Tissue Machine Recard 3.185mm Crescent Former, 100tpd
SOLD SUBJECT TO CONTRACT
PAPER MACHINE DESCRIPTION
The paper machine processing line consists of a plant starting from cellulose alone, produces tissue paper mainly from virgin fibre, there is also a line consisting of a screen one and CH7 to treat selected white pulp, office, printout.
The industrial line comprises the following stages of processing.
- High consistency pulper.
- Pulp preparation for virgin fibre.
- Preparation of mixtures for selected pulp
- Process water treatment.
- Approach system for single jet line.
Crescent Former continuous machine.
The paper machine plant was originally designed and built for paper production by double jet headbox, then modified to be used with a single layer by replacing the headbox with a single jet from the ST machine company. The plant was born in Crescent Former configuration. The plant has two pulp preparation lines with a single pulper for the processing of FL and FC separated, then mixed together. The mixing takes place in the mixing tank by means of a automatic valve and FT system, a pulper trimming line is also installed UTM.
- Technology – Crescent former
- Manufacturer – Recard
- Startup – May 2001
- Production – potential maximum of 100 TPD.
- Product – Hygienic tissue paper
- Paper sheet width – 3,185 mm
- Grammage – 11.5gsm to 27gsm
The plant consists of a ground belt suitable for use with pulp, wrap Fomat yarn, High density Pulper Kadant Lamort, Trommel and Separplast combined with Kadant Lamort pulper, pulper drain pump, pulper drain tank, agitator for exhaust pulper, HD cleaners, stan pipe inlet refining, pump stand pipes, two 26 inch Bruno refiners, mixing vat and machine vat in reinforced concrete with relative agitators and pumps. On the paper machine line there is also a pulp treatment line which is consisting of a CH7 purifier and a Screen One always Kadant Lamort with his dilution, washing and thickening systems. The fibre of the pulp line thickened it is then fed into the refining area following the same path as the fibre virgin. Included in the agreement is a steel vat of at least 60 cubic meters stainless steel including pump and dedicated agitator not indicated in the wash-out of the graphic attachments
The water treatment system
It is made up of a flotator, it can treat about 10,000 l / min of water, the type installed is a high quality unit (the manufacturer is the Krofta company). Leaving the flotator A Bellandi filter was installed to improve but above all to stabilise consistency quality of the water produced. At the process level for pulper and UTM dilutions comes used all white water coming from the submachine. For the splash water a medium and low pressure CWW water is used, for high pressure spraying and for the seals use fresh water. The overflow of the CWW tank is sent to the sump tank which then flows into the drain. All the water collection grids of the machine floor and basement room, through the same sump are conveyed in the final factory discharge.
The approach system
The silos, the channel and the pipe are made of concrete, the fan pump has one flow rate and one prevalence consistent with productions and consistencies. The fan pump has a flow rate of 600 I / s at 65 mca. The second fan pump is disassembled and not used, the two selectors are from Recard with 1200 mm basket the maximum flow rate of 60,000 I / min.
- The compressed air system
- The compressed air system consists of a centralised system for paper machine with various
- compressors, tanks and dryers. the list of compressors is attached to this letter
- relation. The plant consists of:
- Alternative compressors
- Screw compressor.
- Dryers
- Filters
- various storage tanks.
- The piping line is partly circular and partly branched
The vacuum system
The vacuum system is a classic vacuum system with liquid ring pumps in circuit closed without open circuit evaporative tower; n. 3 pumps two for the press and one for the drawers. The vacuum is separated with different vacuum levels for press and drawers. The vacuum pumps are from the Nash Denver Company type 904R. Stock is
present a fourth Nash Denver type 904R pump.
Boiler and Steam System paper machine
It is a classic system with direct flame boiler of 8370 kW kcal / h, for pressure of maximum of 15 bar.
The steam and condensate system is a classic Aerothermic Fomat system, with control of
pressure on the Yankee using thermo compressor and self valve, control of level on the barrel and speed control by damp and blow through valves on the steam of condensate barrel flash. The condensate is pumped directly into the boiler with high pressure pumps demi water has its own circuit with pressurised degasser heated by the steam of the boiler through a small diameter pipe.
The electrical system
The plant consists of an Enel MT 10 kV arrival substation. 3 switches for the three lines a 10 KV for the arrival at the trafo of the three MV / LV substations. The cabins are as follows; cabin of paper machine, pulp preparation cabin. The drives affect the following users; there Fan pump, the continuous machine and rewinder, are in direct current the ribo are in AC. The electrical substation rooms are properly sealed and are equipped with conditioning system only for the paper machine cabin. The supervision system of the plant is split between PM1 and paper machine between both plants and does not reach 3000 I / 0.
Both plants are equipped with the DCS paper quality control system Fomat with nuclear and infrared source of 2013 for paper machine. In the Pulpers cabin are low LV switchboards
The air conditioning system for paper machine electrical substations
The cabins are equipped with an air conditioning system consisting of the following components e
groups:
Hydronic refrigeration unit with two skroll compressors with a capacity of 160 kW AHU with all external air with air conditioning battery and regulation system Pump groups, tanks and pipes and electrical system for vector adduction cold from refrigeration unit to AHU.
System of channels and vents for air distribution inside the paper machine cabin