The furnace flue gas analyzer is a device that continuously monitors the concentration and total emissions of gaseous pollutants emitted by atmospheric pollution sources and transmits the information in real time to the competent department. It is calledSmoke Automatic Monitoring System "(abbreviated asCEMS）The concentration of gaseous pollutants in the exhaust gas emitted from fixed pollution sources such as boilers, industrial furnaces, incinerators, etc（mg/m3）And emission rate（kg/h、t/d、t/a）Conduct continuous and real-time tracking testing.

According to the monitoring requirements provided by your company, our independently developed furnace flue gas analyzer adopts advanced technologyConstant potential electrolysis method+Extraction condensation methodExtraction based hot wet methodCEMSCapable of measuringSO2、NOx、O2Multiple parameters such as temperature, pressure, flow rate, humidity, etc., and transmit all monitoring parameters to the userDCSThe system communicates with the data system of the environmental protection department through a data acquisition instrument. The system equipment is placed in the analysis cabin for easy operation and maintenance; The entire system has a simple structure, modular design, strong stability, and low operating costs.

2 Introduction to System Components

2.1 furnacesComposition of Continuous Monitoring System for Smoke Emissions

CEMSGenerally, it consists of a smoke monitoring subsystem (dust) and a gaseous pollutant monitoring subsystem（SO2、NOX）Smoke parameter monitoring subsystem(Temperature, pressure, flow rateO2)The system consists of four basic components: system control and data acquisition and processing subsystem. The specific introduction is as follows:

2.2 CEMSSketch Map

picture2-2-1 removableCondensation methodCEMSSystem composition diagram

stem or root of plantsThe system consists of a sampling probe placed on the chimney, a dust analyzer, and a temperature pressure flow integrated probe, as well as an analysis cabinet placed in the cabin、Composed of standard gas and compressed gas sources.

• ü Sampling probe is responsible for smoke sampling, with built-in ceramicOr stainless steelFilter cartridge is used to filter dust in flue gas.
• ü High temperature tracing of heat tracing pipelines to avoid condensation of water vapor in flue gas.
• ü Dust meter is used to measure the concentration of chimney dust.
• ü Temperature pressure flow is used to measure the temperature, pressure, and flow velocity of flue gas inside a chimney.
• ü The analysis cabinet is responsible for extracting smoke,After filtering and condensing to remove watermeasureSO₂、NO_x、O₂Components.
• ü Standard gas is used to calibrate analytical instruments.
• ü The air compressor generates compressed air for regular blowback of the heat tracing pipeline, sampling probe, and temperature pressure flow.

2.3 Cabinet Description

picture2-3-1 removablecondensationlawCEMSFront of system cabinetone

picture2-3-2 removablecondensationlawCEMSSystem cabinetstraightfacetwo

2.4 System parameter description

• u Smoke temperature limit(minimum/highest)：0-300(Customizable)
• u Sampling method: direct sampling
• u Equipment requirements for vibration: No vibration
• u The compressed air requirements for the entire system are:0.4MpaAbove, oil-free and waterless
• u Maximum gas consumption:2.2m3/h
• u Average gas consumption:0.45m3/h
• u Maximum atmospheric flow rate(L/min)：2
• u Average airflow rate(L/min)：1.5
• u Size:800mm×800mm×2000mm
• u Weight: Approximately150kg
• u Heat tracing pipeline temperature:120oC～200oC
• u Probe heating temperature:120oC～200oC
• u Protection level: CabinetIP42, OtherIP65
• u Power supply:220VAC±10%， ＞3000W
• u Environmental temperature:-20oC～50oC
• u ambient humidity:5%Rh～95%Rh(No condensation)
• u External output:4-20mA，RS232，RS485
• u Standard gas:8L,steel cylinder

3 Project Design Proposals

3.1 measureparameter

SO2、NOX、O2、 Temperature, pressure, flow rate (flow rate), dust;

3.2 measuring method

• u Smoke sampling method: high temperature condensation extraction method;
• u Measurement method for SO2 and NOX: UV differential absorption spectroscopy（DOAS analysis technology;
• u O2 measurement method: electrochemical;
• u Measurement method for flue gas temperature: Thermistor (or thermocouple);
• u Smoke pressure measurement method: pressure sensor;
• u Measurement method for flue gas velocity: micro differential pressurelaw(Pitot tube)；
• u Measurement method for smoke and dust: laser scattering method;

3.3 System Characteristics

Brick and tile kiln flue gas onlineThe system mainly has the following features:Technical advantages：

• u Advantage 1: Based on the condensation direct extraction high-temperature tracing method, advancedUV Differential Absorption Spectroscopy TechnologySpectral holographic grating splitting, diode array detection, obtaining complete continuous absorption spectra, high wavelength resolution ensures low detection limit, small temperature drift, and small response time,No need to increaseNO2→NOConverter, directly measurableNO2， Flexibly expand modules such as CO and CO2.
• u Advantage 2:usePLC control, high degree of automation, LCD screen display system flow path, collection of detailed system status information, can be used as the most advantageous resource for data validity review；
• u Advantage 3: Rapid water removal and cooling through secondary condensation, reducing the contact time between gas and water, and loweringSO2 loss, the sampling probe uses multi-stage dust filtration technology combined with timed blowback to effectively solve the problem of probe blockage and adapt to the harshest environments such as high dust, high humidity, high temperature, and high corrosiveness;
• u Advantage 4: The gas chamber of the analyzer is made of stainless steel, which is strong, cost-effective, and less affected by moisture and dust. The detector and gas chamber are connected by optical fibers, making replacement convenient and maintenance cost-effective;
• u Advantage 5:Intelligent design, automatic zeroing, range exceeding alarm, humidity alarm, sampling probe temperature abnormal alarm, condenser temperature abnormal alarm, heating temperature abnormal alarm, fault alarm;
• u Advantage 6: The temperature pressure flow detector adopts an integrated cabinet,High precision micro differential pressure transmitter (with low detection limit), automatic zero adjustment, automatic blowback, blowback protection, data upload and display functions;

4 System Configuration Checklist

4.1 CEMSList of Main Supply Equipment

4.2 spare parts

4.2.1 Random spare parts list

4.2.2 One year spare parts list

4.2.3 Technical Data List