Pre-mixed sour gas flare burner

Abstract

A pre-mixed sour gas flare burner comprises a gas inlet pipe, a pre-mixing burning chamber, a draught cover, an combustion-supporting gas pipe and an S-shaped porous fire gatherer. The draught cover is in a necked form and is arranged at the lower end of the pre-mixing burning chamber. The gas inlet pipe extends axially into the cavity of the pre-mixing burning chamber, and the upper end of the gas inlet pipe retracts at a certain level corresponding to the upper end of the pre-mixing burning chamber. The upper end of the gas inlet pipe is in the necked form. The combustion-supporting gas pipe axially extends to the interior of the gas inlet pipe, and the upper end of the combustion-supporting gas pipe retracts at a certain level corresponding to the upper end of the gas inlet pipe. The upper end of the combustion-supporting gas pipe is in a necked form and extends into the lower end of the necked portion of the gas inlet pipe. The S-shaped porous fire gatherer is arranged at the upper end of the pre-mixing burning chamber. The auxiliary gas is charged, air inputting amount is increased, mixing uniformity degree of gases is increased, the acid gas sufficient-burning rate is increased, and standard emission is realized; furthermore, flame can be stabilized, and instant burning can be realized.

Description

technical field [0001] The invention relates to a burner, in particular to a premixed acid gas flare burner. Background technique [0002] Flare gas is waste gas or flue gas produced in the production process of petrochemical industry, which is a flammable, explosive, poisonous and harmful gas. Since flare gas is very harmful to the environment, it cannot be treated by direct discharge. The current treatment method is widely used to deal with elevated flare or ground flare combustion. The flare burner, included in both elevated and ground flares, is a key component of the flare system. Multiple flare burners are arranged in the entire flare system, the main function is to treat the acid gas (such as H 2 S). [0003] The existing sour gas torch burner adopts a straight cylinder structure, the acid gas to be transported has a low pressure, the flame spreads and burns on the burner, the mixing degree of the acid gas and air is poor, the combustion is insufficient, the emissi...

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Problems solved by technology

[0003] The existing sour gas torch burner adopts a straight cylinder structure, the acid gas to be transported has a low pressure, the flame spreads and burns on the burner, the mixing degree of the acid gas and air is poor, the combustion is insufficient, the emission is not up to standard, and it is easy to cause environmental pollution. Pollution, even personal injury accidents; and the combustion temperature of acid gas is relatively high, such as H 2 The combustion temperature of S is above 800°C, so at present, it is necessary to use a pre-combustion cylinder for pre-heating, and then burn the acid gas, so the structure of the torch burner is complicated, the reliability is poor, and the cost of use is high.

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