 1, the connection gas-liquid separator 1 and the Venturi tube being connect with the upper liquid outlet 6 of the solid-liquid separator 11
The lower section of 13 circulating pump 12, solid-liquid separator 11 is connect with the aditus laryngis of Venturi tube 13, and 1 one side of gas-liquid separator is equipped with density
Meter 15, another side are connected with liquidometer 16, and side is additionally provided with circulating water outlet 19, and lower section is equipped with concentrate regulating valve 17；Circulation
The circulation pipe connected on water out 19 is connect with the import of circulating pump 12 together after converging with the outlet of desulfurization wastewater pipe, circulating pump
12 outlet is connect with the contraction nozzle of Venturi tube 13, is provided with regulating valve 18 on the desulfurization wastewater pipe.
Heater 8 includes parallel arrangement of multiple evaporation tubes 81, the circumference change for being separately positioned on each 81 top of evaporation tube
Diameter pipe 82 and the upper cover for being located at top and being covered on above all circumference reducer pipes 82,82 top of circumference reducer pipe
To be rectangular, lower section is circle, on the corresponding aperture of the lower section insertion circumference variable diameter lower perforated plate 822 of each circumference reducer pipe 82, is owned
Have an area of and linked together between the top of reducer pipe 82 using spot welding, and the big square opening point with 821 centre of circumference variable diameter upper perforated plate
It welds and fixes, be fully welded between upper round tube plate 811 and evaporation tube 81, have an area of and used between variable diameter lower perforated plate 822 and upper round tube plate 811
Screw is fixed.
It is connected, can be made few using spot welding mode between circumference reducer pipe 82 in heater 8 and circumference variable diameter upper perforated plate 821
Number desulfurization wastewaters from gap flow into circumference variable diameter upper perforated plate 821 and circumference variable diameter lower perforated plate 822 between, but this have no effect on it is whole
The course of work of a system.
1 top of gas-liquid separator is equipped with gas vent 7.
The throat of Venturi tube 13 can carry the de- of steam by inert carrier suction line, and after can effectively preventing heating
Sulphur waste water is more to be entered in Venturi tube, and the desulfurization wastewater after having no effect on heating enters the cyclic process of gas-liquid separator 1.
Embodiment 2
A kind of desulfurization wastewater evaporator with inert carrier circulation, the evaporator is by heater 8 and the heater 8
The star-like emptier 14 of the connection of material inlet 5 of top setting, the solid-liquid point being connect with the discharge port 10 being arranged below heater 8
From device 11, the gas-liquid separator 1 being connect with the upper liquid outlet 6 of the solid-liquid separator 11, the connection gas-liquid separator 1 and star
The circulating pump 12 of type emptier 14, the lower section of solid-liquid separator 11 are connect with the solids inlet of star-like emptier 14, gas-liquid separation
1 one side of device is equipped with densitometer 15, and another side is connected with liquidometer 16, and side is additionally provided with circulating water outlet 19, and lower section is equipped with dense
Contracting liquid regulating valve 17；The outlet of the circulation pipe connected on circulating water outlet 19 and desulfurization wastewater pipe converge after together with circulating pump 12
Import connection, the outlet of circulating pump 12 connect with the bad water inlet that follows of star-like emptier 14, is arranged on the desulfurization wastewater pipe
There is regulating valve 18.
As shown in figure 9, being equipped with more fan leafs 22 inside star-like emptier 14, the blade rotated in the course of work makes from solid
The inert carrier 4 of 11 lower end of liquid/gas separator discharge enters star-like 14 bottom of emptier, while effectively withstanding top and being separated by solid-liquid separation
The a large amount of inflows for the desulfurization wastewater being heated in device 11, the desulfurization wastewater after forcing heating enter gas above solid-liquid separator 11
Liquid/gas separator 1 is recycled.
Embodiment 3
A kind of desulfurization wastewater evaporator with inert carrier circulation, into the desulfurization wastewater of entire evaporator system process
From the terminal waste water of power plant.In heater 8 in the evaporator, vapor (steam) temperature range is at 95 DEG C -160 DEG C, steam pressure
Range is in 0.085-0.618MPa.Fluid solid content is concentrated in 20-50% in 1-10% in the desulfurization wastewater solid content of entrance.Inertia
Carrier 4 is the corundum that partial size is 0.1 to 1mm or steel ball or partial size is the 0.1 hollow steel ball for arriving 3mm.
The course of work of the invention is as follows:
1) hot steam is conveyed to air inlet pipe 3, by the desulfurization wastewater of power plant's discharge by processing, makes its solid content in 1-
10%, the regulating valve 18 on desulfurization wastewater pipe is opened and adjusted, desulfurization wastewater is sent to 12 import of circulating pump, if liquidometer 16
Variable be higher than setting value, then turn down regulating valve 18, if 16 variable of liquidometer be lower than setting value, open big regulating valve
18, it is ensured that 16 variable of liquidometer is close to setting value；
2) circulating pump 12 is opened, desulfurization wastewater is pumped into Venturi tube 13 or star-like emptier 14, and from solid-liquid separator 23
Enter after the mixing of inert carrier 4 of lower end discharge and carries out heating evaporation processing in heater 8, the taking off with inert carrier of generation
Sulphur waste water and steam enter solid-liquid separator 11, and isolated inert carrier 4 enters Venturi tube 13 or star-like emptier 14, and heating is steamed
Desulfurization wastewater after hair enters gas-liquid separator 1；Gas vent of the steam evaporated in desulfurization wastewater from 1 upper end of gas-liquid separator
7 discharges, the desulfurization wastewater after being heated are discharged by circulating water outlet 19, are pumped into Venturi tube 13 or star-like emptier through circulating pump 12
14；
3) density that the concentrate that gas-liquid separator 1 is isolated is detected by densitometer 15, maintains the density of concentrate
Concentrate regulating valve 17 is turned down, if densitometer if the variable of densitometer 15 is lower than setting value in 1.1-1.6g/ml
15 variables are higher than setting value, then open big concentrate regulating valve 17.
Claims (6)
1. it is a kind of with inert carrier circulation desulfurization wastewater evaporator, which is characterized in that the evaporator include heater (8),
It is arranged below the solid-liquid mixer (23) being connect with the material inlet (5) being arranged above the heater (8) and heater (8)
The solid-liquid separator (11) of discharge port (10) connection, the gas-liquid that is connect with the upper liquid outlet (6) of the solid-liquid separator (11)
Separator (1), the circulating pump (12) for connecting the gas-liquid separator (1) and solid-liquid mixer (23), solid-liquid separator (11)
Lower section is connect with the solids inlet of solid-liquid mixer (23), and gas-liquid separator (1) one side is equipped with densitometer (15), another side
It is connected with liquidometer (16), gas-liquid separator (1) side is additionally provided with circulating water outlet (19), and lower section is equipped with concentrate regulating valve
(17)；The outlet of the circulation pipe and desulfurization wastewater pipe that are connected on circulating water outlet (19) converge after together with circulating pump (12) into
Mouth connection, the outlet of circulating pump (12) connect with the liquid-inlet of solid-liquid mixer (23), is provided on the desulfurization wastewater pipe
The mixed export of regulating valve (18), solid-liquid mixer (23) is connect with material inlet (5).
2. a kind of desulfurization wastewater evaporator with inert carrier circulation according to claim 1, which is characterized in that described
Heater (8) includes parallel arrangement of multiple evaporation tubes (81), the circumference variable diameter being separately positioned on above each evaporation tube (81)
Pipe (82) and the upper cover for being located at top and being covered on above all circumferences reducer pipe (82), the circumference reducer pipe (82)
Top be it is rectangular, lower section be circle, it is each circumference reducer pipe (82) lower section insertion circumference variable diameter lower perforated plate (822) corresponding aperture
On, it is linked together between the top of all circumferences reducer pipe (82) using spot welding, and intermediate with circumference variable diameter upper perforated plate (821)
Big square opening spot welding and fix, be fully welded between upper round tube plate (811) and evaporation tube (81), circumference variable diameter lower perforated plate (822) with
Upper round tube plate is screwed between (811).
3. a kind of desulfurization wastewater evaporator with inert carrier circulation according to claim 2, which is characterized in that described
It being provided in evaporation tube (81) inert carrier (4), the inert carrier (4) is the corundum or steel ball that partial size is 0.1 to 1mm, or
Person is that partial size is the 0.1 hollow steel ball for arriving 3mm.
4. a kind of desulfurization wastewater evaporator with inert carrier circulation according to claim 1,2 or 3, feature exist
In gas-liquid separator (1) top is equipped with gas vent (7).
5. a kind of sulfur method with inert carrier circulation, which is characterized in that method includes the following steps:
1) to air inlet pipe (3) convey hot steam, open and adjust the regulating valve (18) on desulfurization wastewater pipe, by desulfurization wastewater send to
Circulating pump (12) import turns down regulating valve (18), if liquidometer if the variable of liquidometer (16) is higher than setting value
(16) variable is lower than setting value, then opens big regulating valve (18), it is ensured that liquidometer (16) variable is close to setting value；
2) circulating pump (12) are opened, desulfurization wastewater is pumped into solid-liquid mixer (23), is separated and under with solid-liquid separator (11)
The inert carrier (4) that end enters solid-liquid mixer (23) mixes, and subsequently into heating evaporation processing is carried out in heater (8), produces
Raw desulfurization wastewater and steam with inert carrier enters solid-liquid separator (11), and the desulfurization of solid-liquid separator (11) separation is useless
Water enters gas-liquid separator (1)；The steam evaporated in desulfurization wastewater is discharged from the gas vent (7) of gas-liquid separator (1) upper end,
Desulfurization wastewater after being heated is discharged by circulating water outlet (19), is pumped into solid-liquid mixer (23) through circulating pump (12)；
3) density for the concentrate isolated by densitometer (15) detection gas-liquid separator (1), maintains the density of concentrate
Concentrate regulating valve (17) are turned down, if close if the variable of densitometer (15) is lower than setting value in 1.1-1.6g/ml
Degree meter (15) variable is higher than setting value, then opens big concentrate regulating valve (17).
6. the sulfur method according to claim 5 with inert carrier circulation, which is characterized in that the solid-liquid mixer
It (23) is Venturi tube (13) or star-like emptier (14).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517548A (en) * | 2020-04-20 | 2020-08-11 | 上海发电设备成套设计研究院有限责任公司 | Desulfurization waste water evaporation concentration system |
| CN112723453A (en) * | 2020-12-23 | 2021-04-30 | 武汉天空蓝环保科技有限公司 | Desulfurization wastewater zero-discharge system for dry slag cooling |
| CN113264564A (en) * | 2021-05-18 | 2021-08-17 | 国能朗新明环保科技有限公司南京分公司 | Wastewater zero discharge system based on high-efficiency concentration and spray drying integrated treatment |
| CN114026046A (en) * | 2019-05-31 | 2022-02-08 | 克拉伦国际有限公司 | Wastewater treatment by evaporation and prevention of dirt with several cleaning particles |
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| CN112723453A (en) * | 2020-12-23 | 2021-04-30 | 武汉天空蓝环保科技有限公司 | Desulfurization wastewater zero-discharge system for dry slag cooling |
| CN112723453B (en) * | 2020-12-23 | 2023-08-04 | 武汉天空蓝环保科技有限公司 | Desulfurization wastewater zero discharge system for dry slag cooling |
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