COAL DUST SUPPRESSION SYSTEM

 
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Online Coal Dust Suppression System (CDSS)

Brief Description

The Coal Dust Suppression System is an ambient air quality monitoring and control system which monitors the air pollutants at areas near coal mines and initiates action to suppress air borne dust particles. The systemconsists of Coal Dust Suppression Units (CDSU), deployed at various locations at opencast coal mines, which senses the amount of coal-dust present in the air and activates the sprinklers when the dust content exceeds permissible limits. The sprinklers prevent coal-dust from becoming air-borne and also bring down dust particles in the air.The CDSU has provision for both wired and wireless activation of sprinklers.

In addition, the CDSU sends the sensed parameters to an Online Monitoring Software (OMS) running in a central server, where the data is displayed in an HMI and logged to database. This data is then used to generate daily reports about the ambient air quality with regards to the concentration of air pollutants - PM10, PM2.5, SO2, NO2, NO and CO.Fig.1 shows the typical architecture of the Coal Dust Suppression System.
 

CDSU Base

The Coal Dust Suppression Unit Base (CDSU Base) is an industrial grade dust monitoring unit which senses the concentration of PM10 and PM2.5 in the atmosphere and activates dust suppression sprinklers when the dust content exceeds safe permissible limit. CDSU Base has provision for wired and wireless activation of sprinklers. The CDSU features a wireless module which communicates with wireless slave device (CWS) which in turn activates motorized valves connected to the sprinklers. In addition, it sends the dust concentration values to Online Monitoring Software (OMS) using GPRS communication. The CDSU Base features a 3.5" display unit which displays the sensed parameters along with the status information of the unit. The unit is dust and water proof and is suitable for outdoor use.


 

Specifications

v Dust Sensor

  • Measurement method : Laser Light Scattering

  • Measurement parameters : PM10, PM2.5

  • Measurement range : PM10 : 0 2000 µg/m3
    PM2.5 : 0 1000 µg/m3

  • Resolution : 0.1 µg/m3

  • Flow rate : 1.0 LPM

v Other Sensors

  • Temperature Sensor : 0 70?

  • Humidity Sensor: 0 to 99% RH
     

v Additional Sensor Interfaces

  • Analog Input : 4-20mA, 6 Channels

  • Digital Input :12/24V DC, 4 Channels

  • Digital Output : 6/12/24V DC, 10 Channels

 

v Communication

  • GPRS to Online Monitoring Software

  • 2.4HGzIEEE802.15.4 to Wireless Slave

v Display : 3.5” Touch Display

v Data Storage: 8 / 16GB SD Card

v Operating Temperature :0°C 55°C

v Operating Humidity : 2095% RH

v Enclosure 

  • Lockable, IPx5, stainless steel cabinet

  • Dimension : 787x 475x 230mm
    (with air inlet hood)

v Weight : 20kg

v Power : 230V AC 50Hz

CDSU Pro

The Coal Dust Suppression Unit Pro (CDSU Pro) is an advanced ambient air quality monitoring instrument which senses the concentration of PM10 and PM2.5 and toxic gases like SO2, NO2, NO and CO present in the ambient air. In addition, the device has sensors for ambient temperature and relative humidity.The CDSU Pro uploads the sensed parameters to Online Monitoring Software (OMS) using GPRS communication. The device features a 3.5" display which displays the sensed parameters along with the status information of the unit. The unit is dust and water proof and is suitable for outdoor use. The CDSU Pro is a cost-effective solution for continuous ambient air quality monitoring.
 

Sensor Specifications

Parameter

Sensor Type

Measurement Range

Resolution

PM10

Laser Light Scattering based Dust Sensor

0 2000 µg/m3

0.1 µg/m3

PM2.5

0 1000 µg/m3

0.1 µg/m3

SO2

Electrochemical based Gas Sensing

0 1000 µg/m3

1 µg/m3

NO2

0 1000 µg/m3

1 µg/m3

NO

0 1000 µg/m3

1 µg/m3

CO

0 25 mg/m3

1 mg/m3

Temperature

Solid State Semiconductor Sensing

0 – 70 °C

0.1 °C

Humidity

0 – 99 % RH

0.2 %

Other Specifications

v  Display: 3.5” Touch Display

v  Data Storage: 16GB SD Card

v  Weight : 80kg

v  Power : 230V AC 50Hz

v  Communication: GPRS to Online Monitoring Software

v  Operating environment :0°C 55°C, 2095% RH

v  Enclosure  : Lockable, IPx5, stainless steel cabinet

v  Dimension : 1360x 635x 455 mm (with air inlet hood)

Online Monitoring Software (OMS)

The Online Monitoring Software (OMS) is standalone application designed to acquire, process and display ambient air quality data received from CDSU Base and CDSU Pro. The software manages connectivity with CDSU's deployed in the field, process and store the received data, display on an HMI and generate reports.
 

The OMS consists of the following submodules, the GUI for which is arranged in a tab navigator mode in the software.

v  CDSU Configurator

v  OMS Configurator

v  HMI Module

v  Report Module

v  User Management System

 

v  GPRS backend service

v  Data logger backend service

v  MySQL Database

 

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Contact Details for Techno Commercial Information

Mr. Titus A Chazhoor

Group Head, Control & Instrumentation Group,
C-DAC, Thiruvananthapuram
Email: titus@cdac.in

 

 

   

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