Ionic liquid concentration and purification system based on ceramic membrane and reverse osmosis membrane
Through the concentration technology combining extremely strong anti-pollution high-pressure reverse osmosis membrane system and ceramic membrane group, the problems of high energy consumption, high cost and low efficiency in the existing technology are solved, and efficient, energy-saving and environmentally friendly ionic liquid concentration is achieved, which is suitable for large-scale industrial applications.
Patent Information
- Application Number
- CN202422586870.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the prior art, the ionic liquid concentration method has high energy consumption, high cost and low efficiency, and the equipment is complex and cumbersome to operate, making it difficult to meet the needs of large-scale industrial applications.
Using a concentration technology combining an extremely strong anti-pollution high-pressure reverse osmosis membrane system and a ceramic membrane group, the low-concentration ionic liquid is concentrated to more than 80% through a two-stage concentration process, and efficient purification is achieved by combining an evaporation processor and purification unit.
It greatly reduces energy consumption, improves processing efficiency, simplifies operating procedures, reduces costs, improves the utilization rate and purity of ionic liquids, is highly adaptable, and is suitable for large-scale industrial applications.
Smart Images
Figure CN223249119U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ionic liquid concentration, in particular to an ionic liquid concentration and purification system based on a ceramic membrane and a reverse osmosis membrane. Background Art
[0002] Ionic liquids are ionic compounds that are liquid at or near room temperature. They possess excellent chemical and thermal stability and are widely used in various fields, such as chemical synthesis, electrochemical energy, and material separation and purification. As the applications of ionic liquids continue to expand, their concentration has become a key research topic. Because ionic liquids can become diluted during application, their concentration decreases, affecting their performance and effectiveness. Therefore, effectively concentrating low-concentration ionic liquids has become a pressing issue.
[0003] In the existing technology, evaporation and concentration are usually used to concentrate low-concentration ionic liquids. Although the existing technology has solved the problem of ionic liquid concentration to a certain extent, some limitations still exist. First, the existing evaporation and concentration methods have high energy consumption and high operating costs, which are a significant limitation for large-scale industrial applications. Second, the evaporation and concentration process is time-consuming, and the concentration effect of low-concentration ionic liquids is unstable. Ionic liquids are easily entrained in water, affecting the performance and application effect of reuse. Third, although ion exchange resins and chromatography technologies can achieve the purification and concentration of ionic liquids, their equipment is complex, the operation is cumbersome, and the cost is high, making it difficult to promote large-scale application. Utility Model Content
[0004] The purpose of the utility model is to provide an ionic liquid concentration and purification system based on a ceramic membrane and a reverse osmosis membrane to solve the deficiencies in the prior art.
[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is:
[0006] An ionic liquid concentration and purification system based on ceramic membranes and reverse osmosis membranes comprises: a low-concentration extractant storage tank, the liquid outlet end of the low-concentration extractant storage tank being connected to the liquid inlet end of a low-concentration extractant lift pump, the liquid outlet end of the low-concentration extractant lift pump being connected to the liquid inlet end of an extremely strong anti-pollution high-pressure reverse osmosis membrane system, the first liquid outlet end of the extremely strong anti-pollution high-pressure reverse osmosis membrane system being connected to the liquid inlet end of a concentrated liquid delivery pump, the liquid outlet end of the concentrated liquid delivery pump being connected to the liquid inlet end of a ceramic membrane group, the first liquid outlet end of the ceramic membrane group being connected to the liquid inlet end of an evaporation processor, and the liquid outlet end of the evaporation processor being connected to the liquid inlets of a recovered water storage tank and an ionic liquid storage tank, respectively.
[0007] Furthermore, the second liquid outlet end of the extremely strong anti-pollution high-pressure reverse osmosis membrane system intersects with the second liquid outlet end of the ceramic membrane group and is connected to the liquid inlet end of the concentrate lift pump. The liquid outlet end of the concentrate lift pump is connected to the liquid inlet end of the extremely high water production and low energy consumption reverse osmosis membrane group. The first liquid outlet end of the extremely high water production and low energy consumption reverse osmosis membrane group is connected to the liquid inlet end of the low-concentration extractant storage tank. The second liquid outlet end of the extremely high water production and low energy consumption reverse osmosis membrane group is connected to the liquid inlet end of the recovered water storage tank.
[0008] Furthermore, it also includes a purification unit, which includes: a TOC degrader, the liquid inlet end of the TOC degrader is connected to the liquid outlet end of the recovered water storage tank, the liquid outlet end of the TOC degrader is connected to a pleated filter, and the output end of the pleated filter is connected to the clean water storage tank.
[0009] The utility model provides an ionic liquid concentration and purification system based on ceramic membranes and reverse osmosis membranes, which has the following advantages over the existing technology:
[0010] 1. Energy saving and environmental protection: This utility model uses a highly anti-pollution high-pressure reverse osmosis membrane system and a ceramic membrane group to concentrate ionic liquids. Compared with traditional evaporation concentration methods, energy consumption is greatly reduced, efficiency is increased by more than 5 times, and it is more energy-saving and environmentally friendly. At the same time, the ionic liquid is first concentrated to 80%, and then separated by short steam separation, which greatly reduces the decomposition of the ionic liquid at high temperature, thereby improving the purity and quality of the ionic liquid;
[0011] 2. Easy to operate: The technical process of this utility model is simple and easy to operate. It does not require complicated equipment and tedious operating steps and is suitable for large-scale industrial applications. Compared with ion exchange resin and chromatography technology, the equipment of this utility model is simpler and the operation is easier, which reduces the difficulty and cost of operation.
[0012] 3. Efficient processing: The two-stage concentration system of this utility model first concentrates the ionic liquid concentration to 15% through an extremely anti-pollution high-pressure reverse osmosis membrane system, and then concentrates the 15% concentration of ionic liquid to more than 80% through a ceramic membrane group, which greatly improves the processing efficiency, reduces the energy consumption of subsequent short steam, greatly reduces the ionic liquid concentration time and processing cost, and can meet the needs of large-scale production;
[0013] 4. Improved utilization rate: The technical process of this utility model can effectively utilize low-concentration ionic liquids, improve the utilization rate of ionic liquids, and reduce resource waste, which is of great significance for the large-scale application and promotion of ionic liquids;
[0014] 5. Strong adaptability: The technical solution of this utility model is applicable to most ionic liquids on the market and has wide adaptability, which expands its application scope in various fields;
[0015] In general, compared with the existing technology, the utility model provides a more efficient, energy-saving and environmentally friendly ionic liquid concentration system, which has the advantages of simple operation, efficient purification, improved utilization rate and strong adaptability, and is expected to be widely used in the field of ionic liquid applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0017] Figure 1 It is a structural diagram of the present utility model.
[0018] In the figure: 1- low concentration extractant storage tank; 2- low concentration extractant lifting pump; 3- extremely anti-pollution high pressure reverse osmosis membrane system; 4- concentrate delivery pump; 5- ceramic membrane group; 6- concentrate lifting pump; 7- extremely high water production and low energy consumption reverse osmosis membrane group; 8- evaporation processor; 9- recovered water storage tank; 10- ionic liquid storage tank; 11- TOC degrader; 12- pleated filter; 13- clean water storage tank. DETAILED DESCRIPTION
[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments:
[0020] refer to Figure 1 As shown, the utility model provides an ionic liquid concentration and purification system based on ceramic membrane and reverse osmosis membrane, comprising: a low-concentration extractant storage tank 1, the liquid outlet end of the low-concentration extractant storage tank 1 is connected to the liquid inlet end of a low-concentration extractant lifting pump 2, the liquid outlet end of the low-concentration extractant lifting pump 2 is connected to the liquid inlet end of an extremely strong anti-pollution high-pressure reverse osmosis membrane system 3, the first liquid outlet end of the extremely strong anti-pollution high-pressure reverse osmosis membrane system 3 is connected to the liquid inlet end of a concentrated liquid delivery pump 4, the liquid outlet end of the concentrated liquid delivery pump 4 is connected to the liquid inlet end of a ceramic membrane group 5, the first liquid outlet end of the ceramic membrane group 5 is connected to the liquid inlet end of an evaporation processor 8, and the liquid outlet end of the evaporation processor 8 is respectively connected to the liquid inlets of a recovered water storage tank 9 and an ionic liquid storage tank 10.
[0021] As a preferred embodiment, the second liquid outlet end of the extremely strong anti-pollution high-pressure reverse osmosis membrane system 3 intersects with the second liquid outlet end of the ceramic membrane group 5 and is connected to the liquid inlet end of the concentrate lift pump 6. The liquid outlet end of the concentrate lift pump 6 is connected to the liquid inlet end of the extremely high water production and low energy consumption reverse osmosis membrane group 7. The first liquid outlet end of the extremely high water production and low energy consumption reverse osmosis membrane group 7 is connected to the liquid inlet end of the low-concentration extractant storage tank 1. The second liquid outlet end of the extremely high water production and low energy consumption reverse osmosis membrane group 7 is connected to the liquid inlet end of the recovered water storage tank 9.
[0022] As a preferred embodiment, it also includes a purification unit, which includes: a TOC degrader 11, the liquid inlet end of the TOC degrader 11 is connected to the liquid outlet end of the recovered water storage tank 9, the liquid outlet end of the TOC degrader 11 is connected to a pleated filter 12, and the output end of the pleated filter 12 is connected to the clean water storage tank 13.
[0023] The working process and principle of this utility model are:
[0024] Step 1: High-efficiency concentration of low-concentration ionic liquid using the highly resistant high-pressure reverse osmosis membrane system 3 and the customized ceramic membrane assembly 5. The specific steps include: Initially concentrating the low-concentration ionic liquid through the highly resistant high-pressure reverse osmosis membrane system 3 to obtain an ionic liquid concentrate of approximately 15%; then, further concentrating the 15% ionic liquid concentrate using the customized ceramic membrane assembly 5 to obtain a high-concentration ionic liquid concentrate of over 80%. During this process, the temperature is controlled between 25-35°C and the pressure is controlled between 1.5-2 MPa.
[0025] Step 2: Evaporation processor 8 processes the 80% ionic liquid, completely separating it from water, improving processing efficiency and reducing overall processing energy consumption. Specifically, the concentrated liquid produced by ceramic membrane assembly 5 is processed by evaporation processor 8, gradually separating the water and achieving complete separation of the ionic liquid and water. During this process, the temperature is controlled at 60°C under vacuum.
[0026] Step 3: The purified liquid produced by the customized ceramic membrane group 5 is processed through the ultra-high water yield and low energy consumption reverse osmosis membrane group 7 to purify the low-concentration ionic liquid and improve its utilization rate. The concentrated liquid continues to flow back to the ultra-strong anti-pollution high-pressure reverse osmosis membrane system 3. The specific steps include: the purified liquid produced during the concentration process is passed through the ultra-high water yield and low energy consumption reverse osmosis membrane group 7, the clean water flows into the purification system, and the low-concentration ionic liquid concentrate is circulated through the ultra-strong anti-pollution high-pressure reverse osmosis membrane system 3 for concentration and purification. During this process, the temperature is controlled at 25-35°C and the pressure is controlled at 1-1.4MPa.
[0027] Step 4: The water treated by a new set of ultra-high-yield, low-energy-consumption reverse osmosis membranes passes through the purification system again, reducing wastewater generation and mitigating environmental impact. The specific steps include: passing the purified liquid through the ultra-high-yield, low-energy-consumption reverse osmosis membrane group 7 to obtain water with a COD of less than 500 ppm; then, the water is further treated by passing it through a TOC degrader 11 and a pleated filter 12 to obtain household-grade water. Preferably, the pleated filter 12 uses a nanofiltration membrane to achieve resource recycling and reduce environmental pollution.
[0028] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 this application. 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 an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0029] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising 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 device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.
[0030] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.
Claims
1. An ionic liquid concentration and purification system based on ceramic membrane and reverse osmosis membrane, characterized in that: include: A low-concentration extractant storage tank (1) is provided, wherein the liquid outlet of the low-concentration extractant storage tank (1) is connected to the liquid inlet of a low-concentration extractant lifting pump (2), the liquid outlet of the low-concentration extractant lifting pump (2) is connected to the liquid inlet of an extremely strong anti-pollution high-pressure reverse osmosis membrane system (3), the first liquid outlet of the extremely strong anti-pollution high-pressure reverse osmosis membrane system (3) is connected to the liquid inlet of a concentrated liquid delivery pump (4), the liquid outlet of the concentrated liquid delivery pump (4) is connected to the liquid inlet of a ceramic membrane group (5), the first liquid outlet of the ceramic membrane group (5) is connected to the liquid inlet of an evaporation processor (8), and the liquid outlet of the evaporation processor (8) is respectively connected to the liquid inlets of a recovered water storage tank (9) and an ionic liquid storage tank (10).
2. The ionic liquid concentration and purification system based on ceramic membrane and reverse osmosis membrane according to claim 1, characterized in that: The second liquid outlet of the extremely strong anti-pollution high-pressure reverse osmosis membrane system (3) intersects with the second liquid outlet of the ceramic membrane group (5) and is then connected to the liquid inlet of the concentrated liquid lift pump (6); the liquid outlet of the concentrated liquid lift pump (6) is connected to the liquid inlet of the extremely high water production and low energy consumption reverse osmosis membrane group (7); the first liquid outlet of the extremely high water production and low energy consumption reverse osmosis membrane group (7) is connected to the liquid inlet of the low-concentration extractant storage tank (1); and the second liquid outlet of the extremely high water production and low energy consumption reverse osmosis membrane group (7) is connected to the liquid inlet of the recovered water storage tank (9).
3. The ionic liquid concentration and purification system based on ceramic membrane and reverse osmosis membrane according to claim 1, characterized in that: The invention also includes a purification unit, which includes a TOC degrader (11), wherein the liquid inlet end of the TOC degrader (11) is connected to the liquid outlet end of the recovered water storage tank (9), the liquid outlet end of the TOC degrader (11) is connected to a pleated filter (12), and the output end of the pleated filter (12) is connected to a clean water storage tank (13).