Rotary kiln mechanism with high-temperature and low-temperature flue gas shunting function

Abstract

The utility model discloses a rotary kiln mechanism with high and low temperature flue gas shunting, which comprises a kiln head box, a kiln tail box, a flue gas treatment box and a flue gas shunting box, and a first pipeline connected with the kiln head box and a second pipeline connected with the kiln tail box are respectively arranged on two sides of the flue gas shunting box. A first induced draft fan is installed on the flue gas flow dividing box, an air inducing pipe arranged in the flue gas flow dividing box is installed on the first induced draft fan, and a first exhaust pipe connected with the flue gas treatment box is connected to the first induced draft fan; a second induced draft fan is mounted on the kiln tail box, and a second exhaust pipe connected with the flue gas treatment box is connected to the second induced draft fan; an air blower is mounted on the kiln head box; the control terminal is connected with the first induced draft fan, the second induced draft fan and the air blower in a wireless mode and controls the first induced draft fan, the second induced draft fan and the air blower.

Description

Technical Field

[0001] The utility model relates to the field of rotary kiln mechanisms, in particular to a rotary kiln mechanism with high and low temperature flue gas diversion. Background Art

[0002] Rotary kilns are widely used for calcining clinker, such as calcining cement clinker, ceramsite and other light aggregate production. Rotary kilns are now gradually emerging in the field of high-temperature sintering of solid waste. When in use, the gas inside the rotary kiln is usually due to the different properties of high and low temperature flue gas. The low temperature section is mainly water vapor, supplemented by low temperature decomposition gas, and the high temperature section is prone to produce acidic gas and nitrogen oxides. Acidic gas and nitrogen oxides both affect the environment, and there are extremely strict requirements for their emission. Acidic gas combined with water vapor is highly corrosive, and nitrogen oxides are extremely difficult to decompose at <650℃, so a kiln mechanism that can perform flue gas diversion treatment is required. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing industrial kiln will generate more acidic gas during operation. The acidic gas is highly corrosive and will affect the device and the environment. Therefore, a method is needed to treat the flue gas and reduce the corrosion of the acidic gas to the device. The utility model provides a rotary kiln mechanism with high and low temperature flue gas diversion. The flue gas is first treated by a flue gas diversion box installed between the kiln head box and the kiln tail box to reduce the acidic corrosion of the kiln mechanism itself by the acidic gas generated by the flue gas, and the impact of the acidic gas on the environment can also be effectively prevented. The part of the flue gas treated first is mixed with the low-temperature flue gas in the flue gas treatment box for unified treatment of the flue gas, thereby improving the treatment efficiency of the entire flue gas. The additional liquid storage tank can store the solution that needs to be sprayed to treat the flue gas. The structure is simple and easy to use, which is used to solve the defects caused by the prior art.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A rotary kiln mechanism with high and low temperature flue gas diversion, wherein the rotary kiln mechanism comprises a kiln head box, a kiln tail box, a flue gas treatment box, and a flue gas diversion box, wherein a first pipeline connected to the kiln head box and a second pipeline connected to the kiln tail box are respectively installed on both sides of the flue gas diversion box, a first induced draft fan is installed on the flue gas diversion box, an induced draft duct arranged in the flue gas diversion box is installed on the first induced draft fan, and a first exhaust duct connected to the flue gas treatment box is connected to the first induced draft fan;

[0006] A second induced draft fan is installed on the kiln tail box, and a second exhaust pipe connected to the fume treatment box is connected to the second induced draft fan;

[0007] A blower is installed on the kiln head box;

[0008] A control terminal is wirelessly connected to the first induced draft fan, the second induced draft fan, and the blower and controls the first induced draft fan, the second induced draft fan, and the blower respectively.

[0009] When in use, the blower is used to intake air to guide the flue gas from the kiln head box to the kiln tail box. Since the temperature difference between the kiln head box and the kiln tail box is large, the flue gas will produce acidic gas due to the temperature difference during the movement. In order to reduce the generation of acidic gas, the flue gas at the intersection is directly transported to the flue gas treatment box for flue gas treatment through the first induced draft fan, thereby reducing the acidic gas generated by the flue gas and facilitating subsequent treatment. Finally, the flue gas discharged from the kiln tail box is discharged into the flue gas treatment box through the second induced draft fan for flue gas treatment.

[0010] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein the diameter of the first pipeline is larger than the diameter of the second pipeline, and one end of the first pipeline protruding into the interior of the flue gas diversion box is sleeved on the other end of the second pipeline protruding into the interior of the flue gas diversion box.

[0011] In the above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, the other end of the induced draft duct is arranged at the connection between the first pipeline and the second pipeline.

[0012] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein the first pipeline and the second pipeline are respectively provided with a first solenoid valve and a second solenoid valve, and the control terminal is wirelessly connected to the first solenoid valve and the second solenoid valve respectively and controls the first solenoid valve and the second solenoid valve.

[0013] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein the first pipeline is sealedly connected to the flue gas diversion box and the kiln head box, and the second pipeline is sealedly connected to the flue gas diversion box and the kiln tail box.

[0014] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion also includes a liquid storage tank for placing a solution. An injector connected to the liquid storage tank and partially extending into the interior of the flue gas diversion box is installed on the top of the flue gas diversion box. The control terminal is wirelessly connected to the injector and controls the injector. The solution is a solution for denitrification and desulfurization. The solution is injected into the interior of the flue gas diversion box through the injector to denitrify and desulfurize the flue gas inside the flue gas diversion box so that the flue gas can be subsequently treated, thereby reducing the difficulty of subsequent flue gas treatment.

[0015] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein a flue gas treatment component is provided inside the flue gas treatment box, and the first exhaust duct and the second exhaust duct are respectively connected to the flue gas treatment component.

[0016] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein the kiln head box is connected to an air duct connected to the burner, and the blower is installed on the air duct.

[0017] The technical solution provided by the rotary kiln mechanism with high and low temperature flue gas diversion has the following technical effects:

[0018] The flue gas is first treated by installing a flue gas diversion box between the kiln head box and the kiln tail box to reduce the acid corrosion of the kiln mechanism itself caused by the acid gas generated by the flue gas. The impact of the acid gas on the environment can also be effectively prevented. The first treated part of the flue gas is mixed with the low-temperature flue gas in the flue gas treatment box for unified treatment of the flue gas, thereby improving the treatment efficiency of the entire flue gas. The additional liquid storage tank can store the solution that needs to be sprayed to treat the flue gas. It has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a structural schematic diagram of a rotary kiln mechanism with high and low temperature flue gas diversion.

[0020] The reference numerals are as follows:

[0021] Kiln head box 100, kiln tail box 200, flue gas treatment box 300, flue gas diversion box 400, first pipeline 101, blower 102, second pipeline 201, second induced draft fan 202, second exhaust duct 203, first induced draft fan 401, first exhaust duct 402, ejector 403. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical solutions in the embodiments of the utility model are clearly and completely described below in combination with specific illustrations. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments.

[0023] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0024] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present utility model can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present utility model without affecting the effects and purposes that can be achieved by the present utility model.

[0025] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0026] A preferred embodiment of the utility model is to provide a rotary kiln mechanism with high and low temperature flue gas diversion, the purpose of which is to first treat the flue gas through a flue gas diversion box installed between the kiln head box and the kiln tail box, reduce the acid corrosion of the kiln mechanism itself by the acid gas generated by the flue gas, and effectively prevent the impact of the acid gas on the environment.

[0027] like Figure 1 As shown, a rotary kiln mechanism with high and low temperature flue gas diversion includes a kiln head box 100, a kiln tail box 200, a flue gas treatment box 300, and a flue gas diversion box 400. The two sides of the flue gas diversion box 400 are respectively provided with a first pipeline 101 connected to the kiln head box 100 and a second pipeline 201 connected to the kiln tail box 200. The flue gas diversion box 400 is provided with a first induced draft fan 401. The first induced draft fan 401 is provided with an induced draft duct arranged in the flue gas diversion box 400. The first induced draft fan 401 is connected with a first exhaust duct 402 connected to the flue gas treatment box 300.

[0028] A second induced draft fan 202 is installed on the kiln tail box 200, and a second exhaust duct 203 connected to the fume treatment box 300 is connected to the second induced draft fan 202;

[0029] A blower 102 is installed on the kiln head box 100;

[0030] A control terminal, which is connected to the first induced draft fan 401, the second induced draft fan 202, and the blower 102 via wireless and controls the first induced draft fan 401, the second induced draft fan 202, and the blower 102 respectively;

[0031] When in use, the blower 102 is used to intake air to guide the flue gas from the kiln head box 100 to the kiln tail box 200. Since the temperature difference between the kiln head box 100 and the kiln tail box 200 is large, the flue gas will produce acidic gas due to the temperature difference during the movement. In order to reduce the generation of acidic gas, the flue gas at the intersection is directly transported to the flue gas treatment box 300 for flue gas treatment through the first induced draft fan 401, thereby reducing the acidic gas generated by the flue gas and facilitating subsequent treatment. Finally, the flue gas discharged from the kiln tail box 200 is discharged into the flue gas treatment box 300 through the second induced draft fan 202 for flue gas treatment.

[0032] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein the diameter of the first pipeline 101 is larger than the diameter of the second pipeline 101, and one end of the first pipeline 101 protruding into the interior of the flue gas diversion box 400 is sleeved on the other end of the second pipeline 201 protruding into the interior of the flue gas diversion box 400, so as to facilitate the discharge of part of the flue gas and lead it out to the flue gas treatment box 300 through the first induced draft fan 401.

[0033] In the rotary kiln mechanism with high and low temperature flue gas diversion, the other end of the induced draft duct is arranged at the connection between the first pipeline 101 and the second pipeline 201 to facilitate the flue gas to be led out to the flue gas treatment box 300.

[0034] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein the first solenoid valve and the second solenoid valve are respectively provided on the first pipeline 101 and the second pipeline 201, and the control terminal is wirelessly connected to the first solenoid valve and the second solenoid valve and controls the first solenoid valve and the second solenoid valve respectively, and controls the first pipeline 101 and the second pipeline 201 to control whether they are connected by controlling the first solenoid valve and the second solenoid valve respectively, so as to control the transportation of flue gas.

[0035] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein the first pipeline 101 is sealedly connected with the flue gas diversion box 400 and the kiln head box 100, and the second pipeline 201 is sealedly connected with the flue gas diversion box 400 and the kiln tail box 200 to prevent flue gas leakage.

[0036] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion also includes a liquid storage tank for placing a solution. An injector 403 connected to the liquid storage tank and partially extending into the flue gas diversion box 400 is installed on the top of the flue gas diversion box 400. The control terminal is wirelessly connected to the injector 403 and controls the injector 403. There will be a lot of nitrates and sulfides in the flue gas. The liquid storage tank stores a solution for denitrification and desulfurization. The solution is sprayed into a mist through the injector 403 to denitrify and desulfurize the flue gas in the flue gas diversion box 400.

[0037] The above-mentioned rotary kiln mechanism with high and low temperature flue gas diversion, wherein a flue gas treatment component is provided inside the flue gas treatment box 300, and the first exhaust duct 402 and the second exhaust duct 203 are respectively connected to the flue gas treatment component to facilitate the treatment of the flue gas. The flue gas treatment component includes a flue gas dust collector and a desulfurization and denitrification processor.

[0038] The rotary kiln mechanism with high and low temperature flue gas diversion is characterized in that a duct connected to the burner is connected to the kiln head box, and a blower is installed on the duct to facilitate blowing.

[0039] In summary, the utility model is a rotary kiln mechanism with high and low temperature flue gas diversion, which first treats the flue gas through the flue gas diversion box installed between the kiln head box and the kiln tail box, thereby reducing the acid corrosion of the kiln mechanism itself by the acid gas generated by the flue gas, and can also effectively prevent the impact of the acid gas on the environment. The first treated part of the flue gas is mixed with the low-temperature flue gas in the flue gas treatment box for unified treatment of the flue gas, thereby improving the treatment efficiency of the entire flue gas. The additional liquid storage tank can store the solution that needs to be sprayed to treat the flue gas, and the structure is simple and easy to use.

[0040] The above describes the specific embodiments of the utility model. It should be understood that the utility model is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; those skilled in the art can make various modifications or modifications within the scope of the claims to make some simple deductions, deformations or substitutions, which does not affect the substantive content of the utility model.

Claims

1. A rotary kiln mechanism with high and low temperature flue gas diversion, characterized in that: It comprises a kiln head box, a kiln tail box, a flue gas treatment box, and a flue gas diversion box. A first pipeline connected to the kiln head box and a second pipeline connected to the kiln tail box are respectively installed on both sides of the flue gas diversion box. A first induced draft fan is installed on the flue gas diversion box. An induced draft duct arranged in the flue gas diversion box is installed on the first induced draft fan. The first induced draft fan is connected to a first exhaust duct connected to the flue gas treatment box. A second induced draft fan is installed on the kiln tail box, and a second exhaust pipe connected to the fume treatment box is connected to the second induced draft fan; A blower is installed on the kiln head box; A control terminal is wirelessly connected to the first induced draft fan, the second induced draft fan, and the blower and controls the first induced draft fan, the second induced draft fan, and the blower respectively.

2. A rotary kiln mechanism with high and low temperature flue gas diversion according to claim 1, characterized in that: The diameter of the first pipeline is greater than the diameter of the second pipeline, and one end of the first pipeline protruding into the interior of the smoke diversion box is sleeved on one end of the second pipeline protruding into the interior of the smoke diversion box.

3. A rotary kiln mechanism with high and low temperature flue gas diversion according to claim 2, characterized in that: The other end of the air duct is arranged at the connection between the first pipeline and the second pipeline.

4. A rotary kiln mechanism with high and low temperature flue gas diversion according to claim 3, characterized in that: The first pipeline and the second pipeline are respectively provided with a first solenoid valve and a second solenoid valve, and the control terminal is wirelessly connected to the first solenoid valve and the second solenoid valve respectively to control the first solenoid valve and the second solenoid valve.

5. The rotary kiln mechanism with high and low temperature flue gas diversion according to claim 1, characterized in that: The first pipeline is sealedly connected to the flue gas diversion box and the kiln head box, and the second pipeline is sealedly connected to the flue gas diversion box and the kiln tail box.

6. A rotary kiln mechanism with high and low temperature flue gas diversion according to any one of claims 1 to 5, characterized in that: It also comprises a liquid storage tank for placing solution, an injector which is connected with the liquid storage tank and partially extends into the interior of the smoke diversion box is installed on the top of the smoke diversion box, and the control terminal is wirelessly connected with the injector and controls the injector.

7. A rotary kiln mechanism with high and low temperature flue gas diversion as claimed in claim 6, characterized in that: A flue gas treatment component is disposed inside the flue gas treatment box, and the first exhaust duct and the second exhaust duct are respectively connected to the flue gas treatment component.

8. The rotary kiln mechanism with high and low temperature flue gas diversion as claimed in claim 1, characterized in that: The kiln head box is connected with an air duct connected to the burner, and the blower is installed on the air duct.

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