2007N9@pZ

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JAPAN TAPPI JOURNAL Vol.61 No.9

September  2007  Abstracts


Perfect Retrofit on Quality Improvement at Stora Enso Kabel OMC 5

Hideomi Uchikawa
Voith Paper Automation Japan Ltd.

  The start-up of the Stora Enso Hagen Kabel OMC5 was in 1980. The applicator roll coaters with blades were changed in two steps to increase the operating speed of the OMC 5. The 2 precoaters were equipped with Voith SpeedCoaters in 1999. In 2001, as a further step, the applicator roll coaters for top coating were further supplemented by 2 Voith JetFlows.
  As part of its consistent further development, Voith Paper now supplied the new quality control technology. On February 9, 2005, the quality control system was converted and the four coaters were equipped within only three days.
  With this retrofit, the OMC5 now operates on the basis of state-of-the-art control and measuring technology.


Development and Results of Latest Energy Saving Screens
- Introduction of MAXFlow and New GranFlow -

Kazuo Aoshima
Aikawa Iron Works Co., Ltd.

  Since the resource and energy saving becomes the challenge for the pulp and paper industry, energy saving is the most important factor in the intense energy consuming industry. We have succeeded to develop two kinds new screen to meet the requirements.


Efficient Mixing of Papermaking Chemicals with TrumpJet™ System
- Without Any Fresh Water -

Jouni Matula
Wetend Technologies Ltd.
Akira Ejima
Matsubo Corporation

  Wetend Technologies Ltd has invested during past years on development of chemical and additive mixing into stock close to headbox. A TrumpJetTM jet injection and mixing system for papermaking additives eliminates completely additive post dilution with fresh water in PM Approach system process. Additives are mixed effectively into the process by exploiting circulated headbox feed stock. The system gives considerable energy savings as well as reduction of CO2 emission case by case. Overdosing of additives will be also avoided. This results to chemical savings. About 150 systems are already in operation world wide.


The Latest Turn-Up System by Water Jet (Paprima, Canada)

Makoto Matsushita
KGK Engineering Corp.

  Paper mills have been long after the turn-up efficiency improvement and subsequent paper loss reduction. Our full automatic gReel Jeth & gReel-Jet Sh turn-up system (Paprima Industries Inc., Montreal, Canada) uses 2 until of ultra high pressure water-jet cutting head (1300-1500 bar/20cc per Tune-up) which run fast (2m/sec) to their waiting position each side of the line to get the sheet expanded to its full width keeping a completely uniformed wrapping both ways from the center, immediately after the tail has got caught by a new spool with the help of an air-coanda effect of a specially designed gooseneck. Thus, gReel Jeth & gReel-Jet Sh makes it possible to execute turn-ups failure free in such a shorter time span as 2 seconds since the issure of turn-up command via DCS until the two heads come back to their park-positions. Also, its beautifully balanced and even wrapping on a spool can release the reel part from vibration and noise related problems.
  Its sales has been expanding among big scale world famous paper machines in Europe and North America, and they are quite satisfied with its overwhelmingly nice performance to cut paper loss and subsequently to improve productivity remarkably. Hereunder, we are going to explain about its structure and performance.


Improved Runnability with TopBrane

Mantijn van Leeuwen
DSM Hybrane BV

  A range of new Hyper-branched products has been introduced by DSM under the brand name TopBrane for applications in paper coating. TopBrane products show low viscosity in use, due to their hyperbranched structure and high performance at low concentration, due to their high functionality. TopBrane products can be used to improve runnability of coaters and reduce the total cost of operation. This paper shows an application example on Metered Size Press coaters for production of LWC papers. Using TopBrane enables the paper mill to effectively use more starch in the paper coating formulation or apply more coat weight without experiencing operational problems like misting, pilling and spitting. Using our TopBrane products to reduce cost can achieve a reduction of total cost of coating chemicals (binders and additives).


Learning Classifier "SmartLearn®"

Atsushi Kurosaki
Surface Inspection Systems Division, COGNEX K.K.

  The Cognex SmartLearnR is a new classification software tool set for SmartViewR web inspection system. SmartLearn was designed such that the latest learning classification technology can be combined with expert knowledge of each application. It has long been known that one single classifier cannot be optimum for every material, every process and every production line. Furthermore, learning classifiers alone do not provide the best result. SmartLearn provide the combination of the learning classification technology and real-time multi-step classifier. SmartLearn dramatically improves defect classification accuracy.


Energy Management Control System [Enemap]

Hiroto Abe and Kentaro Ohara
Energy Group, Solution Promotion Dept., ETS Development Div.,
Yokogawa Electric Corporation

  The energy management control system gEnemaph is a software package that predicts the demand for energy by the archived operational data, the weather forecast data and so on, and leads the optimal operation plan of equipments and the most effective combination of the energy such as electric power, gas, and heavy oil.
"Enemap" not only aschieves energy saving and environmental load reduction but also supports daily plant maintenance operation and an enhancement of operation management efficiency.
  This paper describes the function and the application example of "Enemap".


An Introduction of Biomass Utilization Methods of JFE Environmental Solutions
- Application of JFE-Babcock & Wilcox Volund Biomass Gasification Technology Combined Heat and Power Plant to Paper Industry -

Koji Omata and Kohei Nishimura
JFE Environmental Solutions Corporation

  Recently, effective use of the biomass has been paid attention from a point of view of the global warming prevention and recycling society formation.
  JFE Environmental Solutions Corporation has advanced a development for profit use of biomass, and now we have various types of technologies.
  In this paper, we introduce the gJFE-Babcock & Wilcox Volund Biomass Gasification Technology combined Heat and Power Planth that can contribute to the reduction of CO2 emission and the saving of fossil fuel by utilizing gas and tar converted from biomass.


New Technology of Rotary Consistency Product Uses the FieldCare System Tool for Device Condition Check

Hideo Kikuchi
Pulp & Paper Business Unit, Field Systems Division, Metso Automation K.K.

  Metso has been well known about shear force technology. With our tradition of 50 years experience the number of shipment has over 53,000 transmitters of consistency.
Our blade transmitters have set industry standards since launching of Pulp-EL, our first electronics blade transmitter back in 1977, followed with Smart-Pulp 1995, which was the first microprocessor based blade transmitter on the market with extensive calibration features.
  Therefore we announce our latest product of kajaaniROTARY and FieldCare system this time.


Semi-automatic Ream Feeding System

Atsuo Murata
Robot and Environment Div., SERVOARM Co., Ltd.

  Servoarm Co., Ltd. is an enterprising company that makes the best use of its long and cultivated hydraulic and electronic control technology to develop truly useful and problem solving devices to meet the particular needs of their customers. The companyfs primary goal is to benefit the customer by improving both their work environment and productivity with eco-friendly, labor saving devices.
  In the finishing process, many factories still depend on manual labor for sorting and feeding the reams to the wrapping process due to technical problems with existing systems and the high investment cost for fully automated systems. The newly developed Semi-automatic Ream Feeding System eliminates the need for hard physical work and offers a cost effective, labor saving production process. To truly serve our customers, we offer unique custom-made systems, designed to match their existing systems and peripheral devices.
  Although there were many problems in the ream feeding process by manual labor, the following effects and merits have been obtained:
  1j Increased productivity and operating cost cuts
  2j Workers relieved from hard manual labor
  3) Chances of occupational hazards such as backache are lessened
  4) Friendly work environment for elderly persons
  Close collaboration with our customers is the key to new developments, and we at Servoarm continuously strive to develop new and useful devices to actively serve the paper making industry.


Proposal of MARSDEN IR DRYER System

Yasuo Harikae
Industrial Machinery Dept., ITOCHU SANKI CORPORATION

  The MARSDEN GAS infrared dryer is an epoch-making, large-scale infrared rayfs heater that the Marsden Co. in the United States developed. This is a large-scale infrared rayfs heater of highly effective that uses the ceramic fiber and low pollution. This has a lot of features compared with a past infrared rays dryer and can adjust to a wide usage.
  This chapter will explain the performance and the effect of MARSDEN system that our company sells in detail.


Alkali Pre-treatment for the Bioethanol Fuel Production from Woody Biomasses
- Part1: Soda Cooking Conditions as an Alkali Pre-treatment -

Tsutomu Ikeda, Tomoko Sugimoto, Masanobu Nojiri, Kengo Magara, Shuji Hosoya and Kinji Shimada
Department of Biomass Chemistry, Forestry and Forest Products Research Institute

  Bioethanol fuel for motor vehicle use is currently produced from sugar cane and corn starch. However, the production costs of such crops in Japan are much higher than in Brazil and North America. Therefore, Japanese bioethanol fuel production from such crops is very limited. On the other hand, lignocellulosic biomasses, especially woody biomasses, are abundant resources and large amounts of low-cost woody biomasses are available for the bioethanol fuel production in Japan. Bioethanol is produced from the fermentation of glucose and some oligo sugars. However, cellulose, which is the most abundant carbohydrate in wood, is a polymer of glucose linked by s-1, 4-glucosidic bonds and cannot be fermented by yeast directly. Therefore, hydrolysis which converts cellulose to glucose is required for bioethanol fuel production from wood. In response, we have developed a new bioethanol fuel production process using alkali cooking and enzymatic hydrolysis as a pre-treatment. In this work, we discuss suitable soda cooking conditions for producing bioethanol fuel from wood.
  Sugi wood contains more lignin, but less carbohydrate than does eucalyptus wood. However, the xylose content of eucalyptus, which comes from hemicelluloses, is higher than that of sugi; therefore, the overall hexoses contents of both sugi and eucalyptus are similar. In the present study, a relationship was investigated between the lignin contents and the enzymatic digestibility of sugi soda pulps. As the lignin content decreased, the enzymatic digestibility increased. However, the enzymatic digestibility of pulps reached mostly 100% without complete lignin removal. Delignification was improved and the pulp yields were increased by the addition of 1, 4-dihydro-9, 10-dihydroxyanthracene disodium salt (AQ) to the soda cooking. Soda cooking with AQ around H-Factor (HF) 3000 were the best conditions for alkali pre-treatment of sugi for bioethanol fuel production. On the other hand, soda cooking with AQ around HF 350 were the best conditions for eucalyptus.

Keywords: bioethanol, lignocellulosic biomasses, soda cooking, AQ, pulp