Landfill gas biogas flare workflow
Landfill gas biogas flare is one of the important environmental protection facilities in the landfill, and its main role is to burn the biogas produced by the landfill to reduce greenhouse gas emissions and prevent the occurrence of safety accidents such as biogas. The following is the workflow of the landfill gas biogas flare:
1. Biogas collection.
In the landfill process, organic matter decomposes under anaerobic conditions to produce biogas. The biogas is collected through a gas duct or collection well and transported to the flare system. The composition of biogas varies depending on the composition of the waste and the landfill conditions, and is mainly composed of methane, carbon dioxide, nitrogen, etc.
2. Biogas treatment.
Since the biogas contains a certain amount of water, hydrogen sulfide and other impurities, it needs to be treated to ensure the normal operation of the flare. The processing process includes:
1.Dehydration: Filtration, adsorption and other methods are used to remove the water in the biogas to prevent water vapor from condensing in the flare burner.
2.Desulfurization: Harmful gases such as hydrogen sulfide are removed from biogas by chemical or physical methods to reduce the impact on flare burners and the environment.
3. Torch burning.
The treated biogas enters the burner of the flare, mixes with air and ignites. The heat generated by combustion decomposes harmful substances in garbage and at the same time emits gases such as carbon dioxide into the atmosphere. The flare burner generally adopts gas burner or electric burner, and the appropriate type is selected according to the actual situation.
Fourth, security control.
Landfill gas biogas flares need to be equipped with complete safety control measures to ensure the safety of equipment and personnel. These include:
1.Explosion-proof device: In order to prevent the occurrence of safety accidents such as biogas**, the torch should be equipped with explosion-proof devices, such as explosion-proof valves, explosion-proof membranes, etc.
2.Flame-out protection device: When the torch is accidentally extinguished, the flame-out protection device can automatically shut down the burner to prevent the accident from expanding.
3.Temperature control: The temperature in the flare combustion chamber should be kept within a suitable range to prevent damage to the equipment caused by high temperatures or effects of low temperatures on combustion efficiency. Therefore, it is necessary to be equipped with a temperature control system, such as a cooling water system.
4.Pressure control: In order to prevent the influence of too high or too low biogas pressure on the operation of the flare, a pressure control system should be set up. When the biogas pressure exceeds a certain range, the pressure control system can automatically adjust the flow rate and pressure of the biogas to ensure the normal operation of the flare.
5.Alarm system: The torch should be equipped with a complete alarm system, so that in case of abnormal situations, the alarm should be timely and corresponding measures should be taken. The alarm system should include temperature alarm, pressure alarm, gas leakage alarm, etc.
6.Monitoring system: In order to monitor the operating status and safety status of the torch in real time, a monitoring system should be set up. The monitoring system can monitor and record the operating parameters of the torch in real time, detect abnormal conditions in time and take corresponding measures. At the same time, the monitoring system can also provide data support for the safe management and optimal operation of the flare.
7.Emergency measures: Formulate corresponding emergency measures for possible emergencies. For example, when a gas leak occurs in the flare, the emergency disposal procedure should be immediately initiated, the gas ** should be turned off, the fire extinguishing device should be activated, etc. At the same time, emergency drills should be conducted regularly to improve the ability to respond to emergencies.
5. Maintenance.
In order to ensure the normal operation of the landfill gas biogas flare and prolong the service life, regular maintenance should be carried out. These include:
1.Check whether the burner, valve and other components are working normally, and repair or replace them in time if there is any abnormality.
2.Check whether the pipes, valves and other connecting parts are tightened and sealed well, and if there is looseness or leakage, it should be dealt with in time.