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

A waste incineration and monitoring system technology, applied in the field of pollutant discharge, can solve the problems of being unable to determine whether the pollutants in the flue gas emission are actually up to the standard, unable to trace the source, and unable to provide operation prompts for staff

Active Publication Date: 2020-12-08
苏州水云境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0139] In this embodiment, the monitoring module of the denitration spray gun includes a regulating valve arranged on the pipeline of each denitration spray gun, and the flow rate of the denitration spray gun can be controlled by adjusting the opening of the regulating valve. The regulating valve sends its opening degree information to the central controller. In the monitoring module of the denitrification spray gun, the central controller also receives NO from the CEMS system x NO in the flue gas provided by the sensor x data, central controller opening degree information and NO x After the data is calculated, alarms and prompts are output according to the calculation results.

[0140] Specifically, in the denitrification spray gun monitoring module, the central controller performs the following operations after obtaining the opening information and time of each regulating valve:

[0141] 1), calculation

[0142] Among them, Vlv(x).L 1 is the actual opening of the regu...

Embodiment 2

[0161] In this embodiment, the monitoring module of the denitrification spray gun includes a flow meter arranged on the pipeline of the denitrification spray gun, and the flow meter can feed back the total flow Q1 of the denitrification agent of the denitrification spray gun to the central controller. The central controller also accepts the NO from the CEMS system x NO in the flue gas provided by the sensor x data, the central controller passes through the total flow Q1 and NO x The data is calculated, so that we can know whether the current flow meets the denitrification requirements, and whether there is a fault or fraud in the CEMS system.

[0162] Specifically, in the monitoring module of the denitrification spray gun, the central controller performs the following calculation steps:

[0163] 1), calculate Q11=Q10*(W / W0),

[0164] Among them, Q11 is the safe total flow rate of denitrification agent calculated according to the production load, Q10 is the design value of t...

Embodiment 3

[0195] In this embodiment, the monitoring module of the acid removal reaction tower includes a regulating valve arranged on the lime water pipeline, and the regulating valve can adjust the opening degree to control the flow of lime water. The lime water pipeline regulating valve sends its opening information Vlv.L 2 sent to the central controller. In the monitoring module of the acid removal reaction tower, the central controller also receives NO from the CEMS system x NO in the flue gas provided by the sensor x data, SO 2 SO in the flue gas provided by the sensor 2 Data, the HCl data in the flue gas provided by the HCl sensor, the opening of the central controller Vlv.L 2 and NO x data, SO 2 After the data and HCl data are calculated, alarms and prompts are output according to the calculation results.

[0196] Specifically, in the acid removal reaction tower monitoring module, the central controller performs the following calculations:

[0197] 1), compare Vlv.L 2 Th...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G5/50
CPCF23G5/50
Inventor 冯述华唐平花
Owner 苏州水云境科技有限公司
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