TK-1000 CEMS Continuous Online Monitoring System for Smoke Emissions

TK-1000 Continuous Online Monitoring System for Smoke Emissions

1、 Product Overview

Smoke online monitoring equipmentBy using extraction condensation sampling, backscattering smoke concentration measurement, pitot tube flue gas velocity measurement, and computer network communication technology, online continuous monitoring of pollutant emission concentration and total emissions from fixed pollution sources has been achieved. At the same time, technical improvements have been made in response to the situation where domestic coal types are relatively diverse, coal quality changes greatly, pollutant emission concentrations are high, and flue gas humidity is high. And it is designed and finalized according to national standards, providing a professional Chinese operating platform and Chinese report function, multiple sets of analog and switch input and output interfaces, which can realize the connection of fieldbus and the selection of multiple communication methods, making the system operation convenient and flexible.

Smoke online monitoring equipmentCEMS is a fully functional and high-level online monitoring system for fixed pollution sources. It mainly consists of the following subsystems:

1. The solid particulate matter continuous monitoring subsystem adopts laser backscatter single point monitoring.

2. Multi component gas analyzer (SO) for continuous monitoring subsystem of gaseous pollutants₂、NO_X、CO、CO2、HCL、HF、NH3）

3. Continuous monitoring subsystem for smoke parameters such as oxygen content, smoke flow rate, pressure, temperature, humidity, etc

4. Data Processing and Remote Communication System

2、 Technical Description

◢The extraction condensation method CEMS can measure SO2, NOx, O2, temperature, pressure, flow rate, dust, and humidity;

◢SO2 and NOx are analyzed using ultraviolet differential absorption spectroscopy (DOAS) or infrared NDIR analysis techniques;

◢O2 adopts electrochemical oxygen cells;

◢The humidity is measured using the high-temperature capacitance method;

◢Temperature, pressure, and flow rate are measured using thermistor (PT100), pressure sensor, and pitot tube micro pressure difference method, respectively;

◢Dust is collected using laser backscatter method;

◢The ultraviolet differential absorption spectroscopy (DOAS) analysis technology can not only measure SO2 and NOx, but also analyze gases such as NH3, Cl2, H2S, O3, etc;

◢Compared with the extraction hot wet CEMS, this system has the advantages of simple structure, high reliability, fast response speed, and easy maintenance;

◢Compared with the in-situ method, the analyzer has the advantages of supporting online calibration, small measurement value fluctuations, high reliability, and simple equipment maintenance;

This analyzer has a compact overall structure, making it easy to transport and install.

◢The data collection rate of the system operation is ≥ 90%, the availability rate of the detection data provided by the system is ≥ 90%, and it has the function of viewing historical data.

◢Output unit: For various parameters of the detected flue gas, the system not only displays them on the on-site analysis instrument panel, but also outputs 4-20mA standard analog signals. The concentration unit of gaseous pollutants is mg/Nm³The flow rate signal measured by the flowmeter should be converted into volumetric flow rate Nm³/S output, temperature unit is ℃.

◢The system can truly achieve unmanned operation, with self diagnostic function and main component fault alarm function, including: failure of measuring elements/detection probes, exceeding the range, insufficient sampling flow rate, low blowback pressure, low sampling head temperature, low sampling pipeline temperature, pre-processing system failure, analytical instrument failure, etc.

3、 Technical parameters

project	Measuring principle	indicator
particulate matter More details ...	Laser backscatter method	measurement range	小0-200 mg/m3,0-10g/m3
		accuracy	≤50mg/m3When the error is ≤ ± 15mg/m3.
		zero drift	≤±2.0%F.S.
		Span Drift	≤±2.0%F.S.
gaseous pollutants （SO2、NOX） More details ...	NDIR Infrared Principle/UV Differential Spectral Absorption Method	measurement range	0-5000mg/m3(can be customized according to needs)
		zero drift	≤±2.0%F.S.
		Span Drift	≤±2.0%F.S.
		response time	≤100S.
		linear error	≤±5.0%.
		repeatability error	≤±2.0%.
Oxygen content in flue gas More details ...	Electrochemical/Zirconia Method	measurement range	0-25%
		linear error	≤±5.0%.
		zero drift	≤±1.0%F.S.
		Span Drift	≤±1.0%F.S.
		Relative accuracy	≤±5.0%.
		response time	≤100S.
		repeatability error	±2%
flow velocity More details ...	S-shaped Pitot Tube Method	measurement range	0-40m/s
		precision	≤5.0%.
		relative error	When the speed is greater than 10m/s, the relative error is ≤± 10%; When the speed is less than 10m/s, the relative error is ≤± 12%.
temperature More details ...	Thermal resistance method	measurement range	0-500℃
		Indication deviation	≤±3℃
pressure More details ...	Differential pressure sensor	measurement range	-3000~+3000Pa
		accuracy	±2.5%F.S

4、 Product Features

Easy maintenance and simple operation;

The gas chamber has a micro heat tracing function to reduce the lens cleaning cycle;

The system has a simple structure and high integration;

Under the action of the drainage pump, the flue gas enters the gas chamber directly through the probe and heat tracing pipeline to measure the concentrations of SO2 and NOx. It then enters the zirconia/humidity/drainage pump module and is directly discharged. The system has a simple structure, high integration, and easy maintenance;

All core components and algorithms are independently developed;

The core components include light source, spectrometer, gas chamber, humidity module, dust analyzer, etc., all of which are independently developed;

The DOAS algorithm is independently developed, and the system has strong market competitiveness.

5、 Main functions

Monitoring project:Smoke (particulate matter) concentration SO₂Multiple related parameters such as concentration (standard, wet basis, dry basis, and conversion), flue gas flow rate, flue gas temperature, flue gas humidity, and flue gas oxygen content, as well as statistical emission rates and total emissions.

Display function:A fully Chinese graphical interface that can display parameter lists, real-time curve graphs, historical curve graphs, historical data, alarm screens, reports, and more.

Printing function:Scheduled printing and manual printing (including images, curves, parameters, and reports).

Alarm function:Overlimit alarm and accident alarm.

Historical data:Complete historical data storage and display functions, with data storage intervals of up to 1 second and storage capacity of up to several years.

data transmissionThe system's data can be shared with other computers through a local area network, or transmitted remotely through GPRS.

Scalability:Strong scalability, able to add new content at any time according to changes in policies and regulations.

Communication interface:RS232/RS422/RS485