Evaporation apparatus for a floatant containing sodium fatty acid

Abstract

The utility model relates to a kind of evaporation equipment of sodium-containing fatty acid floating agent, including evaporation tank, the discharge pipe of being inserted in the bottom of evaporation tank and with the inside of evaporation tank intercommunication, and the exhaust pipe of being inserted in the top side of evaporation tank and with the inside of evaporation tank intercommunication;Further including the liquid inlet pipe of being fixed vertically on the inner wall of evaporation tank, the lower end of liquid inlet pipe is sealed to the outside through the bottom side of evaporation tank and extends to the outside of evaporation tank, the upper end of liquid inlet pipe extends to the top of evaporation tank and is formed with bending section towards the inside center line direction of evaporation tank, and the end of bending section opening is vertically set downwards;The inside of evaporation tank is further provided with waste heat evaporation component located below the end opening of bending section, and the inside of evaporation tank is further provided with gas-liquid separation component located below waste heat evaporation component;The utility model has multiple-effect heating mode to speed up the evaporation speed and improve the heat energy utilization rate, so that the time required for evaporation is greatly shortened and energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to an evaporation device containing a flotation agent containing sodium fatty acid. Background Technology

[0002] Flotation reagents are various agents used in flotation to adjust the physicochemical properties of the feed minerals and the flotation medium, thereby widening the difference in hydrophilicity and hydrophobicity between gold minerals or gold-bearing minerals and gangue, so as to better separate them and improve the gold recovery rate.

[0003] Flotation agents containing sodium fatty acids are mainly used in the field of mineral flotation, especially for the separation of minerals such as phosphate rock, scheelite, and high-carbon chromite. This is because sodium fatty acids, as surfactants, can enhance the mineral separation effect through the hydrophilic and hydrophobic groups in their molecular structure.

[0004] The preparation of flotation agents containing sodium fatty acids involves multiple steps, and evaporation is one of the more important steps. The purpose of evaporation is to concentrate the solute into a solid to prepare for the subsequent recrystallization process. Existing evaporation equipment only has a single-effect heating mode, so the evaporation rate is slow and the thermal energy utilization rate is low, resulting in a long evaporation time and high energy consumption, which needs to be further improved. Utility Model Content

[0005] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide an evaporation device containing sodium fatty acid flotation agent that has multiple heating modes to accelerate the evaporation rate and improve the thermal energy utilization rate, thereby significantly shortening the evaporation time and reducing energy consumption.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: an evaporation device containing sodium fatty acid flotation agent, comprising an evaporation tank, a discharge pipe inserted into the bottom of the evaporation tank and communicating with the interior of the evaporation tank, and an exhaust pipe inserted into one side of the top of the evaporation tank and communicating with the interior of the evaporation tank, characterized in that: It also includes a liquid inlet pipe that is vertically fixed to the inner wall of the evaporator. The lower end of the liquid inlet pipe is sealed and passes through the bottom side of the evaporator and extends to the outside of the evaporator. The upper end of the liquid inlet pipe extends to the top of the evaporator and forms a bent section in the direction of the inner center line of the evaporator. The end opening of the bent section is set vertically downward. The evaporator is also equipped with a waste heat evaporation assembly located below the opening at the end of the bent section. The waste heat evaporation assembly includes multiple vertically arranged heat-conducting pipes that are concentrically fixed inside the evaporator from the inside out, a conical liquid-conducting ring that is inverted and concentrically fixed inside the evaporator and located above each heat-conducting pipe, and a conical diversion cover that is concentrically fixed above the conical liquid-conducting ring. The height of the upper opening of each heat pipe decreases from the outside to the inside. The upper opening of the outermost heat pipe is fixed in the through hole of the conical liquid guiding ring. The outer circumferential surface of the conical liquid guiding ring is sealed and fixed to the inner wall of the evaporator. The outer diameter of the conical diversion cover is smaller than the inner diameter of the evaporator. Between any two adjacent heat pipes, there is also an inverted and concentrically distributed conical heat-conducting ring. The outer circumferential surface of each conical heat-conducting ring is fixed to the inner wall of an outer heat pipe, and the inner circumferential surface of each conical heat-conducting ring is fixed to the upper opening of an inner heat pipe. Each of the heat pipes has multiple evenly distributed vent holes between its outer and inner circumferential surfaces.

[0007] Preferably, the interior of the evaporator is further provided with a gas-liquid separation component located below the waste heat evaporation component. The gas-liquid separation component includes an outlet pipe that is vertically and concentrically arranged below each heat conduction pipe, and a plurality of support bars that are fixed between the outer wall of the outlet pipe and the inner wall of the evaporator and are evenly arranged at equal angles along the circumference. The lower end opening of the outlet pipe is inclined downward and sealed, passes through the bottom side of the evaporator and extends to the outside of the evaporator.

[0008] Preferably, the gas-liquid separation assembly further includes a conical liquid-blocking cover concentrically disposed above the upper opening of the gas outlet pipe, and a plurality of support rods fixed between the inner wall of the conical liquid-blocking cover and the upper opening of the gas outlet pipe and evenly arranged at equal angles along the circumference, wherein the lower inner diameter of the outermost heat-conducting pipe is smaller than the outer diameter of the conical liquid-blocking cover.

[0009] Preferably, the evaporator is further provided with a grid diversion assembly located between the opening at the end of the bent section and the waste heat evaporation component. The grid diversion assembly includes a concentric and inverted conical guide ring inside the evaporator, a sleeve vertically fixed in the through hole of the conical guide ring, a plurality of first diversion strips horizontally fixed at the upper opening of the sleeve and arranged in parallel and distributed horizontally at equal intervals, and a plurality of second diversion strips horizontally fixed at the lower opening of the sleeve and arranged in parallel and distributed horizontally at equal intervals. The outer circumferential surface of the conical guide ring is sealed and fixed to the inner wall of the evaporator, and any second diversion strip is perpendicular to any first diversion strip.

[0010] Preferably, the interior of the evaporator is further provided with a diversion block located between the grid diversion assembly and the waste heat evaporation assembly. The top and bottom outer walls of the diversion block are provided with a plurality of inclined diversion holes, and the lower opening of each diversion hole is located above the conical diversion cover.

[0011] Preferably, the waste heat evaporation assembly further includes a circular mesh sheet arranged horizontally below multiple heat-conducting pipes, the outer edge of the circular mesh sheet being fixed to the inner wall of the evaporation tank, and the lower opening of each heat-conducting pipe being fixed to the top of the circular mesh sheet.

[0012] Compared with the prior art, the advantages of this utility model are as follows: This utility model first uses a grid diversion component and a diversion block to perform dual diversion of the flotation agent mixed reaction solution. At the same time, it uses a waste heat evaporation component to make full use of the heat in the water vapor during the discharge process. It also uses a gas-liquid separation component to discharge the water vapor at a lower position first. Thus, it has a multi-effect heating mode to accelerate the evaporation rate and improve the thermal energy utilization rate, thereby significantly shortening the time required for evaporation and reducing energy consumption. Attached Figure Description

[0013] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings: Figure 1 This is a top view of one side of the structure of this utility model; Figure 2 This is a front sectional view of the present invention. Figure 3 This is a top view of the structure of this utility model from another side. Detailed Implementation

[0014] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0015] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0016] like Figures 1-3As shown, an evaporation device containing a flotation agent of sodium fatty acid includes an evaporator 1, a discharge pipe 2 inserted into the bottom of the evaporator 1 and communicating with the interior of the evaporator 1, and an exhaust pipe 3 inserted into one side of the top of the evaporator 1 and communicating with the interior of the evaporator 1; the reaction solution is placed in the evaporator 1 and the evaporator 1 generates heat to heat the reaction solution. During the heating process, the water in the reaction solution vaporizes and rises, and is finally discharged to the outside through the exhaust pipe 3. The solubility of the reaction solution remaining in the evaporator 1 gradually increases. The above structure and principle are all existing technologies. The present invention is characterized in that it also includes a liquid inlet pipe 4 vertically fixed on the inner wall of the evaporator 1. The lower end of the liquid inlet pipe 4 is sealed and passes through the bottom side of the evaporator 1 and extends to the outside of the evaporator 1. The upper end of the liquid inlet pipe 4 extends to the top of the evaporator 1 and forms a bent section 41 in the direction of the inner center line of the evaporator 1. The end opening of the bent section 41 is set vertically downward. The interior of the evaporator 1 is also provided with a waste heat evaporation assembly 5 located below the opening at the end of the bent section 41. The waste heat evaporation assembly 5 includes multiple vertically arranged heat-conducting pipes 51 that are concentrically fixed inside the evaporator 1 from the inside out, a conical liquid-conducting ring 53 that is inverted and concentrically fixed inside the evaporator 1 and located above each heat-conducting pipe 51, and a conical diversion cover 54 that is concentrically fixed above the conical liquid-conducting ring 53. The height of the upper opening of each heat pipe 51 decreases from the outside to the inside. The upper opening of the outermost heat pipe 51 is fixed in the through hole of the conical liquid guiding ring 53. The outer circumferential surface of the conical liquid guiding ring 53 is sealed and fixed on the inner wall of the evaporator 1. The outer diameter of the conical diversion cover 54 is smaller than the inner diameter of the evaporator 1. Between any two adjacent heat pipes 51, there is also an inverted and concentrically distributed conical heat-conducting ring 52. The outer circumferential surface of each conical heat-conducting ring 52 is fixed on the inner wall of an outer heat pipe 51, and the inner circumferential surface of each conical heat-conducting ring 52 is fixed at the upper opening of an inner heat pipe 51. Multiple evenly distributed vent holes 511 are provided between the outer and inner circumferential surfaces of each heat pipe 51.

[0017] The interior of the evaporator 1 is also provided with a gas-liquid separation assembly 6 located below the waste heat evaporation assembly 5. The gas-liquid separation assembly 6 includes an outlet pipe 61 that is vertically and concentrically arranged below each heat conduction pipe 51, and a plurality of support bars 64 that are fixed between the outer wall of the outlet pipe 61 and the inner wall of the evaporator 1 and are evenly arranged at equal angles along the circumference. The lower end opening of the outlet pipe 61 is inclined downward and sealed, passes through the bottom side of the evaporator 1 and extends to the outside of the evaporator 1.

[0018] The gas-liquid separation assembly 6 also includes a conical liquid-blocking cover 62 concentrically positioned above the upper opening of the gas outlet pipe 61, and multiple support rods 63 fixed between the inner wall of the conical liquid-blocking cover 62 and the upper opening of the gas outlet pipe 61 and evenly arranged at equal angles along the circumference. The lower inner diameter of the outermost heat-conducting pipe 51 is smaller than the outer diameter of the conical liquid-blocking cover 62.

[0019] The evaporator 1 is also provided with a grid diversion assembly 7 located between the end opening of the bent section 41 and the waste heat evaporation assembly 5. The grid diversion assembly 7 includes a concentric and inverted conical guide ring 71 inside the evaporator 1, a sleeve 73 vertically fixed in the through hole of the conical guide ring 71, a plurality of first diversion bars 72 horizontally fixed at the upper opening of the sleeve 73 and arranged in parallel and distributed horizontally at equal intervals, and a plurality of second diversion bars 74 horizontally fixed at the lower opening of the sleeve 73 and arranged in parallel and distributed horizontally at equal intervals. The outer circumferential surface of the conical guide ring 71 is sealed and fixed on the inner wall of the evaporator 1, and any second diversion bar 74 is perpendicular to any first diversion bar 72.

[0020] The evaporator 1 is also provided with a diversion block 8 located between the grid diversion assembly 7 and the waste heat evaporation assembly 5. Multiple inclined diversion holes 81 are provided between the top outer wall and the bottom outer wall of the diversion block 8. The lower opening of each diversion hole 81 is located above the conical diversion cover 54.

[0021] Multiple columns 55 are also fixed between the top outer wall of the conical liquid guiding ring 53 and the bottom outer wall of the conical diversion cover 54 at equal angles along the circumference.

[0022] The waste heat evaporation assembly 5 also includes a circular mesh 56 arranged horizontally below multiple heat conduction pipes 51. The outer edge of the circular mesh 56 is fixed to the inner wall of the evaporation tank 1, and the lower opening of each heat conduction pipe 51 is fixed to the top of the circular mesh 56.

[0023] Working principle: The discharge pipe 2 is temporarily closed, and the flotation reagent mixed reaction solution is introduced into the interior of the inlet pipe 4 through the lower end of the inlet pipe 4, and then discharged downward through the end opening of its bent section 41. Next, the flotation reagent mixed reaction solution first falls onto the multiple first diversion bars 72 in the grid diversion assembly 7, then passes through each gap formed between any two adjacent first diversion bars 72 and enters the sleeve 73, then passes through each gap formed between any two adjacent second diversion bars 74 and falls onto the top of the diversion block 8, and then falls through each diversion hole 81 onto the top of the conical diversion cover 54 in the waste heat evaporation assembly 5. During this process, the flotation reagent mixed reaction solution splashed onto the top of the conical guide ring 71 will slowly flow along the conical guide ring 71. The solution falls at an angle, thus preventing it from stagnating on the conical guide ring 71. Because the diversion orifice 81 is angled, the residence time of the flotation reagent mixture in the diversion block 8 is increased. Furthermore, during this process, since the evaporator 1 has a heating function, the flotation reagent mixture entering the evaporator 1 gradually heats up as it falls, and a small amount of water begins to evaporate. The grid diversion assembly 7 and the diversion block 8 divide the flotation reagent mixture into multiple small-flow streams, allowing heat to be transferred to the flotation reagent mixture more quickly and easily. The design of the inlet pipe 4 extending upwards from the inside of the evaporator 1 allows the flotation reagent mixture flowing through the inlet pipe 4 to receive heat from inside the evaporator 1 to achieve residual heat.

[0024] Next, the flotation reagent mixture solution diffuses outwards along the top slope of the conical diversion cover 54 and falls to the top of the conical liquid guiding ring 53, then flows towards the center along the top slope of the conical liquid guiding ring 53; when the flotation reagent mixture solution flows to the through hole of the conical liquid guiding ring 53, it falls into the outermost heat-conducting pipe 51, then falls to the top of a conical heat-conducting ring 52 located inside the heat-conducting pipe 51, and then flows inwards along the top slope of the conical heat-conducting ring 52. The solution flows from the upper opening of a heat pipe 51 on one side to an inner heat pipe 51, then to the top of a conical heat-conducting ring 52 located inside the aforementioned heat pipe 51. This process continues until the flotation reagent mixture solution falls through the innermost heat pipe 51 to the top of the conical liquid-blocking cover 62 in the gas-liquid separation assembly 6. Then, the flotation reagent mixture solution spreads outwards along the slope of the top of the conical liquid-blocking cover 62 and finally falls to the bottom of the evaporator 1.

[0025] It is worth mentioning that the flotation reagent mixture solution accumulated at the bottom of the evaporator 1 will continuously evaporate water vapor under the continuous heating of the evaporator 1. Some of the water vapor will pass through the space between the conical liquid baffle 62 and the upper opening of the vent pipe 61 and enter the interior of the vent pipe 61, and then be discharged outward through the lower opening of the vent pipe 61; another part of the water vapor will rise upward, and some of the water vapor will pass through the circular mesh 56 to reach the bottom of the conical liquid guiding ring 53 and be blocked by the conical liquid guiding ring 53. The heat in the water vapor is transferred to the conical liquid guiding ring 53 and synergistically heats the flotation reagent mixture solution that subsequently falls to the top of the conical liquid guiding ring 53; the part of the water vapor blocked by the conical liquid guiding ring 53 will then pass inward through each heat conduction pipe in sequence. Multiple vents 511 in 51 are subsequently blocked by each conical heat-conducting ring 52, thereby synergistically heating the flotation reagent mixture reaction solution that subsequently falls to the top of each conical heat-conducting ring 52; another part of the water vapor located in the central region passing through the circular mesh 56 will pass upward through the annular space formed between any two adjacent heat-conducting pipes 51 and merge with the water vapor that has entered the interior of the heat-conducting pipe 51 through multiple vents 511, and then rise together, thereby heating the flotation reagent mixture reaction solution located in each heat-conducting pipe 51 and in the process of falling, so as to promote and accelerate the evaporation process. During this process, the water vapor after the temperature drops will turn back into water droplets and mix with the flotation reagent mixture reaction solution to drip downwards, thereby continuing to evaporate.

[0026] Next, the rising water vapor passes through each diversion hole 81 to the top of the diversion block 8, thereby co-heating the flotation reagent mixed reaction solution flowing through each diversion hole 81; subsequently, the water vapor continues to pass through the grid diversion assembly 7 and enters the exhaust pipe 3, and is then discharged outward; after evaporation is completed, the discharge pipe 2 is opened to output the reacted and concentrated flotation reagent.

[0027] This invention first uses the grid diversion component 7 and the diversion block 8 to perform dual diversion of the flotation agent mixed reaction solution. At the same time, the waste heat evaporation component 5 makes full use of the heat in the water vapor during the discharge process. Furthermore, the gas-liquid separation component 6 discharges the water vapor at a lower position first, thus achieving a multi-effect heating mode to accelerate the evaporation rate and improve the thermal energy utilization rate, thereby significantly shortening the evaporation time and reducing energy consumption.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An evaporation device containing a flotation agent of sodium fatty acid, comprising an evaporator, a discharge pipe inserted into the bottom of the evaporator and communicating with the interior of the evaporator, and an exhaust pipe inserted into one side of the top of the evaporator and communicating with the interior of the evaporator, characterized in that: It also includes a liquid inlet pipe that is vertically fixed to the inner wall of the evaporator. The lower end of the liquid inlet pipe is sealed and passes through the bottom side of the evaporator and extends to the outside of the evaporator. The upper end of the liquid inlet pipe extends to the top of the evaporator and forms a bent section in the direction of the inner center line of the evaporator. The end opening of the bent section is set vertically downward. The evaporator is also equipped with a waste heat evaporation assembly located below the opening at the end of the bent section. The waste heat evaporation assembly includes multiple vertically arranged heat-conducting pipes that are concentrically fixed inside the evaporator from the inside out, a conical liquid-conducting ring that is inverted and concentrically fixed inside the evaporator and located above each heat-conducting pipe, and a conical diversion cover that is concentrically fixed above the conical liquid-conducting ring. The height of the upper opening of each heat pipe decreases from the outside to the inside. The upper opening of the outermost heat pipe is fixed in the through hole of the conical liquid guiding ring. The outer circumferential surface of the conical liquid guiding ring is sealed and fixed to the inner wall of the evaporator. The outer diameter of the conical diversion cover is smaller than the inner diameter of the evaporator. Between any two adjacent heat pipes, there is also an inverted and concentrically distributed conical heat-conducting ring. The outer circumferential surface of each conical heat-conducting ring is fixed to the inner wall of an outer heat pipe, and the inner circumferential surface of each conical heat-conducting ring is fixed to the upper opening of an inner heat pipe. Each of the heat pipes has multiple evenly distributed vent holes between its outer and inner circumferential surfaces.

2. The evaporation equipment for a flotation agent containing sodium fatty acid according to claim 1, characterized in that, The evaporator is also equipped with a gas-liquid separation component located below the waste heat evaporation component. The gas-liquid separation component includes an outlet pipe that is vertically and concentrically located below each heat conduction pipe, and multiple support bars that are fixed between the outer wall of the outlet pipe and the inner wall of the evaporator and are evenly arranged at equal angles along the circumference. The lower end of the outlet pipe is inclined downward and sealed, passes through the bottom side of the evaporator and extends to the outside of the evaporator.

3. The evaporation equipment for a flotation agent containing sodium fatty acid according to claim 2, characterized in that, The gas-liquid separation assembly also includes a conical liquid-blocking cover concentrically positioned above the upper opening of the gas outlet pipe, and multiple support rods fixed between the inner wall of the conical liquid-blocking cover and the upper opening of the gas outlet pipe and evenly arranged at equal angles along the circumference. The inner diameter of the lower end of the outermost heat-conducting pipe is smaller than the outer diameter of the conical liquid-blocking cover.

4. The evaporation equipment for a flotation agent containing sodium fatty acid according to claim 1, characterized in that, The evaporator is further provided with a grid diversion assembly located between the end opening of the bent section and the waste heat evaporation component. The grid diversion assembly includes a concentric and inverted conical guide ring inside the evaporator, a sleeve vertically fixed in the through hole of the conical guide ring, a plurality of first diversion strips horizontally fixed at the upper opening of the sleeve and arranged in parallel and distributed horizontally at equal intervals, and a plurality of second diversion strips horizontally fixed at the lower opening of the sleeve and arranged in parallel and distributed horizontally at equal intervals. The outer circumferential surface of the conical guide ring is sealed and fixed to the inner wall of the evaporator, and any second diversion strip is perpendicular to any first diversion strip.

5. An evaporation apparatus for a flotation agent containing sodium fatty acid according to claim 4, characterized in that, The evaporator is also equipped with a flow divider block located between the grid flow divider assembly and the waste heat evaporation assembly. Multiple inclined flow divider holes are opened between the top outer wall and the bottom outer wall of the flow divider block. The lower opening of each flow divider hole is located above the conical flow divider cover.

6. The evaporation equipment for a flotation agent containing sodium fatty acid according to claim 1, characterized in that, The waste heat evaporation assembly also includes a circular mesh sheet arranged horizontally below multiple heat-conducting pipes. The outer edge of the circular mesh sheet is fixed to the inner wall of the evaporation tank, and the lower opening of each heat-conducting pipe is fixed to the top of the circular mesh sheet.

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