Natural gas burner: straight flame flat flame burner

The concept and classification of natural gas burners: combustion devices that use natural gas as fuel are called natural gas burners, and some industrial kiln equipment commonly refer to natural gas combustion devices as natural gas burners.

1、 Burner classification:

According to the pressure of natural gas before the burner:

Low pressure natural gas burner: The natural gas pressure is below 5kpa.

High and medium pressure natural gas burner: The natural gas pressure is above 5kpa.

According to the shape and type of the flame:

Straight flame burner: also known as long flame burner, with a longer flame, commonly used in kilns, such as heat treatment kilns and container annealing furnaces.

Short flame burner: The flame is short and rigid.

Flat flame burner: The flame is sprayed out in the shape of a disc that is tightly attached to the furnace wall or evenly extended around the furnace top. Suitable for: shell baking furnace, forging heating furnace.

Classified by air supply method:

Self suction burner: The burner does not require the use of external force for air distribution, and has its own Venturi structure, which can suck in external air. Generally, the power of the burner is small.

Air distribution burner: combustion supporting air is forced by blower, and the fan is usually a high-pressure centrifugal fan.

According to the air fuel mixing method:

Diffusion burner: The air required for combustion is not pre mixed with natural gas.

Atmospheric burner: also known as semi premixed natural gas burner. The air required for combustion is mixed with natural gas.

Fully premixed burner: The air required for combustion is pre mixed with natural gas, and is generally used on flameless combustion type burners.

Special function classification: It can be divided into various new energy-saving burners, such as regenerative burners, radiation tube burners, adjustable temperature burners, and low nitrogen burners.

2、 Usage: Natural gas burners are commonly used combustion devices in industrial kilns. The performance of natural gas burners will greatly affect the quality of heating products. The structural design is reasonable and can meet the conditions required for combustion, heating, and product technology in kilns.

3、 Combustion process:

The combustion of natural gas is generally divided into three processes: the mixing of gas and air; Heating and ignition of mixed gases; Combustion of mixed gases. The condition for flame stability is that the flame propagation speed and the flow velocity of the combustible gas mixture are equal in magnitude and opposite in direction.

Unstable combustion: The mixing speed of gas and air exceeds the flame propagation speed, causing the flame to leave the stable point. Tempering of the burner: The mixing speed of gas and air is less than the flame propagation speed, and the flame sprays into the interior of the burner. The detachment and tempering of the burner are not the ideal combustion state of the burner, and the burner often adopts a flame stabilizing disc structure to forcibly change the combustion state and achieve the flame temperature combustion state.

4、 Conventional models and some mechanical dimensions of natural gas burners:

Burner model

Tracheal (mm)

Air duct (mm)

Caliber (mm)

90KW

DN15

DN40

φ sixty-nine

150KW

DN20

DN50

φ eighty-nine

230KW

DN25

DN50

φ one hundred and two

320KW

DN32

DN80

φ one hundred and twenty-seven

450KW

DN32

DN80

φ one hundred and forty

630KW

DN40

DN100

φ one hundred and fifty-nine

1000KW

DN15

DN15

φ one hundred and ninety-four

DN50

DN150

1200KW

DN15

DN20

φ one hundred and ninety-four

DN50

DN150

1500KW

DN15

DN20

φ two hundred and nineteen

DN50

DN200

2000KW

DN15

DN20

φ two hundred and seventy-three

DN65

DN200

3000KW

DN15

DN25

φ three hundred and twenty-five

DN80

DN300

10000KW

DN150

DN500

φ seven hundred

The above are the reference dimensions for conventional natural gas burners of Zhongwei Company. Non conventional models require customization.

5、 Principles and standards for selecting natural gas burners:

Natural gas burners are an important part of modern industrial furnaces and kilns. The selection of natural gas burners will directly affect the production of future furnaces and kilns. Natural gas burners should meet the requirements for combustion, heating, and heat transfer in furnaces and kilns, and the mechanical process performance of the burners and kilns should be considered uniformly.

The selection of the type and power of natural gas burners solely based on product samples is far from sufficient. Due to the lack of detailed technical parameters and inconsistencies with the heating conditions of the furnace, it is recommended that users communicate with the Zhongwei Technology Department on the phone (WeChat synchronization) at 15713691937 before making a selection decision.

6、 Principles and standards for selecting natural gas burners:

Zhengzhou Zhongwei Environmental Protection Equipment Co., Ltd., with years of practical experience in burner production and kiln engineering:

Safety principles:

The natural gas burner is also called natural gas burner, spray gun and torch. Its fuel is natural gas, English name (NG). As long as it is used as fuel with combustible and explosive gas, its safety design should be paid attention to. Zhengzhou Zhongwei Environmental Protection Equipment Co., Ltd. adopts a stable flame disc structure design in the natural gas burner structure, and the fuel and combustion air are mixed externally to ensure the design's reliability.

Secondly, the design of the natural gas burner control system is crucial. The natural gas burner control system draws on the design concepts and experience of excellent domestic and foreign manufacturers. Equipped with self-service ignition, flameout alarm, gas cut-off, leakage protection, and automatic temperature control, it can achieve local and remote DCS control functions.

Applicability principle:

Zhengzhou Zhongwei Environmental Protection Equipment Co., Ltd., based on years of experience in gas kiln design and construction, selects different types of gas burners according to the characteristics of different kilns (heating process characteristics and production characteristics) to ensure the effectiveness of coal to gas conversion in gas kilns and meet customer production needs.

Economic principle:

The selection of natural gas burners should minimize one-time investment and operating costs for users. In this regard, Zhongwei Company has collaborated with multiple domestic industrial kiln research institutes and industry associations to innovate and develop a new generation of "energy-saving" natural gas burners. In 2017, the third generation energy-saving natural gas burner in China was successfully developed and registered with the trademark "Shenzhihuo" code name "FST".

Zhongwei Environmental Protection Group Co., Ltd. (Zhengzhou Zhongwei Environmental Protection Equipment Co., Ltd., Zhengzhou Deste Automation Equipment Co., Ltd.) undertakes the "general contracting" project of large-scale gas and oil fired kilns, automation control systems, desulfurization and denitrification equipment, kiln refractory material masonry, and online monitoring devices both domestically and internationally. It is a "one-stop" environmental protection kiln boiler rotary kiln solution provider and implementer.

Contact number: 15713691937 13849187223

Xiong'an New Area: 19801987223 15720057200

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