CN110986622A - Countercurrent heat exchange type preheater and use method thereof - Google Patents
Countercurrent heat exchange type preheater and use method thereof Download PDFInfo
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- CN110986622A CN110986622A CN201911299337.6A CN201911299337A CN110986622A CN 110986622 A CN110986622 A CN 110986622A CN 201911299337 A CN201911299337 A CN 201911299337A CN 110986622 A CN110986622 A CN 110986622A
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- gear
- cyclone
- heat exchange
- fixed mounting
- preheater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
- F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a countercurrent heat exchange type preheater which comprises a preheater main body, wherein the preheater main body comprises a heat exchange area and a separation area, the heat exchange area comprises a heat exchange pipeline, an air inlet and a feed inlet, the separation area comprises a cyclone cylinder, an air outlet and a discharge outlet, the feed inlet is positioned at the upper end of the heat exchange pipeline, the air inlet is positioned at the lower end of the heat exchange pipeline, the air outlet is positioned at the upper end of the cyclone cylinder, the discharge outlet is positioned at the lower end of the cyclone cylinder, both sides of the middle of the cyclone cylinder are embedded and provided with static eliminator, both sides of the discharge outlet are embedded and provided with anti-blocking devices, and the side wall of the upper end of the cyclone. The invention can accelerate the speed of the material discharged from the cyclone cylinder by matching the sprayer and the static eliminator, and the anti-blocking device can solve the blocking problem, and the three are perfectly matched, thereby reducing the failure rate.
Description
Technical Field
The invention relates to the field of sewage equipment, in particular to a countercurrent heat exchange type preheater and a using method thereof.
Background
MVR, an evaporator, uses an energy-saving technique that reuses the energy of secondary steam generated by itself, thereby reducing the demand for external energy. As early as 60 s, Germany and France have successfully applied the technology to the fields of chemical industry, food, paper making, medicine, seawater desalination, sewage treatment and the like. In MVR's sewage treatment process, need use the preheater to preheat chemical material, improve heat exchange performance, reduce energy consumption.
Through the retrieval, chinese patent application No. 2017110224100.8, the publication date is 2018.01.19, discloses a technical scheme based on the pre-heater in the MVR technique, and this technical scheme includes the pre-heater casing, the pre-heater casing includes shell and inner shell, the space forms a steam chamber before shell and the inner shell, and the shell both sides are connected with steam inlet pipeline respectively, be provided with a set of serpentine pipe in the inner shell at least, serpentine pipe both ends opening is connected with raw materials liquid feed liquor pipe and raw materials liquid drain pipe respectively, and the inner shell is provided with a plurality of air vents all around, the steam chamber passes through air vent and the inside intercommunication of inner shell. The preheater disclosed by the invention is ingenious in design, simple in structure, free of additional steam production, uniform in preheating, good in preheating effect and quick in preheating time. However, in the technical scheme, when the solid material is preheated, the blockage is easy to occur;
through retrieval, Chinese patent application No. 02212925.1, published as 2002.12.25, discloses a technical scheme of a cyclone preheater, and belongs to the field of cement machinery. The cyclone comprises a last-stage cyclone barrel communicated with a kiln tail smoke chamber of the rotary kiln, and is characterized in that a decomposing furnace is arranged between the kiln tail smoke chamber of the rotary kiln and the last-stage cyclone barrel, a tertiary air pipe and a coal injection pipe which are communicated with the decomposing furnace are arranged on the decomposing furnace, the upper part of the decomposing furnace is of a gooseneck type bent pipe structure, the middle part of the decomposing furnace is a hollow cylinder with unequal diameters, the decomposing furnace is formed by connecting the upper part and the lower part, and a hollow circular table and a necking connected with the hollow circular table are sequentially. The utility model discloses owing to reform transform the uptake flue between current rotary kiln tail smoke chamber and the last stage cyclone into the dore furnace of specific structural style, and set up rather than communicating cubic tuber pipe and coal injection pipe on the dore furnace, make the pulverized coal burning in the dore furnace produce huge heat, raw meal powder endotherm back temperature rises to more than 8509, more than 85% calcium carbonate in the raw meal has carried out the decomposition, make the output of kiln can improve by a wide margin, design output can improve about 30-50%, improve about 55% than actual output, though this technical scheme, the output has been improved, but in practical application, the phenomenon that cement blockked up appears easily takes place, for this reason, the invention provides a heat exchanger preheater against the current.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a countercurrent heat exchange type preheater.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a heat exchange type preheater against current, includes the preheater main part, the preheater main part includes heat transfer district and disengagement zone, the heat transfer district includes heat transfer pipeline, air inlet and feed inlet, the disengagement zone includes whirlwind section of thick bamboo, gas outlet and discharge gate, the feed inlet is located the upper end of heat transfer pipeline, the air inlet is located the lower extreme of heat transfer pipeline, the gas outlet is located the upper end of whirlwind section of thick bamboo, the discharge gate is located the lower extreme of whirlwind section of thick bamboo, the electrostatic eliminator is installed in the equal embedding in middle both sides position of whirlwind section of thick bamboo, anti-clogging device is installed in the equal embedding in both sides of discharge gate, fixed mounting has the.
Preferably, the lower extreme fixed mounting of atomizer has the water pitcher, and the inside of water pitcher is provided with the straw, the top fixed mounting of water pitcher has automatic telescopic link, and one side fixed mounting of automatic telescopic link has a spring No. one, the upper end fixed mounting of atomizer has the outlet pipe, and the front end fixed mounting of outlet pipe has the nozzle.
Preferably, the inside of electrostatic eliminator is close to lower extreme position fixed mounting and is had high voltage power supply generator, and the top of high voltage power supply generator is close to the equal fixed mounting in both ends position and has the discharge electrode, the inside of electrostatic eliminator is close to upper end position fixed mounting and has the fan.
Preferably, anti-clogging device includes motor, a gear, No. two gears and No. three gears are located the both sides of a gear respectively, a gear respectively with No. two gears, No. three gear intermeshing, all install No. four gears on No. two gears and No. three gears, the epaxial perpendicular slidable mounting of wheel of a gear has the pole of pounding, No. four gears with pole of pounding intermeshing.
Preferably, the length of the tamping rod is twice the diameter of the fourth gear.
Preferably, the fourth gear is half of the whole gear.
Preferably, a sealing ring is arranged at the joint of the cyclone cylinder and the heat exchange pipeline, the sealing ring comprises a rubber ring and N second springs, the N second springs are arranged in the rubber ring at equal intervals, and N is a natural number and is at least 1.
Preferably, a feeding pipe is arranged between the feeding port and the heat exchange pipeline, and the shape of the feeding pipe is a curve.
A method for using a countercurrent heat exchange type preheater comprises the following specific steps:
s1: sending hot gas into a heat exchange pipeline through a blower;
s2: opening the electrostatic eliminator and the sprayer in the cyclone cylinder;
s3: pouring materials from a feeding hole, and allowing the materials to enter the cyclone cylinder under the action of the air blower;
s4: after being processed in the cyclone, hot gas is discharged from the upper end gas outlet, and materials are discharged from the lower end discharge hole.
Preferably, in S4, when the material is discharged from the lower discharge port and is blocked, the anti-blocking device is opened to unblock the material.
Compared with the prior art, the invention provides a countercurrent heat exchange type preheater and a using method thereof, and the countercurrent heat exchange type preheater has the following beneficial effects:
(1) the invention can keep the wettability in the cyclone cylinder through the arranged sprayer, so that the gravity of the material is increased and the blockage is not easy to occur, and the separation effect is improved;
(2) the electrostatic eliminator can prevent the cyclone cylinder from generating static electricity during separation, so that materials are prevented from being adsorbed on the inner wall of the cyclone cylinder, the discharge of the materials is accelerated, the accumulation of the materials is further prevented, and the probability of blockage is reduced;
(3) through the arranged anti-blocking device, when the discharge port is blocked, the tamping rod can be vertically and reciprocally tamped into the blocked material, so that the material is loosened, and the problem of blocking is solved;
(4) the sprayer and the static eliminator are matched for use, so that the speed of discharging materials out of the cyclone can be increased, meanwhile, the blockage prevention device can solve the blockage problem, the sprayer, the static eliminator and the cyclone can be perfectly matched, and the failure rate is reduced;
(5) the sealing ring can be prevented from loosening during vibration through the arranged sealing ring, so that the tightness of the preheater is well kept;
(6) by designing the shape of the feeding pipe into a curve, the feeding speed is increased because the curve descends faster than the straight line in the descending process of the material although the straight line between two points is shortest.
The parts which are not related in the invention are the same as the prior art or can be realized by the prior art, and the invention has simple structure and convenient operation.
Drawings
FIG. 1 is a schematic structural view of a preheater body according to the present invention;
FIG. 2 is a schematic view of the sprayer according to the invention;
FIG. 3 is a schematic view of the construction of the anti-clogging device of the present invention;
FIG. 4 is a schematic view of the electrostatic eliminator according to the present invention;
fig. 5 is a schematic structural diagram of the sealing ring of the present invention.
In the figure: 1. a preheater main body; 2. a feed inlet; 3. a discharge port; 4. an air inlet; 5. a heat exchange conduit; 6. a cyclone; 7. a seal ring; 8. an air outlet; 9. a sprayer; 10. a static eliminator; 11. an anti-clogging device; 12. a water tank; 13. a straw; 14. automatically telescoping the rod; 15. a first spring; 16. a water outlet pipe; 17. a nozzle; 18. a first gear; 19. a second gear; 20. a third gear; 21. a fourth gear; 22. a tamping rod; 23. a discharge electrode; 24. a fan; 25. a high voltage power generator; 26. a rubber ring; 27. and a second spring.
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.
Example 1
As shown in fig. 1-2, a heat exchange type preheater against current, including preheater main part 1, preheater main part 1 includes heat transfer district and disengagement zone, the heat transfer district includes heat transfer pipeline 5, air inlet 4 and feed inlet 2, the disengagement zone includes cyclone 6, gas outlet 8 and discharge gate 3, feed inlet 2 is located heat transfer pipeline 5's upper end, air inlet 4 is located heat transfer pipeline 5's lower extreme, gas outlet 8 is located cyclone 6's upper end, discharge gate 3 is located cyclone 6's lower extreme, electrostatic eliminator 10 is all installed in the equal embedding in middle both sides position of cyclone 6, anti-clogging device 11 is all installed in the equal embedding in both sides of discharge gate 3, fixed mounting has atomizer 9 on cyclone 6's the upper end lateral wall. The sprayer 9 and the electrostatic eliminator 10 are matched for use, so that the speed of discharging materials out of the cyclone cylinder 6 can be increased, and meanwhile, the blockage prevention device 11 can solve the problem of blockage, and the failure rate is reduced due to perfect matching of the sprayer, the cyclone cylinder and the blockage prevention device.
Wherein, the lower extreme fixed mounting of atomizer 9 has water pitcher 12, and the inside of water pitcher 12 is provided with straw 13, and the top fixed mounting of water pitcher 12 has automatic telescopic link 14, and one side fixed mounting of automatic telescopic link 14 has spring 15 No. one, and the upper end fixed mounting of atomizer 9 has outlet pipe 16, and the front end fixed mounting of outlet pipe 16 has nozzle 17.
Through the atomizer 9 that sets up, can keep the inside wettability of cyclone 6, make material gravity increase difficult jam, improved the separation effect, open the inside automatic telescopic rod 14 of atomizer 9, constantly flexible extrusion spring 15, the continuous grow of air pressure diminishes, straw 13 then constantly inhales the inside water of water pitcher 12, thereby make water spout into cyclone 6 in through nozzle 17, the material is moist the back to a certain extent, gravity increases, then can discharge cyclone 6 with higher speed.
Referring to fig. 4, a high voltage power generator 25 is fixedly installed inside the static eliminator 10 near the lower end, discharge electrodes 23 are fixedly installed above the high voltage power generator 25 near both ends, and a blower 24 is fixedly installed inside the static eliminator 10 near the upper end.
The electrostatic eliminator 10 can prevent the cyclone 6 from generating static electricity during separation, so that materials are prevented from being adsorbed on the inner wall of the cyclone 6, the discharge of the materials is accelerated, the accumulation of the materials is further prevented, and the probability of blockage is reduced; the electrostatic eliminator 10 ionizes air into a large number of positive and negative ions by a high voltage power generator 25 and a discharge electrode 23, and then disperses the large number of positive and negative ions inside the cyclone 6 by a fan 24 to neutralize the static electricity, the model number of the electrostatic eliminator 10 is Y198.
The anti-blocking device 11 comprises a motor, a first gear 18, a second gear 19 and a third gear 20, wherein the second gear 19 and the third gear 20 are respectively positioned at two sides of the first gear 18, the first gear 18 is respectively meshed with the second gear 19 and the third gear 20, a fourth gear 21 is respectively arranged on the second gear 19 and the third gear 20, a tamping rod 22 is vertically and slidably arranged on a wheel shaft of the first gear 18, and the fourth gear 21 is meshed with the tamping rod 22; the length of the tamper 22 is twice of the diameter of the fourth gear 21; the fourth gear 21 is one half of the whole gear.
Referring to fig. 3, when the discharge port 3 is blocked, the anti-blocking device 11 is arranged, and when the discharge port 3 is blocked, the tamping rod 22 can be vertically and reciprocally tamped into the blocked material, so that the material is loosened, and the problem of blocking is solved, the motor is started, the motor is connected with the first gear 18, the motor drives the first gear 18 to rotate, because the second gear 19 and the third gear 20 are respectively positioned at two sides of the first gear 18, the first gear 18 is respectively meshed with the second gear 19 and the third gear 20, so the second gear 19 and the third gear 20 also rotate in opposite directions, specifically speaking, clockwise, the first gear 18 rotates anticlockwise, the second gear 19 and the third gear 20 rotate clockwise, the fourth gear 21 is respectively arranged on the second gear 19 and the third gear 20, the fourth gear 21 also rotates clockwise, and because the fourth gear 21 is half of the gear, the fourth gear 21 on the second gear 19 is firstly meshed with the tamper 22 to drive the tamper 22 to move upwards, after the second gear 19 rotates by half, the fourth gear 21 on the second gear 19 is separated from the tamper 22, and the fourth gear 21 on the third gear 20 is just meshed with the tamper 22 from the upper end of the tamper 22.
Example 2
As shown in fig. 5, in the embodiment of the present invention, on the basis of the embodiment, a sealing ring 7 is disposed at a connection portion of a cyclone 6 and a heat exchange pipe 5, the sealing ring 7 includes a rubber ring 26 and N second springs 27, the N second springs 27 are equidistantly disposed inside the rubber ring 26, and N is a natural number and is at least 1.
Through the sealing washer 7 that sets up, can prevent that sealing washer 7 is not hard up when vibrations to fine leakproofness that keeps the pre-heater, No. two spring 27 equidistance sets up in the inside of rubber circle 26, and the air-blower blows in the material in the cyclone 6, the vibrations that can be continuous, and continuous vibrations are then continuous presses No. two spring 27, and No. two spring 27 is with its effect on rubber circle 26, thereby make rubber circle 26 more stable fix in the recess, reach stable sealed effect.
A feeding pipe is arranged between the feeding port 2 and the heat exchange pipeline 5, and the shape of the feeding pipe is a curve.
By designing the shape of the feeding pipe to be a curve, the feeding speed is increased because the curve descends faster than the straight line during the descending process of the material although the straight line between the two points is shortest.
In need of description, a countercurrent heat exchange type preheater firstly sends hot gas into a heat exchange pipeline 5 through a blower when in work; the electrostatic eliminator 10 and the sprayer 9 in the cyclone 6 are opened to accelerate the discharge of the materials, and the electrostatic eliminator 10 can prevent the cyclone 6 from generating static electricity during separation, so that the materials are prevented from being adsorbed on the inner wall of the cyclone 6, the discharge of the materials is accelerated, the accumulation of the materials is further prevented, and the probability of blockage is reduced; the static eliminator 10 ionizes air into a large number of positive and negative ions through a high-voltage power generator 25 and a discharge electrode 23, and then a fan 24 disperses the large number of positive and negative ions in the cyclone 6 to neutralize static; through the atomizer 9 that sets up, can keep the inside wettability of cyclone 6, make material gravity increase difficult jam, improved the separation effect, open the inside automatic telescopic rod 14 of atomizer 9, constantly stretch out and draw back and extrude a spring 15, the continuous grow of air pressure diminishes, straw 13 then constantly inhales the inside water of water pitcher 12 to make water spout into cyclone 6 through nozzle 17 in, the material is moist to a certain extent, discharge cyclone 6 with higher speed.
Then the material is poured into the cyclone 6 from the feeding hole 2 under the action of the blower; after being processed in the cyclone cylinder 6, hot gas is discharged from the upper end gas outlet 8, materials are discharged from the lower end discharge port 3, and when the materials are discharged from the lower end discharge port 3, the anti-clogging device 11 is opened for dredging, the working principle is that the motor is started, the motor is connected with the first gear 18, the motor drives the first gear 18 to rotate, the second gear 19 and the third gear 20 are respectively positioned at two sides of the first gear 18, the first gear 18 is respectively meshed with the second gear 19 and the third gear 20, so the second gear 19 and the third gear 20 also rotate in opposite directions, specifically speaking, the first gear 18 rotates clockwise, the second gear 19 and the third gear 20 rotate clockwise, the fourth gear 21 is arranged on the second gear 19 and the third gear 20, the fourth gear 21 also rotates clockwise, and the fourth gear 21 is half of the gear, the fourth gear 21 on the second gear 19 is firstly meshed with the tamper 22 to drive the tamper 22 to move upwards, after the second gear 19 rotates by half, the fourth gear 21 on the second gear 19 is separated from the tamper 22, and the fourth gear 21 on the third gear 20 is just meshed with the tamper 22 from the upper end of the tamper 22.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. A counterflow heat exchanger preheater includes a preheater body (1), characterized in that: preheater main part (1) is including heat transfer district and separation zone, the heat transfer district includes heat transfer pipeline (5), air inlet (4) and feed inlet (2), the separation zone includes cyclone (6), gas outlet (8) and discharge gate (3), feed inlet (2) are located the upper end of heat transfer pipeline (5), air inlet (4) are located the lower extreme of heat transfer pipeline (5), gas outlet (8) are located the upper end of cyclone (6), discharge gate (3) are located the lower extreme of cyclone (6), electrostatic eliminator (10) are installed in the equal embedding of middle both sides position of cyclone (6), anti-clogging device (11) are installed in the equal embedding in both sides of discharge gate (3), fixed mounting has atomizer (9) on the upper end lateral wall of cyclone (6).
2. A reverse flow heat exchange preheater according to claim 1, wherein: the lower extreme fixed mounting of atomizer (9) has water pitcher (12), and the inside of water pitcher (12) is provided with straw (13), the top fixed mounting of water pitcher (12) has automatic telescopic link (14), and one side fixed mounting of automatic telescopic link (14) has spring (15), the upper end fixed mounting of atomizer (9) has outlet pipe (16), and the front end fixed mounting of outlet pipe (16) has nozzle (17).
3. A reverse flow heat exchange preheater according to claim 1, wherein: the inside of electrostatic eliminator (10) is close to lower extreme position fixed mounting and has high voltage power supply generator (25), and the top of high voltage power supply generator (25) is close to the equal fixed mounting in both ends position and has discharge electrode (23), the inside of electrostatic eliminator (10) is close to upper end position fixed mounting and has fan (24).
4. A reverse flow heat exchange preheater according to claim 1, wherein: anti-clogging device (11) include motor, a gear (18), No. two gears (19) and No. three gears (20) are located the both sides of a gear (18) respectively, a gear (18) respectively with No. two gears (19), No. three gears (20) intermeshing, all install No. four gears (21) on No. two gears (19) and No. three gears (20), the epaxial perpendicular slidable mounting of wheel of a gear (18) has ram (22), No. four gears (21) with ram (22) intermeshing.
5. A counterflow heat exchanger preheater as in claim 4, wherein: the length of the tamper bar (22) is twice of the diameter of the fourth gear (21).
6. A counterflow heat exchanger preheater as in claim 4, wherein: the fourth gear (21) is half of the whole gear.
7. A reverse flow heat exchange preheater according to claim 1, wherein: the cyclone (6) with the junction of heat transfer pipeline (5) is provided with sealing washer (7), sealing washer (7) include rubber circle (26) and a plurality of No. two spring (27), a plurality of No. two spring (27) equidistance setting are in the inside of rubber circle (26), N is the natural number, and is 1 at least.
8. A reverse flow heat exchange preheater according to claim 1, wherein: the feed inlet (2) with be provided with the inlet pipe between heat transfer pipeline (5), the inlet pipe shape is the curve.
9. A method of using a reverse flow heat exchange preheater according to any one of claims 1 to 8, said method comprising the steps of:
s1: sending hot gas into a heat exchange pipeline (5) through a blower;
s2: opening the electrostatic eliminator (10) and the sprayer (9) in the cyclone (6);
s3: pouring materials from the feeding hole (2), and enabling the materials to enter the cyclone (6) under the action of the air blower;
s4: after being processed in the cyclone (6), hot gas is discharged from the upper end gas outlet (8), and materials are discharged from the lower end discharge hole (3).
10. A method of using a reverse heat exchange preheater according to claim 9, wherein in S4, when the material is blocked when it is discharged from the lower discharge port (3), the blockage-preventing means (11) is opened for unblocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911299337.6A CN110986622A (en) | 2019-12-17 | 2019-12-17 | Countercurrent heat exchange type preheater and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911299337.6A CN110986622A (en) | 2019-12-17 | 2019-12-17 | Countercurrent heat exchange type preheater and use method thereof |
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| CN110986622A true CN110986622A (en) | 2020-04-10 |
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| CN202010516U (en) * | 2011-04-20 | 2011-10-19 | 茂名市银华高岭土实业有限公司 | Flue gas whirlwind water mist dust removal and desulfurization device |
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Application publication date: 20200410 |