CN109385285A - A kind of coke oven heats optimization system automatically - Google Patents
A kind of coke oven heats optimization system automatically Download PDFInfo
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- CN109385285A CN109385285A CN201811388842.3A CN201811388842A CN109385285A CN 109385285 A CN109385285 A CN 109385285A CN 201811388842 A CN201811388842 A CN 201811388842A CN 109385285 A CN109385285 A CN 109385285A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
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Abstract
A kind of coke oven provided by the invention heats optimization system, including feedforward control system and feedback control system automatically；The feedforward control system, by energy predicting model, calculates the setting value of control parameter for acquiring coke oven production real time data, and this setting value is sent to coke oven control system, realizes feedforward coarse adjustment；Feedback system includes that fire falls monitoring system, mean flue temperature detection system and exhaust gas measurement of oxygen content system after described, by fuzzy control model, calculates the setting value of control parameter, and this setting value is sent to coke oven control system, realizes rear feed accurate adjustment.The coke oven heats optimization system by the various condition element variable quantities of acquisition, analysis coking production automatically, calculates coke oven heating gas flow setting value, instructs coke oven heating control and its optimization, realize the uniformly heated automatic control of coke oven.
Description
Technical field
The invention belongs to coke oven field of automation technology, in particular to a kind of coke oven heats optimization system automatically.
Background technique
China is coking industry the world's strongest nation, and year coke output is more than 4.4 hundred million tons, but most of the country coke oven
Control management level also rests on Basic automation level, i.e. coke oven heating substantially or uses I&C system, can only by have through
After the coke oven fire tuning technical staff tested is by artificial timing thermometric, heating system parameter is set by rule of thumb, it is steady by I&C system
Determine heating parameters.
In coking by coke oven production process, when production environment and working condition change, need to heating cycle and heating
Gas flow will be finely adjusted, and traditional coke oven heating control is manually to be calculated each coke oven by the engineer of coking workshop to add
The heating cycles parameter such as hot coal throughput is kept straight on by the operator of each coke-stove gas group.This production control method exists very
More problems: flow of personnel is frequent, causes its experience, horizontal height different；Information is imperfect, without data supporting, can only accomplish
Coarse adjustment is realized in estimation；One class of secondary flue temperature detection is relied on, often coke oven heating control is lagged, coke oven is caused to add
Thermal control is frequent；Each carbonization chamber coke mature condition is unpredictable before fire door of unsnaping, but is pacified with fixed coking time
Discharging plan is arranged, the not so good carbonization chamber of Partial mature degree a large amount of over-emitting black exhausts when plucking coke pushing is often resulted in, causes environment dirty
Dye also reduces coke quality.
Furthermore, if can accurately control coking end time and be affected for coke quality.Coking end time is usually adopted at present
Manually determine:
(1) determine that fire is fallen according to the color of raw coke oven gas
At the same position (vertical tube of such as tedge, see right figure) of each carbonization chamber raw coke oven gas guiding system, a band is reserved
The fire of lid, which is fallen, determines hole.Fire is carried out when falling judgement, lid is taken off and escapes a small amount of raw coke oven gas, backlight detects by an unaided eye raw coke oven gas color
Variation.Before fire is fallen, the color of raw coke oven gas is gradually faded away by dense yellow；Fire falls behind, and the color of raw coke oven gas is Lan Baise
's.The color of raw coke oven gas is set in a flash " fire falls the moment " by what yellow was transformed into blue white by us.
(2) determine that fire is fallen according to raw coke oven gas burned flame
At night and when can not see the color of raw coke oven gas clearly, the raw coke oven gas in tedge can also be ignited, be fallen through fire
Determine flame color when hole observation raw coke oven gas burning, is " fire falls the moment " at the time of flame switchs to transparent rice yellow.
These manual methods not only require skilled worker high, and accuracy is poor, and may also influence technique worker people
Body safety.
Summary of the invention
Technical problem: in order to solve the defects of prior art, the present invention provides a kind of coke ovens to heat optimization system automatically.
Technical solution: a kind of coke oven provided by the invention heats optimization system, including feedforward control system and rear feed automatically
Control system；The feedforward control system is used to acquire coke oven production real time data, calculates the setting value of control parameter, and will
This setting value is sent to coke oven control system, realizes feedforward coarse adjustment；Feedback system includes that fire falls monitoring system, mean flue temperature after described
Detection system and exhaust gas measurement of oxygen content system calculate the setting value of control parameter, and this setting value are sent to coke oven control
System processed realizes rear feed accurate adjustment.
As an improvement, the coke oven production real time data include gas pressure, flow, calorific value, temperature, cooperation moisture content of coal,
Heating gas composition, pushing coke operation plan.
It is improved as another kind, the fire falls monitoring system for determining that fire falls the moment, calculates coking end time, sets time and knot
Burnt time, including raw gas temperature detection device (1), data acquisition and control device (2)；
The raw gas temperature detection device (1) includes one group of thermocouple (11), one group of high temperature-resistant compensation lead (12), institute
Thermocouple (11) are stated at the threeway that the tedge of carbonizing chamber of coke oven is connect with bridge tube, the high temperature-resistant compensation lead (12) sets
Near thermocouple (11)；
The data acquisition and control device (2) includes data acquisition module (21), data memory module (22)；The number
According to acquisition and processing module (21) for receiving the temperature data from raw gas temperature detection device (1), when determining that fire is fallen
It carves, acquires coaling time information, fire and fall time information, coke pushing time information, calculate coking end time, set time and coking time,
And temperature data, time information of coalingging, fire are fallen into time information, coke pushing time information, coking end time, set time and coking time
It is sent to data memory module (22)；Data memory module (22) is for storing from data acquisition and processing (DAP) module (21)
Temperature data, time information of coalingging, fire fall time information, coke pushing time information, coking end time, set time and coking time.
As a further improvement, the thermocouple (11) is the armoured K-thermocouple of resistance to raw coke oven gas corrosion.
As a further improvement, the high temperature-resistant compensation lead (12) is externally provided with ceramic fibre thermal insulation layer.
As a further improvement, the thermocouple (11) and high temperature-resistant compensation lead (12) are arranged in pairs.
As a further improvement, when the data acquisition and processing (DAP) module (21) works:
Determine the method that fire falls the moment are as follows: determine according to the temperature data of thermocouple (11) in each carbonizing chamber, temperature decline
Point is that fire falls the moment；
The calculation method of coking end time are as follows: coking end time=fire falls the moment-and coalings the moment；
Set the calculation method of time are as follows: set the time=coke pushing moment-fire falls the moment；
The calculation method of coking time are as follows: coke pushing moment-coaling the moment.
It is improved as another kind, by energy predicting model, calculates the setting value of control parameter；The energy predicting mould
Type are as follows:
QIt needs=f1(G,W,V)；
QFor=f2(q,Q,t)；
T1=f3(QIt needs, QFor)；
Wherein, Q is heat, and G is coal capacity, and W is moisture content, and V is fugitive constituent, and q is calorific value of gas, and Q is gas flow, t fire
It falls and falls moment, T for fire1For the coarse adjustment temperature that feedovers.
It is improved as another kind, by fuzzy control model, calculates the setting value of control parameter；The Fuzzy Control molding
Type are as follows: T2=f4(tFire is fallen, tStraight trip, OO2)；
Wherein, tFire is fallenMoment, t are fallen for fireStraight tripFire when for standard mean flue temperature falls moment, OO2For flue gas oxygen content, T2For
Rear feed accurate adjustment temperature.
It is improved as another kind, the mean flue temperature detection system is for detecting coke oven mean flue temperature；The exhaust gas is oxygen-containing
Amount detection systems are for detecting coke oven combustion exhaust gas oxygen content.
The utility model has the advantages that coke oven provided by the invention heats optimization system by acquiring, analyzing the various of coking production automatically
Condition element variable quantity calculates coke oven heating gas flow setting value, instructs coke oven heating control and its optimization, realize coke
The uniformly heated automatic control of furnace.
Specifically, the application is compared with the existing technology, there is advantage following prominent:
(1) system automatic parameter acquisition situation of change, and calculating automatically according to system and Controlling model are controlled automatically
System stablizes coke oven heat engineering state, eliminates the case where relying on individual skill level, ability, sense of responsibility.
(2) stablize and improve coke quality: after heating optimization system automatically using coke oven, coke oven furnace temperature is stable, uniform, refining
Coke out is avoidable there is a situation where green coke and overdone.It is improved coke quality.
(3) energy saving: after heating optimization system automatically using coke oven, so that the heating of furnace group is in equilibrium state, make furnace group
The supply of calorific requirement and the energy is in a basic balance, coke excessive fire phenomenon is eliminated as much as, to reach energy-efficient purpose.
(4) protect environment: after heating optimization system automatically using coke oven, coke oven heating control is stablized, and can prejudge in real time
Coke maturity is eliminated due to green coke bring coke pushing over-emitting black exhaust situation, can also eliminate localized hyperthermia's bring coke oven flue gas
NOXRise phenomenon.
(5) extend the coke oven service life: after heating optimization system automatically using coke oven, the furnace temperature of oven battery is uniform, stablizes, charge of coke
Maturity state is good, and when coke pushing, charge of coke is smoothly released, and do not encounter difficulties coke pushing, and the temperature of furnace wall is not in excessively high and too low
Phenomenon, so that the coking furnace shaft service life be made to extend.
(6) coke oven management digitization: after heating optimization system automatically using coke oven, be conducive to operator, workshop and factory
Portion administrative staff understand the heating system of oven battery and coke mature condition in real time to be directly acquainted with from the picture of computer, favorably
In the judgement of each factor of coke oven production process, opinion of dealing in time improves the management level of coke oven production.
Detailed description of the invention
Fig. 1 is the schematic diagram that coke oven heats optimization system automatically.
Fig. 2 is the structural schematic diagram that fire falls monitoring system.
Fig. 3 is coking end time and the relational graph for setting the time.
Specific embodiment
Optimization system is heated automatically to coke oven of the present invention below to further illustrate.
Coke oven heats optimization system, including feedforward control system and feedback control system automatically.
The feedforward control system, by energy predicting model, calculates control for acquiring coke oven production real time data
The setting value of parameter, and this setting value is sent to coke oven control system, realize feedforward coarse adjustment；The coke oven production real time data
Including gas pressure, flow, calorific value, temperature, cooperation moisture content of coal, heating gas composition, pushing coke operation plan.
The energy predicting model are as follows:
QIt needs=f1(G,W,V)；
QFor=f2(q,Q,t)；
T1=f3(QIt needs, QFor)；
Wherein, Q is heat, and G is coal capacity, and W is moisture content, and V is fugitive constituent, and q is calorific value of gas, and Q is gas flow, and t is
Fire falls moment, T1For the coarse adjustment temperature that feedovers.
That is, QIt needsFor heat, coal capacity, moisture content function, and functional relation can rule of thumb and repeatedly modify acquisition, no
Homologous ray function has certain difference；
QForThe function at moment is fallen for calorific value of gas, gas flow, fire, and functional relation rule of thumb and can be modified repeatedly
It obtains, different system functions have certain difference；
T1For QIt needs、QForFunction, and functional relation can rule of thumb and repeatedly modify acquisition, and different system functions have one
Determine difference.
Feedback system includes that fire falls monitoring system, mean flue temperature detection system and exhaust gas measurement of oxygen content system after described, is led to
Fuzzy control model is crossed, the setting value of control parameter is calculated, and this setting value is sent to coke oven control system, realizes rear feed
Accurate adjustment.
The fire falls monitoring system and is used to determine that fire falls the moment, calculates coking end time, sets time and coking time, including waste coal
Gas temperature-detecting device (1), data acquisition and control device (2)；
The raw gas temperature detection device (1) includes one group of thermocouple (11), one group of high temperature-resistant compensation lead (12), institute
Thermocouple (11) are stated at the threeway that the tedge of carbonizing chamber of coke oven is connect with bridge tube, the high temperature-resistant compensation lead (12) sets
Near thermocouple (11)；The thermocouple (11) is the armoured K-thermocouple of resistance to raw coke oven gas corrosion；The high temperature resistant compensation is led
Line (12) is externally provided with ceramic fibre thermal insulation layer；The thermocouple (11) and high temperature-resistant compensation lead (12) are arranged in pairs.
The data acquisition and control device (2) includes data acquisition and processing (DAP) module (21), data memory module
(22),；The data acquisition and processing (DAP) module (21) is for receiving the temperature number from raw gas temperature detection device (1)
According to judgement fire falls the moment, acquires coaling time information, fire and falls time information, coke pushing time information, when calculating coking end time, setting
Between and coking time, and temperature data, time information of coalingging, fire fallen into time information, coke pushing time information, coking end time, is set
Time and coking time are sent to data memory module (22)；Data memory module (22) for store from data acquisition and
The temperature data of processing module (21), time information of coalingging, fire fall time information, coke pushing time information, coking end time, set the time
And coking time.
When the data acquisition and processing (DAP) module (21) works, Fig. 2 is seen:
Determine the method that fire falls the moment are as follows: determine according to the temperature data of thermocouple (11) in each carbonizing chamber, temperature decline
Point is that fire falls the moment；
The calculation method of coking end time are as follows: coking end time=fire falls the moment-and coalings the moment；
Set the calculation method of time are as follows: set the time=coke pushing moment-fire falls the moment；
The calculation method of coking time are as follows: coke pushing moment-coaling the moment.
The system determines coking end time using the temperature change of raw coke oven gas:
Thermocouple is set at a certain position of carbonization chamber raw coke oven gas equipment leading out, for measuring the temperature of raw coke oven gas.Waste coal
The temperature of gas regular variation can occur in each coking cycles, using thermocouple, can detecte out raw gas temperature and go out
At the time of existing highest point；Fire falls phenomenon and appears in after raw gas temperature peaks, and utilizes the color etc. of observation raw coke oven gas
Method can determine that actual fire falls the moment.At the time of raw gas temperature peaks and fire fall it is linear between moment the two
Relationship, according to their correlativity, in later production application, so that it may using raw gas temperature peak when
It carves, extrapolates actual fire and fall the moment.
The application determines " fire falls the moment " according to raw gas temperature, and moment to fire of coalingging certainly falls elapsed time at moment and is
" coking end time ".After the coking time of coke oven determines, " the target coking end time " of coke oven heating just must determine, it is burnt
The basis of furnace thermal technology management.Moment to elapsed time at coke pushing moment being fallen from fire to cry " setting the time ", charge of coke is setting time phase,
The heating cycle of coke oven remains unchanged, and mainly allows the heated further homogenization of charge of coke each point, and make Center Temperature of Coke Cake by
Step is increased to the finishing temperature of coking.The influence that received heat is supplied, need to be balanced, " fire falls the moment " are a variable in retort process
Point, when heat supply is bigger than normal, the generation that fire falls phenomenon can earlier, when heat supply is less than normal, and the generation that fire falls phenomenon can evening.
Thermal technology's management technique of " fire falls management ", at the time of key is that " fire is fallen " occurs in the process for control coking.Make that actual " fire is fallen
The deviation of time " and " target coking end time " within the limits prescribed, makes coking effect reach charge of coke full maturity and is disappeared
The heat of consumption is minimum.
Coking end time administrative standard
| Project | Objective management value |
| Per day coking end time | Standard coking end time ± 10 minute |
| Coking end time difference R between carbonization chamber in class | ≤ 60 minutes |
The mean flue temperature detection system is for detecting coke oven mean flue temperature；The exhaust gas measurement of oxygen content system is for examining
Survey coke oven combustion exhaust gas oxygen content.
The fuzzy control model are as follows: T2=f4(tFire is fallen, tStraight trip, OO2)；
Wherein, tFire is fallenMoment, t are fallen for fireStraight tripFire when for standard mean flue temperature falls moment, OO2For flue gas oxygen content, T2For
Rear feed accurate adjustment temperature.
That is, T2Fire when falling moment, standard mean flue temperature for fire falls the function at moment, flue gas oxygen content, and functional relation
Acquisition can rule of thumb and be repeatedly modified, different system functions have certain difference.
It cites an actual example again below, to illustrate the present invention.
In Henan, 6 meters of coke ovens of coking chemical Co., Ltd are implemented:
The novel armour of 110 resistance to raw coke oven gas corrosion is installed at the tedge threeway of the 110 hole carbonization chamber of furnace roof of 6 meters of coke ovens
K-type thermocouple is filled, corresponding compensating wire and I/O module is equipped with, converts numerical variable for temperature signal, real-time storage is in coke
Database in the industrial personal computer increased newly in furnace control room, the fire in industrial personal computer fall administrative model in real time for each carbonization chamber raw gas temperature
Numerical variable carries out model and calculates and reasoning operation, forms the coking index and underheat or degree of superheat data of each carbonization chamber charge of coke
It is supplied to the coke oven heating energy model use that coke oven heats optimization system automatically, so that the heating gas flow to coke oven carries out
It automatically controls to realize feedback regulation, while showing that these parameters, emulation mode animation, technical clarification supply in human-computer interaction interface
Coking technology personnel are manually set and are adjusted coke oven heating thermal regulation before third step is not carried out, and are carried out in advance semi-automatic
Change coke oven heating Optimization Work.
The system passes through mathematical modulo by the raw gas temperature of all carbonization chambers number of on-line real time monitoring coke oven furnace group
Type determines coking state and coking time locating for charge of coke, in real time prejudges the charge of coke mature condition of all carbonization chambers number,
These states are all shown in man-machine interface, prompt coke oven heat engineering state and each heat (batch) number coke whether full maturity can
To carry out coke pushing production, the coke oven heating energy model that these parameters of later period heat optimization system automatically also for coke oven is used,
To carry out automatically controlling the heating gas flow of coke oven to realize feedback regulation.It is advantageous that can be independent of individual
Coking state locating for the charge of coke of all carbonization chamber heat (batch) numbers is predicted in 24 hours in sense of responsibility and personal experience, round-the-clock ground in advance in real time
And mature condition, most directly reflect whether the heat engineering state of coke oven needs to adjust and how to adjust, to raising coke quality, subtracts
Few coke oven environment pollution reduces coking energy consumption and plays the role of key, is the state-of-the-art coke oven thermal technology management of current coking industry
Technology and tool.
Claims (10)
1. a kind of coke oven heats optimization system automatically, it is characterised in that: including feedforward control system and feedback control system；It is described
Feedforward control system calculates the setting value of control parameter, and this setting value is sent for acquiring coke oven production real time data
To coke oven control system, feedforward coarse adjustment is realized；Feedback system includes that fire falls monitoring system, mean flue temperature detection system and gives up after described
Gas measurement of oxygen content system calculates the setting value of control parameter, and this setting value is sent to coke oven control system, after realization
Present accurate adjustment.
2. a kind of coke oven according to claim 1 heats optimization system automatically, it is characterised in that: the coke oven production is real-time
Data include gas pressure, flow, calorific value, temperature, cooperation moisture content of coal, heating gas composition, pushing coke operation plan.
3. a kind of coke oven according to claim 1 heats optimization system automatically, it is characterised in that: the fire falls monitoring system
For determining that fire falls the moment, calculates coking end time, sets time and coking time, including raw gas temperature detection device (1), data are adopted
Collection and control device (2)；
The raw gas temperature detection device (1) includes one group of thermocouple (11), one group of high temperature-resistant compensation lead (12), the heat
At the threeway that the tedge that galvanic couple (11) is set to carbonizing chamber of coke oven is connect with bridge tube, the high temperature-resistant compensation lead (12) is set to heat
Near galvanic couple (11)；
The data acquisition and control device (2) includes data acquisition module (21), data memory module (22)；
The data acquisition and processing (DAP) module (21) is used to receive the temperature data from raw gas temperature detection device (1),
Determine that fire falls the moment, coaling time information, fire of acquisition falls time information, coke pushing time information, calculate coking end time, set the time and
Coking time, and temperature data, time information of coalingging, fire fallen into time information, coke pushing time information, coking end time, sets the time
Data memory module (22) are sent to coking time；
Data memory module (22) is for storing the temperature data from data acquisition and processing (DAP) module (21), coalingging and believe constantly
Breath, fire fall time information, coke pushing time information, coking end time, set time and coking time.
4. a kind of coke oven according to claim 3 heats optimization system automatically, it is characterised in that: the thermocouple (11) is
The armoured K-thermocouple of resistance to raw coke oven gas corrosion.
5. a kind of coke oven according to claim 3 heats optimization system automatically, it is characterised in that: the high temperature resistant compensation is led
Line (12) is externally provided with ceramic fibre thermal insulation layer.
6. a kind of coke oven according to claim 3 heats optimization system automatically, it is characterised in that: the thermocouple (11) and
High temperature-resistant compensation lead (12) is arranged in pairs.
7. a kind of coke oven according to claim 3 heats optimization system automatically, it is characterised in that: the data acquisition and place
When managing module (21) work:
Determine the method that fire falls the moment are as follows: determine according to the temperature data of thermocouple (11) in each carbonizing chamber, temperature drop point is
The moment is fallen for fire；
The calculation method of coking end time are as follows: coking end time=fire falls the moment-and coalings the moment；
Set the calculation method of time are as follows: set the time=coke pushing moment-fire falls the moment；
The calculation method of coking time are as follows: coke pushing moment-coaling the moment.
8. a kind of coke oven according to claim 1 heats optimization system automatically, it is characterised in that: pass through energy predicting mould
Type calculates the setting value of control parameter；The energy predicting model are as follows:
QIt needs=f1(G,W,V)；
QFor=f2(q,Q,t)；
T1=f3(QIt needs, QFor)；
Wherein, Q is heat, and G is coal capacity, and W is moisture content, and V is fugitive constituent, and q is calorific value of gas, and Q is gas flow, t fire fall for
Fire falls moment, T1For the coarse adjustment temperature that feedovers.
9. a kind of coke oven according to claim 1 heats optimization system automatically, it is characterised in that: pass through Fuzzy Control molding
Type calculates the setting value of control parameter；The fuzzy control model are as follows:
T2=f4(tFire is fallen, tStraight trip, OO2)；
Wherein, tFire is fallenMoment, t are fallen for fireStraight tripFire when for standard mean flue temperature falls moment, OO2For flue gas oxygen content, T2For rear feed
Accurate adjustment temperature.
10. a kind of coke oven according to claim 1 heats optimization system automatically, it is characterised in that: the mean flue temperature inspection
Examining system is for detecting coke oven mean flue temperature；The exhaust gas measurement of oxygen content system is for detecting coke oven combustion exhaust gas oxygen content.
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Cited By (6)
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| CN110205147A (en) * | 2019-06-14 | 2019-09-06 | 湖南千盟智能信息技术有限公司 | Coke oven heating coal gas single tube intelligence control system |
| CN110597207A (en) * | 2019-09-18 | 2019-12-20 | 中冶赛迪重庆信息技术有限公司 | Coking operation action amount identification method and system and computer readable storage medium |
| CN110951495A (en) * | 2019-11-11 | 2020-04-03 | 唐山中润煤化工有限公司 | Method, system, medium and equipment for controlling coke quality in whole coking process |
| CN111651898A (en) * | 2020-02-18 | 2020-09-11 | 南京沪友冶金机械制造有限公司 | Automatic adjusting method for temperature of coke oven |
| CN112480951A (en) * | 2020-07-09 | 2021-03-12 | 大连市昊通环保工程技术有限公司 | Unsteady state, low NOxCoke oven heating gas feed-forward adjusting method and coke oven |
| CN115074141A (en) * | 2022-06-17 | 2022-09-20 | 鞍山华泰环能工程技术有限公司 | Method and device for controlling combustion degree of heat recovery coke oven and coke oven system |
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| CN110205147A (en) * | 2019-06-14 | 2019-09-06 | 湖南千盟智能信息技术有限公司 | Coke oven heating coal gas single tube intelligence control system |
| CN110597207A (en) * | 2019-09-18 | 2019-12-20 | 中冶赛迪重庆信息技术有限公司 | Coking operation action amount identification method and system and computer readable storage medium |
| CN110951495A (en) * | 2019-11-11 | 2020-04-03 | 唐山中润煤化工有限公司 | Method, system, medium and equipment for controlling coke quality in whole coking process |
| CN111651898A (en) * | 2020-02-18 | 2020-09-11 | 南京沪友冶金机械制造有限公司 | Automatic adjusting method for temperature of coke oven |
| CN111651898B (en) * | 2020-02-18 | 2023-12-26 | 南京沪友冶金机械制造有限公司 | Automatic adjustment method for oven temperature of coke oven |
| CN112480951A (en) * | 2020-07-09 | 2021-03-12 | 大连市昊通环保工程技术有限公司 | Unsteady state, low NOxCoke oven heating gas feed-forward adjusting method and coke oven |
| CN115074141A (en) * | 2022-06-17 | 2022-09-20 | 鞍山华泰环能工程技术有限公司 | Method and device for controlling combustion degree of heat recovery coke oven and coke oven system |
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