CN210001617U - waste water atomizing nozzle for thermal power plant - Google Patents
waste water atomizing nozzle for thermal power plant Download PDFInfo
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- CN210001617U CN210001617U CN201920198427.5U CN201920198427U CN210001617U CN 210001617 U CN210001617 U CN 210001617U CN 201920198427 U CN201920198427 U CN 201920198427U CN 210001617 U CN210001617 U CN 210001617U
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Abstract
The utility model provides an kind of thermal power plant's waste water atomizing nozzle, introduce piece and working medium including concentrated waste water, concentrated waste water is introduced the piece and is equipped with concentrated waste water and introduces the mouth, working medium is introduced and is equipped with the working medium and introduces the mouth, the working medium is introduced the piece and is established the outside that concentrated waste water introduced the piece, concentrated waste water introduce the piece with the exit end of working medium introduction piece forms out the fog mouth jointly kind of thermal power plant's waste water atomizing nozzle, working medium such as usable high temperature flue gas atomizes, not only effectively prevents the jam of nozzle and realizes concentrated waste water atomized particle minor diameter, realizes the zero release of thermal power plant's waste water such as desulfurization waste water, provides solution for thermal power plant energy saving and emission reduction simultaneously.
Description
Technical Field
The utility model relates to a waste water treatment technical field of thermal power plant, in particular to kinds of waste water atomizing nozzles of thermal power plant.
Background
However, various waste water can be generated in the operation of a coal-fired power plant, and mainly comprises desulfurization waste water, circulating cooling system sewage, acid-base waste water, domestic sewage and the like, wherein the desulfurization waste water is which is the most difficult to treat waste water of the coal-fired power plant due to complex components and multiple pollutant types.
Domestic patent 201810863682.7 discloses terminal high salt waste water zero release processing system of thermal power plant, spouts the waste water after the concentration into air heater import flue or export flue through the shower head and carries out the flash distillation, but is like the shower head hardly realize the atomizing of waste water spray liquid drop, because flue length is limited, hardly realizes the complete evaporation of concentrated waste water, causes the flue gas humidity that gets into the electrostatic precipitator too big, influences the dust removal effect of electrostatic precipitator.
Domestic patent 201711495164.6 discloses low energy consumption anti-blocking type atomizing injection device, and inside the device set up the inside nozzle holder and be equipped with the double fluid nozzle, utilize two runners of liquid and gas and atomizing mixing chamber exit end to be equipped with the nozzle sleeve head, realize the best atomization effect of liquid.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the invention provides thermal power plant wastewater atomizing nozzle devices, which can effectively prevent nozzles from being blocked, ensure that sprayed liquid drops are completely dried in a flue, and have simple assembly and convenient machining.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
kind of thermal power plant's waste water atomizing nozzle, including concentrated waste water introduction member and working medium introduction member, concentrated waste water introduction member is equipped with concentrated waste water introduction port, be equipped with working medium introduction port on the working medium introduction member, the working medium introduction member cover is established the outside of concentrated waste water introduction member, concentrated waste water introduction member with the exit end of working medium introduction member forms out the fog mouth jointly.
, the concentrated wastewater inlet is located on the central axis of the wastewater atomization nozzle, and the working medium inlet (411e) is inclined or vertical.
, the included angle between the working medium inlet and the central axis of the waste water atomizing nozzle is 15-90 degrees.
And , the working medium of the working medium introducing port comprises at least of high-temperature flue gas, high-temperature steam and compressed air.
And , introducing the high-temperature steam into any of main steam, high-pressure cylinder steam extraction, high-pressure cylinder steam exhaust, reheating hot section steam extraction, intermediate pressure cylinder steam extraction and intermediate pressure cylinder steam exhaust of the thermal power plant.
, the high-temperature flue gas is introduced from any positions behind the coal-fired boiler or the denitration device or the air preheater.
, any of temperature sensor, pressure sensor or flow sensor are arranged at the working medium introducing port.
, the working medium inlet is provided with a flow control valve to control the flow of the working medium entering the mixing chamber.
kinds of waste water atomizing devices of thermal power plants, the waste water atomizing device contains at least 2 arrays of the waste water atomizing nozzles.
, the atomizing device is installed at any position in front of or behind the air preheater in the back flue of the boiler.
Compared with the prior art, kinds of waste water atomizing nozzle of thermal power plant have following advantage:
(1) the utility model discloses utilize boiler flue gas, steam extraction high temperature steam waste heat, when realizing waste water atomization evaporation, can prevent effectively that the material from blockking up the emergence of nozzle.
(2) The utility model discloses utilize simple structure's gas-liquid mixture nozzle device, realize concentrated waste water atomized particle minor diameter, guarantee that concentrated waste water gets into the complete evaporation before the electrostatic precipitator in the flue.
(3) The utility model discloses can realize the zero release of thermal power plant's waste water such as desulfurization waste water, provide the solution for thermal power plant's energy saving and emission reduction.
Drawings
The accompanying drawings, which form part of the present invention, are provided to provide an understanding of the present invention with respect to step , the exemplary embodiments and descriptions thereof are provided to explain the present invention and not to constitute an undue limitation on the invention, in the accompanying drawings:
FIG. 1 is a system schematic of a thermal power plant wastewater treatment system;
FIG. 2 is a schematic view of a wastewater atomization plant in a thermal power plant wastewater treatment system;
FIG. 3 is a schematic structural diagram of types of wastewater atomizing nozzles of a wastewater treatment system of a thermal power plant;
FIG. 4 is a schematic diagram of another types of wastewater atomizing nozzles of the thermal power plant wastewater treatment system;
FIG. 5 is a schematic structural diagram of another kinds of wastewater atomizing nozzles of the wastewater treatment system of the thermal power plant;
FIG. 6 is a graph of particle size of atomized droplets versus evaporation time;
FIG. 7 is a schematic view of an included angle (15-90 degrees) between the incident angle of the high-temperature flue gas inlet and the working medium inlet and the central axis of the atomizing and mixing chamber.
Description of reference numerals:
a flue gas generating device-1; a coal-fired boiler-11; denitration equipment-12; an air preheater-13; a wastewater collection header-2; a wastewater concentration and reduction device-3; a waste water flue evaporation module-311; a waste water high-temperature steam evaporation module-312; MVR evaporation module-313; a wastewater atomization and evaporation device-4; a wastewater atomization device-41; a wastewater atomization nozzle-411; a concentrated wastewater inlet-411 a; a high-temperature flue gas introduction port-411 b; atomizing and mixing chamber-411 c; a mist outlet-411 d; working medium introducing port-411 e; a nozzle-411 f, a working medium inlet pipe-411 g, a concentrated wastewater inlet pipe-42 and a high-temperature flue gas inlet pipe-43; a concentrated wastewater inlet-44; a working medium introducing part-45; a high temperature flue gas inlet-46; an electric dust collector-5; a desulfurizing tower-7.
Detailed Description
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The utility model discloses a core is that kinds of thermal power plant's waste water atomizing nozzle are provided, and working medium such as the usable high temperature flue gas of this nozzle atomizes, not only effectively prevents the jam of nozzle and realizes concentrated waste water atomized particles minor diameter, realizes the zero release of thermal power plant's waste water such as desulfurization waste water, provides the solution for thermal power plant's energy saving and emission reduction simultaneously, and it is right below will through the embodiment the utility model discloses carry out detailed description.
Example 1
kinds of thermal power plant effluent disposal system, as shown in fig. 1, including flue gas production device 1, waste water collection header 2, the concentrated decrement device 3 of waste water, waste water atomization evaporation plant 4 and electrostatic precipitator 5, desulfurizing tower 7, waste water collection header 2 is connected with the concentrated decrement device 3 of waste water for waste water in the waste water collection header 2 lets in the concentrated decrement device 3 of waste water, the concentrated decrement device 3 of waste water and flue gas production device 1 are connected with waste water atomization evaporation plant 4 respectively, thereby make the partial flue gas that flue gas production device 1 produced and enter into waste water atomization evaporation plant 4 from the concentrated decrement waste water of the concentrated decrement device 3 output of waste water, waste water atomization evaporation plant 4 is connected with electrostatic precipitator 5, end of electrostatic precipitator 5 links to each other with desulfurizing tower 7.
Specifically, the flue gas generating device 1 comprises a coal-fired boiler 11, a denitration device 12 and an air preheater 13, wherein the coal-fired boiler 11, the denitration device 12 and the air preheater 13 are sequentially connected, and the air preheater 13 is connected with the wastewater atomization and evaporation device 4. The coal-fired boiler 11 is internally fired with coal to generate flue gas, and the flue gas is subjected to denitration by the denitration device 12, then preheated in the air preheater 13, and then introduced into the wastewater atomization and evaporation device 4.
The wastewater collection header 2 is used for collecting desulfurization wastewater generated by the desulfurization tower 7 and also can collect industrial wastewater generated in other thermal power plants according to conditions. In the wastewater collection header 2, a water quantity sensor, a temperature sensor and a water pressure sensor are provided, which are respectively used for detecting the water quantity, temperature and pressure of wastewater.
The wastewater concentration and reduction device 3 comprises at least types of wastewater flue evaporation modules 311, wastewater high-temperature steam evaporation modules 312 and MVR evaporation modules 313, wherein conduction valves are arranged among the wastewater flue evaporation modules 311, the wastewater high-temperature steam evaporation modules 312 and the MVR evaporation modules 313, types of the 3 types of wastewater concentration and reduction modules are selected for concentration and reduction operation according to the water quantity, temperature and pressure of wastewater in the wastewater collection header 2,
if the waste water flue evaporation module 311 is adopted, high-temperature flue gas generated by a thermal power plant is adopted as a heating heat source;
if the waste water high-temperature steam evaporation module 312 is adopted, steam with proper pressure, temperature and flow is selected as a heating heat source according to the condition of a steam extraction system of the power plant;
if the waste water MVR evaporation module 313 is adopted, electric energy and high-temperature steam are adopted as heating heat sources;
waste water carries out decrement concentration through stating waste water concentration decrement device 3 after, the gas component that the evaporation produced passes through the gas-water separator, and the gas after the separation gets into desulfurizing tower 7 and handles the back and discharges, and steam or water will according to its temperature, pressure, component steam recovery selectivity gets into in collection vapour header, oxygen-eliminating device, condenser, industrial water tank or other thermodynamic system entry, and the waste water after the concentration decrement passes through water pump to waste water atomizing evaporation plant 4.
If other wastewater concentration and reduction processes are adopted, the wastewater is sent to other wastewater concentration and reduction modules, such as a sedimentation tank, a chemical precipitation combined filter-pressing filtration process, or a natural evaporation tank, and the wastewater after concentration and reduction is pumped to the wastewater atomization and evaporation device 4.
The waste water atomization and evaporation device 4 comprises a waste water atomization device 41, a concentrated waste water inlet pipe 42, a high-temperature flue gas inlet pipe 43 and a working medium inlet pipe 411g, wherein the waste water atomization device 41 is installed in a flue of the waste water atomization and evaporation device 4, the waste water atomization device 41 is composed of a plurality of waste water atomization nozzles 411 which are arranged at intervals, as shown in fig. 2, the waste water atomization nozzles 411 are any of the 3 waste water atomization nozzles shown in fig. 3, fig. 4 and fig. 5, a valve and a sensor are arranged on the waste water atomization nozzles 411, and the sensor comprises at least of a flow sensor, a pressure sensor and a temperature sensor.
The wastewater atomization and evaporation device 4 utilizes part of high-temperature flue gas heat output by the flue gas generation device 1 to atomize concentrated and reduced wastewater at high temperature, and simultaneously introduces high-temperature steam and compressed air into the wastewater atomization nozzle 411 as required, thereby effectively avoiding the condition that the nozzle is blocked due to the fact that atomized liquid drops are completely dried in the wastewater atomization nozzle 411; meanwhile, the waste water droplets generated by the waste water atomizing nozzle 411 enter the flue to be completely dried, and solid particles are removed through the electric dust collector 5, so that zero discharge of waste water of the thermal power plant is realized.
The thermal power plant wastewater treatment system further comprises a wastewater treatment control module, wherein the wastewater treatment control module comprises a plurality of temperature sensors, a plurality of pressure sensors, a plurality of flow sensors and a control valve , and the flow, pressure, temperature, flow, pressure and temperature of the wastewater reduction concentration device 3, and the pressure, temperature and flow of various working media in the wastewater atomization evaporation device 4 and the wastewater atomization device 41 are controlled through the control valve and the sensors.
Example 2
As shown in fig. 1 and 2, the waste water atomizing and evaporating device 4 comprises a waste water atomizing device 41 installed in a flue, and a concentrated waste water inlet pipe 42, a high temperature flue gas inlet pipe 43 and a working medium inlet pipe 411g connected with the waste water atomizing device 41, the waste water atomizing device 41 is an array formed by arranging a plurality of waste water atomizing nozzles 411 at intervals, the liquid to be atomized mainly comprises the desulfurization waste water of a limestone-gypsum wet method of a power plant and the concentrated waste water of part of the waste water discharged by the power plant after being concentrated by the waste water concentration and reduction device 3, and the atomizing medium adopts at least of high temperature flue gas, high temperature steam and compressed air.
As shown in fig. 3, the waste water atomizing nozzle 411 includes a housing, the inside of the housing is hollow to form an atomizing and mixing chamber 411c, a concentrated waste water inlet 411a, a high temperature flue gas inlet 411b and a working medium inlet 411e are arranged in the atomizing and mixing chamber 411c, the outlet end of the atomizing and mixing chamber 411c is gradually narrowed and provided with a nozzle 411f, the other end of the nozzle 411f is connected with a mist outlet 411d, the end of the mist outlet 411d far away from the nozzle 411f is gradually widened, and any kinds of pressure type atomizing nozzles, rotary type atomizing nozzles, pneumatic atomizing nozzles, ultrasonic or whistle type atomizing nozzles are adopted in the waste water atomizing nozzle 411.
The concentrated wastewater inlet 411a is located on the central axis of the atomizing mixing chamber 411c and connected to the concentrated wastewater inlet pipe 42, and the concentrated wastewater enters the wastewater atomizing nozzle 411 through the concentrated wastewater inlet 411a to be atomized.
The high-temperature flue gas inlet 411b is arranged on the side wall of the atomization mixing chamber 411c and connected with the high-temperature flue gas inlet pipe 43, high-temperature flue gas generated by a boiler of a thermal power plant enters the wastewater atomization nozzle 411 from the high-temperature flue gas inlet pipe 43, the included angle between the incident angle of the high-temperature flue gas and the central axis of the atomization mixing chamber 411c ranges from 15 degrees to 90 degrees, as shown in fig. 7, according to experimental data, a relation curve between the following atomized droplets and the complete evaporation time in a flue can be obtained, as shown in fig. 6, the particle size of the atomized droplets is related to the internal structure of the nozzle, and the incident angle and flow rate of fluid entering the atomization mixing chamber 411c, so that the included angle between the incident angle of the high-temperature flue gas and the working medium entering the wastewater atomization nozzle 411 and the central axis of the atomization mixing chamber 411c is adjusted from 15 degrees to 90 degrees, and the high-temperature flue gas is introduced from any positions behind the denitration equipment 12 of.
, the working medium introducing port 411e is arranged on the side wall of the atomizing mixing chamber 411c and connected with the working medium introducing pipe 411g, high-temperature steam or compressed air generated by a boiler of a thermal power plant enters the wastewater atomizing nozzle 411 from the working medium introducing port 411e through the working medium introducing pipe 411g, the included angle between the incident angle of the working medium and the central axis of the atomizing mixing chamber 411c is 15-90 degrees, as shown in fig. 7, the working medium comprises at least of high-temperature flue gas, high-temperature steam and compressed air, and the high-temperature steam can be introduced from any of main steam, high-pressure cylinder steam extraction, high-pressure cylinder steam exhaust, reheating heat section steam extraction, intermediate pressure cylinder steam extraction and intermediate pressure cylinder steam extraction of the thermal power plant.
, any of temperature sensors, pressure sensors or flow sensors are installed on the working medium introducing port 411e and/or the high-temperature flue gas introducing port 411b, and the sensors are any of resistance type, capacitance type, inductance type, photoelectric type, grating type, thermoelectric type, piezoelectric type, infrared type, optical fiber type, ultrasonic wave type and laser type sensors.
, a flow regulating valve is arranged at the working medium introducing port 411e and/or the high-temperature flue gas introducing port 411b for regulating and controlling the flow of the working medium entering the atomizing and mixing chamber 411 c. preferably, the flow regulating valve is an electromagnetic valve, and the electromagnetic valve is of direct-acting, step-by-step direct-acting and pilot-operated electromagnetic valves.
Waste water that desulfurizing tower 7 produced among the thermal power plant's waste water treatment system is collected in waste water collection header 2, and is concentrated through waste water flue evaporation module 311, and waste water after the concentrated decrement sends into waste water atomizing device 41 of waste water atomizing evaporation module 4 through concentrated waste water inlet tube 42 in the concentrated waste water inlet 411a of waste water atomizing nozzle 411, waste water atomizing nozzle 411 utilizes high temperature flue gas, high temperature steam to realize the zero release of thermal power plant's waste water with the concentrated waste water that atomizes, provides the solution for thermal power plant energy saving and emission reduction. Specifically, the wastewater treatment control system controls the flow of the high-temperature flue gas introduced into the atomizing mixing chamber 411c according to the detected flow of the concentrated wastewater and the detection data of the temperature sensor and the pressure sensor, meanwhile, the steam extracted from the reheating section is used as the working medium entering the atomizing mixing chamber 411c as required, and the flow rate is controlled, on the premise of ensuring that the atomized particles can be completely vaporized and dried in the flue before entering the electric dust collector 5, the total heat brought into the atomizing mixing chamber 411c by the high-temperature steam and the flue gas is less than the total heat required by the complete evaporation and vaporization of the concentrated wastewater, that is, the temperature in the atomizing mixing chamber 411c does not reach the saturation temperature of the concentrated wastewater under the corresponding pressure, thereby preventing the occurrence of the working condition that the nozzle 411f is blocked due to the complete evaporation and vaporization of the concentrated wastewater in the atomizing mixing chamber 411c, and avoiding the occurrence of the phenomenon of smoke scale or insufficient evaporation.
Example 3
Waste water atomizing evaporation plant 4 is including installing waste water atomizing device 41 in the flue and the concentrated waste water inlet tube 42, the working medium inlet tube 411g that are connected with it, waste water atomizing device 41 is by a plurality of arrays of constituteing by waste water atomizing nozzle 411 interval arrangement, installs the optional position before boiler afterbody flue air heater or behind the air heater, treat that the liquid of atomizing is the desulfurization waste water of the limestone-gypsum wet process of power plant and partial power plant discharge waste water concentrated waste water after the waste water concentration decrement module is concentrated, the atomizing medium adopts at least in high temperature flue gas, high temperature steam and the compressed air.
As shown in fig. 4, the waste water atomizing nozzle 411 is composed of a concentrated waste water introducing member 44 and a working medium introducing member 45, the concentrated waste water introducing member 44 is cylindrical, a concentrated waste water introducing port 411a is formed at an end , a working medium introducing port 411e is formed on the working medium introducing member 45, the working medium introducing member 45 is sleeved on the outer side of the concentrated waste water introducing member 44, and a mist outlet 411d is formed by the concentrated waste water introducing member 44 and an outlet end of the working medium introducing member 45.
The concentrated wastewater inlet 411a is located on the central axis of the wastewater atomization nozzle 411 and connected to the concentrated wastewater inlet pipe 42, and concentrated wastewater enters the wastewater atomization nozzle 411 through the concentrated wastewater inlet 411a to be atomized.
The working medium introducing port 411e is connected with a working medium introducing pipe 411g, an included angle between an incident angle of the working medium and a central axis of the atomizing mixing chamber 411c is 15-90 degrees, as shown in fig. 7, the working medium comprises at least kinds of high-temperature flue gas, high-temperature steam and compressed air, the high-temperature steam is introduced from any kinds of main steam, high-pressure cylinder steam extraction, high-pressure cylinder steam exhaust, reheating section steam extraction, intermediate cylinder steam extraction and intermediate cylinder steam extraction of a thermal power plant, and the high-temperature flue gas is introduced from any positions behind a denitration device 12 of a coal-fired boiler 11 or in front of an air preheater 13 or behind the air preheater 13.
The working medium introducing port 411e is provided with temperature sensors, pressure sensors or flow sensors, wherein the sensors are resistance type, capacitance type, inductance type, photoelectric type, grating type, thermoelectric type, piezoelectric type, infrared type, optical fiber, ultrasonic wave and laser sensor.
, the working medium inlet 411e is provided with a flow regulating valve for regulating and controlling the flow of the working medium entering the atomizing and mixing chamber 411 c. preferably, the flow regulating valve is an electromagnetic valve, and the electromagnetic valve is any of direct-acting, step-by-step direct-acting and pilot-operated electromagnetic valves.
Industrial wastewater generated in a thermal power plant is collected in a wastewater collection header 2 and concentrated by a wastewater MVR evaporation module 313, the concentrated and reduced wastewater is sent into a concentrated wastewater inlet 411a in a wastewater atomization device 41 of a wastewater atomization evaporation module 4 through a concentrated wastewater inlet 42, at least of high-temperature flue gas, high-pressure cylinder steam extraction and compressed air are introduced into a wastewater atomization nozzle 411 through a working medium inlet 411e to atomize and concentrate the wastewater, so that zero emission of the wastewater in the thermal power plant is realized, and a solution is provided for energy conservation and emission reduction of the thermal power plant.
Example 4
Waste water atomizing and evaporating device 4 is including installing waste water atomizing device 41 in the flue and the concentrated waste water inlet tube 42, high temperature flue gas inlet tube 43 and the working medium inlet tube 411g of being connected with it, waste water atomizing device 41 is by a plurality of arrays of constituteing by waste water atomizing nozzle 411 interval arrangement, installs the optional position before the air heater 13 of boiler afterbody flue or behind the air heater 13, treat that the liquid of atomizing is the desulfurization waste water of the limestone-gypsum wet process of power plant and the concentrated waste water of partial power plant emission waste water after the concentration of waste water decrement device 3 is concentrated, atomizing medium adopts in high temperature flue gas, high temperature steam and the compressed air at least .
kinds of thermal power plant wastewater atomizing nozzles 411 are shown in fig. 5, and comprise a concentrated wastewater introducing part 44, a high-temperature flue gas introducing part 46 and a working medium introducing part 45;
the concentrated wastewater introducing part 44 is provided with a concentrated wastewater introducing port 411a, the concentrated wastewater introducing port 411a is positioned on the central axis of the wastewater atomizing nozzle 411, and the outlet end of the concentrated wastewater introducing part 44 is positioned in the high-temperature flue gas introducing part 46; the high-temperature flue gas introducing piece 46 is sleeved outside the concentrated wastewater introducing piece 44 and continuously extends forwards to be flush with the end part of the working medium introducing piece 45; the high-temperature flue gas introducing piece 46 is provided with a high-temperature flue gas introducing port 411 b; the working medium introducing piece 45 is sleeved on the outer side of the high-temperature flue gas introducing piece 46, a working medium introducing port 411e is formed in the working medium introducing piece 45, and a mist outlet 411d is formed by the working medium introducing piece 45 and the outlet end of the high-temperature flue gas introducing piece 46.
The high-temperature flue gas inlet 411b is connected with the high-temperature flue gas inlet pipe 43, high-temperature flue gas generated by the boiler of the thermal power plant enters the wastewater atomizing nozzle 411 from the high-temperature flue gas inlet 411b through the high-temperature flue gas inlet pipe 43, an included angle between an incident angle of the high-temperature flue gas and a central axis of the wastewater atomizing nozzle 411 is 15-90 degrees, as shown in fig. 7, the high-temperature flue gas is introduced from any positions behind the coal-fired boiler 11, behind the denitration device 12, in front of the air preheater 13, or behind the air preheater 13.
The working medium introducing port 411e is connected with the working medium introducing pipe 411g, an included angle between an incident angle of the working medium and a central axis of the wastewater atomizing nozzle 411 is 15-90 degrees, as shown in fig. 7, the working medium of the working medium introducing port 411e comprises at least kinds of high-temperature steam and compressed air, and the high-temperature steam is introduced from any kinds of main steam, high-pressure cylinder steam extraction, high-pressure cylinder steam exhaust, reheating heat section steam extraction, intermediate cylinder steam extraction and intermediate cylinder steam extraction of a thermal power plant.
The working medium introducing port 411e is provided with temperature sensors, pressure sensors or flow sensors, wherein the sensors are resistance type, capacitance type, inductance type, photoelectric type, grating type, thermoelectric type, piezoelectric type, infrared type, optical fiber, ultrasonic wave and laser sensor.
, a flow regulating valve is arranged at the working medium introducing port 411e for regulating and controlling the flow of the working medium entering the atomizing and mixing chamber, preferably, the flow regulating valve is an electromagnetic valve, and the electromagnetic valve is any of direct-acting, step-by-step direct-acting and pilot-operated electromagnetic valves.
Waste water generated by a desulfurizing tower 7 in a waste water treatment system in a thermal power plant is collected in a waste water collecting header 2 and concentrated by a waste water high-temperature steam evaporation module 312, the concentrated and reduced waste water is sent into a concentrated waste water introducing port 411a in a waste water atomizing and evaporating device 41 of a waste water atomizing and evaporating device 4 through a concentrated waste water introducing pipe 42, at least of high-temperature smoke, intermediate pressure cylinder steam extraction and compressed air are introduced into the waste water atomizing nozzle 411 through a working medium introducing port 411e to atomize and concentrate the waste water, and particularly, the waste water treatment control system selects the type and the flow of a working medium entering the waste water atomizing nozzle 411 according to the detected flow of the concentrated waste water, the detection data of a temperature sensor and a pressure sensor, under the premise of ensuring that atomized particles can be completely vaporized and dried in a flue before entering an electric dust remover 5, the total heat brought into the waste water atomizing nozzle 411 by the high-temperature steam and the smoke is smaller than the total heat required by the complete evaporation and vaporization of the concentrated waste water, namely, the temperature in the waste water atomizing nozzle 411 does not reach the saturated temperature under the corresponding pressure, and the working condition that the smoke and scale of the concentrated waste water can not be fully evaporated and.
The thermal power plant ozone denitration system, the power plant peak shaving system and the power plant provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the novel method and its core concepts. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the novel principles of this invention, and these changes and modifications also fall within the scope of the appended claims.
Claims (10)
- The utility model provides an kind of thermal power plant waste water atomizing nozzle, its characterized in that introduces piece (45) including concentrated waste water introduction (44) and working medium, concentrated waste water introduction (44) are equipped with concentrated waste water introduction port (411a), be equipped with working medium introduction port (411e) on working medium introduction (45), working medium introduction (45) cover is established the outside of concentrated waste water introduction (44), concentrated waste water introduction (44) with the exit end of working medium introduction (45) forms fog outlet (411d) jointly.
- 2. kinds of thermal power plant waste water atomizing nozzle according to claim 1, characterized in that, the concentrated waste water introducing port (411a) is located on the central axis of the waste water atomizing nozzle (411), and the working medium introducing port (411e) is disposed obliquely or vertically.
- 3. The kinds of thermal power plant wastewater atomizing nozzle of claim 2, wherein the working medium introducing port (411e) forms an angle of 15-90 degrees with the central axis of the wastewater atomizing nozzle (411).
- 4. kinds of thermal power plant wastewater atomizing nozzle according to claim 3, wherein the working medium of said working medium introducing port (411e) includes at least kinds of high temperature flue gas, high temperature steam and compressed air.
- 5. The thermal power plant wastewater atomizing nozzle according to claim 4, wherein the high-temperature steam can be introduced from any of thermal power plant main steam, high-pressure cylinder steam extraction, reheating hot section steam extraction, intermediate pressure cylinder steam extraction and intermediate pressure cylinder steam extraction.
- 6. waste water atomizing nozzle for thermal power plant according to claim 4, wherein said high temperature flue gas is introduced from any locations after the coal-fired boiler (11) or after the denitration device (12) or after the air preheater (13).
- 7. The kinds of thermal power plant wastewater atomizing nozzle of claim 1, wherein the working fluid introducing port (411e) is installed with any kinds of sensors in temperature or pressure or flow rate.
- 8. waste water atomizing nozzle for thermal power plant as set forth in claim 1, wherein said working fluid introducing port (411e) is provided with a flow regulating valve for controlling the flow rate of the working fluid entering the waste water atomizing nozzle (411).
- An apparatus for atomizing waste water from a thermal power plant, 9, , characterized in that the apparatus (41) for atomizing waste water comprises an array of at least 2 waste water atomizing nozzles (411) according to any one of claims 1 to 8, .
- 10. waste water atomizing device for thermal power plant according to claim 9, characterized in that, the waste water atomizing device (41) is installed at any position before the air preheater (13) or after the air preheater (13) of the boiler back flue.
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| CN201920198427.5U CN210001617U (en) | 2019-02-13 | 2019-02-13 | waste water atomizing nozzle for thermal power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928274A (en) * | 2020-08-11 | 2020-11-13 | 华中科技大学 | Organic waste liquid atomizing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928274A (en) * | 2020-08-11 | 2020-11-13 | 华中科技大学 | Organic waste liquid atomizing device |
| CN111928274B (en) * | 2020-08-11 | 2021-11-23 | 华中科技大学 | Organic waste liquid atomizing device |
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