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Fuel combustion calculation method under condition that content of residual CO in flue gas is high

A technology for combustion calculation and dry flue gas volume, which is used in measurement devices, analytical materials, and complex mathematical operations. It can solve problems such as deviation from the true value, and achieve the effect of improving accuracy and avoiding errors.

Active Publication Date: 2020-09-15
HUATIAN ENG & TECH CORP MCC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a fuel combustion calculation method under the condition of high residual CO content in the flue gas, to solve the problem that the existing calculation method deviates from the true value

Method used

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  • Fuel combustion calculation method under condition that content of residual CO in flue gas is high
  • Fuel combustion calculation method under condition that content of residual CO in flue gas is high
  • Fuel combustion calculation method under condition that content of residual CO in flue gas is high

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Effect test

Embodiment 1

[0056] When the calculation method of the present invention is used to calculate the combustion of every kilogram of solid fuel, it includes the following steps:

[0057] Step S1, obtaining raw data for combustion calculation, the raw data includes not only fuel composition data and flue gas composition data, but also ash carbon content data. Specifically, it consists of the following parts:

[0058] 1) Fuel composition data, including the mass content percentage of received base ash, carbon element, hydrogen element, oxygen element, nitrogen element and sulfur element A ar 、C ar 、H ar , O ar , N ar , S ar ;

[0059] 2) Ash carbon content data, including fly ash carbon content and slag carbon content

[0060] 3) Flue gas composition data, including O in dry flue gas 2 , CO volume percentage φ′(O 2 ), φ′(CO);

[0061] Combustion calculation is performed according to the raw data obtained in step S1.

[0062] Before step S2, calculate the carbon element mass conte...

Embodiment 2

[0092] When the calculation method of the present invention is used to calculate the combustion per kilogram of liquid fuel, it includes the following steps:

[0093] Step S1, obtaining raw data for combustion calculations. Compared with solid fuels, liquid fuels do not have ash carbon content, so there is no calculation of the actual burned carbon mass content percentage. The raw data includes fuel composition data and Smoke composition data, specifically, consists of the following parts:

[0094] 1) Fuel composition data, including the mass content percentage C of carbon element, hydrogen element, oxygen element, nitrogen element and sulfur element as received ar 、H ar , O ar , N ar , S ar ;

[0095]2) Flue gas composition data, including O in dry flue gas 2 , CO volume percentage φ′(O 2 ), φ′(CO);

[0096] Combustion calculation is performed according to the raw data obtained in step S1.

[0097] Step S2, assuming an initial actual dry flue gas volume V per kilogra...

Embodiment 3

[0115] The present invention can also be used for the combustion calculation of the mixed fuel of solid and gas, and the mixed combustion of pulverized coal and gas is used as an example for illustration, including the following steps:

[0116] Step S1, obtaining raw data for combustion calculation, the raw data not only includes fuel composition data and flue gas composition data, but also includes ash carbon content data, furnace gas flow rate and furnace coal quantity; specifically, by It consists of five parts:

[0117] 1) Combustion coal composition data, including mass content percentages of ash content, carbon elements, hydrogen elements, oxygen elements, nitrogen elements, and sulfur elements (A ar ) coal , (C ar ) coal , (H ar ) coal , (O ar ) coal , (N ar ) coal , (S ar ) coal ;

[0118] 2) Gas composition data, including CO, CO in gas 2 , N 2 、H 2 、H 2 S, H 2 O, hydrocarbon C m h n Volume content percentage φ(CO), φ(CO 2 ), φ(N 2 ), φ(H 2 ), φ(...

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Abstract

The invention discloses a fuel combustion calculation method under the condition of high residual CO content in flue gas, which comprises the following steps: S1, acquiring original data for fuel combustion calculation, which at least comprises fuel part data and flue gas part data; s2, assuming the initial actual dry flue gas quantity generated by fuel combustion; s3, regarding residual CO in theflue gas as incombustible gas, calculating theoretical dry air quantity required by fuel combustion according to the assumed initial actual dry flue gas quantity and the original data, and calculating theoretical dry flue gas quantity generated by fuel combustion according to the theoretical dry air quantity and the original data; s4, calculating an excess air coefficient according to the assumedinitial actual dry flue gas amount, the theoretical dry air amount obtained through calculation and the theoretical dry flue gas amount; and S5, calculating the actual dry flue gas amount generated by fuel combustion according to the theoretical dry air amount, the theoretical dry flue gas amount and the excess air coefficient which are obtained through calculation. The method can improve precision and reduce errors.

Description

technical field [0001] The invention relates to the technical field of fuel combustion, in particular to a calculation method for fuel combustion under the condition of relatively high residual CO content in flue gas. Background technique [0002] At present, when calculating fuel combustion, the theoretical dry air volume, theoretical dry flue gas volume, actual dry flue gas volume, excess air coefficient, etc. are generally calculated directly according to the fuel composition, which is suitable for the case where the amount of residual combustible gas in the flue gas is small The following is feasible. However, in the case of unsatisfactory combustion conditions, a lot of combustible gas (mainly CO) remains in the flue gas due to the incomplete combustion of the gas. At this time, the theoretical air volume required for combustion and the theoretical dry flue gas volume produced by combustion cannot be directly calculated according to the fuel composition, but the influe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G01N33/00
CPCG06F17/11G01N33/0004
Inventor 江文豪
Owner HUATIAN ENG & TECH CORP MCC