CN117146294A - Boiler combustion control method based on coal quality detection - Google Patents
Boiler combustion control method based on coal quality detection Download PDFInfo
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- CN117146294A CN117146294A CN202310975208.4A CN202310975208A CN117146294A CN 117146294 A CN117146294 A CN 117146294A CN 202310975208 A CN202310975208 A CN 202310975208A CN 117146294 A CN117146294 A CN 117146294A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 76
- 239000003245 coal Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000012937 correction Methods 0.000 claims abstract description 141
- 239000000446 fuel Substances 0.000 claims abstract description 78
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 18
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- 229910052739 hydrogen Inorganic materials 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
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- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2221/00—Pretreatment or prehandling
- F23N2221/10—Analysing fuel properties, e.g. density, calorific
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The application relates to the technical field of boilers, in particular to a boiler combustion control method based on coal quality detection, which comprises the following steps: acquiring real-time historical combustion data of the boiler in a preset historical time period; establishing a historical fuel-steam relation curve and a historical fuel-steam pressure relation curve according to historical combustion data of the boiler; acquiring real-time combustion data and coal quality data of a boiler; determining an initial correction coefficient of the fuel quantity according to the real-time combustion data of the boiler; acquiring coal quality data of boiler combustion; and adjusting the initial correction coefficient according to the coal quality data to obtain a final correction coefficient, so as to adjust the real-time combustion quantity according to the final correction coefficient. According to the application, the real-time fuel quantity is dynamically adjusted in real time through the coal, so that the working intensity and difficulty of workers are reduced, meanwhile, unstable combustion of the boiler caused by errors caused by adjusting the fuel according to the experience of the workers is avoided, the stability of the combustion efficiency of the boiler is ensured, and the production efficiency is further improved.
Description
Technical Field
The application relates to the technical field of boilers, in particular to a boiler combustion control method based on coal quality detection.
Background
With the development of technology, the coal-fired power plant generator set enters a supercritical era, and the power plant generator set is a main machine system or an auxiliary machine system, and has quite high performance and power plant management, and the potential of synergy, energy conservation and emission reduction is basically developed. However, there is room for improvement in fuel cost reduction and efficiency improvement, and great economic benefits can be improved by improving fuel management through advanced technology or equipment.
The combustion characteristics, slagging characteristics and the like of different coal types have larger differences, and when the coal types are changed, boiler operators can know whether the coal to be charged is changed in time or even in advance, so that the boiler operation adjustment has important value.
Therefore, the application provides a boiler combustion control method based on coal quality detection, which mainly aims at solving the problem of how to adjust and control boiler combustion according to coal quality conditions so as to ensure the combustion efficiency of the boiler.
Disclosure of Invention
In view of this, the application provides a boiler combustion control method based on coal quality detection, which mainly aims to solve the problem of how to adjust and control boiler combustion according to coal quality conditions so as to ensure the combustion efficiency of the boiler.
In one aspect, the application provides a boiler combustion control method based on coal quality detection, which comprises the following steps:
acquiring real-time boiler historical combustion data in a preset historical time period, wherein the boiler historical combustion data comprises: a historical steam amount, a historical steam pressure, and a historical fuel amount;
establishing a historical fuel-steam relation curve of the historical fuel quantity and the historical steam quantity and a historical fuel-steam pressure relation curve of the historical fuel quantity and the historical steam pressure according to the historical combustion data of the boiler;
acquiring boiler real-time combustion data and coal quality data, wherein the boiler real-time combustion data comprises: real-time steam volume, real-time steam pressure, and real-time fuel volume;
determining an initial correction coefficient of the fuel quantity according to the real-time combustion data of the boiler;
acquiring the coal quality data of boiler combustion, wherein the coal quality data comprises the following steps: heating value, volatile content, fixed carbon content, hydrogen content ash value and moisture value;
and adjusting the initial correction coefficient according to the coal quality data to obtain a final correction coefficient, so as to adjust the real-time combustion quantity according to the final correction coefficient.
In some embodiments of the present application, when determining an initial correction factor for a fuel quantity based on boiler real-time combustion data, the method comprises:
acquiring a real-time steam quantity A0, and substituting the real-time steam quantity A0 into a historical fuel-steam relation curve to obtain a first historical fuel quantity;
acquiring a real-time steam pressure B0, and substituting the real-time steam pressure B0 into a historical fuel-steam pressure relation curve to obtain a second historical fuel quantity;
and calculating the average value of the first historical fuel quantity and the second historical fuel quantity to obtain the historical average fuel quantity C.
In some embodiments of the present application, after obtaining the historical average fuel quantity C, further comprising:
acquiring a real-time fuel quantity D0;
calculating the difference between the real-time fuel quantity D0 and the historical average fuel quantity C to obtain a fuel quantity difference E, wherein E=D0-C;
presetting a first preset deviation fuel quantity E1, a second preset deviation fuel quantity E2, a third preset deviation fuel quantity E3 and a fourth preset deviation fuel quantity E4, wherein E1 is more than E2 and more than 0 is more than E3 and more than E4; presetting a first preset initial correction coefficient e1, a second preset initial correction coefficient e2, a third preset initial correction coefficient e3 and a fourth preset initial correction coefficient e4, wherein e1 is more than 0.9 and less than e2 and less than 1 and e3 and less than e4 and less than 1.1;
when E is more than or equal to E1, selecting a first preset initial correction coefficient E1 as an initial correction coefficient;
when E1 is more than E2, selecting a second preset initial correction coefficient E2 as an initial correction coefficient;
when E2 is more than E3, selecting a third preset initial correction coefficient E3 as an initial correction coefficient;
when E3 is more than E4, a fourth preset initial correction coefficient E4 is selected as the initial correction coefficient.
In some embodiments of the present application, after selecting the i-th preset initial correction coefficient e i as the initial correction coefficient, i=1, 2,3,4, further comprising:
presetting a positive influence coefficient H0, wherein H0 = 1;
obtaining volatile component content L0;
presetting first preset volatile content data L1, second preset volatile content data L2, third preset volatile content data L3 and fourth preset volatile content data L4, wherein L1 is more than L2 and more than L3 is more than L4; presetting a first preset adjustment coefficient l1, a second preset adjustment coefficient l2, a third preset adjustment coefficient l3 and a fourth preset adjustment coefficient l4, wherein 1.1 is more than 1 and more than 2, and 1 is more than 1 and more than 3 and more than 4 and more than 0.9;
when L0 is more than or equal to L1, a first preset adjustment coefficient L1 is selected to adjust the positive influence coefficient H0 once, and the positive influence coefficient after the primary adjustment is H0 x L1;
when L1 is more than L0 and is more than or equal to L2, selecting a second preset adjustment coefficient L2 to adjust the positive influence coefficient H0 once, wherein the positive influence coefficient after one adjustment is H0 x L2;
when L2 is more than L0 and is more than or equal to L3, selecting a third preset adjustment coefficient L3 to adjust the positive influence coefficient H0 once, wherein the positive influence coefficient after one adjustment is H0 x L3;
when L3 is more than L0 and is more than or equal to L4, the fourth preset adjustment coefficient L4 is selected to adjust the positive influence coefficient H0 once, and the positive influence coefficient after one adjustment is H0L 4.
In some embodiments of the present application, after the i-th preset adjustment coefficient l i is selected to perform a primary adjustment on the positive influence coefficient H0, i=1, 2,3,4, and the obtained primary adjusted positive influence coefficient is H0 x l i, the method further includes:
obtaining fixed carbon content F0 of coal quality fed into a furnace;
presetting a first preset fixed carbon content F1, a second preset fixed carbon content F2, a third preset fixed carbon content F3 and a fourth preset fixed carbon content F4, wherein F1 is more than F2 is more than F3 is more than F4; presetting a first preset adjustment coefficient f1, a second preset adjustment coefficient f2, a third preset adjustment coefficient f3 and a fourth preset adjustment coefficient f4, wherein 1.1 is more than 1, f2 is more than 1, f3 is more than 4, and more than 0.9;
when F0 is more than or equal to F1, selecting a first preset adjustment coefficient F1 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F1;
when F1 is more than F0 and is more than or equal to F2, selecting a second preset adjustment coefficient F2 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F2;
when F2 is more than F0 and is more than or equal to F3, selecting a third preset adjustment coefficient F3 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F3;
when F3 is greater than F0 and equal to or greater than F4, selecting a fourth preset adjustment coefficient F4 to perform secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F4.
In some embodiments of the present application, after selecting the i-th preset adjustment coefficient f i to perform secondary adjustment on the once-adjusted positive impact coefficient H0 x l i, i=1, 2,3,4, to obtain the secondary adjusted positive impact coefficient H0 x l i x f i, the method further includes:
obtaining the hydrogen content K0 of the coal entering the furnace;
presetting a first preset hydrogen content K1, a second preset hydrogen content K2, a third preset hydrogen content K3 and a fourth preset hydrogen content K4, wherein K1 is more than K2 and more than K3 is more than K4; presetting a first preset adjustment coefficient k1, a second preset adjustment coefficient k2, a third preset adjustment coefficient k3 and a fourth preset adjustment coefficient k4, wherein 1.1 is more than k1 and more than k2 is more than 1 and more than k3 is more than k4 and more than 0.9;
when K0 is more than or equal to K1, selecting a first preset adjustment coefficient K1 to perform three times of adjustment on the forward direction influence coefficient H0 x l i x f i after the secondary adjustment, wherein the forward direction influence coefficient H0 x l i x f i x K1 after the three times of adjustment;
when K1 is more than K0 and is more than or equal to K2, selecting a second preset adjustment coefficient K2 to perform three times of adjustment on the forward influence coefficient H0 x l i x f i after the secondary adjustment, wherein the forward influence coefficient H0 x l i x f i x K2 after the three times of adjustment;
when K2 is more than K0 and is more than or equal to K3, a third preset adjustment coefficient K3 is selected to adjust the forward influence coefficient H0 x l i x f i after secondary adjustment for three times, wherein the forward influence coefficient H0 x l i x f i x K3 after the three times of adjustment;
when K3 is more than K0 and is more than or equal to K4, selecting a fourth preset adjustment coefficient K4 to perform three times of adjustment on the forward influence coefficient H0 x l i x f i after the secondary adjustment, wherein the forward influence coefficient H0 x l i x f i x K4 after the three times of adjustment;
after the i-th preset adjustment coefficient ki is selected to perform three times of adjustment on the forward influence coefficient H0 x l i x f i after the two times of adjustment, i=1, 2,3,4, and the forward influence coefficient H0 x l i x f i x ki after the three times of adjustment is obtained, the forward influence coefficient H0 x l i x f i x k i after the three times of adjustment is taken as the final forward influence coefficient Ha.
In some embodiments of the present application, after taking the positive influence coefficient H0 x l i x f i x ki after three adjustments as the final positive influence coefficient Ha, the method further includes:
presetting a negative influence coefficient T0, wherein T0=1;
acquiring an ash value M0 of coal quality entering a furnace;
presetting a first preset ash value M1, a second preset ash value M2, a third preset ash value M3 and a fourth preset ash value M4, wherein M1 is more than M2 and more than M3 is more than M4; presetting a first preset adjustment coefficient m1, a second preset adjustment coefficient m2, a third preset adjustment coefficient m3 and a fourth preset adjustment coefficient m4, wherein m1 is more than 0.9 and less than m2 and more than 1 and less than m3 and less than m4 and less than 1.1;
when M0 is more than or equal to M1, selecting a first preset adjustment coefficient M1 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0 x M1;
when M1 is more than M0 and is more than or equal to M2, selecting a second preset adjustment coefficient M2 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0M 2;
when M2 is more than M0 and is more than or equal to M3, selecting a third preset adjustment coefficient M3 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0M 3;
when M3 is more than M0 and is more than or equal to M4, a fourth preset adjustment coefficient M4 is selected to adjust the negative influence coefficient T0 once, and the negative influence coefficient after one adjustment is T0 x M4.
In some embodiments of the present application, after the i-th preset adjustment coefficient mi is selected to perform one adjustment on the negative impact coefficient T0, i=1, 2,3,4, and the negative impact coefficient after one adjustment is obtained as t0×mi, the method further includes:
acquiring a water value N0 of coal quality entering a furnace;
presetting a first preset moisture value N1, a second preset moisture value N2, a third preset moisture value N1 and a fourth preset moisture value N4, wherein N1 is more than N2 and N3 is more than N4; presetting a first preset adjustment coefficient n1, a second preset adjustment coefficient n2, a third preset adjustment coefficient n3 and a fourth preset adjustment coefficient n4, wherein n1 is more than 0.9 and less than n2 and more than 1 and less than n3 and less than n4 and less than 1.1;
when N0 is more than or equal to N1, selecting a first preset adjustment coefficient N1 to carry out secondary adjustment on the negatively-adjusted influence coefficient T0 x mi, wherein the negatively-adjusted influence coefficient T0 x mi after secondary adjustment is T0 x N1;
when N1 is more than N0 and is more than or equal to N2, selecting a second preset adjustment coefficient N2 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi after secondary adjustment is N2;
when N2 is more than N0 and is more than or equal to N3, selecting a third preset adjustment coefficient N3 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi after secondary adjustment is N3;
when N3 is more than N0 and is more than or equal to N4, selecting a fourth preset adjustment coefficient N4 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi N4 after secondary adjustment;
after the i-th preset adjustment coefficient n i is selected to perform secondary adjustment on the negative impact coefficient T0 x mi after primary adjustment, i=1, 2,3,4, and the negative impact coefficient after secondary adjustment is obtained to be T0 x mi n i, the negative impact coefficient after secondary adjustment is T0 x mi n i, which is called the final negative impact coefficient Ta.
In some embodiments of the present application, after taking the negative influence coefficient after the secondary adjustment as T0 x n i as the final negative influence coefficient Ta, the method further includes:
acquiring a heat value S0 of coal quality entering a furnace;
adjusting the heat value S0 of the coal quality entering the furnace according to the final positive influence coefficient Ha and the final negative influence coefficient Ta to obtain an adjusted heat value S0 Ta Ha;
presetting a first preset heat value S1, a second preset heat value S2, a third preset heat value S3 and a fourth preset heat value S4, wherein S1 is more than S2 and more than S3 is more than S4; presetting a first preset correction coefficient s1, a second preset correction coefficient s2, a third preset correction coefficient s3 and a fourth preset correction coefficient s4, wherein 1.1 is more than s1 and more than s2 is more than 1 and more than s3 and more than s4 is more than 0.9;
when S0 Ta Ha is greater than or equal to S1, selecting a first preset correction coefficient S1 to correct the initial correction coefficient e i, wherein the corrected initial correction coefficient is e i S1;
when S1 is more than S0, ta is more than or equal to S2, selecting a second preset correction coefficient S2 to correct the initial correction coefficient e i, wherein the initial correction coefficient after correction is e i;
when S2 is more than S0, ta, ha is more than or equal to S3, selecting a third preset correction coefficient S3 to correct the initial correction coefficient e i, wherein the initial correction coefficient after correction is e i, ha is more than or equal to S3;
when S3 is more than S0, ta is more than or equal to S4, a fourth preset correction coefficient S4 is selected to correct the initial correction coefficient e i, and the corrected initial correction coefficient is e i, S4;
after the i-th preset correction coefficient s i is selected to correct the initial correction coefficient e i, i=1, 2,3,4, and the corrected initial correction coefficient is e i × s i, the corrected initial correction coefficient e i × s i is used as the final correction coefficient ea, and the real-time combustion amount D0 is adjusted according to the final correction coefficient ea, so as to obtain the adjusted real-time combustion amount D0×ea.
Compared with the prior art, the application has the following beneficial effects: according to the method, firstly, the historical combustion data of the boiler are obtained, a historical fuel-steam pressure relation curve and a historical fuel-steam relation curve are established according to the historical combustion data of the boiler, the real-time combustion data of the boiler and coal quality data are obtained, the historical fuel-steam relation curve and the historical fuel-steam pressure relation curve are substituted according to the real-time steam quantity and the real-time steam pressure in the real-time combustion data of the boiler, a corresponding preset initial correction coefficient is obtained and selected according to the corresponding first historical fuel quantity and second historical fuel quantity to serve as the initial correction coefficient, then the initial correction coefficient is adjusted through the coal quality data to obtain a final correction coefficient, the real-time fuel quantity is corrected according to the final correction coefficient, so that the real-time dynamic adjustment of the fuel quantity according to the coal quality data is realized, the working strength and difficulty of workers are reduced, meanwhile, the unstable combustion of the boiler caused by errors caused by the adjustment of fuel according to the experience of the workers are avoided, the stability of the combustion efficiency of the boiler is guaranteed, and the production efficiency is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. In the drawings:
fig. 1 is a flowchart of a boiler combustion control method based on coal quality detection according to an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, the embodiment provides a boiler combustion control method based on coal quality detection, which includes:
s101: acquiring real-time historical combustion data of the boiler in a preset historical time period;
the boiler historical combustion data includes: a historical steam amount, a historical steam pressure, and a historical fuel amount;
s102: establishing a historical fuel-steam relation curve and a historical fuel-steam pressure relation curve according to historical combustion data of the boiler;
s103: acquiring boiler real-time combustion data and coal quality data, wherein the boiler real-time combustion data comprises: real-time steam volume, real-time steam pressure, and real-time fuel volume;
s104: determining an initial correction coefficient of the fuel quantity according to the real-time combustion data of the boiler;
s105: acquiring coal quality data of boiler combustion;
the coal quality data of the furnace comprises: heating value, volatile content, fixed carbon content, hydrogen content ash value and moisture value;
s106: and adjusting the initial correction coefficient according to the coal quality data to obtain a final correction coefficient, so as to adjust the real-time combustion quantity according to the final correction coefficient.
It can be understood that in this embodiment, the initial correction coefficient of the fuel quantity is determined by acquiring and according to the historical combustion data of the boiler and the real-time combustion data of the boiler, then the initial correction coefficient is acquired and adjusted according to the coal quality data of the entering boiler to obtain the final correction coefficient, and the fuel quantity is adjusted according to the final correction coefficient, so that the fuel quantity is adjusted according to the coal quality condition, and the stability of the combustion efficiency of the boiler is ensured.
In one embodiment of the present application, when determining an initial correction factor for fuel quantity based on boiler real-time combustion data, the method comprises:
acquiring a real-time steam quantity A0, and substituting the real-time steam quantity A0 into a historical fuel-steam relation curve to obtain a first historical fuel quantity;
acquiring a real-time steam pressure B0, and substituting the real-time steam pressure B0 into a historical fuel-steam pressure relation curve to obtain a second historical fuel quantity;
and calculating the average value of the first historical fuel quantity and the second historical fuel quantity to obtain the historical average fuel quantity C.
In one embodiment of the present application, after obtaining the historical average fuel quantity C, it further comprises:
acquiring a real-time fuel quantity D0;
calculating the difference between the real-time fuel quantity D0 and the historical average fuel quantity C to obtain a fuel quantity difference E, wherein E=D0-C;
presetting a first preset deviation fuel quantity E1, a second preset deviation fuel quantity E2, a third preset deviation fuel quantity E3 and a fourth preset deviation fuel quantity E4, wherein E1 is more than E2 and more than 0 is more than E3 and more than E4; presetting a first preset initial correction coefficient e1, a second preset initial correction coefficient e2, a third preset initial correction coefficient e3 and a fourth preset initial correction coefficient e4, wherein e1 is more than 0.9 and less than e2 and less than 1 and e3 and less than e4 and less than 1.1;
when E is more than or equal to E1, selecting a first preset initial correction coefficient E1 as an initial correction coefficient;
when E1 is more than E2, selecting a second preset initial correction coefficient E2 as an initial correction coefficient;
when E2 is more than E3, selecting a third preset initial correction coefficient E3 as an initial correction coefficient;
when E3 is more than E4, a fourth preset initial correction coefficient E4 is selected as the initial correction coefficient.
It can be understood that in this embodiment, according to the historical fuel-steam relationship curve and the historical fuel-steam pressure relationship curve, the corresponding first historical fuel amount and second historical fuel amount are obtained, and the corresponding initial correction coefficient is selected according to the relationship between the first historical fuel amount, the second historical fuel amount and the real-time fuel amount, so that the fuel amount and the historical combustion condition are kept stable.
In a specific embodiment of the present application, after selecting the i-th preset initial correction coefficient e i as the initial correction coefficient, i=1, 2,3,4, further includes:
presetting a positive influence coefficient H0, wherein H0 = 1;
obtaining volatile component content L0;
presetting first preset volatile content data L1, second preset volatile content data L2, third preset volatile content data L3 and fourth preset volatile content data L4, wherein L1 is more than L2 and more than L3 is more than L4; presetting a first preset adjustment coefficient l1, a second preset adjustment coefficient l2, a third preset adjustment coefficient l3 and a fourth preset adjustment coefficient l4, wherein 1.3 is more than 1 and more than l2 is more than 1 and more than l4 is more than 0.9;
when L0 is more than or equal to L1, a first preset adjustment coefficient L1 is selected to adjust the positive influence coefficient H0 once, and the positive influence coefficient after the primary adjustment is H0 x L1;
when L1 is more than L0 and is more than or equal to L2, selecting a second preset adjustment coefficient L2 to adjust the positive influence coefficient H0 once, wherein the positive influence coefficient after one adjustment is H0 x L2;
when L2 is more than L0 and is more than or equal to L3, selecting a third preset adjustment coefficient L3 to adjust the positive influence coefficient H0 once, wherein the positive influence coefficient after one adjustment is H0 x L3;
when L3 is more than L0 and is more than or equal to L4, the fourth preset adjustment coefficient L4 is selected to adjust the positive influence coefficient H0 once, and the positive influence coefficient after one adjustment is H0L 4.
In a specific embodiment of the present application, after the i-th preset adjustment coefficient l i is selected to perform a primary adjustment on the positive influence coefficient H0, i=1, 2,3,4, and the obtained primary adjusted positive influence coefficient is H0 x l i, the method further includes:
obtaining fixed carbon content F0 of coal quality fed into a furnace;
presetting a first preset fixed carbon content F1, a second preset fixed carbon content F2, a third preset fixed carbon content F3 and a fourth preset fixed carbon content F4, wherein F1 is more than F2 is more than F3 is more than F4; presetting a first preset adjustment coefficient f1, a second preset adjustment coefficient f2, a third preset adjustment coefficient f3 and a fourth preset adjustment coefficient f4, wherein 1.3 is more than f1 and more than f2 is more than f3 and more than 1 and more than f4 is more than 0.9;
when F0 is more than or equal to F1, selecting a first preset adjustment coefficient F1 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F1;
when F1 is more than F0 and is more than or equal to F2, selecting a second preset adjustment coefficient F2 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F2;
when F2 is more than F0 and is more than or equal to F3, selecting a third preset adjustment coefficient F3 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F3;
when F3 is greater than F0 and equal to or greater than F4, selecting a fourth preset adjustment coefficient F4 to perform secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F4.
In a specific embodiment of the present application, after selecting the i-th preset adjustment coefficient f i to perform secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, i=1, 2,3,4, and obtaining the secondary adjusted positive influence coefficient H0 x l i x f i, the method further includes:
obtaining the hydrogen content K0 of the coal entering the furnace;
presetting a first preset hydrogen content K1, a second preset hydrogen content K2, a third preset hydrogen content K3 and a fourth preset hydrogen content K4, wherein K1 is more than K2 and more than K3 is more than K4; presetting a first preset adjustment coefficient k1, a second preset adjustment coefficient k2, a third preset adjustment coefficient k3 and a fourth preset adjustment coefficient k4, wherein 1.3 is more than k1 and more than k2 is more than k3 and more than 1 and more than k4 is more than 0.9;
when K0 is more than or equal to K1, selecting a first preset adjustment coefficient K1 to perform three times of adjustment on the forward direction influence coefficient H0 x l i x f i after the secondary adjustment, wherein the forward direction influence coefficient H0 x l i x f i x K1 after the three times of adjustment;
when K1 is more than K0 and is more than or equal to K2, selecting a second preset adjustment coefficient K2 to perform three times of adjustment on the forward influence coefficient H0 x l i x f i after the secondary adjustment, wherein the forward influence coefficient H0 x l i x f i x K2 after the three times of adjustment;
when K2 is more than K0 and is more than or equal to K3, a third preset adjustment coefficient K3 is selected to adjust the forward influence coefficient H0 x l i x f i after secondary adjustment for three times, wherein the forward influence coefficient H0 x l i x f i x K3 after the three times of adjustment;
when K3 is more than K0 and is more than or equal to K4, selecting a fourth preset adjustment coefficient K4 to perform three times of adjustment on the forward influence coefficient H0 x l i x f i after the secondary adjustment, wherein the forward influence coefficient H0 x l i x f i x K4 after the three times of adjustment;
after the i-th preset adjustment coefficient ki is selected to perform three times of adjustment on the forward influence coefficient H0 x l i x f i after the two times of adjustment, i=1, 2,3,4, and the forward influence coefficient H0 x l i x f i x ki after the three times of adjustment is obtained, the forward influence coefficient H0 x l i x f i x k i after the three times of adjustment is taken as the final forward influence coefficient Ha.
It can be understood that in this embodiment, by acquiring the coal quality data of the furnace, different components in the coal quality of the furnace have different effects on the heat productivity, the influence factor with the effect of improving the heat productivity is taken as the forward factor, the corresponding adjustment coefficient is selected according to the factor of the coal quality data on the heat productivity to adjust the forward influence coefficient, and the final forward influence coefficient is determined.
In a specific embodiment of the present application, after taking the positive impact coefficient H0 x l i x f i x ki after three adjustments as the final positive impact coefficient Ha, the method further includes:
presetting a negative influence coefficient T0, wherein T0=1;
acquiring an ash value M0 of coal quality entering a furnace;
presetting a first preset ash value M1, a second preset ash value M2, a third preset ash value M3 and a fourth preset ash value M4, wherein M1 is more than M2 and more than M3 is more than M4; presetting a first preset adjustment coefficient m1, a second preset adjustment coefficient m2, a third preset adjustment coefficient m3 and a fourth preset adjustment coefficient m4, wherein m1 is more than 0.7 and less than m2, m3 is more than 0 and less than 1 and less than 1.1;
when M0 is more than or equal to M1, selecting a first preset adjustment coefficient M1 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0 x M1;
when M1 is more than M0 and is more than or equal to M2, selecting a second preset adjustment coefficient M2 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0M 2;
when M2 is more than M0 and is more than or equal to M3, selecting a third preset adjustment coefficient M3 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0M 3;
when M3 is more than M0 and is more than or equal to M4, a fourth preset adjustment coefficient M4 is selected to adjust the negative influence coefficient T0 once, and the negative influence coefficient after one adjustment is T0 x M4.
In a specific embodiment of the present application, after the i-th preset adjustment coefficient mi is selected to perform one adjustment on the negative impact coefficient T0, i=1, 2,3,4, and the negative impact coefficient after one adjustment is obtained as t0×mi, the method further includes:
acquiring a water value N0 of coal quality entering a furnace;
presetting a first preset moisture value N1, a second preset moisture value N2, a third preset moisture value N1 and a fourth preset moisture value N4, wherein N1 is more than N2 and N3 is more than N4; presetting a first preset adjustment coefficient n1, a second preset adjustment coefficient n2, a third preset adjustment coefficient n3 and a fourth preset adjustment coefficient n4, wherein n1 is more than 0.7 and less than n2 and n3 is more than 1 and less than n4 is more than 1.1;
when N0 is more than or equal to N1, selecting a first preset adjustment coefficient N1 to carry out secondary adjustment on the negatively-adjusted influence coefficient T0 x mi, wherein the negatively-adjusted influence coefficient T0 x mi after secondary adjustment is T0 x N1;
when N1 is more than N0 and is more than or equal to N2, selecting a second preset adjustment coefficient N2 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi after secondary adjustment is N2;
when N2 is more than N0 and is more than or equal to N3, selecting a third preset adjustment coefficient N3 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi after secondary adjustment is N3;
when N3 is more than N0 and is more than or equal to N4, selecting a fourth preset adjustment coefficient N4 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi N4 after secondary adjustment;
after the i-th preset adjustment coefficient n i is selected to perform secondary adjustment on the negative impact coefficient T0 x mi after primary adjustment, i=1, 2,3,4, and the negative impact coefficient after secondary adjustment is obtained to be T0 x mi n i, the negative impact coefficient after secondary adjustment is T0 x mi n i, which is called the final negative impact coefficient Ta.
It can be understood that in this embodiment, the influencing factor with the effect of inhibiting the heat productivity is taken as the negative factor, and the negative influencing factor is adjusted by selecting the corresponding adjusting coefficient according to the factor that the coal quality data negatively influences the heat productivity, so as to determine the final negative influencing coefficient.
In a specific embodiment of the present application, after taking the negative influence coefficient after the secondary adjustment as T0 x mi x n i as the final negative influence coefficient Ta, the method further includes:
acquiring a heat value S0 of coal quality entering a furnace;
adjusting the heat value S0 of the coal quality entering the furnace according to the final positive influence coefficient Ha and the final negative influence coefficient Ta to obtain an adjusted heat value S0 Ta Ha;
presetting a first preset heat value S1, a second preset heat value S2, a third preset heat value S3 and a fourth preset heat value S4, wherein S1 is more than S2 and more than S3 is more than S4; presetting a first preset correction coefficient s1, a second preset correction coefficient s2, a third preset correction coefficient s3 and a fourth preset correction coefficient s4, wherein 1.1 is more than s1 and more than s2 is more than 1 and more than s3 and more than s4 is more than 0.9;
when S0 Ta Ha is greater than or equal to S1, selecting a first preset correction coefficient S1 to correct the initial correction coefficient e i, wherein the corrected initial correction coefficient is e i S1;
when S1 is more than S0, ta is more than or equal to S2, selecting a second preset correction coefficient S2 to correct the initial correction coefficient e i, wherein the initial correction coefficient after correction is e i;
when S2 is more than S0, ta, ha is more than or equal to S3, selecting a third preset correction coefficient S3 to correct the initial correction coefficient e i, wherein the initial correction coefficient after correction is e i, ha is more than or equal to S3;
when S3 is more than S0, ta is more than or equal to S4, a fourth preset correction coefficient S4 is selected to correct the initial correction coefficient e i, and the corrected initial correction coefficient is e i, S4;
after the i-th preset correction coefficient s i is selected to correct the initial correction coefficient e i, i=1, 2,3,4, and the corrected initial correction coefficient is e i × s i, the corrected initial correction coefficient e i × s i is used as the final correction coefficient ea, and the real-time combustion amount D0 is adjusted according to the final correction coefficient ea, so as to obtain the adjusted real-time combustion amount D0×ea.
It can be understood that in this embodiment, the combustion amount is adjusted according to the heat value data of the adjusted coal quality, so as to dynamically adjust the fuel amount in real time according to the coal quality adjustment, so as to ensure the stable combustion of the boiler.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the application without departing from the spirit and scope of the application, which is intended to be covered by the claims.
Claims (9)
1. The boiler combustion control method based on coal quality detection is characterized by comprising the following steps of:
acquiring real-time boiler historical combustion data in a preset historical time period, wherein the boiler historical combustion data comprises: a historical steam amount, a historical steam pressure, and a historical fuel amount;
establishing a historical fuel-steam relation curve of the historical fuel quantity and the historical steam quantity and a historical fuel-steam pressure relation curve of the historical fuel quantity and the historical steam pressure according to the historical combustion data of the boiler;
acquiring boiler real-time combustion data and coal quality data, wherein the boiler real-time combustion data comprises: real-time steam volume, real-time steam pressure, and real-time fuel volume;
determining an initial correction coefficient of the fuel quantity according to the real-time combustion data of the boiler;
acquiring the coal quality data of boiler combustion, wherein the coal quality data comprises the following steps: heating value, volatile content, fixed carbon content, hydrogen content ash value and moisture value;
and adjusting the initial correction coefficient according to the coal quality data to obtain a final correction coefficient, so as to adjust the real-time combustion quantity according to the final correction coefficient.
2. The method for controlling combustion of a boiler based on coal quality detection according to claim 1, wherein when determining an initial correction coefficient of a fuel amount based on the boiler real-time combustion data, comprising:
acquiring a real-time steam quantity A0, and substituting the real-time steam quantity A0 into the historical fuel-steam relation curve to obtain a first historical fuel quantity;
acquiring a real-time steam pressure B0, and substituting the real-time steam pressure B0 into the historical fuel-steam pressure relation curve to obtain a second historical fuel quantity;
and calculating the average value of the first historical fuel quantity and the second historical fuel quantity to obtain a historical average fuel quantity C.
3. The method for controlling combustion in a boiler based on coal quality detection according to claim 2, further comprising, after obtaining the historical average fuel amount C:
acquiring a real-time fuel quantity D0;
calculating the difference between the real-time fuel quantity D0 and the historical average fuel quantity C to obtain a fuel quantity difference E, wherein E=D0-C;
presetting a first preset deviation fuel quantity E1, a second preset deviation fuel quantity E2, a third preset deviation fuel quantity E3 and a fourth preset deviation fuel quantity E4, wherein E1 is more than E2 and more than 0 is more than E3 and more than E4; presetting a first preset initial correction coefficient e1, a second preset initial correction coefficient e2, a third preset initial correction coefficient e3 and a fourth preset initial correction coefficient e4, wherein e1 is more than 0.9 and less than e2 and less than 1 and e3 and less than e4 and less than 1.1;
when E is more than or equal to E1, selecting a first preset initial correction coefficient E1 as the initial correction coefficient;
when E1 is more than E2, selecting a second preset initial correction coefficient E2 as the initial correction coefficient;
when E2 is more than E3, selecting a third preset initial correction coefficient E3 as the initial correction coefficient;
when E3 is more than E4, selecting a fourth preset initial correction coefficient E4 as the initial correction coefficient.
4. The method for controlling boiler combustion based on coal quality detection according to claim 3, wherein after i=1, 2,3,4, the i-th preset initial correction coefficient e i is selected as the initial correction coefficient, further comprising:
presetting a positive influence coefficient H0, wherein H0 = 1;
obtaining volatile component content L0;
presetting first preset volatile content data L1, second preset volatile content data L2, third preset volatile content data L3 and fourth preset volatile content data L4, wherein L1 is more than L2 and more than L3 is more than L4; presetting a first preset adjustment coefficient l1, a second preset adjustment coefficient l2, a third preset adjustment coefficient l3 and a fourth preset adjustment coefficient l4, wherein 1.1 is more than 1 and more than 2, and 1 is more than 1 and more than 3 and more than 4 and more than 0.9;
when L0 is more than or equal to L1, a first preset adjustment coefficient L1 is selected to adjust the positive influence coefficient H0 once, and the positive influence coefficient after the primary adjustment is H0 x L1;
when L1 is more than L0 and is more than or equal to L2, selecting a second preset adjustment coefficient L2 to adjust the positive influence coefficient H0 once, wherein the positive influence coefficient after one adjustment is H0 x L2;
when L2 is more than L0 and is more than or equal to L3, selecting a third preset adjustment coefficient L3 to adjust the positive influence coefficient H0 once, wherein the positive influence coefficient after one adjustment is H0 x L3;
when L3 is more than L0 and is more than or equal to L4, the fourth preset adjustment coefficient L4 is selected to adjust the positive influence coefficient H0 once, and the positive influence coefficient after one adjustment is H0L 4.
5. The method for controlling boiler combustion based on coal quality detection according to claim 4, wherein after the i-th preset adjustment coefficient li is selected to perform one-time adjustment on the positive influence coefficient H0, i=1, 2,3,4, the method further comprises, after obtaining the one-time adjusted positive influence coefficient h0× l i:
obtaining fixed carbon content F0 of coal quality fed into a furnace;
presetting a first preset fixed carbon content F1, a second preset fixed carbon content F2, a third preset fixed carbon content F3 and a fourth preset fixed carbon content F4, wherein F1 is more than F2 is more than F3 is more than F4; presetting a first preset adjustment coefficient f1, a second preset adjustment coefficient f2, a third preset adjustment coefficient f3 and a fourth preset adjustment coefficient f4, wherein 1.1 is more than 1, f2 is more than 1, f3 is more than 4, and more than 0.9;
when F0 is more than or equal to F1, selecting a first preset adjustment coefficient F1 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x l i, wherein the secondary adjusted positive influence coefficient is H0 x l i x F1;
when F1 is more than F0 and is more than or equal to F2, selecting a second preset adjustment coefficient F2 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x li, wherein the secondary adjusted positive influence coefficient is H0 x li F2;
when F2 is more than F0 and equal to or greater than F3, selecting a third preset adjustment coefficient F3 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x li, wherein the secondary adjusted positive influence coefficient is H0 x li F3;
when F3 > F0 is greater than or equal to F4, selecting a fourth preset adjustment coefficient F4 to carry out secondary adjustment on the primary adjusted positive influence coefficient H0 x li, wherein the secondary adjusted positive influence coefficient is H0 x li F4.
6. The method for controlling boiler combustion based on coal quality detection according to claim 5, wherein after the i-th preset adjustment coefficient fi is selected to perform secondary adjustment on the primary adjusted positive influence coefficient h0×li, i=1, 2,3,4, obtaining the secondary adjusted positive influence coefficient h0×li, further comprising:
obtaining the hydrogen content K0 of the coal entering the furnace;
presetting a first preset hydrogen content K1, a second preset hydrogen content K2, a third preset hydrogen content K3 and a fourth preset hydrogen content K4, wherein K1 is more than K2 and more than K3 is more than K4; presetting a first preset adjustment coefficient k1, a second preset adjustment coefficient k2, a third preset adjustment coefficient k3 and a fourth preset adjustment coefficient k4, wherein 1.1 is more than k1 and more than k2 is more than 1 and more than k3 is more than k4 and more than 0.9;
when K0 is more than or equal to K1, selecting a first preset adjustment coefficient K1 to perform three times of adjustment on the forward direction influence coefficient H0 x l i x f i after the secondary adjustment, wherein the forward direction influence coefficient H0 x l i x f i x K1 after the three times of adjustment;
when K1 is more than K0 and is more than or equal to K2, selecting a second preset adjustment coefficient K2 to perform three times of adjustment on the forward influence coefficient H0 fi after the secondary adjustment, wherein the forward influence coefficient H0 fi K2 after the three times of adjustment;
when K2 is more than K0 and is more than or equal to K3, a third preset adjustment coefficient K3 is selected to perform three times of adjustment on the forward influence coefficient H0 fi after the secondary adjustment, wherein the forward influence coefficient H0 fi K3 after the three times of adjustment;
when K3 is more than K0 and is more than or equal to K4, selecting a fourth preset adjustment coefficient K4 to perform three times of adjustment on the forward influence coefficient H0 fi after the secondary adjustment, wherein the forward influence coefficient H0 fi K4 after the three times of adjustment;
and after the i-th preset adjustment coefficient ki is selected to perform three times of adjustment on the forward influence coefficient H0 x li after the secondary adjustment, i=1, 2,3 and 4, obtaining the forward influence coefficient H0 x li after the three times of adjustment as H0 x li ki, taking the forward influence coefficient H0 x f i x k i after the three times of adjustment as a final forward influence coefficient Ha.
7. The method for controlling boiler combustion based on coal quality detection according to claim 6, further comprising, after taking the three adjusted positive influence coefficients h0×li×fi×ki as the final positive influence coefficient Ha:
presetting a negative influence coefficient T0, wherein T0=1;
acquiring an ash value M0 of coal quality entering a furnace;
presetting a first preset ash value M1, a second preset ash value M2, a third preset ash value M3 and a fourth preset ash value M4, wherein M1 is more than M2 and more than M3 is more than M4; presetting a first preset adjustment coefficient m1, a second preset adjustment coefficient m2, a third preset adjustment coefficient m3 and a fourth preset adjustment coefficient m4, wherein m1 is more than 0.9 and less than m2 and more than 1 and less than m3 and less than m4 and less than 1.1;
when M0 is more than or equal to M1, selecting a first preset adjustment coefficient M1 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0 x M1;
when M1 is more than M0 and is more than or equal to M2, selecting a second preset adjustment coefficient M2 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0M 2;
when M2 is more than M0 and is more than or equal to M3, selecting a third preset adjustment coefficient M3 to adjust the negative influence coefficient T0 once, wherein the negative influence coefficient after one adjustment is T0M 3;
when M3 is more than M0 and is more than or equal to M4, a fourth preset adjustment coefficient M4 is selected to adjust the negative influence coefficient T0 once, and the negative influence coefficient after one adjustment is T0 x M4.
8. The method for controlling boiler combustion based on coal quality detection according to claim 7, wherein after the i-th preset adjustment coefficient mi is selected to perform one-time adjustment on the negative influence coefficient T0, i=1, 2,3,4, obtaining the negative influence coefficient after one-time adjustment as t0×mi, further comprising:
acquiring a water value N0 of coal quality entering a furnace;
presetting a first preset moisture value N1, a second preset moisture value N2, a third preset moisture value N1 and a fourth preset moisture value N4, wherein N1 is more than N2 and N3 is more than N4; presetting a first preset adjustment coefficient n1, a second preset adjustment coefficient n2, a third preset adjustment coefficient n3 and a fourth preset adjustment coefficient n4, wherein n1 is more than 0.9 and less than n2 and more than 1 and less than n3 and less than n4 and less than 1.1;
when N0 is more than or equal to N1, selecting a first preset adjustment coefficient N1 to carry out secondary adjustment on the negatively-adjusted influence coefficient T0 x mi, wherein the negatively-adjusted influence coefficient T0 x mi after secondary adjustment is T0 x N1;
when N1 is more than N0 and is more than or equal to N2, selecting a second preset adjustment coefficient N2 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi after secondary adjustment is N2;
when N2 is more than N0 and is more than or equal to N3, selecting a third preset adjustment coefficient N3 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi after secondary adjustment is N3;
when N3 is more than N0 and is more than or equal to N4, selecting a fourth preset adjustment coefficient N4 to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein the negative influence coefficient T0 x mi N4 after secondary adjustment;
and selecting an i preset adjustment coefficient ni to carry out secondary adjustment on the negative influence coefficient T0 x mi after primary adjustment, wherein i=1, 2,3 and 4, obtaining the negative influence coefficient T0 x mi after secondary adjustment, and then setting the negative influence coefficient T0 x mi after secondary adjustment as a final negative influence coefficient Ta.
9. The method for controlling boiler combustion based on coal quality detection according to claim 8, further comprising, after taking the secondary-adjusted negative influence coefficient as the final negative influence coefficient Ta, the steps of:
acquiring a heat value S0 of coal quality entering a furnace;
adjusting the heat value S0 of the coal quality entering the furnace according to the final positive influence coefficient Ha and the final negative influence coefficient Ta to obtain an adjusted heat value S0 Ta Ha;
presetting a first preset heat value S1, a second preset heat value S2, a third preset heat value S3 and a fourth preset heat value S4, wherein S1 is more than S2 and more than S3 is more than S4; presetting a first preset correction coefficient s1, a second preset correction coefficient s2, a third preset correction coefficient s3 and a fourth preset correction coefficient s4, wherein 1.1 is more than s1 and more than s2 is more than 1 and more than s3 and more than s4 is more than 0.9;
when S0 Ta Ha is more than or equal to S1, a first preset correction coefficient S1 is selected to correct the initial correction coefficient ei, and the corrected initial correction coefficient is ei S1;
when S1 is more than S0, ta is more than or equal to S2, selecting a second preset correction coefficient S2 to correct the initial correction coefficient ei, wherein the corrected initial correction coefficient is ei S2;
when S2 is more than S0, ta, ha is more than or equal to S3, a third preset correction coefficient S3 is selected to correct the initial correction coefficient ei, and the corrected initial correction coefficient is ei, S3;
when S3 is more than S0, ta, ha is more than or equal to S4, a fourth preset correction coefficient S4 is selected to correct the initial correction coefficient ei, and the corrected initial correction coefficient is ei, S4;
after the i-th preset correction coefficient si is selected to correct the initial correction coefficient ei, i=1, 2,3,4, and the corrected initial correction coefficient ei is obtained as ei, the corrected initial correction coefficient ei is used as a final correction coefficient ea, and the real-time combustion quantity D0 is adjusted according to the final correction coefficient ea, so that the adjusted real-time combustion quantity D0 ea is obtained.
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