A burner and a direct-fired kiln furnace system including the burner

Abstract

The burner belongs to the technical field of furnace equipment, and particularly relates to a burner. The present invention provides a burner with good use effect. The burner of the present invention includes a housing 5, an air intake adjustment port 4 is provided on the housing 5, a sleeve 11 and a conductive column are arranged inside the housing 5, a gas pressurizing mixer 10 is arranged inside the sleeve 11, the inlet of the gas pressurizing mixer 10 is connected to an intake pipe 7, and the outlet of the gas pressurizing mixer 10 is connected to a gas mixing device 9; the inner end of the conductive column is placed inside the sleeve 11, and the outer end of the conductive column is placed outside the housing 5; an ignition head 2 is arranged at the inner end of the conductive column, and an igniter power supply interface 1 is arranged at the outer end of the conductive column.

Description

Technical Field

[0001] The present invention belongs to the technical field of kiln equipment, and particularly relates to a burner and a direct-fired kiln furnace system including the burner. Background Art

[0002] As is well known, the environmental pollution that threatens the survival of humanity is mainly caused by carbon dioxide, sulfur dioxide, hydrocarbons, nitrogen oxides, etc., which pose a great threat to people's physical and mental health. According to domestic and foreign statistical data, more than 75% of the environmental pollution in urban areas comes from the incomplete combustion of fossil and biofuels. The generation of environmental pollution depends on the nature of the fuel used. At present, most fuels are solid fossil fuels, biofuels, and liquid gasoline and diesel. The formal scientific names of their main components are carbon monoxide, carbon dioxide, alkanes with C5 - C12, and alkanes with C15 - C18 respectively. When they burn, they are not sufficiently stable, complete, and thorough, and the content of carbon monoxide, carbon dioxide, sulfur dioxide, hydrocarbons, and nitrogen oxides in the exhaust gas is relatively high, causing serious air pollution. However, it has brought two major hazards that are difficult to solve so far: one is the emission of carbon dioxide and hydrocarbons, and the other is the emission of sulfur dioxide and nitrogen oxides. It has seriously polluted the living environment on which humanity depends.

[0003] In response to the major problems that have attracted worldwide attention, some countries have taken corresponding measures to reduce emissions. However, so far, the fatal problems have not been fundamentally solved.

[0004] Hydrogen is an energy carrier. People can utilize the energy stored in hydrogen on a large scale. As a secondary energy source, hydrogen not only has high energy efficiency but also does not produce waste such as carbon dioxide and sulfur dioxide. It has the characteristics of being clean, efficient, widely sourced, and renewable. Developing hydrogen energy is expected to become an important way to improve energy efficiency, reduce pollution emissions, reduce the consumption of fossil and bioenergy, ensure energy security, improve the ecological environment, and achieve diversified energy development.

[0005] Hydrogen energy is regarded as the ultimate energy source for humanity in today's society and is an extremely superior new energy. The reasons are as follows: Water, as a renewable energy source, is inexhaustible. After hydrogen burns, it generates water and does not affect the original combustion principle environment.

[0006] In summary, a kiln furnace system that uses hydrogen and oxygen as a combustion carrier should be designed, and a burner that matches it should also be designed. Summary of the Invention

[0007] The present invention aims at the above problems and provides a burner with good use effect and a direct-fired kiln furnace system including the burner.

[0008] To achieve the above object, the present invention adopts the following technical solutions. The burner of the present invention includes a housing 5, an air intake adjustment port 4 is provided on the housing 5, a sleeve 11 and a conductive column are provided inside the housing 5, a gas pressurizing mixer 10 is provided inside the sleeve 11, the inlet of the gas pressurizing mixer 10 is connected to an inlet pipe 7, and the outlet of the gas pressurizing mixer 10 is connected to a gas mixing device 9;

[0009] The inner end of the conductive column is placed inside the sleeve 11, and the outer end of the conductive column is placed outside the housing 5;

[0010] An ignition head 2 is provided at the inner end of the conductive column, and an igniter power supply interface 1 is provided at the outer end of the conductive column.

[0011] As another preferred solution, the inlet pipe 7 of the present invention is connected to a fuel inlet pipe 25 and a gas output pipe of a gas buffer part respectively through a tee pipe.

[0012] As another preferred solution, the ignition head 2 of the present invention adopts a tungsten alloy ignition head.

[0013] As another preferred solution, an outer shield 3 is provided at the air inlet end of the burner of the present invention, and a conductive column and an inlet pipe perforation are provided on the outer shield 3.

[0014] As another preferred solution, the gas mixing device 9 of the present invention is arranged at the front end of the gas pressurizing mixer 10 and is connected to a fixing plate 8, the fixing plate 8 is arranged at the front end of the sleeve 11, and an inlet pipe and a conductive column perforation are provided on the fixing plate 8.

[0015] As another preferred solution, a mesh plate 12 is provided at the rear end of the sleeve 11 of the present invention.

[0016] As another preferred solution, the mesh holes of the mesh plate 12 of the present invention are rectangular holes.

[0017] As another preferred solution, a plurality of through holes are arranged on the sleeve 11 of the present invention.

[0018] As another preferred solution, a fixing flange 6 is provided on the outer wall of the housing 5 of the present invention.

[0019] As another preferred solution, the flame end of the burner of the present invention is placed inside a heat absorption chamber.

[0020] As another preferred solution, the gas buffer part of the present invention adopts a gas buffer tank.

[0021] As another preferred solution, the gas buffer tanks of the gas buffer part of the present invention are two in series.

[0022] As another preferred solution, a plurality of horizontal metal mesh plates are arranged in the gas buffer tank of the present invention from top to bottom, and the inlet and outlet of the gas buffer tank are arranged on both sides of the upper end of the gas buffer tank.

[0023] As another preferred solution, the gas booster mixer 10 of the present invention adopts a spiral pipe structure from front to back.

[0024] Secondly, the gas mixer 9 of the present invention includes a hollow cavity, the hollow cavity is communicated with the outlet of the gas booster mixer 10, and a burner port is arranged at the rear end of the hollow cavity.

[0025] In addition, there are a plurality of the burner ports of the present invention, which are evenly distributed in the circumferential direction.

[0026] Advantages of the present invention.

[0027] The fan blows air in through the air intake adjustment port 4 to adjust the air volume. The intake pipe 7 is connected to the gas output port of the gas buffer part for inputting hydrogen-oxygen gas. After the gas is mixed, the combustion value of hydrogen can be reduced to achieve combustion balance and adjustability. One igniter power supply interface 1 is connected to the positive electrode, and the other igniter power supply interface 1 is connected to the negative electrode, and electricity is transmitted to the two tungsten alloy igniter heads 2 through the conductive column for ignition. The sleeve 11 plays a role in storing heat. Description of the drawings

[0028] The present invention will be further described below in conjunction with the drawings and specific embodiments. The protection scope of the present invention is not limited only to the description of the following content.

[0029] Figure 1 It is a schematic diagram of the internal structure of the burner of the present invention.

[0030] Figure 2 It is an external view of the burner of the present invention.

[0031] Figure 3 It is an exploded view of the burner of the present invention.

[0032] Figure 4 It is a schematic diagram of the structure of the direct-fired kiln furnace system of the present invention.

[0033] Figure 5 It is a schematic diagram of the primary electrical circuit of the present invention.

[0034] Figure 6 It is a schematic diagram of the secondary wiring part circuit of the present invention.

[0035] Figure 7 It is a schematic diagram of the secondary wiring part circuit of the water pump of the present invention.

[0036] Figure 8 、 9 、10 is a schematic diagram of the PLC wiring part circuit of the present invention.

[0037] Figure 11 This is the terminal wiring diagram of the present invention.

[0038] Figure 12 This is the wiring diagram of the aviation plug (for transmitting pressure, water level, and temperature information) of the present invention. Detailed implementation manners

[0039] As shown in the figure, the burner of the present invention can be applied to a direct-fired kiln furnace system. The direct-fired kiln furnace system includes a hydrogen-oxygen gas generation part, a gas buffer part, and a combustion part. The gas output port of the gas generation part is connected to the gas input port of the gas buffer part, and the gas output port of the gas buffer part is connected to the gas input port of the combustion part.

[0040] The direct-fired kiln furnace system of the present invention supplies hydrogen-oxygen gas to the combustion part through the hydrogen-oxygen gas generation part and the gas buffer part. Hydrogen catalytic cracking combustion is assisted by oxygen, which increases the energy utilization rate, improves the combustion efficiency, and reduces harmful gas emissions. At the same time, the raw material resources are rich. Hydrogen can be produced from water, and water is the most abundant resource on the earth.

[0041] The gas generation part includes a water and gas storage tank, an aqueous hydrogen-oxygen gas separator, and a gas buffer tank. The outlet of the gas buffer tank is connected to the gas input port of the gas buffer part;

[0042] A circulating cooling water inlet is provided at the upper end of the water and gas storage tank. A circulating cooling water outlet is provided at the lower end of the aqueous hydrogen-oxygen gas separator 16. The circulating cooling water outlet is connected to the inlet of the cooling circulation pump. The outlet of the cooling circulation pump 19 is connected to the inlet of the cooler. The outlet of the cooler 13 is connected to the circulating cooling water inlet. The cooling water inlet of the cooler is connected to the cooling water supply pipe D; The water inlet of the water and gas storage tank is connected to the water supply pipe A.

[0043] The gas generation part can adopt the equipment with the patent number ZL200810229903.1 and the name of "Water-based Hydrogen and Oxygen Source Integrated Extraction and Multi-purpose Machine Device". There is only one difference between the equipment of the gas generation part in this application and the equipment with the patent number ZL200810229903.1 and the name of "Water-based Hydrogen and Oxygen Source Integrated Extraction and Multi-purpose Machine Device", that is, the cooling method of the equipment in the gas generation part of this application adopts water cooling, while the cooling method of this patent adopts air cooling. Therefore, only a slight improvement is needed on the equipment of this patent to obtain the equipment of the gas generation part of this application. The improvement method is as follows: An additional circulating cooling water inlet 15 is provided at the upper end of the water storage and gas storage tank, and an additional circulating cooling water outlet 20 is provided at the lower end of the water-based hydrogen and oxygen gas separator (i.e., the water-based hydrogen and oxygen gas separation tank in the above patent). The circulating cooling water outlet is connected to the inlet of the cooling circulation pump, the outlet of the cooling circulation pump is connected to the inlet of the cooler, the outlet of the cooler is connected to the circulating cooling water inlet, and the cooling water inlet of the cooler is connected to the cooling inlet pipe D. The gas buffer tank at the upper end of the water storage and gas storage tank of the present invention is equivalent to the gas distribution tank in the above patent and is used to mix hydrogen and oxygen gases together.

[0044] When the equipment and ambient temperature are higher than the set value, start the cooling circulation pump for circulating cooling.

[0045] A cooling fan is provided above the water-based hydrogen and oxygen gas separator. When the temperature of the water-based hydrogen and oxygen gas separator is too high, start the cooling fan.

[0046] An exhaust solenoid valve is provided on the gas buffer tank 14 at the upper end of the water storage and gas storage tank (the operation of the exhaust solenoid valve is controlled by QF4), and a pressure sensor is provided inside the gas buffer tank. When the pressure in the gas buffer tank is too high, control the exhaust solenoid valve to open.

[0047] The combustion part adopts a burner 21.

[0048] The burner includes a housing 5. An air intake adjustment port 4 is provided on the housing 5 (the fan blows air inward through the intake adjustment port 4 to adjust the air volume. External threads can be provided on the outer wall of the intake adjustment port 4). A sleeve 11 and a conductive column 22 are provided inside the housing 5 (a ceramic housing can be adopted on the outside of the conductive column, and a conductor is provided inside). A gas pressurization mixer 10 is provided inside the sleeve 11. The inlet of the gas pressurization mixer 10 is connected to an inlet pipe 7 (the inlet pipe 7 is connected to the gas output port of the gas buffer part and is used to input hydrogen and oxygen gases), and the outlet of the gas pressurization mixer 10 is connected to a gas mixing device 9 (after the gases are mixed, the combustion value of hydrogen can be reduced to achieve combustion balance and adjustability);

[0049] The inner end of the conductive column is placed inside the sleeve 11, and the outer end of the conductive column is placed outside the housing 5;

[0050] The inner end of the conductive column is provided with an ignition head 2, and the outer end of the conductive column is provided with an igniter power supply interface 1. One igniter power supply interface 1 is connected to the positive electrode, and the other igniter power supply interface 1 is connected to the negative electrode. Electricity is transmitted through the conductive column to the two tungsten alloy ignition heads 2 for ignition. The sleeve 11 plays a role in storing heat.

[0051] The intake pipe 7 is connected to the fuel inlet pipe 25 (which can input fuel, methanol or gas) and the gas output pipe of the gas buffer part respectively through a tee pipe.

[0052] The ignition head 2 uses a tungsten alloy ignition head.

[0053] An outer shield 3 is provided at the intake end of the burner (the outer shield 3 can be welded to the housing 5). The outer shield 3 is provided with conductive columns and intake pipe perforations. The conductive columns can be connected to the outer shield 3 through fasteners (nuts).

[0054] The gas mixer 9 is arranged at the front end of the gas booster mixer 10 and is connected to the fixed disk 8. The fixed disk 8 (the fixed disk 8 can be welded to the sleeve 11) is arranged at the front end of the sleeve 11. The fixed disk 8 is provided with an intake pipe and conductive column perforations.

[0055] A mesh plate 12 is provided at the rear end of the sleeve 11 (the mesh plate 12 can be welded to the sleeve 11). By providing the mesh plate 12, a uniform heat radiation effect can be achieved.

[0056] The mesh holes of the mesh plate 12 are rectangular holes.

[0057] A plurality of through holes are arranged on the sleeve 11. The arrangement of the through holes facilitates the timely replenishment of fresh air.

[0058] A fixed flange 6 is provided on the outer wall of the housing 5.

[0059] The flame end of the burner is placed inside the heat absorption chamber (the heat absorption chamber is the inner cavity part of the kiln for firing products).

[0060] The gas buffer part uses a gas buffer tank.

[0061] The gas buffer tanks 17 and 18 of the gas buffer part are in series.

[0062] A plurality of horizontal metal mesh plates are arranged in the gas buffer tank from top to bottom. The inlet and outlet of the gas buffer tank are arranged on both sides of the upper end of the gas buffer tank. The plurality of horizontal metal mesh plates can further reduce the gas output speed.

[0063] The gas buffer tank can also adopt a cavity structure. Gas enters from the gas buffer tank inlet, accumulates in the gas buffer tank, and then is output from the gas buffer tank outlet to ensure the stability of gas output.

[0064] The gas boosting mixer 10 adopts a spiral tube structure from front to back. The flame combustion increases the temperature and pressure, making the combustion more complete and increasing the heat radiation distance.

[0065] The gas mixer 9 includes a hollow cavity, which is communicated with the outlet of the gas boosting mixer 10, and a burner port is arranged at the rear end of the hollow cavity.

[0066] There are multiple burner ports, which are evenly distributed along the circumferential direction.

[0067] The present invention further includes a system control part, which includes an electrical primary part, a secondary wiring part, a secondary wiring part of the water adding pump, and a PLC wiring part. The control signal input ports of the electrical primary part are respectively connected to the control signal output ports of the secondary wiring part and the control signal output port of the secondary wiring part of the water adding pump. The control signal input ports of the secondary wiring part and the control signal input port of the secondary wiring part of the water adding pump are respectively connected to the control signal output ports of the PLC wiring part.

[0068] The electrical primary part includes a phase sequence protector. The three-phase power is respectively connected to the phase sequence protector, one end of switch QF1, one end of switch QF3, one end of switch QF4, and one end of switch QF5 through switch QF1. The other end of switch QF2 is sequentially connected to the motor of the water adding pump through the controlled switch of relay KM1 and thermal relay FR1. The other end of switch QF3 is respectively connected to one end of the controlled switch of relay KM2 and one end of the controlled switch of relay KM3. The other end of the controlled switch of relay KM2 is connected to the motor of the cooling circulation pump through thermal relay FR1. The other end of the controlled switch of relay KM3 is connected to the motor of the cooling fan;

[0069] The other end of switch QF4 is connected to the control signal input port of the drain solenoid valve;

[0070] The other end of switch QF5 is respectively connected to the PLC power supply terminal and the input terminal of the AC / DC converter. The output terminal of the AC / DC converter is connected to 24V+ and 24V-.

[0071] The secondary wiring part includes switch QF1. One end of switch QF1 is connected to the three-phase power, and the other end of switch QF1 is connected to one end of switch QF3. The other end of switch QF3 is respectively connected to one end of the controlled switch of relay KA3, one end of the controlled switch of relay KM3, and one end of the controlled switch of relay KA4. The other end of the controlled switch of relay KA3 is sequentially connected to N through the control terminal of relay KM2 and FR2. The other end of the controlled switch of relay KA4 is connected to N through the control terminal of relay KM3.

[0072] The secondary wiring part of the water adding pump includes a switch QF1. One end of the switch QF1 is connected to three-phase power, and the other end of the switch QF1 is connected to one end of a switch QF2. The other end of the switch QF2 is respectively connected to one end of a controlled switch of a relay KM1, a fixed end of a single-pole double-throw switch SA1, and one end of a controlled switch of the relay KM1. The other end of the controlled switch of the relay KM1 is connected to the motor of the water adding pump (there are two water adding pumps in the circuit diagram. One water adding pump is connected to the water injection port of the ZL200810229903.1 device and is used for supplying water to the water storage and gas storage tank. The other water adding pump is connected to the cooling water inlet pipe D and is used for supplying water to the cooler).

[0073] The first moving end of the single-pole double-throw switch SA1 is respectively connected to one end of a switch SB1, one end of a controlled switch of the relay KM1, and one end of the control end of the relay KM1 through a controlled switch of a relay KA2. The other end of the switch SB1 is respectively connected to one end of a switch SBS1 and the other end of a controlled switch of the relay KM1. The other end of the switch SBS1 is connected to the second moving end of the single-pole double-throw switch SA1.

[0074] The other end of the control end of the relay KM1 is respectively connected to one end of an indicator light HG and one end of a buzzer FM (for alarming for abnormal temperature, abnormal water level, and abnormal pressure) through a thermal relay FR1. The other end of the indicator light HG is connected to the other end of the controlled switch of the relay KM1. The other end of the buzzer FM is connected to 501 through a controlled switch of a relay KA9.

[0075] The PLC wiring part adopts a CPU-SR30 type PLC. The 1M terminal of the PLC is connected to 24V. The 0.1 - 0.7 and 1.0 terminals of the 1M group of the PLC are respectively connected to the switch SA1, the controlled switch of the relay KM1, the controlled switch of the relay KM3, the controlled switch of the relay KM2, the controlled switch of the relay KA7, the controlled switch of the relay KA8, the thermal relays FR1 and FR2 correspondingly.

[0076] The 0.0 - 0.3 terminals of the 1L group of the PLC are respectively connected to the control ends of the relays KA1 - KA4 correspondingly. The 0.4 - 0.7 terminals of the 2L group of the PLC are respectively connected to the control ends of the relays KA5 - KA8 correspondingly. The 1.0 terminal of the 3L group of the PLC is connected to the control end of the relay KA9.

[0077] The 0 + and 0 - ports of the PLC are connected to a temperature sensor (for detecting the temperature of the circulating cooling water and can be set at the outlet of the circulating cooling water). The 1 + and 1 - ports of the PLC are connected to a pressure sensor (for detecting the hydrogen storage pressure and can be set on the hydrogen storage tank (the hydrogen storage tank of ZL200810229903.1) in the gas production part). The 2 + and 2 - ports of the PLC are connected to a pressure sensor (for detecting the oxygen storage pressure and can be set on the oxygen storage tank (the oxygen storage tank of ZL200810229903.1) in the gas production part).

[0078] The present invention relates to a direct-firing kiln furnace system with self-provided hydrogen-oxygen gas source, which has high energy conversion efficiency, energy conservation, emission reduction, and low operating cost, and is applicable to endothermic, heat exchange, roasting system equipment such as horizontal kilns, vertical kilns, and tunnel kilns.

[0079] In the PLC wiring diagram, "hydrogen water seal liquid supplement" and "oxygen water seal liquid supplement" can be applied to the situations of respectively outputting hydrogen and oxygen. For example, if the "gas distribution tank" of the equipment ZL200810229903.1 is removed, oxygen and hydrogen are directly output from the oxygen output isolation tank and the hydrogen output isolation tank. The output pipe of the oxygen output isolation tank enters the oxygen water seal tank below the liquid level through the upper inlet of the oxygen water seal tank, and the upper outlet of the oxygen water seal tank is connected to the oxygen output pipe; the output pipe of the hydrogen output isolation tank enters the hydrogen water seal tank below the liquid level through the upper inlet of the hydrogen water seal tank, and the upper outlet of the hydrogen water seal tank is connected to the hydrogen output pipe. When the liquid in the water seal tank is insufficient, "hydrogen water seal liquid supplement" and "oxygen water seal liquid supplement" are carried out.

[0080] The "generator" in the PLC wiring diagram refers to the "aqueous hydrogen-oxygen gas separator" in the structure diagram.

[0081] The "hydrogen solenoid valve exhaust" and "oxygen solenoid valve exhaust" in the PLC wiring diagram refer to the solenoid valves on the hydrogen storage tank and the oxygen storage tank of ZL200810229903.1.

[0082] It can be understood that the above specific description of the present invention is only for explaining the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirements are met, they are all within the protection scope of the present invention.

Claims

1. A direct-fired furnace system, comprising a hydrogen-oxygen gas generation part, a gas buffer part and a combustion part, characterized in that the gas output port of the gas generation part is connected to the gas input port of the gas buffer part, and the gas output port of the gas buffer part is connected to the gas input port of the combustion part; the combustion part includes a burner, the burner includes a housing (5), an air intake adjustment port (4) is provided on the housing (5), a sleeve (11) and a conductive column are arranged inside the housing (5), a gas booster mixer (10) is arranged inside the sleeve (11), the inlet of the gas booster mixer (10) is connected to an inlet pipe (7), and the outlet of the gas booster mixer (10) is connected to a gas mixing device (9); the inner end of the conductive column is placed inside the sleeve (11), and the outer end of the conductive column is placed outside the housing (5); an ignition head (2) is arranged at the inner end of the conductive column, and an ignition power supply interface (1) is arranged at the outer end of the conductive column; a mesh plate (12) is arranged at the rear end of the sleeve (11); the gas booster mixer (10) adopts a spiral pipe structure from front to back; the gas mixing device (9) includes a hollow cavity, the hollow cavity is communicated with the outlet of the gas booster mixer (10), and a spray combustion port is arranged at the rear end of the hollow cavity; the gas mixing device (9) is arranged at the front end of the gas booster mixer (10) and is connected to a fixed disk (8), the fixed disk (8) is arranged at the front end of the sleeve (11), and an inlet pipe and a conductive column through hole are arranged on the fixed disk (8); the gas buffer part adopts a gas buffer tank; a plurality of horizontal metal mesh plates are arranged in the gas buffer tank from top to bottom, and the inlet and outlet of the gas buffer tank are arranged on both sides of the upper end of the gas buffer tank; the inlet pipe (7) is respectively connected to a fuel inlet pipe (25) and the gas output pipe of the gas buffer part through a three-way pipe, and the fuel inlet pipe (25) inputs fuel oil, methanol or gas; the gas generation part includes a water and gas storage tank and a gas buffer tank (14), an exhaust solenoid valve is arranged on the gas buffer tank (14) at the upper end of the water and gas storage tank, a pressure sensor is arranged inside the gas buffer tank (14), and when the pressure inside the gas buffer tank (14) is too high, the exhaust solenoid valve is controlled to open; the gas buffer tanks of the gas buffer part are two in series.

2. The direct-fired furnace system according to claim 1, characterized in that the ignition head (2) adopts a tungsten alloy ignition head.

3. The direct-fired furnace system according to claim 1, characterized in that an outer protective cover (3) is arranged at the air inlet end of the burner, and a conductive column and an inlet pipe through hole are arranged on the outer protective cover (3).

4. The direct-fired furnace system according to claim 1, characterized in that a plurality of through holes are arranged on the sleeve (11).

5. The direct-fired furnace system according to claim 1, characterized in that the spray combustion ports are multiple and are evenly distributed in the circumferential direction.

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