Real Time Online Solid Powder Flowmeter

In the production process of modern industry, the application of Solid Powder Flowmeter is becoming more and more extensive. The powder flowmeter adopts high temperature and high pressure resistance design, which is suitable for various industrial production environments.

Coal injection in power plant boilers, coal powder mass flow measurement;
Activated carbon flow detection for waste incineration power generation in power plants;
Limestone powder flow measurement during pneumatic conveying;
Sodium phosphate flow monitoring;
Blast furnace coal injection flow detection;

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Real Time Online Solid Powder Flowmeter Description

The powder flowmeter uses the most reliable electrostatic measurement technology. When the airflow containing dust particles in the pipeline passes through a fixed sensor, the weak current generated by the dust particles in motion is collected by the sensor and transmitted to the transmitter. After being filtered and amplified by the transmitter, it is processed into a standard output value that is linearly related to the dust flow.

The powder flowmeter is integrated and has a two-wire structure. It makes installation and use extremely simple. It can be easily connected to the user’s automation management system. Real-time monitoring of the working conditions of its upstream equipment can play a role in the energy-saving and efficiency-enhancing process implemented by the enterprise.

Solid Powder Flowmeter Technical Parameters

Process gas temperature	0℃～250℃（260℃-800℃ can be customized）
Process gas pressure	-0.1Mpa-1Mpa
Process gas flow rate	3m/s-30m/s
Process gas humidity	No condensation, no condensation 90%
Working temperature	-50℃～260℃
Working pressure	-0.1Mpa-2Mpa
Working flow rate	1m/s～30 m/s

Sensor part
Working pressure	-0.1Mpa-2Mpa
Working flow rate	1m/s～30 m/s
Working temperature	-50℃～260℃（450℃）
Pipeline outer diameter	10mm～600mm
Sensor structure	Unobstructed pipeline type
Applicable particle size range	0.1uM～2000 uM

Transmitter part
Operating environment electromagnetic field	Maximum value at 50 Hz = 60A/m
Operating environment humidity	Non-condensing 90%
Operating environment temperature	-40℃~85℃ (electronic components)
Operating environment vibration	Maximum continuous oscillation, any direction, any frequency: RMS value 2g (20m/s2)
Operating environment protection	Protection level: IP66/NEMA4 aluminum alloy housing
Transmitter power supply	24V (available in the range of 15V~32V)
Transmitter output	4~20mA isolated output
Response time	1 second
Power consumption	Maximum 3W
Accuracy level	Full scale ±5%
Zero drift	Less than 1%
Full scale drift	Less than 1%
Measurement range	0-20kg/100kg/500kg/20t/100t/h, other specifications can be customized

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Sino-Inst supports the customization of powder flowmeters. Using annular sensors, it is suitable for measuring solid mass flow in metal-enclosed pipes in a wide range from kg/h to t/h. It is suitable for online monitoring of solid flow such as powder and dust conveyed by pneumatic conveying.

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Paperless Recorder

Solid Powder Flowmeter

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Featured Applications

Powder flowmeters can be widely used in various industrial applications, such as ironmaking, power generation, pharmaceutical machinery, chemical industry, building materials processing, cement manufacturing and other industries.

Typical uses include coal injection pipelines for ironmaking blast furnaces, coal injection pipelines for thermal power generation boilers, process transportation total amount monitoring, various fuel boilers and other production powder flow monitoring.

Recovery of powdered materials, monitoring of powder transportation process

Take coal injection in ironmaking blast furnaces and coal injection in power generation boilers as examples. Blast furnace coal injection and power station boiler coal injection are to dry and grind the raw coal (anthracite, bituminous coal), collect it through bag dust collectors, make it enter the coal powder bin, enter the injection tank for mixing, and transport it with compressed air (or nitrogen). It is sent from the injection tank to the distributor. It is directly sprayed into the furnace from each coal injection gun through the distributor.

The powder flow meter is installed on the pipelines of each coal injection gun after the distributor, and can monitor the transportation status of the gas-solid two-phase fluid in each coal injection pipeline at any time, and calculate the total transportation amount. It can also alarm the blockage of each coal injection pipeline.

More Detail

Alarm Setting

The powder flowmeter is set in the PLC or other recordable system. The output signal 4-20mA is converted into a visible and readable value (such as mg/m³). The conversion method is as follows: Taking the range of 0-100Kg/h as an example, 4mA corresponds to 0Kg/h, and 20mA corresponds to 100Kg/h.

Set the powder blockage flow value in the control system (generally set to 2% of the full scale). When the flow is lower than this value, an alarm will be triggered. Due to the different precision of the equipment and the different usage requirements of each factory, corresponding adjustments can also be made according to the actual situation. And time delay processing is performed to avoid false alarms.