Two-combustion-chamber heat utilization rotary kiln

Abstract

The utility model relates to dangerous waste treatment, and discloses a secondary combustion chamber heat utilization rotary kiln which comprises a first barrel, a second barrel, a first pipeline and a second pipeline. The feeding cavity is used for feeding dangerous waste into a container of the dangerous waste treatment device for treatment, in the treatment process, waste gas generated in the container enters the combustion cavity and is combusted in the combustion cavity, and heat generated by combustion is used for preheating the dangerous waste needing to be treated subsequently in the feeding cavity. The device has the beneficial effects that the structure is simpler, the efficiency is improved, and energy is saved.

Description

Technical Field

[0001] The utility model relates to hazardous waste treatment, in particular to a rotary kiln with heat utilization in a secondary combustion chamber. Background Art

[0002] Hazardous waste treatment equipment typically uses a rotary kiln as a feed mechanism, feeding the hazardous waste to be treated into a container. During the treatment process, waste gases are generated, requiring further treatment. Furthermore, to improve efficiency, the hazardous waste is typically preheated before entering the container. This results in complex structures, high energy consumption, and generally low treatment efficiency for existing hazardous waste treatment equipment. Utility Model Content

[0003] The present application provides a rotary kiln for utilizing heat from a secondary combustion chamber, which can solve the problems raised in the background technology.

[0004] In the present application, a rotary kiln with heat utilization in a secondary combustion chamber is provided, comprising:

[0005] A first cylinder having a first cavity therein;

[0006] The second cylinder is wrapped around the outside of the first cylinder and forms a second cavity with the outer wall of the first cylinder; the first cylinder and the second cylinder are also able to rotate relative to each other; one of the first cavity and the second cavity is a rotating feeding cavity for hazardous waste to enter, and the other is a fixed combustion cavity for exhaust gas to enter;

[0007] a first pipe, one end of which is connected to the first cavity;

[0008] One end of the second pipe is connected to the second cavity.

[0009] Furthermore, the first cavity is a feeding cavity, and the second cavity is a combustion cavity.

[0010] Furthermore, it also includes a third shell, which covers the protruding part of one end of the first cylinder and forms a third cavity with the outer wall of the first cylinder; the second pipe is connected to the third cavity; the first cylinder also has a fourth cavity between the outer wall and the first cavity; the fourth cavity has a first through hole connected to the third cavity at a position corresponding to the third cavity, and has a second through hole connected to the second cavity at a position corresponding to the second cavity.

[0011] Furthermore, both ends of the first cylinder extend beyond the second cylinder, and the extending portions at both ends are rotational connection positions; and both ends of the second cylinder are fixed connection positions.

[0012] Furthermore, the first through holes cover the entire outer wall of the fourth cavity and are arranged in a circular array.

[0013] Furthermore, the second through holes cover part of the outer wall of the sector ring on the fourth cavity and are arranged in several rows along the axis of the first cylinder.

[0014] In summary, the present application provides a dual-combustion-chamber heat utilization rotary kiln comprising a first barrel, a second barrel, a first conduit, and a second conduit. A feed chamber is used to feed hazardous waste into a container for treatment in a hazardous waste treatment device. During treatment, exhaust gas generated within the container enters the combustion chamber, where it is burned. Heat generated by the combustion is used to preheat the hazardous waste in the feed chamber for subsequent treatment. This has the beneficial effects of a simpler structure, improved efficiency, and energy savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0016] Figure 1 This is a cross-sectional view for practical use;

[0017] Figure 2 A cross-sectional view of the present invention in another configuration;

[0018] Figure 3 for Figure 1 A sectional view of the present invention further arranged on the basis.

[0019] In the figure,

[0020] 1. First cylinder; 1a. First cavity; 1b. Fourth cavity; 1b1. First through hole; 1b2. Second through hole;

[0021] 2. Second cylinder; 2a. Second cavity;

[0022] 3. First pipeline;

[0023] 4. Second pipeline;

[0024] 5. Mounting plate;

[0025] 6. Roller;

[0026] 7. First shell; 7a. Third pipe;

[0027] 8. Spiral blades;

[0028] 9. Second shell;

[0029] 10. Third shell; 10a. Third cavity. DETAILED DESCRIPTION

[0030] The following is further explained in conjunction with the accompanying drawings. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0031] See also Figure 1 and Figure 2 A rotary kiln with heat utilization in two combustion chambers includes: a first cylinder 1, a second cylinder 2, a first pipe 3 and a second pipe 4.

[0032] The interior of the first cylinder 1 is a first cavity 1 a.

[0033] The second barrel 2 is wrapped around the outside of the first barrel 1, and forms a second cavity 2a with the outer wall of the first barrel 1. The first barrel 1 and the second barrel 2 can also rotate relative to each other.

[0034] Of the first and second chambers 1a, 2a, the first chamber 1a can be a combustion chamber, and the second chamber 2a can be a feed chamber. Specifically, the first barrel 1 can be fixedly connected to the mounting bracket of the hazardous waste treatment device via mounting plates 5 at both ends. Two first shells 7 are also fixedly connected to the outer wall of the first barrel 1. The second barrel 2 is fitted with these first shells 7 at both ends, each providing a rotational seal. Rollers 6 are rotatably mounted on the mounting bracket corresponding to the second barrel 2 to support the rotation of the second barrel 2.

[0035] Of the first chamber 1a and the second chamber 2a, the first chamber 1a can be a feeding chamber, and the second chamber 2a can be a combustion chamber. Specifically, both ends of the first cylinder 1 extend beyond the second cylinder 2, and the protruding portions at both ends serve as rotational connection locations. In other words, the mounting frame is provided with rollers 6 that support the rotation of the first cylinder 1 at these two rotational connection locations. The two ends of the second cylinder 2 serve as fixed connection locations, and the two ends of the second cylinder 2 can be fixedly connected to the mounting frame via mounting plates 5.

[0036] One end of the first pipe 3 is connected to the first chamber 1a. One end of the second pipe 4 is connected to the second chamber 2a. Accordingly, the other ends of the first pipe 3 and the second pipe 4 are both connected to the container of the hazardous waste treatment device for treatment.

[0037] See also Figure 2 , combined with the setting that "the first chamber 1a can be a combustion chamber, and the second chamber 2a can be a feeding chamber", one end of the first pipe 3 can be directly fixedly connected to the mounting plate 5 on the corresponding side, thereby connecting to the first chamber 1a; one end of the second pipe 4 can be directly fixedly connected to the first shell 7 on the corresponding side, thereby connecting to the second chamber 2a; a third pipe 7a can be fixedly connected to the other first shell 7, which is used to allow hazardous waste to be processed to enter the second chamber 2a; the inner wall of the second cylinder 2 is provided with a feeding spiral blade 8.

[0038] See also Figure 1 Combined with the setting that "the first chamber 1a can be a feeding chamber and the second chamber 2a can be a combustion chamber", a second shell 9 is fixedly connected to the mounting frame, and the discharging end of the first cylinder 1 enters the second shell 9 to serve as a rotary seal; the other end of the first cylinder 1 is used for feeding, and can be matched with a feed hopper to complete the feeding; one end of the first pipe 3 can be directly fixedly connected to the second shell 9, thereby connecting to the first chamber 1a; one end of the second pipe 4 can be directly fixedly connected to the second cylinder 2, thereby connecting to the second chamber 2a; the inner wall of the first cylinder 1 is provided with a spiral blade 8 for feeding.

[0039] In this way, the feeding chamber is used to feed hazardous waste into a container for hazardous waste treatment equipment for treatment. During the treatment process, the exhaust gas generated in the container enters the combustion chamber and burns in the combustion chamber. The heat generated by the combustion is used to preheat the hazardous waste in the feeding chamber that needs to be treated later, thereby improving efficiency and saving energy.

[0040] Preferably, the setting of "the first cavity 1a can be a feeding cavity, and the second cavity 2a can be a combustion cavity" is adopted. Compared with the setting of "the first cavity 1a can be a combustion cavity, and the second cavity 2a can be a feeding cavity",

[0041] Preheating effect is better and more uniform.

[0042] See also Figure 3 , combined with the setting of "the first chamber 1a can be a feeding chamber, and the second chamber 2a can be a combustion chamber", further, the two-combustion chamber heat utilization rotary kiln also includes: a third shell 10. The third shell 10 is covered on the protruding part of one end of the first cylinder 1, and forms a third chamber 10a with the outer wall of the first cylinder 1. Rotary seals are made between the two end positions of the third shell 10 and the first cylinder 1. The second pipe 4 is connected to the third chamber 10a. Specifically, the second pipe 4 can be directly fixedly connected to the third shell 10. The first cylinder 1 also has a fourth chamber 1b between the outer wall and the first chamber 1a. The fourth chamber 1b has a first through hole 1b1 that is connected at a position corresponding to the third chamber 10a, and a second through hole 1b2 that is connected at a position corresponding to the second chamber 2a.

[0043] The exhaust gas generated in the container enters the fourth chamber 1b through the second pipe 4, and then enters the combustion chamber from the fourth chamber 1b. This makes the second pipe 4 and the first pipe 3 closer together, both located on one side of the mounting plate 5, making the structure more compact and more convenient for connecting to the container for hazardous waste treatment equipment.

[0044] Furthermore, the first through holes 1b1 cover the entire outer wall of the fourth chamber 1b and are arranged in a circular array, so that the exhaust gas from the second pipe 4 can enter the fourth chamber 1b through the first through holes 1b1 during the rotation of the first cylinder 1.

[0045] Second through-holes 1b2 cover a portion of the annular outer wall of fourth chamber 1b. Unlike first through-holes 1b1, second through-holes 1b2 do not completely cover the outer wall. Second through-holes 1b2 are arranged in several rows along the axis of first barrel 1. Exhaust gas from the fourth chamber must enter the combustion chamber through these second through-holes 1b2. Rotation of first barrel 1 facilitates relatively even distribution of the exhaust gas within the combustion chamber.

Claims

1. A rotary kiln with heat utilization in a secondary combustion chamber, characterized in that: include: A first cylinder (1) having a first cavity (1a) therein; The second cylinder (2) is covered on the outside of the first cylinder (1) and forms a second cavity (2a) with the outer wall of the first cylinder (1); the first cylinder (1) and the second cylinder (2) can also rotate relative to each other; of the first cavity (1a) and the second cavity (2a), one is a feeding cavity for hazardous waste to enter and rotate, and the other is a combustion cavity for waste gas to enter and is fixed; A first pipe (3), one end of which is connected to the first cavity (1a); One end of the second pipe (4) is connected to the second cavity (2a).

2. The rotary kiln with heat utilization in two combustion chambers according to claim 1, characterized in that: The first chamber (1a) is a feeding chamber, and the second chamber (2a) is a combustion chamber.

3. The rotary kiln with heat utilization in two combustion chambers according to claim 2, characterized in that: The invention also includes a third shell (10), which covers the protruding portion of one end of the first cylinder (1) and forms a third cavity (10a) with the outer wall of the first cylinder (1); the second pipe (4) is connected to the third cavity (10a); the first cylinder (1) also has a fourth cavity (1b) between the outer wall and the first cavity (1a); the fourth cavity (1b) has a first through hole (1b1) in communication with the third cavity (10a) at a position corresponding to the third cavity (10a), and has a second through hole (1b2) in communication with the second cavity (2a) at a position corresponding to the second cavity (2a).

4. The rotary kiln with heat utilization in two combustion chambers according to claim 2, characterized in that: Both ends of the first cylinder (1) extend beyond the second cylinder (2), and the extended portions at both ends are rotating connection positions; and both ends of the second cylinder (2) are fixed connection positions.

5. The rotary kiln with heat utilization in two combustion chambers according to claim 3, characterized in that: The first through holes (1b1) cover the entire outer wall of the fourth cavity (1b) and are arranged in a circular array.

6. The rotary kiln with heat utilization in two combustion chambers according to claim 3, characterized in that: The second through holes (1b2) cover part of the outer wall of the sector ring on the fourth cavity (1b) and are arranged in several rows along the axis of the first cylinder (1).

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