CN111765782B - Boiler flue gas waste heat recovery device and recovery method - Google Patents
Boiler flue gas waste heat recovery device and recovery method Download PDFInfo
- Publication number
- CN111765782B CN111765782B CN202010648126.5A CN202010648126A CN111765782B CN 111765782 B CN111765782 B CN 111765782B CN 202010648126 A CN202010648126 A CN 202010648126A CN 111765782 B CN111765782 B CN 111765782B
- Authority
- CN
- China
- Prior art keywords
- pipe
- heat exchange
- flue gas
- tube
- fixedly connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/02—Non-rotary, e.g. reciprocated, appliances having brushes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a boiler flue gas waste heat recovery device and a recovery method, belonging to the technical field of flue gas waste heat recovery, the boiler flue gas waste heat recovery device comprises a device shell, a heat exchange pipe is arranged in the device shell, and the upper end of the heat exchange pipe is fixedly connected with an air inlet pipe, in the process of recovering the waste heat of flue gas, a main cleaning ball and an auxiliary cleaning ball are pushed by flue gas flow, so that the main cleaning ball and the auxiliary cleaning ball roll in the heat exchange pipe in turn in a circulating manner, the inner wall of the heat exchange pipe is cleaned continuously and synchronously in the process of recovering the waste heat, flue gas particles attached to the inner wall of the heat exchange pipe are cleaned, and when the main cleaning ball and the auxiliary cleaning ball finish primary cleaning of the heat exchange pipe, in the process of returning to the air inlet end of the heat exchange pipe, the processes of self cleaning, dehydration, drying and the like are sequentially realized, and then the heat exchange pipe is cleaned again in the heat exchange pipe, thereby further ensuring the cleaning effect of the heat exchange pipe.
Description
Technical Field
The invention relates to the technical field of flue gas waste heat recovery, in particular to a boiler flue gas waste heat recovery device and a recovery method.
Background
Due to energy shortage, the energy-saving work is further developed. Various novel advanced energy-saving furnaces are gradually improved, and the heat dissipation loss of the furnace is obviously reduced after the novel high-quality heat-insulating materials such as refractory fibers are adopted. The advanced combustion device is adopted to strengthen the combustion, the incomplete combustion amount is reduced, and the air-fuel ratio is also reasonable. However, the technology for reducing the heat loss of the exhaust gas and recovering the waste heat of the exhaust gas is still not fast, in order to further improve the heat efficiency of the kiln and achieve the purpose of energy saving and consumption reduction, the recovery of the waste heat of the exhaust gas is also an important energy-saving way, and the recovery of the waste heat of the exhaust gas mainly converts the heat carried by the exhaust gas into the heat which can be utilized through a certain heat exchange mode.
The gas-water waste heat recovery mode is a common waste heat recovery mode, namely, flue gas exchanges heat with condensate water through a heat exchange pipe, the temperature of the condensate water is increased, and the temperature of the flue gas is reduced.
However, the flue gas contains impurities such as particles, dust and waste residues, so that the flue gas waste heat recovery device can suck the impurities such as the particles and the waste residues together when absorbing the flue gas, the particles are easy to accumulate in the heat exchange tube in the working process, the heat exchange tube is easy to block after long-term use, and if the flue gas waste heat recovery device is subjected to dust removal treatment firstly, the temperature of the flue gas is reduced, and the waste heat loss of the flue gas is caused. Based on the above problems, in order to ensure the full utilization of the flue gas waste heat, the problem of blockage of the heat exchange pipe caused by the smoke dust impurity particles needs to be solved.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a boiler flue gas waste heat recovery device and a recovery method, which push main cleaning balls and auxiliary cleaning balls through flue gas flow in the process of waste heat recovery of flue gas, so that the main cleaning balls and the auxiliary cleaning balls roll in a heat exchange tube in a circulating and continuous mode, the inner wall of the heat exchange tube is continuously cleaned in the waste heat recovery process, flue gas particles attached to the inner wall of the heat exchange tube are cleaned, and when the main cleaning balls and the auxiliary cleaning balls finish one-time cleaning of the heat exchange tube, the processes of self cleaning, dehydration, drying and the like are sequentially realized in the process of returning to the air inlet end of the heat exchange tube, and then the main cleaning balls and the auxiliary cleaning balls enter the heat exchange tube again to clean the heat exchange tube, so that the cleaning effect of the heat exchange tube is further ensured.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A boiler flue gas waste heat recovery device comprises a device shell, wherein a heat exchange tube is arranged inside the device shell, an air inlet tube is fixedly connected to the upper end of the heat exchange tube, the air inlet tube penetrates through the side end of the device shell and extends to the outer side of the device shell, a U-shaped tube is arranged on the lower side of the heat exchange tube, a plurality of guide vertical rods which are uniformly distributed are fixedly connected between one end of the U-shaped tube and the lower end of the heat exchange tube, a return tube is fixedly connected to the other end of the U-shaped tube, the upper end of the return tube is fixedly connected with the outer end of the heat exchange tube, the connection position of the return tube and the heat exchange tube is close to the air inlet tube, a plurality of main cleaning balls and auxiliary cleaning balls are arranged on the inner sides of the heat exchange tube, the guide vertical rods, the U-shaped tube and the return tube, the main cleaning balls and the auxiliary cleaning balls are sequentially distributed at intervals, and an upper partition plate and a lower partition plate are fixedly connected to the inner wall of the device shell, the upper baffle plate is positioned on the upper side of the lower baffle plate, the U-shaped pipe is positioned on the lower side of the lower baffle plate, two end parts of the U-shaped pipe penetrate through the interior of the lower baffle plate and extend to the upper side of the lower baffle plate, the heat exchange pipe and the return pipe are positioned on the upper side of the upper baffle plate, the lower ends of the heat exchange pipe and the return pipe penetrate through the interior of the upper baffle plate and extend to the lower side of the upper baffle plate, the guide vertical rod is positioned between the upper baffle plate and the lower baffle plate, the upper end of the device shell is fixedly connected with a water inlet pipe communicated with the interior of the device shell, the side end of the device shell is fixedly connected with a water outlet pipe and a gas outlet pipe communicated with the interior of the device shell, the water outlet pipe is positioned on the upper side of the upper baffle plate, and the gas outlet pipe is positioned between the upper baffle plate and the lower baffle plate. Realize in the waste heat recovery in-process in step continuously cleaning the heat exchange tube inner wall, the clearance attaches to the flue gas particulate matter on the heat exchange tube inner wall to, once clear up when main clearance ball and vice clearance ball are accomplished the heat exchange tube, get back to the in-process of heat exchange tube inlet end, still realized self in proper order and cleaned, dehydration and process such as drying, clean the heat exchange tube in the reentrant heat exchange tube afterwards, thereby further guaranteed the cleaning performance to the heat exchange tube.
Further, main clearance ball includes the clean shot, a plurality of evenly distributed's through-hole has been seted up on the clean shot, the equal fixedly connected with silica gel layer in inside and outside surface of clean shot is located a plurality of evenly distributed's of outer end fixedly connected with soft brush of silica gel layer in the clean shot outside, when main clearance ball rolled in the heat exchange tube, soft brush can scrub the heat exchange tube inner wall, made the flue gas particulate matter on the heat exchange tube inner wall effectively drop to attached to silica gel layer top layer, taken away by main clearance ball, thereby realized the cleaning process to the heat exchange tube inner wall.
Furthermore, vice clearance ball includes the solid sphere, the surface fixedly connected with cleaning cotton of solid sphere, after the preliminary cleanness of main clearance ball, when vice clearance ball rolled in the heat exchange tube, cleaning cotton can clean the heat exchange tube inner wall, further clears up the residual particulate matter on the heat exchange tube inner wall.
Furthermore, clear water is contained at the inner bottom of the shell of the device, the liquid level of the clear water is lower than the lower end surface of the lower clapboard, a plurality of water through holes which are uniformly distributed are arranged on the U-shaped pipe, a plurality of cleaning brushes which are uniformly distributed are fixedly connected with the inner wall of the U-shaped pipe, the cleaning brush and the limber hole are both positioned inside the clean water, the clean water can enter the inside of the U-shaped pipe through the limber hole, after the main cleaning ball and the auxiliary cleaning ball finish the primary cleaning of the inner wall of the heat exchange pipe, the main cleaning ball and the auxiliary cleaning ball attached with smoke particles roll into the U-shaped pipe along the inner sides of the plurality of guide vertical rods under the pushing of smoke airflow, when the cleaning brush rolls to the position of the limber hole, the cleaning brush can brush the main cleaning ball and the auxiliary cleaning ball, so that smoke particles can effectively fall off from the main cleaning ball and the auxiliary cleaning ball, and is dispersed into water flow, thereby realizing the effective self-cleaning process of the main cleaning ball and the auxiliary cleaning ball.
Further, the inner wall fixedly connected with gasbag of U type pipe, the gasbag is located between cleaning brush and the pipe that rises back, and main clearance ball after the cleaning and vice clearance ball roll to gasbag department gradually under the promotion of flue gas, under the elastic extrusion of gasbag, a large amount of moisture on main clearance ball and the vice clearance ball are extruded, have realized the preliminary dehydration process of main clearance ball and vice clearance ball.
Furthermore, a plurality of vent holes are uniformly distributed on the rising pipe, an inner baffle plate is fixedly connected between the upper baffle plate and the lower baffle plate, a pair of side ends of the inner baffle plate are respectively fixedly connected with a pair of inner walls of the device shell, the inner baffle plate is positioned between the rising pipe and the guide vertical rod, a vent hole is arranged at a side end of the device shell, the vent hole is positioned at a position close to the vent hole, the vent hole and the vent hole are both positioned between the upper baffle plate and the lower baffle plate, the area between the upper baffle plate and the lower baffle plate is divided into two areas by the inner baffle plate, the area where the guide vertical rod is positioned is used for storing cooled smoke, the smoke is conveniently discharged from the air outlet pipe, meanwhile, under the heat transfer action of the inner baffle plate, the heat of the smoke is transferred to the area where the vent hole is positioned through the inner baffle plate, so that the area where the vent hole is also kept at a certain high temperature, when the main cleaning ball and the auxiliary cleaning ball which are dehydrated roll to the vent hole position, under the high temperature effect, remaining moisture is heated to evaporate and loops through air vent and discharge on main clearance ball and the vice clearance ball to realize the drying process of main clearance ball and vice clearance ball, make main clearance ball and vice clearance ball be difficult for bringing moisture into the heat exchange tube, be difficult for influencing the heat transfer process of flue gas.
Further, the side of device shell is fixedly connected with and the inside communicating filler pipe of device shell and the pipe of wasting discharge still, filler pipe and the pipe of wasting discharge all are located the downside of baffle down, and the filler pipe is located the upside of wasting discharge pipe, the equal threaded connection in outer end of filler pipe and wasting discharge pipe has the tube cap, and the filler pipe is used for the joining of clear water, and the wasting discharge pipe is used for the discharge of the waste water after main clearance ball and the clearance of vice ball cleaning.
Furthermore, a plurality of the diameter sum of main clearance ball and a plurality of vice clearance ball is greater than the total length of direction vertical rod, tedge and U type pipe three under the expansion state for at any moment, there are main clearance ball and vice clearance ball all the time and be located the inside of heat exchange tube, thereby conveniently realize flue gas flow to the promotion of main clearance ball and vice clearance ball, make main clearance ball and vice clearance ball continuously keep rolling, realize the clean process that lasts to the heat exchange tube inner wall.
A recovery method of a boiler flue gas waste heat recovery device comprises the following steps:
s1, adding condensed water into the device shell through a water inlet pipe, wherein the condensed water is gathered at the upper side of the upper partition plate and is immersed in the heat exchange pipe, introducing boiler flue gas into the heat exchange pipe through a gas inlet pipe, exchanging heat between the boiler flue gas and the condensed water through the heat exchange pipe, discharging the heated condensed water through a water outlet pipe for utilization, discharging the cooled flue gas from the lower end of the heat exchange pipe, allowing the cooled flue gas to enter a region between the upper partition plate and the lower partition plate where the guide vertical rods are located, and finally discharging the flue gas from a gas outlet pipe;
and S2, in the process of introducing the flue gas, the flue gas flow pushes the main cleaning balls and the auxiliary cleaning balls to roll, so that the main cleaning balls and the auxiliary cleaning balls circulate to continuously clean the inner walls of the heat exchange tubes.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is carrying out the waste heat recovery in-process to the flue gas, promote main clearance ball and vice clearance ball through the flue gas air current, make main clearance ball and vice clearance ball circulation constantly roll in the heat exchange tube inside in turn, realize in the waste heat recovery in-process in step continuously cleaning the heat exchange tube inner wall, the clearance is attached to the flue gas particulate matter on the heat exchange tube inner wall, and, when main clearance ball and vice clearance ball accomplish clearance once to the heat exchange tube, at the in-process of getting back to the heat exchange tube inlet end, self cleanness has still been realized in proper order, processes such as dehydration and drying, it cleans the heat exchange tube to get into in the heat exchange tube once more afterwards, thereby further guaranteed the cleaning effect to the heat exchange tube.
(2) The main clearance ball includes the clean shot, set up a plurality of evenly distributed's through-hole on the clean shot, the equal fixedly connected with silica gel layer of inside and outside surface of clean shot, the soft brush that is located a plurality of evenly distributed of outer end fixedly connected with on the silica gel layer in the clean shot outside, when main clearance ball rolls in the heat exchange tube, the soft brush can be scrubbed the heat exchange tube inner wall, make the flue gas particulate matter on the heat exchange tube inner wall effectively drop, and adhere to on silica gel layer top layer, taken away by main clearance ball, thereby the cleaning process to the heat exchange tube inner wall has been realized.
(3) Vice clearance ball includes the solid sphere, and the surface fixedly connected with of solid sphere is clean cotton, and after the preliminary cleanness of main clearance ball, when vice clearance ball rolled in the heat exchange tube, the clean cotton can be cleaned the heat exchange tube inner wall, further clears up the residual particulate matter on the heat exchange tube inner wall.
(4) Clear water is contained at the inner bottom of the shell of the device, the liquid level of the clear water is lower than the lower end face of the lower partition plate, a plurality of uniformly distributed water through holes are formed in the U-shaped pipe, a plurality of uniformly distributed cleaning brushes are fixedly connected to the inner wall of the U-shaped pipe, the cleaning brushes and the water through holes are both positioned inside the clear water, the clear water can enter the inside of the U-shaped pipe through the water through holes, after the main cleaning ball and the auxiliary cleaning ball finish the primary cleaning of the inner wall of the heat exchange pipe, the main cleaning ball and the auxiliary cleaning ball attached with smoke particles roll into the U-shaped pipe along the inner sides of the plurality of guide vertical rods under the pushing of smoke airflow, when the cleaning brush rolls to the position of the limber hole, the cleaning brush can brush the main cleaning ball and the auxiliary cleaning ball, so that smoke particles can effectively fall off from the main cleaning ball and the auxiliary cleaning ball, and is dispersed into water flow, thereby realizing the effective self-cleaning process of the main cleaning ball and the auxiliary cleaning ball.
(5) The inner wall fixedly connected with gasbag of U type pipe, the gasbag is located between cleaning brush and the tube that rises again, and main clearance ball after the cleaning rolls gradually to gasbag department with vice clearance ball under the flue gas promotes, and under the elastic extrusion of gasbag, a large amount of moisture on main clearance ball and the vice clearance ball is extruded, has realized the preliminary dehydration process of main clearance ball and vice clearance ball.
(6) Divide into two regions through the regional division of interior baffle between with last baffle and the lower baffle, the region at direction vertical rod place is used for storing the flue gas after the cooling, make things convenient for the flue gas to discharge from the outlet duct, and simultaneously, under the heat transfer effect of interior baffle, the heat of flue gas passes through the region at interior baffle transmission to air vent place, make the air vent place region also keep certain high temperature, when main clearance ball after the dehydration and vice clearance ball roll to the air vent position, under the high temperature effect, remaining moisture is heated the evaporation and loops through air vent and discharge on main clearance ball and the vice clearance ball, thereby realize the drying process of main clearance ball and vice clearance ball, make main clearance ball and vice clearance ball be difficult for bringing moisture into the heat exchange tube, be difficult for influencing the heat transfer process of flue gas.
(7) The diameter sum of a plurality of main clearance balls and a plurality of vice clearance balls is greater than the total length of direction vertical bar, tedge and U type pipe three under the expansion state for at any moment, there are main clearance ball and vice clearance ball all the time and be located the inside of heat exchange tube, thereby conveniently realize flue gas flow to the promotion of main clearance ball and vice clearance ball, make main clearance ball and vice clearance ball continuously keep rolling, realize the cleaning process that lasts to the heat exchange tube inner wall.
Drawings
FIG. 1 is a first schematic diagram of the front structure of the present invention;
FIG. 2 is a perspective view of the guide vertical bar junction of the present invention;
FIG. 3 is a schematic diagram of the front structure of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic view of the structure at B in FIG. 3;
FIG. 6 is a schematic front view of the main cleaning ball of the present invention;
FIG. 7 is a schematic front view of the secondary cleaning ball of the present invention.
The reference numbers in the figures illustrate:
the device comprises a device shell 1, a heat exchange tube 2, a guide vertical rod 3, a U-shaped tube 4, a water through hole 401, a rising tube 5, a vent hole 501, a main cleaning ball 6, a hollow ball 61, a silica gel layer 62, a soft brush 63, a through hole 64, an auxiliary cleaning ball 7, a solid ball 71, cleaning cotton 72, an upper partition plate 8, a lower partition plate 9, an inner partition plate 10, an air inlet tube 11, an air inlet tube 12, a water outlet tube 13, an air outlet tube 14, a water adding tube 15, a waste discharge tube 16, a vent hole 17, a cleaning brush 18 and an air bag 19.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1, a boiler flue gas waste heat recovery device comprises a device shell 1, a heat exchange tube 2 is arranged inside the device shell 1, an air inlet tube 11 is fixedly connected to the upper end of the heat exchange tube 2, the air inlet tube 11 penetrates through the side end of the device shell 1 and extends to the outer side of the device shell 1, a U-shaped tube 4 is arranged on the lower side of the heat exchange tube 2, referring to fig. 1 and 2, a plurality of uniformly distributed guide vertical rods 3 are fixedly connected between one end of the U-shaped tube 4 and the lower end of the heat exchange tube 2, the other end of the U-shaped tube 4 is fixedly connected with a riser tube 5, the upper end of the riser tube 5 is fixedly connected with the outer end of the heat exchange tube 2, the joint of the riser tube 5 and the heat exchange tube 2 is located at a position close to the air inlet tube 11, a plurality of main cleaning balls 6 and auxiliary cleaning balls 7 are arranged on the inner sides of the heat exchange tube 2, the guide vertical rods 3, the U-shaped tube 4 and the riser tube 5, and the plurality of main cleaning balls 6 and the auxiliary cleaning balls 7 are distributed at intervals in sequence, the inner wall fixedly connected with of device shell 1 goes up baffle 8 and lower baffle 9, it is located the upside of baffle 9 down to go up baffle 8, U type pipe 4 is located the downside of baffle 9 down, the both ends of U type pipe 4 all run through the inside of baffle 9 down and extend to the upside of baffle 9 down, heat exchange tube 2 and tedge 5 all are located the upside of baffle 8, and the lower extreme of heat exchange tube 2 and tedge 5 all runs through the inside of baffle 8 and extends to the downside of baffle 8 down, direction vertical bar 3 is located between baffle 8 and lower baffle 9, the upper end fixedly connected with of device shell 1 and the inside communicating inlet tube 12 of device shell 1, the side fixedly connected with of device shell 1 and the inside communicating outlet pipe 13 and the outlet duct 14 of communicating, outlet pipe 13 is located the upside of baffle 8, outlet duct 14 is located between baffle 8 and lower baffle 9.
Referring to fig. 3 and 4, clear water is contained at the inner bottom of the device housing 1, the liquid level of the clear water is lower than the lower end face of the lower partition plate 9, a plurality of evenly distributed water through holes 401 are formed in the U-shaped tube 4, a plurality of evenly distributed cleaning brushes 18 are fixedly connected to the inner wall of the U-shaped tube 4, the cleaning brushes 18 and the water through holes 401 are both located inside the clear water, a water adding tube 15 and a waste discharging tube 16 which are communicated with the inside of the device housing 1 are also fixedly connected to the side end of the device housing 1, the water adding tube 15 and the waste discharging tube 16 are both located at the lower side of the lower partition plate 9, the water adding tube 15 is located at the upper side of the waste discharging tube 16, the outer ends of the water adding tube 15 and the waste discharging tube 16 are both in threaded connection with tube caps, the water adding tube 15 is used for adding the clear water, the waste discharging tube 16 is used for discharging the waste water after the main cleaning ball 6 and the auxiliary cleaning ball 7 are cleaned, the clear water can enter the inside of the U-shaped tube 4 through the water through holes 401, when the main cleaning ball 6 and the auxiliary cleaning ball 7 complete one-time cleaning of the inner wall of the heat exchanging tube 2, the main cleaning ball 6 and the auxiliary cleaning ball 7 attached with the flue gas particles roll into the U-shaped pipe 4 along the inner sides of the plurality of guide vertical rods 3 under the pushing of flue gas flow, when the main cleaning ball and the auxiliary cleaning ball roll to the position of the limber hole 401, the cleaning brush 18 can brush the main cleaning ball 6 and the auxiliary cleaning ball 7, so that the flue gas particles can effectively fall off from the main cleaning ball 6 and the auxiliary cleaning ball 7 and are scattered into water flow, and the effective self-cleaning process of the main cleaning ball 6 and the auxiliary cleaning ball 7 is realized.
Referring to fig. 3 and 5, an air bag 19 is fixedly connected to the inner wall of the U-shaped pipe 4, the air bag 19 is located between the cleaning brush 18 and the lifting pipe 5, the cleaned main cleaning ball 6 and the cleaned auxiliary cleaning ball 7 gradually roll to the air bag 19 under the pushing of smoke, and a large amount of moisture on the main cleaning ball 6 and the auxiliary cleaning ball 7 is squeezed out under the elastic squeezing of the air bag 19, so that the preliminary dehydration process of the main cleaning ball 6 and the auxiliary cleaning ball 7 is realized.
Referring to fig. 3, a plurality of vent holes 501 are uniformly distributed on the rising pipe 5, an inner partition plate 10 is fixedly connected between the upper partition plate 8 and the lower partition plate 9, a pair of side ends of the inner partition plate 10 are respectively fixedly connected with a pair of inner walls of the device housing 1, the inner partition plate 10 is located between the rising pipe 5 and the guide vertical rod 3, a vent hole 17 is formed in a side end of the device housing 1, the vent hole 17 is located at a position close to the vent hole 501, the vent hole 501 and the vent hole 17 are both located between the upper partition plate 8 and the lower partition plate 9, the area between the upper partition plate 8 and the lower partition plate 9 is divided into two areas by the inner partition plate 10, the area where the guide vertical rod 3 is located is used for storing cooled flue gas, so that the flue gas can be conveniently discharged from the gas outlet pipe 14, meanwhile, under the heat transfer effect of the inner partition plate 10, the heat of the flue gas is transferred to the area where the vent hole 501 is located, so that the area where the vent hole 501 is also kept at a certain high temperature, when main clearance ball 6 after the dehydration and vice clearance ball 7 roll to air vent 501 position, under the high temperature effect, remaining moisture on main clearance ball 6 and the vice clearance ball 7 is heated the evaporation and loops through air vent 501 and vent 17 and discharge to realize the drying process of main clearance ball 6 and vice clearance ball 7, make main clearance ball 6 and vice clearance ball 7 be difficult for bringing moisture into heat exchange tube 2, be difficult for influencing the heat transfer process of flue gas.
Referring to fig. 6, the main cleaning ball 6 includes a hollow ball 61, a plurality of through holes 64 are uniformly distributed on the hollow ball 61, a silica gel layer 62 is fixedly connected to the inner and outer surfaces of the hollow ball 61, a plurality of soft brushes 63 are uniformly distributed at the outer end of the silica gel layer 62 positioned outside the hollow ball 61, when the main cleaning ball 6 rolls in the heat exchange tube 2, the soft brushes 63 can scrub the inner wall of the heat exchange tube 2, so that smoke particles on the inner wall of the heat exchange tube 2 can effectively fall off and adhere to the surface layer of the silica gel layer 62 and are taken away by the main cleaning ball 6, thereby realizing the cleaning process of the inner wall of the heat exchange tube 2, referring to fig. 7, the auxiliary cleaning ball 7 includes a solid ball 71, the outer surface of the solid ball 71 is fixedly connected with cleaning cotton 72, after the main cleaning ball 6 is cleaned, when the auxiliary cleaning ball 7 rolls in the heat exchange tube 2, the cleaning cotton 72 can wipe the inner wall of the heat exchange tube 2, further cleaning the residual particles on the inner wall of the heat exchange tube 2.
Referring to fig. 1 and 3, the sum of the diameters of the main cleaning balls 6 and the auxiliary cleaning balls 7 is greater than the total length of the guide vertical rod 3, the return lifting pipe 5 and the U-shaped pipe 4 in the expanded state, so that the main cleaning balls 6 and the auxiliary cleaning balls 7 are always located inside the heat exchange pipe 2 at any time, the main cleaning balls 6 and the auxiliary cleaning balls 7 are conveniently pushed by flue gas flow, the main cleaning balls 6 and the auxiliary cleaning balls 7 continuously roll, and the continuous cleaning process of the inner wall of the heat exchange pipe 2 is realized.
A recovery method of a boiler flue gas waste heat recovery device comprises the following steps:
s1, adding condensed water into the device shell 1 through a water inlet pipe 12, wherein the condensed water is gathered at the upper side of the upper partition plate 8 and is immersed in the heat exchange pipe 2, introducing boiler flue gas into the heat exchange pipe 2 through a gas inlet pipe 11, exchanging heat between the boiler flue gas and the condensed water through the heat exchange pipe 2, discharging the heated condensed water through a water outlet pipe 13 for utilization, discharging the cooled flue gas from the lower end of the heat exchange pipe 2, entering a region between the upper partition plate 8 and the lower partition plate 9 where the guide vertical rod 3 is located, and finally discharging the cooled flue gas from a gas outlet pipe 14;
s2, in the process of introducing the flue gas, the flue gas flow pushes the main cleaning balls 6 and the auxiliary cleaning balls 7 to roll, so that the main cleaning balls 6 and the auxiliary cleaning balls 7 circulate to continuously clean the inner walls of the heat exchange tube 2.
In the process of recovering the waste heat of the flue gas, the flue gas flow pushes the main cleaning balls 6 and the auxiliary cleaning balls 7 to ensure that the main cleaning balls 6 and the auxiliary cleaning balls 7 roll in the heat exchange tube 2 in turn in a circulating manner, the inner wall of the heat exchange tube 2 is continuously cleaned in the process of recovering the waste heat, flue gas particles attached to the inner wall of the heat exchange tube 2 are cleaned, and when the main cleaning balls 6 and the auxiliary cleaning balls 7 finish one-time cleaning of the heat exchange tube 2, the processes of self cleaning, dehydration, drying and the like are also sequentially realized in the process of returning to the air inlet end of the heat exchange tube 2, and then the heat exchange tube 2 is cleaned in the heat exchange tube 2 again, so that the cleaning effect of the heat exchange tube 2 is further ensured.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a boiler flue gas waste heat recovery device, includes device shell (1), the inside of device shell (1) is equipped with heat exchange tube (2), the upper end fixedly connected with intake pipe (11) of heat exchange tube (2), intake pipe (11) run through the side of device shell (1) and extend to the outside of device shell (1), its characterized in that: the heat exchange tube is characterized in that a U-shaped tube (4) is arranged on the lower side of the heat exchange tube (2), a plurality of guide vertical rods (3) which are uniformly distributed are fixedly connected between one end of the U-shaped tube (4) and the lower end of the heat exchange tube (2), a return tube (5) is fixedly connected to the other end of the U-shaped tube (4), the upper end of the return tube (5) is fixedly connected with the outer end of the heat exchange tube (2), the connection position of the return tube (5) and the heat exchange tube (2) is close to an air inlet tube (11), a plurality of main cleaning balls (6) and auxiliary cleaning balls (7) are arranged on the inner sides of the heat exchange tube (2), the guide vertical rods (3), the U-shaped tube (4) and the return tube (5), the main cleaning balls (6) and the auxiliary cleaning balls (7) are sequentially distributed at intervals, and an upper partition plate (8) and a lower partition plate (9) are fixedly connected to the inner wall of the device shell (1), the upper baffle plate (8) is positioned on the upper side of the lower baffle plate (9), the U-shaped pipe (4) is positioned on the lower side of the lower baffle plate (9), two end parts of the U-shaped pipe (4) penetrate through the inside of the lower baffle plate (9) and extend to the upper side of the lower baffle plate (9), the heat exchange pipe (2) and the return pipe (5) are positioned on the upper side of the upper baffle plate (8), the lower ends of the heat exchange pipe (2) and the return pipe (5) penetrate through the inside of the upper baffle plate (8) and extend to the lower side of the upper baffle plate (8), the guide vertical rod (3) is positioned between the upper baffle plate (8) and the lower baffle plate (9), the upper end of the device shell (1) is fixedly connected with a water inlet pipe (12) communicated with the inside of the device shell (1), and the side end of the device shell (1) is fixedly connected with a water outlet pipe (13) and a gas outlet pipe (14) communicated with the inside of the device shell (1), the water outlet pipe (13) is positioned on the upper side of the upper partition plate (8), and the air outlet pipe (14) is positioned between the upper partition plate (8) and the lower partition plate (9); clear water is contained at the inner bottom of the device shell (1), the clear water liquid level is lower than the lower end face of the lower partition plate (9), a plurality of evenly distributed limbers (401) are arranged on the U-shaped pipe (4), a plurality of evenly distributed cleaning brushes (18) are fixedly connected to the inner wall of the U-shaped pipe (4), the cleaning brushes (18) and the limbers (401) are both located in the clear water, and the diameter sum of the main cleaning balls (6) and the auxiliary cleaning balls (7) is larger than the total length of the guide vertical rod (3), the return pipe (5) and the U-shaped pipe (4) in the unfolded state.
2. The boiler flue gas waste heat recovery device according to claim 1, characterized in that: the main cleaning ball (6) comprises a hollow ball (61), a plurality of uniformly distributed through holes (64) are formed in the hollow ball (61), a silica gel layer (62) is fixedly connected to the inner surface and the outer surface of the hollow ball (61), and a plurality of uniformly distributed soft brushes (63) are fixedly connected to the outer end of the silica gel layer (62) on the outer side of the hollow ball (61).
3. The boiler flue gas waste heat recovery device according to claim 1, characterized in that: the auxiliary cleaning ball (7) comprises a solid ball (71), and cleaning cotton (72) is fixedly connected to the outer surface of the solid ball (71).
4. The boiler flue gas waste heat recovery device according to claim 3, characterized in that: the inner wall of the U-shaped pipe (4) is fixedly connected with an air bag (19), and the air bag (19) is positioned between the cleaning brush (18) and the lifting pipe (5).
5. The boiler flue gas waste heat recovery device according to claim 1, characterized in that: the air return pipe is characterized in that a plurality of vent holes (501) are uniformly distributed on the air return pipe (5), an inner partition plate (10) is fixedly connected between the upper partition plate (8) and the lower partition plate (9), a pair of side ends of the inner partition plate (10) are fixedly connected with a pair of inner walls of the device shell (1) respectively, the inner partition plate (10) is located between the air return pipe (5) and the guide vertical rods (3), a vent hole (17) is formed in the side end of the device shell (1), the vent hole (17) is located at a position close to the vent holes (501), and the vent holes (501) and the vent hole (17) are located between the upper partition plate (8) and the lower partition plate (9).
6. The boiler flue gas waste heat recovery device according to claim 1, characterized in that: the side of device shell (1) is fixedly connected with and device shell (1) inside communicating filler pipe (15) and row's waste pipe (16) still, filler pipe (15) and row's waste pipe (16) all are located the downside of lower baffle (9), and filler pipe (15) are located the upside of arranging waste pipe (16), the equal threaded connection in outer end of filler pipe (15) and row's waste pipe (16) has the tube cap.
7. The recovery method of the boiler flue gas waste heat recovery device according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
s1, condensed water is added into the device shell (1) through a water inlet pipe (12), the condensed water is gathered on the upper side of the upper partition plate (8) and is immersed in the heat exchange pipe (2), boiler flue gas is introduced into the heat exchange pipe (2) through an air inlet pipe (11), the boiler flue gas exchanges heat with the condensed water through the heat exchange pipe (2), the heated condensed water is discharged and utilized through a water outlet pipe (13), the cooled flue gas is discharged from the lower end of the heat exchange pipe (2), enters a region between the upper partition plate (8) and the lower partition plate (9) where the guide vertical rod (3) is located, and is finally discharged from an air outlet pipe (14);
s2, in the process of introducing the flue gas, the flue gas flow pushes the main cleaning balls (6) and the auxiliary cleaning balls (7) to roll, so that the main cleaning balls (6) and the auxiliary cleaning balls (7) circulate to continuously clean the inner wall of the heat exchange pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010648126.5A CN111765782B (en) | 2020-07-07 | 2020-07-07 | Boiler flue gas waste heat recovery device and recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010648126.5A CN111765782B (en) | 2020-07-07 | 2020-07-07 | Boiler flue gas waste heat recovery device and recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111765782A CN111765782A (en) | 2020-10-13 |
| CN111765782B true CN111765782B (en) | 2021-09-07 |
Family
ID=72725481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010648126.5A Active CN111765782B (en) | 2020-07-07 | 2020-07-07 | Boiler flue gas waste heat recovery device and recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111765782B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321008A (en) * | 2020-10-21 | 2021-02-05 | 恒河材料科技股份有限公司 | Sewage settling equipment for petrochemical production |
| CN113048827A (en) * | 2021-01-03 | 2021-06-29 | 温州捷合郸科技有限公司 | Backflow impact type self-cleaning flue gas heat exchange tube |
| CN116066844A (en) * | 2022-12-30 | 2023-05-05 | 南通常安能源有限公司 | Boiler flue gas heat exchange device based on high back pressure of steam turbine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL79885A0 (en) * | 1986-08-29 | 1986-11-30 | Chaim Ben Dosa | Cleaning system for fluids-conducting tubing |
| KR200227922Y1 (en) * | 2000-12-29 | 2001-06-15 | 김영호 | A cleaning apparatus of fluid transport pipe in a condenser |
| CN205403580U (en) * | 2016-02-24 | 2016-07-27 | 青岛海博环保设备有限公司 | Full automatic on -line belt cleaning device |
| KR101858718B1 (en) * | 2018-02-08 | 2018-05-16 | 정우산기 주식회사 | Ball Size Monitoring System |
| CN209570069U (en) * | 2018-12-29 | 2019-11-01 | 浙江浙能希科姆科技有限公司 | It is a kind of for cleaning the ball cleaning apparatus of thermal power plant's condenser tube |
| CN210135834U (en) * | 2019-06-29 | 2020-03-10 | 大唐东营发电有限公司 | Heat exchanger for power plant |
| CN210664116U (en) * | 2019-07-09 | 2020-06-02 | 深圳市勤达富流体机电设备有限公司 | Cleaning ball with brush hair on surface |
-
2020
- 2020-07-07 CN CN202010648126.5A patent/CN111765782B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111765782A (en) | 2020-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111765782B (en) | Boiler flue gas waste heat recovery device and recovery method | |
| CN109395882B (en) | Dust removal heat transfer white equipment and system that disappears | |
| CN112611236B (en) | Square counter-flow cooling tower | |
| CN108731012A (en) | A kind of device and method eliminated for the wet plume in coal-burning power plant | |
| CN110726148A (en) | Smoke white-eliminating cooling device | |
| CN206793292U (en) | A kind of open type lift heat exchange water-dust removing apparatus and system | |
| CN204593336U (en) | A kind of New-type boiler waste-heat recovery device | |
| CN105483965A (en) | Waste gas heat recovery and purification device for setter | |
| CN206846778U (en) | A kind of air preheater | |
| CN210602848U (en) | Recovery device of flue gas waste heat exchanger | |
| CN209049193U (en) | Steam-heated white plume governing system is condensed again based on fluorine plastic-steel | |
| CN111811298A (en) | Desulfurization tail gas waste heat recovery device | |
| CN204240650U (en) | Spiral cooling grid | |
| CN208750751U (en) | A kind of desulfurization fume disappears white system | |
| CN203639490U (en) | High-temperature smoke residual heat recycling device | |
| CN216591793U (en) | Novel environment-friendly efficient air preheater | |
| CN216244999U (en) | Quick heat dissipation device for vertical condenser | |
| CN201600054U (en) | Heat exchange device with insert tubes inside | |
| CN214319731U (en) | High-temperature kiln waste heat recovery device | |
| CN104713065A (en) | Novel boiler waste heat recycling device | |
| CN208269690U (en) | A kind of efficient cooling tower of formula easy to clean | |
| CN2856912Y (en) | Dust removing heat pipe heat exchanger | |
| CN210410170U (en) | Process system suitable for wet desulphurization and white smoke elimination of northern air cooling unit | |
| CN209333473U (en) | A kind of governing system of desulfurization fume white cigarette | |
| CN207163257U (en) | One kind evaporation cooling decoupling type heat-exchanger rig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210818 Address after: 610000 Henghong Metal Technology Co., Ltd., group 8, Yanghe village, Sanhe Town, Jiangyou City, Mianyang City, Sichuan Province Applicant after: SICHUAN LU HENG ENERGY TECHNOLOGY Co.,Ltd. Address before: 510000 No. 19, Shiqiao bustling road, Panyu District, Guangzhou City, Guangdong Province Applicant before: Zhang Xianan |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A kind of boiler flue gas waste heat recovery device and recovery method Effective date of registration: 20221215 Granted publication date: 20210907 Pledgee: Bank of China Limited Jiangyou Sub branch Pledgor: SICHUAN LU HENG ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2022980027683 |