Negative pressure energy-saving distillation tower
By introducing a storage tank and a rotary stirring system into the distillation column, the problems of heat loss and high power consumption in the negative pressure heating distillation column are solved, achieving an energy-saving and consumption-reducing distillation effect.
Patent Information
- Application Number
- CN202422869473.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing negative pressure heating distillation towers suffer from significant heat loss and high electrical energy consumption during distillation, resulting in high equipment costs and energy consumption.
The structure employs a liquid storage tank, heat exchange tubes, circulating pump, and transition plate. It utilizes high-temperature gas to heat the circulating liquid and drives the stirring blades through a rotating shaft to achieve heat preservation and stirring of the distillation column, reducing the need for motor drive.
It reduces equipment costs and energy consumption, and improves the heat utilization efficiency and distillation effect of the distillation process.
Smart Images
Figure CN223570046U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to distillation tower technical field, concretely is negative pressure energy -saving distillation tower. BACKGROUND
[0002] The distillation tower is the chemical equipment with high strength, great toughness, high temperature resistance, corrosion resistance, light specific gravity and other characteristics which is made of rare metal titanium and alloy materials; therefore is widely used in chemical industry, petroleum chemical industry, metallurgy, light industry, textile, alkali making, pharmacy, pesticide, electroplating, electronics and other fields. In the biological manufacturing industry, distillation purification is an indispensable step for semi-finished products, but currently, some chemical reagents are added and distillation is carried out through heating. The heating mode is generally divided into two kinds, namely electric heating and negative pressure heating.
[0003] And the existing negative pressure heating distillation tower produces steam in the distillation process, which can take away a large amount of heat, resulting in a large heat loss of distillation, and the use process needs to use the motor to stir, so that the power consumption is more. SUMMARY
[0004] The utility model discloses a negative pressure energy -saving distillation tower to solve the problem in prior art.
[0005] To achieve the above object, the utility model provides the following technical scheme:
[0006] The negative pressure energy -saving distillation tower, including distillation tower body, the exhaust port of distillation tower body upper end is communicated with the liquid storage tank through the collecting pipeline, the bottom of liquid storage tank is fixedly installed with circulating pump, the output of circulating pump is connected with the transition disc through the water pipeline, the transition disc is fixedly installed in the inside of base, the one end of transition disc is connected with the heat preservation cavity that distillation tower body side wall sets up through the water pipeline, the upper end of distillation tower body is provided with vacuum extraction piece, and the vacuum extraction piece is provided with pressure gauge, and the inside of distillation tower body is provided with stirring vane.
[0007] In a preferred embodiment, the lower end of the distillation tower body is provided with a feed inlet, the inside of the liquid storage tank is provided with a heat exchange pipe, the collecting pipeline is communicated with the heat exchange pipe, and the heat exchange pipe is a serpentine heat conducting pipe. The heat exchange pipe can absorb the heat of the gas in the collecting pipeline and heat the liquid in the liquid storage tank.
[0008] In a preferred embodiment, the transition disc is rotatably provided with a rotating shaft at the middle position, the rotating shaft penetrates through the top end side wall of the transition disc and is fixedly connected with a stirring shaft at the upper end, the stirring shaft penetrates through the bottom end side wall of the distillation tower body and is arranged in the inside of the distillation tower body, and the stirring vane is fixedly arranged on the stirring shaft. When the circulating liquid flows through the inside of the transition disc, the rotating shaft can be rotated, and the rotating shaft can drive the stirring shaft and the stirring vane to rotate.
[0009] In a preferred embodiment, a plurality of sealing plates are evenly arranged on the outer wall of the rotating shaft, rubber sealing pads are coated on the outer wall of the sealing plates, the sealing plates are sealingly arranged with the inner wall of the transition disc, and the inside of the collecting pipeline is provided with a control valve and a one-way valve.
[0010] In a preferred embodiment, a first sealing bearing is arranged at the connection between the rotating shaft and the side wall of the transition disc, and a second sealing bearing is arranged at the connection between the stirring shaft and the side wall of the distillation tower body, so as to ensure the sealing effect at the rotating shaft and the stirring shaft and prevent liquid leakage.
[0011] In a preferred embodiment, the upper end of the distillation tower body is provided with a circulating pipeline in communication with the inside of the liquid storage tank, and the circulating pipeline is in communication with the heat preservation cavity, so that the circulating liquid can be recycled and reused.
[0012] Compared with the prior art, the present application has the following advantages:
[0013] 1. The present application can realize heat preservation of the distillation tower body, prevent excessive heat loss of the distillation tower body, accelerate condensation of the discharged gas, and facilitate subsequent purification operation.
[0014] 2. The present application is provided with a transition disc, and the circulating liquid flows through the transition disc during circulation, so that the rotating shaft inside the transition disc is driven to rotate, the stirring shaft and the stirring blades are driven to rotate by the rotating shaft, the inside of the distillation tower body is stirred, and the use of motor is not required, which can reduce the cost of equipment and reduce the use of electric energy. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present application;
[0016] Figure 2 It is a schematic diagram of the local sectional structure of the present application;
[0017] Figure 3 It is a schematic diagram of the local sectional structure of the present application; Figure 2 It is an enlarged schematic diagram of the structure at A in the present application;
[0018] Figure 4It is the internal structure schematic view of the liquid storage tank of the utility model.
[0019] Figure 5 It is the sectional structure schematic view of the transition disc of the utility model.
[0020] Marked number in the drawing: 1, distillation tower body;2, collection pipeline;3, liquid storage tank;4, circulating pump;5, water delivery pipeline;6, transition disc;7, base;8, heat preservation cavity;9, vacuum extraction part;10, pressure gauge;11, stirring blade;12, feed inlet;13, heat exchange pipe;14, rotating shaft;15, stirring shaft;16, sealing plate;17, second sealing bearing;18, circulating pipeline;19, control valve. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0022] Embodiment: please refer to Figures 1-5 The utility model provides negative pressure energy -conserving distillation tower, technical scheme is as follows:
[0023] The negative pressure energy -conserving distillation tower, including distillation tower body 1, the exhaust port of distillation tower body 1 upper end is connected with the liquid storage tank 3 through the collection pipeline 2, the bottom of liquid storage tank 3 is fixedly installed with circulating pump 4, the output end of circulating pump 4 is connected with transition disc 6 through water delivery pipeline 5, transition disc 6 is fixedly installed in the inside of base 7, one end of transition disc 6 is connected with the heat preservation cavity 8 that is set up in the side wall of distillation tower body 1 through water delivery pipeline 5, the upper end of distillation tower body 1 is provided with vacuum extraction part 9 (since the composition of vacuum extraction part 9 is not the focus of this article, therefore here does not carry out too much description to vacuum extraction part 9, but needs to limit, through control vacuum extraction part 9 work, can maintain the negative pressure state in the inside of distillation tower body 1 during distillation), and vacuum extraction part 9 is provided with pressure gauge 10, and the inside of distillation tower body 1 is provided with stirring blade 11.
[0024] In a preferred embodiment, the lower end of the distillation tower body 1 is provided with a feed inlet 12, the inside of the liquid storage tank 3 is provided with a heat exchange pipe 13, the collection pipeline 2 is in communication with the heat exchange pipe 13, and the heat exchange pipe 13 is a serpentine heat conducting pipe. The high-temperature gas in the collection pipeline 2 enters the heat exchange pipe 13. The heat exchange pipe 13 is made of a high-thermal-conductivity metal pipe and is arranged in a serpentine structure, which can fully exchange heat between the heat and the circulating liquid.
[0025] In a preferred embodiment, the intermediate position of the transition disc 6 is provided with a rotating shaft 14, the upper end of the rotating shaft 14 penetrates through the top end side wall of the transition disc 6 and is fixedly connected with a stirring shaft 15, the upper end of the stirring shaft 15 penetrates through the bottom end side wall of the distillation tower body 1 and is arranged in the distillation tower body 1, the stirring blades 11 are fixedly arranged on the stirring shaft 15, a plurality of sealing plates 16 are uniformly arranged on the outer side wall of the rotating shaft 14, rubber sealing pads are coated on the outer side walls of the sealing plates 16, and the sealing plates 16 are sealingly arranged with the inner side wall of the transition disc 6.
[0026] Specifically, as shown in Figure 2 and Figure 3 When the circulating liquid enters into the transition disc 6 through the water conveying pipeline 5, under the action of water pressure, the circulating liquid can drive a certain sealing plate 16 to rotate due to the partition structure in the transition disc 6, the rotating shaft 14 can be driven to rotate when the sealing plate 16 rotates, the stirring shaft 15 and the stirring blades 11 are driven to rotate by the rotating shaft 14, the stirring of the raw materials is realized, and the raw materials are uniformly heated.
[0027] In a preferred embodiment, the connection position of the rotating shaft 14 and the side wall of the transition disc 6 is provided with a first sealing bearing, the connection position of the stirring shaft 15 and the side wall of the distillation tower body 1 is provided with a second sealing bearing 17, and the inside of the collecting pipeline 2 is provided with a control valve 19 and a one-way valve; the first sealing bearing and the second sealing bearing 17 can ensure the sealing effect at the positions of the rotating shaft 14 and the stirring shaft 15, so that liquid leakage is prevented, and the one-way valve can prevent external gas from being sucked into the inside of the distillation tower body 1 when vacuumizing.
[0028] In a preferred embodiment, the upper end of the distillation tower body 1 is provided with a circulating pipeline 18 in communication with the inside of the liquid storage tank 3, and the circulating pipeline 18 is in communication with the heat preservation cavity 8; the circulating pipeline 18 can realize recycling and reuse of the circulating liquid.
[0029] Working principle of the utility model:
[0030] When in use, the raw materials are introduced into the distillation tower body 1 through the feeding port 12, the inside of the distillation tower body 1 is vacuumized by the vacuum extraction piece 9, the feeding port 12 is sealed when vacuumizing, the control valve 19 is closed, the negative pressure heating distillation of the inside of the distillation tower body 1 is realized, when not needing negative pressure heating, the control valve 19 is opened, the high pressure steam in the inside of the distillation tower body 1 enters into the heat exchange pipe 13 in the inside of the liquid storage tank 3 through the collecting pipeline 2, the high temperature gas passes through the heat exchange pipe 13 to heat the circulating liquid in the inside of the liquid storage tank 3, after the circulating liquid is heated to a certain temperature, the circulating pump 4 is opened, the circulating pump 4 pumps the circulating liquid in the inside of the liquid storage tank 3 to the transition disc 6, the rotating shaft 14 is rotated by the thrust of the circulating liquid, when the circulating liquid in the inside of the transition disc 6 flows to the port of the water conveying pipeline 5, the circulating liquid flows into the heat preservation cavity 8 in the inside of the distillation tower body 1 through the water conveying pipeline 5, the heat preservation of the side wall of the distillation tower body 1 is realized, the heat loss of the inside of the distillation tower body 1 is reduced, when the rotating shaft 14 rotates, the stirring blade 11 can be rotated by the stirring shaft 15, the stirring blade 11 can stir the raw materials, so that the raw materials are heated more uniformly, through the intermittent negative pressure heating, the circulating liquid can circulate and flow, the heat preservation of the distillation tower body 1 is realized, the heat loss of the distillation tower body 1 is prevented, the condensation of the exhaust gas is accelerated, and the subsequent purification operation is facilitated.
[0031] It will be obvious to a person skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other concrete forms without departing from the spirit or essential characteristics of the utility model. Therefore, the embodiments should be regarded as exemplary and non-restrictive in any respect, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
Claims
1. Energy saving distillation column under negative pressure comprising a distillation column body (1) characterized by: The upper end exhaust port of the distillation tower body (1) is communicated with a liquid storage tank (3) through a collecting pipeline (2), the bottom end of the liquid storage tank (3) is fixedly installed with a circulating pump (4), the output end of the circulating pump (4) is connected with a transition disc (6) through a water conveying pipeline (5), the transition disc (6) is fixedly installed inside a base (7), one end of the transition disc (6) is connected with a heat preservation cavity (8) opened in the side wall of the distillation tower body (1) through the water conveying pipeline (5), the upper end of the distillation tower body (1) is provided with a vacuum extraction part (9), and the vacuum extraction part (9) is provided with a pressure gauge (10), and the inside of the distillation tower body (1) is provided with stirring blades (11).
2. The negative pressure energy saving distillation column according to claim 1, characterized in that: The lower end of the distillation tower body (1) is provided with a feed inlet (12), the inside of the liquid storage tank (3) is installed with a heat exchange pipe (13), the collecting pipeline (2) is communicated with the heat exchange pipe (13), and the heat exchange pipe (13) is a serpentine heat conducting pipe.
3. The negative pressure energy saving distillation column according to claim 1, characterized in that: The middle position of the transition disc (6) is rotationally provided with a rotating shaft (14), the upper end of the rotating shaft (14) penetrates through the top end side wall of the transition disc (6) and is fixedly connected with a stirring shaft (15), the upper end of the stirring shaft (15) penetrates through the bottom end side wall of the distillation tower body (1) and is arranged inside the distillation tower body (1), and the stirring blades (11) are fixedly arranged on the stirring shaft (15).
4. The negative pressure energy saving distillation column according to claim 3, characterized in that: A plurality of sealing plates (16) are uniformly arranged on the outer side wall of the rotating shaft (14), rubber sealing pads are covered on the outer side wall of the sealing plates (16), and the sealing plates (16) are sealingly arranged with the inner side wall of the transition disc (6).
5. The negative pressure energy saving distillation column according to claim 4, characterized in that: The connecting position of the rotating shaft (14) and the side wall of the transition disc (6) is provided with a first sealing bearing, the connecting position of the stirring shaft (15) and the side wall of the distillation tower body (1) is provided with a second sealing bearing (17), and the inside of the collecting pipeline (2) is provided with a control valve (19) and a one-way valve.
6. The negative pressure energy saving distillation column according to claim 1, characterized in that: The upper end of the distillation tower body (1) is provided with a circulating pipeline (18) communicated with the inside of the liquid storage tank (3), and the circulating pipeline (18) is communicated with the heat preservation cavity (8).