GB1486201A - Tobacco dryer controller - Google Patents

Tobacco dryer controller

Info

Publication number
GB1486201A
GB1486201A GB40097/74A GB4009774A GB1486201A GB 1486201 A GB1486201 A GB 1486201A GB 40097/74 A GB40097/74 A GB 40097/74A GB 4009774 A GB4009774 A GB 4009774A GB 1486201 A GB1486201 A GB 1486201A
Authority
GB
United Kingdom
Prior art keywords
dryer
set point
flow
tobacco
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB40097/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrial Nucleonics Corp
Original Assignee
Industrial Nucleonics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industrial Nucleonics Corp filed Critical Industrial Nucleonics Corp
Publication of GB1486201A publication Critical patent/GB1486201A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/10—Roasting or cooling tobacco

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

1486201 Automatic control INDUSTRIAL NUCLEONICS CORP 13 Sept 1974 [15 Oct 1973] 40097/74 Heading G3N A tobacco dryer system is controlled by deriving control signals for controlling the heat transfer surfaces of the dryer and the flow-rate of a drying gas through the tobacco. As shown, moist tobacco 11 is fed via a belt weigher 12 to a rotary drum dryer 13, through which flows a countercurrent of drying air from a heat source 22, and the walls of which are heated by steam flow from a source 18. The dried tobacco passes on conveyer 14 to a cooler 15 and subsequently, on a conveyer 16, transferred to a storage bin 17. Transducers 33, 34, 36, sense the weight W1, temperature T1 and moisture M1 of the tobacco being fed to the dryer and the derived signals together with a set point exit temperature signal T2S, and a set point signal OMR, representing moisture of the tobacco leaving the dryer, are fed to a process control computer 31. The computer initially calculates 1) the dryer duty, as a function of W1, M1 and OMR, 2) the heat energy change induced by the dryer as a function of W1, T1, T2S and the specific heat of tobacco CPT, which is derived from a look-up table relating moisture to CPT; and 3) bone dry weight from M and W1. The computer responds to these calculations to derive set point signals for air-flow rate and dryer temperature to optimize dryer performance. Alternatively, the set points can be derived from model equations for the dryer. It is stated that computer 31 can be digital or analogue. The dryer temperature and air-flow set points are modified in dependence on measured values from transducers 37 and 35 respectively. The exit temperature signal T2 from transducer 35 is compared in node 61 with set point T2S and the error modified by a factor K2, relating air-flow to temperature, in a multiplier 62, and added to the computer flow-rate set point in a summator 63. The modified flow-rate set point is used in a P.I.D. control loop 53, 52, 48, 38 for a valve 25, in the conduit 26 from the dryer. The inlet pressure of the air-flow from the source 22 is controlled by a P.I.D. controller 46 responsive to the comparison of a signal from a pressure transducer 44 and a set point P2S. A moisture signal from the transducer 37 is compared with a moisture set point M3S and modified by a factor K I which is added to the computed dryer temperature set point in a summator 66. The modified set point is used as a reference for a P.I.D. controller 47, 49, 39, 50 for the steam flow from the source 18.
GB40097/74A 1973-10-15 1974-09-13 Tobacco dryer controller Expired GB1486201A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US406282A US3905123A (en) 1973-10-15 1973-10-15 Method and apparatus for controlling a tobacco dryer

Publications (1)

Publication Number Publication Date
GB1486201A true GB1486201A (en) 1977-09-21

Family

ID=23607297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40097/74A Expired GB1486201A (en) 1973-10-15 1974-09-13 Tobacco dryer controller

Country Status (3)

Country Link
US (1) US3905123A (en)
CA (1) CA1004318A (en)
GB (1) GB1486201A (en)

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CN103844338A (en) * 2014-03-18 2014-06-11 龙岩烟草工业有限责任公司 Process air flow control system and method for air flow cut tobacco direr
CN110876480A (en) * 2019-09-06 2020-03-13 长沙学院 Modeling method for dry tail process of cut tobacco drying process of drum-type cut tobacco dryer
CN111427322A (en) * 2020-04-20 2020-07-17 浙江中烟工业有限责任公司 Intelligent cooling moisture control system for silk making and drying cylinder based on machine learning algorithm
CN111728253A (en) * 2020-07-06 2020-10-02 河南中烟工业有限责任公司 Control method and system for tobacco airflow drying strength
CN112931913A (en) * 2021-03-18 2021-06-11 河南中烟工业有限责任公司 Control method for air-flow type cut stem drying outlet water content
CN114371747A (en) * 2021-12-09 2022-04-19 华东交通大学 External driving circuit of tobacco leaf baking automatic control system
CN114532568A (en) * 2022-03-29 2022-05-27 河南中烟工业有限责任公司 Moisture control method for tobacco shred making and drying machine

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DE2904308C2 (en) * 1979-02-05 1986-10-23 Hauni-Werke Körber & Co KG, 2050 Hamburg Method and arrangement for drying tobacco
DE2724037A1 (en) * 1977-05-27 1978-12-07 Hauni Werke Koerber & Co Kg DEVICE FOR DRYING A CONTINUOUSLY SUPPORTED TOBACCO STREAM
DE2747232B2 (en) * 1977-10-21 1980-05-08 Fa. Wilh. Quester, 5000 Koeln Control process for the continuous treatment of bulk materials to change their physical properties
US4170073A (en) * 1977-12-01 1979-10-09 Kay-Ray, Inc. Wide dynamic range multi-zone drying method and apparatus for controlling product moisture
GB2062203B (en) * 1979-10-25 1984-08-30 Tobacco Res & Dev Drying of tobacco products
US4522214A (en) * 1980-01-14 1985-06-11 Philip Morris Incorporated Method and apparatus for controlling a cigarette maker to produce a cigarette rod with predetermined moisture content
US4326542A (en) * 1980-01-14 1982-04-27 Philip Morris Incorporated Firmness control in a cigarette maker
DE3102352A1 (en) * 1980-02-28 1982-02-25 Hauni-Werke Körber & Co KG, 2050 Hamburg Process for the drying of tobacco conveyed in a continuous flow through a drying zone and drying conveyor for this
US4513759A (en) * 1981-07-07 1985-04-30 Hauni-Werke Korber & Co. Kg Apparatus for expelling moisture from tobacco or the like
US4487577A (en) * 1982-10-27 1984-12-11 Lecorp, Inc. Adaptive control for thermal dryer
JPS6024171A (en) * 1983-07-21 1985-02-06 日本たばこ産業株式会社 Controller of moisture and temperature in tobacco moisture conditioning machine
JPS6089677A (en) * 1983-10-20 1985-05-20 日本たばこ産業株式会社 Method of controlling temperature of drier
US4696115A (en) * 1986-07-22 1987-09-29 Nabisco Brands, Inc. Method and apparatus for drying wet particulate material to a predetermined uniform moisture content
GB8803380D0 (en) * 1988-02-13 1988-03-16 Gbe International Plc Rotary drier control by adjustment of air flow/air humidity
DE3936008C2 (en) * 1989-10-28 1994-06-16 Motan Plast Automation Ag Cham Process for drying material, in particular plastic, and device for carrying out such a process
ES2055844T3 (en) * 1990-10-17 1994-09-01 Garbuio Spa ROTATING CONDITIONING DRUM, IN PARTICULAR FOR DRYING TOBACCO.
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DE4204771B4 (en) * 1992-02-18 2006-01-12 Hauni Maschinenbau Ag Method and arrangement for operating a steam-heated dryer
US5431175A (en) * 1994-01-26 1995-07-11 Beckett; John M. Process for controlling wet bulb temperature for curing and drying an agricultural product
US6586661B1 (en) * 1997-06-12 2003-07-01 North Carolina State University Regulation of quinolate phosphoribosyl transferase expression by transformation with a tobacco quinolate phosphoribosyl transferase nucleic acid
DE19751525C2 (en) * 1997-11-20 2003-02-13 Bat Cigarettenfab Gmbh Method and device for controlling the initial moisture content of tobacco
JP2004507250A (en) * 2000-08-30 2004-03-11 ノース・キャロライナ・ステイト・ユニヴァーシティ Transgenic plants containing molecular decoys that alter protein content
CA2466865C (en) * 2001-11-26 2008-12-23 Japan Tobacco Inc. Air flow dryer for granular material
CN1305418C (en) * 2002-03-14 2007-03-21 日本烟草产业株式会社 Raw material moisture control method and moisture control machine
ITBO20030130A1 (en) * 2003-03-10 2004-09-11 Gd Spa METHOD OF CONTROL OF AN AUTOMATIC MACHINE FOR THE PROCESSING
WO2005041151A2 (en) * 2003-10-02 2005-05-06 Vector Tobacco Ltd. Tobacco product labeling system
NZ564025A (en) 2005-05-11 2012-03-30 Vector Tobacco Inc Reduced risk tobacco products and methods of making same
ITVE20050051A1 (en) * 2005-10-17 2007-04-18 Comas Costruzioni Macchine ROTARY DRYER FOR TOBACCO IN LEAF, IN STRIPS AND CHOPPER.-
WO2008083703A1 (en) * 2006-12-28 2008-07-17 Jochen Zingelmann Method for drying solid and/or liquid waste materials
US20100206317A1 (en) * 2007-09-28 2010-08-19 Vector Tobacco, Inc. Reduced risk tobacco products and use thereof
DE102008047168A1 (en) * 2008-09-15 2010-03-25 Dieffenbacher Gmbh + Co. Kg Process and installation for screening and drying of spreading material in front of a spreading machine in the course of the production of material plates
CN102370240A (en) * 2010-08-17 2012-03-14 福建中烟工业有限责任公司 Method for transferring rotary drum cut leaf drying parameter
CN102090704B (en) * 2010-09-21 2013-04-03 龙岩烟草工业有限责任公司 Method for improving batch procedure capability of tobacco shred making process
CN103256806B (en) * 2012-02-20 2015-09-02 艾默生电气公司 For the apparatus and method of drying material
BR102012026521A2 (en) 2012-10-16 2014-09-30 Souza Cruz Sa TOBACCO TREATMENT PROCESS FOR THE DEVELOPMENT OF ORGANOLEPTICALLY DIFFERENTIATED PROPERTIES, ITS USE AND SMOKING PRODUCT
CN103365211A (en) * 2013-06-19 2013-10-23 浙江中烟工业有限责任公司 Loosening and wetting moisture control device
DE102013221663A1 (en) * 2013-10-24 2015-04-30 Hauni Maschinenbau Ag Device and method for releasing tobacco in a plant of the tobacco processing industry
CN103610227B (en) * 2013-12-09 2015-04-15 中南大学 Cut tobacco dryer head and tail section process variable optimizing control method
CN104082843B (en) * 2014-03-29 2015-12-30 贵州大学 The heat classification cycle control method of air energy tobacco roasting system and device thereof
CN104146333B (en) * 2014-07-16 2016-03-23 云南农业大学 The baking method of flue-cured tobacco cultivars NC297 draws in a kind of U.S.A
CN104273646B (en) * 2014-09-28 2016-04-27 上海烟草集团有限责任公司 Even feeding spraying humidification moisture control subsystem
CN104432453B (en) * 2014-11-13 2016-05-11 山东中烟工业有限责任公司 A kind of control method of hot blast drum temperature
CN106998785B (en) * 2014-12-16 2019-01-29 菲利普莫里斯生产公司 Equipment for producing the casting web for the tobacco-containing material that homogenizes
CN106174671A (en) * 2015-05-05 2016-12-07 中国烟草总公司福建省公司 A kind of bulk curing barn deepens tobacco leaf color baking process
CN105707974A (en) * 2015-12-30 2016-06-29 河南中烟工业有限责任公司 Cigarette production process stability monitoring method
CN106307594B (en) * 2016-10-12 2017-11-10 湖北中烟工业有限责任公司 One kind is used for tobacco storage leaf warming and humidifying machine and tobacco storage leaf warming and humidifying method
CN106418640B (en) * 2016-11-22 2017-09-01 河南农业大学 It is a kind of to prevent the mildew and rot method of tobacco leaf in air-flow rising-type bulk curing barn baking process
WO2018132822A1 (en) * 2017-01-16 2018-07-19 Envirostar, Llc Dryer control systems and methods
US11369119B2 (en) * 2017-01-25 2022-06-28 David Sandelman Vapor pressure control system for drying and curing products
CN106773657B (en) * 2017-03-28 2019-08-09 中国烟草总公司郑州烟草研究院 A kind of optimising and adjustment method of roller drying unstable state process head material and tailing stage
CN108175121B (en) * 2018-01-11 2020-12-29 上海烟草集团有限责任公司 Method/system for self-correction of parameters, computer readable storage medium and apparatus
CN108926027B (en) * 2018-08-07 2021-07-23 福建中烟工业有限责任公司 Method and device for drying tobacco shreds by using drum dryer
CN109259291B (en) * 2018-11-19 2020-10-02 江苏科技大学 Numerical method for predicting heat and mass transfer rule of tobacco shreds in roller tobacco dryer
CN109674079A (en) * 2018-12-28 2019-04-26 红塔烟草(集团)有限责任公司 It is a kind of to use roller-air-flow stem drying means
CN110973682B (en) * 2019-12-10 2021-09-14 红塔烟草(集团)有限责任公司 Method for calculating flow matching performance between threshing and redrying processes
CN112352992A (en) * 2020-10-21 2021-02-12 中国烟草总公司河南省公司 Multi-gear temperature and humidity controller for tobacco leaf baking
CN112568482B (en) * 2020-11-18 2023-02-24 青岛海信日立空调系统有限公司 Tobacco dryer and tobacco dryer control method
CN114009820B (en) * 2021-10-25 2023-08-11 红云红河烟草(集团)有限责任公司 Multichannel air supplementing device for cold room of baking machine
CN114403486B (en) * 2022-02-17 2022-11-22 四川大学 Intelligent control method of airflow type cut-tobacco drier based on local peak value coding circulation network

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103844338A (en) * 2014-03-18 2014-06-11 龙岩烟草工业有限责任公司 Process air flow control system and method for air flow cut tobacco direr
CN110876480A (en) * 2019-09-06 2020-03-13 长沙学院 Modeling method for dry tail process of cut tobacco drying process of drum-type cut tobacco dryer
CN110876480B (en) * 2019-09-06 2021-08-13 长沙学院 Modeling method for dry tail process of cut tobacco drying process of drum-type cut tobacco dryer
CN111427322A (en) * 2020-04-20 2020-07-17 浙江中烟工业有限责任公司 Intelligent cooling moisture control system for silk making and drying cylinder based on machine learning algorithm
CN111427322B (en) * 2020-04-20 2021-02-19 浙江中烟工业有限责任公司 Intelligent cooling moisture control system for silk making and drying cylinder based on machine learning algorithm
CN111728253A (en) * 2020-07-06 2020-10-02 河南中烟工业有限责任公司 Control method and system for tobacco airflow drying strength
CN112931913A (en) * 2021-03-18 2021-06-11 河南中烟工业有限责任公司 Control method for air-flow type cut stem drying outlet water content
CN112931913B (en) * 2021-03-18 2022-04-19 河南中烟工业有限责任公司 Control method for air-flow type cut stem drying outlet water content
CN114371747A (en) * 2021-12-09 2022-04-19 华东交通大学 External driving circuit of tobacco leaf baking automatic control system
CN114371747B (en) * 2021-12-09 2023-07-14 华东交通大学 Peripheral driving circuit of tobacco leaf baking automatic control system
CN114532568A (en) * 2022-03-29 2022-05-27 河南中烟工业有限责任公司 Moisture control method for tobacco shred making and drying machine

Also Published As

Publication number Publication date
US3905123A (en) 1975-09-16
CA1004318A (en) 1977-01-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee