Quantitative concentration device and concentration method for materials easy to agglomerate

Abstract

The quantitative concentration device comprises an efficient evaporation concentration mechanism and a vacuum condensation mechanism, the efficient evaporation concentration mechanism comprises a concentrated material bottle arranged in a water bath kettle, and a stirring blade of a high-speed dispersion machine is vertically arranged in the concentrated material bottle through a central opening of the concentrated material bottle; the vacuum condensation mechanism comprises a condensation pipe, a low-temperature constant-temperature water tank, a safety buffer and a water circulation vacuum pump; the invention further provides a material concentration method which comprises the following steps: starting the water circulation vacuum pump, heating, evaporating and concentrating liquid in the material bottle to form steam while the high-speed dispersion machine stirs materials, cooling the steam through the condensation pipe, and enabling the steam to flow into the quantitative collection bottle; and uncondensed steam enters the safety buffer through the exhaust pipe. According to the method, the possibility of agglomeration or layering of the material when water evaporation is reduced in the heating process is reduced, the problem of how to judge the evaporation and concentration time is solved, and the service life of the water circulation vacuum pump is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of solution evaporation concentration, in particular to a concentration method for easily agglomerated materials and a quantitative concentration device for easily agglomerated materials. Background Art

[0002] Evaporation concentration refers to the process of boiling a solution by heating or reducing pressure, vaporizing and separating part of the solvent, and concentrating the solution. Most existing distillation concentration devices are heated by open flames, which makes it difficult to control the temperature, the distillation process and the distillation volume. In addition, the distillation speed is slow, the liquid concentration efficiency is low, and the evaporation concentration process is irreversible.

[0003] At present, the cooling water used in the evaporation and concentration device is groundwater or tap water, which will be affected by seasonal changes. The condensation effect will be better when the temperature is low in winter, and the water temperature will reach more than 32 degrees in summer, which cannot be quickly condensed and cooled, which significantly reduces the evaporation and concentration effect of the entire device. During the evaporation and concentration process, the materials that are easy to agglomerate are prone to rapid evaporation loss of heated water, which causes the fine particles in the materials to agglomerate or stratify. If the evaporation and concentration temperature is too high, the organic additives in the slurry material will cause volatilization loss or destroy its structure, thereby affecting the stability of the physicochemical indicators of the slurry material. The output of condensed water cannot be measured in time during the evaporation and concentration process, which is not conducive to judging the progress of evaporation and concentration and the test time. After the water circulation vacuum pump is used for a long time, the temperature in the working water tank will rise, affecting the normal use of the circulation vacuum pump, and unable to provide stable negative pressure working conditions, thereby affecting the evaporation and concentration effect of the entire device, resulting in low evaporation and concentration efficiency, reducing the concentration work efficiency, and wasting groundwater or tap water, requiring special personnel to guard. Therefore, it is of great research value to study the quantitative concentration device and concentration method for materials that are easy to agglomerate. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for concentrating easily agglomerated materials and a quantitative concentrating device for easily agglomerated materials, so as to overcome the above-mentioned defects in the prior art.

[0005] The present invention is achieved by adopting the following technical solutions:

[0006] The first aspect of the present invention is to provide a quantitative concentration device for easily agglomerated materials, comprising a high-efficiency evaporation concentration mechanism and a vacuum condensation mechanism, wherein:

[0007] The high-efficiency evaporation and concentration mechanism comprises a water bath, a concentrated material bottle placed in the water bath, a high-speed disperser is arranged on one side of the water bath, the high-speed disperser is fixed by a column provided with a cross clamp, and a stirring blade of the high-speed disperser is vertically arranged in the concentrated material bottle through an opening in the center thereof;

[0008] The vacuum condensation mechanism includes a condenser, a low-temperature constant-temperature water tank, a safety buffer and a water circulation vacuum pump connected to the top of the safety buffer through a hose. The condenser is connected to the concentrated material bottle through a three-way pipe. The upper end of the condenser is provided with a steam outlet, the upper side is provided with a cooling water return pipe, the lower end is provided with a liquid receiving pipe, and the lower side is provided with a cooling water inlet pipe, and the liquid receiving pipe is connected to a quantitative collection bottle; a water pump and a fixing clamp are respectively provided on both sides of the interior of the low-temperature constant-temperature water tank, the water pump is connected to the cooling water inlet pipe, and the fixing clamp is used to fix one end of the cooling water return pipe; the safety buffer is connected to the liquid receiving pipe through an air extraction pipe, and a separation grid is provided in the middle of the safety buffer.

[0009] Preferably, the water bath is an electric constant temperature water bath.

[0010] Preferably, the concentrated material bottle adopts a four-necked flask, wherein the central opening is vertically inserted into the stirring blade of the high-speed disperser, one opening is a feeding opening, one opening is a material temperature measuring hole, and one opening is connected to the condenser through a three-way pipe.

[0011] Preferably, the column is provided with two cross clamps, which can be moved up and down on the column for positioning; one is used to fix the high-speed disperser, and the other is used in combination with the universal clamp to fix the concentrated material bottle. The cross clamp and the universal clamp on the column are used to fix the concentrated material bottle to prevent the concentrated material bottle from vibrating or moving. The combination of the cross clamp and the universal clamp belongs to the conventional method in the art and will not be described here.

[0012] Preferably, the condenser is fixed by an iron frame with a universal clamp arranged at the rear side thereof. Of course, the universal clamp is also fixed on the column of the iron frame in combination with a cross clamp in a conventional manner. The condenser can be a spherical condenser or a serpentine condenser.

[0013] Preferably, the quantitative collecting bottle is placed on an experimental lifting platform, and the height of the quantitative collecting bottle can be adjusted by the experimental lifting platform to better cooperate with the connection between the devices.

[0014] Preferably, a desiccant is arranged in the inner lower part of the safety buffer. The desiccant may be color-changing silica gel particles, which are used to absorb a small amount of water vapor in the vacuum exhaust pipe. At the same time, the amount of water vapor in the exhaust pipe can be judged by the change in color.

[0015] Preferably, a cooling ice box is provided in the water tank of the water circulation vacuum pump, which can solve the problem that the use effect of the water circulation vacuum pump is affected by the temperature rise during the use of the water circulation vacuum pump and the warm water in the water tank needs to be replaced from time to time.

[0016] The second aspect of the present invention is to provide a method for concentrating easily agglomerated materials, comprising the following steps: adding 60%-80% of water by volume to a water bath, adding materials to be evaporated and concentrated to a concentrated material bottle, placing the concentrated material bottle in a water bath to heat it, and starting a high-speed disperser; placing a water pump in a low-temperature constant-temperature water tank, turning on the power of the water pump, connecting the water pump to the lower end of a condenser tube through a condenser water inlet pipe, and discharging condensed water from the upper end of the condenser tube into the low-temperature constant-temperature water tank through a condenser water outlet pipe; the air inlet of a water circulation vacuum pump is connected to the upper port of a safety buffer container through a pipeline, a separation grid is provided in the middle of the safety buffer container, and the lower port of the safety buffer container is connected to the liquid receiving pipe at the lower end of the condenser tube through an exhaust pipe, turning on the power of the water circulation vacuum pump, and heating and evaporating the liquid in the concentrated material bottle to form steam while the high-speed disperser stirs the material, cooling it through the condenser tube, and finally flowing it into a quantitative collection bottle; the steam that is not completely condensed enters the safety buffer through the exhaust pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention uses a low-temperature constant-temperature water tank and a water pump in combination to replace tap water to cool the condenser, thereby increasing the cooling rate and reducing the waste of tap water;

[0019] 2. Install a safety buffer between the water circulation vacuum pump and the exhaust pipe connected to the condenser, so that the liquid vapor that is not completely condensed in the condenser can be self-heated and absorbed again, avoiding the incompletely condensed liquid vapor affecting the normal use of the water circulation vacuum pump;

[0020] 3. Install a high-speed disperser in the concentrated material bottle, and use the dispersing blades of the high-speed disperser to evenly disperse the slurry sample to be concentrated, which can prevent the sample from agglomerating and stratifying;

[0021] 4. Using quantitative collection bottles instead of ordinary collection bottles solves the problem of how to determine the corresponding amount of materials to be evaporated and concentrated and the required evaporation and concentration time. The amount of water produced by evaporation and concentration can be theoretically calculated in advance to determine the end time of evaporation and concentration.

[0022] 5. Adding a cooling ice box to the water tank of the water circulation vacuum pump solves the problem that the temperature rise during the use of the water circulation vacuum pump affects the use effect of the water circulation vacuum pump and the need to replace the warm water in the water tank from time to time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention.

[0024] In the figure: In the figure: 1 water bath, 2 concentrated material bottle, 3 column, 4 universal clamp, 5 cross clamp, 6 high-speed disperser, 7 polytetrafluoroethylene stirring plug, 8 feeding port, 9 material temperature measuring hole, 10 thermometer, 11 three-way pipe, 12 condenser, 13 iron frame, 14 cooling water inlet pipe, 15 cooling water return pipe, 16 steam outlet, 17 liquid receiving pipe, 18 quantitative collection bottle, 19 experimental lifting platform, 20 low-temperature constant temperature water tank, 21 water pump, 22 fixing clamp, 23 water circulation vacuum pump, 24 cooling ice box, 25 safety buffer, 26 separation grid, 27 desiccant, 28 exhaust pipe. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be noted that these drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore they only show the structures related to the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the description of the present invention, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0029] In the following examples, the water bath pot is an electric constant temperature water bath pot, the concentrated material bottle is a four-necked flask, and the condenser is a spherical condenser. Other devices, instruments, glassware, etc. are all conventional and general in the art.

[0030] Example

[0031] See also Figure 1 , a quantitative concentration device for easily agglomerated materials, comprising a high-efficiency evaporation concentration mechanism and a vacuum condensation mechanism, wherein the high-efficiency evaporation concentration mechanism comprises a water bath 1, a concentrated material bottle 2 placed in the water bath 1, a high-speed disperser 6 is arranged on one side of the water bath 1, the high-speed disperser 6 is fixed by a column 3 provided with a cross clamp 5, and a stirring blade of the high-speed disperser 6 is vertically arranged near the bottom of the concentrated material bottle 2 through an opening in the center of the concentrated material bottle 2; one opening of the concentrated material bottle 2 is a feeding port 8, one opening is a material temperature measuring hole 9 for inserting a thermometer 10 to measure the temperature of the material, and one opening is connected to a condenser 12 through a three-way pipe 11;

[0032] The vacuum condensation mechanism includes a condenser 12, a low-temperature constant-temperature water tank 20, a safety buffer 25 and a water circulation vacuum pump 23 connected to the top of the safety buffer 25 through a hose. The condenser 12 is connected to the concentrated material bottle 2 through a three-way pipe 11. The upper end of the condenser 12 is provided with a steam outlet 16, the upper side is provided with a cooling water return pipe 15, the lower end is provided with a liquid receiving pipe 17, and the lower side is provided with a cooling water inlet pipe 14. The liquid receiving pipe 17 is connected to a quantitative collection bottle 18; a water pump 21 and a fixing clamp 22 are respectively provided on both sides of the interior of the low-temperature constant-temperature water tank 20. The water pump 21 is connected to the cooling water inlet pipe 14, and the fixing clamp 22 is used to fix one end of the cooling water return pipe 15; the safety buffer 25 is connected to the liquid receiving pipe 17 through an exhaust pipe 28, and a separation grid 26 is provided in the middle of the safety buffer 25.

[0033] The method for concentrating the easily agglomerated material by using the quantitative concentration device comprises the following steps: adding 60% to 80% of the volume of water into a water bath 1, adding the material to be evaporated and concentrated into a concentrated material bottle 2, placing the concentrated material bottle 2 in the water bath 1 to heat the water bath, and turning on the high-speed disperser 6; placing the water pump 21 in a low-temperature constant-temperature water tank 20, turning on the power of the water pump 21, connecting the water pump 21 to the lower end of the condenser 12 through the condenser water inlet pipe 14, and discharging the condensed water from the upper end of the condenser 12 to the low-temperature constant-temperature water tank 2 through the condenser water outlet pipe 15. 0; the air inlet of the water circulation vacuum pump 23 is connected with the upper port of the safety buffer container 25 through a pipeline, a separation grid 26 is provided in the middle of the safety buffer container 25, and the lower port of the safety buffer container 25 is connected with the liquid receiving pipe 17 at the lower end of the condenser through an exhaust pipe 28, the power of the water circulation vacuum pump 23 is turned on, and the liquid in the high-speed disperser is heated and evaporated to form steam while stirring the material, which is cooled through the condenser 12 and finally flows into the quantitative collection bottle 18; the steam that is not completely condensed enters the safety buffer 25 through the exhaust pipe 28.

[0034] The use of a round-bottom concentrated material bottle in conjunction with a paddle-type dispersing tablet can better disperse slurry-like materials that are easy to agglomerate and easy to stratify; the use of a low-temperature constant-temperature water tank and a water pump in combination instead of tap water to cool the condenser can stably and continuously provide low-temperature cooling water, better cool and recover all evaporated water, accurately complete the evaporation and concentration operation, increase the cooling rate, and reduce the waste of tap water; a safety buffer is installed between the water circulation vacuum pump and the exhaust pipe connected to the condenser, which can self-condense and absorb the liquid vapor that is not completely condensed in the condenser again, avoiding the incompletely condensed liquid vapor from entering the water circulation vacuum pump and affecting the normal use of the water circulation vacuum pump; a quantitative collection bottle with a scale is used instead of an ordinary collection bottle, which solves the problem of how to determine the corresponding amount of materials to be evaporated and concentrated and the required evaporation and concentration time, and the water output of evaporation and concentration can be theoretically calculated in advance to determine the end time of evaporation and concentration.

[0035] In a preferred embodiment, two cross clamps 5 are provided on the column 3, which can be moved up and down on the column 3 for positioning; one is used to fix the high-speed disperser 6, and the other is used in combination with the universal clamp 4 to fix the concentrated material bottle 2. The cross clamp and the universal clamp on the column are used to fix the concentrated material bottle to prevent the concentrated material bottle from vibrating or moving.

[0036] In a preferred embodiment, the condenser tube 12 is fixed by an iron frame 13 with a universal clamp 4 disposed on the rear side thereof to prevent the condenser tube 12 from loosening and moving during the condensation process, thereby preventing the steam from leaking out.

[0037] In a preferred embodiment, the quantitative collection bottle 18 is placed on an experimental lifting platform 19, and the height of the quantitative collection bottle 18 can be adjusted by the experimental lifting platform 19 to better match the connection between the devices.

[0038] In a preferred embodiment, the safety buffer 25 is provided with a spherical top cover having a ground contact surface, which facilitates sealing and prevents air leakage.

[0039] In a preferred embodiment, a desiccant 27 is provided in the inner lower part of the safety buffer 25. The desiccant may be color-changing silica gel particles, which are used to absorb a small amount of water vapor in the vacuum exhaust pipe. At the same time, the amount of water vapor in the exhaust pipe can be judged by the change in color.

[0040] In a preferred embodiment, a cooling ice box 24 is provided in the water tank of the water circulation vacuum pump 23, which can solve the problem that the use effect of the water circulation vacuum pump is affected by the temperature rise during the use of the water circulation vacuum pump and the warm water in the water tank needs to be replaced from time to time.

[0041] In summary, the present invention adopts a high-speed disperser with stirring blades and a four-mouth round-bottom concentrated material bottle, which improves the dispersion stirring rate and reduces the possibility of material agglomeration or stratification when water evaporation is reduced during the heating process. The graduated collection bottle replaces the ordinary collection bottle, which solves the problem of how to make corresponding judgments due to the different amounts of materials to be evaporated and concentrated and the required evaporation and concentration time. The setting of the safety buffer can prevent the incompletely condensed liquid vapor from entering the water circulation vacuum pump and affecting the normal use of the water circulation vacuum pump. A certain amount of desiccant is placed at the bottom of the safety buffer to absorb a small amount of water vapor in the vacuum exhaust pipe. At the same time, the size of the water vapor contained in the exhaust pipe can be judged by the change in the color of the silica gel particles. A cooling ice box can be added to the water tank of the water circulation vacuum pump to keep the water circulation vacuum pump running normally.

[0042] It should be understood by those skilled in the art that the above embodiments are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A quantitative concentration device for easily agglomerated materials, comprising a high-efficiency evaporation concentration mechanism and a vacuum condensation mechanism, characterized in that: The high-efficiency evaporation and concentration mechanism comprises a water bath (1), a concentrated material bottle (2) placed in the water bath (1), a high-speed disperser (6) arranged on one side of the water bath (1), the high-speed disperser (6) being fixed by a column (3) provided with a cross clamp (5), and a stirring blade of the high-speed disperser (6) being arranged vertically in the concentrated material bottle (2) through an opening in the center thereof; The vacuum condensation mechanism comprises a condenser (12), a low-temperature constant-temperature water tank (20), a safety buffer (25), and a water circulation vacuum pump (23) connected to the upper side of the safety buffer (25) through a hose. The condenser (12) is connected to the concentrated material bottle (2) through a three-way pipe (11). The upper end of the condenser (12) is provided with a steam outlet (16), the upper side is provided with a cooling water return pipe (15), the lower end is provided with a liquid receiving pipe (17), and the lower side is provided with a cooling water inlet pipe (14). The liquid receiving pipe (17) is connected to the quantitative collection bottle (18); a water pump (21) and a fixing clamp (22) are respectively provided on both sides of the interior of the low-temperature constant-temperature water tank (20); the water pump (21) is connected to the cooling water inlet pipe (14); the fixing clamp (22) is used to fix one end of the cooling water return pipe (15); the safety buffer (25) is connected to the liquid receiving pipe (17) through an exhaust pipe (28); a separation grid (26) is provided in the middle of the safety buffer (25).

2. The quantitative concentration device according to claim 1, characterized in that: The concentrated material bottle (2) is a four-necked flask, wherein the central opening is vertically inserted into the stirring blade of the high-speed disperser, one opening is a feeding port (8), one opening is a material temperature measuring hole (9), and one opening is connected to a condenser (12) via a three-way pipe (11).

3. The quantitative concentration device according to claim 1, characterized in that: The column (3) is provided with two cross clamps (5), one of which is used to fix the high-speed disperser (6), and the other is used in combination with the universal clamp (4) to fix the concentrated material bottle (2).

4. The quantitative concentration device according to claim 1, characterized in that: The condenser (12) is a spherical condenser or a serpentine condenser.

5. The quantitative concentration device according to claim 1, characterized in that: The quantitative collection bottle (18) is placed on an experimental lifting platform (19), and the height of the quantitative collection bottle (18) is adjusted by the experimental lifting platform (19).

6. The quantitative concentration device according to claim 1, characterized in that: A desiccant (27) is disposed in the lower inner portion of the safety buffer (25).

7. The quantitative concentration device according to claim 1, characterized in that: The desiccant is color-changing silica gel particles.

8. The quantitative concentration device according to claim 1, characterized in that: A cooling ice box (24) is arranged in the water tank of the water circulation vacuum pump (23).

9. A method for concentrating easily agglomerated materials, characterized in that: The method comprises the following steps: adding 60% to 80% of water by volume into a water bath (1), adding materials to be evaporated and concentrated into a concentrated material bottle (2), placing the concentrated material bottle (2) in the water bath (1) to increase the temperature; placing a water pump (21) in a low-temperature constant-temperature water tank (20), turning on the power supply of the water pump (21), connecting the water pump (21) to the lower end of a condenser tube (12) through a condenser water inlet pipe (14), and discharging condensed water from the upper end of the condenser tube (12) into the low-temperature constant-temperature water tank (20) through a condenser water outlet pipe (15); and the air intake of a water circulation vacuum pump (23) The port is connected to the upper port of the safety buffer container (25) through a pipeline, a separation grid (26) is provided in the middle of the safety buffer container (25), and the lower port of the safety buffer container (25) is connected to the liquid receiving pipe (17) at the lower end of the condenser through an exhaust pipe (28). The power supply of the water circulation vacuum pump (23) is turned on, and while the high-speed disperser stirs the material, the liquid in the concentrated material bottle is heated and evaporated to form steam, which is cooled through the condenser (12) and finally flows into the quantitative collection bottle (18); the steam that is not completely condensed enters the safety buffer (25) through the exhaust pipe (28).

10. The method according to claim 9, characterized in that A desiccant (27) is arranged at the inner lower part of the safety buffer (25), and the steam entering the safety buffer (25) is absorbed by the desiccant (27).

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