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Natural gas category I, II and III standards
Natural gas by sulfur and carbon dioxide content is divided into one category, two categories and three categories.

Improve a class of gas gas indicators, high fever

Considering the social, environmental and economic benefits of natural gas utilization and the characteristics of different users of gas and other aspects of factors, natural gas users are divided into priority categories, permitted categories, restrictions and prohibited categories.

A priority category

1, city gas:

(1), towns and cities (especially large and medium-sized cities), residential cooking, domestic hot water and other gas;

(2), public **** service facilities (airports, government agencies, staff canteens, kindergartens, schools, hospitals, hotels, hotels, restaurants, shopping malls, office buildings, railway stations, welfare institutions, nursing homes, ports, wharf passenger terminals, bus terminals, etc. ) for gas consumption;

(3), natural gas vehicles (especially dual-fuel and liquefied natural gas vehicles), including city buses, cabs, logistics and distribution vehicles, passenger vehicles, sanitation vehicles, and cargo vehicles and other natural gas-fueled transportation vehicles.

(4), centralized heating users (referring to the center of the central city and new districts);

(5), gas air-conditioning;

Industrial fuels:

(6), interruptible users in the industrial fields of building materials, electromechanical engineering, textile, petrochemicals, metallurgy, etc.

(7), natural gas-to-hydrogen projects as interruptible users;

Other users:

(8) natural gas distributed energy projects (comprehensive energy utilization efficiency of more than 70%, including the integrated use of renewable energy);

(9) natural gas (especially liquefied natural gas) fueled transport ships (including dual-fuel and single natural gas-fueled transport ships) in inland waterways, lakes and coastal shipping;

(10) natural gas storage facilities in cities and towns with emergency and peaking functions;

(11) coalbed methane (coal mine gas) power generation projects;

(12) natural gas cogeneration projects.

Two permitted categories

1, city gas:

(1), split heating users;

Industrial fuels:

(2), building materials, electromechanical, textile, petrochemical, metallurgy and other industrial areas of the natural gas in lieu of oil, liquefied petroleum gas projects;

(3), building materials, electromechanical, textile, petrochemical, metallurgy and other (3), natural gas-fueled new projects in the industrial sector;

(4), building materials, electromechanical, light textiles, petrochemical, metallurgical and other industrial sectors to replace coal with natural gas projects with better environmental and economic benefits;

(5), towns and cities (especially mega-cities, large cities) in the central city of the industrial boiler fuel natural gas replacement projects;

Natural gas-fired power generation:

(6), natural gas power generation projects other than Category I, Item 12 and Category IV, Item 1;

Natural gas chemical industry:

(7), natural gas hydrogen production projects other than Category I, Item 7;

Other Users:

(8), small-scale natural gas liquefaction facilities used for peak shifting and reserve purposes

Three Restricted Classes

1, natural gas chemical industry:

(1), the built ammonia plant expansion projects using natural gas as raw material, ammonia plant coal-to-gas conversion projects;

(2), methane as a raw material, the primary products include acetylene, chloromethane and other small carbon-mono-chemical projects;

(3), new nitrogenous fertilizer projects using natural gas as raw material.

Four, prohibited categories

1, natural gas power generation:

(1), Shaanxi, Mongolia, Jin, Anhui and other thirteen large coal bases are located in the area of construction of baseload gas power generation projects (coalbed methane (coal mine gas) power generation projects, except );

Natural gas chemical industry:

(2), the new construction or expansion of natural gas as raw material for the production of methanol and methanol Production of downstream products;

(3), natural gas instead of coal to methanol projects.

Legal basis:

Mandatory national standard GB17820-2012 Natural Gas

The amount of natural gas has been increased from more than 31.4 MJ/ m3 to more than 36 MJ/ m3, the amount of carbon dioxide has been increased from less than or equal to 3.0% to less than or equal to 2.0%, and the amount of total sulfur has been increased from no more than 100 mg/m3 to no more than 2.0%. 100 mg/m3 to no more than 60 mg/m3.