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CNA
By using the pulping processof the invention, the device investment can be reduced by about 40% compared with the prior art and the pulping process can save about 20% of energy, thus reducing the production cost. High concentration treatment is used to treat fiber materials so as to reduce the dosage of water for pulping and the wastewater treatment load and benefit the environment protection.
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(PDF) Selective enzyme impregnation of chips to reduce ...
Results showed that at 100 ml Canadian standard freeness (CSF), energy savings of 32% could be obtained by impregnating the spruce chips with the enzymatic solution at the pH of the chips without ...
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01. Paper Industry
concentration about 3 to 5 percent. Highspeed mechanical churning for 30 to 60 minutes reverts wastepaper back to the state of pulp. Heating or chemical substances are sometimes applied to facilitate defiberization. A new type of pulper that can continuously process wastewater with a high concentration (12 18 percent) has been
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Pulping Process
These high quality pulps are mainly used for higher quality paper production, such as office paper. Kraft pulping is the most common pulping process used by several plants in the world for fiber. In this process, the wood chips are first presteamed to soften them and force out any trapped air. Then they are combined with a highly alkaline solution, called white liquor, which contains ...
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ZG series drum type hydrapulper, drum type hydrapulper ...
It is used for continuous breaking and coarse screening of the waste paper materials in the high concentration. Features. 1. The continuous breaking in high concentration(14`~18%), saving the energy. 2. The breaking and coarse screening integrated, optimizing the pulping technologies. 3. The gentle defibering, high impurity removal rate. 4 ...
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Thermomechanical Pulping Process
The thermomechanical pulping process uses refiners to defiber chips that are softened in a presteaming vessel. The refiners use large amounts of electrical power, which is converted to heat and steam through friction. This steam is exhausted from the refiner along with the chips. Exhaust steam can be recovered and used as a secondary heat source. The TMP process often uses two refiners in ...
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ZDSG highconcentration hydrapulper, high consistency ...
ZDSG highconcentration hydrapulper is mainly used for defibering waste paper in high concentration in deinking process. TEL: Mail:jianpo Inquiry. Zhengzhou Leizhan Technology Paper Machinery Co., Ltd. HOME; PRODUCTS. Conveying and Bale Breaking System; BFW Series Chain Conveyor; SBJ Series Waste Paper Bale Breaker; Pulping equipment.
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used pulp paper machinery, Refiner Equipment, Screening ...
used pulp paper machinery, Refiner Equipment, Screening Equipment | ... which usually exchanges its remaining energy with clear water through the heat exchanger, hot water is used for other process needs. Clean water is heated in the heat exchanger, which will produce scale on the inner wall of the exchanger. After a long time, the tubes in the heat exchanger are blocked by the mixture of ...
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Micro Star Machines | Pulping and paper making equipment ...
Phone: + 92 (0) 41 202 1153 / 4 Mobile: + 92 (0) 300 727 0087 Email: anaspiracha anas
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The ChlorAlkali Industry
mining, sulfite paper pulping, chemical sodium compounds, textiles processing The Caustics Chain Figure 61. ChlorAlkali Products Chain (CMA 1998) About 30 percent of the sodium hydroxide produced is used by the organic chemical industry and about 20 percent is consumed by the inorganic chemical industry for neutralization and offgas scrubbing, and as an input into the production of various ...
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The Pulp and Paper Making Processes
generation of energy used in pulp and paper mills. As the chemistry of lignin becomes better understood, what is now mostly a waste product used for fuel (some is converted to chemical products) could become a valuable feed stock for new chemical products. The pulping process is aimed at removing as much lignin as possible without sacing fiber strength, thereby freeing the fibers and ...
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Review: Reduction of energy consumption in TMP refining ...
It should be noted that the blade refiner in our experiments has a significantly higher energy demand than industrial or pilotscale disc refiners ( Gorski et al. 2010 ; Johansson et al. 2011 ...
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Kadant Fiber Processing
Fiber processing is part of the industrial processing segment within Kadant. As a global supplier of highvalue, critical components and engineered systems used in and recycled paper stock preparation and paper machine approachflow appliions, we help our customers reduce their input costs and improve efficiency through innovative products and technologies.
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An appliion study of autohydrolysis pretreatment prior ...
· It has become one of the key highyield pulping technologies, possessing advantageous features of raw materials saving and environmental friendliness. However, during the highyield pulping process, some carbohydrates are still released from the raw material into the process liquor. The pulping yield for this kind of highyield pulping process is above 85%, which means that about 15% of ...
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Modifying the Refining Energy Consumption of Chemi ...
When mechanical pulps were produced from these pre treated chips, savings in electrical refiner energy could be achieved. For southern yellow pine (Pinus taeda), the electrical refiner energy ...
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Qingdao Conqinphi Energy Tech Co.,Ltd
Qingdao Conqinphi Energy Tech Co.,Ltd is a system integration company commits to innovative technologies of energy saving and emission reduction,and evaporation concentration crystallization equipments in the field of high efficient heat transfer technology,which integrates the RD design,manufacturing,installation,debugging and after sale service, company covers an area .
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Papermaking Components and Services | Voith
IntensaPulper IPV is a pulper that offers especially energyefficient pulping of fibers, clean recovered paper or broke in batch or continuous mode. In combination with Voith's IPV Rotor, energy savings of up to 30 % are achieved.
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Pulping operation optimization
· Because of its high organic load, black liquor is an energyrich stream that is burned in recovery boilers to produce combined heat and power. Without concentration, black liquor contains too much water to be a safe and effective fuel. That means that the higher the solids content in the liquor, the higher the operational efficiencies and the lower the loads and risk for smelt explosions in ...
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ServoNavitas
Energy saving designs spread the wood flow evenly over the segment rings. The homogeneous flow allows fiber acceleration and energy savings at levels unreachable in the past. Super feed. In large scale high consistency CD refiners, effective feeding from the flat zone to the conical zone is essential. Patented unidirectional feeding solutions ...
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Process intensifiion in mechanical pulping
with less equipment, higher yield and lower energy consumption have been developed. When the development is made in an innovative way with large effects on process performance, it is called process intensifiion (Stankiewicz, Moulijn 2002). Gourdon et al. (2015) stated that PI simply means, "using much LESS to produce MUCH more and BETTER". The concept of PI was developed during the 1980 ...
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Engineering, Pulping and Environmental Conference 2007
Effect of Sulfite, Sulfide and Hydroxide Concentrations in Mini Sulfide Sulfite ... The Appliion of Automatic Port Rodding and High Efficiency Sootblowing to Improve Recovery Boiler Run Time..... 1402 D. Young, N. Wildey, S. Youssef, P. McAllister, J. Adams Optimizing CO and NOx Emissions from Hog Fuel Boilers..... 1423 A. Walsh Induction Heat Tube Extraction for Generating Bank ReTubing ...
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Biopulping
In mechanical pulping, biopulping could reduce energy intensity by million BTUs per ton of output and could reduce various refiner improvements by million BTUs per ton of output. However, the payback period is estimated to be 30 years for biopulping, whereas it is only years for refiner improvements. In thermomechanical pulping, potential improvements range from 1
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ZDSD Series D Type Hydrapulper, Paper Pulping Equipment
1. New type energysaving VOKES rotor strengthens hydraulic circulation and fiber relief. 2. D type structure changes slurry flow ways, make contact between pulp and rotor more quick and frequent. The mechanical action is enhance, pulping time is shortened so that the capacity is improved. 3. Pulp chamber of rotor is higher than the under ...
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