CN104133979B - Detecting method for smoke gas index design requirement of solid incinerator - Google Patents
Detecting method for smoke gas index design requirement of solid incinerator Download PDFInfo
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- CN104133979B CN104133979B CN201410253513.3A CN201410253513A CN104133979B CN 104133979 B CN104133979 B CN 104133979B CN 201410253513 A CN201410253513 A CN 201410253513A CN 104133979 B CN104133979 B CN 104133979B
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Abstract
The invention discloses a detecting method for the smoke gas index 850 DEG C/2S design requirement of a solid incinerator. Through the lowering speed of the temperature of a first flue, the temperature of a secondary air spray-in opening, the average temperature of the first flue, the primary air flow rate at the average temperature of the first flue and the ascending height of the smoke gas in two seconds are sequentially obtained according to formulas, and finally, the exhaust temperature of the smoke gas after the two seconds is obtained, so whether the exhaust temperature is higher than 850 DEG C or not is judged, and whether the design requirement of a smoke gas index is met or not is further judged. Therefore the detection method provided by the invention has the advantages that the simplicity and reliability are realized; the calculation process is greatly simplified; and the accuracy and the reliability of the 850 DEG C/2S data detection are improved.
Description
Technical field
A kind of a kind of the present invention relates to detection method, in particular it relates to inspection of solid incinerator fume indication design requirement
Survey method.
Background technology
In waste incineration, 850 DEG C/2S is a highly important fume indication design requirement, specifically, 850 DEG C/2S
Refer to that the temperature of the flue gas discharged when burning cannot be below 850 DEG C, the time of staying in burner hearth for the flue gas is no less than 2S.This flue gas
Index Design requires to ensure that combustible has the enough response time in burner hearth, thus after-flame as far as possible.Due to the fire in burner hearth
Flame radiation and the factor such as flue gas flow, change in flow impact, this index cannot direct detection, can only by thermodynamics public affairs
Formula, is calculated according to boiler load, and whole calculating process is complicated, and associated data is too many, leads to data accuracy relatively
Difference.
Therefore, how to provide a kind of detection method of solid incinerator fume indication design requirement, can simplify and calculate
Journey, improves the preparatory reliability of data, is the technical problem of those skilled in the art's urgent need to resolve.
Content of the invention
Introduce a series of concept of reduced forms in Summary, this will specific embodiment partly in enter
One step describes in detail.The Summary of the present invention is not meant to attempt to limit technical scheme required for protection
Key feature and essential features, more do not mean that the protection domain attempting to determine technical scheme required for protection.
In order to solve the above problems, the invention discloses a kind of detection side of solid incinerator fume indication design requirement
Method, including：
Step 1：Obtain the fall off rate DelT of the first flue temperature；
Step 2：It is calculated temperature T_h1_inlet of secondary wind entrance by described fall off rate DelT：
T_h1_inlet=T_top+DelT*H1
Wherein, T_top is the first flue head temperature, and H1 is the distance to secondary wind entrance for the first flue top；
Step 3：Calculate mean temperature T_middle of the first flue：
T_middle=(T_h1_inlet+T_top)/2；
Step 4：Calculate wind flow Q under the first flue mean temperature1：
Q1=Qprimary_air×(T_middle+273)/273；
Wherein, Qprimary_airFor the primary air flow under standard state；
Step 5：It is calculated the flue gas lifting height H_2sec of two seconds：
H_2sec=2 × Q1/S；
Wherein, S is the flue average cross-section above the first flue overfire air jet；
Step 6：It is calculated two seconds discharge temperatures T_2sec afterwards of flue gas：
T_2sec=T_h1_inlet-DelT × H_2sec；
Step 7：Judge whether described discharge temperature T_2sec is more than 850 DEG C.
Preferably, described step 1 includes：
Step 101：Obtain the temperature drop curve of the first flue during boiler design；
Step 102：According to actually detected value, described first flue temperature decline curve is repaiied during boiler operatiopn
Just；
Step 103：Obtain the fall off rate of the first flue temperature according to revised first flue temperature decline curve
DelT.
Beneficial effects of the present invention are：
The detection method of the solid incinerator fume indication design requirement that the present invention provides, by under the first flue temperature
Reduction of speed rate, tries to achieve the temperature of secondary wind entrance, the mean temperature of the first flue, the first flue mean temperature according to formula successively
Under a wind flow, the flue gas lifting height of two seconds, finally give two seconds discharge temperatures afterwards of flue gas, thus judging
Whether this discharge temperature is more than 850 DEG C, further determines whether to meet the design requirement of fume indication it is seen then that the present invention provides
Detection method, simple and reliable, greatly simplifie calculating process, improve the preparatory and reliable of 850 DEG C/2S Data Detection
Property.
Brief description
The drawings below of the embodiment of the present invention is used for understanding the present invention in this as the part of the present invention.Shown in accompanying drawing
Embodiments of the present invention and its description, for explaining the principle of the present invention.In the accompanying drawings,
The flow chart of the detection method of the solid incinerator fume indication design requirement that Fig. 1 provides for the present invention.
Specific embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And, it will be apparent to one skilled in the art that the embodiment of the present invention can one or more of these details
And be carried out.In other examples, in order to avoid obscuring with the embodiment of the present invention, for more well known in the art
Technical characteristic is not described.
In order to thoroughly understand the embodiment of the present invention, detailed structure will be proposed in following description.Obviously, the present invention is real
The execution applying example is not limited to the specific details that those skilled in the art is familiar with.Presently preferred embodiments of the present invention is retouched in detail
State as follows, but in addition to these describe in detail, the present invention can also have other embodiment.
Refer to Fig. 1, the flow process of the detection method of solid incinerator fume indication design requirement that Fig. 1 present invention provides
Figure.
The invention provides a kind of detection method of solid incinerator fume indication 850 DEG C/2S design requirement, including following
Step：
Step 1：Obtain the fall off rate DelT of the first flue temperature；
Step 2：It is calculated temperature T_h1_inlet of secondary wind entrance by described fall off rate DelT：
T_h1_inlet=T_top+DelT*H1
Wherein, T_top is the first flue head temperature, and H1 is the distance to secondary wind entrance for the first flue top；
Step 3：Calculate mean temperature T_middle of the first flue：
T_middle=(T_h1_inlet+T_top)/2；
Step 4：Calculate wind flow Q under the first flue mean temperature1：
Q1=Qprimary_air×(T_middle+273)/273；
Wherein, Qprimary_airFor the primary air flow under standard state；
Step 5：It is calculated the flue gas lifting height H_2sec of two seconds：
H_2sec=2 × Q1/S；
Wherein, S is the flue average cross-section above the first flue overfire air jet；
Step 6：It is calculated two seconds discharge temperatures T_2sec afterwards of flue gas：
T_2sec=T_h1_inlet-DelT × H_2sec；
Step 7：Judge whether described discharge temperature T_2sec is more than 850 DEG C.
Understand, represent when T_2sec >=850 DEG C the discharge temperature of flue gas meet 850 DEG C/2S of fume indication design will
Ask.It can be seen that, the detection method of the solid incinerator fume indication design requirement that the present invention provides, first pass through and obtain the first flue
The fall off rate of temperature, tries to achieve the temperature of secondary wind entrance, the mean temperature of the first flue, the first flue according to formula successively
A wind flow under mean temperature, the flue gas lifting height of two seconds, finally give two seconds discharge temperatures afterwards of flue gas,
Thus judging that whether this discharge temperature is more than 850 DEG C, further determine whether to meet the design requirement of fume indication it is seen then that this
The detection method that invention provides, simple and reliable, greatly simplifie calculating process, improve the preparation of 850 DEG C/2S Data Detection
Property and reliability.
Specifically, above-mentioned steps 1 include：
Step 101：Obtain the temperature drop curve of the first flue during boiler design；
Step 102：According to actually detected value, described first flue temperature decline curve is repaiied during boiler operatiopn
Just；
Step 103：Obtain the fall off rate of the first flue temperature according to revised first flue temperature decline curve
DelT.
For example：According to revised first flue temperature decline curve, inlet temperature T1=1050 DEG C, outlet temperature T2=
830 DEG C, apart from L=13.381m, according to formula DelT=(T1-T2)/L, being calculated fall off rate is 16.44 DEG C/m.
The present invention is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is only intended to
Citing and descriptive purpose, and be not intended to limit the invention in described scope of embodiments.In addition people in the art
Member, it is understood that the invention is not limited in above-described embodiment, can also make more kinds of according to the teachings of the present invention
Variants and modifications, within these variants and modifications all fall within scope of the present invention.
Claims (2)
1. a kind of detection method of solid incinerator fume indication design requirement is it is characterised in that include：
Step 1：Obtain the fall off rate DelT of the first flue temperature；
Step 2：It is calculated temperature T_h1_inlet of secondary wind entrance by described fall off rate DelT：
T_h1_inlet=T_top+DelT*H1
Wherein, T_top is the first flue head temperature, and H1 is the distance to secondary wind entrance for the first flue top；
Step 3：Calculate mean temperature T_middle of the first flue：
T_middle=(T_h1_inlet+T_top)/2；
Step 4：Calculate wind flow Q under the first flue mean temperature1：
Q1=Qprimary_air×(T_middle+273)/273；
Wherein, Qprimary_airFor a wind flow under standard state；
Step 5：It is calculated the flue gas lifting height H_2sec of two seconds：
H_2sec=2 × Q1/S；
Wherein, S is the flue average cross-section above the first flue overfire air jet；
Step 6：It is calculated two seconds discharge temperatures T_2sec afterwards of flue gas：
T_2sec=T_h1_inlet-DelT × H_2sec；
Step 7：Judge that whether described discharge temperature T_2sec is more than or equal to 850 DEG C, if described discharge temperature T_2sec is more than etc.
In 850 DEG C then it represents that the discharge temperature of flue gas meets the design requirement of 850 DEG C/2S of fume indication.
2. detection method according to claim 1 is it is characterised in that described step 1 includes：
Step 101：Obtain the temperature drop curve of the first flue during boiler design；
Step 102：According to actually detected value, described first flue temperature decline curve is modified during boiler operatiopn；
Step 103：Obtain the fall off rate DelT of the first flue temperature according to revised first flue temperature decline curve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410253513.3A CN104133979B (en) | 2014-06-09 | 2014-06-09 | Detecting method for smoke gas index design requirement of solid incinerator |
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| CN201410253513.3A CN104133979B (en) | 2014-06-09 | 2014-06-09 | Detecting method for smoke gas index design requirement of solid incinerator |
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| CN104133979B true CN104133979B (en) | 2017-02-15 |
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| CN106770456B (en) * | 2017-02-17 | 2019-06-14 | 西安热工研究院有限公司 | In a kind of garbage incinerator under the conditions of 850 DEG C of flue gas the residence time method for real-time measurement |
| WO2022032483A1 (en) * | 2020-08-11 | 2022-02-17 | 潮州深能环保有限公司 | Method for measuring and calculating flue gas main control temperature of first flue of garbage incinerator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515823A (en) * | 2003-01-10 | 2004-07-28 | 深圳市市政环卫综合处理厂 | Combustion process control method for domestic refuse incinerator |
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2014
- 2014-06-09 CN CN201410253513.3A patent/CN104133979B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515823A (en) * | 2003-01-10 | 2004-07-28 | 深圳市市政环卫综合处理厂 | Combustion process control method for domestic refuse incinerator |
Non-Patent Citations (3)
| Title |
|---|
| 国产化垃圾焚烧炉排炉膛选型CFD优化研究;陈涛 等;《资源节约与环保 》;20140131;第2014年卷(第1期);第48-50、54页 * |
| 垃圾焚烧850℃/2s工程算法;朱亮 等;《环境工程》;20151231;第33卷(第S1期);第589-590页 * |
| 配风对垃圾焚烧炉温度场影响的模拟研究;李龙君 等;《环境科学与技术》;20131031;第36卷(第10期);第39-42页 * |
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