A low calorific value gas combustion device

Abstract

The invention discloses a low-heating-value gas combustion device. The low-heating-value gas combustion device comprises a combustion chamber, an air blower, a flame jetting opening, a gas inlet and an air inlet; the combustion chamber is of a hollow structure, the flame jetting opening is formed in the head of the combustion chamber, and the air inlet is connected with the air blower; in addition, the gas combustion device comprises a pre-mixing chamber of a hollow cylindrical structure, and the combustion chamber is arranged in the pre-mixing chamber; the gas inlet and the air inlet are formed in the bottom of the pre-mixing chamber and are arranged in a manner of being tangent to the pre-mixing chamber in the tangent line direction, and a fire adjusting device communicated with the pre-mixing chamber is arranged on the tail of the combustion chamber; and the low-heating-value gas combustion device mainly has the beneficial effects that the device is simple, scientific and compact in structure, and ignition is easy and reliable; and the flame jetting temperature is high, combustion is sufficient, stability is high, the temperature rise of a jetting opening is small, and the service life is long.

Description

technical field [0001] The invention relates to a cooker, in particular to a low calorific value gas combustion device using biomass raw materials such as firewood and straw as fuel. Background technique [0002] my country is a large agricultural country, and there is sufficient biomass energy such as firewood and straw. In the development and utilization of biomass energy, the common method is direct combustion or gasification power generation. However, when direct combustion is used, fuelwood needs to be added to the stove frequently. , it is inconvenient to use, gasification power generation is limited by the cost, and the economic benefits are not good, so it cannot be widely applied. Traditional stoves have a long history of using firewood and straw. Traditional stoves are inconvenient to use and have a low utilization rate of calorific value, generally only 15% to 20%, which causes serious air pollution. It is also gradually abandoned in the vast rural areas, resultin...

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Problems solved by technology

Due to the low calorific value and high flow rate of the gas from the biomass gasifier, the combustion stability of the gas is poor, especially at the initial stage of ignition, the gas has a low combustible content, and when it is used on a high-power boiler, it is difficult to ignite and prone to deflagration Coax, it is a challenge for safe use. During normal combustion, due to the low effective combustible components of the gas itself, the traditional burner does not burn sufficiently. For example, the burner disclosed in the patent No. 201410276080.3 has the highest temperature that can be achieved by its combustion. Low phenomenon

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