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System and method for detecting smoldering in processes with continuous air flow

  • US 9,841,400 B2
  • Filed: 09/17/2015
  • Issued: 12/12/2017
  • Est. Priority Date: 09/17/2015
  • Status: Active Grant
First Claim
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1. A system for detecting a smoldering of a material in a processing equipment, the processing equipment having a first air inlet and an air outlet, the system comprising:

  • a plurality of sensors configured to measure concentrations of a trace gas, including a first sensor configured to measure a first concentration of the trace gas at the first air inlet, and a second sensor configured to measure a second concentration of the trace gas at the air outlet;

    an electronic control element configured to receive the measurements of the trace gas simultaneously from the plurality of sensors, consider the first concentration of the trace gas and the second concentration of the trace gas simultaneously to determine an amount of the trace gas being produced in the processing equipment, wherein in considering the first and second concentrations of the trace gas simultaneously to determine the amount of the trace gas being produced in the processing equipment, the electronic control element takes into account a delay, a dilution, and a time spread of any of the trace gas moving through the processing equipment between the first sensor and the second sensor, determine whether the amount of the trace gas being produced in the processing equipment exceeds a threshold value indicative of smoldering, and activate an alarm if the amount of the trace gas being produced in the processing equipment exceeds the threshold value; and

    a user interface configured to allow a user to interact with the electronic control element, including resetting the alarm.

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