This standard specifies the classification principles, index calculation methods and index requirements, safety indexes and interchangeability indexes of urban gas. This standard applies to the classification of various gases used as urban fuel. GB/T 13611-1992 Urban Gas Classification GB/T13611-92 GB/T13611-1992 Standard download decompression password: www.bzxz.net

Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
GB/T13611—92
Chengdong City
Classification
Classification of town gas
Published on August 15, 1992
Implemented on May 1, 1993
Published by the State Bureau of Technical Supervision
Engineering Construction Standard Full-text Information System
W Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Classification of town gas
Classification of town gas
1 Subject content and scope of application
GB/T13611—92
This standard specifies the classification principles, index calculation methods and index requirements, safety indexes and interchangeability indexes of town gas. This standard applies to the classification of various gases used as fuel in towns. 2 Reference standards
Gas chromatography analysis of artificial gas components
GB 10410.1
Gas chromatography analysis of natural gas constant componentsGB10410.2
GB10410.3 Gas chromatography analysis of liquefied petroleum gas componentsChemical analysis of main components of artificial gas
GB12205
6 Determination of calorific value of city gas
GB12206
GB12207
Determination of relative density of city gas
3 Terms, symbols and codes
3.1 Wobbe number W: heating index.
3.2 Combustion potential CP: combustion velocity index.
4 Technical requirements
4.1 City gas should be classified according to gas type and its combustion characteristic index (Wobbe number W and combustion potential CP), and its fluctuation range should be controlled. 4.2 The Wobbe number W is calculated according to formula (1):
Wherein: W—Wobbe number, MJ/m (kcal/m); Q—higher calorific value of gas, MJ/m/(kcal/m); —relative density of gas (relative density of air is 1). d
4.3 The combustion potential CP is calculated according to formula (2):
1.0H2+0.6(CmH,+CO)+0.3CH
CP=K×
Approved by the State Administration of Technical Supervision on August 15, 1992 Engineering Construction Standard Full Text Information System
Implementation on May 1, 1993
W. bzsoso:com Engineering Construction Standard Full Text Information System
Where: CP-
Combustion potential:
-Hydrogen content in gas, % (volume);
K=1+0.0054X02
Content of hydrocarbons other than methane in gas, % (volume); Carbon monoxide content in gas, % volume); Methane content in gas, % (volume);
d--Relative density of gas (relative density of air is 1); K--Correction coefficient of oxygen content in gas;
02--Oxygen content in gas, % (volume). 4.4 The classification of urban gas shall comply with the provisions of Table 1. Table 1 Classification of city gas (dry, 0℃, 101.3kPa) Class
Artificial gas
Natural gas
Liquefied petroleum gas
Huobai number W, MJ/m (kcal/m)
22.7(5430)
（6470)
（7800）
18.0（4300)| |tt||26.4(6300)
43.8(10451)
53.5(12768)
（13500）
81.2(19387)
(22152)
（20113）
Note: 6T is liquefied petroleum gas mixed with air, and its combustion characteristics are close to those of natural gas. 4.5 The test gas of various types of city gas should comply with the provisions of Table 2. 21.1(5050)~24.3(5810)
25.2(6017)~29.0(6923)
30.4(7254)~34.9(8346)
16.7(3999)~19.3(4601)
2 4.5(5859)~28.2(6741)
41.2(9832)~47.3(11291)
48.1(11495)~57.8(13796)
54.3(12960)~58.8(14040)||t t||76.9(18379)~92.7(22152)
76.9(18379)~92.7(22152）
76.9(18379)~92.7(22152)
4.5.1 The purity of the single gas used to prepare the test gas shall generally not be lower than the following values: Combustion potential CP
63~110
72~128
Nitrogen (N2): 99%, hydrogen (H2) 99%, methane (CH4): 95%, propylene (CH4): 90%, propane (CH4): 95%, butane (CH10) 95%.
The total content of hydrogen, carbon monoxide and oxygen shall be less than 1%, and the total content of nitrogen and carbon dioxide shall be less than 2%. 4.5.2 When the supply of methane, propylene, propane and butane is difficult, natural gas or liquefied petroleum gas can be used as a substitute according to the situation. 4.5.3 The error between the Wobbe number of the prepared test gas and that in Table 2 should be within ±2% (including the error of the measuring instrument). 2
Engineering Construction Standard Full-text Information System
W. Engineering Construction Standard Full-text Information System
Standard Wobbe number W
(kcal/m)
(5430)
(6470)
(7800)
Engineering Construction Standard Full-text Information System
Test gas
Test gas of various city gases (dry, 0℃, 101.3kPa) Table 2
Composition, % (volume)
High calorific value Q:
W; 21.1(5050)~24.3(5810)
W25.2(6017)29.0(6923)
W:30.4(7254)~34.9(8 346)
MJ/m2(kcal/m)
14.4(3451)
16.1(3839)
14.2(3386)
15.6(3732)
16. 2(3858)
18.2(4341)
16.3(3888)
18.0(4299)
18.4(4394)
20.4(4877)
18.0 (4295)
20.6(4930)
Relative density d
(1 for air)
Engineering Construction Standard Full-text Information System
Standard Hua
Natural gas
White number W
(kcal/m)
(4300)
(6300)
(10451)
Program Construction Standard Full-text Information System
Test gas
Composition, %(volume)
W:16. 7(3 999)~19. 3(4 601)
W: 24.5(5859)28.2(6741)bzxZ.net
W:41.2(9832)~47.3(11291)
Continued Table 2
High calorific value Q:
MJ/m2(kcal/m)
16.3(3899）
17.5(4184)
13.3 (3188)
15.1(3614)
29.4(7031)
32.1(7670)
22.0(5266)| |tt||26.8(6391)
34.2(8179)
38.9(9300)
34.2(8179)
32.6(7798)
Relative density d
(1 for air)
Engineering Construction Standard Full Text Information System
Standard China
Natural gas
Liquefied petroleum gas
Note: Test gas: 0
White number W
(kcal/m)
(12 768)
(13500)
Test gas
Base gas, 1-
Full text information system of construction standards
Composition, % (volume)
W: 48.1(11495)~57.8(13796)
W; 54.3(12960)58.8(14040)
W: 76.9(18379)~92.7(22152)
Yellow flame and incomplete Combustion limit gas; 2-
Continued Table 2
Tempering limit gas, 3
High calorific value Q:
MJ/m2(kcal/m)
39.8(9510)
47.8(11416）
30.3(7247)
36.8(8797)
46.0(10976)
49.6(11856)
43.7(10 447)
41.0(9803)
101.2(24172)
133.8(31957)
109.4(26118)
133.8(31957)
93.6(22358)
101.2(24172)
limit gas for fire.
Relative density d
(1 for air)
Full text information system of engineering construction standards
Additional notes:
This standard is proposed by the Ministry of Construction of the People's Republic of China. This standard is under the jurisdiction of the China Municipal Engineering North China Design Institute, the technical unit responsible for urban gas standards of the Ministry of Construction. This standard was drafted by the China Municipal Engineering North China Design Institute. The main drafter of this standard is Gao Yong.
This standard is entrusted to the China Municipal Engineering North China Design Institute for interpretation. 6
Engineering Construction Standards Full Text Information System
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.