CN113175684A - Boiler brown coal is flue gas treatment environmental protection equipment for burning - Google Patents
Boiler brown coal is flue gas treatment environmental protection equipment for burning Download PDFInfo
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- CN113175684A CN113175684A CN202110383821.8A CN202110383821A CN113175684A CN 113175684 A CN113175684 A CN 113175684A CN 202110383821 A CN202110383821 A CN 202110383821A CN 113175684 A CN113175684 A CN 113175684A
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- fixedly connected
- flue gas
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- boiler
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000003546 flue gas Substances 0.000 title claims abstract description 72
- 239000003077 lignite Substances 0.000 title claims abstract description 40
- 230000007613 environmental effect Effects 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 219
- 238000002485 combustion reaction Methods 0.000 claims abstract description 31
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 29
- 230000023556 desulfurization Effects 0.000 claims abstract description 29
- 238000004140 cleaning Methods 0.000 claims description 18
- 239000000498 cooling water Substances 0.000 claims description 16
- 238000001223 reverse osmosis Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 239000010865 sewage Substances 0.000 claims description 9
- 238000000108 ultra-filtration Methods 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000002956 ash Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000029219 regulation of pH Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to the technical field of flue gas treatment, and discloses flue gas treatment environment-friendly equipment for boiler lignite combustion, which comprises a flue gas pipe and a support, wherein the outer ring of the flue gas pipe is fixedly connected with a condensing heat exchanger, the inner wall of the top of the condensing heat exchanger is fixedly connected with a cold water box, the bottom end of the cold water box is fixedly connected with a heat exchange pipe, the other end of the heat exchange pipe is fixedly connected with a hot water box, the top end of the cold water box is fixedly connected with a cold water pipe, the right side of the hot water box is fixedly connected with a hot water pipe, and the other end of the hot water pipe is fixedly connected with a desulfurization box. The emission of polluted water is reduced, and the environmental protection of flue gas treatment is greatly improved.
Description
Technical Field
The invention relates to the technical field of flue gas treatment, in particular to a flue gas treatment environment-friendly device for boiler lignite combustion.
Background
Provides strong fuel power and has wide prospect. Lignite is inferior fire coal which is short in formation age and large in performance elasticity variation, has the characteristics of high moisture, high volatile content, high ash content, low ash melting point and low calorific value, and due to the unique properties of lignite, namely three-high two-low, a power plant taking lignite as main fuel has many special requirements on various design parameters and safe and efficient operation machines of a combustion boiler. The normal operation of a lignite power plant is influenced by many factors such as the structure of a fire box of a combustion boiler, a pulverizing system, reasonable combustion equipment and the like.
After lignite is combusted, a large amount of high-temperature flue gas is generated, the flue gas contains pollutants such as fly ash, moisture, trace heavy metals, oxynitride, sulfide and the like, the environment can be seriously polluted by directly discharging the pollutants into the air, a large amount of cold water needs to be used in the existing flue gas treatment equipment, and flue gas condensate water is difficult to directly recycle due to the fact that the pollutants such as the fly ash, acidic substances, trace heavy metals and the like in the flue gas are dissolved, so that waste of water resources and discharge pollution are caused. Based on the above statement, we propose to provide a flue gas treatment environmental protection device for boiler lignite combustion.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the flue gas treatment environment-friendly equipment for boiler lignite combustion, which has the advantages of environmental protection, energy conservation, low pollution, cyclic utilization and the like, and solves the problems of environmental pollution caused by flue gas emission, water resource waste and difficulty in treatment of condensed water.
(II) technical scheme
In order to realize the purposes of environmental protection, energy conservation, low pollution and cyclic utilization, the invention provides the following technical scheme: the environment-friendly flue gas treatment equipment for lignite combustion of the boiler comprises a flue gas pipe and a support, wherein a condensation heat exchanger is fixedly connected to the outer ring of the flue gas pipe, a cold water box is fixedly connected to the inner wall of the top of the condensation heat exchanger, a heat exchange pipe is fixedly connected to the bottom end of the cold water box, a hot water box is fixedly connected to the other end of the heat exchange pipe, a cold water pipe is fixedly connected to the top end of the cold water box, a hot water pipe is fixedly connected to the right side of the hot water box, a desulfurization box is fixedly connected to the other end of the hot water pipe, an overflow pipe is fixedly connected to the rear side of the desulfurization box, a cooling water tank is fixedly connected to the other end of the overflow pipe, a cold water pump is fixedly connected to the output end of the cooling water tank, the output end of the cold water pump is fixedly connected with the cold water pipe, an automatic filter is fixedly connected to the bottom end of the condensation heat exchanger, and a clean water tank is fixedly connected to the output end of the automatic filter through a water pipe, the automatic cleaning device comprises a clean water tank, a motor, a gear shaft, an electric push rod, a stirring rod, a gear ring, a hopper bin, a cleaning box, a hose, a guide pipe, a filter and a filter screen, wherein the motor is fixedly arranged on the inner wall of the top of the clean water tank, the gear shaft is fixedly connected to the right side of the outer ring of the gear shaft in a meshed manner, the gear ring is connected to the left side of the outer ring of the gear shaft in a meshed manner, the hopper bin is fixedly connected to the inner wall of the top of the clean water tank, the electric push rod is fixedly arranged on the inner wall of the top of the clean water tank, the pH detector is fixedly connected to the output end of the electric push rod, the compressed water bag is fixedly connected to the right side of the electric push rod through a push plate, a one-way spring valve is fixedly connected to the bottom end of the compressed water bag, the cleaning box is fixedly connected to the inner wall of the top of the clean water tank through a hose, the one-way spring valve is fixedly connected to the left inner wall of the clean water tank, the outer ring of the guide pipe is fixedly connected to the filter screen, the other end fixedly connected with force (forcing) pump of pipe, the output fixedly connected with three solenoid valve of force (forcing) pump, the inner wall fixed mounting of support has the ultrafilter, the top fixed mounting of support has the reverse osmosis ware, three solenoid valve's left side leads to pipe and ultrafilter fixed connection, the former water tank of output fixedly connected with of ultrafilter, the output of former water tank leads to pipe fixedly connected with high-pressure pump, the output and the reverse osmosis ware fixed connection of high-pressure pump.
Preferably, the heat exchange tubes are U-shaped tubes, the heat exchange tubes are arranged in a plurality of staggered arrangement in the inner cavity of the condensation heat exchanger, when the gear shaft rotates three circles, the gear ring rotates one circle, and the stirring rod rotates five circles.
Preferably, tee bend solenoid valve's top leads to pipe and desulfurization case fixed connection, the tail end of flue gas pipe is loudspeaker form, and runs through and extend to the inside of desulfurization case, increases the area of contact of flue gas and doctor solution for desulfurization rate, the top fixedly connected with blast pipe of desulfurization case.
Preferably, the rectangle drain has been seted up to the positive bottom of clear water tank, and rectangle drain length is unanimous with the inside width of clear water tank, prevents to deposit and blocks up the drain, the front of clear water tank is through hinge fixedly connected with blowdown card strip, and the blowdown baffle card connects in the drain department of clear water tank.
Preferably, the gear ring is rotatably connected to the inner wall of the top of the clean water tank, the sliding groove is formed in the upper surface of the gear ring, the feeding hole is formed in the top of the clean water tank, and the feeding hole of the gear ring is matched with the feeding hole of the clean water tank.
Preferably, the output end of the hopper bin is in sliding connection with the sliding groove of the gear ring, the hopper bin is located right above the feeding hole of the clear water tank, and when the discharge hole of the hopper bin, the feeding hole of the gear ring and the feeding hole of the clear water tank are overlapped, the pH regulator falls into the clear water tank.
Preferably, the output end of the electric push rod penetrates through and extends to the outer side of the bottom of the cleaning box, and the extending end penetrates through and extends to the inside of the clean water tank.
Preferably, the bottom of the cleaning box is provided with a water outlet hole, the water outlet hole is positioned on the outer ring of the electric push rod, the outer ring of the electric push rod is sleeved with a rubber ring, and the rubber ring is positioned on the top end of the cleaning box.
Preferably, the bottom of the filter is in a funnel shape, a pollution discharge plug is connected to the bottom of the filter in a threaded mode, and the bottom of the stirring rod penetrates through and extends to the inside of the clean water tank.
(III) advantageous effects
Compared with the prior art, the invention provides the flue gas treatment environmental protection equipment for boiler lignite combustion, which has the following beneficial effects:
1. according to the environment-friendly flue gas treatment equipment for boiler lignite combustion, the inner cold water box, the hot water box and the heat exchange tubes are matched for use in the condensing heat exchanger, so that water vapor in flue gas is liquefied to obtain condensate water while heat exchange and temperature reduction are carried out on the flue gas, the heat exchange tubes are arranged in a tilted and staggered manner, the path of the flue gas passing through the condensing heat exchanger is lengthened, the contact area of the flue gas and the heat exchange tubes is increased, and the temperature reduction rate and the water vapor liquefaction capacity of high-temperature flue gas are improved;
2. according to the flue gas treatment environment-friendly equipment for boiler lignite combustion, cooling water and desulfurization liquid in a condensation heat exchanger are recycled through the matched use of the desulfurization tank, the cooling water tank, the cold water pump, the hot water pipe and the cold water pipe, so that water resources are fully utilized, and energy waste is avoided;
3. according to the environment-friendly flue gas treatment equipment for boiler lignite combustion, the electric push rod at the top of the clear water tank is matched with the pH detector, the pH detection of condensed water can be automatically carried out, the pH detector is timely cleaned through the matching use of the compressed water bag, the cleaning box and the electric push rod, the accuracy of a detection result is guaranteed, and the service life of the pH detector is prolonged;
4. according to the environment-friendly flue gas treatment equipment for boiler lignite combustion, a motor, a gear shaft, a stirring rod, a gear ring, a hopper bin and a pH detector are used in a circulating and matching mode, a small amount of pH regulator is added for multiple times and is uniformly stirred, the acidity of cooling water is reduced, the corrosivity of condensed water to a container or a pipeline is reduced, and a filter element and a reverse osmosis membrane are prevented from being damaged;
5. this environmental protection equipment is handled to flue gas for boiler brown coal burning through combining ultrafiltration and reverse osmosis technique, purifies into the demineralized water with the condensate water, reduces its pollution nature, can also be used for the replenishment of the demineralized water of boiler, and the condensate water accessible control three way solenoid valve through automatic filtration machine, pH regulation and filter flows back to carrying out reuse in the desulfurization case, has reduced the emission of contaminated water, has improved the environmental protection nature that the flue gas was handled greatly.
Drawings
FIG. 1 is a schematic structural diagram of a flue gas treatment environment-friendly device for boiler lignite combustion according to the present invention;
FIG. 2 is a schematic structural diagram of a condensing heat exchanger of the flue gas treatment environmental protection equipment for boiler lignite combustion according to the present invention;
FIG. 3 is a schematic structural diagram of a heat exchange tube and a hot water box of the flue gas treatment environmental protection equipment for boiler lignite combustion according to the present invention;
FIG. 4 is a schematic structural diagram of a desulfurization box and a flue gas pipe of the flue gas treatment environmental protection equipment for boiler lignite combustion according to the present invention;
FIG. 5 is a schematic structural diagram of a cooling water tank and a desulfurization tank of the flue gas treatment environmental protection equipment for boiler lignite combustion according to the present invention;
FIG. 6 is a schematic structural diagram of a clean water tank and a filter of the flue gas treatment environmental protection equipment for boiler lignite combustion according to the present invention;
FIG. 7 is a schematic diagram of a partial enlarged structure at A in FIG. 6 of the flue gas treatment environmental protection equipment for lignite combustion of a boiler in accordance with the present invention;
FIG. 8 is a schematic structural view of a gear shaft and a gear ring of the flue gas treatment environmental protection equipment for lignite combustion of a boiler of the present invention;
in the figure: 1. a flue gas pipe; 10. an exhaust pipe; 2. a condensing heat exchanger; 20. a cold water box; 21. a heat exchange pipe; 22. a hot water box; 23. a cold water pipe; 24. a hot water pipe; 3. a desulfurization box; 30. an overflow pipe; 31. a cooling water tank; 32. a cold water pump; 4. an automatic filter; 5. a clear water tank; 51. a motor; 52. a gear shaft; 53. a stirring rod; 54. a gear ring; 55. a hopper bin; 56. an electric push rod; 57. a pH detector; 58. a conduit; 59. a filter; 590. filtering with a screen; 50. compressing the water bag; 501. a one-way spring valve; 502. cleaning the box; 6. a pressure pump; 7. a three-way electromagnetic valve; 8. a support; 81. an ultrafilter; 82. a raw water tank; 83. a high pressure pump; 84. a reverse osmosis device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, a flue gas treatment environmental protection device for boiler lignite combustion comprises a flue gas pipe 1 and a support 8, wherein an outer ring of the flue gas pipe 1 is fixedly connected with a condensing heat exchanger 2, an inner wall of the top of the condensing heat exchanger 2 is fixedly connected with a cold water box 20, the bottom end of the cold water box 20 is fixedly connected with a heat exchange pipe 21, the other end of the heat exchange pipe 21 is fixedly connected with a hot water box 22, the top end of the cold water box 20 is fixedly connected with a cold water pipe 23, the right side of the hot water box 22 is fixedly connected with a hot water pipe 24, the other end of the hot water pipe 24 is fixedly connected with a desulfurization box 3, the rear side of the desulfurization box 3 is fixedly connected with an overflow pipe 30, the other end of the overflow pipe 30 is fixedly connected with a cooling water tank 31, the output end of the cooling water tank 31 is fixedly connected with a cold water pump 32, the output end of the cold water pump 32 is fixedly connected with the cold water pipe 23, and the bottom end of the condensing heat exchanger 2 is fixedly connected with an automatic filter 4, the output end of the automatic filter 4 is fixedly connected with a clean water tank 5 through a water pipe, the top inner wall of the clean water tank 5 is fixedly provided with a motor 51, the output end of the motor 51 is fixedly connected with a gear shaft 52, the right side of the outer ring of the gear shaft 52 is meshed with a stirring rod 53, the left side of the outer ring of the gear shaft 52 is meshed with a gear ring 54, when the gear shaft 52 rotates three times, the gear ring 54 rotates one time, the stirring rod 53 rotates five times, the top inner wall of the clean water tank 5 is fixedly connected with a hopper bin 55, the top inner wall of the clean water tank 5 is fixedly provided with an electric push rod 56, the output end of the electric push rod 56 is fixedly connected with a pH detector 57, the right side of the electric push rod 56 is fixedly connected with a compressed water bag 50 through a push plate, the bottom end of the compressed water bag 50 is fixedly connected with a one-way spring valve 501, the top inner wall of the clean water tank 5 is fixedly connected with a cleaning box 502, and the top end of the cleaning box 502 is fixedly connected with the one-way spring valve 501 through a hose, a guide pipe 58 is fixedly connected to the inner wall of the left side of the clean water tank 5, a filter 59 is fixedly connected to the outer ring of the guide pipe 58, a filter screen 590 is fixedly connected to the inner wall of the filter 59, a pressure pump 6 is fixedly connected to the other end of the guide pipe 58, a three-way electromagnetic valve 7 is fixedly connected to the output end of the pressure pump 6, an ultrafiltration machine 81 is fixedly installed on the inner wall of the support 8, a reverse osmosis device 84 is fixedly installed at the top end of the support 8, the left side of the three-way electromagnetic valve 7 is fixedly connected with the ultrafiltration machine 81 through a water pipe, a raw water tank 82 is fixedly connected to the output end of the ultrafiltration machine 81, a high-pressure pump 83 is fixedly connected to the output end of the raw water tank 82 through a water pipe, and the output end of the high-pressure pump 83 is fixedly connected with the reverse osmosis device 84;
the heat exchange tubes 21 are U-shaped tubes, the heat exchange tubes 21 are provided with a plurality of heat exchange tubes, the heat exchange tubes 21 are arranged in the inner cavity of the condensing heat exchanger 2 in a staggered manner, the top end of the three-way electromagnetic valve 7 is fixedly connected with the desulfurization box 3 through a water pipe, the tail end of the flue gas tube 1 is horn-shaped and penetrates and extends into the desulfurization box 3, the top of the desulfurization box 3 is fixedly connected with an exhaust pipe 10, the bottom of the front side of the clean water box 5 is provided with a rectangular sewage discharge outlet, the front side of the clean water box 5 is fixedly connected with a sewage discharge clamping strip through a hinge, a sewage discharge baffle is clamped at the sewage discharge outlet of the clean water box 5, the gear ring 54 is rotatably connected with the inner wall of the top of the clean water box 5, the upper surface of the gear ring 54 is provided with a sliding groove, the inner part of the gear ring 54 is provided with a feeding hole, the top of the clean water box 5 is provided with a feeding hole, the feeding hole of the gear ring 54 is matched with the feeding hole of the clean water box 5, the output end of the hopper 55 is slidably connected with the sliding groove of the gear ring 54, hopper storehouse 55 is located 5 feed ports of clear water tank directly over, electric putter 56's output runs through and extends to the bottom outside of washing box 502, and extend the inside that the end runs through and extends to clear water tank 5, the apopore has been seted up to the bottom of washing box 502, and the apopore is located the outer loop at electric putter 56, electric putter 56's outer loop has cup jointed the rubber circle, and the rubber circle is located the top of washing box 502, the bottom of filter 59 is the funnel shape, the bottom threaded connection of filter 59 has the blowdown stopper, the bottom of puddler 53 runs through and extends to the inside of clear water tank 5.
The working principle is as follows: the method comprises the steps that a cold water pump 32 is started through a PLC control system, cold water in a cooling water tank 31 is input into a cold water box 20 through a cold water pipe 23, the cold water enters a heat exchange pipe 21 after passing through the cold water box 20, flue gas generated after combustion of lignite firstly passes through a flue gas pipe 1 and a condensing heat exchanger 2, part of water vapor in high-temperature flue gas is condensed and liquefied through the heat exchange pipe 21, the cold water in the heat exchange pipe 21 is changed into hot water through heat exchange, the hot water enters a hot water box 22 and then enters a desulfurization box 3 through a hot water pipe 24, the hot water in the desulfurization box 3 enters the cooling water tank 31 through an overflow pipe for cooling, condensed water drops downwards and enters an automatic filter 4 for filtering, and the condensed water enters a clear water tank;
because the condensed water dissolves acidic substances, trace heavy metals and other pollutants in the flue gas, so that the condensed water is acidic, at the moment, the PLC control system starts the electric push rod 56 to drive the pH detector 57 to move downwards to extend into the filtered condensed water to detect the pH value of the condensed water, the electric push rod 56 simultaneously drives the bottom of the compressed water bag 50 to move downwards to increase the volume of the compressed water bag 50, the clean water flows into the compressed water bag 50, then the electric push rod 56 drives the pH detector 57 to move upwards to restore to the original position, the electric push rod 56 simultaneously drives the compressed water bag 50 to compress upwards to extrude the clean water in the compressed water bag 50 to flush the one-way spring valve 501, the clean water enters the cleaning box 502 through the hose and flows out of the water outlet of the cleaning box 502 to the pH detector 57 to clean the pH detector 57 for the next time, when the pH value of the filtered condensed water is lower than 7, the PLC control system starts the motor 51, the motor 51 drives the gear shaft 52 to rotate, the gear shaft 52 drives the stirring rod 53 to rotate to stir the condensed water in the clear water tank 5, the gear shaft 52 drives the gear ring 54 to rotate, when the feeding hole of the gear ring 54 is rotated to coincide with the feeding hole of the clear water tank 5, the pH regulator in the hopper bin 55 enters the clear water tank 5 to regulate the pH value of the condensed water in the clear water tank 5, the gear shaft 52 is stopped after rotating for three circles, the electric push rod 56 is started again to drive the pH detector 57 to detect the condensed water in the clear water tank 5, when the pH value of the filtered condensed water is lower than 7, the previous two steps are circulated, and when the pH value of the filtered condensed water is higher than 7 and lower than 8, the motor 51 and the electric push rod 56 are stopped;
after the pH value of the condensed water in the clean water tank 5 is adjusted, the pressure pump 6 is started to pump out the condensed water from the clean water tank 5, when the condensed water passes through the filter 59, impurities which cannot pass through the filter screen 590 fall on the bottom of the filter 59, the clean water enters the pressure pump 6 after passing through the filter screen 590 and is conveyed to the position of the three-way electromagnetic valve 7 through the output end of the pressure pump 6, when water needs to be supplemented into the desulfurization tank 3, the top output end of the three-way electromagnetic valve 7 is opened, the clean water enters the desulfurization tank 3 through a water pipe, when desalted water needs to be supplemented into the boiler, the left output end of the three-way electromagnetic valve 7 is opened, the clean water enters the ultrafilter 81 for ultrafiltration, the ultrafiltered water enters the raw water tank 82 and is conveyed into the reverse osmosis device 84 through the high-pressure pump 83, and finally the ultrafiltered water can be used.
To sum up, this boiler brown coal is flue gas treatment environmental protection equipment for burning, through the cooperation of cold water box 20 in the condensing heat exchanger 2, hot water box 22 and heat exchange tube 21 uses, carry out the heat transfer cooling with the steam liquefaction in the flue gas when carrying out the heat transfer cooling to the flue gas and obtain the comdenstion water, because heat exchange tube 21 slope dislocation arrangement has lengthened the flue gas and has passed through the route of condensing heat exchanger 2, increased the area of contact of flue gas and heat exchange tube 21, improved the cooling rate and the steam liquefaction ability of high temperature flue gas, through the cooperation of using of desulfurization case 3, cooling water tank 31, cold water pump 32, hot-water line 24, cold-water line 23, the cooling water and the doctor solution circulation in the condensing heat exchanger 2 use, make full use of water resource, avoided the energy waste, through the cooperation of electric putter 56 and pH detector 57 at the clear water tank 5 top, can carry out the pH detection of comdenstion water automatically, and through compressing water bag 50, the moisture content of water bag is good for the cooling is good for the boiler brown coal, and the boiler brown coal is good for the environment, The cleaning box 502 and the electric push rod 56 are matched for use, the pH detector 57 is cleaned in time, the accuracy of the detection result is ensured, the service life of the pH detector 57 is prolonged, through the circular matching use of the motor 51, the gear shaft 52, the stirring rod 53, the gear ring 54, the hopper bin 55 and the pH detector 57, a small amount of pH regulator is added for many times and is uniformly stirred, the acidity of cooling water is reduced, the corrosivity of condensed water to a container or a pipeline is reduced, the damage to a filter element and a reverse osmosis membrane is avoided, through combining ultrafiltration and reverse osmosis technique, purify into the demineralized water with the comdenstion water, reduce its pollution nature, can also be used for the replenishment of the demineralized water of boiler, carry out reuse in the comdenstion water accessible control three way solenoid valve 7 backward flow to desulfurization case 3 through automatic filtration, pH adjustment and filter 59, reduced the emission of contaminated water, improved the feature of environmental protection that the flue gas was handled greatly.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a boiler brown coal is flue gas treatment environmental protection equipment for burning, includes flue gas pipe (1) and support (8), its characterized in that: the flue gas pipe is characterized in that an outer ring of the flue gas pipe (1) is fixedly connected with a condensing heat exchanger (2), the inner wall of the top of the condensing heat exchanger (2) is fixedly connected with a cold water box (20), the bottom end of the cold water box (20) is fixedly connected with a heat exchange pipe (21), the other end of the heat exchange pipe (21) is fixedly connected with a hot water box (22), the top end of the cold water box (20) is fixedly connected with a cold water pipe (23), the right side of the hot water box (22) is fixedly connected with a hot water pipe (24), the other end of the hot water pipe (24) is fixedly connected with a desulfurization tank (3), the rear side of the desulfurization tank (3) is fixedly connected with an overflow pipe (30), the other end of the overflow pipe (30) is fixedly connected with a cooling water tank (31), the output end of the cooling water tank (31) is fixedly connected with a cold water pump (32), and the output end of the cold water pump (32) is fixedly connected with the cold water pipe (23), the bottom end of the condensation heat exchanger (2) is fixedly connected with an automatic filter (4), the output end of the automatic filter (4) is fixedly connected with a clean water tank (5) through a water pipe, the inner wall of the top of the clean water tank (5) is fixedly provided with a motor (51), the output end of the motor (51) is fixedly connected with a gear shaft (52), the right side of the outer ring of the gear shaft (52) is meshed and connected with a stirring rod (53), the left side of the outer ring of the gear shaft (52) is meshed and connected with a gear ring (54), the inner wall of the top of the clean water tank (5) is fixedly connected with a hopper bin (55), the inner wall of the top of the clean water tank (5) is fixedly provided with an electric push rod (56), the output end of the electric push rod (56) is fixedly connected with a pH detector (57), and the right side of the electric push rod (56) is fixedly connected with a compressed water bag (50) through a push plate, the bottom end of the compressed water bag (50) is fixedly connected with a one-way spring valve (501), the top inner wall of the clear water tank (5) is fixedly connected with a cleaning box (502), the top end of the cleaning box (502) is fixedly connected with the one-way spring valve (501) through a hose, the left inner wall of the clear water tank (5) is fixedly connected with a conduit (58), the outer ring of the conduit (58) is fixedly connected with a filter (59), the inner wall of the filter (59) is fixedly connected with a filter screen (590), the other end of the conduit (58) is fixedly connected with a pressure pump (6), the output end of the pressure pump (6) is fixedly connected with a three-way electromagnetic valve (7), the inner wall of the bracket (8) is fixedly provided with an ultrafiltration machine (81), the top end of the bracket (8) is fixedly provided with a reverse osmosis device (84), the left side of the three-way electromagnetic valve (7) is fixedly connected with the ultrafiltration machine (81) through a water pipe, the output end of the ultrafiltration machine (81) is fixedly connected with a raw water tank (82), the output end of the raw water tank (82) is fixedly connected with a high-pressure pump (83) through a water pipe, and the output end of the high-pressure pump (83) is fixedly connected with a reverse osmosis device (84).
2. The flue gas treatment environmental protection equipment for boiler lignite combustion according to claim 1, characterized in that: the heat exchange tubes (21) are U-shaped tubes, and the heat exchange tubes (21) are arranged in the inner cavity of the condensation heat exchanger (2) in a staggered mode.
3. The flue gas treatment environmental protection equipment for boiler lignite combustion according to claim 1, characterized in that: the top of three solenoid valve (7) leads to pipe and desulfurization case (3) fixed connection, the tail end of flue gas pipe (1) is loudspeaker form, and runs through and extend to the inside of desulfurization case (3), the top fixedly connected with blast pipe (10) of desulfurization case (3).
4. The flue gas treatment environmental protection equipment for boiler lignite combustion according to claim 1, characterized in that: the rectangular sewage draining port is formed in the bottom of the front face of the clean water tank (5), the front face of the clean water tank (5) is fixedly connected with a sewage draining clamping strip through a hinge, and the sewage draining baffle is clamped at the sewage draining port of the clean water tank (5).
5. The flue gas treatment environmental protection equipment for boiler lignite combustion according to claim 1, characterized in that: the feeding device is characterized in that the gear ring (54) is rotatably connected to the inner wall of the top of the clear water tank (5), a sliding groove is formed in the upper surface of the gear ring (54), a feeding hole is formed in the top of the clear water tank (5), and the feeding hole of the gear ring (54) is matched with the feeding hole of the clear water tank (5).
6. The flue gas treatment environmental protection equipment for boiler lignite combustion according to claim 1, characterized in that: the output end of the hopper bin (55) is connected with the sliding groove of the gear ring (54) in a sliding mode, and the hopper bin (55) is located right above the feeding hole of the clear water tank (5).
7. The flue gas treatment environmental protection equipment for boiler lignite combustion according to claim 1, characterized in that: the output end of the electric push rod (56) penetrates through and extends to the outer side of the bottom of the cleaning box (502), and the extending end penetrates through and extends to the inside of the clean water tank (5).
8. The flue gas treatment environmental protection equipment for boiler lignite combustion according to claim 1, characterized in that: the bottom of the cleaning box (502) is provided with a water outlet hole, the water outlet hole is positioned on the outer ring of the electric push rod (56), the outer ring of the electric push rod (56) is sleeved with a rubber ring, and the rubber ring is positioned on the top end of the cleaning box (502).
9. The flue gas treatment environmental protection equipment for boiler lignite combustion according to claim 1, characterized in that: the bottom of the filter (59) is in a funnel shape, the bottom of the filter (59) is in threaded connection with a sewage plug, and the bottom of the stirring rod (53) penetrates through and extends into the clean water tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110383821.8A CN113175684A (en) | 2021-04-09 | 2021-04-09 | Boiler brown coal is flue gas treatment environmental protection equipment for burning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110383821.8A CN113175684A (en) | 2021-04-09 | 2021-04-09 | Boiler brown coal is flue gas treatment environmental protection equipment for burning |
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| CN113175684A true CN113175684A (en) | 2021-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865378A (en) * | 2021-11-08 | 2021-12-31 | 赤峰山金银铅有限公司 | Heat exchanger for contaminated acidic liquid |
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- 2021-04-09 CN CN202110383821.8A patent/CN113175684A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865378A (en) * | 2021-11-08 | 2021-12-31 | 赤峰山金银铅有限公司 | Heat exchanger for contaminated acidic liquid |
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Application publication date: 20210727 |