Molten salt furnace for realizing rapid denitration treatment of flue gas
By installing denitrification and dust removal structures at the flue gas outlet of the molten salt furnace, and utilizing sodium hydroxide solution spraying and electrostatic dust removal technology, the problem of nitrate emissions in the flue gas of the molten salt furnace was solved, achieving rapid denitrification and dust removal, thus protecting the environment and human health.
Patent Information
- Application Number
- CN202422652472.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing molten salt furnaces do not have flue gas denitrification capabilities, resulting in the direct emission of nitrate-containing waste gas generated during combustion, which pollutes the environment and endangers human health.
A denitrification structure is installed at the flue gas outlet of the molten salt furnace. Sodium hydroxide solution is atomized and sprayed to contact the flue gas, which reacts quickly to remove nitrogen oxides. Particulate matter is removed through a dust removal structure, including activated carbon adsorption and electrostatic dust removal.
It achieves rapid denitrification and dust removal of flue gas, reduces emissions of nitrogen oxides and particulate matter, protects the ecological environment and human health, and reduces the harm of acid rain and photochemical smog.
Smart Images
Figure CN223570410U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of fused salt furnace, specifically relates to a kind of fused salt furnace for realizing flue gas rapid denitration treatment. BACKGROUND
[0002] Fused salt furnace is a kind of heat equipment using high-temperature molten salt as working medium, by heating molten salt to high temperature state, then using the heat energy transfer of molten salt to the object to be heated, realize object heating or process requirement, usually by fuel supply system, molten salt circulation system and heating system etc. It is through the heating source outside, molten salt absorbs heat in the heating process, then heat energy is transferred to the object to be heated by circulation system, complete heating or heat treatment;
[0003] The current fused salt furnace does not have the function of denitration treatment of flue gas, and waste gas will be produced during combustion, and the gas volatilized or decomposed by the material contains nitrate, if it is directly discharged without treatment, it will cause serious pollution to the atmospheric environment, nitrogen oxides and other nitrate-containing substances will form acid rain, which will erode soil, damage buildings, also will acidify water, affect the survival of aquatic organisms, at the same time, it will cause photochemical smog, reduce atmospheric visibility, cause safety hazard to traffic, and harmful substances in it will stimulate respiratory tract, endanger human health, destroy ecological balance, affect crop growth and human health. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of fused salt furnace for realizing flue gas rapid denitration treatment to solve the above-mentioned deficiencies in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of fused salt furnace for realizing flue gas rapid denitration treatment, including fused salt furnace main body, the upper end surface side of the fused salt furnace main body is connected with feed hopper, the side of the feed hopper and located the upper end surface of fused salt furnace main body is connected with flue gas outlet pipe, the outside of the fused salt furnace main body is fixedly connected with support base, and the lower end surface middle position of fused salt furnace main body is connected with discharge pipe with switch valve.
[0006] Preferably, the flue gas outlet of the flue gas outlet pipe is provided with a denitration structure, the denitration structure includes a denitration tank connected to the upper end surface of the flue gas outlet pipe, a first upper hollow plate and a first lower hollow plate are fixedly connected to the inner surface wall of the denitration tank from top to bottom, an outer spacer plate and an inner spacer plate are connected between the first upper hollow plate and the first lower hollow plate, an outer spray disc is arranged on the outer side of the outer spacer plate, and an inner spray disc is arranged on the outer side of the inner spacer plate.
[0007] Preferably, the inner and outer spray plates are fixedly connected to the first upper hollow plate through a block, and the lower end faces of the inner and outer spray plates are respectively connected with a plurality of atomizing nozzles at equal distances and uniformly, a connecting pipe is connected between the inner and outer spray plates, the connecting pipe penetrates through the outer partition plate, the outer sidewall of the outer spray plate is connected with a liquid inlet pipe, and the liquid inlet end of the liquid inlet pipe penetrates through and extends to the outside of the denitration box.
[0008] Preferably, the lower end face of the denitration box is fixedly connected with a plurality of support columns, and the plurality of support columns are connected to the upper end face of the molten salt furnace body through bolts.
[0009] Through the above technical solution:
[0010] Before the flue gas is discharged, the flue gas enters the denitration box through the smoke outlet pipe, and then enters the chamber separated by the two partition plates through the holes of the first lower hollow plate. Then, the sodium hydroxide solution enters the outer spray plate through the liquid inlet pipe, enters the inner spray plate through the connecting pipe, and is finally sprayed in the chamber by a plurality of atomizing nozzles. The sodium hydroxide solution is atomized into fine particles by the spraying method and sprayed into contact with the flue gas. The sodium hydroxide solution can rapidly react with nitrogen oxides in the flue gas in a short time to achieve rapid denitration treatment, reduce nitrogen oxide emissions, effectively reduce the content of nitrogen oxides in the flue gas, and avoid the formation of acid rain, photochemical smog and other hazards after the flue gas enters the atmosphere.
[0011] Preferably, one side of the molten salt furnace body is provided with a dust removal structure, the dust removal structure comprises a dust removal box fixedly connected to the outer wall of the molten salt furnace body through a fixed frame, the inner wall of the dust removal box is fixedly connected with a partition plate, and the inner wall of the through slot of the partition plate is fixedly connected with an activated carbon adsorption plate.
[0012] Preferably, the inner wall of the dust removal box and the upper end of the partition plate are fixedly connected with a connecting plate, the lower end face of the connecting plate is connected with a dust removal bag through a screw, and a flow-through groove is formed in the connecting plate.
[0013] Preferably, the dust removal structure further comprises a second upper hollow plate movably connected to the inner wall of the dust removal box and located at the lower end of the partition plate, a second lower hollow plate movably connected to the inner wall of the dust removal box and located at the lower end of the second upper hollow plate, and a negative electrode plate and a positive electrode plate arranged between the second lower hollow plate and the second upper hollow plate, the negative electrode plate and the positive electrode plate are arranged by being folded and crossed with each other, the front wall of the dust removal box is connected with an air outlet pipe, the lower end face of the dust removal box is connected with a discharge port, the discharge port penetrates and extends to the lower end of the fixed frame, the outer sidewalls of the second upper hollow plate and the second lower hollow plate are respectively connected with a sliding block, the upper and lower ends of the sliding block are connected with a spring, and the spring and the sliding block are embedded in the embedded groove reserved in the dust removal box.
[0014] Preferably, the upper end surface of the denitration box is connected with a communication pipe, and the smoke outlet end of the communication pipe is connected with the upper end surface of the dust removal box.
[0015] Through the above technical scheme:
[0016] After the flue gas is subjected to the denitration treatment, the flue gas enters the dust removal box through the communication pipe, and the flue gas first enters the dust removal bag, and the particulate matters in the flue gas are removed by filtration, the flue gas subjected to the first dust removal treatment passes through the activated carbon adsorption plate to remove the heavy metal pollutants such as mercury in the flue gas, and then the flue gas enters the lower half chamber of the dust removal box and contacts the positive electrode plate and the negative electrode plate, the flue gas can be adhered between the positive electrode plate and the negative electrode plate, the particulate matters in the flue gas are collected by electrostatic action, and the fine particulate matters in the flue gas can be removed, at the same time, the vibration block (not shown in the figure) is started, the vibration block is installed in the second upper hollow plate and the second lower hollow plate, the second upper hollow plate and the second lower hollow plate are vibrated up and down by the vibration block, the impurities adhered outside the positive electrode plate and the negative electrode plate fall downward, and the impurities are finally discharged through the discharge port, and the operation can not only remove the nitrogen oxides in the flue gas before emission, but also effectively remove the particulate matters such as flue dust contained in the flue gas, so that the flue gas emitted into the atmosphere is cleaner.
[0017] In the above technical scheme, the technical effects and advantages of the utility model are provided:
[0018] 1. By setting the denitration structure, the molten salt furnace is provided with the denitration treatment for flue gas, before the flue gas is emitted, the sodium hydroxide solution is atomized into fine particles by spraying and contacted with the flue gas, the reaction with the nitrogen oxides in the flue gas can be rapidly realized in a short time, the rapid denitration can be realized, the nitrogen oxide emission can be reduced, the nitrogen oxide content in the flue gas can be effectively reduced, the harm such as acid rain and photochemical smog caused by the nitrogen oxides entering the atmosphere can be avoided, the ecological environment can be protected, the atmospheric quality can be maintained, and the pollution of waste gas generated by the molten salt furnace to the environment and the influence on the human body are reduced.
[0019] 2. By setting the dust removal structure, the flue gas can also have the dust removal function after the denitration, the nitrogen oxides in the flue gas can be removed before emission, and the particulate matters such as flue dust contained in the flue gas can be effectively removed, so that the flue gas emitted into the atmosphere is cleaner, the pollution to the atmospheric environment is reduced, the air quality is improved, the stimulation and damage to the respiratory system of the human body are reduced, and the risk of respiratory diseases is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0021] Figure 1 It is a schematic diagram of the overall structure of the present application.
[0022] Figure 2 It is a partial cutaway schematic diagram of the present application.
[0023] Figure 3 It is an enlarged schematic diagram of the denitration structure of the present application.
[0024] Figure 4 It is an exploded schematic diagram of the components inside the denitration tank of the present application.
[0025] Figure 5 It is an enlarged schematic diagram of the dust removal structure of the present application.
[0026] Legend of the drawings:
[0027] 1, molten salt furnace body; 2, feed hopper; 3, smoke outlet pipe; 4, denitration structure; 41, denitration tank; 42, first lower hollow plate; 43, first upper hollow plate; 44, outer partition plate; 45, inner partition plate; 46, outer spray disc; 47, inner spray disc; 48, connecting pipe; 49, liquid inlet pipe; 50, atomizing nozzle; 5, communication pipe; 6, dust removal structure; 61, dust removal tank; 62, partition plate; 63, activated carbon adsorption plate; 64, connecting plate; 65, dust removal bag; 611, second upper hollow plate; 612, second lower hollow plate; 613, negative electrode plate; 614, positive electrode plate; 615, gas outlet pipe; 616, discharge port; 7, support chassis; 8, discharge pipe; 9, support column. DETAILED DESCRIPTION
[0028] In order to make those skilled in the art better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.
[0029] The present application provides a kind of molten salt furnace for realizing flue gas rapid denitration treatment as Figure 1 And Figure 2 As shown in figure, including:
[0030] Molten salt furnace body 1, the upper end surface side of molten salt furnace body 1 is connected with feed hopper 2, the side of feed hopper 2 and located the upper end surface of molten salt furnace body 1 is connected with smoke outlet pipe 3, the outside of molten salt furnace body 1 is fixedly connected with support chassis 7, and the lower end surface of molten salt furnace body 1 is connected with discharge pipe 8 with switch valve in middle position.
[0031] The utility model provides a kind of melt salt furnace for realizing flue gas rapid denitration treatment as Figures 2-4 As shown in a kind of melt salt furnace for realizing flue gas rapid denitration treatment, the smoke outlet of smoke pipe 3 is equipped with denitration structure 4, and the denitration structure 4 includes the denitration box 41 connected to the upper end surface of smoke pipe 3, and the inner surface wall of denitration box 41 is sequentially fixedly connected with first upper hollow plate 43 and first lower hollow plate 42 from top to bottom, and the first upper hollow plate 43 and the first lower hollow plate 42 are connected with outer partition plate 44 and inner partition plate 45, and the outer side of outer partition plate 44 is equipped with outer spray tray 46, and the outer side of inner partition plate 45 is equipped with inner spray tray 47.
[0032] Inner spray tray 47 and outer spray tray 46 are fixedly connected with first upper hollow plate 43 through block, and the lower end surface of inner spray tray 47 and outer spray tray 46 is respectively equidistant and uniformly connected with a plurality of atomizing nozzles 50, and inner spray tray 47 and outer spray tray 46 are connected with connecting pipe 48, and connecting pipe 48 penetrates outer partition plate 44, and the outer side wall of outer spray tray 46 is connected with liquid inlet pipe 49, and the liquid inlet end of liquid inlet pipe 49 penetrates and extends to the outer side of denitration box 41.
[0033] The lower end surface of denitration box 41 is fixedly connected with a plurality of support columns 9, and the plurality of support columns 9 are connected to the upper end surface of melt salt furnace main body 1 through bolts.
[0034] Through the above technical solution:
[0035] Before flue gas emission, flue gas enters denitration box 41 through smoke pipe 3, and enters the chamber separated by two partition plates through the hole of first lower hollow plate 42, then sodium hydroxide solution enters outer spray tray 46 through liquid inlet pipe 49, enters inner spray tray 47 through connecting pipe 48, and finally is sprayed in the chamber by a plurality of atomizing nozzles 50, and the above-mentioned sodium hydroxide solution is atomized into fine particles by spraying mode and sprayed out to contact with flue gas, which can rapidly react with nitrogen oxides in flue gas in a short time, realize rapid denitration treatment, reduce nitrogen oxides emission, effectively reduce the content of nitrogen oxides in flue gas, and avoid the formation of acid rain, photochemical smog and other hazards after entering the atmosphere.
[0036] The utility model provides a kind of melt salt furnace for realizing flue gas rapid denitration treatment as Figure 2 And Figure 5 As shown in a kind of melt salt furnace for realizing flue gas rapid denitration treatment, one side of melt salt furnace main body 1 is equipped with dust removal structure 6, and the dust removal structure 6 includes dust removal box 61 fixedly connected to the outer surface wall of melt salt furnace main body 1 through fixing frame, and the inner surface wall of dust removal box 61 is fixedly connected with partition plate 62, and the inner surface wall of through slot of partition plate 62 is fixedly connected with activated carbon adsorption plate 63.
[0037] The inner wall of the dust removal box 61 is fixedly connected with a connecting plate 64 at the upper end of the partition plate 62, the lower end surface of the connecting plate 64 is connected with a dust removal bag 65 through screws, and a flow-through groove is formed in the connecting plate 64.
[0038] The dust removal structure 6 further comprises a second upper hollow plate 611 movably connected to the inner wall of the dust removal box 61 at the lower end of the partition plate 62, a second lower hollow plate 612 movably connected to the inside of the dust removal box 61 at the lower end of the second upper hollow plate 611, a negative electrode plate 613 and a positive electrode plate 614 arranged between the second upper hollow plate 611 and the second lower hollow plate 612, the negative electrode plate 613 and the positive electrode plate 614 being folded and arranged in an interlaced manner, a gas outlet pipe 615 connected to the front wall of the dust removal box 61, and a discharge port 616 connected to the lower end surface of the dust removal box 61, the discharge port 616 extending through and to the lower end of the fixed frame, and the outer walls of the second upper hollow plate 611 and the second lower hollow plate 612 being respectively connected with sliding blocks, the upper and lower ends of the sliding blocks being connected with springs, and the springs and the sliding blocks being embedded in the embedding grooves provided in the dust removal box 61.
[0039] Further, as shown in Figure 2 and Figure 3 the upper end surface of the denitration box 41 is connected with a communication pipe 5, and the smoke outlet end of the communication pipe 5 is connected with the upper end surface of the dust removal box 61.
[0040] Through the above technical solutions:
[0041] After the flue gas is subjected to denitration treatment, it enters the dust removal box 61 through the communication pipe 5, first enters the dust removal bag 65, and removes particulate matters in the flue gas by filtration, the flue gas subjected to the first dust removal treatment passes through the activated carbon adsorption plate 63 to remove heavy metal pollutants such as mercury in the flue gas, then the flue gas enters the lower half chamber of the dust removal box 61 and contacts the positive electrode plate 614 and the negative electrode plate 613, the flue gas can be adhered between the positive electrode plate 614 and the negative electrode plate 613, and the particulate matters in the flue gas can be collected by electrostatic action, and at the same time, the vibration block (not shown in the figure) is started, the vibration block drives the second upper hollow plate 611 and the second lower hollow plate 612 to vibrate up and down, so that the impurities adhered to the outside of the positive electrode plate 614 and the negative electrode plate 613 fall downward, and finally the impurities are discharged through the discharge port 616, which not only removes the nitrogen oxides in the flue gas before emission, but also effectively removes the particulate matters such as flue dust contained in the flue gas, so that the flue gas emitted into the atmosphere is cleaner.
[0042] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.
Claims
1. A molten salt furnace for rapid denitrification of flue gas, characterized in that, include: The molten salt furnace body (1) has a feeding hopper (2) connected to one side of its upper end face. A smoke outlet pipe (3) is connected to one side of the feeding hopper (2) and located on the upper end face of the molten salt furnace body (1). The smoke outlet of the smoke outlet pipe (3) is provided with a denitrification structure (4). A support base frame (7) is fixedly connected to the outside of the molten salt furnace body (1). A discharge pipe (8) with a switch valve is connected to the middle position of the lower end face of the molten salt furnace body (1). The denitrification structure (4) includes a denitrification box (41) connected to the upper end face of the flue pipe (3). The inner wall of the denitrification box (41) is fixedly connected with a first upper hollow plate (43) and a first lower hollow plate (42) from top to bottom. An outer partition plate (44) and an inner partition plate (45) are connected between the first upper hollow plate (43) and the first lower hollow plate (42). An outer spray plate (46) is provided on the outer side of the outer partition plate (44), and an inner spray plate (47) is provided on the outer side of the inner partition plate (45).
2. The molten salt furnace for rapid denitrification of flue gas according to claim 1, characterized in that: The inner spray plate (47) and the outer spray plate (46) are fixedly connected to the first upper hollow plate (43) by a block, and multiple atomizing nozzles (50) are connected at equal intervals and evenly on the lower end face of the inner spray plate (47) and the outer spray plate (46). A connecting pipe (48) is connected between the inner spray plate (47) and the outer spray plate (46). The connecting pipe (48) passes through the outer partition plate (44). An inlet pipe (49) is connected to the outer side wall of the outer spray plate (46). The inlet end of the inlet pipe (49) passes through and extends to the outside of the denitrification box (41).
3. The molten salt furnace for rapid denitrification of flue gas according to claim 1, characterized in that: A dust removal structure (6) is provided on one side of the molten salt furnace body (1). The dust removal structure (6) includes a dust removal box (61) fixedly connected to the outer wall of the molten salt furnace body (1) by a fixing frame. A partition plate (62) is fixedly connected to the inner wall of the dust removal box (61). An activated carbon adsorption plate (63) is fixedly connected to the inner wall of the through groove of the partition plate (62).
4. A molten salt furnace for rapid denitrification of flue gas according to claim 3, characterized in that: A connecting plate (64) is fixedly connected to the inner wall of the dust collection box (61) and to the upper end of the partition plate (62). A dust collection bag (65) is connected to the lower end of the connecting plate (64) by screws, and a flow groove is provided on the connecting plate (64).
5. A molten salt furnace for rapid denitrification of flue gas according to claim 4, characterized in that: The dust removal structure (6) further includes a second upper perforated plate (611) movably connected to the inner wall of the dust removal box (61) and located at the lower end of the partition plate (62). A second lower perforated plate (612) is movably connected to the lower end of the second upper perforated plate (611) and located inside the dust removal box (61). A negative electrode plate (613) and a positive electrode plate (614) are provided between the second lower perforated plate (612) and the second upper perforated plate (611). The negative electrode plate (613) and the positive electrode plate (614) are folded and arranged in a cross shape. An air outlet pipe (615) is connected to the front wall of the dust removal box (61), and a discharge port (616) is connected to the lower end of the dust removal box (61). The discharge port (616) extends through and to the lower end of the fixed frame.
6. A molten salt furnace for rapid denitrification of flue gas according to claim 1, characterized in that: The upper end of the denitrification box (41) is connected to a connecting pipe (5), and the smoke outlet end of the connecting pipe (5) is connected to the upper end of the dust removal box (61).
7. A molten salt furnace for rapid denitrification of flue gas according to claim 1, characterized in that: The lower end face of the denitrification box (41) is fixedly connected to a plurality of support columns (9), and the plurality of support columns (9) are bolted to the upper end face of the molten salt furnace body (1).