CN109336202A - Desulfurization wastewater vaporising device and control method - Google Patents
Desulfurization wastewater vaporising device and control method Download PDFInfo
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- CN109336202A CN109336202A CN201811384248.7A CN201811384248A CN109336202A CN 109336202 A CN109336202 A CN 109336202A CN 201811384248 A CN201811384248 A CN 201811384248A CN 109336202 A CN109336202 A CN 109336202A
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- Prior art keywords
- desulfurization wastewater
- atomization
- electric control
- range
- temperature sensor
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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
- C02F1/043—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- 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
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
Abstract
The invention belongs to coal fired thermal power plant technical field of desulfurization, specifically, being related to a kind of desulfurization wastewater vaporising device and control method, desulfurization wastewater vaporising device includes evaporating column, rotary sprayer, waste water electric control valve, range of atomization temperature sensor, dry section temperature sensor and electric control system；The rotary sprayer is mounted on the evaporating column, and the water inlet pipe by being equipped with the waste water electric control valve connects desulfurization wastewater；The range of atomization temperature sensor is mounted in the range of atomization of the evaporating column；The dry section temperature sensor is mounted in the dry section of the evaporating column；The electric control system is electrically connected with the rotary sprayer, the waste water electric control valve, the range of atomization temperature sensor, the dry section temperature sensor respectively.The invention further relates to the control methods of desulfurization wastewater vaporising device.The present invention has the characteristics that fast response time, structure are simple from the inflow and atomizing effect that adjust desulfurization wastewater.
Description
Technical field
The invention belongs to coal fired thermal power plant technical field of desulfurization, specifically, the present invention relates to a kind of evaporations of desulfurization wastewater
Device and control method.
Background technique
Wet desulfurization of flue gas by limestone-gypsum method technique is the flue gas desulfurization technique of state, inside and outside mainstream the most.But due to
The continuous circulation of desulfurization water, causes soluble salt to be constantly concentrated, thus can generate the desulfurization that complicated component, turbidity are high, salinity is high
Waste water has the characteristics that very strong corrosivity and has easy fouling.So partial desulfurization waste water is treated as restriction thermoelectricity
The key factor of factory waste water zero discharge.
Have much for the processing unit of desulfurization wastewater at present, such as application No. is the 201710595961.5, applyings date to be
On July 20th, 2017, invention and created name are a kind of applied to the vaporising device of desulfurization wastewater and the patent application of control method
File, this application file belong to coal-fired station's technical field of desulfurization, are applied to desulfurization wastewater in particular to one kind
Vaporising device, including air preheater, evaporating column, crystal salt recyclable device and electric precipitator, air preheater pass through flue gas
Pipe is connect with evaporating column, and evaporating column is connect with crystal salt recyclable device, and crystal salt recyclable device is connect with electric precipitator, evaporating column
It is inside provided with controllable register, subregion partition, swirl vane and flue gas even distribution plate, the controllable register is set to the flue of evaporating column
Inlet, the subregion partition are set between flue entrance and swirl vane, and atomising device, institute are provided on the evaporating column
State the top that swirl vane is set to atomising device.Meanwhile this application file discloses corresponding control method, for improving waste water
Depuration quality.Although the disclosed vaporising device applied to desulfurization wastewater of this application can be in the evaporation for improving waste water to a certain degree
Quality, but the adjusting being evaporated by way of adjusting flue gas, there are inconvenience, examples in control and in system matches
Such as: the temperature in evaporating column can not instantaneously reach the predetermined value of requirement, but there are certain response phases, and within the response phase
The evaporative mass of desulfurization wastewater is unable to control；The efficiency of combustion of boiler in a short time is stable, thus whithin a period of time
Smoke yields it is relatively stable, and the flue gas air inflow that while adjusting desulfurization wastewater evaporative mass is adjusted certainly will be with other Gas phase Smokes
The exhaust gas volumn of relationship system is related, and there are shifting associations, thus the matching for having aggravated other systems relevant to flue gas is difficult
Degree, there are the deficiencies of system structure complexity.
By being analyzed above it is found that existing desulfurizing waste water processing device has the disadvantage that
1, existing desulfurizing waste water processing device low-response, evaporation of desulfurization wastewater when adjusting desulfurization wastewater evaporative mass
Quality not can guarantee in response duration；
2, existing desulfurizing waste water processing device has aggravated the burden of other relevant matches systems, has aggravated other and flue gas
The complexity of relevant system.
Summary of the invention
The present invention provides a kind of desulfurization wastewater vaporising device and control methods, are able to solve desulfurization wastewater in the prior art
The technical issues of processing unit low-response, additionally it is possible to solve desulfurizing waste water processing device in the prior art and aggravate other systems complexity
The technical issues of property.
To solve the above-mentioned problems, the present invention provides a kind of desulfurization wastewater vaporising device and control method, technical sides
Case is as follows:
A kind of desulfurization wastewater vaporising device comprising: evaporating column, rotary sprayer, waste water electric control valve, range of atomization temperature
Spend sensor, dry section temperature sensor and electric control system；The evaporating column is connected by smoke inlet pipe and is given up for desulfurization
Water evaporation provides the flue gas of heat, and the evaporating column is formed with range of atomization and dry section arranged up and down, and the evaporating column is used for
Evaporating space is provided for desulfurization wastewater, the evaporating column passes through the flue gas after the discharge heat exchange of flue gas escape pipe；The rotating spraying
Device is mounted on the top of the evaporating column, and connects desulfurization wastewater by water inlet pipe, for useless to range of atomization sprinkling desulfurization
Water water mist；The waste water electric control valve is mounted on the water inlet pipe, for adjusting the inflow of desulfurization wastewater；The atomization
Area's temperature sensor is mounted in the range of atomization, for detecting the temperature of the range of atomization；The dry section temperature sensor
It is mounted in the dry section, for detecting the temperature of the dry section；The electric control system respectively with the rotation spray
Day with fog, the waste water electric control valve, the range of atomization temperature sensor, dry section temperature sensor electrical connection, are used for
Operation control is provided.
Such as above-mentioned desulfurization wastewater vaporising device, further preferably are as follows: the evaporating column is divided into cylindrical portion and conus portion, institute
It states cylindrical portion to be located above the conus portion, the range of atomization, the dry section are located in the cylindrical portion, and the conus portion is in
Back taper, for collecting the crystal salt after desulfurization wastewater evaporates.
Such as above-mentioned desulfurization wastewater vaporising device, further preferably are as follows: the conus portion is connected to the flue gas escape pipe,
And it is connected by the flue gas escape pipe with dust-extraction unit；The cylindrical portion is connected to the smoke inlet pipe.
Such as above-mentioned desulfurization wastewater vaporising device, further preferably are as follows: the rotary sprayer includes motor, transmission dress
It sets, atomizing disk and frequency converter；The motor is connected with the transmission device；The transmission device is connected with the atomizing disk；
The frequency converter is connected with the motor.
Such as above-mentioned desulfurization wastewater vaporising device, further preferably are as follows: the transmission device is speed increasing gear group.
Such as above-mentioned desulfurization wastewater vaporising device, further preferably are as follows: the electric control system is DCS system, that is, is divided
Cloth control system, for according to the range of atomization temperature sensor of acquisition inductive signal and the dry section temperature sensing
The aperture of the revolving speed of rotary sprayer described in the actuated signal control of device and the waste water electric control valve.
Such as above-mentioned desulfurization wastewater vaporising device, further preferably are as follows: it further include air preheater, the air preheater
It is connected with the smoke inlet pipe, for conveying flue gas to the evaporating column.
Such as above-mentioned desulfurization wastewater vaporising device, further preferably are as follows: further include waste water storing apparatus, the waste water accommodates
Device includes storage pool and surge tank；The storage pool is connected to the surge tank, and the surge tank is simultaneously electronic with the waste water
Regulating valve is connected to by the water inlet pipe.
Such as above-mentioned desulfurization wastewater vaporising device, further preferably are as follows: further include air distribution plate, the air distribution plate is mounted on institute
It states in evaporating column, and is connected with the smoke inlet pipe, for the uniformly distributed high-temperature flue gas from the smoke inlet pipe.
A kind of control method of desulfurization wastewater vaporising device, comprising: compare the default temperature of atomization of the electric control system
The atomization actual temperature of degree and the range of atomization of range of atomization temperature sensor detection, if atomization actual temperature is greater than atomization
Preset temperature then accelerates the revolving speed of the rotary sprayer, if atomization actual temperature, which is less than, is atomized preset temperature, described in reduction
The revolving speed of rotary sprayer；The drying preset temperature and the dry section temperature sensor for comparing the electric control system detect
The drying actual temperature of the dry section it is electronic to increase the waste water if dry actual temperature is greater than dry preset temperature
The aperture of regulating valve turns the aperture of the waste water electric control valve down if dry actual temperature is less than dry preset temperature.
Analysis it is found that compared with prior art, the advantages and beneficial effects of the present invention are:
1, the present invention to adjust the water of desulfurization wastewater, atomization quality sets out, catch direct to desulfurization wastewater evaporation effect
This key point of the rotary sprayer having an impact, and a series of matched designs are carried out, it can directly improve desulfurization wastewater processing
Effect.Since desulfurization wastewater is lower in thermal power plant and other system relationships, and desulfurization wastewater can separate storage, the present invention
From desulfurization wastewater is adjusted, the stability of the other systems of thermal power plant will not influence, because without aggravating other matching systems
Complexity；Meanwhile the present invention can adjust the steaming of desulfurization wastewater from the flow and atomizing effect that adjust desulfurization wastewater immediately
Send out effect, fast response time, and can real-time dynamic regulation, can guarantee the evaporative mass of desulfurization wastewater, have response speed
The feature that degree is fast, structure is simple.
2, evaporating column of the invention is divided into cylindrical portion and conus portion, and cylindrical portion is used for the evaporation for desulfurization wastewater, drying mentions
For processing space, the desulfurization wastewater after capable of guaranteeing all directions atomization is uniformly evaporated, dries, while providing larger process space；
Conus portion is in back taper, and is connected to flue gas escape pipe, and flue gas, vapor and partially crystallizable salt particle are via flue gas escape pipe
Conus portion can play buffering, crown_interception to crystal salt when discharge, so as to mitigate the burden of external dust-extraction unit, also
Convenient for collecting the crystal salt of desulfurization wastewater, thus has the characteristics that desulfurization wastewater high treating effect.
3, the present invention adjusts the frequency of supply of motor by frequency converter, to adjust the rotation speed of motor, then
The revolving speed for adjusting the atomizing disk being connected by transmission device with motor achievees the purpose that adjust atomizing effect have atomization effect
The characteristics of fruit is convenient for adjusting.
4, electric control system of the invention uses DCS system, by matched design, so that rotary sprayer and range of atomization
Temperature sensor interlocking, the interlocking of waste water electric control valve interlock with dry section temperature sensor, have the characteristics that convenient for control.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of desulfurization wastewater vaporising device of the invention.
In figure: 1- rotary sprayer；The range of atomization 2- temperature sensor；The range of atomization 3-；4- dry section；5- flue gas escape pipe；
6- conus portion；7- dry section temperature sensor；8- cylindrical portion；9- smoke inlet pipe；10- waste water electric control valve；11- buffering
Tank；12- storage pool；13- air preheater.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.Term used in the present invention " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figure 1, the present invention provides a kind of desulfurization wastewater vaporising devices, it mainly include evaporating column, rotary sprayer
1, waste water electric control valve 10, range of atomization temperature sensor 2, dry section temperature sensor 7 and electric control system；Evaporating column is logical
Crossing smoke inlet pipe 9 and connecting is that desulfurization wastewater evaporates and provides the flue gas of heat (flue gas is boiler tail high-temperature flue gas, and temperature exists
130 DEG C or so), evaporating column includes range of atomization 3 and (the dotted line signal theory in Fig. 1 between range of atomization 3 and dry section 4 of dry section 4
On division, and not practical structures), dry section 4 is located at the lower section of range of atomization 3, and evaporating column is used to provide steaming for desulfurization wastewater
Space is sent out, evaporating column passes through the flue gas after the discharge heat exchange of flue gas escape pipe 5；Rotary sprayer 1 is mounted on the top of evaporating column, and
Desulfurization wastewater is connected by water inlet pipe, for spraying desulfurization wastewater water mist to range of atomization 3；Waste water electric control valve 10 be mounted on into
On water pipe, for adjusting the inflow of desulfurization wastewater；Range of atomization temperature sensor 2 is mounted in range of atomization 3 (range of atomization temperature biography
2 main body of sensor is located at outside evaporating column, and probe is placed in range of atomization 3), for detecting the temperature of range of atomization 3；Dry section temperature passes
Sensor 7 is mounted in dry section 4 (7 main body of dry section temperature sensor is located at outside evaporating column, and probe is placed in dry section 4),
For detecting the temperature of dry section 4；Electric control system respectively with rotary sprayer 1, waste water electric control valve 10, range of atomization temperature
Sensor 2, the electrical connection of dry section temperature sensor 7 are spent, for providing operation control.
Specifically, the present invention is to adjust the water of desulfurization wastewater, atomization quality sets out, catches to evaporate desulfurization wastewater and imitate
Rotary sprayer 1 this key point that fruit directly has an impact, and a series of matched designs are carried out, it is useless can directly to improve desulfurization
Water treatment efficiency.Rotary sprayer 1 is mounted on the top of evaporating column, and is coaxially arranged with evaporating column, with rotary sprayer 1
Spraying place is located at the range of atomization 3 that same level region is evaporating column, for detecting the range of atomization temperature sensing of 3 temperature of range of atomization
Device 2 is set as multiple, is evenly arranged on the inner wall of evaporating column；It is dry section 4 below range of atomization 3, for detecting 4 temperature of dry section
Dry section temperature sensor 7 is set as multiple, is equally evenly arranged on the inner wall of evaporating column；Rotary sprayer 1 is connect by water inlet pipe
Lead to desulfurization wastewater, waste water electric control valve 10 is installed on water inlet pipe；Electric control system respectively with rotary sprayer 1, waste water
Electric control valve 10, range of atomization temperature sensor 2, dry section temperature sensor 7 be electrically connected, thus realize rotary sprayer 1 with
The interlocking of range of atomization temperature sensor 2 (dotted line in Fig. 1 between rotary sprayer 1 and range of atomization temperature sensor 2 indicates interlocking),
Waste water electric control valve 10 interlocking with dry section temperature sensor 7 interlocking (in Fig. 1 waste water electric control valve 10 interlocking and dry section
Dotted line between temperature sensor 7 indicates interlocking).Rotary sprayer 1 is controlled by the testing result of range of atomization temperature sensor 2
Revolving speed waste water electric control valve 10 is controlled by the testing result of dry section temperature sensor 7 to control atomization quality
Aperture, to control desulfurization wastewater inflow.High-temperature flue gas is connected by smoke inlet pipe 9 at the top of evaporating column, high-temperature flue gas exists
It is from top to bottom flowed in evaporating column, so that evaporation, the drying to the desulfurization wastewater being atomized via rotary sprayer 1 are completed, thus
Desulfurization wastewater is handled as vapor and crystal salt two parts, vapor is discharged in company with flue gas by evaporation tower bottom, and crystal salt is fallen
Enter external crystal salt processing unit to be handled.Since desulfurization wastewater is lower in thermal power plant and other system relationships, and
Desulfurization wastewater can separate storage, the present invention from adjust desulfurization wastewater, will not influence the stability of the other systems of thermal power plant,
Because of the complexity without aggravating other matching systems；Meanwhile the present invention goes out from the flow and atomizing effect for adjusting desulfurization wastewater
Hair, can adjust the evaporation effect of desulfurization wastewater immediately, fast response time, and can real-time dynamic regulation, can guarantee to take off
The evaporative mass of sulphur waste water has the characteristics that fast response time, structure are simple.
In order to improve the present invention to the treatment effect of desulfurization wastewater, and convenient for collecting the crystal salt of desulfurization wastewater, such as Fig. 1 institute
Show, evaporating column of the invention is divided into cylindrical portion 8 and conus portion 6, and cylindrical portion 8 is located at 6 top of conus portion, range of atomization 3, dry section 4
In cylindrical portion 8, conus portion 6 is in back taper, for collecting the crystal salt after desulfurization wastewater evaporates.Evaporating column of the invention
Cylindrical portion 8 is used for the evaporation for desulfurization wastewater, drying provides processing space, and setting cylindrical structure can guarantee that all directions are atomized
Desulfurization wastewater afterwards is uniformly evaporated, dries, while providing larger process space, improves the treatment effect to desulfurization wastewater；This hair
The conus portion 6 of bright evaporating column is in back taper, is also convenient for collecting the crystal salt of desulfurization wastewater, thus has high treating effect, just
In collect crystal salt the characteristics of.
Flue gas is discharged for the ease of evaporating column, as shown in Figure 1, conus portion 6 of the invention is connected to flue gas escape pipe 5, and
It is connected by flue gas escape pipe 5 with dust-extraction unit, the conventional dust removals means such as bag-type dust can be selected in dust-extraction unit, select as needed
With, not in protection scope of the present invention, therefore not detailed description.Meanwhile cylindrical portion 8 of the invention and smoke inlet pipe 9
Connection.The present invention connects flue gas escape pipe 5 by the conus portion 6 of evaporating column, and flue gas, vapor and partially crystallizable salt particle are passing through
Conus portion 6 can play buffering, crown_interception to crystal salt when being discharged by flue gas escape pipe 5, to mitigate external dedusting dress
The burden set has the characteristics that convenient for exhaust.
For the ease of adjusting atomizing effect of the invention, as shown in Figure 1, rotary sprayer 1 of the invention include motor,
Transmission device, atomizing disk and frequency converter；Motor is connected with transmission device；Transmission device is connected with atomizing disk；Frequency converter and electricity
Motivation is connected, and is also connected with electric control system.The revolving speed of atomizing disk is associated with atomizing effect, the water droplet that revolving speed is then atomized fastly
Particle is small, and atomizing effect is good.The present invention adjusts the frequency of supply of motor by frequency converter, to adjust the rotation speed of motor
Degree then adjusts the revolving speed for the atomizing disk being connected by transmission device with motor, achievees the purpose that adjust atomizing effect, have
The characteristics of atomizing effect is convenient for adjusting.
In order to simplify structural volume of the invention, as shown in Figure 1, transmission device of the invention is speed increasing gear group.This hair
Feature that is bright that speedup purpose is reached using gear structure, having transmission accurate, compact-sized.
In order to make the present invention convenient for control, as shown in Figure 1, electric control system of the invention is DCS system, i.e., it is distributed
Control system, by matched design, for being passed according to the inductive signal and dry section temperature of the range of atomization temperature sensor 2 of acquisition
The revolving speed of the actuated signal control rotary sprayer 1 of sensor 7 and the aperture of waste water electric control valve 10, so that rotary sprayer 1
It is interlocked with range of atomization temperature sensor 2, the interlocking of waste water electric control valve 10 is interlocked with dry section temperature sensor 7, is had and is convenient for
The characteristics of control.
In order to energy-saving, as shown in Figure 1, the invention also includes air preheater 13, air preheater 13 and flue gas into
Tracheae 9 is connected, for conveying high-temperature flue gas to evaporating column.Specifically, boiler tail of the present invention from air preheater outlet end
Flue fetching portion high-temperature flue gas is used as evaporation desulfurization wastewater.The present invention uses the part of the air preheater from boiler
High-temperature flue gas handles desulfurization wastewater, can not only make full use of residual heat from boiler fume, moreover it is possible to reduce blowdown and (reduce desulfurization wastewater
Discharge), thus have the characteristics that energy saving.
In order to make the present invention convenient for processing desulfurization wastewater, as shown in Figure 1, the invention also includes waste water storing apparatus, waste water
Storing apparatus includes storage pool 12 and surge tank 11；Storage pool 12 is connected to surge tank 11, surge tank 11 and with waste water electric adjustable
Valve 10 is saved to be connected to by water inlet pipe.The present invention, being capable of Corresponding matching response waste water motorized adjustment by setting waste water storing apparatus
Adjusting of the valve 10 to desulfurization wastewater flow, enables the other systems of the present invention and thermal power plant relatively independent, i.e., of the invention
Adjusting will not impact other systems, so that the present invention has the characteristics that convenient for processing desulfurization wastewater.
In order to improve treatment effeciency of the invention, as shown in Figure 1, air distribution plate is mounted on steaming the invention also includes air distribution plate
Fa Tanei, and be connected with smoke inlet pipe 9, for being distributed the high-temperature flue gas from smoke inlet pipe 9.Air distribution plate is integrally conical
Setting, and multiple circular holes are offered, for uniformly exporting the high-temperature flue gas from smoke inlet pipe 9 to range of atomization 3.The present invention
By installing air distribution plate, dispersed placement high-temperature flue gas can have to improve the treatment effeciency of desulfurization wastewater in evaporating column
The high feature for the treatment of effeciency.
As shown in Figure 1, the present invention also provides a kind of control methods of desulfurization wastewater vaporising device, comprising: comparison is electrical
The atomization actual temperature for the range of atomization 3 that the atomization preset temperature and range of atomization temperature sensor 2 of control system detect, if atomization is real
Border temperature is greater than atomization preset temperature, then spins up the revolving speed of sprayer 1, if atomization actual temperature is less than the default temperature of atomization
Degree, then reduce the revolving speed of rotary sprayer 1；Compare the drying preset temperature and dry section temperature sensor 7 of electric control system
The drying actual temperature of the dry section 4 of detection increases waste water motorized adjustment if dry actual temperature is greater than dry preset temperature
The aperture of valve 10 turns the aperture of waste water electric control valve 10 down if dry actual temperature is less than dry preset temperature.
Specifically, control method of the invention includes the analysis and control to following nine kinds of situations:
One, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization is higher than the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section is higher than the preset value of electric control system, then rotary sprayer at this time
1 atomizing effect is bad, and the water droplets of desulfurization wastewater are bigger than normal, while the aperture of waste water electric control valve 10 is less than normal, and desulfurization is useless
The inflow of water is insufficient.The rotary sprayer 1 of electric control system control at this time revs up, and improves atomizing effect, increases simultaneously
The aperture of waste water electric control valve 10 increases the inflow of desulfurization wastewater, if 4 temperature of dry section and range of atomization 3 after overregulating
Temperature is still higher than electric control system preset value, then electric control system is alarmed at this time, need to shut down reduction, checks that desulfurization is useless
Whether water blocks, and whether waste water electric control valve 10 damages.
Two, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization is higher than the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section is lower than the preset value of electric control system, then rotary sprayer at this time
1 atomizing effect is bad, and the water droplets of desulfurization wastewater are bigger than normal, while the aperture of waste water electric control valve 10 is excessive, and desulfurization is useless
The inflow of water is excessively big.The waste water electric control valve 10 of electric control system control at this time reduces aperture, reduces desulfurization wastewater
Inflow, while the revolving speed of sprayer 1 is spun up, improve atomizing effect.
Three, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization is higher than the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section meets the preset value of electric control system, then rotary sprayer at this time
1 atomizing effect is bad, and the water droplets of desulfurization wastewater are bigger than normal, while the aperture of waste water electric control valve 10 may slightly partially
Greatly, the inflow of desulfurization wastewater may be higher.The rotary sprayer 1 of electric control system control at this time revs up, and improves atomization
Effect, while according to the aperture of the real-time detection result of dry section temperature sensor 7 reduction waste water electric control valve 10, reduce de-
The inflow of sulphur waste water.
Four, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization meets the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section is higher than the preset value of electric control system, then rotary sprayer at this time
1 water droplets are less than normal, while the aperture of waste water electric control valve 10 is less than normal, and the inflow of desulfurization wastewater is relatively low.It is electrical at this time
Control system control rotary sprayer 1 slows down revolving speed, while increasing the aperture of waste water electric control valve 10, increases desulfurization wastewater
Inflow.
Five, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization meets the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section is lower than the preset value of electric control system, then rotary sprayer at this time
1 atomizing effect is bad, and the water droplets of desulfurization wastewater are bigger than normal, while the aperture of waste water electric control valve 10 is excessive, and desulfurization is useless
The inflow of water is excessively high.At this time electric control system control waste water electric control valve 10 reduce aperture, reduce desulfurization wastewater into
Water, while the revolving speed of sprayer 1 is spun up, improve atomizing effect.
Six, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization meets the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section meets the preset value of electric control system, then rotary sprayer at this time
1 atomizing effect and the aperture of waste water electric control valve 10 are all satisfied the preset value of electric control system.
Seven, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization is lower than the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section is higher than the preset value of electric control system, then rotary sprayer at this time
1 water droplets are too small, while the aperture of waste water electric control valve 10 is less than normal, and the inflow of desulfurization wastewater is less than normal.It is electrical at this time
Control system controls rotary sprayer 1 and reduces revolving speed, while being increased and being given up according to the real-time detection result of dry section temperature sensor 7
The aperture of water electric control valve 10 increases the inflow of desulfurization wastewater.
Eight, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization is lower than the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section is lower than the preset value of electric control system, then rotary sprayer at this time
1 atomizing effect effect is bad, and the water droplets of desulfurization wastewater are excessive, while the aperture of waste water electric control valve 10 is excessive, this
When desulfurization wastewater may flow directly into tower bottom without atomization in evaporating column, electric control system alarm needs maintenance down, checks
Whether rotary sprayer 1 has damaged.
Nine, when range of atomization temperature sensor 2 detects that 3 temperature of range of atomization is lower than the preset value of electric control system, if this
When dry section temperature sensor 7 detect that 4 temperature of dry section meets the preset value of electric control system, then rotary sprayer at this time
1 water droplets are too small.The rotary sprayer 1 of electric control system control at this time reduces revolving speed, while being passed according to dry section temperature
The real-time detection result of sensor 7 adjusts the aperture of waste water electric control valve 10.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. a kind of desulfurization wastewater vaporising device characterized by comprising
Evaporating column, rotary sprayer, waste water electric control valve, range of atomization temperature sensor, dry section temperature sensor and electrical
Control system；
The evaporating column is connected by smoke inlet pipe and provides the flue gas of heat for desulfurization wastewater evaporation, and the evaporating column is formed with
Range of atomization and dry section arranged up and down, for providing evaporating space for desulfurization wastewater, the evaporating column passes through flue gas escape pipe
Flue gas after discharge heat exchange；
The rotary sprayer is mounted on the top of the evaporating column, and connects desulfurization wastewater by water inlet pipe, is used for described
Spray desulfurization wastewater water mist in range of atomization；
The waste water electric control valve is mounted on the water inlet pipe, for adjusting the inflow of desulfurization wastewater；
The range of atomization temperature sensor is mounted in the range of atomization, for detecting the temperature of the range of atomization；
The dry section temperature sensor is mounted in the dry section, for detecting the temperature of the dry section；
The electric control system is passed with the rotary sprayer, the waste water electric control valve, the range of atomization temperature respectively
Sensor, dry section temperature sensor electrical connection, for providing operation control.
2. desulfurization wastewater vaporising device according to claim 1, it is characterised in that:
The evaporating column is divided into cylindrical portion and conus portion, and the cylindrical portion is located above the conus portion, the range of atomization, described
Dry section is located in the cylindrical portion, and the conus portion is in back taper, for collecting the crystal salt after desulfurization wastewater evaporates.
3. desulfurization wastewater vaporising device according to claim 2, it is characterised in that:
The conus portion is connected to the flue gas escape pipe, and is connected by the flue gas escape pipe with dust-extraction unit；
The cylindrical portion is connected to the smoke inlet pipe.
4. desulfurization wastewater vaporising device according to claim 1, it is characterised in that:
The rotary sprayer includes motor, transmission device, atomizing disk and frequency converter；The motor and the transmission device
It is connected；The transmission device is connected with the atomizing disk；The frequency converter is connected with the motor.
5. desulfurization wastewater vaporising device according to claim 4, it is characterised in that:
The transmission device is speed increasing gear group.
6. desulfurization wastewater vaporising device according to claim 1, it is characterised in that:
The electric control system is DCS system, for according to the inductive signal of the range of atomization temperature sensor of acquisition and
The revolving speed of rotary sprayer described in the actuated signal control of the dry section temperature sensor and the waste water electric control valve
Aperture.
7. desulfurization wastewater vaporising device according to claim 1, which is characterized in that further include:
Air preheater, the air preheater are connected with the smoke inlet pipe, for conveying flue gas to the evaporating column.
8. desulfurization wastewater vaporising device according to claim 1, which is characterized in that further include:
Waste water storing apparatus, the waste water storing apparatus includes storage pool and surge tank；The storage pool and the surge tank connect
Logical, the surge tank is simultaneously connected to the waste water electric control valve by the water inlet pipe.
9. desulfurization wastewater vaporising device according to claim 1, which is characterized in that further include:
Air distribution plate, the air distribution plate are mounted in the evaporating column, and are connected with the fume pipe, for uniformly coming from the cigarette
The flue gas of gas air inlet pipe.
10. according to claim 1 to the control method of desulfurization wastewater vaporising device described in 9 any one, it is characterised in that:
Compare the atomization preset temperature of the electric control system and the range of atomization of range of atomization temperature sensor detection
Atomization actual temperature, if atomization actual temperature be greater than atomization preset temperature, accelerate the revolving speed of the rotary sprayer, if mist
Change actual temperature and be less than atomization preset temperature, then reduces the revolving speed of the rotary sprayer；
Compare the drying preset temperature of the electric control system and the dry section of dry section temperature sensor detection
Drying actual temperature increase the aperture of the waste water electric control valve if dry actual temperature is greater than dry preset temperature,
If dry actual temperature is less than dry preset temperature, the aperture of the waste water electric control valve is turned down.
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| CN201811384248.7A CN109336202A (en) | 2018-11-20 | 2018-11-20 | Desulfurization wastewater vaporising device and control method |
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| CN201811384248.7A CN109336202A (en) | 2018-11-20 | 2018-11-20 | Desulfurization wastewater vaporising device and control method |
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| CN116514206A (en) * | 2023-05-22 | 2023-08-01 | 江苏彬鹏环保有限公司 | Treatment device for concentrating desulfurization wastewater by coupling evaporation of flue gas waste heat of power plant |
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