Energy-saving device capable of preheating coal gas on ceramic kiln

Abstract

The utility model belongs to the technical field of ceramic kilns, and discloses an energy-saving device capable of preheating coal gas on a ceramic kiln, which comprises a kiln body, a high-temperature flue gas drainage header pipe and a cold coal gas header pipe, the outer surface of the high-temperature flue gas drainage header pipe is fixedly connected with a high-temperature flue gas branch pipe, and the outer surface of the cold coal gas header pipe is fixedly connected with a cold coal gas branch pipe. A heat exchange box is fixedly installed on the outer surface of the kiln body, a fixing support is fixedly installed in the heat exchange box, and a sliding base is arranged at the top end of the fixing support. By means of the heat exchange box, part of high-temperature flue gas generated during combustion of the kiln is discharged into the heat exchange box through the high-temperature flue gas drainage header pipe, heat exchange is conducted between low-temperature coal gas in the heat exchange pipe and the high-temperature flue gas, then the temperature of the coal gas in the heat exchange pipe is increased, and therefore the combustion efficiency of the coal gas in the kiln is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic kilns, and in particular relates to an energy-saving device capable of preheating coal gas on a ceramic kiln. Background Art

[0002] Ceramic kilns are equipment made of refractory materials and used to burn ceramic products. They produce a variety of exquisite ceramic products such as tableware, vases, sculptures, etc. by sintering raw materials such as clay at high temperatures to solidify them into shape.

[0003] When currently used, existing ceramic kilns generally directly charge low-temperature gas into the kiln for combustion. Since the molecules in the cold gas move relatively slowly, the mixing efficiency with air is relatively low, resulting in incomplete combustion of the gas and a waste of gas resources. Utility Model Content

[0004] The present invention addresses the problem in the prior art that the molecules in the cold coal gas move slowly, the mixing efficiency with the air is low, resulting in incomplete combustion of the coal gas and waste of coal gas resources. The following technical solutions are proposed:

[0005] An energy-saving device for preheating gas on a ceramic kiln comprises: a kiln body, a high-temperature flue gas drainage main pipe and a cold gas main pipe, wherein the outer surface of the high-temperature flue gas drainage main pipe is fixedly connected to a high-temperature flue gas branch pipe, the outer surface of the cold gas main pipe is fixedly connected to a cold gas branch pipe, a heat exchange box is fixedly installed on the outer surface of the kiln body, a fixed bracket is fixedly installed inside the heat exchange box, a slide is provided at the top of the fixed bracket, a T-shaped block is symmetrically fixedly connected to the bottom end of the slide, T-shaped slots are provided inside the fixed bracket at the positions of the two T-shaped blocks, and a heat exchange tube is provided inside the heat exchange box.

[0006] As a preferred embodiment of the above technical solution, the outer surfaces of both ends of the heat exchange tube are symmetrically fixedly connected with fixed blocks, and the four fixed blocks are all clamped inside the fixed bracket.

[0007] As a preferred embodiment of the above technical solution, the high-temperature flue gas branch pipe passes through the heat exchange box and one end of the high-temperature flue gas branch pipe away from the high-temperature flue gas drainage main pipe is arranged inside the heat exchange box.

[0008] As a preferred embodiment of the above technical solution, one end of the cold gas branch pipe away from the cold gas main pipe is engaged with the interior of the fixed bracket and the sliding seat.

[0009] As a preferred embodiment of the above technical solution, a regulating valve is fixedly installed on the outer surface of the high-temperature flue gas drainage main pipe.

[0010] As a preferred embodiment of the above technical solution, the ends of the heat exchange tubes away from the cold gas branch pipes are fixedly connected to connecting tubes, and the ends of the connecting tubes away from the heat exchange tubes are fixedly connected to hot gas output pipes.

[0011] The beneficial effects of the utility model are:

[0012] The utility model sets up a heat exchange box, so that part of the high-temperature flue gas generated during the combustion of the kiln is discharged into the heat exchange box through the high-temperature flue gas drainage main pipe, so that the low-temperature coal gas inside the heat exchange tube exchanges heat with the high-temperature flue gas, thereby increasing the coal gas temperature inside the heat exchange tube, thereby improving its combustion efficiency in the kiln and saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure shows the overall structure of an energy-saving device for preheating coal gas on a ceramic kiln;

[0014] Figure 2 The figure shows the internal structure of a ceramic kiln with an energy-saving device capable of preheating gas.

[0015] Figure 3 The figure shows the internal structure of the heat exchange box of the energy-saving device for preheating gas on a ceramic kiln;

[0016] Figure 4 Shown is a partial structural schematic diagram of an energy-saving device for preheating coal gas on a ceramic kiln;

[0017] Figure 5 Shown is Figure 4 Schematic diagram of the structure of area A.

[0018] In the figure: 1. Kiln body; 2. High-temperature flue gas drainage main pipe; 3. High-temperature flue gas branch pipe; 4. Regulating valve; 5. Cold gas main pipe; 6. Cold gas branch pipe; 7. Heat exchange box; 8. Fixed bracket; 9. Sliding seat; 10. T-shaped block; 11. T-shaped slot; 12. Heat exchange tube; 13. Fixed block; 14. Connecting pipe; 15. Hot gas output pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0020] Example 1

[0021] The utility model provides an energy-saving device for preheating gas on a ceramic kiln. Figures 1 to 5As shown, it includes a kiln body 1, a high-temperature flue gas drainage main pipe 2 and a cold gas main pipe 5. A large amount of high-temperature flue gas will be generated during the combustion of the kiln body 1. The flue gas is discharged into the atmosphere through the flue, but before being discharged, a part of the high-temperature flue gas is introduced into the high-temperature flue gas drainage main pipe 2 for waste heat recovery. The outer surface of the high-temperature flue gas drainage main pipe 2 is fixedly connected with a high-temperature flue gas branch pipe 3, and the outer surface of the cold gas main pipe 5 is fixedly connected with a cold gas branch pipe 6. A heat exchange box 7 is fixedly installed on the outer surface of the kiln body 1, and a fixed bracket 8 is fixedly installed inside the heat exchange box 7. A slide 9 is provided on the top of the fixed bracket 8, and a T-shaped block 10 is symmetrically fixedly connected to the bottom end of the slide 9. T-shaped slots are provided at the positions of the two T-shaped blocks 10 inside the fixed bracket 8. 11. A heat exchange tube 12 is provided inside the heat exchange box 7. One end of the cold gas branch pipe 6 is fitted to one end of the heat exchange tube 12. The outer surfaces of both ends of the heat exchange tube 12 are symmetrically fixed with fixed blocks 13. The four fixed blocks 13 are all clamped into the inside of the fixed bracket 8. The set fixed blocks 13 fix the heat exchange tube 12 inside the heat exchange box 7 to ensure the stability of the heat exchange tube 12. The sliding seat 9 cooperates with the T-shaped block 10 and the T-shaped slot 11 to make the slide seat 9 clamped on the top of the fixed bracket 8, thereby performing a secondary fixation on the heat exchange tube 12. The end of the heat exchange tube 12 away from the cold gas branch pipe 6 is fixedly connected to the connecting pipe 14, and the end of the connecting pipe 14 away from the heat exchange tube 12 is fixedly connected to the hot gas output pipe 15.

[0022] like Figures 1 to 3 As shown, a regulating valve 4 is fixedly installed on the outer surface of the high-temperature flue gas drainage main pipe 2. By controlling the regulating valve 4 to close, the high-temperature flue gas is completely filled into the interior of the heat exchange box 7, thereby allowing the low-temperature coal gas inside the heat exchange tube 12 to be fully heated.

[0023] like Figures 3 to 5 As shown, the high-temperature flue gas branch pipe 3 passes through the heat exchange box 7 and the end of the high-temperature flue gas branch pipe 3 away from the high-temperature flue gas drainage main pipe 2 is arranged inside the heat exchange box 7, and the end of the cold gas branch pipe 6 away from the cold gas main pipe 5 is engaged with the inside of the fixed bracket 8 and the slide seat 9.

[0024] Working principle: When using this device, part of the high-temperature coal gas generated during the combustion of the kiln body 1 is introduced into the high-temperature flue gas drainage main pipe 2, and the regulating valve 4 is controlled to be closed so that the high-temperature flue gas can completely enter the heat exchange box 7 along the high-temperature flue gas branch pipe 3. At the same time, the low-temperature coal gas used for combustion passes through the cold gas main pipe 5 and enters the heat exchange tube 12 along the cold gas branch pipe 6. At this time, the high-temperature flue gas inside the heat exchange box 7 exchanges heat with the low-temperature coal gas inside the heat exchange tube 12, so that the temperature of the low-temperature coal gas inside the heat exchange tube 12 increases, and then the coal gas is preheated to the required temperature, thereby improving the combustion efficiency of the coal gas and saving coal gas resources. The preheated coal gas is transported to the hot coal gas output pipe 15 through the connecting pipe 14, and finally transported to the firing area of ​​the kiln body 1 through the hot gas output pipe 15 for combustion.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. An energy-saving device for preheating gas in a ceramic kiln, characterized in that: include: A kiln body (1), a high-temperature flue gas drainage main pipe (2) and a cold gas main pipe (5); the outer surface of the high-temperature flue gas drainage main pipe (2) is fixedly connected to a high-temperature flue gas branch pipe (3); the outer surface of the cold gas main pipe (5) is fixedly connected to a cold gas branch pipe (6); a heat exchange box (7) is fixedly installed on the outer surface of the kiln body (1); a fixed bracket (8) is fixedly installed inside the heat exchange box (7); a slide seat (9) is provided at the top end of the fixed bracket (8); a T-shaped card block (10) is symmetrically fixedly connected to the bottom end of the slide seat (9); a T-shaped card slot (11) is provided inside the fixed bracket (8) at the position of two T-shaped card blocks (10); and a heat exchange tube (12) is provided inside the heat exchange box (7).

2. The energy-saving device for preheating gas on a ceramic kiln according to claim 1, characterized in that: The outer surfaces of both ends of the heat exchange tube (12) are symmetrically fixedly connected with fixed blocks (13), and the four fixed blocks (13) are all clamped inside the fixed bracket (8).

3. The energy-saving device for preheating gas on a ceramic kiln according to claim 1, characterized in that: The high-temperature flue gas branch pipe (3) passes through the heat exchange box (7), and one end of the high-temperature flue gas branch pipe (3) away from the high-temperature flue gas drainage main pipe (2) is arranged inside the heat exchange box (7).

4. The energy-saving device for preheating gas on a ceramic kiln according to claim 1, characterized in that: One end of the cold gas branch pipe (6) away from the cold gas main pipe (5) is engaged with the interior of the fixed bracket (8) and the sliding seat (9).

5. The energy-saving device for preheating gas on a ceramic kiln according to claim 1, characterized in that: A regulating valve (4) is fixedly mounted on the outer surface of the high-temperature flue gas drainage main pipe (2).

6. The energy-saving device for preheating gas on a ceramic kiln according to claim 1, characterized in that: The ends of the heat exchange tubes (12) away from the cold gas branch pipe (6) are fixedly connected to the connecting pipes (14), and the ends of the connecting pipes (14) away from the heat exchange tubes (12) are fixedly connected to the hot gas output pipes (15).

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