The selection of burners for oil-fired and gas-fired boilers shall be based on the structural characteristics and performance requirements of the boiler body and the user's service conditions. Generally, they can be selected according to the following principles:

1)根據用戶使用燃料類別選用，液體燃料有煤油、柴油、重油、渣油和廢油，氣體燃料有城市煤氣、天然氣、液化石油氣和沼氣，使用的燃料應有必要的分析資料：

1) According to the types of fuels used by users, liquid fuels include kerosene, diesel, heavy oil, residue and waste oil, and gaseous fuels include city gas, natural gas, liquefied petroleum gas and biogas. The fuels used shall have necessary analysis data:

①煤油、柴油應有發熱量和密度。

① Kerosene and diesel oil shall have calorific value and density.

②重油、渣油和廢油應有粘度、發熱量、水分、閃點、機械雜質、灰分、凝固點、密度和供油溫度。

② Heavy oil, residue and waste oil shall have viscosity, calorific value, moisture, flash point, mechanical impurities, ash, freezing point, density and oil supply temperature.

③燃氣應有發熱量、供氣壓力和密度。

③ The fuel gas shall have calorific value, gas supply pressure and density.

2)根據鍋爐性能及爐膛結構來選擇燃燒器中噴油嘴霧化方式或燃氣燃燒器的類型。

2) The atomization mode of fuel injection nozzle or the type of gas burner in the burner shall be selected according to the boiler performance and furnace structure.

3)燃燒器輸出功率應與鍋爐額定出力相匹配，選擇好火焰的形狀，如長度和直徑，使之與爐膛結構相適應。從火炬根部供給燃料燃燒所需要的空氣，使油霧或燃氣與空氣迅速均勻混合，保證燃燒完全。

3) The output power of the burner shall match the rated output of the boiler, and the shape of the flame, such as length and diameter, shall be selected to adapt to the furnace structure. The air required for fuel combustion is supplied from the root of the flare to quickly and evenly mix the oil mist or gas with the air to ensure complete combustion.

根據鍋爐改造確定的額定出力和鍋爐效率，計算出燃料消耗量，然後按所選單個燃燒器的功率確定燃燒器的配置數量。增加燃燒器的數量，有利於霧化質量，保證風油混合，但數量過多，又不便於運行維護，也會給燃燒器布置帶來困難。

The fuel consumption is calculated according to the rated output and boiler efficiency determined by the boiler transformation, and then the configuration number of burners is determined according to the power of the selected single burner. Increasing the number of burners is conducive to the atomization quality and ensure the mixing of air and oil. However, too many burners are not convenient for operation and maintenance, which will also bring difficulties to the layout of burners.

4)燃燒器調節幅度要大，能適應鍋爐負荷變化的需要，保證在不同工況下完全穩定地燃燒。

4) The adjustment range of burner shall be large, which can meet the needs of boiler load change and ensure complete and stable combustion under different working conditions.

5)燃油霧化消耗的能量要少，調風裝置阻力要小。

5) Fuel atomization consumes less energy and the resistance of air regulating device is small.

6)煙氣排放和噪聲的影響必須符合標準的要求，主要是S02、CO和NOx的排放量必須低於的規定，應選用低NOx和低噪聲的燃燒器。

6) The impact of flue gas emission and noise must meet the requirements of environmental protection standards, mainly the emissions of S02, CO and NOx must be lower than the national regulations, and the burner with low NOx and low noise shall be selected.

7)燃燒器組裝方式有整體式和分體式兩種。整體式即燃燒器本體、燃燒器風機和燃燒係統(包括油泵、電磁閥、伺服電動機等)合為一體;分體式即燃燒器本體(包括燃燒頭、燃油或燃氣係統)、燃燒器風機和燃燒器控製係統(包括控製盒、風機熱繼電器、交流接觸器等)三部分各為獨立係統，應根據鍋爐的具體情況和用戶要求選擇。

7) The burner can be assembled in two ways: integral type and split type. Integral type, that is, the burner body, burner fan and combustion system (including oil pump, solenoid valve, servo motor, etc.) are integrated; Split type, i.e. burner body (including combustion head, fuel oil or gas system), burner fan and burner control system (including control box, fan thermal relay, AC contactor, etc.) are independent systems, which shall be selected according to the specific conditions of boiler and user requirements.

8)應選用結構簡單、運行可靠、便於調節控製和修理、易於實現燃燒過程自動控製的燃燒器。

8) Burners with simple structure, reliable operation, easy adjustment, control and repair, and easy to realize automatic control of combustion process shall be selected.

9)應對燃燒器、性能、、使用壽命及售後服務進行綜合比較。

9) The brand, performance, price, service life and after-sales service of burner shall be comprehensively compared.

10)燃燒器的風壓除要考慮克服鍋爐本體的阻力外，還應克服器和煙氣係統的阻力。

10) In addition to overcoming the resistance of boiler body, the air pressure of burner shall also overcome the resistance of economizer and flue gas system.