Safety treatment equipment for flue gas of roasting furnace

Abstract

The utility model relates to the field of roasting furnace flue gas treatment, and discloses roasting furnace flue gas safety treatment equipment which comprises a first flue gas pipe and branch pipelines, a plurality of eccentrically arranged branch pipelines are arranged at the bottom of the first flue gas pipe, and a spiral flow deflector used for guiding flue gas is arranged in the first flue gas pipe. The end opening part, connected with the branch pipeline, in the first smoke pipe does not make contact with the edge of the spiral flow deflector, a center rod is fixedly arranged on the spiral flow deflector along the axis, and the two ends of the center rod are locked in the centers of the two ends of the first smoke pipe respectively. The spiral flow deflector is arranged in the first flue gas pipe, the two ends of the first flue gas pipe are provided with the end plugging discs connected through the flanges, the spiral flow deflector can be conveniently disassembled to be cleaned, the upper sleeve used for being inserted into the probing rod after being disassembled is arranged at the upper end of the first flue gas pipe, and the dust accumulation amount is probed through the probing rod at regular intervals; and the spiral flow deflector is timely disassembled to clean dust, so that the allowable safety can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of smoke exhaust of roasting furnaces, and in particular relates to a smoke safety treatment device for roasting furnaces. Background Art

[0002] A roasting furnace is an industrial furnace that is mainly used to heat materials to cause physical or chemical changes. This type of furnace is widely used in many fields such as metal smelting, ceramic manufacturing, and chemical product production. During the roasting process, a lot of flue gas is generated, which usually contains harmful gases such as sulfur dioxide (SO2), nitrogen oxides (NO x ), carbon monoxide (CO), and particulate matter. Therefore, it undergoes multiple purification processes, including desulfurization, denitrification, mercury removal, acid gas removal, and dioxin control. The flue gas from the roaster to the flue gas purification system typically consists of a main flue gas duct and branch flue gas ducts. Multiple branch flue gas ducts are connected to the roaster and then to the main flue gas duct. However, the flue gas entering the main flue gas duct from the branch flue gas ducts often contains a large amount of dust particles. After prolonged operation, these particles accumulate in the main flue gas duct, hindering flue gas discharge and posing a safety hazard. Therefore, how to conveniently and regularly inspect and remove accumulated dust in the main flue gas duct is a worthy research issue. Summary of the Invention

[0003] In order to overcome the technical problems described in the above background technology, the utility model provides a roasting furnace flue gas safety treatment equipment, a spiral guide plate is arranged in the first flue pipe, a center rod is arranged in the center of the spiral guide plate, and the two ends of the first flue pipe are flange-connected end sealing disks, which are convenient for disassembling the spiral guide plate and the center rod for cleaning. The upper end of the first flue pipe is fixed with an upper sleeve for inserting a probe rod after disassembly. The dust accumulation amount is regularly detected by the probe rod, and the spiral guide plate is promptly disassembled to clean the dust, which can effectively improve the allowable safety.

[0004] The technical solution of the present utility model is: a roasting furnace flue gas safety treatment device, including a first flue pipe and a branch pipe, a plurality of branch pipes are provided at the bottom of the first flue pipe, the branch pipes are eccentrically arranged at the bottom of the first flue pipe and the inner wall part of the branch pipe farthest from the axis of the first flue pipe is tangent to the inner wall of the first flue pipe, a spiral guide plate for guiding the flue gas is provided in the first flue pipe, the port part in the first flue pipe that is connected to the branch pipe does not contact the edge of the spiral guide plate, and a center rod is fixedly provided on the spiral guide plate along the axis, and the two ends of the center rod are respectively locked in the center of the two ends of the first flue pipe.

[0005] Furthermore, an upper sleeve communicating with the interior is fixedly provided on the outer side wall of the first flue pipe, and a sealing block is threadedly embedded in the upper sleeve.

[0006] Furthermore, the edge of the spiral guide plate contacts the inner wall of the first flue gas pipe.

[0007] Furthermore, both ends of the first flue gas pipe are respectively connected with end sealing disks through flanges, and an end sleeve is fixedly provided at the center of the end face of the end sealing disk away from the first flue gas pipe. The end sleeve is nested in the end of the center rod and locks the center rod through a pin block.

[0008] Furthermore, an external pipe extending vertically upward is fixedly provided on the upper front end of the first flue gas pipe, a first flange is fixedly provided on the upper end of the external pipe, and the external pipe is connected to the flue gas purification equipment in the factory through the first flange.

[0009] The utility model adopts the above technology, and the beneficial effects produced are:

[0010] 1. The utility model provides a spiral guide plate in the first flue gas pipe, and a center rod is provided in the center of the spiral guide plate. Both ends of the first flue gas pipe are connected by end sealing plates with flanges, which makes it convenient to disassemble the spiral guide plate and the center rod for cleaning. The upper end of the first flue gas pipe is fixed with an upper sleeve for inserting a probe rod after disassembly. The dust accumulation amount is regularly detected by the probe rod, and the spiral guide plate is promptly disassembled to clean the dust, which can effectively improve the allowable safety.

[0011] 2. The utility model eccentrically arranges the branch pipe on the first smoke pipe, which can facilitate the smoke to flow along the inner wall of the first smoke pipe and onto the spiral guide plate, reduce the generation of smoke turbulence, and help improve the circulation of smoke in the first smoke pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 yes Figure 1 A local enlarged schematic diagram of point A in the middle.

[0014] Figure 3 It is the main view of the present utility model.

[0015] Figure 4 It is a left view of the present utility model.

[0016] Figure 5 It is a structural schematic diagram of the utility model after being cut along the vertical plane where the axis of the branch pipe is located on the left side.

[0017] In the figure: 101, first flue gas pipe, 102, first flange, 103, external pipe, 104, branch pipe, 105, second flange, 106, upper sleeve, 107, third flange, 201, blocking block, 301, end blocking plate, 302, end sleeve, 401, pin block, 501, center rod, 502, spiral guide plate, 601, locking bolt. DETAILED DESCRIPTION

[0018] Example 1: Figure 1-Figure 5 As shown, the utility model provides a roasting furnace smoke safety treatment device, including a first smoke pipe 101 and a branch pipe 104, the first smoke pipe 101 is used as the main smoke pipe and a plurality of branch pipes 104 are provided at the bottom thereof, which are connected to the roasting furnace through flanges and connected to the roasting furnace, an external pipe 103 extending vertically upward is fixedly provided on the upper side of the front end of the first smoke pipe 101, a first flange 102 is fixedly provided on the upper end of the external pipe 103, the external pipe 103 is connected to the smoke purification equipment in the factory through the first flange 102, and the branch pipe 104 is eccentrically provided on the first smoke pipe The bottom of the air pipe 101 and the inner wall part of the branch pipe 104 farthest from the axis of the first flue pipe 101 are tangent to the inner wall of the first flue pipe 101. The branch pipe 104 is connected to the roasting furnace through the second flange 105. A spiral guide plate 502 for guiding flue gas is provided in the first flue pipe 101. The port part of the first flue pipe 101 connected to the branch pipe 104 does not contact the edge of the spiral guide plate 502. A center rod 501 is fixedly provided on the spiral guide plate 502 along the axis, and the two ends of the center rod 501 are respectively locked in the center of the two ends of the first flue pipe 101.

[0019] An upper sleeve 106 communicating with the interior is fixedly provided on the outer wall of the first flue gas pipe 101 . The extension line of the axis of the upper sleeve 106 can pass through the upward curved surface of the spiral guide plate 502 .

[0020] A sealing block 201 is threadedly embedded in the upper sleeve 106. The sealing block 201 adopts a structure of a hand-held cross bar at the upper end and a stud at the lower end. The sealing block 201 seals the upper sleeve 106. During regular inspections, after the roasting furnace is closed, the sealing block 201 is rotated and removed, and a probe rod made of cemented carbide is inserted from the outside to the inside through the upper sleeve 106. The surface of the probe rod is rough. After being inserted into the first flue gas pipe 101, it can contact the upward curved surface of the spiral guide plate 502. If there is a lot of dust accumulated on the spiral guide plate 502, after the probe rod is taken out, the lower end of the probe rod will show the length of the contaminated dust. Among the probe rods that have been probed in all the upper sleeves 106 on the first flue gas pipe 101 corresponding to a roasting furnace, as long as there is a probe rod with a length exceeding the marked length, the dust should be cleaned in time.

[0021] In order to improve the diversion and protection effect, a corrosion-resistant coating is provided on the surface of the spiral guide plate 502 , and the edge of the spiral guide plate 502 contacts the inner wall of the first flue gas pipe 101 .

[0022] Both ends of the first flue gas pipe 101 are respectively connected to end sealing disks 301 through flanges. An end sleeve 302 is fixedly provided on the end sealing disk 301 away from the center of the end surface of the first flue gas pipe 101. The end sleeve 302 is nested in the end of the center rod 501 and locks the center rod 501 through the pin block 401.

[0023] Among them, any flange connection is provided with a corresponding high-temperature sealing gasket, which seals the connection, avoids smoke leakage, and improves production safety.

[0024] To clean the dust, first pull out the pin block 401. Then remove the locking bolts 601 between the end sealing disk 301 and the third flange 107 at the end of the first flue pipe 101. After removing the end sealing disks 301 at both ends of the first flue pipe 101, slowly pull out the center rod 501 to remove the spiral guide plate 502 from the first flue pipe 101. After cleaning the accumulated dust on the spiral guide plate 502, reinstall it in the reverse order of disassembly.

Claims

1. A roasting furnace flue gas safety treatment device, comprising a first flue gas pipe and branch pipes, wherein a plurality of branch pipes are provided at the bottom of the first flue gas pipe, characterized in that: The branch pipe is eccentrically arranged at the bottom of the first smoke pipe and the inner wall portion of the branch pipe farthest from the axis of the first smoke pipe is tangent to the inner wall of the first smoke pipe. A spiral guide plate for guiding smoke is provided in the first smoke pipe. The port portion in the first smoke pipe that is connected to the branch pipe does not contact the edge of the spiral guide plate. A center rod is fixedly arranged on the spiral guide plate along the axis, and the two ends of the center rod are respectively locked in the center of the two ends of the first smoke pipe.

2. The roasting furnace flue gas safety treatment equipment according to claim 1, characterized in that: An upper sleeve communicating with the interior is fixedly provided on the outer side wall of the first flue pipe, and a sealing block is threadedly embedded in the upper sleeve.

3. The roasting furnace flue gas safety treatment equipment according to claim 2, characterized in that: The edge of the spiral guide plate contacts the inner wall of the first flue gas pipe.

4. The roasting furnace flue gas safety treatment equipment according to claim 3, characterized in that: Both ends of the first flue gas pipe are respectively connected with end sealing disks through flanges. An end sleeve is fixedly provided at the center of the end surface of the end sealing disk away from the first flue gas pipe. The end sleeve is nested in the end of the center rod and locks the center rod through a pin block.

5. The roasting furnace flue gas safety treatment equipment according to claim 4, characterized in that: An external pipe extending vertically upward is fixedly provided on the upper front end of the first flue gas pipe. A first flange is fixedly provided on the upper end of the external pipe. The external pipe is connected to the flue gas purification equipment in the factory through the first flange.

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