Calculation Method of Air Leakage Rate of Air Preheater of Metallurgical Gas Boiler
A technology of air preheater and gas boiler, which is applied in the direction of instruments, calculations, special data processing applications, etc., and can solve the problems of deviation from the real value, complexity, loss of validity, etc.
Active Publication Date: 2017-10-31
HUATIAN ENG & TECH CORP MCC
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, this method is a simplified method formulated for conventional coal-fired boilers, which is suitable for conventional coal-fired boilers and most gas-fired boilers, but not for metallurgical gas boilers, mainly because the fuel characteristics of metallurgical gas are different from those of coal and conventional gas There is a big difference in fuel, which leads to the solution of the air leakage rate of the air preheater of the metallurgical gas boiler is very different from that of the conventional boiler. value, thus losing validity
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0047] The present invention is further described below.
[0048] The specific steps of the method for measuring and calculating the air leakage rate of the air preheater of the metallurgical gas boiler of the present invention are as follows:
[0049] The basic data required for the calculation of the metallurgical gas boiler air preheater are obtained through instrument measurement and sampling analysis, including:
[0050] Carry out gas sampling and analysis
[0051] Gas sampling is carried out on the main gas pipe in front of the furnace, and then the laboratory analysis is carried out to obtain the moisture content d of the gas respectively. g , gas dry basis composition data, the gas dry basis composition data include CO, H 2 、H 2 S, CO 2 , N 2 , O 2 , each hydrocarbon C m h n Volume content percentage φ(CO), φ(H 2 ), φ(H 2 S), φ(CO 2 ), φ(N 2 ), φ(O 2 ), φ(C m h n ).
[0052] Taking flue gas composition measurements
[0053] In the inlet flue of the air p...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for measuring and calculating the air leakage rate of an air preheater of a metallurgical gas boiler, which is mainly designed for accurately analyzing the air leakage rate of the air preheater of a metallurgical gas boiler. The method for measuring and calculating the air leakage rate of the air preheater of the metallurgical gas boiler of the present invention includes: respectively obtaining the gas composition sampling and analysis data, the flue gas composition measurement data and the atmospheric parameter measurement data; respectively obtaining the density of the dry gas and the gas required for the combustion of the dry gas per unit volume through calculation. Theoretical dry air volume, the actual dry flue gas volume corresponding to the air preheater inlet, the actual dry flue gas volume corresponding to the air preheater outlet, the excess air coefficient corresponding to the air preheater inlet, and the air preheater outlet The corresponding excess air coefficient, absolute air humidity and air leakage rate of the air preheater of the metallurgical gas boiler. The invention can accurately analyze the air leakage rate of the air preheater of the metallurgical gas boiler, and provides a basis for the performance assessment, equipment maintenance and transformation of the air preheater of the metallurgical gas boiler.
Description
technical field [0001] The invention relates to the boiler field of thermal energy engineering, in particular to a method for measuring and calculating the air leakage rate of an air preheater of a metallurgical gas boiler. Background technique [0002] Iron and steel enterprises produce a large amount of by-product gas during the smelting process, including blast furnace gas, coke oven gas and converter gas. As the main user of gas resource recovery and utilization, gas boilers have been widely used in iron and steel enterprises, especially in the current situation of increasingly tight resources and higher environmental protection requirements, which can highlight its economic and social benefits. [0003] The air leakage of the air preheater is a common problem that occurs during the operation of the boiler, and it is also one of the main factors affecting the economical efficiency of the boiler operation. The air leakage rate test of the air preheater is a necessary ite...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 江文豪姚群
Owner HUATIAN ENG & TECH CORP MCC