Novel full-premixing burner for cracking furnace

Abstract

The utility model relates to the technical field of full-premixing combustors, in particular to a novel full-premixing combustor for a cracking furnace, which comprises a bearing frame, a gas inlet pipe, a gas inlet component, a gas pump, a gas outlet pipe and a co-combustion component, a gas pipe is arranged on the lower side of the co-combustion component, a heat circulating pipe is arranged at one end of the co-combustion component, and a gas outlet pipe is arranged at the other end of the co-combustion component. A fan is installed at one end of the heat circulating pipe, a heat circulating pipe is arranged at the position, close to the heat circulating pipe, of one end of the mixed combustion component, an oxygen tank is installed at one end of the upper side of the bearing frame, and an oxygen pipe is arranged on the upper side of the oxygen tank. Heat in the mixed combustion component is circulated into the air inlet component, extracted air is preheated, the influence on the mixed combustion temperature of the combustor is avoided, oxygenation operation is conducted on the air inlet component through the oxygen tank and the oxygen pipe, the completeness of gas combustion is facilitated, gas and entering gas are mixed through the mixed combustion component, and the uniformity of gas combustion is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of full premix burners, in particular to a novel full premix burner for a cracking furnace. Background Art

[0002] A cracking furnace refers to equipment used to crack hydrocarbons. A fully premixed burner in a cracking furnace consists of a mixing device and a head. A fully premixed burner fully mixes gas and air before igniting the gas, then discharges the resulting mixed gas and ignites it. For example, a Chinese patent discloses a fully premixed burner for a cracking furnace (authorization announcement number CN220229149U). This patented technology uses an additional air guide main pipe to concentrate air after it is drawn in. Gas is then introduced through a gas through-pipe and mixed with the concentrated air. The mixed gas then enters the air guide sub-pipe and spiral pipe for full mixing, improving the uniformity of the gas-air mixture and the quality of combustion.

[0003] However, the existing fully premixed burners for cracking furnaces still have some defects that need to be improved in practical applications, such as:

[0004] 1. Directly extracting external air for fuel combustion operation, the external air temperature is low, resulting in a decrease in the temperature inside the burner mixing tube, affecting the mixing effect;

[0005] 2. The oxygen content in the external air is insufficient to fully burn the fuel, which is not conducive to the complete combustion of the gas and causes energy waste. Therefore, those skilled in the art provide a new type of full premix burner for cracking furnace to solve the problems raised in the above background technology. Utility Model Content

[0006] The purpose of the utility model is to provide a new type of full premix burner for a cracking furnace to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A novel full premix burner for a cracking furnace comprises a carrier, an air inlet pipe, an air inlet component, an air pump, an air outlet pipe and a combustion-mixing component, wherein the air inlet pipe is located at the rear end of the carrier, the air inlet component is located at the upper end of the air inlet pipe, the air pump is located at the lower end of the air inlet pipe, the air outlet pipe is located at the front end of the carrier, and the combustion-mixing component is located at the upper end of the air outlet pipe;

[0009] A gas pipe is provided on the lower side of the mixed combustion component, a heat circulation pipe is provided at one end of the mixed combustion component, a fan is installed at one end of the heat circulation pipe, a heat circulation outlet pipe is provided at one end of the mixed combustion component near the heat circulation pipe, an oxygen tank is installed at one end of the upper side of the support frame, and an oxygen pipe is provided on the upper side of the oxygen tank.

[0010] As a further solution of the present invention: the air intake component includes an air intake cylinder, a filter is provided on the upper side of the air intake cylinder, filter cotton is provided at the upper end position of the interior of the air intake cylinder, a heat exchange ring is installed at the lower end position of the interior of the air intake cylinder, a solenoid valve is installed at one end of the oxygen pipe near the air intake cylinder, the mixed combustion component includes a mixed combustion pipe, a cover is provided at one end position of the outer side of the mixed combustion pipe, a coil is provided on the inner side of the cover, an igniter is installed at the inner side of the mixed combustion pipe near the cover, a gas output ring is installed inside the mixed combustion pipe, a stirring blade is provided on the inner side of the gas output ring, and a motor is installed at the position of the stirring blade on one side of the supporting frame.

[0011] As a further solution of the present invention: the output end of the air intake component is connected to the input end of the air intake pipe, the output end of the air intake pipe is connected to the input end of the air pump, the output end of the air pump is connected to the input end of the air outlet pipe, and the output end of the air outlet pipe is connected to the input end of the mixed combustion component.

[0012] As a further solution of the present invention: the output end of the oxygen tank is connected to the input end of the oxygen tube, and the output end of the oxygen tube is connected to the input end of the air intake component.

[0013] As a further solution of the present invention: the output end of the oxygen tube is connected to the upper end of the air inlet cylinder through an electromagnetic valve, the output end of the gas tube is connected to the input end of the gas output ring, the output end of the gas output ring is connected to the inside of the mixed combustion tube, and the stirring blade is rotated by a motor at the inner position of the gas output ring.

[0014] As a further solution of the present invention: the output end of the coil is connected to the input end of the heat circulation tube, the output end of the heat circulation tube is connected to the input end of the heat exchange ring through the fan, the output end of the heat exchange ring is connected to the input end of the heat circulation pipe, and the output end of the heat circulation pipe is connected to the input end of the coil.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. A new type of fully premixed burner for cracking furnaces circulates the heat inside the co-combustion component to the inside of the air intake component to preheat the extracted air, increase the temperature of the incoming air, avoid affecting the co-combustion temperature of the burner, and improve the co-combustion effect;

[0017] 2. A new type of fully premixed burner for cracking furnaces, which increases oxygen to the air intake components through oxygen tanks and oxygen pipes, improves the combustion-supporting effect of the fuel, is beneficial to the completeness of gas combustion, saves energy, and mixes the gas with the incoming gas through the mixing component to improve the uniformity of gas combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a new type of full premixed burner for cracking furnace;

[0019] Figure 2 This is a perspective view of a new type of fully premixed burner for a cracking furnace;

[0020] Figure 3 A perspective view of an air inlet component in a new type of fully premixed burner for a cracking furnace;

[0021] Figure 4 This is a perspective view of the mixed combustion components in a new type of full premixed burner for a cracking furnace.

[0022] In the figure: 1. Support frame; 2. Air inlet pipe; 3. Air inlet component; 4. Air pump; 5. Air outlet pipe; 6. Co-combustion component; 7. Gas pipe; 8. Heat circulation pipe; 9. Fan; 10. Heat circulation pipe; 11. Oxygen tank; 12. Oxygen pipe; 13. Air inlet cylinder; 14. Filter; 15. Filter cotton; 16. Heat exchange ring; 17. Solenoid valve; 18. Co-combustion pipe; 19. Cover; 20. Coil; 21. Ignitor; 22. Gas output ring; 23. Stirring blade; 24. Motor. DETAILED DESCRIPTION

[0023] See also Figures 1 to 4In the embodiment of the present invention, a new type of full premixed burner for a cracking furnace includes a carrier 1, an air inlet pipe 2, an air inlet component 3, an air pump 4, an air outlet pipe 5 and a mixed combustion component 6. The air inlet pipe 2 is located at the rear end of the carrier 1, the air inlet component 3 is located at the upper end of the air inlet pipe 2, the air pump 4 is located at the lower end of the air inlet pipe 2, the air outlet pipe 5 is located at the front end of the carrier 1, the mixed combustion component 6 is located at the upper end of the air outlet pipe 5, and a gas pipe 7 is provided on the lower side of the mixed combustion component 6. A heat circulation pipe 8 is provided at one end, a fan 9 is installed at one end of the heat circulation pipe 8, a heat circulation outlet pipe 10 is provided at one end of the mixed combustion component 6 near the position of the heat circulation pipe 8, an oxygen tank 11 is installed at one end of the upper side of the carrier 1, an oxygen tube 12 is provided on the upper side of the oxygen tank 11, the output end of the air intake component 3 is connected to the input end of the air intake pipe 2, the output end of the air intake pipe 2 is connected to the input end of the air pump 4, the output end of the air pump 4 is connected to the input end of the air outlet pipe 5, and the output end of the air outlet pipe 5 is connected to the input end of the air outlet pipe 5. 12 and 13 are connected. The output of oxygen tank 11 and oxygen pipe 12 are connected, and the output of oxygen pipe 12 and oxygen intake member 3 are connected. At first, one end of fuel gas pipe 7 is accessed to fuel gas tank, and oxygen is filled into the inside of oxygen tank 11 for standby use. One end of fuel gas pipe 7 is accessed to cracking furnace. Then, start to use. Air pump 4 is operated to extract external air by intake member 3. Filtered air is imported into the inside of fuel gas pipe 5 by gas outlet pipe 5. Gas is imported into the inside of fuel gas pipe 6 by gas pipe 7. 6 pairs of fuel gas and air of deriving are mixed by fuel gas pipe 7. 6 operations of fuel gas pipe 7 ignite air and gas mixture. The heat that 6 inner fuel gas of fuel gas pipe 7 produces is heated. Heat is imported into the inside of intake member 3 by heat circulation pipe 8 and blower fan 9. To the air preheating of intake member 3 inside, the heat of intake member 3 inside is circulated to the inside of fuel gas pipe 10 and heats again. The oxygen of oxygen tank 11 insides is operated by oxygen pipe 12 to the inside oxygenation of intake member 3.

[0024] exist Figure 2 、 34: The air intake component 3 includes an air intake cylinder 13, a filter screen 14 is provided on the upper side of the air intake cylinder 13, a filter cotton 15 is provided at the upper end position of the interior of the air intake cylinder 13, a heat exchange ring 16 is installed at the lower end position of the interior of the air intake cylinder 13, an electromagnetic valve 17 is installed at one end of the oxygen tube 12 near the position of the air intake cylinder 13, the mixed combustion component 6 includes a mixed combustion pipe 18, a cover 19 is provided at one end position of the outer side of the mixed combustion pipe 18, a coil 20 is provided on the inner side of the cover 19, and an igniter 21 is installed at the position of the inner side of the mixed combustion pipe 18 near the cover 19. A gas output ring 22 is installed inside the mixed combustion pipe 18, and a stirring blade 23 is provided on the inner side of the gas output ring 22. A motor 24 is installed at the position of the stirring blade 23 on one side of the carrier 1. The output end of the oxygen tube 12 is connected to the upper end of the air inlet cylinder 13 through the solenoid valve 17, and the output end of the gas pipe 7 is connected to the input end of the gas output ring 22. The output end of the gas output ring 22 is connected to the inside of the mixed combustion pipe 18. The stirring blade 23 is rotated at the inner position of the gas output ring 22 by the motor 24. The output end of the coil 20 is connected to the heat circulation pipe The input end of the heat circulation pipe 8 is connected to the input end of the heat exchange ring 16 through the fan 9, the output end of the heat exchange ring 16 is connected to the input end of the heat circulation pipe 10, and the output end of the heat circulation pipe 10 is connected to the input end of the coil 20. The air pump 4 draws external air through the air intake component 3, the filter 14 and the filter cotton 15 filter the air, and the filtered air is introduced into the interior of the mixed combustion pipe 18 through the outlet pipe 5. The gas is introduced into the interior of the mixed combustion pipe 18 through the gas pipe 7 and the gas output ring 22. The motor 24 drives the stirring The mixing blades 23 rotate to mix the gas output from the gas output ring 22 with the air, the igniter 21 operates to ignite the air and gas mixture, the coil 20 replaces the heat generated by the mixed combustion inside the mixed combustion pipe 18, and the heat is introduced into the interior of the heat exchange ring 16 through the heat circulation pipe 8 and the fan 9. The heat exchange ring 16 preheats the air inside the air intake cylinder 13, and the heat inside the heat exchange ring 16 circulates through the heat circulation pipe 10 to the interior of the coil 20 for reheating. The solenoid valve 17 opens the oxygen inside the oxygen tank 11 to increase oxygen inside the air intake cylinder 13 through the oxygen pipe 12.

[0025] The working principle of the utility model is: first, connect one end of the gas pipe 7 to the gas tank, fill the oxygen into the interior of the oxygen tank 11 for standby, connect one end of the mixed combustion component 6 to the cracking furnace, and then start using it. The air pump 4 runs through the air inlet component 3 to extract external air, the filter 14 and the filter cotton 15 filter the air, and the filtered air is introduced into the interior of the mixed combustion pipe 18 through the outlet pipe 5. The gas is introduced into the interior of the mixed combustion pipe 18 through the gas pipe 7 and the gas output ring 22. The motor 24 runs to drive the stirring blade 23 to rotate, and the gas The gas exported by the output ring 22 is mixed with air, and the igniter 21 is operated to ignite the air and gas mixture. The coil 20 replaces the heat generated by the mixed combustion inside the mixed combustion tube 18, and the heat is introduced into the interior of the heat exchange ring 16 through the heat circulation tube 8 and the fan 9. The air inside the air intake cylinder 13 is preheated by the heat exchange ring 16. The heat inside the heat exchange ring 16 circulates to the interior of the coil 20 through the heat circulation tube 10 for reheating. The solenoid valve 17 opens the oxygen inside the oxygen tank 11 and increases the oxygen inside the air intake cylinder 13 through the oxygen tube 12.

[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new type of fully premixed burner for cracking furnace, characterized in that: The invention comprises a carrier (1), an air intake pipe (2), an air intake component (3), an air pump (4), an air outlet pipe (5) and a mixed combustion component (6), wherein the air intake pipe (2) is located at the rear end of the carrier (1), the air intake component (3) is located at the upper end of the air intake pipe (2), the air pump (4) is located at the lower end of the air intake pipe (2), the air outlet pipe (5) is located at the front end of the carrier (1), and the mixed combustion component (6) is located at the upper end of the air outlet pipe (5); A gas pipe (7) is provided on the lower side of the mixed combustion component (6), a heat circulation pipe (8) is provided at one end of the mixed combustion component (6), a fan (9) is installed at one end of the heat circulation pipe (8), a heat circulation outlet pipe (10) is provided at one end of the mixed combustion component (6) adjacent to the heat circulation pipe (8), an oxygen tank (11) is installed at one end of the upper side of the support frame (1), and an oxygen pipe (12) is provided on the upper side of the oxygen tank (11).

2. A novel full premixed burner for cracking furnace according to claim 1, characterized in that: The air intake component (3) includes an air intake cylinder (13), a filter screen (14) is provided on the upper side of the air intake cylinder (13), a filter cotton (15) is provided at the upper end position of the interior of the air intake cylinder (13), a heat exchange ring (16) is installed at the lower end position of the interior of the air intake cylinder (13), a solenoid valve (17) is installed at one end of the oxygen tube (12) near the air intake cylinder (13), the mixed combustion component (6) includes a mixed combustion tube (18), a cover (19) is provided at one end position of the outer side of the mixed combustion tube (18), a coil (20) is provided on the inner side of the cover (19), an igniter (21) is installed at the inner side of the mixed combustion tube (18) near the cover (19), a gas output ring (22) is installed inside the mixed combustion tube (18), a stirring blade (23) is provided on the inner side of the gas output ring (22), and a motor (24) is installed at the position corresponding to the stirring blade (23) on one side of the support frame (1).

3. A novel full premixed burner for cracking furnace according to claim 1, characterized in that: The output end of the air intake component (3) is connected to the input end of the air intake pipe (2), the output end of the air intake pipe (2) is connected to the input end of the air pump (4), the output end of the air pump (4) is connected to the input end of the air outlet pipe (5), and the output end of the air outlet pipe (5) is connected to the input end of the mixed combustion component (6).

4. A novel full premixed burner for cracking furnace according to claim 1, characterized in that: The output end of the oxygen tank (11) is connected to the input end of the oxygen tube (12), and the output end of the oxygen tube (12) is connected to the input end of the air intake component (3).

5. A novel full premixed burner for cracking furnace according to claim 2, characterized in that: The output end of the oxygen tube (12) is connected to the upper end of the air inlet cylinder (13) through the electromagnetic valve (17), the output end of the gas tube (7) is connected to the input end of the gas output ring (22), the output end of the gas output ring (22) is connected to the inside of the mixed combustion tube (18), and the stirring blade (23) is rotated at the inner side of the gas output ring (22) by the motor (24).

6. A novel full premixed burner for cracking furnace according to claim 2, characterized in that: The output end of the coil (20) is connected to the input end of the heat circulation pipe (8), the output end of the heat circulation pipe (8) is connected to the input end of the heat exchange ring (16) through the fan (9), the output end of the heat exchange ring (16) is connected to the input end of the heat circulation pipe (10), and the output end of the heat circulation pipe (10) is connected to the input end of the coil (20).

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