CN113694672A - High-temperature gas heat recovery and dust and liquid removal integrated device - Google Patents
High-temperature gas heat recovery and dust and liquid removal integrated device Download PDFInfo
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- CN113694672A CN113694672A CN202111111594.XA CN202111111594A CN113694672A CN 113694672 A CN113694672 A CN 113694672A CN 202111111594 A CN202111111594 A CN 202111111594A CN 113694672 A CN113694672 A CN 113694672A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention provides a high-temperature gas heat recovery and dust removal and liquid removal integrated device which comprises a hot gas main inlet pipe, a cylindrical shell, a main gas outlet pipe, a steam outlet main pipe, a water replenishing pipe, a sewage discharge main pipe, a gas distribution pipe insertion plate, a gas-steam baffle plate, a plurality of gas distribution guide pipes, a plurality of heat exchange branch pipes, a water tank bottom plate and a liquid level meter. The invention achieves the effect of converting heat into steam energy for recycling by cooling the gas and can achieve the aim of preliminarily removing dust and liquid drops contained in the gas. The air distribution guide pipe and the related structure thereof avoid the defects that air flows are respectively uneven among the heat exchange pipes and the heat exchange pipes are easy to block, overcome the defects of high content of condensed fog drops and dust and water vapor of organic volatile matters in the air and poor waste heat utilization effect in the prior direct water spray cooling technology, and have the characteristics of compact structure, long service life and high safety.
Description
Technical Field
The invention belongs to the technical field of inorganic non-metallic materials, and particularly relates to a high-temperature gas heat recovery and dust and liquid removal integrated device.
Background
At present, the production equipment of carbon materials, such as the furnace top dry distillation coal gas of an anthracite calcining furnace, has high temperature and contains low condensation point organic volatile matters (by-products) and solid dust, and the high temperature calcining of inorganic non-metallic materials or the furnace top gas of a smelting furnace has high temperature and contains dust, so that the current situations of complex dry purification equipment and large difficulty in dry purification treatment (such as cloth bags and the like) are caused; in order to avoid the difficult problems of dust removal blockage or burning of purification equipment (such as a dust removal cloth bag and electric tar), before the prior art is used for purification of dust removal and the like and treatment of recycling byproducts and the like, a contact type gas cooling method of directly spraying water is generally adopted, the equipment and the method for cooling by spraying water have the defects that the efficiency of the dust removal equipment is reduced due to the increase of gas flow load or the increase of installed capacity of the equipment is needed, in addition, the water content and the steam content in coal gas are increased due to the water spraying to reduce the heating value and the combustion temperature of the coal gas, and the dust-containing wet gas is extremely easy to block the dust removal cloth bag due to the direct water spraying, so that the economic, cheap and good-effect dry dust removal cloth bag purification device cannot be normally used. Moreover, the existing high-temperature gas cooling device has the defects of low cooling efficiency, incapability of reducing dust and organic volatile matter condensation fog drops in cooling gas and the like due to pipeline blockage and uneven distribution of gas among heat exchange tubes because the gas contains solid dust, low condensation point organic volatile matters and the like. Therefore, if the device is suitable for the dust-containing or low condensation point organic volatile matter condensation fog drops, has high heat exchange efficiency and uniform air flow distribution, reduces the dust of cooling gas and the low condensation point organic volatile matter condensation fog drops, is suitable for the dividing wall type cooling of high-temperature dust-containing gas, can produce a byproduct steam, can improve the purity degree of top gas, recover the waste heat in the top gas, reduce the consumption of direct water contact type cooling (wet cooling) water and reduce the total emission amount of the cooling water (containing organic pollutants such as phenol and the like), and has positive significance for improving economic benefits and environmental protection benefits.
Disclosure of Invention
The invention aims to: the present invention is directed to overcoming the above-mentioned problems, and aims to provide an integrated device for heat recovery and dust/liquid removal of high temperature gas, which can overcome the defects of uniform distribution of air flow among heat exchange tubes, prevent the heat exchange tubes from being blocked by condensed mist drops of organic volatile matters containing dust or low condensation points, convert heat in top gas into steam which can be directly used as power or thermal energy, reduce the temperature of top gas to meet the temperature requirement of subsequent purification treatment, recover some by-products (such as tar and the like) such as organic volatile matters with low condensation points in top gas, and reduce the contents of dust, condensed mist drops, steam and liquid water in cooled top gas.
The technical scheme of the invention is as follows: the high-temperature gas heat recovery and dust removal and liquid removal integrated device comprises a hot gas main inlet pipe, a cylindrical shell part, a main gas outlet pipe, a steam outlet main pipe, a water replenishing pipe, a sewage discharging main pipe, a gas distribution pipe insertion plate, a gas-steam partition plate, a plurality of gas distribution pipes, a plurality of heat exchange branch pipes, a water tank bottom plate and a liquid level meter, wherein the gas distribution pipe insertion plate is a circular plate provided with a plurality of gas distribution pipe insertion holes, a gas distribution cone which is small in top and large in bottom and matched with the inner diameter of the hot gas main inlet pipe is arranged at the central part of the gas distribution pipe insertion plate, the central axis of the gas distribution cone is coincided with the central axis of the hot gas main inlet pipe, the gas-steam partition plate is a circular plate provided with a plurality of heat exchange branch pipe connection fixing holes, the water tank bottom plate is a circular plate provided with a plurality of heat exchange pipe installation holes, the number of the heat exchange branch pipes on the gas-steam partition plate is equal to the number of the heat exchange pipe connection fixing holes on the water tank bottom plate, and the number of the gas distribution pipe installation holes on the water tank bottom plate is equal to the number of the gas distribution pipe insertion holes on the gas distribution pipe insertion plate The cylindrical shell part comprises a conical shell top, a cylindrical shell and a conical barrel-shaped bottom shell, wherein the small end of the shell top is communicated and connected with a hot air main inlet pipe, the large opening end of the shell top is communicated and connected with the upper end of the cylindrical shell in a sealing way, the lower end of the cylindrical shell is communicated and connected with the large opening end of the conical barrel-shaped bottom shell in a sealing way, an air distribution pipe insertion plate is positioned between the shell top and the cylindrical shell and is fixed on the inner wall of the cylindrical shell in a sealing way, an air-steam separation plate is positioned below the air distribution pipe insertion plate in a parallel way and is fixed on the inner wall of the cylindrical shell, the distance between the air-steam separation plate and the air distribution pipe insertion plate is matched with the length of an air distribution pipe, a water tank bottom plate is positioned above the upper end face of the conical barrel-shaped bottom shell and is fixed on the inner side of the lower section of the cylindrical shell in a sealing way, the positions of the air distribution pipe insertion hole, a heat exchange branch pipe connecting fixing hole and a heat exchange pipe mounting hole are matched up and down, the air distribution pipe is formed by matching a tapered conical pipe and a tapered pipe matched with a tapered conical pipe through a throat opening, The air distributing pipe is a straight pipe with a through center, the upper end part of the air distributing pipe is tightly matched and inserted in the air distributing pipe insertion hole, the lower bottom end of the air distributing pipe is sealed with the upper top end of the heat exchanging branch pipe and is smoothly communicated with the inner cavity, the upper section of the heat exchanging branch pipe is connected with a fixing hole through the heat exchanging branch pipe and is tightly fixed with an air-steam baffle plate together, the lower section of the heat exchanging branch pipe extends out of a water tank bottom plate through the inner cavity of a pipe sealing sleeve fixed in the heat exchanging pipe mounting hole, an air guide cylinder ring is arranged on the lower surface of the water tank bottom plate and is positioned between the inner side wall of the cylindrical shell and the area where the heat exchanging branch pipe is positioned, and the central axis of the air guide cylinder ring is coincided with the central axis of the cylindrical shell, the main air outlet pipe is positioned above the lower end face of the air guide cylinder ring and below the water tank bottom plate and is connected with the cylindrical shell in a matched mode, the steam outlet main pipe is fixed to the upper section of the cylindrical shell in a matched mode and is connected with the cylindrical shell in a communicated mode, the water supplementing pipe is positioned above the water tank bottom plate and is connected with the lower section of the cylindrical shell in a matched mode, the tail end of the water supplementing pipe is provided with a water supplementing control valve, the sewage discharging main pipe is positioned at the conical tip of the conical barrel-shaped bottom shell and is connected with the conical barrel-shaped bottom shell in a matched mode, and the sewage discharging main pipe is provided with a normally closed control valve.
The liquid level meter is a float liquid level meter, the upper end of the liquid level meter is communicated with the steam outlet main pipe, and the lower end of the liquid level meter is communicated with the water replenishing pipe.
The pipe sealing sleeve is composed of a pipe joint, sealing filler and a sealing ring cover, wherein the inner cavity of the pipe joint is a stepped through hole, the outline of the pipe joint is cylindrical, the sealing ring cover is in a stepped column platform shape, an inner sealing thread is arranged in a large-diameter port of the stepped through hole of the pipe joint, an outer sealing thread is arranged at a small-diameter section of the stepped column platform of the sealing ring cover, the inner sealing thread of the pipe joint is matched with the outer sealing thread of the sealing ring cover, the large-diameter port of the stepped through hole of the pipe sealing sleeve faces downwards, the inner diameter of a small-diameter port of the stepped through hole of the pipe joint is closely matched with the outer diameter of a heat exchange branch pipe, the outer side face of the pipe sealing sleeve is fixedly connected with the inner wall of a heat exchange branch pipe connecting fixing hole of a water tank bottom plate in a sealing mode, and the sealing filler is pressed in gaps among the inner cavity of the pipe joint, the circular sealing ring cover and the outer wall of the heat exchange branch pipe.
The steam outlet main pipe is provided with a steam safety valve, a steam pressure meter and a steam relief valve, and the tail end of the steam outlet main pipe is also provided with a steam control valve.
The lower part of the conical barrel-shaped bottom shell of the cylindrical shell piece is provided with a support.
The inner side of the shell top of the cylindrical shell is provided with a top heat-insulating layer, and the inner side of the cylindrical shell between the gas distribution pipe insertion plate and the gas-steam partition plate is provided with a side wall heat-insulating layer.
The cylindrical shell of the cylindrical shell is provided with an overflow port pipe in a matching way, and the overflow port pipe is provided with an overflow control valve.
The height of the air guide cylinder ring is not less than 10 times of the inner diameter of the heat exchange branch pipe, the distance between the lower end face of the heat exchange branch pipe and the lower bottom face of the water tank bottom plate is matched with the inner diameter of the heat exchange branch pipe and is not more than 5 times of the inner diameter of the heat exchange branch pipe, the difference between the outer diameter of the air guide cylinder ring and the inner diameter of the cylindrical shell is matched with the radius of the cylindrical shell and is not more than one fourth of the radius of the cylindrical shell, and the distance between the lower end face of the air guide cylinder ring and the upper end face of the conical barrel-shaped bottom shell is not less than 2 times of the height of the air guide cylinder ring.
The cone tip included angle of the gas distribution cone is 90 degrees +/-5 degrees.
The invention has the beneficial effects that: the invention provides a device for converting heat in top gas into steam which can be directly used as power or thermal energy, and recovering by-products (such as tar and the like) such as certain low-condensation-point organic volatile matters in the top gas, and the like, and overcomes the defects that in the prior art, airflow is respectively uneven among heat exchange tubes and the heat exchange tubes are easy to block; the gas distribution guide pipe and the related structure thereof avoid the phenomenon that the condensed fog drops containing dust or organic volatile matters with low condensation points block a pipeline to reduce heat exchange (cooling), and the gas is uniformly distributed in the heat exchange pipe to further improve the heat exchange efficiency and achieve the effect and the purpose of fully recovering the heat of the top gas.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is an assembled sectional view of the main components of the present invention.
Fig. 3 is a schematic structural view of the gas distribution pipe insertion plate of the present invention.
Fig. 4 is a schematic view of the structure of the gas-vapor separator of the present invention.
Fig. 5 is a schematic structural view of a tank bottom plate of the present invention.
Fig. 6 is a partially assembled cross-sectional view of the tube seal assembly, heat exchange straight tube and tank bottom plate of the present invention.
FIG. 7 is an enlarged sectional view of the connection between the gas distribution conduit and the heat exchange straight tube according to the present invention.
Fig. 8 is a schematic view of the working principle of the gas distribution duct of the present invention.
Fig. 9 is a schematic diagram of the working principle of the present invention.
Wherein: 1 is a hot gas main inlet pipe; 2 is a cylindrical shell; 3 is a total air outlet pipe; 4 is a steam outlet header pipe; 5 is a water replenishing pipe; 6 is a main sewage discharge pipe; 7 is a gas distribution pipe insertion plate; 8 is a gas-steam baffle plate; 9 is a gas distribution conduit; 10 is a heat exchange branch pipe; 11 is a water tank bottom plate; 12 is a liquid level meter; 13 is an air distribution conduit plug-in hole; 14 is a gas separating cone; 15 is a heat exchange branch pipe connecting and fixing hole; 16 is a heat exchange pipe fitting mounting hole; 17 is the shell top; 18 is a cylindrical shell; 19 is a cone-barrel-shaped bottom shell; 20 is a tapered conical pipe; 21 is a straight pipe with a throat; 22 is a gradually expanding taper pipe; 23 is a radial through hole; 24 is a tube sealing sleeve; 25 is an air guide cylinder ring; 26 is a normally closed control valve; 27 is a tube knot; 28 is sealing filler; 29 is a sealing ring cover; 41 is a steam safety valve; 42 is a steam pressure gauge; 43 is a steam relief valve; 44 is a steam control valve; 51 is a bracket; 61 is a top insulating layer; 62 is a side wall insulating layer; 71 is an overflow port pipe; and 72 is an overflow control valve.
The specific implementation mode is as follows:
the following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
A high-temperature gas heat recovery and dust removal and liquid removal integrated device is provided by figures 1 to 9 and comprises a hot gas main inlet pipe 1, a cylindrical shell member 2, a main gas outlet pipe 3, a steam outlet header pipe 4, a water replenishing pipe 5, a blowdown header pipe 6, a gas distribution pipe insertion plate 7, a gas-steam baffle plate 8, a plurality of gas distribution pipes 9, a plurality of heat exchange branch pipes 10, a water tank bottom plate 11 and a liquid level meter 12, wherein the gas distribution pipe insertion plate 7 is a circular plate provided with a plurality of gas distribution pipe insertion holes 13, a gas distribution cone 14 which is large in top and small in bottom and is matched with the inner diameter of the hot gas main inlet pipe 1 is arranged at the central part of the gas distribution pipe insertion plate 7, the central axis of the gas distribution cone 14 is coincided with the central axis of the hot gas main inlet pipe 1, the gas-steam baffle plate 8 is a circular plate provided with a plurality of heat exchange connecting fixing holes 15, the water tank bottom plate 11 is a circular plate provided with a plurality of heat exchange pipe fitting mounting holes 16, the number of the connecting and fixing holes 15 of the heat exchange branch pipes on the air-steam separating plate 8 and the number of the mounting holes 16 of the heat exchange pipe fittings on the water tank bottom plate 11 are equal to the number of the inserting holes 13 of the air distribution pipe on the air distribution pipe inserting plate 7, the cylindrical shell 2 is composed of a conical cylindrical shell top 17, a cylindrical shell 18 and a conical cylindrical bottom shell 19, the small end of the shell top 17 is communicated with the hot air main inlet pipe 1, the large opening end of the shell top 17 is hermetically communicated with the upper end of the cylindrical shell 18, the lower end of the cylindrical shell 18 is hermetically communicated with the large opening end of the conical cylindrical bottom shell 19, the air distribution pipe inserting plate 7 is positioned between the shell top 17 and the cylindrical shell 18 and is hermetically fixed on the inner wall of the cylindrical shell 18, the air-steam separating plate 8 is positioned below the air distribution pipe inserting plate 7 in parallel and is fixed on the inner wall of the cylindrical shell 18, the distance between the air-steam separating plate 8 and the air distribution pipe inserting plate 7 is matched with the length of the air distribution pipe 9, the water tank bottom plate 11 is positioned on the upper end surface of the conical barrel-shaped bottom shell 19 and is hermetically fixed on the inner side of the lower section of the cylindrical shell 18, the positions of the air distribution conduit insertion hole 13, the heat exchange branch pipe connecting fixing hole 15 and the heat exchange pipe fitting mounting hole 16 are matched and corresponding up and down, the air distribution conduit 9 is an even air pipe fitting formed by smoothly communicating an inner cavity tapered conical pipe 20 with an inner cavity tapered conical pipe 22 through a throat straight pipe 21, the throat straight pipe 21 of the air distribution conduit 9 is provided with more than one radial through hole 23, the radial through hole 23 is vertical to the central axis of the air distribution conduit 9, the inner diameter of the radial through hole 23 is matched with the inner diameter of the throat straight pipe 21, the heat exchange branch pipe 10 is a straight pipe fitting with a through center, the upper end part of the air distribution conduit 9 is tightly matched and inserted in the air distribution conduit insertion hole 13, the lower bottom end of the air distribution conduit 9 is sealed with the upper top end of the heat exchange branch pipe 10 and the inner cavity is smoothly communicated, the upper section of the heat exchange branch pipe 10 is hermetically fixed with the air-steam baffle plate 8 through a heat exchange branch pipe connecting fixing hole 15, the lower section of the heat exchange branch pipe 10 extends out of the water tank bottom plate 11 through an inner cavity of a pipe sealing sleeve 24 fixed in a heat exchange pipe fitting mounting hole 16, the lower surface of the water tank bottom plate 11 is provided with an air guide cylinder ring 25, the air guide cylinder ring 25 is positioned between the inner side wall of the cylindrical shell 18 and the area where the heat exchange branch pipe 10 is positioned, the central axis of the air guide cylinder ring 25 is superposed with the central axis of the cylindrical shell 2, a main air outlet pipe 3 is positioned above the lower end surface of the air guide cylinder ring 25 and below the water tank bottom plate 11 and is communicated and connected with the cylindrical shell 18 in a matching way, a steam outlet header pipe 4 is fixed on the upper section of the cylindrical shell 18 and is communicated and connected with the cylindrical shell 18 in a matching way, a water replenishing pipe 5 is positioned above the water tank bottom plate 11 and is communicated and connected with the lower section of the cylindrical shell 18 in a matching way, and the tail end of the water replenishing pipe 5 is provided with a water replenishing control valve, the main sewer pipe 6 is located at the conical tip of the conical barrel-shaped bottom shell 19 and is communicated with the conical barrel-shaped bottom shell 19 in a matching way, and the main sewer pipe 6 is provided with a normally-closed control valve 26.
The liquid level meter 12 is a float liquid level meter, the upper end of the liquid level meter 12 is communicated with the steam outlet main pipe 4, and the lower end of the liquid level meter 12 is communicated with the water replenishing pipe 5.
The tube sealing sleeve 24 is composed of a tube knot 27 with a stepped inner cavity, a cylindrical outer contour, sealing filler 28 and a sealing ring cover with a stepped outer contour, an inner sealing thread is arranged in a large-diameter port of the stepped through hole of the tube knot 27, an outer sealing thread is arranged in a small-diameter section of the stepped outer contour of the sealing ring cover 29, the inner sealing thread of the tube knot 27 is matched with the outer sealing thread of the sealing ring cover 29, the large-diameter port of the stepped through hole of the tube sealing sleeve 24 faces downwards, the inner diameter of the small-diameter port of the stepped through hole of the tube knot 27 is closely matched with the outer diameter of the heat exchange branch tube 10, the outer side surface of the tube sealing sleeve 24 is fixedly connected with the inner wall of the heat exchange branch tube connecting and fixing hole 15 of the water tank bottom plate 11 in a sealing mode, and the sealing filler 28 is pressed in a gap between the inner cavity of the tube knot 27, the circular sealing ring cover 29 and the outer wall of the heat exchange branch tube 10 in a matching mode.
The steam outlet header pipe 4 is provided with a steam safety valve 41, a steam pressure gauge 42 and a steam relief valve 43, and the tail end of the steam outlet header pipe 4 is also provided with a steam control valve 44.
The lower part of the conical barrel-shaped bottom shell 19 of the cylindrical shell 2 is provided with a bracket 51.
The inner side of the shell top 17 of the cylindrical shell 2 is provided with a top heat preservation layer 61, and the inner side of the cylindrical shell 18 between the air distribution pipe insertion plate 7 and the air-steam partition plate 8 is provided with a side wall heat preservation layer 62.
The cylindrical shell 18 of the cylindrical shell 2 is provided with an overflow port pipe 71 in a matching way, and the overflow port pipe is provided with an overflow control valve 72.
The height of the air guide cylinder ring 25 is not less than 10 times of the inner diameter of the heat exchange branch pipe 10, the distance between the lower end face of the heat exchange branch pipe 10 and the lower bottom face of the water tank bottom plate 11 is matched with the inner diameter of the heat exchange branch pipe 10 and is not more than 5 times of the inner diameter of the heat exchange branch pipe 10, the difference between the outer diameter of the air guide cylinder ring 25 and the inner diameter of the cylindrical shell 18 is matched with the radius of the cylindrical shell 18 and is not more than one fourth of the radius of the cylindrical shell 18, and the distance between the lower end face of the air guide cylinder ring 25 and the upper end face of the conical barrel-shaped bottom shell 19 is not less than 2 times of the height of the air guide cylinder ring 25.
The cone tip included angle of the gas distribution cone 14 is 90 degrees +/-5 degrees.
The first embodiment is as follows: the furnace top dry distillation gas for electrically calcining anthracite (the temperature of the furnace top dry distillation gas is 800 ℃, the total sum of the volatile matters containing dust and having low melting point is 12 g/m)3) When cooling, the components mentioned above are prepared and connected and assembled before operation, the inner diameter of the hot gas main inlet pipe 1 is 450mm, the total height of the cylinder shell 2 is 9 m, the total height of the cylinder shell 18 is 6 m, the inner diameter of the cylinder shell 18 is 2.8 m, the length of the heat exchange branch pipe 10 is 4.6 m, and the inner diameter of the heat exchange branch pipe 10 is 30mm, when in use, the hot gas main inlet pipe 1 is connected with the dust-containing high-temperature furnace top gas through an externally arranged hot gas valve, the main gas outlet pipe 3 is connected with a gas outlet pipeline through an externally arranged gas valve, a water replenishing pipe 5 and a water replenishing control valve are connected with an externally arranged water supply system, the water level in the cylinder shell 18 is controlled to be at a proper position by integrally matching the water supply system, the liquid level meter 12 and the overflow control valve 72, and the steam outlet and various associated steam valves are in a normal state, when in use, the dust-containing high-temperature furnace top gas flows to the gas distribution cone 14 through the hot gas main inlet pipe 1, the airflow is guided by the air distribution cone 14 under the restraint of the inner wall of the cylinder shell 18 and the inner wall of the shell top, flows into the upper end opening of each air distribution guide pipe 9, flows into the air guide pipe ring 25 through the heat exchange branch pipe 10, flows to the surface of oil or ash deposited in the cone-shaped bottom shell 19 or the bottom shell under the restraint of the air guide pipe ring 25, and flows obliquely upwards to the cylinder after being blocked by the liquid (material) surfaceThe inner side wall of the shell 18 flows out through the air outlet pipe 3 under the constraint of the air guide cylinder ring 25, in the process that hot gas flows through the heat exchange branch pipe 10, the pipe wall of the heat exchange branch pipe 10 is subjected to heat exchange with steam and water, the hot gas is cooled to a temperature below the boiling point of water or even close to the temperature of supplementary water, then the hot gas is discharged from the main air outlet pipe 3 through an annular gap between the air guide cylinder ring 25 and the cylindrical shell 18, so that the aim of cooling high-temperature gas is fulfilled, in the process, low-condensation-point organic volatile matters and superheated water vapor in furnace top gas in the heat exchange branch pipe 10 are cooled to generate condensed fog drops, then the condensed fog drops, dust and gas enter a dust collection chamber (a space region surrounded by the water tank bottom plate 11, the conical barrel-shaped bottom shell 19 and the cylindrical shell 18), finally, the dust and the condensed fog drops fall to the bottom of the dust collection chamber or a liquid (material) surface under the action of inertia, and the gas is reflected by the liquid (material) surface and flows upwards under the guidance of the air guide cylinder ring 25, the device has the effect of removing or reducing dust and condensed fog drops in gas, and the normally closed control valve is opened by a machine selection to discharge the collected matters in the conical barrel-shaped bottom shell 19 to an externally-matched liquid (material) receiving facility, so that the effects and purposes of converting heat in the top gas into water vapor which can be directly used as power or thermal energy, removing certain low-condensation-point organic volatile matters in the top gas and further recovering the volatile matters to form byproducts (such as tar and the like) are achieved.
Example two: the invention is used for high-temperature dust-containing top gas of a glass kiln (the top gas temperature of the glass kiln is 560 ℃, and the top gas contains furnace dust with coarser particles of 0.5g/m3) When the cooling device is used for cooling, the components mentioned above are prepared and connected and assembled before operation, the inner diameter of the hot air main inlet pipe 1 is 400mm, the total height of the cylinder shell 2 is 8 m, the total height of the cylinder shell 18 is 6 m, the inner diameter of the cylinder shell 18 is 2.8 m, the length of the heat exchange branch pipe 10 is 4.6 m, and the inner diameter of the heat exchange branch pipe 10 is 25mm, when the device is used, the hot air main inlet pipe 1 is connected with the dust-containing high-temperature furnace top air through an externally-arranged hot air valve, the main air outlet pipe 3 is connected with an air outlet pipeline through an externally-arranged air valve, the water replenishing pipe 5 and the water replenishing control valve are connected with an externally-arranged water supply system, and the externally-arranged water supply system is integrally matched with the liquid level meter 12 and the overflow control valve 72 to control the water level in the cylinder shell 18 to be at a proper position(i.e. when water is boiling, no water is carried to the height of a steam outlet, as shown in H in figure 9), the invention ensures the sealing to be simple and easy because the pipe sealing sleeve 24 and the water tank bottom plate are positioned in a lower temperature area below the water surface, the structure and assembly of the pipe joint, the sealing ring cover, the sealing filler and the heat exchange branch pipe 10 of the pipe sealing sleeve 24 ensure the sealing and can allow the heat exchange branch pipe 10 to extend and contract in the length direction when being heated or cooled, the upper end part of the gas distribution guide pipe 9 is inserted into the gas distribution guide pipe insertion hole 13 in a transition fit mode, the heat exchange branch pipe 10 and the gas-steam baffle plate 8 are welded together in a sealing way by adopting steel materials made of the same material and the gas-steam baffle plate 8, thus both ends of the gas distribution guide pipe 9 and the heat exchange branch pipe 10 welded into a whole heat exchange pipe fitting form telescopic free ends, the heat exchange pipe fitting can freely extend and contract in the length directions of both sides of the gas-steam baffle plate 8, therefore, the cracking and steam leakage phenomena caused by thermal stress of the heat exchange branch pipe 10 and the gas-steam baffle plate 8 can be greatly reduced or avoided, and the service life and the safety of the invention are improved. When the invention is used, the dust-containing high-temperature furnace top gas flows to the gas distribution cone 14 through the hot gas main inlet pipe 1, flows to the upper end inlet of each gas distribution guide pipe 9 under the guiding action of the gas distribution cone 14 under the restraint of the inner wall of the cylindrical shell 18 and the inner wall of the top of the shell, flows out through the heat exchange branch pipes 10, flows to the surface of dust (material) deposited in the conical barrel-shaped bottom shell 19 or the bottom shell under the restraint of the air guide cylinder ring 25, flows to the inner side wall of the cylindrical shell 18 obliquely upwards after being blocked, flows out through the gas outlet pipe 3 under the restraint of the air guide cylinder ring 25 (the air flow shown by the arrow in figure 9), when the hot gas flows through the heat exchange branch pipes 10, the hot gas exchanges heat with water through the pipe walls of the heat exchange branch pipes 10 (when water vapor exists in the cylindrical shell 18, the pipe walls of the heat exchange branch pipes 10 exchange heat with the water vapor firstly), and the total heat exchange area of all the heat exchange branch pipes 10 is enough to realize that the temperature of the gas discharge branch pipes 10 is lower than the boiling point of the water and is close to the temperature of the make-up water, the cooled furnace top gas is discharged from the main gas outlet pipe 3 through an annular gap between the air guide cylinder ring and the cylinder shell 18, so that the purpose of cooling high-temperature gas is achieved; at the same time, the dust contained in the hot gas flow is carried into the gas distribution duct 9 by the gas flow under the split flow of the gas-splitting cone, and finally the dust and condensate enter the dust collection chamber (through water) along with the gas flowThe space area enclosed by the box bottom plate, the conical barrel-shaped bottom shell 19 and the cylindrical shell 18), dust and condensate are flushed towards the dust collection chamber under the action of inertia and fall to the dust (feed liquid) surface or the bottom of the dust collection chamber, and when the dust and condensate fall to a certain extent, the normally closed control valve 26 is opened and is discharged to an externally matched dust collection facility. Therefore, the purposes of efficiently recovering sensible heat and latent heat in the gas and meeting the temperature requirement of subsequent further purification are achieved, and the dust and condensate with coarser particles and larger specific gravity in the gas can be removed.
When the invention is used, the upright and through structure of the gas distribution conduit 9 and the heat exchange branch pipe 10 can reduce or even avoid the blockage of the heat exchange pipeline. When the invention is applied, a pressure-equalizing chamber (as shown in a region V-V in figure 8, and the arrow in figure 8 is the direction of air flow) with equal static pressure is formed in the gap of the inner cavity between the air distribution pipe insertion plate 7, the air-steam separation plate 8 and the cylindrical shell 18, the radial through hole 23 of each air distribution pipe 9 is communicated with the pressure-equalizing chamber, when the air flow flows into the air distribution pipes 9, the air flow flows in a conical surface with gradually contracted area, an energy conversion process of increasing flow speed and reducing pressure is generated, when the air flow entering the air distribution pipes 9 is unevenly distributed, the pressure energy, namely the air pressure and the kinetic energy, entering the adjacent or separated air distribution pipes 9 are unequal, the static pressure of the air flow in the radial through holes 23 between the adjacent or separated air distribution pipes 9 is unequal at the straight throat section 21, so that the pressure difference exists between the air-equalizing chamber and the air at the straight throat section 21, and then the phenomenon that the gas in the gas distribution conduit 9 flows out of the straight section 21 of the throat opening (the gas distribution conduit 9 has strong airflow) or the gas in the pressure equalizing chamber flows into the straight section 21 of the throat opening (the gas distribution conduit 9 has weak airflow) is generated, after the gas flows through the gas distribution conduit 9 and the pressure equalizing chamber, the gas flows into the heat exchange branch pipes 10 to be uniformly distributed, the gradually expanding taper pipe 22 of the gas distribution conduit 9 increases the back pressure of the gas at the straight section 21 of the throat opening and simultaneously achieves the matching property and the smoothness of the inner cavity between the gas distribution conduit 9 and the heat exchange branch pipes 10, thus the effect of uniform distribution of the gas in each heat exchange branch pipe 10 is achieved, and the cooling efficiency is improved. The side wall heat-insulating layer reduces the wall surface temperature of the cylindrical shell and can reduce heat loss.
The temperature of the discharged cooling gas is close to the temperature of the make-up water, so that the cooling effect is good, the thermal efficiency of the generated steam is high, the hidden danger and the risk of pressurized steam or water leakage caused by strength failure due to overheating of individual heat exchange branch pipes generated by uneven distribution of high-temperature gas flow are avoided, normal-pressure (or high-pressure) hot steam which can be used as power or a heat source can be generated, and the temperature of the cooled gas is lower than the boiling point of water, so that the temperature requirement of a conventional cloth dry dedusting and deep purification device can be met, and the phenomenon of burning down dedusting equipment is avoided.
The invention achieves the effects of cooling the gas and recovering the heat energy, can achieve the aim of primarily removing dust and liquid drops contained in the gas, and has the characteristics of compact structure, long service life and high safety.
Claims (9)
1. The utility model provides a high temperature gas heat recovery and dust removal take off liquid integrated device, includes steam main inlet pipe (1), drum shell spare (2), total outlet pipe (3), steam outlet house steward (4), moisturizing pipe (5), blowdown house steward (6), gas distribution pipe plugboard (7), gas-vapour baffle (8), a plurality of gas distribution pipe (9), a plurality of heat transfer branch pipe (10), water tank bottom plate (11) and level gauge (12), its characterized in that: the gas distribution pipe insertion plate (7) is a circular plate provided with a plurality of gas distribution pipe insertion holes (13), a gas distribution cone (14) which is big in top and small in bottom and matched with the inner diameter of a hot gas main inlet pipe (1) is arranged at the central part of the gas distribution pipe insertion plate (7), the central axis of the gas distribution cone (14) is superposed with the central axis of the hot gas main inlet pipe (1), the gas-steam partition plate (8) is a circular plate provided with a plurality of heat exchange branch pipe connecting and fixing holes (15), the water tank bottom plate (11) is a circular plate provided with a plurality of heat exchange pipe fitting installation holes (16), the number of the heat exchange branch pipe connecting and fixing holes (15) on the gas-steam partition plate (8) and the number of the heat exchange pipe fitting installation holes (16) on the water tank bottom plate (11) are equal to the number of the gas distribution pipe insertion holes (13) on the gas distribution pipe insertion plate (7), and the cylindrical shell (2) is formed by a cylindrical shell top (17), A cylinder shell (18) and a cone-barrel-shaped bottom shell (19), wherein the small end of a shell top (17) is communicated and connected with a hot air main inlet pipe (1), the large opening end of the shell top (17) is communicated and connected with the upper end of the cylinder shell (18) in a sealing way, the lower end of the cylinder shell (18) is communicated and connected with the large opening end of the cone-barrel-shaped bottom shell (19) in a sealing way, an air distribution pipe insertion plate (7) is positioned between the shell top (17) and the cylinder shell (18) and is fixed on the inner wall of the cylinder shell (18) in a sealing way, an air-steam partition plate (8) is positioned below the air distribution pipe insertion plate (7) in a parallel way and is fixed on the inner wall of the cylinder shell (18), the distance between the air-steam partition plate (8) and the air distribution pipe insertion plate (7) is matched with the length of the air distribution pipe (9), a water tank bottom plate (11) is positioned above the upper end surface of the cone-barrel-shaped bottom shell (19) and is fixed on the inner side of the lower section of the cylinder shell (18) in a sealing way, the positions of the air distribution duct insertion hole (13), the heat exchange branch pipe connecting fixing hole (15) and the heat exchange pipe fitting mounting hole (16) are matched and corresponding up and down, the air distribution duct (9) is an even air pipe fitting formed by smoothly communicating and connecting a taper pipe (20) with a gradually-reduced inner cavity with a taper pipe (22) with a gradually-expanded inner cavity through a throat straight pipe (21), more than one radial through hole (23) is arranged at the throat straight pipe (21) of the air distribution duct (9), the radial through hole (23) is vertical to the central axis of the air distribution duct (9), the inner diameter of the radial through hole (23) is matched with the inner diameter of the throat straight pipe (21), the heat exchange branch pipe (10) is a straight pipe with a through center, the upper end of the air distribution duct (9) is tightly matched and inserted in the air distribution duct insertion hole (13), the lower bottom end of the air distribution duct (9) is hermetically communicated and smoothly communicated with the upper top end of the heat exchange branch pipe (10), the upper sections of the heat exchange branch pipes (10) are hermetically fixed with the air-steam partition plate (8) through heat exchange branch pipe connecting fixing holes (15), the lower sections of the heat exchange branch pipes (10) extend out of the water tank bottom plate (11) through the inner cavity of a pipe sealing sleeve (24) fixed in the heat exchange pipe fitting mounting holes (16), the lower surface of the water tank bottom plate (11) is provided with an air guide cylinder ring (25), the air guide cylinder ring (25) is positioned between the inner side wall of the cylindrical shell (18) and the region where the heat exchange branch pipes (10) are positioned, the central axis of the air guide cylinder ring (25) is superposed with the central axis of the cylindrical shell (2), the main air outlet pipe (3) is positioned above the lower end face of the air guide cylinder ring (25), is positioned below the water tank bottom plate (11) and is matched and communicated with the cylindrical shell (18), the steam outlet header pipe (4) is matched and fixed on the upper sections of the cylindrical shell (18) and is communicated with the cylindrical shell (18), the water supplementing pipe (5) is positioned on the water tank bottom plate (11) and is communicated and connected with the lower section of the cylindrical shell (18) in a matched mode, the tail end of the water supplementing pipe (5) is provided with a water supplementing control valve, the sewage main pipe (6) is positioned at the conical tip of the conical barrel-shaped bottom shell (19) and is communicated and connected with the conical barrel-shaped bottom shell (19) in a matched mode, and the sewage main pipe (6) is provided with a normally closed control valve (26).
2. The integrated device for heat recovery and dust removal and liquid removal of high-temperature gas as claimed in claim 1, wherein: the liquid level meter (12) is a float liquid level meter, the upper end of the liquid level meter (12) is communicated with the steam outlet main pipe (4), and the lower end of the liquid level meter (12) is communicated with the water replenishing pipe (5).
3. The integrated device for heat recovery and dust removal and liquid removal of high-temperature gas as claimed in claim 1, wherein: the tube sealing sleeve (24) is composed of a tube joint (27) with a stepped inner cavity, a cylindrical outline, a sealing filler (28) and a sealing ring cover (29) with a stepped frustum outline, an inner sealing thread is arranged in a large-diameter port of the stepped through hole of the tube joint (27), an outer sealing thread is arranged in a small-diameter section of the stepped frustum of the sealing ring cover (29), the inner sealing thread of the tube joint (27) is matched with the outer sealing thread of the sealing ring cover (29), the large-diameter port of the stepped through hole of the tube sealing sleeve (24) faces downwards, the inner diameter of the small-diameter port of the stepped through hole of the tube joint (27) is closely matched with the outer diameter of the heat exchange branch tube (10), the outer side surface of the tube sealing sleeve (24) is fixedly connected with the inner wall of the heat exchange branch tube connecting and fixing hole (15) of the water tank bottom plate (11) in a sealing mode that the sealing filler (28) is matched and pressed in the inner cavity, the inner cavity and the tube joint (27) in a sealing filler (28), A gap between the circular sealing ring cover (29) and the outer wall of the heat exchange branch pipe (10).
4. The integrated device for heat recovery and dust removal and liquid removal of high-temperature gas as claimed in claim 1, wherein: the steam outlet header pipe (4) is provided with a steam safety valve (41), a steam pressure gauge (42) and a steam relief valve (43), and the tail end of the steam outlet header pipe (4) is also provided with a steam control valve (44).
5. The integrated device for heat recovery and dust removal and liquid removal of high-temperature gas as claimed in claim 1, wherein: the lower part of the conical barrel-shaped bottom shell (19) of the cylindrical shell piece (2) is provided with a bracket (51).
6. The integrated device for heat recovery and dust removal and liquid removal of high-temperature gas as claimed in claim 1, wherein: the inner side of the shell top (17) of the cylindrical shell (2) is provided with a top heat-insulating layer (61), and the inner side of the cylindrical shell (18) between the air distribution pipe insertion plate (7) and the air-steam partition plate (8) is provided with a side wall heat-insulating layer (62).
7. The integrated device for heat recovery and dust removal and liquid removal of high-temperature gas as claimed in claim 1, wherein: the cylindrical shell (18) of the cylindrical shell component (2) is provided with an overflow port pipe (71) in a matching way, and the overflow port pipe is provided with an overflow control valve (72).
8. The integrated device for heat recovery and dust removal and liquid removal of high-temperature gas as claimed in claim 1, wherein: the height of the air guide cylinder ring (25) is not less than 10 times of the inner diameter of the heat exchange branch pipe (10), the distance between the lower end face of the heat exchange branch pipe (10) and the lower bottom face of the water tank bottom plate (11) is matched with the inner diameter of the heat exchange branch pipe (10) and is not more than 5 times of the inner diameter of the heat exchange branch pipe (10), the difference between the outer diameter of the air guide cylinder ring (25) and the inner diameter of the cylindrical shell (18) is matched with the radius of the cylindrical shell (18) and is not more than one fourth of the radius of the cylindrical shell (18), and the distance between the lower end face of the air guide cylinder ring (25) and the upper end face of the conical barrel-shaped bottom shell (19) is not less than 2 times of the height of the air guide cylinder ring (25).
9. The integrated device for heat recovery and dust removal and liquid removal of high-temperature gas as claimed in claim 1, wherein: the included angle of the cone tip of the gas distribution cone (14) is 90 degrees +/-5 degrees.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719619A (en) * | 2022-04-01 | 2022-07-08 | 合肥真萍电子科技有限公司 | Industrial furnace tail gas filter |
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| CN2222886Y (en) * | 1995-04-20 | 1996-03-20 | 国家建筑材料工业局武汉建筑材料工业设计研究院 | Kiln rear flue gas cooler |
| CN207958416U (en) * | 2018-03-19 | 2018-10-12 | 郑州大学 | A kind of uniform gas distribution brick of monolithic devices hot-blast stove |
| CN110976107A (en) * | 2019-12-25 | 2020-04-10 | 江苏世能化工设备有限公司 | Manganese ore waste residue waste heat recovery and dust removal integrated equipment |
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2021
- 2021-09-23 CN CN202111111594.XA patent/CN113694672A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222886Y (en) * | 1995-04-20 | 1996-03-20 | 国家建筑材料工业局武汉建筑材料工业设计研究院 | Kiln rear flue gas cooler |
| CN207958416U (en) * | 2018-03-19 | 2018-10-12 | 郑州大学 | A kind of uniform gas distribution brick of monolithic devices hot-blast stove |
| CN110976107A (en) * | 2019-12-25 | 2020-04-10 | 江苏世能化工设备有限公司 | Manganese ore waste residue waste heat recovery and dust removal integrated equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114719619A (en) * | 2022-04-01 | 2022-07-08 | 合肥真萍电子科技有限公司 | Industrial furnace tail gas filter |
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