CN110287642A - A method of adjusting ceramic kiln air coefficient - Google Patents
A method of adjusting ceramic kiln air coefficient Download PDFInfo
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- CN110287642A CN110287642A CN201910613543.3A CN201910613543A CN110287642A CN 110287642 A CN110287642 A CN 110287642A CN 201910613543 A CN201910613543 A CN 201910613543A CN 110287642 A CN110287642 A CN 110287642A
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- value
- air coefficient
- combustion gas
- ceramic kiln
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- 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
- F27D19/00—Arrangements of controlling devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a kind of methods for adjusting ceramic kiln air coefficient, pass through a kind of heat power engineering scheme and computation model for adjusting air coefficient of the field intelligent instrument, the database sharing that connect with ceramic kiln in fact.The present invention is that the air coefficient of ceramic kiln is adjusted to optimum value by the heat power engineering scheme and computation model of adjusting air coefficient, while so that meeting product firing process requirement, the quality and grade of product can be improved, it can realize energy-saving and emission-reduction consumption reduction to greatest extent again, the greenization of china industry is pushed to develop.
Description
Technical field
The present invention relates to ceramic processing technique field more particularly to a kind of methods for adjusting ceramic kiln air coefficient.
Background technique
Energy consumption in Production of Ceramics for firing process accounts for about 61% or so, and ceramic kiln is a kind of high energy consumption, height
The Thermal Equipment of flue gas emission reduces the unit product fuel consumption and CO of ceramic kiln2、SO2And NOxDischarge amount be pottery
Porcelain industry value chain urgent problem to be solved.The size of air coefficient is for the complete combustibility of fuel, combustion in kiln
Material consumption, ignition temperature, the thermal efficiency, exhaust gas volumn, atmosphere etc. have very important influence, and control optimum air coefficient is to protect
It demonstrate,proves product quality and realizes one of the important measures of saving energy in kiln emission reduction.
The fuel gas buring control of China's ceramic kiln is only limited to meet temperature and atmosphere requirements at present, none science
Air coefficient thermal technology regulating system and computation model, and the actual air coefficient of kiln is caused generally to be in runaway condition.Combustion gas
The desired air coefficient of completely burned should be 1.05~1.10.And domestic ceramic gas burning kiln air coefficient be generally 1.5~
1.8, some kilns are even higher.Air coefficient will cause greatly that exhaust gas volumn is big, ignition temperature is low, gas radiation ability becomes smaller, and increase
Big amount of consumed gas, and the heat that when flue gas is from kiln is taken away is more, flow velocity of the flue gas in kiln system increases, drag losses also with
Increase, the power consumption of smoke exhaust fan increases.Air coefficient is less than ideal value, and it is incomplete to will cause fuel gas buring, and causes
Combustion gas waste.Adjust optimum air coefficient, while meeting product firing process requirement, can improve product quality and
Class, and energy-saving and emission-reduction consumption reduction can be realized to greatest extent, push the greenization of china industry to develop.
Summary of the invention
The object of the present invention is to provide a kind of methods for adjusting ceramic kiln air coefficient, pass through what is connect with ceramic kiln
A kind of heat power engineering scheme and computation model for adjusting air coefficient of field intelligent instrument, database sharing.
To solve the above-mentioned problems, technical scheme is as follows:
A method of adjusting ceramic kiln air coefficient, comprising the following steps:
1) composition of combustion gas used in ceramic kiln is acquired, and establishes database in conjunction with kiln temperature；
2) concrete position of ceramic kiln piecewise acquisition thermal parameter is determined；
3) the real-time thermal parameter for needing the intelligence instrument acquisition each position of kiln, including gas flow Q are determinedf, it is combustion-supporting
Air mass flow Qa, combustion gas actual temperature tf, combustion air actual temperature ta, kiln temperature t, O in flue gas2With the volume basis of CO
Content；
4) theoretical air capacity is calculated according to the practical composition of combustion gasWith amount of theoretical flue gas V0, calculating formula are as follows:
5) air coefficient α value is determined；
6) by the volume flow Q of the temperature automatic adjustment combustion gas setf；
7) combustion air flow Q is automatically adjusted according to the α value of settinga；
8) operation test and adjusting and optimizing, according to CO% and O in the real-time flue gas of field intelligent instrument acquisition2% is examined
Whether operation result meets, and is accordingly adjusted.
Preferably, the composition of combustion gas includes CO, H in step 1)2、CH4、C2H6、C2H4、H2S、CO2、N2、O2、H2O。
Preferably, the method for determination air coefficient α value described in step 5) includes the following three types situation:
When requiring oxidizing atmosphere, according to the O of atmosphere requirements2Volumn concentration alpha value calculated, α and O2The relational expression of %
Are as follows:
When requiring reducing atmosphere, air coefficient α < 1, and require to determine α value according to the strong and weak of reducing atmosphere；
When only requiring combustion gas completely burned and without atmosphere requirements, under the premise of guaranteeing combustion gas completely burned, using most
Small α value, α value are 1.05~1.1.
Preferably, combustion air flow Q is automatically adjusted according to the α value of setting described in step 7)aAccording to following formula:
Wherein, QaUnit be m3/ h, combustion air actual temperature taUnit be DEG C, combustion gas actual temperature tfUnit be DEG C,
Combustion gas volume flow QfUnit is m3/h。
Preferably, according to CO% and O in the real-time flue gas of field intelligent instrument acquisition described in step 8)2% examines fortune
Whether row result meets following three kinds of requirements:
1. when requiring oxidizing atmosphere, CO%=0, O in flue gas2% is consistent with required value；
2. when requiring weakly reducing atmosphere, 0 < CO% < 2% in flue gas；It is required that when strongly reducing atmosphere, CO=3% in flue gas
~5%.And O2%=0；
3. when only requiring combustion gas completely burned and without atmosphere requirements, CO%=0, O in flue gas2% is minimum；
If meeting above situation, illustrate that the α value adjusted is optimum value；
If being unsatisfactory for above situation, optimization is finely adjusted to α value further according to specific actual conditions, until reaching optimum a-value.
Compared with prior art, the invention has the following advantages: the present invention provides a kind of ceramic kiln air coefficient
Regulation technology and method, including the field intelligent instrument, database, the heat power engineering for adjusting air coefficient being connect with ceramic kiln
Scheme and computation model.It is an advantage of the invention that passing through the heat power engineering scheme for adjusting air coefficient and computation model for furnace
The air coefficient of furnace is adjusted to optimum value.
Specific embodiment
The following further describes the technical solution of the present invention combined with specific embodiments below.
A method of adjusting ceramic kiln air coefficient, comprising the following steps:
1) composition of combustion gas used in ceramic kiln is acquired, and establishes database in conjunction with kiln temperature, wherein the composition of combustion gas
Including CO, H2、CH4、C2H6、C2H4、H2S、CO2、N2、O2、H2O；
2) concrete position of ceramic kiln piecewise acquisition thermal parameter is determined；
3) the real-time thermal parameter for needing the intelligence instrument acquisition each position of kiln, including gas flow Q are determinedf, it is combustion-supporting
Air mass flow QaCombustion gas actual temperature tf, combustion air actual temperature ta, kiln temperature t, O in flue gas2Contain with the volume basis of CO
Amount；
4) theoretical air capacity is calculated according to the practical composition of combustion gasWith amount of theoretical flue gas V0, calculating formula are as follows:
5) air coefficient α value is determined, the method for determining air coefficient α value includes the following three types situation:
When requiring oxidizing atmosphere, according to the O of atmosphere requirements2Volumn concentration alpha value calculated, α and O2The relational expression of %
Are as follows:
When requiring reducing atmosphere, air coefficient α < 1, and require to determine α value according to the strong and weak of reducing atmosphere；
When only requiring combustion gas completely burned and without atmosphere requirements, under the premise of guaranteeing combustion gas completely burned, using most
Small α value, α value are 1.05~1.1；
6) by the volume flow Q of the temperature automatic adjustment combustion gas setf；
7) combustion air flow Q is automatically adjusted according to the α value of settinga, according to following formula；
Wherein, QaUnit be m3/ h, combustion air actual temperature taUnit be DEG C, combustion gas actual temperature tfUnit be DEG C,
Combustion gas volume flow QfUnit is m3/h；
8) operation test and adjusting and optimizing, according to CO% and O in the real-time flue gas of field intelligent instrument acquisition2% is examined
Whether operation result meets following three kinds of requirements:
1. when requiring oxidizing atmosphere, CO%=0, O in flue gas2% is consistent with required value；
2. when requiring weakly reducing atmosphere, 0 < CO% < 2% in flue gas；It is required that when strongly reducing atmosphere, CO=3% in flue gas
~5%.And O2%=0；
3. when only requiring combustion gas completely burned and without atmosphere requirements, CO%=0, O in flue gas2% is minimum；
If meeting above situation, illustrate that the α value adjusted is optimum value；
If being unsatisfactory for above situation, optimization is finely adjusted to α value further according to specific actual conditions, until reaching optimum a-value
And it is accordingly adjusted.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；Simultaneously for those of ordinary skill in the art, foundation
Thought of the invention, has except change in specific embodiments and applications.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (7)
1. a kind of method for adjusting ceramic kiln air coefficient, which comprises the following steps:
1) composition of combustion gas used in ceramic kiln is acquired, and establishes database in conjunction with kiln temperature；
2) concrete position of ceramic kiln piecewise acquisition thermal parameter is determined；
3) the real-time thermal parameter for needing the intelligence instrument acquisition each position of kiln, including combustion gas volume flow Q are determinedf, combustion-supporting sky
Throughput Qa, combustion gas actual temperature tf, combustion air actual temperature ta, kiln temperature t, O in flue gas2Contain with the volume basis of CO
Amount；
4) theoretical air capacity is calculated according to the practical composition of combustion gasWith amount of theoretical flue gas V0, calculating formula are as follows:
5) air coefficient α value is determined；
6) by the volume flow Q of the temperature automatic adjustment combustion gas setf；
7) combustion air flow Q is automatically adjusted according to the α value of settinga；
8) operation test and adjusting and optimizing, according to CO% and O in the real-time flue gas of field intelligent instrument acquisition2% examines operation knot
Whether fruit meets, and is accordingly adjusted.
2. the method according to claim 1 for adjusting ceramic kiln air coefficient, which is characterized in that combustion gas in step 1)
Composition includes CO, H2、CH4、C2H6、C2H4、H2S、CO2、N2、O2、H2O。
3. the method according to claim 1 for adjusting ceramic kiln air coefficient, which is characterized in that step 5) is described really
The method for determining air coefficient α value includes when requiring oxidizing atmosphere, according to the O of atmosphere requirements2Volumn concentration alpha value calculated, α
With O2The relational expression of % are as follows:
4. the method according to claim 1 for adjusting ceramic kiln air coefficient, which is characterized in that step 5) is described really
The method for determining air coefficient α value includes air coefficient α < 1 when requiring reducing atmosphere, and is required according to the power of reducing atmosphere
Determine α value.
5. the method according to claim 1 for adjusting ceramic kiln air coefficient, which is characterized in that step 5) is described really
The method for determining air coefficient α value includes guaranteeing combustion gas completely burned when only requiring combustion gas completely burned when without atmosphere requirements
Under the premise of, using the smallest α value, α value is 1.05~1.1.
6. the method according to claim 1 for adjusting ceramic kiln air coefficient, which is characterized in that root described in step 7)
Combustion air flow Q is automatically adjusted according to the α value of settingaAccording to following formula:
Wherein, QaUnit be m3/ h, combustion air actual temperature taUnit be DEG C, combustion gas actual temperature tfUnit be DEG C, combustion gas
Volume flow QfUnit is m3/h。
7. the method according to claim 1 for adjusting ceramic kiln air coefficient, which is characterized in that root described in step 8)
According to CO% and O in the real-time flue gas of field intelligent instrument acquisition2%, examines whether operation result meets following three kinds of requirements:
1. when requiring oxidizing atmosphere, CO%=0, O in flue gas2% is consistent with required value；
2. when requiring weakly reducing atmosphere, 0 < CO% < 2% in flue gas；It is required that when strongly reducing atmosphere, CO=3% in flue gas~
5%.And O2%=0；
3. when only requiring combustion gas completely burned and without atmosphere requirements, CO%=0, O in flue gas2% is minimum；
If meeting above situation, illustrate that the α value adjusted is optimum value；
If being unsatisfactory for above situation, optimization is finely adjusted to α value further according to specific actual conditions, until reaching optimum a-value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910613543.3A CN110287642B (en) | 2019-07-09 | 2019-07-09 | Method for adjusting air coefficient of ceramic kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910613543.3A CN110287642B (en) | 2019-07-09 | 2019-07-09 | Method for adjusting air coefficient of ceramic kiln |
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| CN110287642A true CN110287642A (en) | 2019-09-27 |
| CN110287642B CN110287642B (en) | 2023-01-20 |
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Citations (4)
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| CN101111727A (en) * | 2005-01-28 | 2008-01-23 | （株）庆东Network | Method for maximum efficiency of non-condensing boiler |
| CN102654286A (en) * | 2012-05-18 | 2012-09-05 | 无锡龙山科技有限公司 | Intelligent dynamic combustion atmosphere controller |
| CN103062790A (en) * | 2012-12-29 | 2013-04-24 | 聚光科技(杭州)股份有限公司 | Method for controlling combustion inside heating furnace |
| CN107401923A (en) * | 2016-05-18 | 2017-11-28 | 深圳市善能科技有限公司 | Kiln burning efficiency control method |
-
2019
- 2019-07-09 CN CN201910613543.3A patent/CN110287642B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111727A (en) * | 2005-01-28 | 2008-01-23 | （株）庆东Network | Method for maximum efficiency of non-condensing boiler |
| US20090120382A1 (en) * | 2005-01-28 | 2009-05-14 | Kyungdong Network Co., Ltd. | Method for Maximum Efficiency of Non-Condensing Boiler |
| CN102654286A (en) * | 2012-05-18 | 2012-09-05 | 无锡龙山科技有限公司 | Intelligent dynamic combustion atmosphere controller |
| CN103062790A (en) * | 2012-12-29 | 2013-04-24 | 聚光科技(杭州)股份有限公司 | Method for controlling combustion inside heating furnace |
| CN107401923A (en) * | 2016-05-18 | 2017-11-28 | 深圳市善能科技有限公司 | Kiln burning efficiency control method |
Non-Patent Citations (3)
| Title |
|---|
| 江海东: "《燃烧实验与陶瓷窑炉过剩空气系数检测数据分析》", 《节能与环保》 * |
| 陈进: "《陶瓷窑炉热效率在线自寻最优控制方法》", 《佛山陶瓷》 * |
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