Method for monitoring combustible gas concentration of biomass stack to prevent spontaneous combustion

Abstract

The invention relates to a method for monitoring the concentration of combustible gas in a biomass material stack to prevent spontaneous combustion. The method comprises the steps: detecting the concentration of the combustible gas released by degradation of the biomass stack in real time based on a gas detector installed in the biomass material stack; detecting the regularly sampled stacked samples through industrial analysis to measure the water content and the sludge content in the stack; calculating the stacking gas production rate according to the combustible gas concentration detected inreal time, speculating the temperature interval where the stack is located and whether a sharp temperature rise phenomenon occurs or not by combining the water content and the sludge content in the stack measured by regular sampling, monitoring whether the biomass material stack can spontaneously combust or not in real time, and if yes, sending stacking spontaneous combustion risk early warning information; and receiving,by the data processing center, the stacking spontaneous combustion risk early warning information that is received through the user terminal. All-weather and all-around real-time monitoring of fuel stacks can be achieved, spontaneous combustion of the stacks is prevented, and fire accidents caused by fuel degradation are avoided.

Description

technical field [0001] The invention belongs to the technical field of material stacking safety detection, and in particular relates to a method for monitoring the concentration of combustible gas in a biomass stack to prevent spontaneous combustion. Background technique [0002] Biomass fuels are mainly crop stalks and bark, which are combustible solids classified as Class C in terms of fire hazard, and their main components are cellulose, hemicellulose and lignin. Due to the high content of organic matter in the fuel, the loose structure, it is prone to corruption and deterioration, and produces some flammable gases. There is a great threat to these fuel piles, and there is a great fire hazard in these fuel stacks. [0003] At present, most biomass power plants use manual temperature measurement and infrared cameras to prevent spontaneous combustion of fuel stacks. For example, in the prior art, there is already a straw temperature measuring device for biomass power plan...

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Problems solved by technology

For example, in the prior art, there is already a straw temperature measuring device for biomass power plants (CN 201803810U). The implementation of this patent requires inspectors to carry out inspections with handheld temperature detectors. The temperature measurement is random and takes a few minutes to read. Taking the measured temperature, real-time online monitoring cannot be realized; and a fire warning device for a biomass power station storage yard (CN 211015828 U). Although this patent can monitor the temperature of the stockpile in real time, it cannot degrade and release the fuel in the stockpile. Combustible gas, local temperature rise is predicted, and the level of spontaneous combustion warning needs to be improved

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