CN212006774U - Micro-cyclone flue gas waste heat utilization device for sulfur furnace flue gas whitening elimination - Google Patents
Micro-cyclone flue gas waste heat utilization device for sulfur furnace flue gas whitening elimination Download PDFInfo
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- CN212006774U CN212006774U CN201922302475.7U CN201922302475U CN212006774U CN 212006774 U CN212006774 U CN 212006774U CN 201922302475 U CN201922302475 U CN 201922302475U CN 212006774 U CN212006774 U CN 212006774U
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Abstract
The utility model provides a little whirl flue gas waste heat utilization equipment for sulphur stove flue gas disappears is white, the device includes the heat exchanger, the heat exchanger includes heat absorption section and heat release section, the heat absorption section is installed the afterbody of the flue of sulphur stove, heat release section installs in the wind channel, the flue gas passes through the heat absorption section and heats the medium in the heat absorption section, the medium gets into in the heat release section after the flue gas heating in the heat absorption section, the medium that heat release was accomplished in heat release section flows back to the heat absorption section, the air through the wind channel is heated after passing through the heat release section, the air after the heating is sneaked in the tail gas of sulphur stove is used for eliminating white cigarette; the medium is capable of forming a micro-swirl flow as it flows within both the heat absorbing section and the heat releasing section. The waste heat recovery of the flue gas by adopting the micro-cyclone flue gas waste heat utilization technology reduces the outlet smoke exhaust temperature of the tail heat exchanger, and the recovered waste heat is utilized to heat air, and the heated air is mixed into the tail gas to eliminate white smoke.
Description
Technical Field
The utility model relates to the technical field of energy conservation, in particular to a little whirl flue gas waste heat utilization equipment that is used for sulphur stove flue gas to disappear white.
Background
At present, the exhaust temperature of a chemical sulfur furnace is generally overhigh, the temperature of tail gas generated after flue gas is desulfurized is overlow, the tail gas contains water vapor, and the water vapor is discharged along with the flue gas and has the phenomenon of emitting white smoke, which is commonly called as small white dragon, so that the thermal efficiency of the chemical sulfur furnace is low and the chemical sulfur furnace is not environment-friendly.
In order to improve the thermal efficiency of the chemical sulfur furnace and eliminate the phenomenon that the tail gas emits white smoke, so that the tail gas meets the environmental protection requirement, a micro-cyclone flue gas waste heat utilization device for the sulfur furnace flue gas white elimination is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a little whirl flue gas waste heat utilization equipment for sulphur stove flue gas disappears white, sulphur stove recovery unit export flue gas temperature is higher, adopts little whirl flue gas waste heat utilization technique to retrieve the waste heat of sulphur stove recovery unit export flue gas to utilize the waste heat heating air of retrieving, the air of heating sneaks into and is used for eliminating "little white dragon" (white cigarette) phenomenon in the tail gas.
In order to achieve the above object, the present invention provides the following technical solutions:
a micro-cyclone flue gas waste heat utilization device for sulfur furnace flue gas whitening is disclosed, the device can utilize the waste heat of flue gas in a sulfur furnace flue to heat air, the device comprises a heat exchanger, the heat exchanger comprises a heat absorption section and a heat release section, the height of the heat release section is higher than that of the heat absorption section, and the peripheries of pipe cavities of the heat absorption section and the heat release section are respectively provided with an annular fin; the heat absorption section is arranged at the tail part of a flue of the sulfur furnace, the heat release section is arranged in an air duct, smoke passes through the heat absorption section and heats a medium in the heat absorption section, the medium is heated by the smoke in the heat absorption section and then enters the heat release section, the medium after heat release in the heat release section flows back to the heat absorption section, air passing through the air duct is heated after passing through the heat release section, and the heated air is mixed with tail gas of the sulfur furnace to eliminate white smoke; the medium is capable of forming a micro-swirl flow as it flows within both the heat absorbing section and the heat releasing section.
Further, in the above device, the device further comprises a saturated steam communicating pipe and a condensed water self-return pipe; the medium heated by the flue gas enters the heat release section through the saturated steam communicating pipe, and the medium subjected to heat release in the heat release section flows back to the heat absorption section from the return pipe through the condensed water; a gate valve is arranged on the saturated steam communicating pipe and is connected with a safety valve to discharge the steam; the medium is demineralized water.
Further, in the above device, the heat absorbing section and the heat releasing section are both composed of a plurality of heat exchanging units which are vertically parallel and arranged at intervals, the heat exchanging units in the heat absorbing section are arranged perpendicular to the flowing direction of the flue gas, and the heat exchanging units in the heat releasing section are arranged perpendicular to the flowing direction of the air passing through the air duct.
Further, in the above apparatus, the heat exchange unit includes an upper main tube bundle, a lower main tube bundle, and a plurality of branch tube bundles communicating the upper main tube bundle and the lower main tube bundle, the upper main tube bundles of the heat exchange units in the heat absorption section are all communicated with one end of the saturated vapor communication tube through a first header tube, and the upper main tube bundles of the heat exchange units in the heat release section are all communicated with the other end of the saturated vapor communication tube through a second header tube;
the lower main tube bundles of the heat exchange units of the heat absorption section are communicated with one end of the condensed water self-return tube through a third header tube, and the lower main tube bundles of the heat exchange units of the heat release section are communicated with the other end of the condensed water self-return tube through a fourth header tube;
a lining perforated pipe is sleeved in the branch pipe bundle, two ends of the lining perforated pipe are welded with two ends of the branch pipe bundle, and through holes are distributed on the pipe wall of the lining perforated pipe and are arranged in a rotating manner;
every the periphery of tributary tube bank has all cup jointed a plurality of annular fins along tributary tube bank's length direction in proper order, be provided with on the annular fin a plurality of by annular fin's top to tributary tube bank's surface extension's slot.
Further, in the above apparatus, the tributary tube bundle has an outer diameter of 38 mm; the outer diameter of the lining perforated pipe is 32mm, the diameter of the through holes is 14mm or 16mm, and the through holes are arranged in a spiral mode.
Further, in the above device, the condensate water self-return pipe includes a horizontal section and a vertical section, the upper end of the vertical section is connected to the heat releasing section, the lower end of the vertical section is connected to one end of the horizontal section, and the other end of the horizontal section is connected to the heat absorbing section.
Further, in the above device, the device further includes a drainage trench, the drainage trench is communicated with the horizontal section through a pipeline, the pipeline is provided with a stop valve, the stop valve is used for adjusting the flow of the condensed water entering the heat absorption section from the medium in the return pipe, so as to control the temperature of the wall surface of the heating surface of the heat absorption section to be above the acid dew point temperature of the fuel in the boiler, and the two stop valves are sequentially communicated.
Further, in the above device, the device further comprises a medium inlet pipe, the medium inlet pipe is communicated with the condensate water self-return pipe, a water injection meter is arranged on the medium inlet pipe, and two sides of the water injection meter are respectively provided with a ball valve.
Further, in the above device, the vertical section includes three branch pipes and a main pipe, the heat release section is communicated with the upper ends of the three branch pipes, the lower ends of the three branch pipes are communicated with the upper end of the main pipe after being gathered, the lower end of the main pipe is communicated with the horizontal section, and each branch pipe is provided with an adjusting valve.
Further, in the above device, the flue further includes a diffusion section and a contraction section, the diffusion section and the contraction section are respectively disposed on two sides of the heat absorption section, and the flue gas sequentially passes through the diffusion section, the heat absorption section and the contraction section.
The analysis can know, the utility model discloses a little whirl flue gas waste heat utilization equipment for sulphur stove flue gas disappears white adopts the waste heat recovery of little whirl flue gas waste heat utilization technique flue gas, has reduced the export exhaust gas temperature of afterbody heat exchanger to utilize the waste heat heating air of retrieving, the air of heating is sneak into and is used for eliminating white cigarette in the tail gas.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a heat exchange unit according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of a liner perforated pipe according to an embodiment of the present invention.
Description of reference numerals: the system comprises a heat absorption section 1, a saturated steam communicating pipe 2, a heat release section 3, a condensate water self-return pipe 4, a horizontal section 5, a vertical section 6, a flue 7, an air duct 8, a gate valve 9, a safety valve 10, a steam exhaust 11, a trench 12, a stop valve 13, a medium inlet pipe 14, a water injection water meter 15, a ball valve 16, a diffusion section 17 and a contraction section 18; 19 regulating valve; 20, a main tube bundle; 21 a lower main tube bundle; 22 tributary tube bundles; 23 a first header pipe; 24 a second header pipe; 25 a third header pipe; 26 a fourth header pipe; 27 lining a perforated pipe; 28 through holes.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense, and may be, for example, either fixedly connected or detachably connected; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1 to 3, according to the embodiment of the utility model, a little whirl flue gas waste heat utilization equipment for sulphur stove flue gas disappears is provided, the device can utilize the waste heat of flue gas in 7 of sulphur stove to heat the air, the air that is heated sneaks into and disappears in the tail gas through desulfurization treatment (eliminates white cigarette), the device includes the heat exchanger, the heat exchanger includes heat absorption section 1 and heat release section 3, heat release section 3 highly is higher than heat absorption section 1's height. Preferably, the height of the heat release section 3 is more than 1 meter higher than that of the heat absorption section, the peripheries of the tube cavities of the heat absorption section 1 and the heat release section 3 are respectively provided with an annular fin, the heat absorption section 1 is arranged at the tail part of a flue 7 of the sulfur furnace, the heat release section 3 is arranged in an air duct 8, the flue gas passes through the heat absorption section 1 and heats a medium in the heat absorption section 1, the medium is heated by the flue gas in the heat absorption section 1 and then enters the heat release section 3, the medium after heat release in the heat release section 3 flows back to the heat absorption section 1, the air is heated after passing through the heat release section 3, and the heated air is mixed into the tail gas of the. The medium can form micro-rotational flow when flowing in the heat absorption section 1 and the heat release section 3.
Furthermore, the device also comprises a saturated steam communicating pipe 2 and a condensate water self-return pipe 4, a medium heated by the flue gas enters the heat release section 3 through the saturated steam communicating pipe 2, and the medium subjected to heat release in the heat release section 3 flows back to the heat absorption section 1 through the condensate water self-return pipe 4; the saturated steam communicating pipe 2 is provided with a gate valve 9, the gate valve 9 is communicated with the exhaust steam 11 after being connected with the safety valve 10, the gate valve 9 is in a normally open state, and the safety valve 10 can be conveniently maintained and replaced by closing the gate valve 9. When the pressure of the saturated steam communicating pipe 2 rises to a preset value, the safety valve 10 is automatically opened to release the pressure, and the saturated steam in the saturated steam communicating pipe 2 is discharged through the exhaust steam 11, so that the pressure of the saturated steam communicating pipe 2 is prevented from continuously rising. When the pressure in the saturated steam communicating pipe 2 is reduced to a specified value, the safety valve 10 is automatically closed in time, and the medium in the saturated steam communicating pipe 2 is prevented from being greatly lost. Preferably, the medium circulating in the closed loop formed by the heat absorption section 1, the saturated steam communicating pipe 2, the heat release section 3 and the condensed water self-return pipe 4 is water subjected to desalination treatment. Preferably, the diameter of the flow passage of the saturated vapor communicating tube 2 and the condensed water self-return tube 4 is 25mm, and the setting pressure is 1.2 MPa.
Furthermore, the heat absorption section 1 and the heat release section 3 are both composed of a plurality of heat exchange units which are vertically parallel and arranged at intervals, the heat exchange units in the heat absorption section 1 are arranged perpendicular to the flowing direction of the flue gas, and the heat exchange units in the heat release section 3 are arranged perpendicular to the flowing direction of the air passing through the air duct 8; as shown in fig. 2, the heat exchange units include an upper main tube bundle 20, a lower main tube bundle 21, and a plurality of branch tube bundles 22 communicating the upper main tube bundle 20 and the lower main tube bundle 21, the branch tube bundles 22 are perpendicular to the upper main tube bundle 20 and the lower main tube bundle 21, the upper main tube bundles 20 of the plurality of heat exchange units of the heat absorption section 1 are all communicated with one end of the saturated vapor communication tube 2 through a first header tube 23, and the upper main tube bundles 20 of the plurality of heat exchange units of the heat release section 3 are all communicated with the other end of the saturated vapor communication tube 2 through a second header tube 24; the lower main tube bundles 21 of the heat exchange units of the heat absorption section 1 are communicated with one end of the condensate water self-return tube 4 through a third header tube 25, and the lower main tube bundles 21 of the heat exchange units of the heat release section 3 are communicated with the other end of the condensate water self-return tube 4 through a fourth header tube 26; set up in tributary tube bank 22 and be equipped with inside lining perforated pipe 27, inside lining perforated pipe 27's outer wall pastes in tributary tube bank 22's inner wall, and welded fastening is passed through with tributary tube bank 22's both ends at inside lining perforated pipe 27's both ends. As shown in fig. 3, the wall of the lining perforated pipe 27 is covered with through holes 28, the through holes 28 are arranged in a rotating manner, specifically, a plurality of parallel and spaced through hole sets are arranged on the lining perforated pipe 27 along the axial direction of the lining perforated pipe 27, each through hole set comprises a plurality of through holes 28 uniformly distributed on the lining perforated pipe 27 along the circumferential direction of the lining perforated pipe 27, that is, on the side wall development of the lining perforated pipe 27, the plurality of through holes 28 are arranged in an array manner. The centers of all the through holes 28 are located on the spiral line, so that the medium can form micro-rotational flow when flowing in the branch pipe bundle 22. So set up and to increase the heat exchange area of medium and interior pipe wall, effectively increase heat exchange efficiency, the heat transfer effect increases by a wide margin.
Further, the outer diameter of the branch pipe bundle 22 is 38mm, the wall thickness is generally 3.5mm, the outer diameter of the lining perforated pipe 27 is 32mm, the wall thickness is about 3mm, the diameter of the through hole 28 is 14mm, 15mm or 16mm, the arrangement of the through holes 28 is staggered, for example, the through holes 28 are divided into a plurality of rows along the circumferential direction of the lining perforated pipe 27, and the through holes 28 in two adjacent rows are not on the cross section of the same lining perforated pipe 27. The arrangement can enable the medium to generate micro-swirling flow when flowing in the branch pipe bundle 22, and further enable the branch pipe bundle 22 to have better heat transfer enhancement effect.
In the process that the medium flows in the branch pipe bundle 22, under the effect of the lining perforated pipe 27, the medium forms a plurality of vortexes with different sizes in the lining perforated pipe 27, and then forms a micro-vortex, so that the turbulent flow property is achieved, the heat exchange efficiency is effectively increased, and the heat transfer effect is greatly increased.
In order to increase the heat transfer effect, a plurality of convex teeth are arranged on the inner pipe wall of the lining perforated pipe 27, each convex tooth comprises a plurality of convex parts, a through hole 28 is formed between every two adjacent convex parts, the convex teeth are distributed spirally along the pipe wall, and a groove is formed between every two adjacent convex teeth. The teeth and grooves together form a thread on the inner pipe wall of the lining perforated pipe 27, so that the medium can also form a swirling flow when flowing in the lining perforated pipe 27. So set up and to increase the heat exchange area of medium and interior pipe wall, effectively increase heat exchange efficiency, the heat transfer effect increases by a wide margin.
The periphery of each branch pipe bundle 22 is sequentially sleeved with a plurality of annular fins along the length direction of the branch pipe bundle 22, and the annular fins are provided with a plurality of grooves extending from the top ends of the annular fins to the outer surface of the branch pipe bundle 22. The grooves promote the flow of the flue gas among the annular fins and enable the flue gas to form micro-rotational flow, so that the heat exchange effect is improved, the heat transfer area can be saved and the metal consumption is reduced under the condition of transferring the same heat; the grooves promote the flow of smoke among the annular fins, so that dust and scale are not easy to accumulate among the annular fins.
Further, two saturated steam communicating pipes 2 are arranged, the lower ends of the two saturated steam communicating pipes 2 are respectively connected to the left end and the right end of the heat absorption section 1, and the upper ends of the two saturated steam communicating pipes 2 are converged at the heat release section 3. The arrangement enables better self-circulation of saturated steam.
Furthermore, the condensate water self-return pipe 4 comprises a horizontal section 5 and a vertical section 6, the upper end of the vertical section 6 is connected with the heat release section 3, the lower end of the vertical section 6 is connected with one end of the horizontal section 5, and the other end of the horizontal section 5 is connected with the heat absorption section 1.
Further, the device still includes row's trench 12, arranges trench 12 and communicates with horizontal segment 5 through the pipeline, is provided with stop valve 13 on the pipeline, and preferably, stop valve 13 is provided with two, and two stop valves 13 communicate in proper order, so set up can prevent to influence indirect heating equipment's leakproofness because of leaking.
Furthermore, the device also comprises a medium inlet pipe 14, the medium inlet pipe 14 is communicated with the condensed water self-return pipe 4, a water injection water meter 15 is arranged on the medium inlet pipe 14, and a ball valve 16 is respectively arranged on two sides of the water injection water meter 15. When the medium needs to be supplemented into the heat exchanger, the two ball valves 16 are opened, the medium can be supplemented into the heat exchanger by using the medium inlet pipe 14, and the water filling water meter 15 is used for measuring the flow rate of the supplemented medium.
Further, the vertical section 6 comprises three branch pipes and a main pipe, the heat release section 3 is communicated with the upper ends of the three branch pipes, the lower ends of the three branch pipes are communicated with the upper end of the main pipe after being gathered, the lower end of the main pipe is communicated with the horizontal section 5, and each branch pipe is provided with an adjusting valve 19. The regulating valve 19 is used to control the flow of the medium in the branch. The wall surface of the heating surface of the heat absorption section 1 is provided with a wall temperature monitoring point, and the regulating valve 19 is used for regulating the flow of condensed water entering the heat absorption section 1 from a medium in the return pipe 4, so that the wall surface temperature of the heat exchanger is always in a higher level (higher than 126 ℃), the wall surface temperature of the heating surface of the heat absorption section 1 is controlled to be above the dew point temperature of boiler fuel acid, and the heat exchanger is ensured not to be dewed and corroded.
Furthermore, the flue 7 also comprises a diffusion section 17 and a contraction section 18, the diffusion section 17 and the contraction section 18 are respectively arranged at two sides of the heat absorption section 1, and the flue gas sequentially passes through the diffusion section 17, the heat absorption section 1 and the contraction section 18.
Further, the safety valve 10 is a spring full-open type safety valve 10 with the model number of A48H-2.0C DN 40.
Because the flue gas temperature of sulphur stove recovery unit export is higher and produce "little white dragon" (white cigarette) phenomenon easily during exhaust emissions, under the prerequisite that does not increase new energy consumption equipment in addition, utilize the device that this application provided to carry out energy-conserving transformation to current sulphur stove, when reducing exhaust gas temperature, be used for heating cold wind with the heat of retrieving, become behind the cold wind heating for hot-blast sneaking into tail gas in order to eliminate "little white dragon" phenomenon, make tail gas reach the environmental protection requirement.
The specific working process of the device is as follows: flue gas in sulfur furnace recovery unit's flue 7 is when through heat absorption section 1, heat and make it change saturated steam into to the water in the heat absorption section 1, saturated steam goes upward to heat release section 3 through saturated steam communicating pipe 2, saturated steam carries out the heat exchange with the air in the section 3 that releases heat through releasing heat in heat release section 3, the realization is to the heating of air, saturated steam changes saturated water into after releasing heat, saturated water descends to heat absorption section 1 from back flow 4 through the comdenstion water under the effect of gravity, form heat transfer circulation and accomplish the heat absorption exothermal process. The heated air is mixed with tail gas to eliminate the phenomenon of 'small white dragon'.
In one embodiment, the flue gas with the temperature of 260 ℃ is reduced to about 200 ℃ after passing through the heat absorption section 1, the exhaust gas temperature is greatly reduced, the recovered heat is used for heating air while the exhaust gas temperature is reduced, the air with the temperature of 43.47 ℃ passing through the heat release section 3 is heated and then is heated to 160 ℃, the heated air is mixed into tail gas to eliminate the phenomenon of 'small white dragon', and the requirement of environmental protection is met. The design minimum wall temperature of the heating surface of the heat absorption section 1 is 180 ℃ and higher than the acid dew point temperature of the fuel, the minimum wall temperature is controlled at 180 ℃, and the design minimum wall temperature is set aiming at the fuel analysis of a user and the estimated value of the acid dew point, so that the maximum recovery benefit can be ensured on the premise of safety (no condensation) of the heating surface.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
1. the micro-cyclone flue gas waste heat utilization device belongs to static equipment, does not need external power, and naturally circulates by means of gravity;
2. the regulating valve 19 is utilized to control the reflux speed of the saturated water, so that the internal pressure of the heat absorption section 1 is increased or reduced (the temperature is increased or reduced), and the operation that the temperature of the pipe wall of the control device is higher than the acid dew point of the fuel is achieved; the device can reduce the temperature of the exhaust smoke to the maximum extent and can safely operate for a long period;
3. the heat absorption section 1 and the heat release section 3 are designed separately and are arranged in a zero-activity way;
4. the heat absorption section 1 and the heat release section 3 are matched in height, so that the inspection and maintenance are convenient.
The utility model discloses a sulfur furnace is with little whirl flue gas waste heat utilization equipment that is used for sulfur furnace flue gas to disappear white adopts the waste heat recovery of little whirl flue gas waste heat utilization technique flue gas, has reduced the export exhaust gas temperature of afterbody heat exchanger to utilize the waste heat heating air of retrieving, the air of heating sneaks into and is used for eliminating white cigarette in the tail gas.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A micro-cyclone flue gas waste heat utilization device for sulfur furnace flue gas whitening is characterized in that the device can utilize the waste heat of the flue gas in a sulfur furnace flue to heat air,
the device comprises a heat exchanger, wherein the heat exchanger comprises a heat absorption section and a heat release section, the height of the heat release section is higher than that of the heat absorption section, and the peripheries of pipe cavities of the heat absorption section and the heat release section are provided with annular fins;
the heat absorption section is arranged at the tail part of a flue of the sulfur furnace, the heat release section is arranged in an air duct, smoke passes through the heat absorption section and heats a medium in the heat absorption section, the medium is heated by the smoke in the heat absorption section and then enters the heat release section, the medium after heat release in the heat release section flows back to the heat absorption section, air passing through the air duct is heated after passing through the heat release section, and the heated air is mixed with tail gas of the sulfur furnace to eliminate white smoke;
the medium can form micro-rotational flow when flowing in the heat absorption section and the heat release section;
the device also comprises a saturated steam communicating pipe and a condensate water self-return pipe;
the medium heated by the flue gas enters the heat release section through the saturated steam communicating pipe, and the medium subjected to heat release in the heat release section flows back to the heat absorption section from the return pipe through the condensed water;
the heat absorption section and the heat release section are both composed of a plurality of heat exchange units which are vertically parallel and arranged at intervals, each heat exchange unit comprises an upper main tube bundle, a lower main tube bundle and a plurality of branch tube bundles for communicating the upper main tube bundle with the lower main tube bundle, the upper main tube bundles of the heat exchange units of the heat absorption section are communicated with one end of the saturated steam communicating pipe through a first header pipe, and the upper main tube bundles of the heat exchange units of the heat release section are communicated with the other end of the saturated steam communicating pipe through a second header pipe;
the lower main tube bundles of the heat exchange units of the heat absorption section are communicated with one end of the condensed water self-return tube through a third header tube, and the lower main tube bundles of the heat exchange units of the heat release section are communicated with the other end of the condensed water self-return tube through a fourth header tube;
the branch pipe bundle endotheca is equipped with inside lining perforated pipe, the both ends of inside lining perforated pipe with the both ends welding of branch pipe bundle, be covered with the through-hole on the pipe wall of inside lining perforated pipe, the through-hole is rotatory the range.
2. The apparatus of claim 1,
a gate valve is arranged on the saturated steam communicating pipe and is connected with a safety valve to discharge the steam;
the medium is demineralized water.
3. The apparatus of claim 2,
the heat exchange unit in the heat absorption section is perpendicular to the flowing direction of flue gas, and the heat exchange unit in the heat release section is perpendicular to the flowing direction of air passing through the air duct.
4. The apparatus of claim 3,
every the periphery of tributary tube bank has all cup jointed a plurality of annular fins along tributary tube bank's length direction in proper order, be provided with on the annular fin a plurality of by annular fin's top to tributary tube bank's surface extension's slot.
5. The apparatus of claim 4,
the outer diameter of the branch pipe bundle is 38 mm;
the outer diameter of the lining perforated pipe is 32mm, the diameter of the through holes is 14mm or 16mm, and the through holes are arranged in a spiral mode.
6. The apparatus of claim 2, wherein the condensate self-return pipe comprises a horizontal section and a vertical section, the upper end of the vertical section is connected to the heat-releasing section, the lower end of the vertical section is connected to one end of the horizontal section, and the other end of the horizontal section is connected to the heat-absorbing section.
7. The apparatus as claimed in claim 6, further comprising a drain communicating with the horizontal section via a conduit, wherein the conduit is provided with two shut-off valves for regulating the flow of the condensed water from the medium in the return conduit into the heat absorption section so as to control the temperature of the heat receiving surface wall of the heat absorption section above the acid dew point temperature of the fuel in the boiler, and wherein the two shut-off valves are sequentially communicated.
8. The device of claim 2, further comprising a medium inlet pipe, wherein the medium inlet pipe is communicated with the condensate water self-return pipe, a water injection meter is arranged on the medium inlet pipe, and a ball valve is arranged on each of two sides of the water injection meter.
9. The apparatus of claim 6, wherein the vertical section comprises three branch pipes and a main pipe, the heat releasing section is communicated with the upper ends of the three branch pipes, the lower ends of the three branch pipes are combined and communicated with the upper end of the main pipe, the lower end of the main pipe is communicated with the horizontal section, and each branch pipe is provided with a regulating valve.
10. The apparatus of claim 1, wherein the flue further comprises a diffuser section and a condenser section, the diffuser section and the condenser section are respectively disposed at two sides of the heat absorbing section, and the flue gas sequentially passes through the diffuser section, the heat absorbing section and the condenser section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302475.7U CN212006774U (en) | 2019-12-18 | 2019-12-18 | Micro-cyclone flue gas waste heat utilization device for sulfur furnace flue gas whitening elimination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302475.7U CN212006774U (en) | 2019-12-18 | 2019-12-18 | Micro-cyclone flue gas waste heat utilization device for sulfur furnace flue gas whitening elimination |
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| Publication Number | Publication Date |
|---|---|
| CN212006774U true CN212006774U (en) | 2020-11-24 |
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| CN201922302475.7U Active CN212006774U (en) | 2019-12-18 | 2019-12-18 | Micro-cyclone flue gas waste heat utilization device for sulfur furnace flue gas whitening elimination |
Country Status (1)
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| CN (1) | CN212006774U (en) |
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2019
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