• 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 process for contacting a gas with a liquid, wherein the liquid to be contacted is led in the form of a central liquid jet leaving a nozzle through the space containing the gas to be contacted into the liquid to be contacted. In accordance with the process of the invention, a part of the gas and/or the liquid to be contacted, or the total amount of the gas, or a part of the liquid and the total amount of the gas are led onto the surface of the central liquid jet in the form of gas or liquid jets directed to the surface of the central liquid jet.
    公开号:SU1732812A3
    申请号:SU874203706
    申请日:1987-11-27
    公开日:1992-05-07
    发明作者:Кеньереш Иштван；Кох Лехел
    申请人:Иннофинанце Алталанош Инновациош Пензинтезет (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to a method of contacting liquids and gases, in which the liquid to be contacted in the form of a jet exiting the nozzle is directed through the volume filled with gases to the liquid to be contacted.
    There is a method in which an increase in the surface roughness of a jet of fluid is achieved by the following methods or their combinations: using nozzles whose shape deviates from hydraulically optimal, increasing the velocity of the jet of fluid, increasing the turbulence of the jet of fluid and removing the free path of the jet of fluid.
    These methods have common drawbacks: they are associated with a significant increase in flow losses, which deteriorates the energy efficiency of contact, moreover, they all, without exception, worsen the compactness of the liquid jet, which reduces the intensity of contact.
    The aim of the invention is to increase the energy efficiency of gas absorption by the liquid and to increase the mass transfer rate.
    The invention is based on the fact that the outer surface of a jet of liquid, without significantly reducing its compactness, can be directly roughened if on the outer surface
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    The jet is pressurized with the gas to be contacted or a part of the gas and / or liquid. A liquid in the form of a jet coming out of a nozzle is to be contacted, it is introduced into the contacting liquid, the passage through the space filled with gas to be contacted, Part of the liquid and / or gas or the total amount of gas, or part of the liquid and the total amount of gas surface of a jet of fluid.
    As regards the roughening of the surface of a jet of liquid, when a gas is pressurized, the same effect is achieved as when a liquid is pressurized.
    The use of a gas jet is advantageous when the contacting of gas and liquid takes place in a closed tank in which the gas must be under pressure. The use of a gas jet with a liquid is advisable when the amount and pressure of the gas to be contacted is insufficient to obtain an appropriate jet roughness.
    Obtaining the surface roughness of a jet of liquid generally has an advantage when contacting occurs in open systems and the gas to be contacted is atmospheric gas (biological wastewater treatment, aeration of reservoirs and fish ponds).
     To obtain roughness, a stream of gas or liquid is obtained when gas or liquid is supplied from evenly spaced around a coherent liquid stream, for example, circular apertures or from a gap.
    In order to obtain a roughness on the surface of a coherent liquid jet, it is not important at which point in the path that the jet travels from the exit from the nozzle to the entrance to the liquid, it is pressurized with gas and / or liquid. It is advisable to obtain a roughness on the surface of the jet as close as possible to the point of its exit from the nozzle, since this considerably reduces the free path of the jet of liquid.
    The gas and / or liquid streams used to obtain roughness can be directed both in the direction of flow of the central liquid jet and against it. It is advisable that the stream of gas and / or liquid be at an angle of at least 5 ° with the central stream of liquid in order to achieve a suitable roughness.
    Figure 1 shows a device that implements the proposed method, the cut; figure 2 - the same option
    Compared with the known, the proposed method in accordance with the invention has the following main advantages: the energy efficiency is significantly higher (by 30-60%), the range of application is wider, the reliability of design and scale increase is greater, the range of regulation in certain processes is much wider and the clear path of the liquid jet can be significantly reduced, allowing for better utilization of the reactor volume.
    EXAMPLE 1. In an open square tank with a width of 0.5 m and a height of 2 m, 0.3 m3 of solution is circulated by means of a pump through a nozzle with a diameter of 20 mm. The solution contains 0.5 kmol / m3 of sodium sulfate and 0.001 kmol / m3 of cobalt sulfate. The temperature is maintained at 30 ° C. The free path of the liquid jet is 0.3 m. The volume of the flow passing through on the pump, 20.4 m3 / h 4 mass% of the circulating liquid is delivered perpendicular to the outer surface of the liquid jet from the holes 3 made in a copper tube with a diameter of 10 mm and placed on the ring 2, which surrounds the jet of liquid emanating from the nozzle 1 (Fig. 1). The ring has equally spaced 12 holes with a diameter of 1.2 mm. The holes are 40 mm from the surface of the jet of liquid, the distance of the ring from the bottom edge of the nozzle is 10 mm.
    The rate of oxygen dissolution per unit volume is measured by a known method of sodium sulfate oxidation and is 27.2 kg02 / m -h. The hydraulic capacity of the pump is 0.091 kW, the energy efficiency of oxygen introduction is 8.97 kg Oa / kWh.
    Comparative example for example 1.
    Work as described in example 1, but without bringing the liquid to the jet. In this case, the oxygen dissolution rate per unit volume is 16.8 kg 02 / m3-h, the oxygen transfer volume flow is 5.04 kg 02 / h and the oxygen transfer energy efficiency is 5.54 kg 02 / kWh.
    Thus, an improvement of 61.9% is achieved for the oxygen dissolution rate per unit volume, i.e. for the intensity of gas and liquid contact and for energy efficiency.
    PRI mme R 2. Work as in example 1, but the volume flow of the circulating fluid is 18.9 m3 / h, the pump capacity is 0.74 kW. Instead of the method applied in Example 1 to the liquid jet, the jet is roughened with air. Air is supplied through
    a stream envelope made of a copper tube with a diameter of 10 mm. Equal distances x are made in the ring with 6 holes with a diameter of 1.5 mm. The holes are inclined downward from the horizontal by 15 °. The holes are 21 mm from the jet, and the distance of the ring from the bottom edge of the nozzle is 50 mm. Air is supplied through the 4.6 m / h flow ports, which, in addition to the hydraulic power of the pump, requires an additional power of 0.1 kW.
    The oxygen dissolution rate per unit volume is measured as in Example 1 and is 21.7 kg 02 / m3-h, which corresponds to an oxygen transmission mass flow of 6.52 kg 02 / h, so that the energy efficiency of oxygen transfer is 7.82 kgOa / kWh
    Comparative example for example 2.
    Work as in example 2, but do not supply air to the stream. Respectively, the characteristic values are 12.03 kg oh / m3-h, 3.61 kg 02 / h and 4.92 kg 02 / kWh.
    Consequently, thanks to the proposed method for the enhancement of contacting, an improvement of 80.7% is achieved, and for energy efficiency an improvement of 58.9%.
    Example In a tank with a diameter of 0.45 m, a height of 1.5 m, closed from above, with a pump through a nozzle with a diameter of 10 mm, 0.1 m of liquid determined in composition 1 is circulated. The volume flow of the circulating fluid is 6.84 m / h. The pump has a power of 0.56 kW. Air is supplied to the tank with a volume current of 16 m3 / h through the gap 4, which is formed around the polyamide-made nozzle 5 by a housing 6 screwed onto the nozzle casing, also made on polyamide (Fig. 2). The gap is removed 5 mm from the surface of the jet of liquid and the outgoing air forms an angle of about 15 ° with the surface of the jet. For air supply, a power of 0.18 kW is required. Air exits the tank through a hole with a diameter of 20 mm, which is placed on the surface covering the tank from the top, 200 mm from the tank axis. The free path of the liquid jet 0.4 mm.
    The rate of oxygen dissolution per unit volume is 41.2 kgOg / m3-h. Accordingly, the mass flow of oxygen input is 4.12 kg 02 / h and the energy efficiency of oxygen introduction is 5.57 kg Oa / kWh.
    Comparative example for example 3.
    The operation is as described in Example 3, however, the air to be contacted is directed vertically downwards through an opening in the surface covering the tank from above, with a diameter of 20 mm. located 200 mm from the axis, and the used air is discharged through the same opening on the other side. The same amount of air is supplied as in example 3, but air is not supplied directly to the outer surface of the liquid jet. The oxygen dissolution rate per unit volume is 20.0 kg 02 / m3 h, which corresponds to an oxygen transfer mass flow of 2.9 kg-Oa / h or an energy efficiency of 3.92 kg 02 / kWh.
    Thus, the oxygen transfer rate and efficiency are improved by 42.1%.
    PRI me R 4. Operate as indicated in example 1, but under the liquid feed ring is another ring for supplying air (as described in example 2). Creation of the roughness of the jet is carried out by the simultaneous supply of fluid and air.
    The rate of dissolution of oxygen per unit volume is 30.9 kg 02 / m3-h. This corresponds to an oxygen transmission mass flow of 9.27 kg-Oa / h or an energy efficiency of 9.18 kg 02 / kWh.
    Comparative example for example 4.
    They work as in example 4, but neither liquid nor air is supplied to the jet, i.e. All work is proceeding as in a comparative example, for example 1. To achieve an improvement in intensity of 83.9% and an increase in energy efficiency of 65.7%.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A method of contacting liquids and gases, comprising supplying a liquid in the form of a jet coming out of the nozzle and directing it through a volume filled with a gas in contact with it to a liquid, characterized in that, in order to increase the energy efficiency of gas absorption by the liquid and increase the mass transfer rate - chi, part of the liquid and / or gas, or the total amount of gas, or part of the liquid and the total amount of gas in the form of directed gas or liquid jets are fed to the outer surface of the liquid jet nozzle.
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    同族专利:
    公开号 | 公开日
    CA1332833C|1994-11-01|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    CH95365A|1921-04-25|1922-07-01|Escher Wyss Maschf Ag|Device for mixing gases and liquids in order to achieve absorption of the gases by the liquid.|
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    AT291134B|1969-04-24|1971-07-12|Vogelbusch Gmbh|Device for gassing liquids, in particular for aerating flowing water|
    JPS551814B1|1969-12-02|1980-01-17|
    US3927152A|1971-03-12|1975-12-16|Fmc Corp|Method and apparatus for bubble shearing|
    BE788794A|1971-09-20|1973-03-13|Airco Inc|METHOD AND APPARATUS FOR ADDITING OXYGEN TO A|
    AT319864B|1973-04-11|1975-01-10|Waagner Biro Ag|Method and device for treating liquids or turbidity|
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    US4095748A|1975-07-04|1978-06-20|Kanebo, Ltd.|Apparatus for mixing a cement slurry with a glass fiber|
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    GB1573314A|1976-04-14|1980-08-20|Boc Ltd|Method and apparatus for dissolving gas in a body of liquid|
    US4113438A|1976-05-27|1978-09-12|The Chemithon Corporation|Sulfonating apparatus|
    JPS5473361A|1977-11-22|1979-06-12|Clevepak Corp|Apparatus for mixing gas and fluid and method of operating same|
    US4224158A|1977-11-22|1980-09-23|Clevepak Corporation|Aeration system and method with tapered nozzle|
    DE2752391C2|1977-11-24|1985-03-21|Julius Montz Gmbh, 4010 Hilden|Distributor base|
    US4264039A|1977-12-20|1981-04-28|South Pacific Industries|Aerator|
    GB2017281B|1978-03-23|1982-07-21|Asahi Engineering|Method and apparatus for treating water solution of waste material containing salt having smelt-water explosion characteristics|
    US4308138A|1978-07-10|1981-12-29|Woltman Robert B|Treating means for bodies of water|
    ES497838A0|1979-12-18|1981-11-16|British Oxygen Co Ltd|A METHOD OF DISSOLVING A GAS IN A LIQUID IN WHICH THE GAS IS SCARLY SOLUBLE|
    HU190785B|1981-12-22|1986-11-28|Koezponti Valto Es Hitelbank Rt,Hu|Process for contacting liquids with gases|
    GB8315381D0|1983-06-03|1983-07-06|Boc Group Plc|Liquid phase oxidation|
    DE3501175C2|1985-01-16|1988-07-14|Franz-Josef Dipl.-Ing. 4791 Lichtenau De Damann|
    JPH039709Y2|1985-07-23|1991-03-11|JP2649461B2|1991-12-25|1997-09-03|トヨタ自動車株式会社|Carrier structure for exhaust gas purification catalyst|
    DE4206715C2|1992-03-04|1997-06-26|Gaston M Wopfner|Method and device for introducing a gas into a liquid|
    US5520456A|1993-06-16|1996-05-28|Bickerstaff; Richard D.|Apparatus for homogeneous mixing of two media having an elongated cylindrical passage and media injection means|
    DE29821687U1|1998-12-05|2000-04-06|Gea Finnah Gmbh|Device for producing an aerosol|
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    CN102618723A|2012-04-18|2012-08-01|苏州市金翔钛设备有限公司|Oxygen adding injection kettle made of pure titanium|
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    法律状态:
    优先权:
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