CN104818034B - Automatic adjustment method and device for controlling production of nitrogen oxide of coke oven - Google Patents
Automatic adjustment method and device for controlling production of nitrogen oxide of coke oven Download PDFInfo
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- CN104818034B CN104818034B CN201510179117.5A CN201510179117A CN104818034B CN 104818034 B CN104818034 B CN 104818034B CN 201510179117 A CN201510179117 A CN 201510179117A CN 104818034 B CN104818034 B CN 104818034B
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- coke oven
- heating
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- gas
- temperature
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000000571 coke Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 74
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000004458 analytical method Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 28
- 239000003034 coal gas Substances 0.000 claims description 23
- 230000001276 controlling effect Effects 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 230000015572 biosynthetic process Effects 0.000 claims description 17
- 238000009529 body temperature measurement Methods 0.000 claims description 11
- 230000001174 ascending effect Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000005619 thermoelectricity Effects 0.000 claims description 3
- 238000004939 coking Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Coke Industry (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention relates to an automatic adjustment method and device for controlling production of nitrogen oxide of a coke oven. The temperature of a heating flue of the coke oven is measured on line, the calorific value of gas and the air excess coefficient are measured on line or in an auxiliary manner, the data is transmitted into an analysis and control system of a computer, and the gas volume and the heating air volume of each heating flue are adjusted and controlled, so the temperature of the heating flue of the coke oven is controlled to be 950-1,320 DEG C, and the production of the nitrogen oxide in the coke oven is controlled. Compared with the prior art, the method and the device have the beneficial effects that (1) the control of nitrogen oxide emission of the coke oven can be realized, automation of heating adjustment of the coke oven can also be realized, and the method and the device have great significance to technical improvement and environmental protection of coking industry of China; (2) compared with a method for removing the nitrogen oxide through a tail gas treatment method, the method and the device have the advantages of capability of reducing the huge investment and maintenance cost, less investment and quick response.
Description
Technical field
The present invention relates to coke oven control technology field, more particularly, to a kind of control Jiao for top dress coke oven or tamping coke furnace
The Automatic adjustment method of stove NO_x formation and device.
Background technology
At present, the computer heating control of domestic and international coke oven mainly passes through artificial thermometric, and temperature-measuring results are copied into department of computer science
System, carries out data analysiss in computer systems, according to delayed analysis result, carries out artificial mechanical regulation, workload is non-
Chang great, often makes heated condition cannot effectively monitor.Its consequence is using excessive heating coal gas, not only causes the energy
Waste, and excessive heating gas can make coke oven vertical flame path local heating temperature too high in combustion, generate substantial amounts of
Nitrogen oxides.
Nitrogen oxides are the pollutant effulents of serious harm human health and ecological environment, and burning is discharged nitrous oxides
One of main source, the industry standard formulated according to coking industry association, 2014-2015, coking industry discharged nitrous oxides
Standard be 500mg/m3, and almost all of independent coke-oven plant has been above this standard.
Enterprise, for the standard practice of the amount of nitrogen oxides reducing in coke oven exhaust gas, is at flue position by waste gas at present
Drawn with blower fan, carry out catalytic reaction displacement, send air flue emission after reaching discharge standard again back to in air.This way can be made
Become the secondary waste of electric energy, and the investment of processing equipment is huge, and secondary pollution can be brought.
The mechanism generating nitrogen oxides in coke oven combustion process is divided into following three types: 1) temperature heating power type, that is, burn
Aerial nitrogen aoxidizes the nitrogen oxides of generation at high temperature；2) hydrocarbon fuel Quick-type, that is, hydrocarbon system fuel is in combustion
Decompose during burning, the nitrogen oxides of its catabolite and nitrogen reaction generation；3) type of Components Fuel containing n, i.e. organic nitrogen in fuel
Compound aoxidizes the nitrogen oxides of generation in combustion.Wherein temperature heating power type is the main source of nitrogen oxides, that is, refine
The most of the nitrogen oxide producing in burnt production process is caused due to high temperature, when temperature is higher than 1400 DEG C, nitrogen oxides
Exponentially rule increases rapidly growing amount, and when temperature is less than 1400 DEG C, is nearly free from nitrogen oxides.Therefore, control Jiao
Stove flue temperature just can control the generation of nitrogen oxides.
Content of the invention
The invention provides a kind of Automatic adjustment method controlling coke oven NO_x formation, by on-line measurement with real time
Data transfer, timely and accurately grasps the heating parameters at each position of coke oven, heats coal by computer control system accurate adjustment
The flow of gas and heating air controls coke oven heating fire path temperature at 950～1320 DEG C, realizes controlling the life of coke oven nitrogen oxides
The purpose becoming；Invention also provides for the device realizing the method.
In order to achieve the above object, the present invention employs the following technical solutions realization:
A kind of Automatic adjustment method controlling coke oven NO_x formation, by the temperature of on-line measurement coke oven heating quirk
Degree, on-line measurement or subsidiary calorific value of gas and coefficient of excess air, and by incoming for data above computer analysis and Control system
System, regulation and control each heating quirk coal gas amount and heating air capacity, the temperature control making coke oven heating quirk at 950～1320 DEG C,
Thus controlling the generation of nitrogen oxides in coke oven.
Described heating fire path temperature measurement point position at flue standard thermometric quirk and coke oven coke oven uprising tube, survey by calorific value of gas
Amount point and total coal gas amount check point are located on heating gas pipeline, and coal gas amount component check point is located at heating quirk combustor, plus
Quantity of hot air check point is located at air regenerator entrance.
As assistant regulating and controlling means, in addition set a point flue suction force check point in a point flue.
For realizing a kind of device of the Automatic adjustment method controlling coke oven NO_x formation, comprising:
It is arranged on flue standard thermometric quirk, for measuring the flue temperature measurement on-line device of flue temperature；
It is arranged on tedge, for measuring the ascending tube crude-gas temperature measuring equipment of raw gas temperature；
It is arranged on heating gas pipeline supervisor, for the heating gas calorific value measuring calorific value of gas and adjust total coal gas amount
Measurement and adjusting means；
It is arranged on coke oven both sides air regenerator entrance, for measuring and adjusting the heating air mass flow of heating air mass flow
Measurement and adjusting means；
It is arranged on heating quirk combustor, heating quirk combustor is horizontally-arranged and single flue coal gas amount component for adjusting
Heating quirk combustor coal gas quantity regulating device；
Apparatus above is connected with computer analysis and Control system respectively.
Described computer analysis and Control system is dcs or plc.
Described flue temperature measurement on-line device, ascending tube crude-gas temperature measuring equipment are for optical pyrometer, thermoelectricity occasionally
Temperature sensor.
Described heating gas measurement of caloric value and adjusting means are made up of calorific value meter, effusion meter and automatic regulating valve.
Described heating air-flow measurement and adjusting means are made up of effusion meter and automatic regulating valve.
Described heating quirk combustor coal gas quantity regulating device is automatic regulating valve.
Point flue suction force adjusting means on point flue for the other connect setting of described computer analysis and Control system, point cigarette
Road suction adjusting means is a point flue self-checking device.
Compared with prior art, the invention has the beneficial effects as follows:
1) both can realize the control of coke oven discharged nitrous oxides, can achieve the automatization that coke oven heating is adjusted, to me again
The skill upgrading of state's coking circle and environmental conservation are significant；
2) compared with the method for denitrification is gone by vent gas treatment mode, huge investment and maintenance cost are decreased,
Small investment, instant effect.
Brief description
Fig. 1 is the schematic diagram of the method for the invention.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described further:
See Fig. 1, be the schematic diagram of the method for the invention, of the present invention a kind of control coke oven NO_x formation from
Dynamic control method, by the temperature of on-line measurement coke oven heating quirk, on-line measurement or subsidiary calorific value of gas and air mistake
Surplus coefficient, and by incoming for data above computer analysis and Control system, regulate and control coal gas amount and the heating air capacity of each heating quirk,
The temperature control making coke oven heating quirk at 950～1320 DEG C, thus controlling the generation of nitrogen oxides in coke oven.
Described heating fire path temperature measurement point position at flue standard thermometric quirk and coke oven coke oven uprising tube, survey by calorific value of gas
Amount point and total coal gas amount check point are located on heating gas pipeline, and coal gas amount component check point is located at heating quirk combustor, plus
Quantity of hot air check point is located at air regenerator entrance.
As assistant regulating and controlling means, in addition set a point flue suction force check point in a point flue.
For realizing a kind of device of the Automatic adjustment method controlling coke oven NO_x formation, comprising:
It is arranged on flue standard thermometric quirk, for measuring the flue temperature measurement on-line device of flue temperature；
It is arranged on tedge, for measuring the ascending tube crude-gas temperature measuring equipment of raw gas temperature；
It is arranged on heating gas pipeline supervisor, for the heating gas calorific value measuring calorific value of gas and adjust total coal gas amount
Measurement and adjusting means；
It is arranged on coke oven both sides air regenerator entrance, for measuring and adjusting the heating air mass flow of heating air mass flow
Measurement and adjusting means；
It is arranged on heating quirk combustor, heating quirk combustor is horizontally-arranged and single flue coal gas amount component for adjusting
Heating quirk combustor coal gas quantity regulating device；
Apparatus above is connected with computer analysis and Control system respectively.
Described computer analysis and Control system is dcs or plc.
Described flue temperature measurement on-line device, ascending tube crude-gas temperature measuring equipment are for optical pyrometer, thermoelectricity occasionally
Temperature sensor.
Described heating gas measurement of caloric value and adjusting means are made up of calorific value meter, effusion meter and automatic regulating valve.
Described heating air-flow measurement and adjusting means are made up of effusion meter and automatic regulating valve.
Described heating quirk combustor coal gas quantity regulating device is automatic regulating valve.
Point flue suction force adjusting means on point flue for the other connect setting of described computer analysis and Control system, point cigarette
Road suction adjusting means is a point flue self-checking device.
The above automatic regulating valve can be the high temp.-resistant valves such as plug valve, flap valve, point flue self-checking device
For coke oven existing equipment, adjusted using reverse turning bed structure and control.
A kind of operation principle of self-checking device controlling coke oven NO_x formation of the present invention is: is arranged on vertical
Flue temperature measurement on-line measurement device flue temperature on quirk standard thermometric quirk, is arranged on the rising on coke oven coke oven uprising tube
Pipe raw gas temperature measurement apparatus measure ascending tube crude-gas temperature, are arranged on the heating gas heat on heating gas pipeline supervisor
Value measurement mechanism such as calorific value measurement amount calorific value of gas, effusion meter measures total gas flow；It is arranged on coke oven both sides air regenerator
The heating air-flow measurement device of entrance such as effusion meter measurement heating air mass flow；The digitized letter that above measurement apparatus obtain
Breath is delivered in computer analysis and control system by signal conversion and transmission circuit, by computer by the program pre-entering
It is analyzed calculating.After result of calculation is compared with target setting value, computer analysis and control system automatic are adjusted accordingly
For adjusting the automatic regulating valve of coal gas amount in regulating device, such as heating gas measurement and adjusting means, heat air-flow measurement
With the automatic regulating valve being used for regulation heating air mass flow in adjusting means and heating quirk chamber temperature adjusting means.Pass through
Coordination, the temperature control making coke oven heating quirk at 950～1320 DEG C, thus controlling the generation of nitrogen oxides in coke oven.
Claims (8)
1. a kind of Automatic adjustment method controlling coke oven NO_x formation is it is characterised in that pass through on-line measurement coke oven heating
The temperature of quirk, on-line measurement or subsidiary calorific value of gas and coefficient of excess air, and incoming for data above computer is divided
Analysis control system, the coal gas amount of regulation and control each heating quirk and heating air capacity, make the temperature control of coke oven heating quirk 950～
1320 DEG C, thus controlling the generation of nitrogen oxides in coke oven；
Described heating fire path temperature measurement point position at flue standard thermometric quirk and coke oven coke oven uprising tube, calorific value of gas measurement point
It is located on heating gas pipeline with total coal gas amount check point, coal gas amount component check point is located at heating quirk combustor, heating is empty
Tolerance check point is located at air regenerator entrance；
The device that the Automatic adjustment method of coke oven NO_x formation is adopted is controlled to include:
It is arranged on flue standard thermometric quirk, for measuring the flue temperature measurement on-line device of flue temperature；
It is arranged on tedge, for measuring the ascending tube crude-gas temperature measuring equipment of raw gas temperature；
It is arranged on heating gas pipeline supervisor, for the heating gas measurement of caloric value measuring calorific value of gas and adjust total coal gas amount
And adjusting means；
It is arranged on coke oven both sides air regenerator entrance, for measuring and adjusting the heating air-flow measurement of heating air mass flow
And adjusting means；
Be arranged on heating quirk combustor, for adjust heating quirk combustor horizontally-arranged and single flue coal gas amount component plus
Showing tremendous enthusiasm road combustor coal gas quantity regulating device；
Apparatus above is connected with computer analysis and Control system respectively.
2. a kind of Automatic adjustment method controlling coke oven NO_x formation according to claim 1 is it is characterised in that make
For assisting control measures, in addition set a point flue suction force check point in a point flue.
3. a kind of Automatic adjustment method controlling coke oven NO_x formation according to claim 1 is it is characterised in that institute
Stating computer analysis and Control system is dcs or plc.
4. a kind of Automatic adjustment method controlling coke oven NO_x formation according to claim 1 is it is characterised in that institute
State flue temperature measurement on-line device, ascending tube crude-gas temperature measuring equipment is the occasionally temperature sensor of optical pyrometer, thermoelectricity.
5. a kind of Automatic adjustment method controlling coke oven NO_x formation according to claim 1 is it is characterised in that institute
State heating gas measurement of caloric value and adjusting means to be made up of calorific value meter, effusion meter and automatic regulating valve.
6. a kind of Automatic adjustment method controlling coke oven NO_x formation according to claim 1 is it is characterised in that institute
State heating air-flow measurement and adjusting means is made up of effusion meter and automatic regulating valve.
7. a kind of Automatic adjustment method controlling coke oven NO_x formation according to claim 1 is it is characterised in that institute
Stating heating quirk combustor coal gas quantity regulating device is automatic regulating valve.
8. a kind of Automatic adjustment method controlling coke oven NO_x formation according to claim 4 is it is characterised in that institute
State point flue suction force adjusting means on point flue for the other connect setting of computer analysis and Control system, point flue suction force is adjusted
Device is a point flue self-checking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510179117.5A CN104818034B (en) | 2015-04-15 | 2015-04-15 | Automatic adjustment method and device for controlling production of nitrogen oxide of coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510179117.5A CN104818034B (en) | 2015-04-15 | 2015-04-15 | Automatic adjustment method and device for controlling production of nitrogen oxide of coke oven |
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| Publication Number | Publication Date |
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| CN104818034A CN104818034A (en) | 2015-08-05 |
| CN104818034B true CN104818034B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510179117.5A Active CN104818034B (en) | 2015-04-15 | 2015-04-15 | Automatic adjustment method and device for controlling production of nitrogen oxide of coke oven |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753443A (en) * | 2016-12-28 | 2017-05-31 | 安徽工业大学 | The system of nitrogen oxides in a kind of coke oven exhaust gas from Sources controlling |
| CN112280570A (en) * | 2020-09-29 | 2021-01-29 | 唐山中润煤化工有限公司 | Method for controlling sulfur and nitrate in source of coke oven flue gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1021338C (en) * | 1988-04-15 | 1993-06-23 | 克鲁普科普斯有限公司 | Method for reducing no content of smoke during heating coke oven and coke oven for applying to process |
| US5506782A (en) * | 1993-01-20 | 1996-04-09 | Mitsubishi Chemical Corporation | Operation management system for coke oven |
| CN101372622A (en) * | 2007-08-20 | 2009-02-25 | 尚文彬 | Automation control method for coke oven heating |
| CN102665868A (en) * | 2009-11-18 | 2012-09-12 | 蒂森克虏伯伍德有限公司 | Method for reducing nitrogen oxides from the exhaust gas of a coke oven |
| CN203203981U (en) * | 2013-04-22 | 2013-09-18 | 鞍山翰玛传感技术有限公司 | Nitrogen oxide detection system for coke oven block |
-
2015
- 2015-04-15 CN CN201510179117.5A patent/CN104818034B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1021338C (en) * | 1988-04-15 | 1993-06-23 | 克鲁普科普斯有限公司 | Method for reducing no content of smoke during heating coke oven and coke oven for applying to process |
| US5506782A (en) * | 1993-01-20 | 1996-04-09 | Mitsubishi Chemical Corporation | Operation management system for coke oven |
| CN101372622A (en) * | 2007-08-20 | 2009-02-25 | 尚文彬 | Automation control method for coke oven heating |
| CN102665868A (en) * | 2009-11-18 | 2012-09-12 | 蒂森克虏伯伍德有限公司 | Method for reducing nitrogen oxides from the exhaust gas of a coke oven |
| CN203203981U (en) * | 2013-04-22 | 2013-09-18 | 鞍山翰玛传感技术有限公司 | Nitrogen oxide detection system for coke oven block |
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| CN104818034A (en) | 2015-08-05 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170210 Address after: 114020 Anshan city of Liaoning Province Qianshan Hongqi Street No. 903 room 6 Patentee after: Liaoning Acu-Rite coking energy saving and Environmental Protection Engineering Technology Co Ltd Address before: 114001 Hunan street, Anshan, Eastern Liaoning, No. 111-65 Patentee before: Liu Yexuan |
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| TR01 | Transfer of patent right |