Vertical coal injection furnace

Abstract

The invention relates to the technical field of vertical coal injection furnaces, in particular to a vertical coal injection furnace which comprises a furnace body, a smoke outlet pipe is arranged at the top of the furnace body, a purification box is arranged at the bottom end of the smoke outlet pipe, the purification box is hollow, and a supporting plate is arranged in the middle of the top end in the purification box; first inserting grooves are formed in the two sides of the supporting plate and the bottom end in the purifying box; a second slot is formed in the bottom end of the purification plate, a filter screen is inserted into the second slot, and a partition plate is arranged at the top of the filter screen; the vertical coal injection furnace has the beneficial effects that the furnace body is connected with the discharging port of the coal injection machine through the coal feeding port, the coal injection machine injects pulverized coal into the furnace body for suspension combustion, smoke generated by combustion flows upwards through a hot flow and is firstly filtered through a filter screen inserted into a second insertion groove in the bottom of a purification plate, smoke dust is prevented from entering the purification plate, and the smoke dust is prevented from entering the purification plate; afterwards, the flue gas enters the top of the partition through a first isolation net at the top of the partition and reacts with calcium hydroxide placed at the top of the partition.

Description

Technical Field

[0001] The invention relates to the technical field of vertical coal injection furnaces, in particular to a vertical coal injection furnace. Background Art

[0002] Vertical coal injection furnace is an industrial hot air furnace, mainly used to provide high-temperature flue gas, using coal powder as fuel. The coal powder burns in a suspended state under the action of air, and has the advantages of rapid combustion, large capacity, high efficiency, wide adaptability, and convenient control. With the large-scale flue gas heating furnace, the vertical coal injection furnace has great advantages in high-temperature combustion, easy control, and large-scale.

[0003] In the prior art, the coal feeding port of the vertical coal injection furnace is connected to the discharge port of the coal injection machine, and the coal injection machine blows the coal powder and air into the vertical coal injection furnace through the fan blades for suspended combustion.

[0004] However, the combustion of coal in the existing technology will produce a large amount of smoke and carbon dioxide. Carbon dioxide is one of the main greenhouse gases and will cause global climate change. Therefore, coal-fired furnaces are one of the main sources of urban air pollution, especially during the winter heating period, when pollutant emissions increase significantly. Summary of the invention

[0005] The object of the present invention is to provide a vertical coal injection furnace to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a furnace body, a smoke outlet pipe is arranged on the top of the furnace body, a purification box is arranged at the bottom end of the smoke outlet pipe, the interior of the purification box is hollow, and a support plate is arranged in the middle of the top end of the interior of the purification box; a first slot is opened on both sides of the support plate and the inner bottom end of the purification box; and a purification plate, a second slot is opened at the bottom end of the purification plate, a filter net is inserted in the second slot, and a partition is arranged on the top of the filter net.

[0007] Preferably, a coal feeding port is provided at the bottom end of the furnace body, and the coal feeding port can be connected to the discharge port of the coal injection machine, so that coal powder can enter the furnace body through the coal feeding port for suspended combustion. A slag discharge port is provided at the bottom of the furnace body, and the residue and dust produced by the combustion can be discharged from the slag discharge port. A flange is provided on the top of the smoke outlet pipe, and the smoke outlet pipe is connected to the heating pipe through the flange for heating.

[0008] Preferably, one side of the first slot passes through one side of the purification box, the purification plate can be inserted into the interior of the purification box through the first slot and placed at an angle, and a pull rod is provided on one side of the purification plate, and the purification plate can be pulled out of the first slot by pulling the pull rod.

[0009] Preferably, the purification box is provided with an inclined guide column at the bottom of the purification plate, and the cleaning plate is slidably connected to the guide column. A brush is provided on the top of the cleaning plate. The brush is close to the bottom of the filter mesh inserted in the second slot at the bottom of the purification plate. The brush can clean the smoke and dust stuck to the bottom of the filter mesh.

[0010] Preferably, the outer side of the cleaning plate is connected to a push-pull rod, which extends from the inside of the purification box. Pushing and pulling the push-pull rod can drive the cleaning plate to reciprocate on the guide column, so that the brush on the top of the cleaning plate can comprehensively clean the bottom of the filter.

[0011] Preferably, the purification plate is provided with a partition on the top of the filter screen, and calcium hydroxide particles can be placed between the partition and the top of the purification plate. The calcium hydroxide can react with carbon dioxide in the flue gas to convert the carbon dioxide into calcium carbonate and water.

[0012] Preferably, a first isolation net is provided at the top of the partition, and the smoke passing through the filter net can enter the top of the partition through the first isolation net and react with the calcium hydroxide placed in the top of the partition.

[0013] Preferably, a second isolation net is provided at the bottom end of the top of the purification plate, and the flue gas that has passed through the calcium hydroxide reaction on the top of the partition can flow out through the second isolation net and enter the heating pipe through the smoke outlet pipe for heating.

[0014] Preferably, a placement opening is provided at the top of the purification plate, and the calcium hydroxide on the top of the partition can be poured out through the placement opening for replacement.

[0015] Preferably, the purification plate is provided with a telescopic groove on the side of the placement opening, a spring is arranged in the telescopic groove, a closing plate is arranged on the outside of the spring, and the closing plate can close the placement opening to prevent calcium hydroxide from falling from the purification plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a vertical coal-injection furnace, in which the furnace body is connected to the discharge port of the coal-injection machine through a coal-feeding port, and the coal-injection machine sprays coal powder into the furnace body for suspended combustion. The flue gas generated by the combustion flows upward through the heat flow, and first passes through the filter screen plugged in the second slot at the bottom of the purification plate for filtration to prevent smoke and dust from entering the purification plate. Then the flue gas passes through the first isolation screen at the top of the partition and enters the top of the partition, and reacts with the calcium hydroxide placed on the top of the partition, so that the carbon dioxide in the flue gas reacts with sulfur dioxide to generate water, calcium carbonate and calcium sulfite, thereby reducing the discharge of carbon dioxide generated by the combustion of coal powder. Then the flue gas heat flow passes through the second isolation screen at the bottom of the top of the purification plate and is discharged from the purification plate, and then passes through In the heating pipe connected to the flange at the top of the smoke outlet pipe; push-pull rods are arranged on both sides of the purification plate, and the push-pull rods can make the cleaning plate slide on the guide column, so that the brush on the top of the cleaning plate starts to clean the smoke and dust stuck to the bottom of the filter to prevent the smoke and dust from clogging the mesh of the filter; when the calcium hydroxide in the purification plate reacts for a period of time, the purification plate can be pulled out of the support plate by pulling the pull rod, and then the closing plate is pushed toward the inside of the telescopic groove to open the closing plate to close the placement opening, and the water and reactants generated by the calcium hydroxide reaction in the purification plate are poured out, and new calcium hydroxide particles are poured into the purification plate, and the purification plate is inserted into the first slot again to continue to purify the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the purification box of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of another side of the purification box of the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the purification plate of the present invention;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the purification plate of the present invention.

[0023] In the figure: furnace body 1, coal feeding port 2, slag outlet 3, smoke outlet 4, flange 5, purification box 6, purification plate 7, push-pull rod 8, support plate 9, first slot 10, second slot 11, cleaning plate 12, brush 13, guide column 14, filter screen 15, partition 16, first isolation net 17, second isolation net 18, pull rod 19, placement port 20, telescopic slot 21, spring 22, closing plate 23. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 5The present invention provides a technical solution: a furnace body 1, a smoke outlet pipe 4 is arranged on the top of the furnace body 1, a purification box 6 is arranged at the bottom end of the smoke outlet pipe 4, the interior of the purification box 6 is hollow, and a support plate 9 is arranged at the middle of the top end of the interior of the purification box 6; a first slot 10 is opened on both sides of the support plate 9 and the bottom end of the interior of the purification box 6; and a purification plate 7, a second slot 11 is opened at the bottom end of the purification plate 7, a filter screen 15 is inserted in the second slot 11, and a partition plate 16 is arranged on the top of the filter screen 15; a coal feeding port 2 is arranged at the bottom end of the furnace body 1, and the coal feeding port 2 can be connected to the discharge port of the coal injection machine, so that the coal powder can enter the furnace body 1 through the coal feeding port 2 for suspended combustion, and a slag outlet 3 is arranged at the bottom of the furnace body 1, and the residue produced by combustion is discharged. Slag and dust can be discharged from the slag outlet 3, a flange 5 is provided on the top of the smoke outlet pipe 4, and the smoke outlet pipe 4 is connected to the heating pipe through the flange 5 for heating; one side of the first slot 10 passes through one side of the purification box 6, and the purification plate 7 can be inserted into the interior of the purification box 6 through the first slot 10 and placed obliquely, and a pull rod 19 is provided on one side of the purification plate 7, and the purification plate 7 can be pulled out of the first slot 10 by pulling the pull rod 19; the purification box 6 is provided with an inclined guide column 14 at the bottom of the purification plate 7, and a cleaning plate 12 is slidably connected to the guide column 14, and a brush 13 is provided on the top of the cleaning plate 12, and the brush 13 is close to the bottom of the filter screen 15 inserted in the second slot 11 at the bottom of the purification plate 7, and the brush 1 3 can clean the smoke and dust stuck on the bottom of the filter 15; the outer side of the cleaning plate 12 is connected to the push-pull rod 8, and the push-pull rod 8 extends from the inside of the purification box 6. Pushing and pulling the push-pull rod 8 can make the push-pull rod 8 drive the cleaning plate 12 to reciprocate on the guide column 14, so that the brush 13 on the top of the cleaning plate 12 can fully clean the bottom of the filter 15; the purification plate 7 is provided with a partition 16 on the top of the filter 15, and calcium hydroxide particles can be placed between the partition 16 and the top of the purification plate 7. Calcium hydroxide can react with carbon dioxide in the flue gas to convert carbon dioxide into calcium carbonate and water; the top of the partition 16 is provided with a first isolation net 17, and the flue gas passing through the filter 15 can pass through the first isolation net The isolation net 17 enters the top of the partition 16 and reacts with the calcium hydroxide placed in the top of the partition 16; a second isolation net 18 is provided at the bottom of the top of the purification plate 7, and the flue gas that has reacted with the calcium hydroxide on the top of the partition 16 can flow out through the second isolation net 18 and enter the heating pipe through the smoke outlet pipe 4 for heating; a placement port 20 is provided at the top of the top of the purification plate 7, and the calcium hydroxide on the top of the partition 16 can be poured out through the placement port 20 for replacement; a telescopic groove 21 is provided on the side of the placement port 20 of the purification plate 7, a spring 22 is provided in the telescopic groove 21, and a closing plate 23 is provided on the outside of the spring 22, and the closing plate 23 can close the placement port 20 to prevent calcium hydroxide from falling from the purification plate 7.

[0026] In actual use, the furnace body 1 is connected to the discharge port of the coal injection machine through the coal feeding port 2. The coal injection machine sprays coal powder into the furnace body 1 for suspended combustion. The flue gas generated by the combustion flows upward through the heat flow, and first passes through the filter screen 15 plugged in the second slot 11 at the bottom of the purification plate 7 for filtration to prevent smoke from entering the purification plate 7. Then the flue gas passes through the first isolation net 17 at the top of the partition 16 and enters the top of the partition 16, and reacts with the calcium hydroxide placed on the top of the partition 16, so that the carbon dioxide in the flue gas reacts with sulfur dioxide to generate water, calcium carbonate and calcium sulfite, thereby reducing the discharge of carbon dioxide generated by the combustion of coal powder. Then the flue gas heat flow passes through the second isolation net 18 at the bottom of the top of the purification plate 7 and is discharged from the purification plate 7, and then passes through the top flange 5 of the smoke outlet pipe 4 to connect in the heating pipe; push-pull rods 8 are provided on both sides of the purification plate 7, and the push-pull rods 8 can make the cleaning plate 12 slide on the guide column 14, so that the brush 13 on the top of the cleaning plate 12 starts to clean the smoke and dust stuck to the bottom of the filter 15 to prevent the smoke and dust from clogging the mesh of the filter 15; when the calcium hydroxide in the purification plate 7 reacts for a period of time, the purification plate 7 can be pulled out of the first slot 10 by pulling the pull rod 19, and then the closing plate 23 is moved toward the inner side of the telescopic groove 21, so that the closing plate 23 opens and closes the placement port 20, and the water and reactants generated by the calcium hydroxide reaction in the purification plate 7 are poured out, and new calcium hydroxide particles are poured into the purification plate 7, and the purification plate 7 is inserted into the first slot 10 again to continue to purify the flue gas.

[0027] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A vertical coal injection furnace, characterized in that: include: A furnace body (1), a smoke outlet pipe (4) is arranged at the top of the furnace body (1), a purification box (6) is arranged at the bottom end of the smoke outlet pipe (4), the interior of the purification box (6) is hollow, a support plate (9) is arranged at the middle of the top end of the interior of the purification box (6); first slots (10) are provided on both sides of the support plate (9) and at the bottom end of the interior of the purification box (6); and The purification plate (7) has a second slot (11) at the bottom end thereof, a filter screen (15) is inserted into the second slot (11), and a partition plate (16) is arranged on the top of the filter screen (15).

2. A vertical coal injection furnace according to claim 1, characterized in that: The bottom end of the furnace body (1) is provided with a coal feeding port (2), which can be connected to a discharge port of a coal injection machine, so that coal powder can enter the furnace body (1) through the coal feeding port (2) for suspended combustion. The bottom of the furnace body (1) is provided with a slag discharge port (3), and residues and dust generated by combustion can be discharged from the slag discharge port (3). The top of the smoke outlet pipe (4) is provided with a flange (5), and the smoke outlet pipe (4) is connected to a heating pipeline through the flange (5) to provide heat.

3. A vertical coal injection furnace according to claim 2, characterized in that: One side of the first slot (10) passes through one side of the purification box (6); the purification plate (7) can be inserted into the interior of the purification box (6) through the first slot (10) and placed at an angle; a pull rod (19) is provided on one side of the purification plate (7); the purification plate (7) can be pulled out of the first slot (10) by pulling the pull rod (19).

4. A vertical coal injection furnace according to claim 3, characterized in that: The purification box (6) is provided with an inclined guide column (14) at the bottom of the purification plate (7), and a cleaning plate (12) is slidably connected to the guide column (14). A brush (13) is provided on the top of the cleaning plate (12). The brush (13) is closely attached to the bottom of a filter screen (15) inserted in a second slot (11) at the bottom of the purification plate (7), and the brush (13) can clean the smoke and dust attached to the bottom of the filter screen (15).

5. A vertical coal injection furnace according to claim 4, characterized in that: The outer side of the cleaning plate (12) is connected to a push-pull rod (8), which extends from the inside of the purification box (6). By pushing and pulling the push-pull rod (8), the push-pull rod (8) can drive the cleaning plate (12) to move back and forth on the guide column (14), so that the brush (13) on the top of the cleaning plate (12) can fully clean the bottom of the filter screen (15).

6. A vertical coal injection furnace according to claim 5, characterized in that: The purification plate (7) is provided with a partition (16) on the top of the filter screen (15), and calcium hydroxide particles can be placed between the partition (16) and the top of the purification plate (7). The calcium hydroxide can react with carbon dioxide in the flue gas to convert the carbon dioxide into calcium carbonate and water.

7. A vertical coal injection furnace according to claim 6, characterized in that: A first isolation net (17) is provided at the top of the partition (16), and the smoke passing through the filter net (15) can enter the top of the partition (16) through the first isolation net (17) to react with the calcium hydroxide placed in the top of the partition (16).

8. The vertical coal injection furnace according to claim 7, characterized in that: A second isolation net (18) is provided at the bottom of the top of the purification plate (7), and the flue gas that has passed through the calcium hydroxide reaction at the top of the partition (16) can flow out through the second isolation net (18) and enter the heating pipe through the smoke outlet pipe (4) to provide heat.

9. A vertical coal injection furnace according to claim 8, characterized in that: The top of the purification plate (7) is provided with a placement opening (20), and the calcium hydroxide on the top of the partition (16) can be poured out through the placement opening (20) for replacement.

10. The vertical coal injection furnace according to claim 9, characterized in that: The purification plate (7) is provided with a telescopic groove (21) on the side of the placement opening (20), a spring (22) is arranged in the telescopic groove (21), and a closing plate (23) is arranged on the outside of the spring (22). The closing plate (23) can close the placement opening (20) to prevent calcium hydroxide from falling from the purification plate (7).

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