Kiln smoke buffering device

Abstract

The utility model belongs to the field of carbonization equipment, and particularly relates to a kiln smoke buffering device. Which comprises a buffer tank provided with a flue gas inlet and a flue gas outlet, and is characterized by further comprising at least two flue gas guide pipes, the front ends of the flue gas guide pipes are communicated to the flue gas outlet, and the tail ends of the flue gas guide pipes are communicated to the two sides of a combustion chamber respectively. Liquid components such as tar can be condensed in the buffer pipe and can be conveniently collected and discharged, the smoke guide pipes arranged on the two sides of the combustion chamber enter the combustion chamber and then form vortex through hedging, and combustion is more sufficient.

Description

Technical Field

[0001] The utility model belongs to the field of carbonization equipment, and in particular relates to a buffer device used for the reuse combustion of smoke containing carbonized volatile components of a rotary furnace. Background Art

[0002] In the process of pyrolysis carbonization using a carbonization furnace, some combustible organic volatiles will be produced after the material is pyrolyzed. The usual practice is to recycle and reburn the flue gas rich in the above volatiles to realize the utilization of calorific value. For specific practices, please refer to the rotary kiln pyrolysis carbonization device and process based on flue gas injection and recycling disclosed in Chinese utility model CN202210365152.6.

[0003] However, there are two drawbacks in the cycle:

[0004] 1. The flue gas pressure passing through the induced draft fan is too high, resulting in incomplete combustion when flowing through the combustion chamber, while reducing the oxygen content and affecting the combustion effect;

[0005] 2. The tar contained in the flue gas will condense and precipitate during the circulation process, which will cause pipe blockage over time and affect the operation of the furnace.

[0006] The specification of an improved asphalt thermal regeneration system disclosed in Chinese utility model CN201820894686.7 discloses the use of a flue gas buffer diversion box to buffer and divert the flue gas during the flue gas circulation, which can partially solve the problem of excessive circulating flue gas pressure. However, no further buffer is set before the flue gas enters the combustion chamber after diversion, and the above defects cannot be solved more effectively.

[0007] Therefore, a smoke buffer device is needed to solve the corresponding problems. Utility Model Content

[0008] In order to solve the above technical problems, this application provides a new technical solution:

[0009] A kiln smoke buffer device includes a buffer tank, which is provided with a smoke inlet and a smoke outlet, and is characterized in that it also includes at least two smoke ducts, the front end of the smoke duct is connected to the smoke outlet, and the ends of the smoke duct are respectively connected to the two sides of the combustion chamber. Liquid components such as tar can be condensed in the buffer tube, which is convenient for collection and removal. The smoke ducts on both sides of the combustion chamber are counteracted after entering the combustion chamber to form a vortex, which is conducive to more complete combustion.

[0010] Furthermore, the flue gas inlet is arranged in the middle of the tank body of the buffer tank, and the flue gas outlet is arranged on both sides of the buffer tank. The position of the flue gas outlet is higher than the lowest position of the buffer tank in the vertical direction to prevent the condensed liquid components in the flue gas from flowing into the combustion chamber along the flue gas duct.

[0011] Furthermore, a liquid collecting pipe is provided at the bottom of the buffer tank, which can discharge the liquid components in time, and the smoke can be blocked by setting the liquid collecting pipe as an S-shaped bend pipe and / or installing a valve during implementation.

[0012] Furthermore, a liquid collecting branch pipe is provided at the bottom of the flue gas conduit, and a control valve is provided on the liquid collecting branch pipe to discharge the condensed liquid components in the flue gas conduit. The bottom of the flue gas conduit can be designed to be sunken to prevent the liquid components from flowing into the combustion chamber along the flue gas conduit.

[0013] Furthermore, a regulating valve is provided on the smoke duct to adjust the amount of smoke inflow.

[0014] Furthermore, the tank body of the buffer tank is cylindrical, the tank body is axially flat, the smoke inlet and the liquid collecting pipe are located in the middle of the tank body, and the smoke inlet is connected to the upper side wall thereof, and the liquid collecting pipe is connected to the bottom side wall thereof.

[0015] The bottom side wall of the buffer tank can be designed with an inclination toward the middle to facilitate the liquid components to flow out of the collecting pipe.

[0016] Furthermore, a plurality of smoke outlets are respectively arranged on both sides of the tank body, and the number of smoke outlets arranged on both sides is the same;

[0017] A corresponding number of flue gas ducts are connected to both sides of the tank body. Multiple flue gas ducts disperse the flue gas and send it into the combustion chamber, so that the flue gas burns more fully.

[0018] Furthermore, the liquid collecting branch pipes connected to the flue gas duct on the same side of the tank body are connected in parallel to the same liquid collecting main pipe, and a control main valve is arranged on the liquid collecting main pipe. The liquid collecting main pipe can also be arranged as an S-shaped bend pipe to form a gas-liquid barrier.

[0019] Furthermore, the liquid collecting main pipe is arranged at an angle to facilitate the flow of liquid.

[0020] Furthermore, it also includes a liquid collecting tank, a liquid collecting pipe, and a liquid collecting main pipe, all of which are connected to the liquid collecting tank, so as to centrally collect the liquid components such as tar generated in the section.

[0021] The beneficial effects of this application are:

[0022] By setting up a buffer tank and a flue gas duct, liquid components (such as tar) can condense in the buffer tank, which is convenient for centralized collection and removal, reducing the occurrence of pipe blockage and the impact on the combustion chamber.

[0023] The flue gas ducts disposed on both sides of the combustion chamber can form vortices through collision after entering the combustion chamber, which is conducive to more complete combustion and improved combustion efficiency.

[0024] By configuring the liquid collecting pipe to be an S-shaped bend and / or installing a valve, the liquid components in the flue gas can be blocked to prevent them from flowing into the combustion chamber.

[0025] By controlling the inflow of the flue gas duct through the regulating valve, the flue gas flow rate during the combustion process can be flexibly adjusted as needed to achieve better combustion control.

[0026] By setting a number of flue gas outlets on both sides of the buffer tank and connecting a corresponding number of flue gas ducts, the flue gas can be dispersed and sent into the combustion chamber to promote more complete combustion.

[0027] By setting up liquid collecting tanks, liquid collecting pipes and liquid collecting main pipes, liquid components such as tar generated in the work section can be collected and concentrated for subsequent processing and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A side view schematic diagram of an embodiment of the present application;

[0029] Figure 2 A three-dimensional schematic diagram of an embodiment of the present application;

[0030] Figure 3 This is a schematic diagram of the connection position between the embodiment of the present application and the combustion chamber;

[0031] Figure 4 Schematic diagram of the connection relationship between the embodiment of the present application and the combustion chamber.

[0032] In the figure: 1. buffer tank; 2. smoke inlet pipe; 3. liquid collecting pipe; 4. flue gas duct; 5. regulating valve; 6. liquid collecting branch pipe; 7. control valve; 8. liquid collecting main pipe; 9. main control valve; 10. combustion chamber. DETAILED DESCRIPTION

[0033] like Figure 1-4 As shown: a flue gas buffer device, which is placed before the combustion chamber 10 of the carbonization kiln, supplements the flue gas containing volatiles for auxiliary combustion to achieve the effect of saving external heat sources.

[0034] The device comprises: a flue gas buffer tank 1 which is cylindrical in shape as a whole. The buffer tank 1 is placed flat on a combustion chamber 10 along the axial direction. The heat generated in the combustion chamber 10 can preheat the flue gas in the buffer tank 1.

[0035] A flue gas inlet is provided on the side wall above the middle of the buffer tank 1 to connect to the flue gas inlet pipe 2, and a liquid outlet is provided on the side wall at the middle bottom of the buffer tank 1 to connect to the liquid collecting pipe 3. During implementation, the liquid collecting pipe 3 is set as an S-shaped bend and / or a valve is installed to block the flue gas. The liquid collecting pipe 3 is connected to the liquid collecting tank, which is omitted in the attached drawings.

[0036] Five smoke outlets are respectively provided at the middle positions of both sides (circular side walls) of the buffer tank 1 to connect to the smoke duct 4. A regulating valve 5 is provided on the smoke duct 4, and the smoke intake can be adjusted and controlled separately by the control system or manually. The ends of the smoke duct 4 on each side are respectively connected to different positions on the corresponding side walls of the combustion chamber 10. The positions of the smoke inlets on both sides of the combustion chamber 10 can be arranged in the same row with reference to the attached drawings, or can be staggered up and down, and the openings on both sides are symmetrically arranged.

[0037] The lowest position of each flue gas duct 4 is designed to be sunken and connected to a liquid collecting branch pipe 6. A control valve 7 is arranged on the liquid collecting branch pipe 6. The end of the liquid collecting branch pipe 6 is connected in parallel to a liquid collecting main pipe 8. A main control valve 9 is arranged on the liquid collecting main pipe 8. The liquid collecting main pipe 8 is inclined and flows into a liquid collecting tank.

[0038] In this embodiment, the technical solutions such as the connection flange, valve body installation and selection applied can be implemented by those skilled in the art with reference to the guidance disclosed in the prior art. The bottom of the buffer tank 1 can also be tilted downward to improve the flow of liquid in response to the liquid collection function of the buffer tank 1.

Claims

1. A kiln smoke buffer device, comprising a buffer tank (1), wherein the buffer tank (1) is provided with a smoke inlet and a smoke outlet, and wherein: It also comprises at least two smoke ducts (4), the front ends of the smoke ducts (4) being connected to the smoke outlet, and the ends of the smoke ducts (4) being connected to two sides of the combustion chamber (10) respectively.

2. A kiln smoke buffer device as claimed in claim 1, characterized in that: The smoke inlet is arranged in the middle of the tank body of the buffer tank (1), and the smoke outlet is arranged on both sides of the buffer tank (1), and the position of the smoke outlet is higher than the lowest position of the buffer tank (1) in the vertical direction.

3. A kiln smoke buffer device as claimed in claim 2, characterized in that: A liquid collecting pipe (3) is provided at the bottom of the buffer tank (1).

4. A kiln smoke buffer device as claimed in claim 3, characterized in that: A liquid collecting branch pipe (6) is provided at the bottom end of the flue gas duct (4), and a control valve (7) is provided on the liquid collecting branch pipe (6).

5. A kiln smoke buffer device as claimed in claim 4, characterized in that: The flue gas duct (4) is provided with a regulating valve (5).

6. A kiln smoke buffer device as claimed in any one of claims 3 to 5, characterized in that: The tank body of the buffer tank (1) is cylindrical and is axially flat. The smoke inlet and the liquid collecting pipe (3) are located in the middle of the tank body. The smoke inlet is opened on the upper side wall, and the liquid collecting pipe (3) is connected to the bottom side wall.

7. A kiln smoke buffer device as claimed in claim 6, characterized in that: A plurality of smoke outlets are respectively arranged on both sides of the tank body, and the number of the smoke outlets arranged on both sides is the same; A corresponding number of smoke ducts (4) are connected to both sides of the tank body.

8. A kiln smoke buffer device as claimed in claim 7, characterized in that: The liquid collecting branch pipes (6) connected to the flue gas duct (4) on the same side of the tank body are connected in parallel to the same liquid collecting main pipe (8), and the liquid collecting main pipe (8) is provided with a master control valve (9).

9. A kiln smoke buffer device as claimed in claim 8, characterized in that: The liquid collecting main pipe (8) is arranged inclined.

10. A kiln smoke buffer device as claimed in claim 9, characterized in that: It also comprises a liquid collecting tank, and the liquid collecting pipe (3) and the liquid collecting main pipe (8) are both connected to the liquid collecting tank.

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