Inner channel type energy-saving high-yield dead-burnt magnesia shaft kiln and firing method thereof

Abstract

The inner channel type energy-saving high-yield dead-burnt magnesia shaft kiln comprises a bottom plate, the left side of the top of the bottom plate is fixedly connected with a dead-burnt magnesia shaft kiln box, and the bottom of the left side of the dead-burnt magnesia shaft kiln box communicates with a discharging pipe. According to the device, the smoke sucker is started, smoke generated in an inner cavity of the dead-burnt magnesia shaft kiln box is pumped through the smoke suction pipe, materials are prevented from entering an inner cavity of the smoke suction pipe through blocking of the blocking net, the smoke is pumped into an inner cavity of the filter box through the smoke suction pipe, the smoke sucker and the smoke outlet pipe, and the smoke is filtered and purified through the smoke filtering and purifying net; a water suction pump is started to pump water in an inner cavity of a water tank through a water suction pipe, the water is pumped into an inner cavity of a transverse pipe through the water suction pipe, the water suction pump and a water outlet pipe, then a flue gas filtering and purifying net is sprayed through a spraying head, the flue gas filtering and purifying net adsorbs a large amount of water, and the flue gas filtering effect can be improved; the filtering efficiency of the flue gas filtering and purifying net can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of magnesia processing, in particular to an inner channel type energy-saving and high-yield heavy-burned magnesia vertical kiln and a firing method thereof. Background Art

[0002] Magnesia, also known as sintered magnesia, is made of magnesite, magnesite or magnesium hydroxide obtained by the reaction of seawater and lime milk and calcined at high temperature. It has strong hydration ability and is mainly used to make alkaline refractory materials, such as magnesia bricks and magnesia-aluminum bricks. Those containing more impurities are used to pave the bottom of steelmaking furnaces. Vertical kiln refers to thermal equipment that continuously calcines clinker with upper loading and lower discharging. It consists of a kiln body, loading and discharging devices and ventilation equipment. It is widely used to calcine various refractory raw materials and lime. Its advantages are less infrastructure investment, less land occupation, high clinker efficiency, low fuel consumption and easy mechanization and automation.

[0003] When magnesia is fired, a dead-burned magnesia vertical kiln is required. The existing dead-burned magnesia vertical kiln does not have the function of filtering the flue gas, resulting in a large amount of flue gas being generated when the dead-burned magnesia vertical kiln is in use. The existing technology directly discharges the flue gas into the air, causing environmental pollution and reducing the environmental protection effect of the dead-burned magnesia vertical kiln. Summary of the invention

[0004] The purpose of the present invention is to provide an inner channel energy-saving and high-yield heavy burned magnesia vertical kiln and a firing method thereof, which has the advantage of being able to filter the flue gas, and solves the problem that the existing heavy burned magnesia vertical kiln does not have the function of filtering the flue gas, resulting in a large amount of flue gas being generated when the heavy burned magnesia vertical kiln is in use, and the existing technology directly discharges the flue gas into the air, causing environmental pollution.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an inner channel energy-saving and high-yield dead-burned magnesia vertical kiln, comprising a bottom plate, a dead-burned magnesia vertical kiln box is fixedly connected to the left side of the top of the bottom plate, a discharge pipe is connected to the bottom of the left side of the dead-burned magnesia vertical kiln box, the inner cavity of the discharge pipe is connected to a discharge valve, a discharge inclined block is fixedly connected to the bottom of the inner wall of the dead-burned magnesia vertical kiln box, both sides of the inner wall of the dead-burned magnesia vertical kiln box are fixedly connected to a burner, the top of the dead-burned magnesia vertical kiln box is connected to a feeding pipe, the top of the feeding pipe is threadedly connected to a threaded cover, and a smoke filter assembly is arranged on the top of the bottom plate.

[0006] As a preferred embodiment, the flue gas filter assembly includes a filter box, the bottom of the filter box is fixedly connected to the center of the top of the bottom plate, the bottom of the left side of the filter box is connected to a smoke outlet pipe, the end of the smoke outlet pipe away from the filter box is connected to a smoke exhaust fan, the left side of the smoke exhaust fan is connected to the exhaust pipe, the left end of the exhaust pipe is connected to the top of the right side of the dead burned magnesia sand vertical kiln box, the bottom of the front of the filter box is connected to a drain pipe, the inner cavity of the drain pipe is connected to a drain valve, the inner cavity of the filter box is fixedly installed with a flue gas filter purification net, the top of the filter box is connected to an exhaust pipe, the right side of the top of the bottom plate is fixedly connected to a water tank, the top of the water tank is connected to a water filling pipe, the bottom of the left side of the water tank is connected to a water suction pipe, the end of the water suction pipe away from the water tank is connected to a water pump, the left side of the water pump is connected to a water outlet pipe, the left end of the water outlet pipe passes through the inner cavity of the filter box and is connected to a transverse pipe, and the bottom of the transverse pipe is connected to a sprinkler head.

[0007] As a preferred solution, the left end of the smoke extraction pipe penetrates into the inner cavity of the dead-burned magnesia vertical kiln box and is provided with a blocking net, and the top and bottom of the blocking net are fixedly mounted to the inner wall of the dead-burned magnesia vertical kiln box by bolts.

[0008] As a preferred solution, a first mounting seat is fixedly connected to the right side of the smoke extractor, and the right side of the first mounting seat is fixedly mounted to the top of the left side of the filter box.

[0009] As a preferred solution, the top and bottom of both sides of the inner wall of the filter box are fixedly connected with limit mounting plates, and the inner side of the limit mounting plate is fixedly mounted to the surface of the smoke filter purification net.

[0010] As a preferred solution, a second mounting seat is fixedly connected to the right side of the water pump, and the right side of the second mounting seat is fixedly mounted to the top of the left side of the water tank.

[0011] As a preferred solution, both sides of the top of the transverse tube are fixedly connected with fixing columns, and the top ends of the fixing columns are fixedly connected to the top of the inner wall of the filter box.

[0012] As a preferred solution, a method for firing and using an inner channel energy-saving and high-yield heavy-burned magnesia sand vertical kiln comprises the following steps: First, unscrew the threaded cover, add the material into the inner cavity of the dead-burned magnesia sand vertical kiln box through the feeding pipe, then tighten the threaded cover, and then start the burner, the burner starts to burn the material, and finally open the discharge valve, and let the material flow out through the discharge inclined block and the discharge pipe, so that the material can be burned; After the materials are fired, a large amount of smoke will be generated. The smoke extractor is started. The smoke generated by the inner cavity of the heavy-burned magnesia vertical kiln box is sucked out by the smoke extractor through the smoke extractor pipe. The smoke is blocked by the blocking net to prevent the materials from entering the inner cavity of the smoke extractor pipe. The smoke is sucked into the inner cavity of the filter box through the smoke extractor pipe, the smoke extractor and the smoke outlet pipe, and the smoke is filtered and purified by the smoke filter purification net. And then start the water pump, which starts to pump water into the inner cavity of the water tank through the water pump pipe. The water is pumped into the inner cavity of the horizontal pipe through the water pump pipe, the water pump and the water outlet pipe, and then sprayed on the flue gas filter purification net through the spray head. The flue gas filter purification net absorbs a large amount of water, which can improve the filtering effect of the flue gas and the filtering efficiency of the flue gas filter purification net. Finally, the filtered air is discharged to the outside of the filter box through the exhaust pipe, which can effectively filter and purify the flue gas, prevent environmental pollution, and improve the environmental protection effect of the heavy-burned magnesia vertical kiln.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The smoke extractor is started, and the smoke extractor is started to draw the smoke generated in the inner cavity of the dead burnt magnesia sand vertical kiln box through the smoke extraction pipe, and the smoke is blocked by the blocking net to prevent materials from entering the inner cavity of the smoke extraction pipe, and the smoke is drawn into the inner cavity of the filter box through the smoke extraction pipe, the smoke extractor and the smoke outlet pipe, and the smoke is filtered and purified by the smoke filter purification net, and the water pump is started to draw water in the water tank cavity through the water extraction pipe, and the water is drawn into the inner cavity of the transverse pipe through the water extraction pipe, the water pump and the water outlet pipe, and then the smoke filter purification net is sprayed through the spray head, and the smoke filter purification net absorbs a large amount of water, which can improve the filtering effect on the smoke, and can improve the filtering efficiency of the smoke filter purification net, and finally the filtered air is discharged to the outside of the filter box through the exhaust pipe, which can effectively filter and purify the smoke, prevent environmental pollution, improve the environmental protection effect of the dead burnt magnesia sand vertical kiln, and achieve the advantage of filtering the smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional cross-sectional view of the internal structure of the filter box of the present invention; Figure 3 This is a front view of the structure cross-section of the present invention; Figure 4 It is a cross-sectional view of the internal structure of the filter box of the present invention.

[0015] In the figure: 1, bottom plate; 2, dead-burned magnesia vertical kiln box; 3, discharge pipe; 4, discharge valve; 5, discharge inclined block; 6, burner; 7, feeding pipe; 8, threaded cover; 9, flue gas filter assembly; 91, filter box; 92, smoke outlet pipe; 93, smoke exhaust fan; 94, smoke exhaust pipe; 95, drain pipe; 96, drain valve; 97, flue gas filter purification net; 98, exhaust pipe; 99, water tank; 910, water supply pipe; 911, water pump; 912, water pump; 913, water outlet pipe; 914, horizontal pipe; 915, sprinkler head; 916, blocking net; 917, first mounting seat; 918, limit mounting plate; 919, second mounting seat; 920, fixing column. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0017] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Embodiment 1:

[0018] See also Figure 1-Figure 4 As shown, the present invention provides an inner channel energy-saving and high-yield dead-burned magnesia vertical kiln, comprising a bottom plate 1, a dead-burned magnesia vertical kiln box 2 is fixedly connected to the left side of the top of the bottom plate 1, a discharge pipe 3 is connected to the bottom of the left side of the dead-burned magnesia vertical kiln box 2, the inner cavity of the discharge pipe 3 is connected to a discharge valve 4, a discharge inclined block 5 is fixedly connected to the bottom of the inner wall of the dead-burned magnesia vertical kiln box 2, both sides of the inner wall of the dead-burned magnesia vertical kiln box 2 are fixedly connected to a burner 6, the top of the dead-burned magnesia vertical kiln box 2 is connected to a feeding pipe 7, the top of the feeding pipe 7 is threadedly connected to a threaded cover 8, and a smoke filter assembly 9 is arranged on the top of the bottom plate 1.

[0019] Through the above technical solution, by setting the smoke filter assembly 9, the smoke is filtered and purified, avoiding the problem of direct emission of smoke causing environmental pollution, and improving the environmental protection effect. Embodiment 2:

[0020] Based on the first embodiment, the present invention is as follows Figure 1-Figure 4As shown, the smoke filter assembly 9 includes a filter box 91, the bottom of the filter box 91 is fixedly connected to the center of the top of the bottom plate 1, the bottom of the left side of the filter box 91 is connected to a smoke outlet pipe 92, the end of the smoke outlet pipe 92 away from the filter box 91 is connected to a smoke exhaust machine 93, the left side of the smoke exhaust machine 93 is connected to a smoke exhaust pipe 94, the left end of the smoke exhaust pipe 94 is connected to the top of the right side of the dead-burned magnesia vertical kiln box 2, the bottom of the front side of the filter box 91 is connected to a drain pipe 95, the inner cavity of the drain pipe 95 is connected to a drain valve 96, and the inner cavity of the filter box 91 is fixedly installed It is equipped with a flue gas filter and purification net 97, the top of the filter box 91 is connected to an exhaust pipe 98, the right side of the top of the bottom plate 1 is fixedly connected to a water tank 99, the top of the water tank 99 is connected to a water adding pipe 910, the bottom of the left side of the water tank 99 is connected to a water pump 911, the end of the water pump 911 away from the water tank 99 is connected to a water pump 912, the left side of the water pump 912 is connected to a water outlet pipe 913, the left end of the water outlet pipe 913 passes through the inner cavity of the filter box 91 and is connected to a transverse pipe 914, and the bottom of the transverse pipe 914 is connected to a sprinkler head 915.

[0021] Through the above technical solution, the left end of the smoke extraction pipe 94 passes through the inner cavity of the dead-burned magnesia sand vertical kiln box 2 and is provided with a blocking net 916. The top and bottom of the blocking net 916 are fixedly installed with the inner wall of the dead-burned magnesia sand vertical kiln box 2 by bolts. The right side of the smoke extractor 93 is fixedly connected with a first mounting seat 917. The right side of the first mounting seat 917 is fixedly installed with the top of the left side of the filter box 91. The top and bottom of both sides of the inner wall of the filter box 91 are fixedly connected with a limited mounting plate 918. The inner side of the limited mounting plate 918 is fixedly installed with the surface of the flue gas filter purification net 97. The right side of the water pump 912 is fixedly connected with a second mounting seat 919. The right side of the second mounting seat 919 is fixedly installed with the top of the left side of the water tank 99. Both sides of the top of the transverse pipe 914 are fixed. A fixing column 920 is connected, and the top of the fixing column 920 is fixedly connected to the top of the inner wall of the filter box 91. By setting a blocking net 916, it can prevent materials from entering the inner cavity of the smoke extraction pipe 94. By setting a first mounting seat 917, it can facilitate the fixed installation and disassembly of the smoke extractor 93. By setting a limiting mounting plate 918, it can limit the installation of the flue gas filter purification net 97, and facilitate the installation of the flue gas filter purification net 97. By setting a second mounting seat 919, it can facilitate the fixed installation and disassembly of the water pump 912. By setting a fixing column 920, the transverse tube 914 and the spray head 915 can be fixedly supported, thereby increasing the stability of the transverse tube 914 and the spray head 915 when in use.

[0022] A method for firing and using an inner channel type energy-saving and high-yield heavy-burned magnesia sand vertical kiln, the method comprising the following steps: First, unscrew the threaded cover 8, add the material into the inner cavity of the dead-burned magnesia sand vertical kiln box 2 through the feeding pipe 7, then tighten the threaded cover 8, and then start the burner 6, the burner 6 starts to burn the material, and finally open the discharge valve 4, and the material flows out through the discharge inclined block 5 and the discharge pipe 3, so that the material can be burned; After the material is fired, a large amount of smoke is generated. The smoke extractor 93 is started. The smoke extractor 93 is started to draw the smoke generated in the inner cavity of the heavy-burned magnesia vertical kiln box 2 through the smoke pipe 94. The smoke is blocked by the blocking net 916 to prevent the material from entering the inner cavity of the smoke pipe 94. The smoke is drawn into the inner cavity of the filter box 91 through the smoke pipe 94, the smoke extractor 93 and the smoke outlet pipe 92, and the smoke is filtered and purified by the smoke filter purification net 97. Then start the water pump 912, which starts to pump water from the inner cavity of the water tank 99 through the water pump pipe 911. The water is pumped into the inner cavity of the horizontal pipe 914 through the water pump pipe 911, the water pump 912 and the water outlet pipe 913. The flue gas filter purification net 97 is then sprayed through the spray head 915. The flue gas filter purification net 97 absorbs a large amount of water, which can improve the filtering effect of the flue gas and the filtering efficiency of the flue gas filter purification net 97. Finally, the filtered air is discharged to the outside of the filter box 91 through the exhaust pipe 98, which can effectively filter and purify the flue gas, prevent environmental pollution, and improve the environmental protection effect of the heavy-burned magnesia vertical kiln, thereby achieving the advantage of filtering the flue gas.

[0023] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0024] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An inner channel type energy-saving and high-yield heavy-burning magnesia vertical kiln, comprising a bottom plate (1), characterized in that: A dead-burned magnesia vertical kiln box (2) is fixedly connected to the left side of the top of the bottom plate (1), a discharge pipe (3) is connected to the bottom of the left side of the dead-burned magnesia vertical kiln box (2), and the inner cavity of the discharge pipe (3) is connected to a discharge valve (4), a discharge inclined block (5) is fixedly connected to the bottom of the inner wall of the dead-burned magnesia vertical kiln box (2), a burner (6) is fixedly connected to both sides of the inner wall of the dead-burned magnesia vertical kiln box (2), a feeding pipe (7) is connected to the top of the dead-burned magnesia vertical kiln box (2), and a threaded cover (8) is threadedly connected to the top of the bottom plate (1), and a smoke filter assembly (9) is arranged on the top of the bottom plate (1).

2. The inner channel type energy-saving and high-yield heavy-burned magnesia vertical kiln according to claim 1, characterized in that: The smoke filter assembly (9) comprises a filter box (91), the bottom of the filter box (91) is fixedly connected to the center of the top of the bottom plate (1), the bottom of the left side of the filter box (91) is connected to a smoke outlet pipe (92), the end of the smoke outlet pipe (92) away from the filter box (91) is connected to a smoke extractor (93), the left side of the smoke extractor (93) is connected to a smoke extractor pipe (94), the left end of the smoke extractor pipe (94) is connected to the top of the right side of the dead-burned magnesia vertical kiln box (2), the bottom of the front side of the filter box (91) is connected to a drain pipe (95), the inner cavity of the drain pipe (95) is connected to a drain valve (96), and the inner cavity of the filter box (91) is fixedly installed with a smoke filter. The air filter purification net (97) is connected to an exhaust pipe (98) at the top of the filter box (91), a water tank (99) is fixedly connected to the right side of the top of the bottom plate (1), the top of the water tank (99) is connected to a water supply pipe (910), the bottom of the left side of the water tank (99) is connected to a water extraction pipe (911), the end of the water extraction pipe (911) away from the water tank (99) is connected to a water extraction pump (912), the left side of the water extraction pump (912) is connected to a water outlet pipe (913), the left end of the water outlet pipe (913) passes through the inner cavity of the filter box (91) and is connected to a transverse pipe (914), and the bottom of the transverse pipe (914) is connected to a spray head (915).

3. The inner channel type energy-saving and high-yield heavy-burned magnesia vertical kiln according to claim 2, characterized in that: The left end of the smoke extraction pipe (94) penetrates into the inner cavity of the dead-burned magnesia vertical kiln box (2) and is provided with a blocking net (916), and the top and bottom of the blocking net (916) are fixedly mounted to the inner wall of the dead-burned magnesia vertical kiln box (2) by bolts.

4. The inner channel type energy-saving and high-yield heavy-burned magnesia vertical kiln according to claim 2, characterized in that: The right side of the smoke extractor (93) is fixedly connected to a first mounting seat (917), and the right side of the first mounting seat (917) is fixedly mounted to the top of the left side of the filter box (91).

5. The inner channel type energy-saving and high-yield heavy-burned magnesia vertical kiln according to claim 2, characterized in that: The top and bottom of both sides of the inner wall of the filter box (91) are fixedly connected to a limit mounting plate (918), and the inner side of the limit mounting plate (918) is fixedly mounted to the surface of the smoke filter purification net (97).

6. The inner channel type energy-saving and high-yield heavy-burned magnesia vertical kiln according to claim 2, characterized in that: The right side of the water pump (912) is fixedly connected to a second mounting seat (919), and the right side of the second mounting seat (919) is fixedly mounted to the top of the left side of the water tank (99).

7. The inner channel type energy-saving and high-yield heavy-burned magnesia vertical kiln according to claim 2, characterized in that: Both sides of the top of the transverse tube (914) are fixedly connected with fixing columns (920), and the top ends of the fixing columns (920) are fixedly connected to the top of the inner wall of the filter box (91).

8. A method for firing and using an inner channel type energy-saving and high-yield heavy-burned magnesia vertical kiln, characterized in that: The firing method includes the following steps: First, the threaded cover (8) is unscrewed, and the material is added into the inner cavity of the dead-burned magnesia sand vertical kiln box (2) through the feeding pipe (7), and then the threaded cover (8) is tightened, and then the burner (6) is started, and the burner (6) is started to burn the material, and finally the discharge valve (4) is opened, and the material is allowed to flow out through the discharge inclined block (5) and the discharge pipe (3), so that the material can be burned; After the material is fired, a large amount of smoke is generated. The smoke extractor (93) is started. The smoke extractor (93) is started to draw the smoke generated in the inner cavity of the heavy-burned magnesia vertical kiln box (2) through the smoke extraction pipe (94). The smoke is blocked by the blocking net (916) to prevent the material from entering the inner cavity of the smoke extraction pipe (94). The smoke is drawn into the inner cavity of the filter box (91) through the smoke extraction pipe (94), the smoke extractor (93) and the smoke outlet pipe (92). The smoke is filtered and purified by the smoke filter purification net (97); Then, the water pump (912) is started, and the water pump (912) is started to pump water from the inner cavity of the water tank (99) through the water pumping pipe (911). The water is pumped into the inner cavity of the horizontal pipe (914) through the water pumping pipe (911), the water pump (912) and the water outlet pipe (913). The water is then sprayed on the flue gas filter purification net (97) through the spray head (915). The flue gas filter purification net (97) absorbs a large amount of water, which can improve the filtering effect of the flue gas and the filtering efficiency of the flue gas filter purification net (97). Finally, the filtered air is discharged to the outside of the filter box (91) through the exhaust pipe (98), which can effectively filter and purify the flue gas, prevent environmental pollution, and improve the environmental protection effect of the dead-burned magnesia vertical kiln.

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