Hot-pressing distillation equipment

Abstract

The invention relates to hot-pressing distillation equipment which comprises a hot-pressing distilled water machine, the injection water thermal circulation module comprises a thermal circulation pipeline, a thermal circulation pump and a thermal circulation heat exchanger, the thermal circulation pump and the thermal circulation heat exchanger are arranged in the thermal circulation pipeline, and the thermal circulation heat exchanger is communicated with a water outlet of the hot-pressing water distiller; the water cooling module comprises a purified water distribution point and a raw material water cooling heat exchanger, the purified water distribution point is communicated with the raw material water cooling heat exchanger, and the raw material water cooling heat exchanger is communicated with a water inlet of the hot-pressing water distiller through a first pipeline. According to the scheme, the cooling working condition of the water cooling module can be utilized to heat the raw material water of the hot-pressing distilled water machine and cool the injection water at the water cooling module, the waste heat in the system is fully utilized, the cooling water consumption of the water cooling module is saved, the dependence on industrial steam and other external heat sources and the use amount are reduced, and the energy consumption is reduced. The system energy consumption and the operation cost are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of preparation of water for injection, and in particular to a hot-pressing distillation device. Background Art

[0002] Water for injection refers to water that complies with the provisions of the Chinese Pharmacopoeia under the item of water for injection. Water for injection is water obtained by distillation of distilled water or deionized water, so it is also called heavy distilled water. At present, the preparation methods of water for injection mainly include multiple-effect distillation and hot-pressing distillation. Multiple-effect distillation is a method of connecting several evaporators in series for evaporation operation, which is a distillation and desalination technology that saves heat. This method uses evaporators in series so that the heat source of the latter evaporator comes from the steam condensation heat of the previous evaporator, thereby realizing the step-by-step utilization of heat. Hot-pressing distillation is a method of using the boiling properties of liquid water under high temperature and pressure to separate pure steam from water, and then condense it into pure water through a condenser.

[0003] However, both distillation methods require the use of a large amount of industrial steam, which is used to preheat the raw material water to the evaporation temperature, resulting in high system energy consumption, high operating costs, and high dependence on external heat sources. Summary of the invention

[0004] Based on this, it is necessary to provide a hot pressure distillation equipment to address the problems of high dependence on external heat sources, high energy consumption and high cost of system operation.

[0005] The present application provides a hot pressure distillation device, which comprises:

[0006] Hot-pressed distilled water machine;

[0007] A water for injection heat circulation module, the water for injection heat circulation module comprising a heat circulation pipeline, a heat circulation pump and a heat circulation heat exchanger, the heat circulation pump and the heat circulation heat exchanger are respectively arranged in the heat circulation pipeline, and the heat circulation heat exchanger is connected to the water outlet of the hot pressure distilled water machine; and

[0008] A water cooling module, the water cooling module includes a purified water distribution point and a raw water cooling heat exchanger, the purified water distribution point is connected to the raw water cooling heat exchanger, and the raw water cooling heat exchanger is connected to the water inlet of the hot pressure distilled water machine through a first pipeline.

[0009] The hot-pressed distillation equipment of this scheme is used in the occasion of preparing water for injection. When working, the raw water flows into the hot-pressed distilled water machine, and is processed by the hot-pressed distilled water machine to prepare water for injection. The water for injection flows into the heat circulation pipeline, and is driven by the heat circulation pump to circulate along the heat circulation pipeline continuously. After heat exchange in the heat circulation heat exchanger, the temperature is increased to form high-temperature water for injection. The high-temperature water for injection (heat medium) flows into the raw water cooling heat exchanger, and then can be mixed with the purified water (refrigerant) that flows from the purified water distribution point into the raw water cooling heat exchanger. Heat exchange is carried out so that the heat of the high-temperature injection water is absorbed by the low-temperature purified water. The heated purified water flows into the hot-pressed distilled water machine and can be used to heat the raw water of the hot-pressed distilled water machine. In other words, this solution can utilize the cooling condition of the water cooling module to achieve the heating of the raw water of the hot-pressed distilled water machine and the cooling of the injection water at the water cooling module, making full use of the waste heat inside the system, saving the cooling water consumption of the water cooling module, reducing the dependence on and usage of external heat sources such as industrial steam, and reducing the system energy consumption and operating costs.

[0010] The technical solution of this application is further described below:

[0011] In one of the embodiments, the injection water thermal circulation module also includes an injection water storage tank, which is arranged in the thermal circulation pipeline, and the injection water storage tank is connected to the hot-pressed distilled water through a second pipeline.

[0012] In one of the embodiments, the hot pressure distillation equipment further includes a first control valve, and the first control valve is disposed in the first pipeline.

[0013] In one embodiment, the hot pressure distillation equipment further includes a second control valve, and the second control valve is disposed in the second pipeline.

[0014] In one of the embodiments, the hot pressure distillation equipment further includes a third control valve, and the third control valve is disposed in the heat circulation pipeline.

[0015] In one of the embodiments, the hot pressure distillation equipment further includes a fourth control valve, and the fourth control valve is arranged in the pipeline between the heat cycle heat exchanger and the raw water cooling heat exchanger.

[0016] In one embodiment, the hot-pressed distillation equipment also includes a controller, and a frequency converter is provided inside the hot-pressed distilled water machine to achieve variable frequency water production of the hot-pressed distilled water machine; a liquid level sensor is provided inside the injection water storage tank, and the frequency converter and the liquid level sensor are both electrically connected to the controller.

[0017] In one embodiment, the water cooling module also includes a cooling water distribution point and a cooling water cooling heat exchanger. The cooling water distribution point is connected to the cooling water cooling heat exchanger. The cooling water cooling heat exchanger is connected in series with the raw water cooling heat exchanger and is arranged at a downstream position of the raw water cooling heat exchanger away from the heat cycle heat exchanger.

[0018] In one embodiment, the water cooling module also includes an injection water product tank, which is connected to the cooling water cooling heat exchanger and is arranged at a downstream position of the cooling water cooling heat exchanger away from the raw water cooling heat exchanger.

[0019] In one embodiment, the hot pressure distillation equipment also includes a fifth control valve, a sixth control valve and a seventh control valve, the fifth control valve is connected between the purified water distribution point and the raw water cooling heat exchanger, the sixth control valve is connected between the cooling water distribution point and the cooling water cooling heat exchanger, and the seventh control valve is connected between the cooling water cooling heat exchanger and the injection water product tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] FIG1 is a schematic structural diagram of a hot pressure distillation device according to an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 100. Hot-pressed distillation equipment; 10. Hot-pressed distilled water machine; 20. Thermal circulation module for water for injection; 21. Thermal circulation pipeline; 22. Thermal circulation pump; 23. Thermal circulation heat exchanger; 24. Water for injection storage tank; 30. Water cooling module; 31. Purified water distribution point; 32. Raw water cooling heat exchanger; 33. Cooling water distribution point; 34. Cooling water cooling heat exchanger; 35. Water for injection product tank; 40. First pipeline; 50. Second pipeline; 60. First control valve; 60a. Second control valve; 60b. Third control valve; 60c. Fourth control valve; 60d. Fifth control valve; 60e. Sixth control valve; 60f. Seventh control valve. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application.

[0027] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0031] Please refer to FIG. 1 , which shows a hot pressure distillation device 100 according to an embodiment of the present application, which includes a hot pressure distillation water machine 10 , an injection water heat circulation module 20 , and a water cooling module 30 .

[0032] Among them, the hot-pressed distilled water machine 10 is an efficient and environmentally friendly pure water equipment. Its working principle is mainly to heat the raw water to boiling through the heater. After the water boils, it evaporates into water vapor. The water vapor forms a high-concentration water vapor in the evaporator. After being cooled by the condenser, the water vapor will condense into water to obtain pure water.

[0033] The main components of the hot-pressed distilled water machine 10 include a heater, an evaporator, a condenser, a water pump, a dehydrator, etc. Its general working process is as follows: Heating: The raw water is heated to boiling by the heater; Evaporation: The water evaporates into water vapor after boiling, and the water vapor forms a high-concentration water vapor in the evaporator; Condensation: The water vapor is cooled by the condenser and condensed into water droplets, which fall into the water tank; Collection: The collected water is pure water.

[0034] The injection water thermal circulation module 20 includes a thermal circulation pipeline 21, a thermal circulation pump 22 and a thermal circulation heat exchanger 23. The thermal circulation pump 22 and the thermal circulation heat exchanger 23 are respectively arranged in the thermal circulation pipeline 21, and the thermal circulation heat exchanger 23 is connected to the water outlet of the hot pressure distilled water machine 10; the water cooling module 30 includes a purified water distribution point 31 and a raw water cooling heat exchanger 32. The purified water distribution point 31 is connected to the raw water cooling heat exchanger 32, and the raw water cooling heat exchanger 32 is connected to the water inlet of the hot pressure distilled water machine 10 through the first pipeline 40.

[0035] In summary, the implementation of the technical solution of this embodiment will achieve the following beneficial effects: the hot pressure distillation equipment 100 of this solution is used in the occasion of preparing water for injection. When working, the raw water flows into the hot pressure distillation water machine 10, and is processed by the hot pressure distillation water machine 10 to prepare water for injection. The water for injection flows into the heat circulation pipeline 21, and is driven by the heat circulation pump 22 to circulate along the heat circulation pipeline 21. After heat exchange in the heat circulation heat exchanger 23, the temperature is increased to form high-temperature water for injection. The high-temperature water for injection (heat medium) flows into the raw water cooling heat exchanger 32, and can be combined with the raw water flowing into the raw water from the purified water distribution point 31. The purified water (refrigerant) in the water cooling heat exchanger 32 is heat exchanged so that the heat of the high-temperature injection water is absorbed by the low-temperature purified water. The heated purified water flows into the hot-pressed distilled water machine 10 and can be used to heat the raw water of the hot-pressed distilled water machine 10. In other words, this solution can utilize the cooling condition of the water cooling module 30 to achieve the heating of the raw water of the hot-pressed distilled water machine 10 and the cooling of the injection water at the water cooling module 30, making full use of the waste heat inside the system, saving the cooling water consumption of the water cooling module, reducing the dependence on and usage of external heat sources such as industrial steam, and reducing the system energy consumption and operating costs.

[0036] Please continue to refer to FIG. 1. On the basis of the above embodiment, the injection water thermal circulation module 20 further includes an injection water storage tank 24, which is arranged in the thermal circulation pipeline 21, and the injection water storage tank 24 is connected with the hot-pressed distilled water through the second pipeline 50. The injection water storage tank 24 can meet the storage needs of the injection water generated by the hot-pressed distilled water machine 10, thereby improving the water storage capacity of the equipment; in addition, the injection water flows at a higher speed in the thermal circulation pipeline 21, and the injection water entering the injection water storage tank 24 can be buffered to prevent impact noise and improve the silent effect of the equipment operation.

[0037] The bottom wall of the injection water storage tank 24 is provided with a residual water discharge port, which is used to discharge the residual injection water in the injection water storage tank 24 when the equipment is shut down for a long time or repaired.

[0038] Please continue to refer to FIG. 1. In addition, in another embodiment, the hot-pressed distillation device 100 further includes a first control valve 60, which is disposed in the first pipeline 40. The first control valve 60 can control the flow rate of purified water from the raw water cooling heat exchanger 32 into the hot-pressed distilled water machine 10, so that an appropriate amount of purified water flows in to meet the requirement of preheating the raw water of the hot-pressed distilled water machine 10 to the required evaporation temperature.

[0039] Specifically, the first control valve 60 can be any one of a manual valve, an electric control valve, etc., which can be flexibly selected according to actual needs and is not specifically limited here.

[0040] Furthermore, the thermocompression distillation device 100 further includes a second control valve 60a, which is disposed in the second pipeline 50. The second control valve 60a is used to control the amount of injection water flowing into the injection water storage tank 24, which ensures that there is enough injection water to participate in the thermal cycle and to flow to the water cooling module 30; on the other hand, it can also prevent the injection water storage tank 24 from overflowing due to excessive water, causing environmental pollution and waste of resources.

[0041] Specifically, the second control valve 60a can be any one of a manual valve, an electric control valve, etc., which can be flexibly selected according to actual needs and is not specifically limited here.

[0042] Please continue to refer to Figure 1. Further, the hot pressure distillation device 100 also includes a third control valve 60b, which is arranged in the heat circulation pipeline 21. The third control valve 60b is used to control the flow rate of injection water participating in flow heat exchange in the heat circulation pipeline 21 to adapt to different working conditions of the hot pressure distillation device 100.

[0043] Specifically, the third control valve 60b can be any one of a manual valve, an electric control valve, etc., which can be flexibly selected according to actual needs and is not specifically limited here.

[0044] In another embodiment, the hot pressure distillation device 100 further includes a fourth control valve 60c, which is disposed in the pipeline between the heat circulation heat exchanger 23 and the raw water cooling heat exchanger 32. The fourth control valve 60c is used to control the flow rate of the high-temperature injection water flowing from the heat circulation pipeline 21 into the raw water cooling heat exchanger 32, so that the flow rate of the high-temperature injection water is adapted to the flow rate of the purified water flowing from the purified water distribution point 31 into the raw water cooling heat exchanger 32, thereby ensuring the best heat exchange efficiency, so that the purified water fully absorbs heat and flows into the hot pressure distillation water machine 10 for preheating the raw water.

[0045] In addition, in order to ensure that the water consumption at the water cooling module 30 is synchronized with the water production of the hot-pressed distilled water machine 10, so as to maximize the energy utilization of the equipment and minimize the cooling water consumption, in an optional embodiment, the hot-pressed distillation equipment 100 also includes a controller, and a frequency converter is arranged inside the hot-pressed distilled water machine 10 to realize the variable frequency water production of the hot-pressed distilled water machine 10; a liquid level sensor is arranged inside the injection water storage tank 24, and the frequency converter and the liquid level sensor are both electrically connected to the controller.

[0046] The controller may be, but is not limited to, a PLC device, a microcontroller, or the like.

[0047] Please continue to refer to Figure 1. Based on any of the above embodiments, the water cooling module 30 also includes a cooling water distribution point 33 and a cooling water cooling heat exchanger 34. The cooling water distribution point 33 is connected to the cooling water cooling heat exchanger 34. The cooling water cooling heat exchanger 34 is connected in series with the raw water cooling heat exchanger 32 and is arranged at a downstream position of the raw water cooling heat exchanger 32 away from the heat cycle heat exchanger 23. The cooling water cooling heat exchanger 34 and the raw water cooling heat exchanger 32 form a dual cooler configuration. This redundant design enables the cooling water cooling heat exchanger 34 to effectively reduce the risk of system operation and ensure that the temperature of the use point is controllable.

[0048] Furthermore, the water cooling module 30 further includes an injection water product tank 35, which is connected to the cooling water cooling heat exchanger 34 and arranged downstream of the cooling water cooling heat exchanger 34 away from the raw water cooling heat exchanger 32. The injection water product tank 35 can store and collect redundant injection water for fixed-point supply.

[0049] For example, a water inlet is provided at the bottom of the injection water product tank 35 or on a side wall near the bottom, so that the user can conveniently take water for use. Alternatively, the injection water product tank 35 is detachable and replaceable, that is, when the current injection water product tank 35 is full of injection water, it can be replaced as a whole, so that the next empty injection water product tank 35 can continue to collect injection water.

[0050] In addition, the hot pressure distillation equipment 100 further includes a fifth control valve 60d, a sixth control valve 60e and a seventh control valve 60f, wherein the fifth control valve 60d is connected between the purified water distribution point 31 and the raw water cooling heat exchanger 32, the sixth control valve 60e is connected between the cooling water distribution point 33 and the cooling water cooling heat exchanger 34, and the seventh control valve 60f is connected between the cooling water cooling heat exchanger 34 and the injection water product tank 35. The fifth control valve 60d, the sixth control valve 60e and the seventh control valve 60f can respectively accurately control the flow of purified water, cooling water and injection water to ensure that the hot pressure distillation equipment 100 operates reliably and efficiently.

[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A hot pressure distillation device, characterized in that: include: Hot-pressed distilled water machine; A water for injection heat circulation module, the water for injection heat circulation module comprising a heat circulation pipeline, a heat circulation pump and a heat circulation heat exchanger, the heat circulation pump and the heat circulation heat exchanger are respectively arranged in the heat circulation pipeline, and the heat circulation heat exchanger is connected to the water outlet of the hot pressure distilled water machine; and A water cooling module, the water cooling module includes a purified water distribution point and a raw water cooling heat exchanger, the purified water distribution point is connected to the raw water cooling heat exchanger, and the raw water cooling heat exchanger is connected to the water inlet of the hot pressure distilled water machine through a first pipeline.

2. The hot pressure distillation equipment according to claim 1, characterized in that: The injection water thermal circulation module also includes an injection water storage tank, which is arranged in the thermal circulation pipeline, and the injection water storage tank is connected to the hot-pressed distilled water through a second pipeline.

3. The hot pressure distillation equipment according to claim 2, characterized in that: The hot pressure distillation equipment also includes a first control valve, which is arranged in the first pipeline.

4. The hot pressure distillation equipment according to claim 3, characterized in that: The hot pressure distillation equipment also includes a second control valve, which is arranged in the second pipeline.

5. The hot pressure distillation equipment according to claim 4, characterized in that: The hot pressure distillation equipment also includes a third control valve, which is arranged in the heat circulation pipeline.

6. The hot pressure distillation equipment according to claim 5, characterized in that: The hot pressure distillation equipment also includes a fourth control valve, which is arranged in the pipeline between the heat cycle heat exchanger and the raw water cooling heat exchanger.

7. The hot pressure distillation equipment according to claim 1, characterized in that: The hot-pressed distillation equipment also includes a controller. A frequency converter is arranged inside the hot-pressed distilled water machine to realize the variable frequency water production of the hot-pressed distilled water machine. A liquid level sensor is arranged inside the injection water storage tank. The frequency converter and the liquid level sensor are both electrically connected to the controller.

8. The hot pressure distillation equipment according to claim 1, characterized in that: The water cooling module also includes a cooling water distribution point and a cooling water cooling heat exchanger. The cooling water distribution point is connected to the cooling water cooling heat exchanger. The cooling water cooling heat exchanger is connected in series with the raw water cooling heat exchanger and is arranged at a downstream position of the raw water cooling heat exchanger away from the heat cycle heat exchanger.

9. The hot pressure distillation equipment according to claim 8, characterized in that: The water cooling module also includes an injection water product tank, which is connected to the cooling water cooling heat exchanger and is arranged at a downstream position of the cooling water cooling heat exchanger away from the raw water cooling heat exchanger.

10. The hot pressure distillation equipment according to claim 9, characterized in that: The hot pressure distillation equipment also includes a fifth control valve, a sixth control valve and a seventh control valve. The fifth control valve is connected between the purified water distribution point and the raw water cooling heat exchanger, the sixth control valve is connected between the cooling water distribution point and the cooling water cooling heat exchanger, and the seventh control valve is connected between the cooling water cooling heat exchanger and the injection water product tank.

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