• 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 slag is granulated by means of a water jet. In order to reduce or to prevent the emission into the environment of noxious H2S and SO2 substances in the form of gases, the power jet containing steam, granulate and noxious substances is sprayed directly into a water run-down tank. The steam still remaining and the noxious H2S and SO2 substances that have not yet been washed out are cooled off and condensed by a water spray in a condenser in the counterstream. The gas that still remains following steam condensation is drawn off at the front end of the condenser and returned to the injector via a closed circuit pipe.
    公开号:SU1732813A3
    申请号:SU864028603
    申请日:1986-12-01
    公开日:1992-05-07
    发明作者:Геропп Дитер；Видемер Карл；Мюллер Конрад
    申请人:Айо-Штальбау Гмбх Унд Ко, Кг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the building materials industry, in particular, to technology and equipment for the production of slag granulate.
    The purpose of the invention is to protect the environment from gas emissions and to save energy.
    Figure 1 shows a flow chart of a slag granulation plant; Fig. 2 is a diagram of a granulation device.
    Liquid slag coming from the blast furnace 1 through the chute 2 for the slag is led to the injector 4 which includes the spray head 3. In the injector there is a nozzle head 5. The slag falls at the end of the chute 2 through the hole in the injector 4. The working jet coming from the nozzle head 5 captures slag in the direction of the collector 6. The nozzle head 5 of the injector 4 consists mainly of a nozzle plate with a large number of nozzles with a relatively small diameter.
    The upwardly opened profile of the working jet of the nozzle head 5 overlaps with the next series of water jets of the spray head 3. This prevents gas or steam from returning to the chute 2. The working water of the nozzle head 5 and the water directs the slag and flowing into the spray head to the spray head 3. head gas into the water of the collector 6. The slag chute is protected by a lid 7, under which
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    static underpressure occurs.
    The working water is supplied to the injector 4. Consequently, to the injector 5 and the sawing head 3, it is carried out through the pipeline 8 for supplying the working water. A working stream containing water vapor, granulates and sulfuric emissions is directly blown into the sump 6, due to which intense mixing and increased heat transfer occur. The residual betting is not yet washed components of the NCB and S02 is cooled and condensed in the condenser.
    9 in a countercurrent with sprayed water from the forks 10. Gaseous sulfur emissions
    They are absorbed by water and are released through cooling water, and they are combined with calcium in it.
    Under the rows of spray nozzles
    10, one or more gutters 11 are arranged for trapping water. Above the collector 6 there is a condenser 9, in the wall of which there are spraying nozzles 10 in the form of a row. The condenser 9 is provided with a plate-type block 12 of steam in the form of a valve or a shutter in the lowering 13.
    The condenser 9 has a return pipe 14 connected to the head end 15. In the return pipe
    14, throttle valve 16 is located, as well as a minimum pressure valve 17.
    Under the influence of the working jet, the slag is granulated to form thinner particles. After collector 6, the resulting mixture of granulate with water through the waste pipe 18, which is mainly inclined, is brought to the dewatering device 19. The dewatering device 19 may consist of one or more mine receptacles in which the granulate is deposited. However, dewatering can also be carried out in dewatering machines (not shown), for example, using scooping wheels.
    The spray nozzles 10 supply process water through the turbine 20 for the sprayed water. Water - condensate is supplied to returnable water cooler (not shown) through the return plumbing 21.
    The residual gas remaining after condensation of the vapor, consisting of air and traces of HaS and S02, is removed at the head end
    15 of the condenser 9 and through the return duct 14 are again supplied to the injector 4, the process water is directed to the circulation loop, and evaporation losses and other losses due to residual moisture remaining in the granulate are replaced.
    a constant closed gas circulation loop is also formed.
    Slag granulation is carried out due to the fact that liquid slag with a temperature of approximately 1500 ° C in injector 4, coming from chute 2 for slag, is exposed to a working jet formed from many separate jets and processed into a fine granulate. It consists of granulated slag, water, water vapor and a certain amount of air. The water vapor produced during the rapid cooling of the slag contains components of HaS and 502.
    The impulse of the working jet and water jets from the spraying head 3 is chosen so that the gas flowing from the return line 14 into the injector, including slag, is introduced into the water of the collector 6. Inside the condenser 9 there is a wall that forms water to the water collector 6. This prevents the flow of gas and steam, while a reduced pressure is maintained inside the condenser 9.
    In collector 6, the slag is mixed with working water, with appropriate thermal leveling occurring. If the slag flow is low, the water temperature of the collector 6 remains below the boiling point. If the slag influx is large, then a part of the water in collector 6 is evaporated. This steam and the gas supplied from the injector to the collector 6 rises up and flows through the chutes to trap water into the space of the condenser. The water supplied for spraying is sprayed through the nozzles 10 and mixed with the rising steam flow with the gas, thereby also leveling the heat and mass exchange between the steam flow with the gas and the sprayed water. In this case, the steam is condensed and washed away by the falling down sprayed water and through the chutes 11 to catch the water and the return water lines 21 are directed further to the cooler of the circulating water. The residual gas that rises further along with the residual vapor component is collected at the head of the condenser 15 and re-directed to the injector 4 through the return line 14.
    In order to prevent possible destruction under the effect of external atmospheric pressure in the event of work disturbances, a minimum pressure valve 17 is located in the return pipe 14.
    In the process of starting the temperature in the condenser 9 is equal to the ambient temperature. After turning on the supply of working water and
    water sprayed, the temperature of the air in the condenser 9 rises to the water temperature. At the same time, the air in the condenser expands along the isobar. The corresponding volume flows through the plate-shaped blockage 12 which acts as a valve for steam to the outlet 13 and from there to the free atmosphere. This escaping air is free from any aggressive substances.
    By introducing a mixture of slag with working water into the water of the collector 6 under its surface and condensing in the condenser 9 due to the sprayed water of the nozzles 10, the gaseous sulfur emissions H2S and S02 are almost completely separated and fall out. The remaining residual amounts are again brought to the process in a closed circulation loop through the return line 14 so that no aggressive substances are released into the free atmosphere.
    权利要求:
    Claims (5)
    [1]
    Claim 1. Method of making slag granulate by exposing slag melt to water, introducing granulate with steam and sulfur-containing gases into a water collector, cleaning the released steam and sulfur-containing gas with irrigation water, returning water during granulation and dewatering granules This, characterized in that, in order to protect the environment from gas emissions and to save energy, granulates with steam and sulfur-containing gases are introduced under a layer of water, and steam and gases after irrigation with water
    served on granulation.
    [2]
    2. The method according to claim 1, characterized in that the condensate formed with water after irrigation with sulfur-containing gases is captured,
    [3]
    3. A method according to claim 1, characterized in that an excess pressure is maintained over the water irrigation plane and a reduced pressure above the water irrigation plane.
    [4]
    4. A device for the manufacture of slag granulate, containing a slag chute, a spray head, a water collector, a dehydrator, a condenser and return lines for water, which is due to the fact that, in order to protect the environment from gas emissions and to save energy, the condenser it is equipped with traps above the water tank, the exhaust device with
    it is equipped with a plate valve or a plate steam valve, a return pipe for steam and gas with throttle and vacuum valves.
    [5]
    5. An apparatus according to claim 4, characterized in that the spray nozzles of the condenser are arranged one above the other in several rows on its side surface.
    s
    13 12
    75
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    同族专利:
    公开号 | 公开日
    DE3511958C2|1989-08-31|
    ES8706212A1|1987-06-01|
    WO1986005819A1|1986-10-09|
    SE8601409D0|1986-03-26|
    ES553585A0|1987-06-01|
    FR2579620A1|1986-10-03|
    US4758260A|1988-07-19|
    JP2561653B2|1996-12-11|
    GB2173514A|1986-10-15|
    ATA86086A|1988-01-15|
    SE8601409L|1986-10-03|
    FR2579620B1|1987-12-11|
    IT8619946D0|1986-04-01|
    WO1986005818A1|1986-10-09|
    BE904537A|1986-07-31|
    PL145347B1|1988-09-30|
    DE3511958A1|1986-10-16|
    KR930004472B1|1993-05-27|
    GB2173514B|1989-08-02|
    ZA862412B|1986-11-26|
    JPS62502611A|1987-10-08|
    IT1188489B|1988-01-14|
    CS275931B6|1992-03-18|
    AT386420B|1988-08-25|
    KR880700085A|1988-02-15|
    GB8608027D0|1986-05-08|
    AU5696886A|1986-10-23|
    SE463155B|1990-10-15|
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    DE10152672C2|2001-10-05|2003-11-13|Voest Alpine Ind Anlagen|Schlackengranulierungsanlage|
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    JP5798217B1|2014-06-23|2015-10-21|株式会社Ihi|Granulated slag production apparatus and granulated slag production method|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19853511958|DE3511958C2|1985-04-02|1985-04-02|
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