CN106247353B - A kind of blast furnace gas diffusing ignition system - Google Patents
A kind of blast furnace gas diffusing ignition system Download PDFInfo
- Publication number
- CN106247353B CN106247353B CN201610643689.9A CN201610643689A CN106247353B CN 106247353 B CN106247353 B CN 106247353B CN 201610643689 A CN201610643689 A CN 201610643689A CN 106247353 B CN106247353 B CN 106247353B
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- Prior art keywords
- furnace gas
- blast furnace
- regulating valve
- igniter
- gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q9/00—Pilot flame igniters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The present invention discloses a kind of blast furnace gas diffusing ignition system, including blast-furnace gas diffusing tower, it is characterized in that, the bottom connection blast furnace gas pipe of the blast-furnace gas diffusing tower, regulating valve I is provided on blast furnace gas pipe, the tower top of the blast-furnace gas diffusing tower is provided with igniter burner, igniter and coal gas of converter pipe are connected on igniter burner, regulating valve II is provided on coal gas of converter pipe, regulating valve I, igniter and regulating valve II are connect with Iganition control system.Blast furnace gas diffusing ignition system of the present invention is only lighted a fire when blast furnace gas diffuses, and closes the air source of burning gas after lighting a fire successfully in time, effectively reduces the consumption of burning gas, so as to greatly reduce cost, it increases economic efficiency, lowers energy consumption, improve the feature of environmental protection.
Description
Technical field
The present invention relates to blast furnace gas diffusing technical field more particularly to a kind of blast furnace gas diffusing ignition systems.
Background technology
In smelter, coal gas can be generated along with production.For example smelting iron, it makes steel, is generated during coking etc.
Coal gas enter pipe network by dust separation, most can carry out production recycling to pipe network coal gas, and sub-fraction can discharge
Into air.Pipe network is transfer canal and storage device in itself.If fruit part pipe network is without gas chamber unicom, then, pipe network
Pressure itself can be fluctuated with the variation of production discharge coal gas and coal gas user, in order to maintain ductwork pressure constant in a model
In enclosing, usual pipe network can connect one or more gas bleeding systems, and present metallurgy industry is all that blast furnace gas is passed through fire
Flame is discharged into air after lighting, reduce pollution.
Blast furnace gas calorific value is low, can not directly be lighted with high-voltage pulses device, is typically necessary burning gas, with burning
Gas lighted by high-voltage pulses device after as ever-burning flame come the blast furnace gas that ignites.Existing blast furnace gas diffusing igniting
The coke-stove gas of generally use outsourcing is struck sparks as burning gas, and using manual electronic, and regulating valve is diffused by adjusting manually
When carrying out coal gas diffusion, it is impossible to ensure the stabilization of pipeline pressure, while dangerous situation not in time of lighting a fire in order to prevent well
Occur, the mode of igniting is using ever-burning flame, and which energy consumption is larger, both not energy-efficient or not environmentally, and production cost is high.
Invention content
The technical problems to be solved by the invention and the technical assignment proposed are that the prior art is improved, and provide one kind
Blast furnace gas diffusing ignition system solves in current technology blast furnace gas diffusing igniting using coke-stove gas as burning gas,
And by the way of ever-burning flame, energy consumption is big, not environmentally, the problem of production cost is high.
For solution more than technical problem, the technical scheme is that：
A kind of blast furnace gas diffusing ignition system, including blast-furnace gas diffusing tower, which is characterized in that the blast furnace gas
The bottom of diffusing tower connects blast furnace gas pipe, and regulating valve I, the tower top of the blast-furnace gas diffusing tower are provided on blast furnace gas pipe
There is provided igniter burners, igniter and coal gas of converter pipe are connected on igniter burner, regulating valve II is provided on coal gas of converter pipe,
Regulating valve I, igniter and regulating valve II are connect with Iganition control system.Blast furnace gas diffusing ignition system of the present invention turns
For producer gas as burning gas, at low cost, usage economy is more preferable, while not by the way of ever-burning flame, is opened in regulating valve I
When carrying out blast furnace gas diffusing, then regulating valve II is opened so that coal gas of converter is entered in igniter burner, and passes through igniter point
Combustion so that blast furnace gas combustion, after be discharged into air, reduce pollution, the consumption of burning gas can be effectively reduced using such mode
Dosage so as to greatly reduce cost, is increased economic efficiency, and lowers energy consumption, improves the feature of environmental protection.
Further, the igniter burner is provided with 3 on the tower top of blast-furnace gas diffusing tower, and in circumference side
It is uniformly distributed upwards, improves Ignition Stability, blast furnace gas calorific value is low, it is ensured that can blast furnace gas effectively be lighted burning.
Further, the igniter burner is made of gas jets of igniting, flame detecting probe and guarantor's flame cylinder, simple in structure, is made
It is good with stability.
Further, the regulating valve I uses butterfly valve, and butterfly valve opening and closing element is a discoidal butterfly plate, in valve body
It is rotated around the axis of its own, so as to achieve the purpose that keying or adjusting, changes the deflection angle of butterfly plate, you can control medium
Flow, simple in structure, small, light-weight, material consumption save, and installation dimension is small, and switch is rapid, have the control of good fluid
Characteristic and closing sealing performance, regulating valve II use solenoid valve, facilitate the break-make of Iganition control system control coal gas of converter pipe.
Further, thermocouple is additionally provided on the igniter burner by temperature transmitter and Iganition control system to connect
It connects, monitors the temperature of igniter burner so as to the successfully normal combustion that judges whether to light a fire, avoid the occurrence of loss of ignition and lead to blast furnace
The situation of the in line serious pollution air of coal gas.
Further, the Iganition control system is automatically controlled using the realization of PLC softwares, can be with without manual control
The consumption of coal gas of converter is more accurately controlled, realizes energy-saving, reduction production cost.
Further, the step that automatically controls of the Iganition control system is：A, Iganition control system monitoring regulating valve I
Open and-shut mode；B, when regulating valve I is opened, Iganition control system opens the regulating valve II on coal gas of converter pipe and starting ignition
Device is lighted a fire；C, the temperature regime of thermocouple returns to Iganition control system, and electric thermo-couple temperature carries out secondary point when being less than preset value
Fire；D, the regulating valve II on igniter and coal gas of converter pipe is closed when electric thermo-couple temperature is more than preset value.Traditional blast furnace gas
It is that the regulating butterfly valve on blast furnace gas pipe is adjusted using PID modules to diffuse, and each PID modules are with blast furnace coal
The pressure of gas does setup parameter, and blast-furnace gas pressure fluctuation is larger, if realizing igniting PID control by manifold gas pressures,
Ignition procedure frequent start-stop will make field control more chaotic.Therefore the application is by monitoring the opening and closing of regulating valve I come linkage point
The start and stop of fiery program, regulating valve I open then starting ignition program, and ignition procedure is then closed in butterfly valve closing, and field control is simple, easily
In realization, ignition procedure frequent start-stop is avoided, extends service life of equipment.
Further, the step of carrying out regnition when the electric thermo-couple temperature is less than preset value cycle is carried out until heat
Galvanic couple temperature is more than preset value, with 30 seconds for a cycle.Occur light a fire unsuccessful situation when, be repeated igniting until
Thermocouple is heated to more than preset value temperature after lighting a fire successfully, is avoided the occurrence of loss of ignition and is caused blast furnace gas in line serious
The situation of air is polluted, improves safety in utilization.
Further, the temperature preset value of the thermocouple is 150 DEG C, and suitable temperature avoids excessively consuming converter coal
Gas reduces production cost.
Compared with prior art, the invention has the advantages that：
Blast furnace gas diffusing ignition system of the present invention is only lighted a fire when blast furnace gas diffuses, and is lighted a fire successfully
It closes the air source of burning gas in time afterwards, effectively reduces the consumption of burning gas, so as to greatly reduce cost, improve economical
Benefit lowers energy consumption, improves the feature of environmental protection；It realizes full-automatic chain igniting, objects under unattended condition is fully achieved, and can
With on-site manual, Central Control Room manual ignition, easy to use and flexible；The configuration of the present invention is simple, it is easy to accomplish, manufacture is at low cost, warp
It helps efficient.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the work flow diagram of Iganition control system.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
A kind of blast furnace gas diffusing ignition system disclosed by the embodiments of the present invention, realization is energy-saving, utilizes coal gas of converter
Blast furnace gas is lighted automatically for pyrophoric fuel medium, and manipulation is convenient, at low cost, and the feature of environmental protection is high.
As shown in Figure 1, a kind of blast furnace gas diffusing ignition system, including blast-furnace gas diffusing tower 1, blast-furnace gas diffusing tower
1 bottom connects blast furnace gas pipe 2, and regulating valve I6 is provided on blast furnace gas pipe 2, and regulating valve I6 uses butterfly valve, to facilitate adjusting
The flow of circulation, the tower top of blast-furnace gas diffusing tower 1 are provided with igniter burner 3, and igniter burner 3 is visited by gas jets of igniting, fire inspection
Head and guarantor's flame cylinder form, and are connected to igniter 4 and coal gas of converter pipe 5 on igniter burner 3, adjusting is provided on coal gas of converter pipe 5
Valve II7, igniter burner 3 is provided with 3 on the tower top of blast-furnace gas diffusing tower 1, and is uniformly distributed in a circumferential direction, point
Thermocouple 9 is additionally provided on baked wheaten cake mouth 3 to connect with Iganition control system 8 by temperature transmitter 10, capital equipment is stainless
Steel making, has the advantages of anticorrosive, the long-life, and regulating valve II7 uses solenoid valve, regulating valve I6, igniter 4 and regulating valve
II7 is connect with Iganition control system 8.After 3 points of igniter burner catches fire, if having blast furnace gas in blast-furnace gas diffusing tower 1,
So 1 main burner of blast-furnace gas diffusing tower will be lighted automatically, form the big flame of 4m or so.It is burnt after lighting a fire successfully close to point
9 temperature of thermocouple of mouth 3 can rise rapidly about 600 DEG C, and Iganition control system 8 diffuses igniting according to electric thermo-couple temperature judgement is
No success.
Diffused after transformation igniter with on-site manual, Central Control Room is manual and automatic three kinds of control modes, control manually
During mode, manual single step igniting can be completed in control room or with regard to cabinet, flame sensing signal is also shown on cabinet panel on the spot；From
During dynamic control mode, it can be automatically performed in control room and diffuse igniting, objects under unattended condition is fully achieved.
Iganition control system 8 is automatically controlled using the realization of PLC softwares, is only lighted a fire when blast furnace gas diffuses, point
The air source of burning gas is closed after igneous work(in time, effectively reduces the consumption of burning gas, so as to greatly reduce cost.This
For embodiment by monitoring the opening and closing of regulating valve I come the start and stop of chain ignition procedure, regulating valve I opens then starting ignition program, butterfly
Ignition procedure is then closed in valve closing, as shown in Fig. 2, the step that automatically controls of Iganition control system 8 is：A, Iganition control system 8
Monitor the open and-shut mode of regulating valve I6；B, when regulating valve I6 is opened, Iganition control system 8 opens the tune on coal gas of converter pipe 5
Section valve II7 simultaneously light a fire by initial igniter 4；C, the temperature regime of thermocouple 9 returns to Iganition control system 8, and 9 temperature of thermocouple is low
Regnition is carried out when 150 DEG C of preset value, and repeat step C process until the temperature of thermocouple 9 more than 150 DEG C, with 30
Second carries out for a cycle cycle；D, igniter 4 and coal gas of converter pipe 5 are closed when 9 temperature of thermocouple is more than 150 DEG C of preset value
On regulating valve II7.
Table 1
| Sparking mode | Coal gas of converter consumption |
| Manual ever-burning flame | 210 sides/h |
| Automatic ignition | 100 sides/h |
Table 2
| It ignites gas medium | Blast-furnace gas diffusing tower applicability | Usage amount (is estimated) | Monovalent (estimating) | The moon expends |
| Blast furnace gas | It is at low cost but easily flame-out, it does not apply to | 0.08 yuan/m3 | ||
| Coal gas of converter | It is applicable in | 210 sides/h | 0.13 yuan/m3 | 7.86 ten thousand |
| Coke-stove gas | It is applicable in | 100 sides/h | 0.4 yuan/m3 | 8.64 ten thousand |
| Natural gas | Calorific value ratio turns coke-stove gas and doubles, and is applicable in | 80 sides/h | 2.88 yuan/m3 | 47.69 ten thousand |
Table 1 is counted for manual ever-burning flame and autoignition fuel gas amount, and table 2 is combustion gas use cost, itself uses blast furnace
Coal gas diffusion ignition system greatly reduces use cost, and reduces the consumption for the energy sources amount, reduces the pollution to environment.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (6)
1. a kind of blast furnace gas diffusing ignition system, including blast-furnace gas diffusing tower (1), which is characterized in that the blast furnace coal
The bottom of gas diffusing tower (1) connects blast furnace gas pipe (2), and regulating valve I (6), the blast furnace coal are provided on blast furnace gas pipe (2)
The tower top of gas diffusing tower (1) is provided with igniter burner (3), and igniter (4) and coal gas of converter pipe are connected on igniter burner (3)
(5), regulating valve II (7), regulating valve I (6), igniter (4) and regulating valve II (7) and igniting are provided on coal gas of converter pipe (5)
Control system (8) connects, and thermocouple (9) is additionally provided on the igniter burner (3) and passes through temperature transmitter (10) and igniting
Control system (8) connects, and the Iganition control system (8) is automatically controlled using the realization of PLC softwares, the ignition control system
System (8) the step that automatically controls be：A, the open and-shut mode of Iganition control system (8) monitoring regulating valve I (6)；B, in regulating valve I
(6) when opening, Iganition control system (8) opens the regulating valve II (7) on coal gas of converter pipe (5) and initial igniter (4) is lighted a fire；
C, the temperature regime of thermocouple (9) returns to Iganition control system (8), and thermocouple (9) temperature carries out secondary when being less than preset value
Igniting；D, the regulating valve II (7) on igniter (4) and coal gas of converter pipe (5) is closed when thermocouple (9) temperature is more than preset value.
2. blast furnace gas diffusing ignition system according to claim 1, which is characterized in that the igniter burner (3) exists
3 are provided with, and be uniformly distributed in a circumferential direction on the tower top of blast-furnace gas diffusing tower (1).
3. blast furnace gas diffusing ignition system according to claim 1, which is characterized in that the igniter burner (3) by
Ignite gas jets, flame detecting probe and guarantor's flame cylinder composition.
4. blast furnace gas diffusing ignition system according to claim 1, which is characterized in that the regulating valve I (6) is used
Butterfly valve, regulating valve II (7) is using solenoid valve.
5. blast furnace gas diffusing ignition system according to claim 1, which is characterized in that described thermocouple (9) temperature
The step of regnition is carried out during less than preset value cycle carries out until thermocouple (9) temperature is more than preset value, with 30 seconds for one
A period.
6. blast furnace gas diffusing ignition system according to claim 1, which is characterized in that the temperature of the thermocouple (9)
It is 150 DEG C to spend preset value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610643689.9A CN106247353B (en) | 2016-08-08 | 2016-08-08 | A kind of blast furnace gas diffusing ignition system |
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| CN201610643689.9A CN106247353B (en) | 2016-08-08 | 2016-08-08 | A kind of blast furnace gas diffusing ignition system |
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| CN106247353B true CN106247353B (en) | 2018-07-06 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107677142A (en) * | 2017-10-18 | 2018-02-09 | 江苏永钢集团有限公司 | Sintering ignition furnace fuel control system |
| CN109357284A (en) * | 2018-10-19 | 2019-02-19 | 北京首钢国际工程技术有限公司 | A kind of intelligent ignition device and method for open flame combustion nozzle |
| CN109340788A (en) * | 2018-11-01 | 2019-02-15 | 临涣焦化股份有限公司 | A kind of coke oven emission igniter kept burning day and night |
| CN110345508B (en) * | 2019-07-15 | 2020-12-25 | 中国科学技术大学 | Petroleum gas ignition device |
| CN112017391A (en) * | 2020-08-03 | 2020-12-01 | 柳州钢铁股份有限公司 | Flame fire extinguishing detection method for blast furnace gas diffusion chimney |
| CN112375865A (en) * | 2020-11-30 | 2021-02-19 | 江苏欧亚环保科技有限公司 | Centralized control diffusion ignition device and ignition method thereof |
| CN114542982A (en) * | 2022-02-25 | 2022-05-27 | 圣戈班管道系统有限公司 | Automatic switching and interlocking ignition control method and system for double-path gas source of blast furnace gas diffusing tower |
| CN115682026B (en) * | 2022-10-31 | 2023-07-25 | 山东莱钢永锋钢铁有限公司 | Pneumatic ignition structure suitable for blast furnace coal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201206125Y (en) * | 2008-05-07 | 2009-03-11 | 中冶焦耐自动化系统有限公司 | Release control apparatus for coke oven gas collector |
| JP6122273B2 (en) * | 2012-10-23 | 2017-04-26 | 日新製鋼株式会社 | Burner equipment |
| CN103789472A (en) * | 2014-02-11 | 2014-05-14 | 山西太钢不锈钢股份有限公司 | Blast-furnace gas diffusing ignition method |
| CN105219900B (en) * | 2014-06-11 | 2018-01-05 | 鞍钢股份有限公司 | Blast furnace gas diffusing method and automatic control system |
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