Pulp Mill 

Wood is transported to the mills by train, trailer trucks, tug boats or cargo vessels. At arrival the volume of incoming wood is measured. Then wood is taken to the debarking plant and further to the chipping plant. From here the chips are moved on conveyor to cooking. Our solutions:

Transport

• Commissioning with RFID and volume measurement
• Access protection
• Height measuring and position detection
• End position detection

 Log sorting

• Log measurement
• 3D log measurement
• Height measuring and diameter detection
• Access protection

 Transport and scrap wood disposal

• Quality determination
• Volume determination
• Distance measurement

Fibers and lignins of wood are separated in digesters of the cooking plant. Cooking chemical is white liquor consisting of NaOH and Na2SO4. Fibers are washed and bleached before drying and packaging. Used cooking chemicals, black liquor, is taken to evaporation. Blow off gases are containing of organic compounds like turpentine and malodorous sulfur compounds. Turpentine is distilled for by-products. Our solutions:

• Measurement of organic carbon emission (VOC) after turpentine condenser: GMS810-FIDOR
• Monitoring of lower explosion limit (LEL): EuroFID

Recovery boiler is the heart of the pulp mill, it recovers cooking chemicals of black liquor and produces process steam as a by-product. Flue gases have a high volume flow and they may contain mlaodorous sulfur compounds. In addition to SO₂, NOx, CO and dust, sulfur compounds (expressed as TRS, total reduced sulphur) have their own emission limits. Our solutions:

• Gas flow measurement of combustion air and exhaust gas with FLOWSIC100
• Monitoring of the electrostatic precipitator with the DUSTHUNTER SP100 dust analyzer and the FLOWSIC100 flow monitor 
• Emission monitoring with the MKAS analyzing systems or with GM32 and GM35 in-situ analyzers
• Dust emission monitoring with the DUSTHUNTER series
• Data acquisition and reporting with MEAC2000

The causticizing plant and the lime kiln are additonal parts of the recycling process. In the lime kiln calcium carbonat (lime, CaCO3) is burnt forming calcium oxide (CaO). In the causticizing plant the CaO is added to the black liquor. The sodium carbonate contained therein is converted into sodium hydoxide, the main component of white liquor. In addition exhaust gases out of the cooking plant are incinerated in the lime kiln. Flue gases of lime kiln may contain TRS, SO2, NOx, CO and dust. Our solutions:

• Gas  flow measurement of combustion air and exhaust gas with FLOWSIC100
• Emission monitoring with the MKAS analyzing systems or with GM32 and GM35 in-situ analyzers
• Dust monitoring with the DUSTHUNTER series 
• Data acquisition and reporting with MEAC2000

The biofuel boiler is used for production of energy in the pulp mill. The fuel is a mixture of bark, residual wood, turpentine and other hydrocarbons of the mill, residual paper and board and others. Emission limits are based on combustion plant or waste incineration regulations, consequently. Our solutions:

• Air and flue gas flow measurement: FLOWSIC100
• Emission monitoring with the MKAS analyzing systems or with GM32 and GM35 in-situ analyzers
• Dust monitoring with the DUSTHUNTER product family
• Data acquisition and reporting with MEAC2000

Exhaust gases with a high content of toxic sulfur compounds are burned in the NCG boiler. The boiler is equipped with a scrubber for minimizing emissions and recycling sulfur. Our solutions:

• Gas  flow measurement of combustion air and exhaust gas with FLOWSIC100
• Emission monitoring with the MKAS analyzing systems or with GM32 and GM35 in-situ analyzers
• Data acquisition and reporting with MEAC2000

• Flow measurement of HVLC and LVHC gases with FLOWSIC100 product family

Finishing of pulp prior to shipment is consisting of grading, squeezing, drying, sizing and packaging. Our solutions: 

• Pallets identification
• Access protection with muting
• Access protection without muting
• Safeguarding and reflector navigation for automatically guided vehicles
• Transport system protection