CN116060574B - Chamber type natural gas energy-saving emission-reducing forging heating furnace - Google Patents
Chamber type natural gas energy-saving emission-reducing forging heating furnace Download PDFInfo
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- CN116060574B CN116060574B CN202310362689.1A CN202310362689A CN116060574B CN 116060574 B CN116060574 B CN 116060574B CN 202310362689 A CN202310362689 A CN 202310362689A CN 116060574 B CN116060574 B CN 116060574B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J17/00—Forge furnaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Abstract
The application relates to a chamber type natural gas energy-saving and emission-reduction forging heating furnace, and relates to the field of natural gas casting heating furnaces, comprising a forging furnace component, a natural gas pipeline component and an air supply and exhaust component which are communicated with the forging furnace component, a flue gas air mixing loop component which is communicated with the air supply and exhaust component, a flue gas oxygen mixing loop component which is communicated with the flue gas air mixing loop component, and a controller which is respectively and electrically connected with the flue gas air mixing loop component, the flue gas oxygen mixing loop component, the forging furnace component, the air supply and exhaust component and the natural gas pipeline component; the blower is communicated with the chimney. The natural gas energy waste reducing device has the effects of reducing natural gas consumption of the chamber type natural gas forging heating furnace, improving the natural gas utilization rate and reducing natural gas energy waste used by the chamber type natural gas forging heating furnace.
Description
Technical Field
The application relates to the field of natural gas casting heating furnaces, in particular to a chamber type natural gas energy-saving and emission-reduction forging heating furnace.
Background
The industrial furnace in China is a household with large energy consumption, which is about 25% of the total national energy consumption, and is inferior to the energy consumption of thermal power generation and boilers. The energy consumption of the heating furnace accounts for more than 90% of the total energy consumption of the industrial furnace, and the heating furnace is found to occupy a significant position in the manufacturing field of China.
When the indoor natural gas forging heating furnace used at home at present is used, the heating furnace only pre-stores heat for combustion air, natural gas is not pre-stored, and sensible heat of high-temperature flue gas accounting for a large proportion cannot be recycled; in the aspect of the automatic control technology of thermal engineering, the thermal power is commonly single to adjust, and the temperature adjustment in the heat preservation stage can be realized only by the on-off of natural gas, and the thermal power is relatively large and cannot be adjusted to be smaller, so that the natural gas is relatively wasted. The frequency of alternate combustion is high in the heating stage of the heating furnace, and part of natural gas is discharged in a high-temperature smoke mode directly after the alternate combustion caused by reversing, so that the proportion of incomplete combustion of the natural gas is increased, and the chemical heat loss of the natural gas is increased.
In view of the above-mentioned related art, the inventors consider that the chamber type natural gas forging furnace in the present stage has large natural gas consumption and low utilization rate, and a great amount of incompletely burned natural gas is in the discharged flue gas, resulting in natural gas energy waste.
Disclosure of Invention
In order to reduce the natural gas consumption of the chamber type natural gas forging heating furnace, improve the natural gas utilization rate and reduce the natural gas energy waste used by the chamber type natural gas forging heating furnace, the application provides a chamber type natural gas energy-saving and emission-reducing forging heating furnace.
The application provides a room formula natural gas energy saving and emission reduction forges heating furnace adopts following technical scheme:
the chamber type natural gas energy-saving and emission-reducing forging heating furnace comprises a forging furnace assembly, a natural gas pipeline assembly, an air supply and exhaust assembly, a flue gas-air mixing loop assembly, a flue gas-oxygen mixing loop assembly, and a controller, wherein the natural gas pipeline assembly and the air supply and exhaust assembly are communicated with the forging furnace assembly;
the flue gas-air mixing loop component comprises a mixing air pipeline, a blower, an air flue gas mixing preheater, a flue gas ceramic filter, an air regulator, a blower, a smoke exhaust pipeline and a smoke pipe;
the air conditioner comprises an air mixing pipeline, an air blower, a smoke mixing preheater, a smoke gas ceramic filter, a blower, a smoke exhaust draught fan and a smoke exhaust pipeline, wherein one end of the air mixing pipeline is communicated with the air blowing and exhausting assembly, the other end of the air mixing pipeline is communicated with one end of the air blower, the other end of the air blower is communicated with one end of the air mixing preheater, the other end of the smoke mixing preheater is communicated with one end of the air conditioner, the other end of the air conditioner is communicated with one end of the smoke gas ceramic filter, the other end of the smoke gas ceramic filter is communicated with the blower, one end of the blower is communicated with the smoke exhaust draught fan, the other end of the smoke exhaust draught fan is respectively communicated with one ends of the smoke pipe and the smoke exhaust pipeline, and the other end of the smoke exhaust pipeline is communicated with the air blowing and exhausting assembly;
the blower is communicated with the chimney.
Through adopting above-mentioned technical scheme, set up the controller, the controller control natural gas pipeline subassembly is opened, natural gas gets into in the natural gas pipeline subassembly through natural gas supply pipeline, natural gas gets into in the forging furnace subassembly through natural gas pipeline subassembly, natural gas burns in the forging furnace subassembly, after the forging furnace subassembly work and produce burnt gas and the complete natural gas of unburned, burnt gas and the complete natural gas of unburned get into exhaust pipe through the air feed manifold simultaneously, under the effect of induced draft fan of discharging fume, a portion of burnt gas and the complete natural gas of unburned are discharged through the chimney, another portion of burnt gas and the complete natural gas of unburned get into in the flue gas ceramic filter through flue gas electric control valve under the effect of forced draught fan, the gas that gets into flue gas ceramic filter gets into after filtering in the air conditioner and mix with the air, mixed gas gets into in the air flue gas mix preheater mix evenly and preheat, after preheating, get into the air feed subassembly through mixed air pipeline and finally get into in the forging furnace subassembly under the effect of air-out, the forging furnace temperature is promoted, reduce waste gas emission, reduce the natural gas of room formula natural gas forging furnace, improve the effect, the natural gas utilization ratio of the energy waste of room formula natural gas forging furnace, and natural gas utilization ratio.
Optionally, a flue gas electric regulating valve is installed at the communication part of the blower and the flue gas ceramic filter, and the flue gas electric regulating valve is used for controlling the volume of flue gas entering the flue gas ceramic filter;
and the flue gas electric regulating valve is electrically connected with the controller.
Through adopting above-mentioned technical scheme, the controller controls the flue gas electric control valve, controls the flue gas volume that gets into in the flue gas ceramic filter through the flue gas electric control valve, avoids getting into the recovery gas in the flue gas ceramic filter too much, influences follow-up burning recovery.
Optionally, the forging furnace component comprises a hearth and a plurality of honeycomb regenerative chambers arranged in the hearth;
each honeycomb regenerator is communicated with the air feeding and exhausting assembly, each honeycomb regenerator is provided with a burner, each burner is communicated with the natural gas pipeline assembly, and each burner is electrically connected with the controller;
and a furnace pressure detector is arranged in the hearth and is electrically connected with the controller.
Through adopting above-mentioned technical scheme, natural gas pipeline subassembly lets in forging furnace subassembly with natural gas to through the burning nozzle burning natural gas, improve furnace temperature, waste gas and the complete natural gas of unburned that produces after the burning get into send exhaust subassembly, retrieve to honeycomb regenerator after flue gas air mixing loop subassembly is handled, and burn the complete natural gas of unburned through the nozzle again, after furnace temperature reaches the settlement temperature, the controller control send exhaust subassembly and natural gas pipeline subassembly to close, stop to carrying natural gas in the furnace, the waste gas that produces after the burning and the complete natural gas of unburned. When the temperature of the hearth is lower than the set temperature, the controller controls the gas feeding and exhausting assembly and the natural gas pipeline assembly to be opened again, natural gas is conveyed in the hearth, waste gas generated after combustion and unburnt natural gas are combusted again, the temperature of the hearth is heated, exhaust emission is reduced, meanwhile, the natural gas consumption of the chamber type natural gas forging heating furnace is reduced, the natural gas utilization rate is improved, and the natural gas energy waste used by the chamber type natural gas forging heating furnace is reduced.
Optionally, the air supply and exhaust assembly comprises an air supply header pipe, an air exhaust header pipe, an air supply branch pipe and an air exhaust branch pipe;
the air supply manifold is communicated with one end of the mixed air pipeline, which is far away from the blower, the air supply manifold is communicated with a plurality of air supply branch pipes, and one end of the air supply branch pipes, which is far away from the air supply manifold, is respectively communicated with a plurality of honeycomb heat storage chambers in a one-to-one correspondence manner;
the exhaust manifold is communicated with one end, far away from the blower, of the smoke exhaust pipeline, the exhaust manifold is communicated with a plurality of exhaust branch pipes, and one end, far away from the exhaust manifold, of each exhaust branch pipe is respectively communicated with a plurality of honeycomb heat storage chambers in a one-to-one correspondence manner.
Through adopting above-mentioned technical scheme, the automatic control pneumatic butterfly valve of controller control installation on each exhaust branch pipe opens and closes, makes things convenient for in the furnace through waste gas and the complete natural gas of unburned that burns to pass through each exhaust branch pipe and pass into exhaust manifold in, realizes the discharge to waste gas and the complete natural gas of unburned that burns. Meanwhile, the controller controls the opening of an automatic control pneumatic butterfly valve arranged on each air supply branch pipe, waste gas generated by combustion and unburnt natural gas enter the air supply header pipe after being treated by the flue gas-air mixing loop assembly, and the waste gas and unburnt natural gas are sent into the forging furnace assembly through each air supply branch pipe, so that the forging furnace assembly carries out secondary combustion on the unburnt natural gas, the utilization rate of the natural gas is improved, the natural gas consumption of the chamber type natural gas forging heating furnace is reduced, and the natural gas energy waste used by the chamber type natural gas forging heating furnace is reduced.
Optionally, each exhaust branch pipe and each air supply branch pipe are provided with a manual control regulating valve and an automatic control pneumatic butterfly valve;
and each automatic control pneumatic butterfly valve is electrically connected with the controller.
Through adopting above-mentioned technical scheme, each automatic control pneumatic butterfly valve of controller control realizes the control to sending exhaust subassembly fast, all installs manual control governing valve simultaneously on each exhaust branch pipe and each branch pipe that send, can close manual control governing valve fast in urgent moment, realizes sending the urgent shutoff of exhaust subassembly, improves the safety in utilization of a room formula natural gas energy saving and emission reduction forging heating furnace.
Optionally, the natural gas pipeline assembly includes natural gas trunk line and several with natural gas branch pipeline of natural gas trunk line intercommunication, each the one end that natural gas branch pipeline kept away from the natural gas trunk line respectively with several the nozzle one-to-one intercommunication.
Through adopting above-mentioned technical scheme, natural gas pipeline subassembly lets in forging furnace subassembly with natural gas to burn natural gas through the nozzle, realize the effect to furnace temperature promotion.
Optionally, a natural gas quick cut-off valve, a natural gas flowmeter, a natural gas flow automatic regulating valve and a natural gas pressure gauge are respectively installed on the natural gas main pipeline, and the natural gas quick cut-off valve, the natural gas flowmeter, the natural gas flow automatic regulating valve and the natural gas pressure gauge are all electrically connected with the controller;
and each natural gas branch pipeline is provided with a natural gas branch regulating valve and a natural gas branch electromagnetic valve, and the natural gas branch regulating valves and the natural gas branch electromagnetic valves are electrically connected with the controller.
Through adopting above-mentioned technical scheme, the controller is connected with natural gas quick trip valve, natural gas flowmeter, natural gas flow automatic regulating valve and natural gas pressure gauge electricity, realizes the quick control to the natural gas pipeline subassembly.
Optionally, the flue gas and oxygen mixing loop component comprises a flue gas and oxygen mixing tube, a flue gas loop tube, a flue gas circulation tube and an oxygenerator;
one end of the flue gas circulation pipe is communicated with the air feeder, the other end of the flue gas circulation pipe is communicated with one end of the flue gas oxygen mixing pipe, and the other end of the flue gas oxygen mixing pipe is communicated with the air flue gas mixing preheater;
the flue gas circulation pipe is also communicated with one end of the flue gas loop pipe, and the other end of the flue gas loop pipe is communicated with the chimney;
the flue gas oxygen mixing pipe is communicated with the oxygenerator.
Through adopting above-mentioned technical scheme, after forging furnace subassembly work and produce combustion waste gas and unburned complete natural gas, combustion waste gas and unburned complete natural gas get into the exhaust gas pipeline through the air feed header pipe, under the effect of induced draft fan, a portion of combustion waste gas and unburned complete natural gas get into in the flue gas circulation pipe, combustion waste gas and unburned complete natural gas in the flue gas circulation pipe get into in the flue gas oxygen mixing tube, oxygenerator lets oxygen in the flue gas oxygen mixing tube, make combustion waste gas and unburned complete natural gas and oxygen in the flue gas circulation pipe mix, and through the effect of air flue gas mixing preheater and air-blower, finally get into forging furnace subassembly, avoid combustion waste gas and unburned complete natural gas oxygen content in the flue gas circulation pipe lower, lead to its unable normal combustion, and accomplish the recycle to the natural gas of the incomplete complete natural gas of part, reduce the natural gas consumption of room formula natural gas forging heating furnace, improve the natural gas utilization ratio, reduce the natural gas energy waste that room formula gas forging heating furnace used.
Optionally, a first unidirectional electric control regulating valve is arranged at the communication part of the smoke discharging induced draft fan and the smoke tube;
a second unidirectional electric control regulating valve is arranged at the communication part of the flue gas circulation pipe and the air blower;
a third unidirectional electric control regulating valve is arranged at the communication part of the flue gas circulation pipe and the flue gas oxygen mixing pipe;
a fourth unidirectional electric control regulating valve is arranged at the communication part of the flue gas circulation pipe and the flue gas return pipe;
a pipeline pressure gauge is arranged in the flue gas circulation pipe;
the first unidirectional electric control regulating valve, the second unidirectional electric control regulating valve, the third unidirectional electric control regulating valve, the fourth unidirectional electric control regulating valve and the pipeline pressure gauge are all electrically connected with the controller.
Through adopting above-mentioned technical scheme, set up first one-way automatically controlled governing valve, the automatically controlled governing valve of second one-way automatically controlled governing valve, third one-way automatically controlled governing valve and the automatically controlled governing valve of fourth, guarantee the gaseous single direction circulation of flue gas oxygen hybrid circuit subassembly, simultaneously the controller is connected first one-way automatically controlled governing valve, the automatically controlled governing valve of second one-way, the automatically controlled governing valve of third one-way and the automatically controlled governing valve electricity of fourth, realize quick control, when the pressure value that the pipeline manometer detected surpasses the default, the automatically controlled governing valve of fourth one-way and the automatically controlled governing valve of first one-way are opened, carry out quick emission to the burning waste gas in the flue gas oxygen hybrid circuit subassembly and the natural gas that does not burn completely, avoid the pressure in the flue gas oxygen hybrid circuit subassembly too big, and then cause equipment damage, improve the safety in utilization of a room formula natural gas energy-conserving emission reduction forge heating furnace.
Optionally, the mixed air pipeline is arranged in the smoke exhaust pipeline in a penetrating way;
the pipeline for communicating the oxygenerator and the flue gas oxygen mixing pipe is arranged in the flue gas loop pipe in a penetrating way;
and a pipeline for communicating the flue gas ceramic filter, the air conditioner and the air-flue gas mixing preheater is arranged in the flue gas circulation pipe in a penetrating way.
Through adopting above-mentioned technical scheme, the gas in the exhaust gas pipeline heats the heat preservation to the gas in the mixed air pipeline, and the gas in the flue gas return circuit pipe heats the heat preservation to the gas in the pipeline of intercommunication oxygenerator and flue gas oxygen hybrid tube, and the gas in the flue gas runner pipe heats the heat preservation to wearing to establish the gas in the pipeline of communicating in the flue gas runner pipe, avoids gas to cause heat loss in transportation.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the controller is arranged, the natural gas pipeline assembly is controlled to be opened, natural gas enters the natural gas pipeline assembly through the natural gas supply pipeline, the natural gas enters the forging furnace assembly through the natural gas pipeline assembly, the natural gas is combusted in the forging furnace assembly, after the forging furnace assembly works and generates combustion waste gas and unburnt complete natural gas, the combustion waste gas and the unburnt complete natural gas enter the smoke exhaust pipeline through the exhaust manifold, a part of the combustion waste gas and the unburnt complete natural gas are discharged through the chimney under the action of the smoke exhaust induced draft fan, the other part of combustion waste gas and unburnt natural gas enter the flue gas ceramic filter through the flue gas electric regulating valve under the action of the blower, the gas entering the flue gas ceramic filter enters the air conditioner after being filtered and is mixed with air, the mixed gas enters the air flue gas mixing preheater to be uniformly mixed and preheated, and enters the air feeding and discharging assembly through the mixed air pipeline and finally enters the forging furnace assembly to be burnt under the action of the blower after being preheated, so that the temperature of the forging furnace is increased, the exhaust emission is reduced, the natural gas consumption of the chamber type natural gas forging heating furnace is reduced, the natural gas utilization rate is improved, and the natural gas energy waste used by the chamber type natural gas forging heating furnace is reduced;
2. after the forging furnace component works and generates combustion waste gas and unburned natural gas, the combustion waste gas and the unburned natural gas enter a smoke exhaust pipeline through an exhaust manifold, a part of the combustion waste gas and the unburned natural gas enter a smoke flow pipe under the action of a smoke exhaust induced draft fan, the combustion waste gas and the unburned natural gas in the smoke flow pipe enter a smoke oxygen mixing pipe, oxygen is introduced into the smoke oxygen mixing pipe by an oxygenerator, so that the combustion waste gas and the unburned natural gas in the smoke flow pipe are mixed with the oxygen, and finally enter the forging furnace component under the action of an air-smoke mixing preheater and a blower, the combustion waste gas and the unburned natural gas in the smoke flow pipe are prevented from being low in oxygen content, so that the combustion waste gas and the unburned natural gas cannot be normally combusted, the recycling of the part of the unburned natural gas is completed, the natural gas consumption of the chamber-type natural gas forging furnace is reduced, the natural gas utilization rate is improved, and the natural gas energy waste used by the chamber-type natural gas forging furnace is reduced;
3. the gas in the smoke exhaust pipeline heats and keeps warm to the gas in the mixed air pipeline, the gas in the smoke loop pipe heats and keeps warm to the gas in the pipeline which is communicated with the oxygenerator and the smoke oxygen mixing pipe, the gas in the smoke flow pipe heats and keeps warm to the gas which is penetrated in the communicating pipeline in the smoke flow pipe, and heat loss of the gas in the conveying process is avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic view of a natural gas pipeline assembly in accordance with an embodiment of the present application;
FIG. 3 is a schematic illustration of an air delivery and exhaust assembly according to an embodiment of the present application;
fig. 4 is a schematic diagram of a flue gas air mixing circuit assembly of an embodiment of the present application.
Reference numerals illustrate: 1. a flue gas air mixing circuit assembly; 101. a blower; 102. a flue gas electric regulating valve; 103. a flue gas ceramic filter; 104. an air conditioner; 105. an air-flue gas mixing preheater; 106. a blower; 107. a chimney; 108. a smoke exhaust induced draft fan; 109. a mixed air line; 110. a smoke exhaust pipeline; 2. a forging furnace assembly; 21. a furnace; 22. honeycomb regenerator; 23. a burner; 24. a furnace pressure detector; 3. an air delivery and exhaust assembly; 31. an air supply branch pipe; 32. an exhaust branch pipe; 33. a gas supply header pipe; 34. an exhaust manifold; 35. manually controlling the regulating valve; 36. automatically controlling a pneumatic butterfly valve; 4. a natural gas pipeline assembly; 41. a main natural gas pipeline; 42. a natural gas branch pipeline; 43. a natural gas flow meter; 44. a natural gas quick cut-off valve; 45. an automatic natural gas flow regulating valve; 46. a natural gas branch regulating valve; 47. a natural gas bypass solenoid valve; 48. a natural gas pressure gauge; 5. a flue gas oxygen mixing circuit assembly; 51. an oxygenerator; 52. the first unidirectional electric control regulating valve; 53. the second unidirectional electric control regulating valve; 54. a pipeline pressure gauge; 55. a flue gas and oxygen mixing tube; 56. a third unidirectional electric control regulating valve; 57. a flue gas loop pipe; 58. a flue gas flow pipe; 59. fourth one-way automatically controlled governing valve.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a chamber type natural gas energy-saving and emission-reduction forging heating furnace.
Embodiment one:
referring to fig. 1, the chamber type natural gas energy-saving and emission-reduction forging heating furnace comprises a forging furnace component 2, wherein an air supply and exhaust component 3 and a natural gas pipeline component 4 are communicated with the forging furnace component 2, a flue gas air mixing loop component 1 is communicated with the air supply and exhaust component 3, the natural gas pipeline component 4 is communicated with a natural gas supply pipeline, and the forging furnace component 2, the air supply and exhaust component 3, the natural gas pipeline component 4 and the flue gas air mixing loop component 1 are all electrically connected with a controller, and the controller adopts a siemens PLC controller.
When the chamber type natural gas energy-saving and emission-reduction forging heating furnace works, the controller controls the natural gas pipeline assembly 4 to be opened, natural gas enters the natural gas pipeline assembly 4 through the natural gas supply pipeline, natural gas enters the forging furnace assembly 2 through the natural gas pipeline assembly 4, natural gas combusts in the forging furnace assembly 2, the temperature of the forging furnace is improved, meanwhile, combusted waste gas and unburnt complete natural gas enter the gas feeding and exhausting assembly 3, combusted waste gas and unburnt complete natural gas enter the flue gas air mixing loop assembly 1 through the gas feeding and exhausting assembly 3, the flue gas air mixing loop assembly 1 recovers part of combusted waste gas and unburnt complete natural gas, the recovered part of recycled waste gas and unburnt complete natural gas enter the forging furnace assembly 2 through the gas feeding and exhausting assembly 3, the temperature of the forging furnace assembly 2 is improved, the exhaust emission of the natural gas is reduced, the natural gas consumption of the chamber type natural gas forging heating furnace is simultaneously reduced, the natural gas utilization rate is improved, and the natural gas energy waste used by the chamber type natural gas forging heating furnace is reduced.
Referring to fig. 1 and 2, the forging furnace assembly 2 includes a furnace chamber 21, a furnace pressure detector 24 is installed in the furnace chamber 21, the furnace pressure detector 24 is electrically connected with a controller, a plurality of honeycomb regenerators 22 are installed in the furnace chamber 21, the number of the honeycomb regenerators 22 is not less than three, each honeycomb regenerator 22 is communicated with the air feeding and exhausting assembly 3, burners 23 are installed on each honeycomb regenerator 22, each burner 23 is communicated with the natural gas pipeline assembly 4, and each burner 23 is electrically connected with the controller.
When the forging furnace assembly 2 works, natural gas is introduced into the forging furnace assembly 2 through the natural gas pipeline assembly 4, the natural gas is combusted through the burner 23, the temperature of the hearth 21 is increased, waste gas generated after combustion and unburnt complete natural gas enter the gas feeding and exhausting assembly 3, the waste gas and the unburnt complete natural gas are recycled to the honeycomb regenerator 22 after being treated through the flue gas-air mixing loop assembly 1, the waste gas generated after combustion and the unburnt complete natural gas are combusted again through the burner 23, and after the temperature of the hearth 21 reaches the set temperature, the controller controls the gas feeding and exhausting assembly 3 and the natural gas pipeline assembly 4 to be closed, and natural gas, waste gas generated after combustion and unburnt complete natural gas are conveyed in the hearth 21 is stopped. When the temperature of the hearth 21 is lower than the set temperature, the controller controls the air feeding and exhausting assembly 3 and the natural gas pipeline assembly 4 to be opened again, natural gas is conveyed in the hearth 21, waste gas generated after combustion and unburnt natural gas are combusted again, the natural gas, the waste gas generated after combustion and the unburnt natural gas are combusted again, the temperature of the hearth 21 is heated, the exhaust emission is reduced, meanwhile, the natural gas consumption of the chamber type natural gas forging heating furnace is reduced, the natural gas utilization rate is improved, and the natural gas energy waste used by the chamber type natural gas forging heating furnace is reduced. Meanwhile, when the hearth 21 is heated again, the controller controls each burner 23 to burn in sequence, the burning interval between the burners 23 is 0.5 seconds, and the controller controls all the burners 23 to open burning in sequence, so that the phenomena of large furnace pressure instant fluctuation, furnace door fire and instant black smoke emission of a chimney are avoided. When the pressure in the hearth 21 is detected to change by the furnace pressure detector 24, the furnace pressure detector 24 transmits signals to the controller, the controller receives the signals and then controls the flue gas-air mixing loop assembly 1, the volumes of waste gas and unburned natural gas generated after combustion entering the hearth 21 are adjusted, the stable air pressure in the hearth 21 is ensured, and the working stability and safety of the chamber type natural gas energy-saving and emission-reducing forging heating furnace are improved.
Referring to fig. 1 and 3, the air feed and exhaust assembly 3 includes a plurality of air feed branch pipes 31, the number of the air feed branch pipes 31 is the same as that of the honeycomb regenerators 22, each air feed branch pipe 31 is communicated with each honeycomb regenerator 22 in a one-to-one correspondence manner, one end of each air feed branch pipe 31 far from the honeycomb regenerators 22 is communicated with an air feed manifold 33, and the air feed manifold 33 is communicated with the flue gas air mixing circuit assembly 1. The air supply and exhaust assembly 3 further comprises a plurality of exhaust branch pipes 32, the number of the exhaust branch pipes 32 is the same as that of the honeycomb regenerators 22, each exhaust branch pipe 32 is communicated with each honeycomb regenerator 22 in a one-to-one correspondence manner, one end, away from the honeycomb regenerators 22, of each exhaust branch pipe 32 is communicated with an exhaust manifold 34, and the exhaust manifold 34 is communicated with the flue gas air mixing loop assembly 1. Each of the air supply branch pipes 31 and each of the air discharge branch pipes 32 are provided with a manual control adjusting valve 35 and an automatic control pneumatic butterfly valve 36, and each of the automatic control pneumatic butterfly valves 36 is electrically connected with the controller.
When the forging furnace assembly 2 works and the temperature in the hearth 21 needs to rise, the controller controls the automatic control pneumatic butterfly valve 36 arranged on each exhaust branch pipe 32 to be opened, the manual control regulating valve 35 arranged on each exhaust branch pipe 32 is in an opened state, waste gas generated by combustion and natural gas which is not combusted completely in the hearth 21 are transmitted into the exhaust manifold 34 through each exhaust branch pipe 32, and the waste gas and the natural gas which is not combusted completely are transmitted into the flue gas-air mixing loop assembly 1 through the exhaust manifold 34, so that the exhaust of the waste gas generated by combustion and the natural gas which is not combusted completely is realized. Meanwhile, the controller controls the opening of the automatic control pneumatic butterfly valve 36 arranged on each air supply branch pipe 31, the manual control regulating valve 35 arranged on each air supply branch pipe 31 is in an opening state, waste gas generated by combustion and unburnt natural gas enter the air supply header pipe 33 after being treated by the flue gas air mixing loop assembly 1, and are transmitted into each air supply branch pipe 31 through the air supply header pipe 33 and then are transmitted into the forging furnace assembly 2 through each air supply branch pipe 31, the forging furnace assembly 2 carries out secondary combustion on the unburnt natural gas, the natural gas utilization rate is improved, the natural gas consumption of the chamber type natural gas forging heating furnace is reduced, and the natural gas energy waste used by the chamber type natural gas forging heating furnace is reduced. On the contrary, when the forging furnace component 2 stops burning, the temperature in the hearth 21 needs to be kept stable or reduced, the controller controls the automatic control pneumatic butterfly valve 36 on each air supply branch pipe 31 to be closed, and the waste gas generated by burning and the unburnt natural gas are stopped to be conveyed to the forging furnace component 2, so that the unburnt natural gas is prevented from continuously burning in the forging furnace component 2.
Referring to fig. 1 and 2, the natural gas pipeline assembly 4 includes a natural gas main pipeline 41, one end of the natural gas main pipeline 41 is communicated with a natural gas supply end, a natural gas flowmeter 43, a natural gas quick cut-off valve 44, a natural gas flow automatic regulating valve 45 and a natural gas pressure gauge 48 are mounted on the natural gas main pipeline 41, the natural gas flowmeter 43, the natural gas quick cut-off valve 44, the natural gas flow automatic regulating valve 45 and the natural gas pressure gauge 48 are all electrically connected with a controller, a plurality of natural gas branch pipelines 42 are communicated on the natural gas main pipeline 41, the number of the natural gas branch pipelines 42 is the same as that of burners 23, one end, far away from the natural gas main pipeline 41, of each natural gas branch pipeline 42 is respectively and correspondingly communicated with each burner 23, a natural gas branch regulating valve 46 and a natural gas branch electromagnetic valve 47 are mounted on each natural gas branch pipeline 42, and each natural gas branch electromagnetic valve 46 and each natural gas branch electromagnetic valve 47 are electrically connected with the controller.
When the natural gas pipeline assembly 4 works, the controller controls each natural gas branch electromagnetic valve 47 to be in an open state, and simultaneously, the controller controls the flow quantity of each natural gas branch regulating valve 46, so that the same flow quantity of each natural gas branch regulating valve 46 is ensured, natural gas enters each natural gas branch pipeline 42 through the natural gas main pipeline 41 and enters the forging furnace assembly 2 through each natural gas branch pipeline 42, and is matched with the burner 23 and combusted, so that the heating of the hearth 21 is realized. Simultaneously, the natural gas flowmeter 43 and the natural gas pressure gauge 48 detect the flow and the pressure of the natural gas main pipeline 41 in real time, and when detecting that the flow and the pressure of the natural gas main pipeline 41 exceed preset values, the controller controls the natural gas quick cut-off valve 44 and each natural gas branch electromagnetic valve 47 to be quickly closed, so that the natural gas pipeline assembly 4 is prevented from being dangerous.
Referring to fig. 1 and 4, the flue gas-air mixing circuit assembly 1 includes a flue gas pipe 110, one end of the flue gas pipe 110 is communicated with the exhaust manifold 34, the other end of the flue gas pipe 110 is communicated with one end of a flue gas induced draft fan 108, the other end of the flue gas induced draft fan 108 is respectively communicated with one end of a flue pipe 107 and one end of a blower 101, the other end of the blower 101 is communicated with one end of a flue gas ceramic filter 103, a flue gas electric regulating valve 102 is installed on a pipeline for communicating the blower 101 and the flue gas ceramic filter 103, the flue gas electric regulating valve 102 is electrically connected with a controller, the other end of the flue gas ceramic filter 103 is communicated with one end of an air regulator 104, the other end of the air regulator 104 is communicated with one end of an air-flue gas mixing preheater 105, the other end of the air-flue gas mixing preheater 105 is communicated with one end of a blower 106, the other end of the blower 106 is communicated with one end of a mixed air pipeline 109, the mixed air pipeline 109 is arranged in the flue gas pipe 110 in a penetrating manner, and the other end of the mixed air pipeline 109 is communicated with the air supply manifold 33.
After the forging furnace assembly 2 works and generates combustion exhaust gas and unburned natural gas, the combustion exhaust gas and the unburned natural gas enter a smoke exhaust pipeline 110 through an exhaust manifold 34, under the action of a smoke exhaust induced draft fan 108, a part of the combustion exhaust gas and the unburned natural gas are discharged through a smoke tube 107, the other part of the combustion exhaust gas and the unburned natural gas enter a smoke gas ceramic filter 103 through a smoke electric regulating valve 102 under the action of a blower 101, the ratio of the combustion exhaust gas and the unburned natural gas in the smoke gas ceramic filter 103 to the total combustion exhaust gas and the unburned natural gas is 25% -30%, the combustion exhaust gas and the unburned natural gas in the smoke gas ceramic filter 103 enter an air regulator 104 after being filtered, the combustion exhaust gas and the unburned natural gas are mixed with air in the air regulator 104 and then enter an air-smoke mixed preheater 105 together, the air-smoke mixed preheater 105 uniformly mixes and heats the mixed gas, and then enters a gas supply 33 through a mixed air pipeline 109 under the action of the blower 106, the ratio of the combustion exhaust gas and the unburned natural gas is 25% -30%, the waste of the natural gas in the forging furnace is reduced, the natural gas consumption of the natural gas is reduced, and the natural gas consumption of the forging furnace is increased, and the natural gas consumption is reduced, and the natural gas consumption is recycled. Meanwhile, the mixed air pipeline 109 is arranged in the smoke exhaust pipeline 110 in a penetrating way, so that the mixed gas in the mixed air pipeline 109 is heated and insulated while the smoke exhaust pipeline 110 is used for introducing the smoke exhaust induced draft fan 108, and the mixed gas is prevented from being low in temperature when entering the forging furnace assembly 2 through the air feeding and exhausting assembly 3, so that the temperature in the hearth 21 is reduced, and extra loss is caused to energy.
The implementation principle of the chamber type natural gas energy-saving and emission-reduction forging heating furnace is as follows: when the chamber type natural gas energy-saving and emission-reducing forging heating furnace works, the controller controls the natural gas pipeline assembly 4 to start working, natural gas enters the forging furnace assembly 2 through the natural gas pipeline assembly 4 and is combusted in the forging furnace assembly 2, and the temperature of the forging furnace is increased. The waste gas and the unburnt complete natural gas generated after combustion enter the gas feeding and exhausting assembly 3, and enter the flue gas air mixing loop assembly 1 through the gas feeding and exhausting assembly 3, the flue gas air mixing loop assembly 1 recovers the partially combusted waste gas and the unburnt complete natural gas, the recovered unburnt complete natural gas enters the forging furnace assembly 2 through the gas feeding and exhausting assembly 3, the forging furnace assembly 2 combusts the recovered waste gas and the unburnt complete natural gas, the temperature of the forging furnace assembly 2 is improved, the exhaust emission is reduced, the natural gas consumption of the chamber type natural gas forging heating furnace is reduced, the natural gas utilization rate is improved, and the natural gas energy waste used by the chamber type natural gas forging heating furnace is reduced.
Embodiment two:
referring to fig. 1 and fig. 4, the difference between the embodiment and the first embodiment of the present application is that a chamber type natural gas energy-saving and emission-reduction forging heating furnace further includes a flue gas-oxygen mixing circuit assembly 5, the flue gas-oxygen mixing circuit assembly 5 includes a flue gas flow tube 58, one end of the flue gas flow tube 58 is communicated with a blower 101, a second unidirectional electric control regulating valve 53 is installed at a position where the flue gas flow tube 58 is communicated with the blower 101, and the second unidirectional electric control regulating valve 53 is electrically connected with a controller. The communication pipeline between the blower 101 and the flue gas ceramic filter 103, the communication pipeline between the flue gas ceramic filter 103 and the air regulator 104 and the communication pipeline between the air regulator 104 and the air flue gas mixing preheater 105 are all arranged in the flue gas flow pipe 58 in a penetrating way, the flue gas flow pipe 58 is provided with a pipeline pressure gauge 54, the pipeline pressure gauge 54 is electrically connected with a controller, the other end of the flue gas flow pipe 58 is communicated with one end of a flue gas oxygen mixing pipe 55, a communication pipeline between the flue gas flow pipe 58 and the flue gas oxygen mixing pipe 55 is provided with a third unidirectional electric control regulating valve 56, the third unidirectional electric control regulating valve 56 is electrically connected with the controller, the other end of the flue gas oxygen mixing pipe 55 is communicated with the air flue gas mixing preheater 105, and the flue gas oxygen mixing pipe 55 is also communicated with an oxygenerator 51. The flue gas circulation pipe 58 is also communicated with a flue gas loop pipe 57, a pipeline communicated between the oxygenerator 51 and the flue gas oxygen mixing pipe 55 is arranged in the flue gas loop pipe 57 in a penetrating way, a fourth unidirectional electric control regulating valve 59 is arranged on the flue gas loop pipe 57, the fourth unidirectional electric control regulating valve 59 is electrically connected with the controller, one end, far away from the flue gas circulation pipe 58, of the flue gas loop pipe 57 is communicated with a chimney 107, a first unidirectional electric control regulating valve 52 is arranged on a pipeline communicated with the smoke exhausting induced draft fan 108, and the first unidirectional electric control regulating valve 52 is electrically connected with the controller.
The implementation principle of the second embodiment of the application is as follows: after the forging furnace assembly 2 works and generates the combustion exhaust gas and the unburnt complete natural gas, the combustion exhaust gas and the unburnt complete natural gas enter the smoke exhaust pipeline 110 through the exhaust manifold 34, then the controller controls the first unidirectional electric control regulating valve 52 to be closed, the controller controls the second unidirectional electric control regulating valve 53 to be opened and limits the opening amount of the second unidirectional electric control regulating valve 53, and the ratio of the opening amount of the second unidirectional electric control regulating valve 53 to the opening amount of the smoke electric control regulating valve 102 is 7:3. under the action of the smoke exhaust induced draft fan 108, a part of combustion exhaust gas and unburnt complete natural gas, namely 30% of combustion exhaust gas and 30% of unburnt complete natural gas, enter the smoke gas ceramic filter 103 through the smoke electric regulating valve 102, another part of combustion exhaust gas and unburnt complete natural gas, namely 70% of combustion exhaust gas and 70% of unburnt complete natural gas, enter the smoke flow pipe 58, and 70% of combustion exhaust gas and 70% of unburnt complete natural gas heat and preserve heat of gas penetrating through a communication pipeline in the smoke flow pipe 58, so that heat loss caused in the conveying process of the gas is avoided, and further power consumption of the air smoke mixing preheater 105 is increased. Meanwhile, the controller controls the third unidirectional electric control regulating valve 56 to be opened, combustion waste gas and unburnt complete natural gas in the flue gas circulation pipe 58 enter the flue gas oxygen mixing pipe 55, the oxygen generator 51 introduces oxygen into the flue gas oxygen mixing pipe 55, so that the combustion waste gas and the unburnt complete natural gas in the flue gas circulation pipe 58 are mixed with oxygen, and finally enter the forging furnace assembly 2 under the action of the air flue gas mixing preheater 105 and the blower 106, the situation that the combustion waste gas and the unburnt complete natural gas in the flue gas circulation pipe 58 have lower oxygen content and cannot be normally combusted is avoided, recycling of partial unburnt complete natural gas is completed, natural gas consumption of the chamber type natural gas forging heating furnace is reduced, natural gas utilization rate is improved, and natural gas energy waste used by the chamber type natural gas forging heating furnace is reduced. When the pressure value detected by the pipeline pressure gauge 54 exceeds a preset value, the controller controls the fourth one-way electric control regulating valve 59 and the first one-way electric control regulating valve 52 to be opened, so that the combustion waste gas and the unburnt natural gas in the flue gas-oxygen mixing loop assembly 5 are rapidly discharged, the excessive pressure in the flue gas-oxygen mixing loop assembly 5 is avoided, equipment damage is further caused, and the use safety of the chamber type natural gas energy-saving and emission-reduction forging heating furnace is improved.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. A chamber type natural gas energy-saving emission-reducing forging heating furnace is characterized in that: the device comprises a forging furnace assembly (2), a natural gas pipeline assembly (4) and an air feeding and discharging assembly (3) which are communicated with the forging furnace assembly (2), a flue gas air mixing loop assembly (1) communicated with the air feeding and discharging assembly (3), a flue gas oxygen mixing loop assembly (5) communicated with the flue gas air mixing loop assembly (1), and a controller electrically connected with the flue gas air mixing loop assembly (1), the flue gas oxygen mixing loop assembly (5), the forging furnace assembly (2), the air feeding and discharging assembly (3) and the natural gas pipeline assembly (4) respectively;
the flue gas-air mixing loop assembly (1) comprises a mixing air pipeline (109), a blower (106), an air flue gas mixing preheater (105), a flue gas ceramic filter (103), an air regulator (104), a blower (101), a smoke exhaust pipeline (110) and a chimney (107);
the air-flue gas mixing and preheating device comprises a mixing air pipeline (109), a gas-flue gas ceramic filter (103), a blower (101), a smoke-discharging induced draft fan (108) and a smoke-discharging induced draft fan (108), wherein one end of the mixing air pipeline (109) is communicated with the gas-sending and exhausting assembly (3), the other end of the mixing air pipeline (109) is communicated with one end of a blower (106), the other end of the blower (106) is communicated with one end of an air-flue gas mixing and preheating device (105), the other end of the air-flue gas mixing and preheating device (105) is communicated with one end of an air regulator (104), the other end of the air regulator (104) is communicated with one end of the gas-flue gas ceramic filter (103), the other end of the gas-flue gas ceramic filter (103) is communicated with the blower (101), the other end of the blower (101) is communicated with one end of a smoke-discharging induced draft fan (108), and the other end of the smoke-discharging induced draft fan (110) is respectively communicated with one end of a smoke-discharging pipeline (110).
The blower (101) is communicated with the chimney (107);
the flue gas and oxygen mixing loop assembly (5) comprises a flue gas and oxygen mixing pipe (55), a flue gas loop pipe (57), a flue gas circulation pipe (58) and an oxygenerator (51);
one end of the flue gas circulation pipe (58) is communicated with the air feeder (101), the other end of the flue gas circulation pipe (58) is communicated with one end of the flue gas oxygen mixing pipe (55), and the other end of the flue gas oxygen mixing pipe (55) is communicated with the air flue gas mixing preheater (105);
the flue gas circulation pipe (58) is also communicated with one end of the flue gas loop pipe (57), and the other end of the flue gas loop pipe (57) is communicated with the chimney (107);
the flue gas and oxygen mixing pipe (55) is communicated with the oxygenerator (51);
a first unidirectional electric control regulating valve (52) is arranged at the communication part of the smoke discharging induced draft fan (108) and the smoke tube (107);
a second unidirectional electric control regulating valve (53) is arranged at the communication part of the flue gas circulation pipe (58) and the blower (101);
a third unidirectional electric control regulating valve (56) is arranged at the communication part of the flue gas circulation pipe (58) and the flue gas oxygen mixing pipe (55);
a fourth unidirectional electric control regulating valve (59) is arranged at the communication part of the flue gas circulation pipe (58) and the flue gas circulation pipe (57);
a pipeline pressure gauge (54) is arranged in the flue gas circulation pipe (58);
the first unidirectional electric control regulating valve (52), the second unidirectional electric control regulating valve (53), the third unidirectional electric control regulating valve (56), the fourth unidirectional electric control regulating valve (59) and the pipeline pressure gauge (54) are electrically connected with the controller;
the mixed air pipeline (109) is arranged in the smoke exhaust pipeline (110) in a penetrating way;
the pipeline for communicating the oxygenerator (51) and the flue gas oxygen mixing pipe (55) is arranged in the flue gas loop pipe (57) in a penetrating way;
the pipeline used for communicating the flue gas ceramic filter (103), the air conditioner (104) and the air flue gas mixing preheater (105) is arranged in the flue gas circulation pipe (58) in a penetrating way.
2. The chamber type natural gas energy-saving and emission-reducing forging heating furnace as recited in claim 1, wherein: a flue gas electric regulating valve (102) is arranged at the communication part of the air feeder (101) and the flue gas ceramic filter (103), and the flue gas electric regulating valve (102) is used for controlling the volume of flue gas entering the flue gas ceramic filter (103);
the flue gas electric regulating valve (102) is electrically connected with the controller.
3. The chamber type natural gas energy-saving and emission-reducing forging heating furnace as recited in claim 1, wherein: the forging furnace component (2) comprises a hearth (21) and a plurality of honeycomb regenerative chambers (22) arranged in the hearth (21);
each honeycomb regenerator (22) is communicated with the air feeding and exhausting assembly (3), each honeycomb regenerator (22) is provided with a burner (23), each burner (23) is communicated with the natural gas pipeline assembly (4), and each burner (23) is electrically connected with the controller;
and a furnace pressure detector (24) is arranged in the hearth (21), and the furnace pressure detector (24) is electrically connected with the controller.
4. The chamber type natural gas energy-saving and emission-reducing forging heating furnace as recited in claim 3, wherein: the air supply and exhaust assembly (3) comprises an air supply header pipe (33), an exhaust header pipe (34), an air supply branch pipe (31) and an exhaust branch pipe (32);
the air supply header pipe (33) is communicated with one end, far away from the blower (106), of the mixed air pipeline (109), the air supply header pipe (33) is communicated with a plurality of air supply branch pipes (31), and one end, far away from the air supply header pipe (33), of the air supply branch pipes (31) is respectively communicated with a plurality of honeycomb body heat storage chambers (22) in a one-to-one correspondence manner;
the exhaust manifold (34) is communicated with one end, far away from the blower (101), of the exhaust pipeline (110), the exhaust manifold (34) is communicated with a plurality of exhaust branch pipes (32), and one end, far away from the exhaust manifold (34), of the exhaust branch pipes (32) is respectively communicated with a plurality of honeycomb body heat-accumulating chambers (22) in a one-to-one correspondence mode.
5. The chamber type natural gas energy-saving and emission-reducing forging heating furnace as recited in claim 4, wherein: each exhaust branch pipe (32) and each air supply branch pipe (31) are provided with a manual control regulating valve (35) and an automatic control pneumatic butterfly valve (36);
each of the automatically controlled pneumatic butterfly valves (36) is electrically connected to the controller.
6. The chamber type natural gas energy-saving and emission-reducing forging heating furnace as recited in claim 3, wherein: the natural gas pipeline assembly (4) comprises a natural gas main pipeline (41) and a plurality of natural gas branch pipelines (42) communicated with the natural gas main pipeline (41), and one ends, far away from the natural gas main pipeline (41), of the natural gas branch pipelines (42) are respectively communicated with the burners (23) in one-to-one correspondence.
7. The chamber type natural gas energy-saving and emission-reducing forging heating furnace as recited in claim 6, wherein: the natural gas main pipeline (41) is provided with a natural gas quick cut-off valve (44), a natural gas flowmeter (43), a natural gas flow automatic regulating valve (45) and a natural gas pressure gauge (48) respectively, and the natural gas quick cut-off valve (44), the natural gas flowmeter (43), the natural gas flow automatic regulating valve (45) and the natural gas pressure gauge (48) are electrically connected with the controller;
and each natural gas branch pipeline (42) is provided with a natural gas branch regulating valve (46) and a natural gas branch electromagnetic valve (47), and the natural gas branch regulating valves (46) and the natural gas branch electromagnetic valves (47) are electrically connected with the controller.
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