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A new method for correcting heat load parameters of boiler furnace in plateau area

A boiler furnace and parameter correction technology, applied in special data processing applications, geometric CAD, calculation, etc., can solve problems such as boiler design difficulties, increased furnace volume, and increased furnace height

Active Publication Date: 2021-06-04
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the boiler furnace characteristic parameters in the plateau area are corrected in accordance with the furnace type selection guidelines, the furnace volume may increase too much
It should be pointed out that as the atmospheric pressure decreases and the flue gas volume expands, the flue gas flow rate in the furnace increases. At this time, if the furnace section is not properly corrected, in order to ensure the residence time of pulverized coal in the furnace, the height of the furnace will increase too much. many
In addition, when the altitude reaches a certain height, it may bring difficulties to the boiler design

Method used

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  • A new method for correcting heat load parameters of boiler furnace in plateau area
  • A new method for correcting heat load parameters of boiler furnace in plateau area
  • A new method for correcting heat load parameters of boiler furnace in plateau area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 660MW four-corner tangential combustion boiler, with an altitude of 2445m, the design coal is bituminous coal with excellent combustion performance and low slagging tendency

[0025] 1) Grasp the basic coal quality parameters of the designed coal (total moisture M t %, received base ash A ar %, dry ash-free base volatile V daf %, received base low calorific value Q net,v,ar MJ / kg, total sulfur S t,ar %, ash melting point DT / ST / HT / FT℃) and combustion performance parameters (ignition temperature of pulverized coal flow IT℃, burnout rate of one-dimensional flame furnace Bp%, one-dimensional flame furnace slagging index Sc).

[0026] The specific coal quality parameters and combustion performance parameters of the designed coal are shown in Table 1.

[0027] Table 1 Basic coal quality parameters and combustion performance parameters of design coal

[0028]

[0029] 2) According to the 2015 edition of "Guidelines for the Selection of Large-capacity Pulverized Coal-f...

Embodiment 2

[0054] 660MW four-corner tangential combustion boiler, with an altitude of 2445m, the design coal is bituminous coal with excellent combustion performance but serious slagging tendency

[0055] 1) Grasp the basic coal quality parameters of the designed coal (total moisture M t %, received base ash A ar %, dry ash-free base volatile V daf %, received base low calorific value Q net,v,ar MJ / kg, total sulfur S t,ar %, ash melting point DT / ST / HT / FT℃) and combustion performance parameters (ignition temperature of pulverized coal flow IT℃, burnout rate of one-dimensional flame furnace Bp%, one-dimensional flame furnace slagging index Sc). The specific coal quality parameters and combustion performance parameters of the designed coal are shown in Table 1.

[0056] Table 1 Basic coal quality parameters and combustion performance parameters of design coal

[0057]

[0058] 2) According to the 2015 edition of "Guidelines for the Selection of Large-capacity Pulverized Coal-fired ...

Embodiment 3

[0078] 660MW four-corner tangential combustion boiler, with an altitude of 3500m, the design coal is bituminous coal with excellent combustion performance and low slagging tendency

[0079] 1) Grasp the basic coal quality parameters of the designed coal (total moisture M t %, received base ash A ar %, dry ash-free base volatile V daf %, received base low calorific value Q net,v,ar MJ / kg, total sulfur S t,ar %, ash melting point DT / ST / HT / FT℃) and combustion performance parameters (ignition temperature of pulverized coal flow IT℃, burnout rate of one-dimensional flame furnace Bp%, one-dimensional flame furnace slagging index Sc).

[0080] The specific coal quality parameters and combustion performance parameters of the designed coal are shown in Table 1.

[0081] Table 1 Basic coal quality parameters and combustion performance parameters of design coal

[0082]

[0083]

[0084] 2) According to the 2015 edition of "Guidelines for the Selection of Large-capacity Pulve...

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Abstract

The invention discloses a new method for correcting boiler furnace heat load parameters in plateau areas. 1. Grasp the basic coal quality parameters and combustion performance parameters of the designed coal; Select the heat load parameters of the boiler furnace in the plain area, specifically including the heat load q of the boiler section in the plain area F , heat load q on the wall surface of the boiler burner area in the plain area B , the distance h between the center of the burner on the uppermost layer of the boiler in the plain area and the bottom of the screen 1 Boiler furnace volume heat load q in plain area v ; According to the combustion performance of the designed coal, the heat load parameters of the boiler furnace in the plateau area are calculated, specifically including the heat load q of the boiler section in the plateau area FG , heat load q on the wall surface of the boiler burner area in the plateau area BG , the distance h between the burner center of the uppermost layer of the boiler in the plateau area and the bottom of the screen 1G and boiler furnace volume heat load q in plateau area vG Adopting the inventive method is more conducive to the stable combustion and burnout of the pulverized coal boiler in the plateau area.

Description

technical field [0001] The invention relates to the technical field of selecting heat load parameters of boiler furnaces in plateau areas, in particular to a new method for correcting heat load parameters of boiler furnaces in plateau areas, which is suitable for selecting furnace heat load parameters of four-corner tangential combustion boilers in plateau areas. Background technique [0002] The combustion properties of coal samples such as ignition, burnout and slagging are the basis and basis for boiler design. Under plateau conditions, due to the decrease of oxygen partial pressure, the ignition and burnout properties of coal samples become worse, but the slagging performance does not change significantly. Therefore, some measures for stable combustion and burnout should be properly considered in the design of boilers in plateau areas. In addition, under plateau conditions, the volume of air entering the furnace and flue gas will increase. If the design of boilers in pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F119/08
CPCG06F30/17G06F2119/08
Inventor 刘家利姚伟屠竞毅王志超王桂芳杨忠灿
Owner XIAN THERMAL POWER RES INST CO LTD