• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method to control the burning of liquor varying in its chemical consistency at the recovery boiler is disclosed. Considering the burning, for accomplishing the suitable size of the droplet in the recovery boiler, the viscosity of liquor will be controlled on the basis of density measurement, which, however, has proved to be an unreliable and slow way. To overcome these disadvantages the feeding parameters are controlled directly on the basis of the measured viscosity of liquor.
    公开号:SU1461374A3
    申请号:SU823445628
    申请日:1982-05-31
    公开日:1989-02-23
    发明作者:Пааво Киимапаинен Йорма Хуету；Юхани Сиеккинен；Калеви Сиканен
    申请人:Ой Тампелла Аб (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to the pulp and paper industry and can be used to control the process of burning liquor with a varying consistency in a soda recovery unit.
    The aim of the invention is to increase the efficiency of control.
    Heat and chemicals used in cooking liquor are recovered for use in pulp production.
    In the burned in sodoregleration unit contains about 40%. moisture that evaporates before droplets that fall to the bottom of the co-regeneration unit and collide with its surface.
    For the most efficient operation of the recovery unit, it is necessary to obtain an optimal droplet size of the liquor injected through the nozzles into the furnace of the unit. The size of the drop is not determined by the condition of evaporation of moisture. With significant droplet sizes, most of the moisture evaporates from the surface of the glezer at the bottom of the recovery unit, which leads to an increase in the yield of sulfur dioxide in the flue gases leaving the unit. If the size of the droplet is small, then the moisture evaporates in front of the sleeper, which results in a higher quill content in the flue gas.
    The droplet size is related to the viscosity of the liquor, which can be selected as a monitored parameter. By measured value
    the liquor viscosity is controlled by the liquor squeezing process. .
    i
    Viscosity changes with change
    consistency of both solids in the liquor and chemical consistency.
    FIG. Figure 1 shows the change in viscosity with changes in the content of dry solid particles; . 2 shows the scatter of the viscosity of the woods (slice A) and the main fibers (section B) of wood with a different content of dry parts in FIG. 3 - deviations of the quality of the combusted liquor in time; on
    FIG. 4 - a device that implements the proposed method.
    The method is carried out as follows.
    The magnitude of the change in the viscosity of the liquor burned in the furnace of the recovery boiler 1, controlled by a viscometer 2, immediately before regulation, goes to regulator 3. From regulator 3, the signal is sent to actuators 4, which change the flow of liquor, the pressure from which liquor is supplied to the regenerative the viscosity, which can be regulated, for example, by changing the steam flow rate in the heater 5. The viscosity change is also obtained by mixing the liquor with a flammable liquid having a viscosity that is different from lye.
    FIG. 3, position A indicates the solids content, position B, viscosity after mixing in the tank, and position C, viscosity before feeding to the mixing tank. Section E illustrates the sequence of change with replacement of birch liquor with pine liquor.
    The large change in viscosity shown in FIG. 3, which takes place in the nozzles for spraying liquor, causing sudden disturbances in the operation mode of the unit 1, is eliminated by adjusting the viscosity of the burnt liquor by preheating in block 5 by controlling the viscosity with a viscometer, set to the value D. changing the nozzle opening of the unit 1.
    权利要求:
    Claims (3)
    [1]
    1. A process control method for a liquefied liquor with a varying consistency in a sodoregeneration unit by measuring the physical parameter of the liquor, characterized in that, in order to increase the control efficiency, the viscosity of the liquor is selected as a physical parameter, depending on the value of which the liquor consumption is adjusted viscosity and pressure, with which the liquor is fed into the sodoregeneration boiler, the bone is measured immediately before the adjustment.
    [2]
    2. The method according to claim 1, of which the liquor consumption is controlled by changing the nozzle opening of the recovery unit.
    31461374
    [3]
    3. The method according to claim 1, a different unit, is controlled by the displacement of u y and i with the fact that the viscosity is just with a flammable liquid, viscosity: the lock supplied to the soda recovery is different from the liquor viscosity.
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    ; Compiled by G. Plotnikova
    Editor G. Volkov Tehred L. Oliynyk Proofreader. Girn to
    Order 548/59
    Circulation 330
    VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5
    Production and printing company, Uzhgorod, st. Project, 4
    20
    RUM
    Subscription
    类似技术:
    公开号 | 公开日 | 专利标题
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    Uronen et al.0|COMPUTERIZATION OF RECOVERY BOILERS-THE WAY AHEAD?
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    同族专利:
    公开号 | 公开日
    SE8203294L|1982-12-02|
    JPH0152657B2|1989-11-09|
    FI811679A0|1981-06-01|
    FI64409C|1983-11-10|
    FR2506898A1|1982-12-03|
    FR2506898B1|1988-11-10|
    ZA823318B|1983-03-30|
    JPS57210217A|1982-12-23|
    CA1200055A|1986-02-04|
    FI64409B|1983-07-29|
    BR8203222A|1983-05-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2630819A|1948-06-09|1953-03-10|Austin S Norcross|Method and apparatus for controlling the viscosity of a processing liquid|
    DE1517164A1|1965-07-28|1969-09-04|Bergwerksverband Gmbh|Process for incinerating sulphite liquor in combustion chambers|
    CH556000A|1973-03-14|1974-11-15|Heberlein & Co Ag|PROCESS FOR INCINERATING WASTE LIQUIDS CONTAINING WATER AND ADDITIONAL BURNERS AT INCINERATION PLANT TO PERFORM THE PROCESS.|
    US3977427A|1975-09-18|1976-08-31|John Zink Company|Control of the viscosity of fuel oil for burners|
    FR2366516B1|1976-10-04|1979-01-12|Ferbeck Et Vincent Ets|
    US4249885A|1978-07-20|1981-02-10|Vapor Corporation|Heavy fuel oil nozzle|
    FR2445931B2|1978-07-21|1981-07-17|Citroen Sa|FI70270C|1985-03-18|1986-09-15|Tampella Oy Ab|SAETT ATT REGLERA INMATNINGS- OCH FOERBRAENNINGSFOERHAOLLANDENA AV FOERBRAENNINGSLUTAR VARIERANDE TILL SIN KEMISKA OCH PHYSIKISISKA KOMPOSITION FOER FOERBRAENNING I EN SODAPANNA|
    FI73474B|1985-04-25|1987-06-30|Tampella Oy Ab|SAETT ATT AOTERVINNA VAERME OCH KEMIKALIER FRAON AVLUT.|
    US4768469A|1985-07-31|1988-09-06|Kabushiki Kaisha Toshiba|Operation control apparatus for recovery boilers|
    FI75615C|1985-11-29|1991-08-26|Ahlstroem Oy|FOERFARANDE FOER SAENKNING AV SVARTLUTENS VISKOSITET.|
    JP2941831B2|1989-01-10|1999-08-30|バブコツク日立株式会社|Dust scattering prevention device for black liquor recovery boiler|
    DE9108106U1|1991-07-02|1992-10-29|Siemens Ag, 8000 Muenchen, De|
    DE4226487C1|1992-08-11|1994-01-27|Noell Dbi Energie Entsorgung|Dewatered clarification sludge feed to disposal reactor - includes temp. pressure treatment before entry into reactor then atomisation within reactor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI811679A|FI64409C|1981-06-01|1981-06-01|SAETT ATT STYRA FOERBRAENNINGEN AV EN TILL SIN KEMISKA KOMPOSITION VARIERANDE BRAENNLUT I SODAPANNAN|
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