A whole-process monitoring system for grate furnace waste incineration and discharge

Abstract

The invention relates to the field of pollutant discharge and particularly relates to a fire grate furnace garbage incineration discharge full-process supervision system. The system is characterized in that a CEMS system is arranged at a flue gas exhaust port of a grate furnace, the full-process supervision system comprises monitoring modules and a central controller, the monitoring modules and the central controller are arranged in all devices of the grate furnace, monitoring data obtained by the monitoring modules and the CEMS system are fed back to the central controller, the central controller carries out accounting of the monitoring data and outputs an alarm according to the accounting result, the central controller can output an operation prompt while or after outputting an alarm. The process model supervision scheme creatively realizes the scheme of qualitatively accounting whether the flue gas reaches the emission standard or not based on a waste incineration process model in combination with the actual operation parameters, can timely discover whether a CEMS instrument fails or is artificially modified or not, and improves monitoring effectiveness; once an alarm is given,the whole-process supervision system can trace back reasons and provide operation prompts so that a phenomenon of illegal emission is rapidly eliminated.

Description

technical field [0001] The invention relates to the field of pollutant discharge, in particular to a monitoring system for the whole process of waste incineration and discharge from grate furnaces. Background technique [0002] Domestic waste incineration produces various harmful gases, which need to go through a compliant purification process before being discharged into the atmosphere. The incineration gas purification in the prior art is usually based on the selective non-catalytic reduction SNCR (selective non-catalytic reduction) process, the main process is as figure 1 Shown include desulfurization, denitrification, activated carbon adsorption and bag dust removal. Depend on figure 1 It is easy to know that in order to ensure that the final flue gas can be discharged qualifiedly, the whole process of environmental protection treatment from the combustion process to the discharge should be up to standard, specifically including: 1. The combustion process in the grate ...

AI Technical Summary

Problems solved by technology

However, the current technical solution for flue gas emission detection is only to detect the purified flue gas through the CEMS (flue gas online detection system) flue gas composition measuring instrument, which cannot take into account the whole process of incineration at all.

This has led to the following four core problems. 1. If the CEMS flue gas composition measuring instrument is illegally tampered with, it is impossible to determine whether the pollutants in the flue gas emission are actually up to the standard; 2. Even if the flue gas is found to exist through the CEMS flue gas composition measuring instrument The situation of exceeding the standard cannot be traced to the specific problem-solving link; 3. There is no way to issue an early warning for the situation that is about to exceed the standard; 4. It is impossible to provide operation prompts to the staff according to the situation of exceeding the standard

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