CN107314666B - A kind of economical gas furnace cupola running gear and method - Google Patents
A kind of economical gas furnace cupola running gear and method Download PDFInfo
- Publication number
- CN107314666B CN107314666B CN201610619587.3A CN201610619587A CN107314666B CN 107314666 B CN107314666 B CN 107314666B CN 201610619587 A CN201610619587 A CN 201610619587A CN 107314666 B CN107314666 B CN 107314666B
- Authority
- CN
- China
- Prior art keywords
- seal valve
- gas
- end seal
- group
- hot end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/08—Shaft or like vertical or substantially vertical furnaces heated otherwise than by solid fuel mixed with charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/22—Arrangements of heat-exchange apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/26—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/007—Systems for reclaiming waste heat including regenerators
Abstract
The present invention provides a kind of economical gas furnace cupola running gear and method, including gas-fired cupola, it is characterized in that: being provided with fusing preheating section in the middle part of the gas-fired cupola, the upper end of the gas-fired cupola is provided with feeding seal valve, the lower end of the gas-fired cupola is connected to burner, the burner connection fuel gas conduit and high temperature air pipe, the top of the gas-fired cupola connects high-temperature flue gas discharge pipe, oxidant injection hole groups are provided on the high-temperature flue gas discharge pipe, the high-temperature flue gas discharge pipe connects high-temperature thermal storage body group pair by hot end control valve group with high temperature air Guan Jun, the high-temperature thermal storage body group connects fume pipe and cold air pipe to by cold end control valve group.The present invention can guarantee that baker, continuous operation and blowing out operation reach exhaust gas temperature at 150 DEG C ± 20 DEG C, reduces the gas consumption in the stages such as baker, continuous operation, blowing out operation, reduces the heat that flue gas emission is taken away to greatest extent.
Description
Technical field
The present invention relates to gas-fired cupola fields, in particular, be related to a kind of economical gas furnace cupola running gear and
Method.
Background technique
As environmental protection pressure improves, for cast iron, cast steel < 5t/h coke furnace cupola, will be soaring by electric furnace and combustion gas
Furnace is substituted.
The power consumption of furnace melting cast iron, cast steel is mostly in 600-750kwh/t at present, it is therefore desirable to be equipped with larger, expensive
Transformation facility, and undertake and be lost compared with high transformer, cause most foundry enterprise power consumption costs using paddy valence electricity from 0.35 yuan/
Kwh at least increases 0.1-0.15 member/kwh.The operation cost of enterprise is not only improved, but also causes huge waste of energy.Therefore
Gas-fired cupola will be paid attention to as one of main selection equipment.
Combustion gas cokeless furnace cupola is the furnace cupola with natural gas, coke-stove gas, liquefied gas etc. for fuel, belongs to the world today
The state-of-the-art technology of cast iron smelting in range, it is soaring that the developed countries such as age in last century 60-70 America and Soviet Union of Great Britain and France successively carry out combustion gas
The research and use of furnace, typical technology are United States Patent (USP) (patent No. US5224985).The nineties, due to coke scarcity, exploitation is burnt
The substitute of charcoal, gradually have studied coke and natural gas share, the furnace cupola of net gas, make the technology in European Union, the Middle East, beauty
It is used in a certain ranges such as state, India, Japan, South Korea.
Chinese invention patent (application number: 201310553218.5) discloses a kind of gas-fired cupola waste heat of rock wool production
The method of cascade utilization is 1400-1800 DEG C of flue-gas temperature, strong using jet flow, convection current using the high-temperature flue gas after fusing section
The injection radiation recuperator change, fired again is preheated, and so that combustion air temperature is reached 500-900 DEG C, is realized the ladder of natural gas
Grade energy utilization.
Exist although gas-fired cupola substantially reduces the discharge of carbon monoxide, particulate matter etc., when it runs a large amount of useless
Heat is mainly manifested in three aspects: baker stage gas consumption, melts latter stage gas consumption, contains 1-5%CO in smoke evacuation.The initial stage of baker needs
Exit gas temperature is continuously improved and improves in-furnace temperature, is to overheat Ceramic Balls to baker latter stage, exhaust gas temperature needs reach
To 1000 DEG C or more, basic baker gas consumption reaches 600m3/ time.Such as with day fusing 8 hours, then ton converts 75m3, and natural gas is molten
Change only needs 50-80m3, therefore be not suitable for intermittent duty user, it is most preferably that continuous, long age furnace is just suitable.Latter stage is melted, with
The fusing progress bed of material is thinning, and exhaust gas temperature increases, and finishes until melting, the time about 1 hour, also results in the wave of a large amount of natural gas
Take.For the oxidation for preventing fusing metal, CO content in smoke generally in 1-5%, accounts for the 3-10% of natural gas heat, there are huge
Waste.
The present invention is on the basis of comprehensive advanced gas-fired cupola both at home and abroad, for widely used currently on the market
It has a rest and runs furnace cupola, realize the gas-fired cupola of interval melting and melting latter stage and melting mid-term same consumption energy, further genralrlization
Natural gas further decreases casting industry energy consumption and pollutant emission in the application range of casting industry.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of economical gas furnace cupola running gear and method, maximum limits
Degree reduces baker, fusing latter stage amount of consumed gas and the heat for recycling CO in smoke evacuation, reduces operating cost.
The present invention realizes goal of the invention using following technological means:
A kind of economical gas furnace cupola running gear, including gas-fired cupola, it is characterized in that: the gas-fired cupola
Middle part is provided with fusing preheating section, and the upper end of the gas-fired cupola is provided with feeding seal valve, under the gas-fired cupola
End connection burner, the burner connection fuel gas conduit and high temperature air pipe, the top of the gas-fired cupola connect high temperature cigarette
Gas discharge pipe, oxidant injection hole groups are provided on the high-temperature flue gas discharge pipe, and the high-temperature flue gas discharge pipe and high temperature are empty
Tracheae passes through hot end control valve group connection high-temperature thermal storage body group pair, and the high-temperature thermal storage body group connects to by cold end control valve group
Cigarette receiving tracheae and cold air pipe；
The high-temperature thermal storage body group is to comprising heat storage group one and heat storage group two, the heat storage group one and heat storage group
Two are made of muti-piece honeycomb ceramics heat storage respectively, and partition, the storage are provided between affiliated heat storage group one and heat storage group two
The two sides of hot body group one are provided with cold end one and hot end two, and two both ends of heat storage group are provided with cold end two and hot end two, institute
It states hot end one and hot end two and connects the hot end control valve group, the cold end one and cold end two connect the cold end control valve group.
It is further limited as to the technical program, the cold end control valve group includes that cold end seal valve one, cold end are close
Seal valve two, cold end seal valve three, cold end seal valve four, pneumatic operated valve and partition, the cold end seal valve one, cold end seal valve three with
The cold end seal valve two, cold end seal valve four are spaced on or off, and the partition is by the cold end control valve
Group is divided into two individual cold end chambers.
It is further limited as to the technical program, the hot end control valve group includes that hot end seal valve one, hot end are close
Seal valve two, hot end seal valve three, hot end seal valve four, pneumatic operated valve and partition, the hot end seal valve one, hot end seal valve three with
The hot end seal valve two, hot end seal valve four are spaced on or off, and the partition is by the hot end control valve
Group is divided into two individual hot end chambers.
It is further limited as to the technical program, the high-temperature flue gas discharge pipe includes round metal tube and thermal insulating material
The bed of material.
It is further limited as to the technical program, the oxidant injection hole groups include doughnut, spray-hole and control
Valve processed.
It is further limited as to the technical program, smoke evacuation thermocouple and CO sensor is provided in the fume pipe,
Hearth thermocouple is provided in the gas-fired cupola, the smoke evacuation thermocouple, CO sensor and hearth thermocouple are all connected with control
Device processed.
A kind of method of the economical gas furnace cupola running gear of claim 1, characterized in that include the following steps:
(1) baker initial operating stage, cold end seal valve two, cold end seal valve four, hot end seal valve two and hot end seal valve four
It opens, and cold end seal valve one, cold end seal valve three, hot end seal valve one and hot end seal valve three are closed, air is through cold air
Pipe, the cold end seal valve two of cold end control valve group, high-temperature thermal storage body group one cold end one enter in high-temperature thermal storage body group one, then
The hot end seal valve four that hot end control valve group is entered through hot end one, enters high temperature air pipe, the combustion gas with fuel gas conduit outflow
It burns into burner, the flue gas of generation enters in high-temperature flue gas discharge pipe through melting preheating section；Flue gas is from high temperature cigarette
After the outflow of gas discharge pipe, cold end control valve is entered after hot end seal valve two, hot end two enter heat storage group, then through cold end two
It enters back into fume pipe after the cold end seal valve four of group and discharges out of the furnace；
When discharge fume thermocouple measuring temperature be more than 150 DEG C after, controller control cold end seal valve two, cold end seal valve four,
Hot end seal valve two and hot end seal valve four are closed, and cold end seal valve one, cold end seal valve three, hot end seal valve one and hot end
Sealing valve three is opened, and flue gas is after the outflow of high-temperature flue gas discharge pipe, after hot end seal valve three, hot end one enter heat storage group,
Fume pipe is entered back into after cold end one enters the cold end seal valve one of cold end control valve group again and is discharged out of the furnace, and heat storage group is inhaled
The heat in flue gas is received, so that the temperature of fume pipe discharge flue gas reduces；Air is through cold air pipe, cold end control valve at this time
The cold end seal valve three of group, cold end two flow through hot end two, the heat that air is absorbed by heat storage group after entering heat storage group
It is heated, then enters high temperature air pipe after the hot end seal valve one of hot end control valve, the combustion gas with fuel gas conduit outflow enters
Burner burns, after thermocouple measurement flue-gas temperature of discharging fume is more than 150 DEG C, controller control cold end seal valve two, cold
Sealing valve four, hot end seal valve two and hot end seal valve four is held to open, and cold end seal valve one, cold end seal valve three, hot end are close
It seals valve one and hot end seal valve three is closed, repeat the above process, controller controls in hot end control valve group and cold end control valve group
Control valve alternately be in the state of turning on or off so that flue gas is alternately through high-temperature thermal storage body group one and high-temperature thermal storage body group
Two, the temperature of the flue gas of control fume pipe discharge is no more than 150 DEG C；
(2) when hearth thermocouple measurement flue-gas temperature is more than 650 DEG C and CO sensor detects CO concentration > 500ppm,
Open control valve, a certain amount of oxidant by doughnut, spray-hole be ejected into the CO in high-temperature flue gas discharge pipe and in flue gas into
Row oxidation reaction generates carbon dioxide and releases heat, and flue-gas temperature further increases, and enters hot end control valve group；
(3) when hearth thermocouple measurement flue-gas temperature is more than 1200 DEG C, baker work is completed, and opens feeding seal valve 3
Intervals are carried out, realize continuous operation；
(4) when needing to carry out blowing out, close feeding seal valve, gradually proportionally reduced by controller cold air pipe and
Fuel gas conduit supply, supply reaches the 1/3 of design discharge after about 30 minutes, no longer reduction cold air pipe and fuel gas conduit supply
Amount, and combustion gas and volume of air ratio are controlled for 1:9.5-10.5, until the material until all melting preheating section all melts；
(5) when furnace outage time was less than 1 hour, maintaining fuel gas conduit supply is the 1/3 of design discharge, combustion gas and air body
Product ratio control is in 1:10-12；
(6) when furnace outage time is small greater than 8, stop the supply of fuel gas conduit and air hose, end of run.
Compared with prior art, the advantages and positive effects of the present invention are: the present invention can guarantee baker, continuous operation and stop
Furnace operation reaches exhaust gas temperature at 150 DEG C ± 20 DEG C, reduces the gas consumption in the stages such as baker, continuous operation, blowing out operation,
The heat that flue gas emission is taken away is reduced to greatest extent, while CO in flue gas being fired again and discharges heat and further recycles,
It realizes the utilization for maximizing gas thermal energy, further decreases the operating cost of gas-fired cupola, also further reduced pollutant
The discharge of CO belongs to energy saving and environment friendly new invention technology.
Detailed description of the invention
Fig. 1 is system pie graph of the invention
Fig. 2 is the functional schematic of cold end control valve group operating status one of the invention
Fig. 3 is the functional schematic of cold end control valve group operating status two of the invention.
Fig. 4 is the functional schematic of hot end control valve group operating status one of the invention
Fig. 5 is the functional schematic of hot end control valve group operating status two of the invention.
Fig. 6 is oxidant injection hole groups structural schematic diagram of the invention
In figure, 1- gas-fired cupola, 2- melts preheating section, 3- feeding seal valve, 4- burner, the discharge of 5- high-temperature flue gas
Pipe, 51- metal tube, 52- adiabator layer, 6- oxidant injection hole groups, 61- doughnut, 62- spray-hole, 63- control valve, 7-
Oxidant, the hot end 8- control valve group, 811- hot end seal valve one, 812- hot end seal valve two, 813- hot end seal valve three, 814-
Hot end seal valve four, 821- cold end seal valve one, 822- cold end seal valve two, 823- cold end seal valve three, 824- cold end seal
Valve four, 83- pneumatic control valve one, 84- partition one, 86- pneumatic control valve two, 87- partition two, the hot end 85- chamber, 88- cold end
Chamber, 9- high-temperature thermal storage body group pair, 91- high-temperature thermal storage body group one, 92- high-temperature thermal storage body group two, 911- cold end one, 921- cold end
The hot end two, 912- one, the hot end 922- two, 10- cold end control valve group, 93- partition, 94- honeycomb heat accumulation body, 11- fume pipe, 12-
Cold air pipe, 13- high temperature air pipe, 14- fuel gas conduit, 15- flue gas, 16- air, 18- hearth thermocouple.
Specific embodiment
Further be described in detail is made to the present invention with preferred embodiment with reference to the accompanying drawing.
Referring to Fig. 1-Fig. 6, the present invention includes gas-fired cupola 1, and the middle part of the gas-fired cupola 1 is provided with fusing preheating
Section 2, the upper end of the gas-fired cupola 1 are provided with feeding seal valve 3, and the lower end of the gas-fired cupola 1 is connected to burner 4,
The burner 4 connects fuel gas conduit 14 and high temperature air pipe 13, and the top of the gas-fired cupola 1 connects high-temperature flue gas discharge pipe
5, oxidant injection hole groups 6, the high-temperature flue gas discharge pipe 5 and high temperature air pipe are provided on the high-temperature flue gas discharge pipe 5
13 connect high-temperature thermal storage body group to 9 by hot end control valve group 8, and the high-temperature thermal storage body group passes through cold end control valve group to 9
10 connection fume pipes 11 and cold air pipe 12.
The high-temperature thermal storage body group includes heat storage group 1 and heat storage group 2 92, one 91 He of heat storage group to 9
Heat storage group 2 92 is made of muti-piece honeycomb ceramics heat storage respectively, is arranged between affiliated heat storage group 1 and heat storage group 2 92
There is partition 93, the two sides of the heat storage group 1 are provided with cold end 1 and hot end 1,2 92 liang of the heat storage group
End is provided with cold end 2 921 and hot end 2 922, and the hot end 1 and hot end 2 922 connect the hot end control valve group 8, institute
It states cold end 1 and cold end 2 921 connects the cold end control valve group 10.
The cold end control valve group 10 includes cold end seal valve 1, cold end seal valve 2 822, cold end seal valve three
823, cold end seal valve 4 824, pneumatic control valve 1 and partition 1, the cold end seal valve 1, cold end seal valve three
823 is on or off with the cold end seal valve 2 822, the interval of cold end seal valve 4 824, and the partition 1 will
The cold end control valve group 10 is divided into two individual cold end chambers 88.
The hot end control valve group 8 include hot end seal valve 1, hot end seal valve 2 812, hot end seal valve 3 813,
Hot end seal valve 4 814, pneumatic control valve 2 86 and partition 2 87, the hot end seal valve 1, hot end seal valve 3 813
On or off with the hot end seal valve 2 812, the interval of hot end seal valve 4 814, the partition 2 87 is by institute
It states hot end control valve group 8 and is divided into two individual hot end chambers 85.
The high-temperature flue gas discharge pipe 5 includes round metal tube 51 and adiabator layer 52.
The oxidant injection hole groups 6 include doughnut 61, spray-hole 61 and control valve 63, and spray-hole 62 is to be uniformly distributed
Circular hole, have two kinds of apertures, 62 Jet Penetration Depth of spray-hole respectively reaches at the 1/2 and 1/4 of 5 diameter d of high-temperature flue gas discharge pipe,
Spray-hole 62 divides single arrangement or double arrangement；The oxidant 7 that spray-hole 62 sprays can be oxygen, air or high excess air
The flue gas of coefficient.
It is provided with smoke evacuation thermocouple and CO sensor in the fume pipe 11, is provided with burner hearth in the gas-fired cupola 1
Thermocouple 18, the smoke evacuation thermocouple, CO sensor and hearth thermocouple 18 are all connected with controller.
A kind of operation method of economical gas furnace cupola, includes the following steps:
(1) baker initial operating stage, cold end seal valve 2 822, cold end seal valve 4 824, hot end seal valve 2 812 and hot end
Sealing valve 4 814 is opened, and cold end seal valve 1, cold end seal valve 3 823, hot end seal valve 1 and hot end seal valve
3 813 close, and air 16 is through cold air pipe 12, the cold end seal valve 2 822 of cold end control valve group 10, high-temperature thermal storage body group 1
Cold end 1 enter in high-temperature thermal storage body group 1, then the hot end for entering hot end control valve group 8 through hot end 1 is close
Valve 4 814 is sealed, high temperature air pipe 13 is entered, the combustion gas flowed out with fuel gas conduit 14 enters burner 4 and burns, the cigarette of generation
Gas 15 enters in high-temperature flue gas discharge pipe 5 through melting preheating section 2；Flue gas 15 is after the outflow of high-temperature flue gas discharge pipe 5, through hot end
After sealing valve 2 812, hot end 2 922 enter heat storage group 92, then enter through cold end 2 921 cold end of cold end control valve group 10
Fume pipe 11 is entered back into after sealing valve 4 824 and is discharged out of the furnace；
After thermocouple measuring temperature of discharging fume is more than 150 DEG C, controller controls cold end seal valve 2 822, cold end seal valve
4 824, hot end seal valve 2 812 and hot end seal valve 4 814 are closed, and cold end seal valve 1, cold end seal valve 3 823,
Hot end seal valve 1 and hot end seal valve 3 813 are opened, and flue gas 15 is after the outflow of high-temperature flue gas discharge pipe 5, through hot end seal
After valve 3 813, hot end 1 enter heat storage group 91, then enter through cold end 1 cold end seal of cold end control valve group 10
Fume pipe 11 is entered back into after valve 1 and is discharged out of the furnace, and heat storage group 91 absorbs the heat in flue gas 15, so that fume pipe
The temperature of 11 discharge flue gases reduces；At this time air 16 through cold air pipe 12, cold end control valve group 10 cold end seal valve 3 823,
Cold end 2 921, which enters after heat storage group 92, flows through hot end 2 922, added by the heat that air 16 is absorbed by heat storage group 92
Heat, then high temperature air pipe 13 is entered after the hot end seal valve 1 of hot end control valve 8, the combustion gas flowed out with fuel gas conduit 14
It burns into burner 4, after 15 temperature of thermocouple measurement flue gas of discharging fume is more than 150 DEG C, controller controls cold end seal
Valve 2 822, cold end seal valve 4 824, hot end seal valve 2 812 and hot end seal valve 4 814 are opened, and cold end seal valve one
821, cold end seal valve 3 823, hot end seal valve 1 and hot end seal valve 3 813 are closed, and are repeated the above process, controller
Control valve in control hot end control valve group 8 and cold end control valve group 10 is alternately in the state of turning on or off, so that flue gas
15 alternately through high-temperature thermal storage body group 1 and high-temperature thermal storage body group 2 92, and the temperature for controlling the flue gas that fume pipe 11 is discharged does not surpass
Cross 150 DEG C；
(2) when hearth thermocouple 18 measures, 15 temperature of flue gas is more than 650 DEG C and CO sensor detects CO concentration > 500ppm
When, control valve 63 is opened, a certain amount of oxidant 7 is ejected into high-temperature flue gas discharge pipe 5 by doughnut 61, spray-hole 62 and cigarette
CO in gas 15 carries out oxidation reaction, generates carbon dioxide and releases heat, 15 temperature of flue gas further increases, and enters
Hot end control valve group 8；
(3) when hearth thermocouple 18, which measures flue-gas temperature, is more than 1200 DEG C, baker work is completed, and opens feeding seal valve
3 carry out intervals, realize continuous operation；
(4) when needing to carry out blowing out, feeding seal valve 3 is closed, cold air pipe is gradually proportionally reduced by controller
12 and 14 supply of fuel gas conduit, supply reaches the 1/3 of design discharge after about 30 minutes, no longer reduction cold air pipe 12 and combustion gas
14 supply of pipe, and combustion gas and volume of air ratio are controlled for 1:9.5-10.5, until the material for all melting preheating section is whole
Until fusing；
(5) when furnace outage time was less than 1 hour, maintaining 14 supply of fuel gas conduit is the 1/3 of design discharge, combustion gas and air
Volume ratio is controlled in 1:10-12；
(6) when furnace outage time is small greater than 8, stop the supply of fuel gas conduit 14 and air hose 12, end of run.
Claims (7)
1. a kind of economical gas furnace cupola running gear, including gas-fired cupola, it is characterized in that: in the gas-fired cupola
Portion is provided with fusing preheating section, and the upper end of the gas-fired cupola is provided with feeding seal valve, the lower end of the gas-fired cupola
It is connected to burner, the burner connection fuel gas conduit and high temperature air pipe, the top of the gas-fired cupola connect high-temperature flue gas
Discharge pipe is provided with oxidant injection hole groups, the high-temperature flue gas discharge pipe and high temperature air on the high-temperature flue gas discharge pipe
Guan Jun connects high-temperature thermal storage body group pair by hot end control valve group, and the high-temperature thermal storage body group is connected to by cold end control valve group
Fume pipe and cold air pipe；
The high-temperature thermal storage body group to comprising heat storage group one and heat storage group two, divide by the heat storage group one and heat storage group two
It is not made of muti-piece honeycomb ceramics heat storage, partition, the heat storage is provided between affiliated heat storage group one and heat storage group two
The two sides of group one are provided with cold end one and hot end two, and two both ends of heat storage group are provided with cold end two and hot end two, the heat
End one and hot end two connect the hot end control valve group, and the cold end one and cold end two connect the cold end control valve group.
2. economical gas furnace cupola running gear according to claim 1, it is characterized in that: the cold end control valve group packet
Cold end seal valve one, cold end seal valve two, cold end seal valve three, cold end seal valve four, pneumatic operated valve and partition are included, the cold end is close
Envelope valve one, cold end seal valve three be spaced with the cold end seal valve two, cold end seal valve four it is on or off, it is described
The cold end control valve group is divided into two individual cold end chambers by partition.
3. economical gas furnace cupola running gear according to claim 1, it is characterized in that: the hot end control valve group packet
Hot end seal valve one, hot end seal valve two, hot end seal valve three, hot end seal valve four, pneumatic operated valve and partition are included, the hot end is close
Envelope valve one, hot end seal valve three be spaced with the hot end seal valve two, hot end seal valve four it is on or off, it is described
The hot end control valve group is divided into two individual hot end chambers by partition.
4. economical gas furnace cupola running gear according to claim 1, it is characterized in that: the high-temperature flue gas discharge pipe
Including round metal tube and adiabator layer.
5. economical gas furnace cupola running gear according to claim 1, it is characterized in that: the oxidant injection hole groups
Including doughnut, spray-hole and control valve.
6. economical gas furnace cupola running gear according to claim 1, it is characterized in that: being provided in the fume pipe
It discharges fume thermocouple and CO sensor, is provided with hearth thermocouple, the smoke evacuation thermocouple, CO sensor in the gas-fired cupola
Controller is all connected with hearth thermocouple.
7. a kind of method of the economical gas furnace cupola running gear of claim 1, characterized in that include the following steps:
(1) baker initial operating stage, cold end seal valve two, cold end seal valve four, hot end seal valve two and hot end seal valve four are opened,
And cold end seal valve one, cold end seal valve three, hot end seal valve one and hot end seal valve three are closed, air is through cold air pipe, cold
The cold end one of the cold end seal valve two, high-temperature thermal storage body group one of holding control valve group enters in high-temperature thermal storage body group one, then through heat
End one enters the hot end seal valve four of hot end control valve group, enters high temperature air pipe, and the combustion gas with fuel gas conduit outflow enters
Burner burns, and the flue gas of generation enters in high-temperature flue gas discharge pipe through melting preheating section；Flue gas is arranged from high-temperature flue gas
After outlet pipe outflow, cold end control valve group is entered after hot end seal valve two, hot end two enter heat storage group, then through cold end two
It enters back into fume pipe after cold end seal valve four and discharges out of the furnace；
After thermocouple measuring temperature of discharging fume is more than 150 DEG C, controller controls cold end seal valve two, cold end seal valve four, hot end
Sealing valve two and hot end seal valve four are closed, and cold end seal valve one, cold end seal valve three, hot end seal valve one and hot end seal
Valve three is opened, and flue gas after hot end seal valve three, hot end one enter heat storage group, then passes through after the outflow of high-temperature flue gas discharge pipe
Cold end one enters back into fume pipe and discharges out of the furnace after entering the cold end seal valve one of cold end control valve group, and heat storage group absorbs cigarette
Heat in gas, so that the temperature of fume pipe discharge flue gas reduces；Air is through cold air pipe, cold end control valve group at this time
Cold end seal valve three, cold end two, which enter after heat storage group, flows through hot end two, added by the heat that air is absorbed by heat storage group
Heat, then high temperature air pipe is entered after the hot end seal valve one of hot end control valve, the combustion gas with fuel gas conduit outflow enters burning
Device burns, and after thermocouple measurement flue-gas temperature of discharging fume is more than 150 DEG C, it is close that controller controls cold end seal valve two, cold end
Valve four, hot end seal valve two and hot end seal valve four is sealed to open, and cold end seal valve one, cold end seal valve three, hot end seal valve
One and hot end seal valve three close, repeat the above process, controller controls the control in hot end control valve group and cold end control valve group
Valve processed is alternately in the state of turning on or off, so that flue gas is alternately through high-temperature thermal storage body group one and high-temperature thermal storage body group two,
The temperature for controlling the flue gas of fume pipe discharge is no more than 150 DEG C；
(2) it when hearth thermocouple measurement flue-gas temperature is more than 650 DEG C and CO sensor detects CO concentration > 500ppm, opens
Control valve, a certain amount of oxidant are ejected into high-temperature flue gas discharge pipe by doughnut, spray-hole and carry out oxygen with the CO in flue gas
Change reaction, generate carbon dioxide and release heat, flue-gas temperature further increases, and enters hot end control valve group；
(3) when hearth thermocouple measurement flue-gas temperature is more than 1200 DEG C, baker work is completed, and is opened feeding seal valve 3 and is carried out
Intervals realize continuous operation；
(4) when needing to carry out blowing out, feeding seal valve is closed, cold air pipe and combustion gas are gradually proportionally reduced by controller
Pipe supply, supply reaches the 1/3 of design discharge after about 30 minutes, no longer reduction cold air pipe and fuel gas conduit supply, and
It controls combustion gas and volume of air ratio is 1:9.5-10.5, until the material until all melting preheating section all melts；
(5) when furnace outage time was less than 1 hour, maintaining fuel gas conduit supply is the 1/3 of design discharge, combustion gas and volume of air ratio
Example control is in 1:10-12；
(6) when furnace outage time is small greater than 8, stop the supply of fuel gas conduit and air hose, end of run.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610619587.3A CN107314666B (en) | 2016-07-29 | 2016-07-29 | A kind of economical gas furnace cupola running gear and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610619587.3A CN107314666B (en) | 2016-07-29 | 2016-07-29 | A kind of economical gas furnace cupola running gear and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107314666A CN107314666A (en) | 2017-11-03 |
| CN107314666B true CN107314666B (en) | 2019-02-22 |
Family
ID=60184552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610619587.3A Expired - Fee Related CN107314666B (en) | 2016-07-29 | 2016-07-29 | A kind of economical gas furnace cupola running gear and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107314666B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB659141A (en) * | 1949-05-03 | 1951-10-17 | Otto Metzner | Improvements relating to the utilization of the heat contained in the waste gases from shaft furnaces |
| CN101726175A (en) * | 2009-12-08 | 2010-06-09 | 赵文鹤 | Heat accumulating type external heat blast cupola furnace |
| CN103063011A (en) * | 2012-12-19 | 2013-04-24 | 朱瑞辉 | Energy-saving environment-friendly high-blast-temperature cupola system equipment |
| CN103363802A (en) * | 2012-03-29 | 2013-10-23 | 中国石油化工股份有限公司 | Flame heating furnace |
| CN203657429U (en) * | 2013-11-11 | 2014-06-18 | 山东建筑大学 | Gas-fired cupola furnace for production of rock wool |
-
2016
- 2016-07-29 CN CN201610619587.3A patent/CN107314666B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB659141A (en) * | 1949-05-03 | 1951-10-17 | Otto Metzner | Improvements relating to the utilization of the heat contained in the waste gases from shaft furnaces |
| CN101726175A (en) * | 2009-12-08 | 2010-06-09 | 赵文鹤 | Heat accumulating type external heat blast cupola furnace |
| CN103363802A (en) * | 2012-03-29 | 2013-10-23 | 中国石油化工股份有限公司 | Flame heating furnace |
| CN103063011A (en) * | 2012-12-19 | 2013-04-24 | 朱瑞辉 | Energy-saving environment-friendly high-blast-temperature cupola system equipment |
| CN203657429U (en) * | 2013-11-11 | 2014-06-18 | 山东建筑大学 | Gas-fired cupola furnace for production of rock wool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107314666A (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104121581B (en) | A kind of high efficency low NOx tubular heater low concentration oxygen-enriched combustion system and burner | |
| CN202012913U (en) | Novel flue gas self-reflux low-oxygen combustor | |
| CN207716416U (en) | The continous way Self-heat-storage flameless burner of the double preheatings of air/gas | |
| CN107130079B (en) | It is a kind of to prepare CO using coal gas of converter2And the method and system of cycle injection | |
| CN101832708A (en) | Heat storage immersed isothermal smelting furnace | |
| CN201711490U (en) | Small-sized three-stage push rod continuous forging heating furnace | |
| CN203625447U (en) | Furnace rear alloy roasting system of steelmaking converter | |
| CN107906516A (en) | A kind of continous way Self-heat-storage flameless burner of the double preheatings of air/gas | |
| CN105858649B (en) | Graphite high temperature puffing stove | |
| CN103206708B (en) | A kind of heat-accumulating burner | |
| CN101846447A (en) | Down draft kiln | |
| CN102012029B (en) | Heat-storing combustion apparatus and biomass gas heating system | |
| CN102146490B (en) | Reduction iron making method and device | |
| CN107314666B (en) | A kind of economical gas furnace cupola running gear and method | |
| CN101942574B (en) | Pulse-combustion heat accumulating type metal magnesium reduction furnace | |
| CN101093140A (en) | Heat storage type vertical metal magnesium reducing furnace | |
| CN202830108U (en) | Strip steel continuous annealing regenerative burning furnace | |
| CN202730150U (en) | Power generation system utilizing waste heat of waste gas at tail of blast furnace hot blast stove | |
| CN205838912U (en) | A kind of coke oven combustion chamber segmentation supply heater | |
| CN101749935A (en) | Atmosphere-adjustable high-temperature haydite sintering device | |
| CN204724842U (en) | A kind of online ladle accumulation of heat roaster | |
| CN201575688U (en) | High temperature ceramsite sintering device with atmosphere capable of being adjusted | |
| CN201322564Y (en) | Air preheater | |
| CN100398668C (en) | Technological process and apparatus for heating high concentration CO and other reducing gas | |
| CN105925276A (en) | Staged air supplying and heating device and method for combustion chamber of coke furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200617 Address after: 214191 a-109, building 9, Dongfang Steel City Phase II, Xishan District, Wuxi City, Jiangsu Province Patentee after: Wuxi jinwanquan Stainless Steel Co.,Ltd. Address before: Room 3104, building 2, xiujingyayuan, No. 703, geguan Road, Yanjiang Industrial Development Zone, Nanjing City, Jiangsu Province, 210048 Patentee before: NANJING LIUQUAN NEW ENERGY TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |