• 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 control system for a fluidised bed dryer of solutions or suspensions is based on measuring the pressure drop across the perforated bottom carrying the blood. The pressure drop fluctuations are used to control the valves of the main gas inlet, of the gas branch to the classifying discharge, and of the worm feeder for the solid nuclei. This compensates for any variation of the extraneous conditions, e.g. the solids content of the solution or suspension. The stable operation of the fluidised bed results in an improved product. Used eg. for treating albumin solns.
    公开号:SU985646A1
    申请号:SU797770597
    申请日:1979-05-22
    公开日:1982-12-30
    发明作者:Хорст Бергманн；Йюрген Грюнцел；Ролф Елспас；Ханс-Йоахим Кюнне；Манфред Миттелштрас；Мерл Лотар；Заксе Йоахим
    申请人:Феб Швермашиненбау-Комбинат "Эрнст Тельманн" (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to a regulating device designed to achieve a stable operating mode in fluidized bed apparatuses in which the injected 5 solutions or suspensions are dried by a gas stream in a fluidized bed and the product is discharged through an unloading unit with a sorting effect.
    Known devices and appa- 0 Rata in which solutions or suspensions are injected and dried with hot gas in a vortex-nbsitelem movement (vykladnoe Description of the invention to the accepted Application 1241365 (GDR); vykladnoe specification of a non-accepted application .2 125 945). Meanwhile, the liquid due to the heat input evaporates and the solid 20 of Great exists falls into particles and dried by the fluidised bed. . *
    Due to the different gas flow rates in the product outlet with a sorting effect, only particles of a certain size can fall out of the fluidized bed (economic patent 119 304). Depending on the feed of the initial granulate and / or due to fluctuations in the operation of the apparatus, the fluidized bed can increase so much that its effect is no longer ensured or the apparatus with the fluidized bed is idle, the liquid is sprayed onto the walls, which leads to sticking of the apparatus and deterioration of product quality thermal effect account.
    Known solutions (the description of the invention to the accepted application 1 241 365 (GDR), which, when changing the gas pressure, temperature or in case of clogging of the apparatus, provide for the operation of temperature controllers that trigger alarm calls.
    Another solution provides a constant fluidized bed by regulating the tuned air flow (the open description of the invention to unapproved application 2 125 945 (GDR).
    The purpose of the invention is to achieve a constant, stable mode of operation of the apparatus with a fluidized bed and when changing external conditions, for example, the solids content in the solution '985646 or suspension, to improve the quality of the product due to the stable mode of operation in the fluidized bed and to eliminate losses and deterioration product.
    The task is to create a regulating device, which, depending on the pressures available in the fluidized bed, ensures a stable operating mode, that is, a device that provides both jq dosage of solids and injection of liquids, gas supply and discharge of the product with a sorting effect.
    According to the invention, the problem is solved by the fact that on a known apparatus 3 with a fluidized bed and a product discharge unit with a sorting effect under the streamlined bottom and above it, directly above the created fluidized bed, 20 path tubes are installed, which are connected through a pipeline with organs for regulating the pressure and governing bodies of regulating valves located in the wire for supplying gas to the product outlet 25 with a sorting effect, in the main gas pipeline between the fluidized-bed apparatus branch wires for supplying gas to the product discharge assembly 30 to sorti- rovochnym effect and a device for supplying the starting granulate.
    During operation, the pressure regulating organ operates in such a way that, when the pressure difference increases, caused by an unacceptable increase in the solids content in the fluidized bed, the control valve in the gas conduit of the product outlet assembly with a sorting effect is closed, while while the control valve in the main gas pipeline opens. Thus, less gas passes through the product outlet with a sorting effect, so that particles of smaller diameter can be discharged from the apparatus, which leads to a decrease in the solids content in the fluidized bed and to a decrease in pressure loss in the bed. In case ee reduce pressure loss in the fiber 'both valves operate inversely, ie. E. In the valve gdzopodvodyaschem wire opens at the vremya.kak ventil- in gas pipeline is closed, whereby only big diameter dried particles may be discharged from the apparatus, and the solids content in the layer rises again. 60
    In addition, the invention is characterized by an increase in the number of initial granules supplied by the device for feeding the initial granulate, 65 'with an increase in pressure loss in the layer and a decrease in the amount of initial granules with a decrease in pressure loss in the layer.
    The drawing shows a schematic diagram of the proposed device.
    A protein suspension is injected into the fluidized bed apparatus 1 through a nozzle 1.6. Above the streamlined bottom 3 of the apparatus 1 is a fluidized bed. The streamlined bottom 3 is adjoined by a product withdrawal unit 2 with a sorting effect, which is included in the transport device 17 for the final product. The gas outlet 9, in which the control valve 8 is located, enters the product outlet assembly with a sorting effect. The control body 7 of this control valve 8 is regulated depending on the pressure loss in the fluidized bed through a pressure regulator 6 connected to two nozzles 4 and 5. To the other the pressure regulator 13 is connected to the governing body 12 of the regulating rod 11 in the main gas pipeline 10.,
    To the pressure regulator 6 for regulating the gas flow supplied to the product outlet 2 with a sorting effect, a control member 15 for the metering screw 14 is adapted. Moreover, the ratio between the diameters of the gas pipeline 9 and the main gas pipeline 10 is 0.3. 1
    The proposed device operates as follows.
    With an increase in the solids content and, consequently, pressure loss in the fluidized bed, the control valve 8 of the outlet unit 2 with a sorting effect begins to continuously throttle the gas stream. At the same time, the control valve 11 of the gas main 10 opens. Thus, an increased amount of solids may fall out of the fluidized bed and the solids content in the bed decreases again. At the same time, the transport screw 14 feeds a large number of granules into the fluidized bed, which leads to a change in the spectrum of the granules in the direction of a smaller diameter. Formed in this way. Granules of smaller diameter through the lock gate 17 exit the apparatus 1 with a fluidized bed.
    *
    权利要求:
    Claims (1)
    [1]
    The invention relates to a regulating fixture designed to achieve a stable operation in fluidized bed apparatus in which the injectable solutions or suspensions are dried by a fluid stream in the fluidized bed and the product is discharged through a discharge unit with a sorting effect. Apparatus and apparatus are known in which solutions or suspensions are injected and dried by a hot gas in a vortex motion layered Description of the invention for accepted application 1 241 365 (GDR) laid-out description of invention for non-accepted application. 2 125 945}. In this case, the liquid evaporates due to the heat supplied, and the solid gets on the particles in the fluidized bed and dries it. . Due to the different gas flow rates in the product withdrawal unit with a sorting effect, only particles with a certain value can fall out of the fluidized bed (economic patent 119 3ft4 depending on the supply of the initial granulate and / or due to fluctuations in the operation of the apparatus can increase so much that its action is no longer secured, or the fluidized bed apparatus runs idle, the liquid splashes onto the walls, which leads to the apparatus being stuck and deteriorating products due to thermal effects. Known solutions (off description of the invention to the accepted application 1 241 365 (GDR), which when the gas pressure, temperature, or in the case of clogging of the apparatus change, provide for the triggering of temperature regulators that trigger the alarm bells. Other the solution provides a constant fluidized bed by adjusting the adjusted air flow to the layered description of the invention to the non-accepted application 2 125 945 (GDR). The purpose of the invention is to achieve a constant, stable operation of the fluidized bed apparatus and, when the external conditions change, for example, the solids content in dilution or suspension, improve product quality due to stable operation in the fluidized bed and eliminate losses and deterioration in product quality. The task is to create a regulating device, which, depending on the pressures in the fluidized bed, provides a stable mode of operation, i.e., a device that provides both the dosing of solids and the injection of liquids, gas supply and withdrawal of the product with a sorting effect. is solved by the fact that on a known fluidized bed apparatus and a product withdrawal unit with a sorting effect under a streamlined bottom and it, directly above the fluidized bed created with There are nozzles installed, which are connected through a pipeline to an organ and to regulate pressure and control bodies of control valves located in the conduit for supplying gas to the product withdrawal unit with a sorting effect, in the gas pipeline between the fluidized bed apparatus and the tap branch for supplying gas to the site of the product, with the sorting effect and in the device for supplying the initial granulate. During operation, the pressure control body operates in such a way that when chenii NOSTA different pressures caused unacceptable increase in solid content in the fluidized bed, the pipeline control valve in the product outlet present node with dirty wire | Tirovochnym effect closed, while the control valve in the main gas line opening .aets. Thereby, less gas is passed through the product withdrawal unit with a sorting effect, as a result of which smaller particles can be discharged from the apparatus, which leads to a decrease in the solids content in the fluidized bed and to a decrease in pressure loss in the bed. In the event of a decrease in pressure loss in the bed, both valves act back, i.e., the valve in the gzvodvodayuschim wire opens, while the valve in the gas trunkline is closed, with the result that only dried particles of large diameter can be unloaded from the apparatus, and the solid content the substance in the layer is again increased. In addition, the invention is characterized by an increase in the number of initial granules supplied by devices for supplying the initial granulate, with an increase in the pressure loss in the bed and a decrease in the feed amount of the original granules while reducing the pressure loss in the bed. The drawing is a schematic diagram of the proposed device. A protein suspension is injected into the fluidized bed apparatus 1 through a nozzle 1.6. Above the streamlined bottom 3 of apparatus 1 is a fluidized bed. A streamline bottom 2 with a sorting, effect entering the transport device 17 for the final product adjoins the streamlined bottom 3. The product withdrawal unit with a sorting effect includes a gas pipeline 9, in which a control valve 8 is located. The control unit 7 is controlled by this control valve 8 depending on the pressure loss in the fluidized bed through the pressure regulator 6 connected to two nozzles 4 and 5. To another pressure regulator 13 there is connected a control unit 12 regulating rentil 11 in the gas pipeline 10. To pressure regulator 6 to regulate the gas flow supplied to the product withdrawal unit 2 from the sorter m effect adapted control body 15 for metering screw 14. The ratio between the dia: meter pipeline 9 and the main gas pipeline 10 is 0.3. The proposed device operates as follows. With an increase in the solids content and, consequently, pressure losses in the fluidized bed, the control valve 8 of the outlet 2 with the sorting effect begins to continuously throttle the gas flow. At the same time, the control valve 11 of the gas pipeline 10 is opened. Thus, an increased amount of solids may fall out of the fluidized bed and the solids content in the bed again decreases. At the same time, the transport screw 14 feeds a large amount of granules into the fluidized bed, which leads to a change in the spectrum of the granules in the direction of a smaller diameter. Formed in this way. A granular granularity of smaller diameter through the lock valve 17 exits the fluidized bed apparatus 1. Claim 1. Control device for fluidized bed apparatus and product withdrawal unit with screening effect using
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    同族专利:
    公开号 | 公开日
    BG34861A1|1983-12-15|
    DE2912579A1|1980-01-03|
    DK246079A|1979-12-17|
    RO78307A|1982-04-12|
    DD137006A1|1979-08-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4475292A|1980-12-19|1984-10-09|Secretary of State for United Kingdom Atomic Energy Authority|Separation|
    DE3433302C2|1984-09-11|1992-05-27|Saarbergwerke Ag, 6600 Saarbruecken, De|
    AT390209B|1988-05-05|1990-04-10|Waagner Biro Ag|METHOD AND DEVICE FOR REGULATING FLUID BED TREATMENT DEVICES|
    EP0441092A1|1990-02-08|1991-08-14|Niro Holding A/S|A method and apparatus for heat treating a particulate product|
    WO2001012287A2|1999-08-17|2001-02-22|Unilever N.V.|Apparatus for removing a fluid component from particulized solid materials|
    GB2384161A|2001-12-04|2003-07-23|Powder Conditioning Ltd|Conditioning powders|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD20605278A|DD137006A1|1978-06-16|1978-06-16|CONTROL DEVICE FOR SWIVEL LAYER APPARATUS|
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