• 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 brine-removing device comprises a dissolving tank (11) and a brine tank (1) which are arranged at the same level and connected to each other by a connecting pipe (37), so that saturated brine can be supplied to the brine tank (1) from the dissolving tank (11). Via a primary inlet pipe (21) and a secondary inlet pipe (31), fresh water is supplied to the dissolving tank (11) and the brine tank (1). By the brine tank (1) supplied fresh water, the concentration of brine in the brine tank (1) is reduced.
    公开号:CH712481A2
    申请号:CH00662/16
    申请日:2016-05-24
    公开日:2017-11-30
    发明作者:Krähemann Markus
    申请人:S-Plan Gmbh；
    IPC主号:
    专利说明:

    Description: The invention relates to a salt dissolving apparatus and a method for producing a salt solution according to the preamble of claims 1 and 10.
    From DE 20 2012 000 268 U1 a device for producing brine from a free-flowing salt and water is known, which comprises a funnel-like tapered towards the bottom dissolving container for receiving the salt and arranged under the dissolving tank brine tank. Via a supply line leading to the deepest part of the dissolving tank, water can be supplied to the dissolving tank. The salt is supplied through the opening at the top of the dissolving tank. Along the upper edge of the dissolving container, a horizontal loop is arranged on the inside thereof. It is designed as a sieve tube and comprises sieve openings which are covered by a filter cloth. This prevents that undissolved salt crystals from the dissolving tank can get into the loop. The ring line is connected via a drain with the brine tank. The loop defines an overflow level, with brine being drained from the dissolution tank into the underlying brine tank once the brine level in the dissolution tank has reached the overflow level. Brine can be discharged from the brine tank via a withdrawal line by means of a pump into a pressure line and discharged from there via a delivery line.
    Since the concentration of brine in the brine tank does not have the desired target concentration, it must be diluted with fresh water before discharge via the delivery line. The control or regulation of fresh water supply is relatively complex and requires a measurement of the brine concentration in the pressure line with a meter.
    Brine can only be removed from the dissolving tank into the brine tank when the dissolving tank is completely filled with brine.
    The brine tank must be made of a material that is not attacked by the brine, and at the same time has a sufficiently high mechanical stability to support the weight of the filled dissolving tank. The brine tank is closed and has no access that would be suitable for auditing purposes.
    The brine provided in brine containers is saturated. In order to provide a ready-to-use brine with a lower concentration, the saturated brine must be additionally mixed with fresh water after removal from the brine tank. The concentration of the brine must be measured.
    The object of the present invention is to provide a salt dissolving device which is simple in construction and easy to maintain, and with the brine can be prepared in a desired concentration in a simple manner.
    This object is achieved by a salt dissolving device according to the features of patent claim 1 and by a method for producing a salt solution according to the features of patent claim 10.
    In the inventive salt dissolving apparatus, the dissolving tank, in which salt is dissolved by adding fresh water, is disposed at the same level as the brine tank in which brine is prepared and stored in a ready-to-use concentration. Each of these two containers is formed like a trough with a bottom and a wall, which limit the respective container volume or tank volume. Both the dissolving tank and the tank of the brine tank each have an overhead opening which is covered by a removable lid. The interior of each of these containers is thus e.g. freely accessible from above for inspection or maintenance. Furthermore, the static load on the container walls is comparatively small, since the weight force acting vertically on the upper container edges is minimal. The containers can therefore be made without additional reinforcements from relatively inexpensive plastics such as polyethylene or polypropylene. The construction heights of the containers can range from comparatively low 1.5 m to about 6 m at higher silos.
    Preferably, the dissolving tank is disposed within the brine tank, or the dissolving tank and the brine tank are separated by a vertical partition walls of a tank. This allows a compact construction of the salt dissolving device. In particular, when the outer shell is to be double-walled, in order to provide additional protection against leaks, such salt dissolving devices can be constructed to save material. Since the edges of the brine tank and the dissolving tank are at the same level, a common protective cover can be supported on the edges of both containers. Preferably, such a protective cover comprises two or more sections, which are separate and thus more easily removable. About the release container, the lid or lid portion may comprise a recess which is closed by a removable auxiliary cover. Through this recess, the dissolving container can be easily loaded with salt if necessary.
    The cross-sectional area of the dissolving tank is substantially constant over its entire height. Compared to a conical container, the cross-sectional area in the region of the container bottom is thus large. There are one or more outlet openings of one or more primary inlet pipe for dissolving water or fresh water. When this release water exits through the outlet openings under pressure, it mixes so fast and well with the salt in the bottom area of the dissolving tank. This favors a particularly efficient brine production.
    The inlet opening of a connecting line connecting the dissolving tank to the brine tank is at a level above the tank bottom where the brine is already saturated, i. has a salt concentration of about 26%. This condition is met in a height of about 40cm. The connecting line allows leveling of the liquids in the dissolving tank and brine tank. The connecting line opens in the brine tank at a level lower than the inlet opening. Preferably, the outlet opening of the connecting line is arranged close to the tank bottom, in particular less than 10 cm above this. The brine in the brine tank can have a lower salt concentration of, for example, 21% or 22% and thus also a smaller density than the saturated brine in the dissolving tank.
    Characterized in that the outlet opening of the connecting line is arranged close to the tank bottom, an undesirable circulation of brine between the brine tank and the dissolution container can be prevented or at least limited.
    At the inlet opening of the connecting line prevents a filter and / or sieve arrangement that undissolved salt can get over the connecting line in the brine tank. Preferably, the screen assembly comprises a vertically oriented pipe section with openings or pores for the passage of brine. Since this pipe section extends from the level of the inlet opening of the connecting line to just below the upper edge of the dissolving tank, saturated brine can reach the interior of the pipe section and through the connecting line into the brine tank over the entire height of this pipe section. The higher the brine level in the dissolving tank, the greater the effective area of the strainer tube through which liquid can enter the connecting pipe. If the liquid level in the dissolving tank is higher than in the brine tank, this causes an additional static pressure in the dissolving tank, which promotes the passage of saturated brine through the openings or pores of the perforated pipe.
    Preferably, the pipe section comprises at its upper end an opening which is arranged as an overflow near the upper container edge.
    Via a secondary inlet pipe, which opens into the brine tank, the brine tank fresh water or dilution water can be supplied to dilute the brine in the brine tank to a desired concentration. By means of suitable adjusting means, such as continuously adjustable valves in the inlet tubes, the volume flows of the fresh water supply in the dissolving tank and in the brine tank can be set independently. The adjusting means may e.g. be manually actuated ball valves or alternatively valves that are controlled by actuators controlled by a controller. The monitoring and / or adjustment of the flow rates can be done in a known manner, with measuring devices detect the respective volume flow at the inlet tubes. For manually setting the flow rates, for example, flow meters with well-visible floats are suitable. In conjunction with a controller, alternatively or additionally, electronic flowmeters may be used. These are known per se and can work according to different physical principles. Based on the measured variables of the flow indicators or the flow sensors, predetermined volume flows are set at the inlet tubes. These cause the preparation of new saturated brine in the dissolving tank and in the brine tank the dilution of the brine to the desired concentration value.
    Preferably, the volume of the brine tank is greater than the volume of the dissolving tank. The ratio of these two volumes can be set so that the liquid level in the brine tank rises more slowly or approximately as fast as the liquid level in the dissolving tank when fresh water is supplied in the desired ratio via the inlet pipes to produce brine in the concentration normally required.
    Preferably, the discharge point of the secondary inlet pipe is arranged within the connecting line, that the saturated brine flowing from the dissolving tank can be mixed with dilution water near the outlet opening of the connecting line in the brine tank. As a result, the brine is already diluted within the connecting line to the desired concentration. At least the end portion of the secondary inlet pipe may have a smaller outlet diameter than the sheathing portion of the connection pipe. This causes an increase in the exit velocity of the dilution water and thus a better mixing of the brine. Due to the downstream outlet opening of the secondary inlet pipe, the flow of the diluting water causes a suction on the brine in the connecting pipe.
    Alternatively, a Venturi tube can be used for admixing the dilution water.
    Furthermore, the brine-dissolving device according to the invention has the advantage that the brine tank and the dissolving tank can be emptied completely or largely for the most part.
    Brine of the desired concentration can be prepared simply and without complex measuring instruments only by adjusting the flow rates at the fresh water supply.
    Saturated brine can be transferred from the dissolving tank into the brine tank even if the brine level in the dissolving tank is below the maximum level.
    A preferred embodiment of the salt dissolving device according to the invention will be described in detail with reference to some figures. Show
    1 shows a cross section of the salt dissolving device,
    Fig. 2 is a plan view of the salt dissolving device of FIG. 1 without a lid.
    The brine device comprises a brine tank 1 with a circular tank bottom 3 and a peripheral cylindrical tank wall 5. The outer diameter D1 of the brine tank 1 is typically in the range of 2 m to 4 m, the height H1 of the tank wall 5 in the range of 1, 5 m to 6 m.
    The tank bottom 3 and / or the tank wall 5 may be simple or double formed and made of a plastic, which is not attacked by brine, and preferably has a high impact resistance. Inside the brine tank 1, a dissolving tank 11 having a circular tank bottom 13 and a peripheral cylindrical tank wall 15 is disposed. As a rule, it is sufficient to form the container wall 15 simply because it is arranged completely within the brine tank 1. Of course, it can also be designed as a double wall.
    Preferably, the container bottom 13 and the tank bottom 3 are integrally or integrally formed from a common bottom part. The container bottom 13 is a portion of this common bottom part, the base area of which is smaller than half the base area of the tank bottom 3. Alternatively, the brine tank 1 and the dissolving container 11 could be e.g. also be separated by a partition wall portions of a cylindrical tank or have a different shape from the cylindrical shape (not shown).
    A lid 7 covers the overhead openings of the brine tank 1 and the solvent container 11. The lid 7 is preferably formed in several parts, so that the individual lid sections are easier to remove. In particular, a portion of the lid 7 may be formed as a removable auxiliary cover 7a, which closes a recess in the lid 7, which is arranged with the lid closed 7 over the release container 11. To feed the dissolving tank 11 with salt, only the auxiliary lid 7a needs to be removed. This can also prevent salt from accidentally entering the brine tank 1 directly. When the lid 7 is closed, it lies at least in places on the upper edges of the release container 11 and. of the brine tank 1. In the uppermost section of the tank wall 5, a primary inlet pipe 21 and a secondary inlet pipe 31 for supplying fresh water into the brine tank 1 are guided from the outside. The passage points in the tank wall 5 are sealed in a suitable manner. The primary inlet pipe 21 is guided in an analogous manner through an opening in the upper edge region of the dissolving container 11 into this dissolving container 11. It comprises a vertical portion 21a which is close to the container bottom 13, i. within a range of about 0 to 25 cm one or more outlet openings 21b, through which fresh water can be introduced into the dissolving tank 11 under pressure. Optionally, a plurality of vertical sections 21a ending in the vicinity of the container bottom 13 may also be distributed within the dissolving container 3 (not shown). Preferably, the end of each end portion 21 a is stabilized by anchoring to the container bottom 13. The secondary inlet pipe 31 also includes a vertical end portion 31 a, which opens in the vicinity of the tank bottom 3 in the brine tank 1. The end portion 31a of the secondary inlet pipe 31 is surrounded by a jacket tube 33 with a larger inner diameter, the outlet opening 33a is located at a first level N1 within about 10 cm above the tank bottom 3. This first level N1 is below the mouth 31b of the secondary inlet pipe 31. The lowermost portion of the jacket tube 33, in which the mouth 31 b of the secondary inlet pipe 31 is arranged, is also the end portion of a connecting line 35, the brine tank 1 with the release container 11 connects. The connection line 35 has an inlet opening 35a at a second level N2, which is higher than the first level N1. The second level N2 is at least 40 cm above the tank bottom 13. The connecting pipe 35 includes a portion crossing the tank wall 15 and is at a level between that of the confluence point 31b of the secondary inlet pipe 31 and the second level N2 by means of a tee with the jacket pipe 33 connected. The jacket tube 33 may extend adjacent to the T-piece upwards approximately to the upper edge of the brine tank 1 and up to that level where the secondary inlet pipe 31, the tank wall 5 traverses. Since the liquid level is lower both in the brine tank 1 and in the dissolving tank 11, the jacket tube 33 is an effective protection device, the reflux of brine with a lower salt concentration from the brine tank 1 in the solvent tank 11 with saturated brine or a spontaneous circulation of brine between the brine tank 1 and the dissolving tank 11 difficult due to the different salt concentration.
    As an alternative to an upwardly extended jacket tube 33, the secondary inlet pipe 31 could also be inserted directly into the connecting line 35 at the T-piece and the entry point sealed, so that the lower outlet opening 33a is the only connection of the jacket tube 33 or the connecting line 35 to the brine tank 1 ,
    In the dissolving tank 11, the inlet opening 35 of the connecting line 35 is connected to the outlet opening of a brine-permeable and undissolved salt retaining screen tube 37. The strainer tube 37 extends from the second level N2 to a higher third level N3. There, the inlet opening is connected to an overflow 39, which preferably has the shape of a tee. The upper opening of this tee defines an overflow level N4. The T-piece is preferably connected by a further connecting line 36 with a corresponding T-piece at the upper end of the jacket tube 33 in the brine tank 1.
    Outside of the brine tank 1, a level indicator 41 is arranged (Fig. 2), which indicates the level of the brine in the brine tank 1. Close to the tank bottom 3, the brine tank 1 comprises a discharge line 43 which crosses the tank wall 5 and has a removal tap 45 for removing or pumping brine out of the brine tank 1.
    The volume flows of fresh water in the primary inlet pipe 21 and in the secondary inlet pipe 31 may e.g. be adjusted manually by means of ball valves, preferably flow meters are provided for setting the desired values (not shown).
    Preferably, the dissolving tank 11 and / or the brine tank 1 include level switches, with which the supply of fresh water via the inlet pipes 21, 31 is interrupted by associated safety valves when reaching the maximum level (not shown). The further supply of fresh water can either be triggered manually via a switch or automatically as soon as the level in the brine tank 1 falls below a predetermined level.
    Alternatively, the levels in the dissolving tank 11 and / or in the brine tank 1 can also be monitored by means of level sensors by a controller. The controller can use the measured variables of the level sensors as input variables for switching off the supply of fresh water via the inlet pipes 21, 31. The controller can also be designed to detect the measured variables of the level sensors and their temporal change in order to determine the volume flows in the inlet tubes 21, 31 therefrom. Furthermore, the controller may be designed to automatically control these volume flows via suitable actuators and adjusting means. This allows the automatic production of brine with preselected concentration values.
    权利要求:
    Claims (11)
    [1]
    A brine-dissolving device comprising a) a salt-dissolvable dissolving tank (11) having a tank bottom (13) and a tank wall (15), b) at least one primary inlet pipe (21) having at least one outlet opening (21b) for supplying water to be dissolved into the dissolving tank (11), c) a brine tank (1) having a tank bottom (3) and a tank wall (5), characterized in that the dissolving tank (11) is arranged at the same level as the brine tank (1) that the dissolving tank (1) 11) is connected via a connecting line (35) to the brine tank (1), said connecting line (35) having an outlet opening (35a) at a first level (N1) in the brine tank (1) and an inlet opening (35a) at a higher level second level (N2) in the dissolving tank (11), and wherein the inlet opening (35a) is separated from the adjacent interior of the dissolving tank (11) by a brine-permeable screen means, and in that a secondary inlet pipe (31) for feeding opens lead of dilution water in the brine tank (1).
    [2]
    2. brine release device according to claim 1, characterized in that the second level (N2) is at least 40 cm above the container bottom (13).
    [3]
    3. Salt dissolving device according to one of claims 1 or 2, characterized in that the first level (N1) is less than 25 cm above the tank bottom (3).
    [4]
    4. brine release device according to one of claims 1 to 3, characterized in that the secondary inlet pipe (31) in the connecting line (35) opening into the mouth opening (31b).
    [5]
    5. brine release device according to one of claims 1 to 4, characterized in that the volume flow of the dissolving water in the primary inlet pipe (21) with a primary actuating means and the volume flow of the dilution water in the secondary inlet pipe (31) are adjustable with a secondary adjusting means.
    [6]
    6. brine release device according to one of claims 1 to 5, characterized in that the sieve means comprises a strainer tube (37) whose outlet opening is connected to the inlet opening (35a) of the connecting line (35), and its provided with screen openings and / or filter pores lateral surface extending from the second level (N2) to a higher third level (N3).
    [7]
    7. Salt dissolving device according to one of claims 1 to 6, characterized in that the screen tube (37) on a fourth level (N4) above the third level (N3) comprises an overflow of the release container (11) usable inlet opening.
    [8]
    8. Salt dissolving device according to one of claims 1 to 7, characterized in that the dissolving container (11) within the brine tank (1) is arranged, or that the brine tank (1) and the dissolving container (11) are separated by a partition walls of a tank ,
    [9]
    9. salt dissolving device according to one of claims 1 to 8, characterized in that the volume of the brine tank (1) is greater than the volume of the dissolving tank 11).
    [10]
    10. A process for preparing a saline solution with a salt dissolving device according to one of claims 1 to 9, characterized in that the dissolving container
    [11]
    (11) salt is fed to the dissolving tank (11) via the primary inlet pipe (21) and the brine tank (1) via the secondary inlet pipe (31) fresh water is supplied in a predetermined ratio, and that saturated brine from the dissolving tank (11) is supplied to the brine tank (1) via the strainer and the connecting pipe (37).
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    同族专利:
    公开号 | 公开日
    CH712481B1|2020-03-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2020-11-30| PFA| Name/firm changed|Owner name: S-PLAN AG, CH Free format text: FORMER OWNER: S-PLAN GMBH, CH |
    优先权:
    申请号 | 申请日 | 专利标题
    CH00662/16A|CH712481B1|2016-05-24|2016-05-24|Saline dissolver.|CH00662/16A| CH712481B1|2016-05-24|2016-05-24|Saline dissolver.|
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