• 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:
    The invention relates to a method of regulating, for the purpose of burning soda-ash in a recovery boiler furnace, the feeding-in or combustion conditions of concentrated spent liquors of varying chemical and physical properties by measuring some physical property of a liquor fed into the recovery boiler furnace and by regulating the feeding-in and combustion conditions directly on the basis of the thus measured physical properties. According to the invention, the maximum swelling, upon heating, of a dry-matter particle of the liquor fed into the recovery boiler furnace is measured. On the basis of this measurement the temperature, pH value, or injection pressure of the liquor fed into the furnace, or the height of the injection point or the direction of injection, or the feeding of air into the furnace is adjusted directly on the basis of the maximum swelling measurement.
    公开号:SU1639435A3
    申请号:SU864027125
    申请日:1986-03-17
    公开日:1991-03-30
    发明作者:Хюетю Паало；Уппсту Эрик；Сайха Эрик
    申请人:Ой Тампелла Аб (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a method for controlling the combustion process of concentrated waste liquors with different chemical and physical properties in a soda calcination furnace.
    The purpose of the invention is to increase the efficiency of the combustion process.
    FIG. 1 is a schematic diagram of the supply and control of the sulphate-sulphite mixture during combustion; in fig. 2 is a schematic diagram of the supply and control of liquor by burning the pH of the liquor; in fig. 3 is a change in the expansion of a dry matter particle, as determined in laboratory experiments for two types of liquor: sulfite and sulfate; in fig. 4 — Liquor expansion as a function of pH.
    According to the invention, the maximum expansion during heating of the dry particle of liquor supplied to the soda ash calcination furnace is measured, and the conditions for loading and / or burning are adjusted directly based on the measurement of maximum expansion.
    Loading conditions can be set based on the measurement of maximum expansion by adjusting the chemical or physical parameters of the concentrated liquor. Chemical properties of concentrated otobo with
    WITH ъ
    coke

    CN
    secret liquor can be adjusted, usgananlip pH value or the ratio of components in a mixture of liquor supplied to the soda calcining furnace.
    The introduction of the liquor into the soda calcination furnace 1 is adjusted based on the ratio in the mixture of two different types of liquor; sulphate liquor flows from tank 2, and sulphite liquor via line 3, their mixture passes through heater 4 to calcination furnace 1. Liquor preheating and, therefore, droplet formation is adjustable to take into account expansion when liquor is introduced using a measuring and control loop 5, which measures the flow of sulphate liquor at location 6 and the consumption of sulphite liquor at location 7, by adjusting the heating in heater 4 based on these measurements.
    FIG. Figure 3 shows the effect of the ratio of sulfite to sulfate on the maximum expansion of the liquor as a function of the magnitude of the maximum expansion from the content of sulfite, as well as on the temperature of the liquor at its injection nozzle.
    Vp - the volume of the expanded particle of dry matter formed from a drop, and V
    volume of the initial liquor drop.
    The horizontal axis represents the percentage of sulfite in a mixture of liquor in percent, and the rest is sulfate liquor. At a certain ratio, which depends, for example, on the type of the whole (i.e. on the method of cooking and the type of plant), the expansion drastically changes, and this change has a significant effect on the burning process of the liquor in the soda calcination furnace, if not make appropriate compensation by
    regulation. The adjustment is carried out according to the dashed curve shown in FIG. 3; The curve shows the temperature of the mixture measured at the nozzle under the given conditions as a function of OTHO sulfite to sulfate in the mixture. In FIG. Figure 4 shows the expansion of the liquor as a function of pH. The pH of the liquor is measured in at least one place in the liquor supply line and introduced into the control system. If, according to the proposed method, one or more of the Physical parameters of the concentrated waste pjelok that affect the expansion of the drop is used directly as an adjustment parameter, then the chemical composition deviations do not interrupt the burning process in the soda calcining furnace. According to the proposed method, kiln burning can be adjusted based on measurements taken directly on the liquor, or based on the ratio of the mixture of liquors, using liquor expansion or liquors as a calibration parameter.
    The maximum expansion of the liquor can be determined, for example, by photographing the expansion of the droplet in a laboratory furnace and measuring the ratios of the diameters of the droplets by photographing, measuring the burning time of a specific size droplet in the furnace in which the constant temperature occurs (the burning time is directly proportional to the maximum expansion) as well as in other ways.
    权利要求:
    Claims (3)
    [1]
    1. The method of controlling the process of burning concentrated waste liquors with different chemical and physical properties in a soda ash kiln by measuring the physical parameter of the dry matter of the concentrated liquor and adjusting the temperature and pressure of the liquor to the kiln depending on the temperature of the liquor into the kiln, air supply to the kiln, about tl and h and u and with the fact that, in order to increase the efficiency of the process, the maximum expansion of Dry matter obtained in a soda calcination furnace as a result of pyrolysis of a dried drop of concentrated spent liquor.
    [2]
    2. A method according to claim. Characterized in that the magnitude of the maximum expansion of the dry matter particle is maintained by adjusting the pH of the liquor supplied
     in a soda calcination oven.
    [3]
    3. The method according to claim 1, which differs from the fact that the magnitude of the maximum expansion of a dry particle is
    The light is maintained by adjusting the liquor supplied to the calcination furnace by the ratio of the component to the mixture of soda.
    thirty
    25 20120
    15 If5 U - 110 5-105
    ABOUT
    -I (j.
    W 90 80 70 60 50 40 30 20 10 0% si
    Fig.z
    &
    1
    7
    /
    FIG. 2
    Z
    79
    ffitlS. U
    eleven
    13
    类似技术:
    公开号 | 公开日 | 专利标题
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    Brown et al.1983|Mathematical modeling and computer control of lime kilns
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    同族专利:
    公开号 | 公开日
    FI851071A|1986-09-19|
    BR8601461A|1986-12-09|
    FI851071A0|1985-03-18|
    ZA861421B|1986-10-29|
    US4891097A|1990-01-02|
    JPH0337089B2|1991-06-04|
    FI70270B|1986-02-28|
    SE465581B|1991-09-30|
    JPS61213509A|1986-09-22|
    FR2578866B1|1994-01-07|
    SE8601217D0|1986-03-14|
    FR2578866A1|1986-09-19|
    FI70270C|1986-09-15|
    SE8601217L|1986-09-19|
    CA1272856A|1990-08-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4042328A|1976-04-06|1977-08-16|Seymour George W|On-line analyzer|
    FI64409C|1981-06-01|1983-11-10|Tampella Oy Ab|SAETT ATT STYRA FOERBRAENNINGEN AV EN TILL SIN KEMISKA KOMPOSITION VARIERANDE BRAENNLUT I SODAPANNAN|
    US4498955A|1983-09-01|1985-02-12|Combustion Engineering, Inc.|Control of active alkali in black liquor|FI82081C|1989-03-31|1991-01-10|Tampella Oy Ab|SAETT ATT REGLERA INMATNINGS- ELLER FOERBRAENNINGSFOERHAOLLANDENA FOER BRAENNLUT MED VARIERANDE KEMISKA OCH FYSIKALISKA EGENSKAPER VID FOERBRAENNING I SODAPANNA.|
    DE9108106U1|1991-07-02|1992-10-29|Siemens Ag, 8000 Muenchen, De|
    DE9108104U1|1991-07-02|1992-10-29|Siemens Ag, 8000 Muenchen, De|
    US8827542B2|2008-07-28|2014-09-09|Ganado Technologies Corp.|Apparatus and method to feed livestock|
    US8746959B2|2007-07-26|2014-06-10|Ganado Technologies Corp.|Apparatus and method to feed livestock|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI851071A|FI70270C|1985-03-18|1985-03-18|SAETT ATT REGLERA INMATNINGS- OCH FOERBRAENNINGSFOERHAOLLANDENA AV FOERBRAENNINGSLUTAR VARIERANDE TILL SIN KEMISKA OCH PHYSIKISISKA KOMPOSITION FOER FOERBRAENNING I EN SODAPANNA|
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