Modularized parallel operation adsorption system

Abstract

The invention belongs to the field of adsorption, and discloses a modular parallel operation adsorption system, which consists of a plurality of adsorption columns and a plurality of multi-way valves for controlling materials to be distributed in different adsorption columns. And by controlling the multi-way valve, parallel operation of multiple columns can be realized, so that different application requirements are met. Compared with a traditional fixed bed adsorption device based on a two-way valve, the system is small in number of valves and simple in structure and operation method. Besides, aiming at a multi-column series-connection adsorption mode, the system can realize simultaneous water washing and elution and interval alternate operation of water washing and elution by controlling a multi-way valve under the condition of meeting continuous adsorption, so that the use of adsorption columns and adsorption materials is reduced to the maximum extent, and the utilization rate of the adsorption materials is improved.

Description

[0001] This application is a divisional application. The application date of the original application is February 20, 2025, the application number is 2025101856510, and the name of the invention is: A multi-way valve and its series-parallel multi-mode adsorption system. Technical Field

[0002] The invention belongs to the field of adsorption, in particular to a modular parallel operation adsorption system. Background Art

[0003] Adsorption is a common unit operation in the chemical industry, widely used for the separation and enrichment of substances. Adsorption systems are used in these operations. Fixed-bed and continuously moving-bed systems are two common types of adsorption systems. These systems primarily consist of adsorption towers (columns), connecting pipes, valves, and control systems.

[0004] The traditional fixed bed adsorption system has the advantages of small investment and simple structure. However, in order to realize the adsorption, water washing, regeneration and other functions of multiple adsorption columns and their switching, the system has many valves, and the logic of controlling the numerous valves is complex. In addition, the utilization rate of adsorption materials in the fixed bed adsorption system is low. Although the continuous moving bed system effectively solves the problem of low utilization of adsorption materials, the energy consumption of related equipment is high and the system structure is complex. To solve these problems, Chinese patent CN104667999A discloses a new ion exchange system based on a multi-way valve. By using a multi-way valve instead of a traditional two-way valve, it solves the problems of the traditional fixed bed having many valves and the high energy consumption of the continuous moving bed. However, the system contains only three independent adsorption modules at most, the system adaptability is poor, and the logic of controlling the multi-way valve is complex. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a modular parallel operation adsorption system. By simply operating the multi-way valve, multiple adsorption columns can be operated in parallel, thereby improving the utilization rate of the adsorption material while simplifying the system structure and operation method.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A first aspect of the present invention discloses a multi-way valve, comprising a valve housing and a valve core, wherein the valve housing has multiple first interfaces and multiple second interfaces, the valve core has multiple channels, the number of channels is the same as the number of first interfaces, each channel has an inlet and an outlet, the inlet of the channel is connected to the first interface, and the outlets of the multiple channels are radially evenly arranged, the valve core can rotate in the valve housing, and when the valve core is rotated, the inlet of the channel is always connected to the first interface, and the outlet of any channel can be controlled to connect to the second interface by rotating the valve core.

[0008] Furthermore, the multi-way valve is a four-position four-way valve, the valve housing has four first interfaces and one second interface, the valve core has four channels, and by rotating the valve core of the four-position four-way valve 90° in sequence, the outlets of the four channels can be connected to the second interface in sequence.

[0009] Furthermore, the multi-way valve is an eight-position eight-way valve, the valve housing has 8 first interfaces and 2 second interfaces, the valve core has 8 channels, the angle between the 2 second interfaces is 45°, and by rotating the valve core, the outlets of any two adjacent channels of the valve core can be connected to the 2 second interfaces.

[0010] Furthermore, the multi-way valve is a three-position three-way valve, the valve housing has three first interfaces and one second interface, and the valve core has three channels. By rotating the valve core of the three-position three-way valve 120° in sequence, the outlets of the three channels can be connected to the second interface in sequence.

[0011] Furthermore, the multi-way valve is a six-position six-way valve, the valve housing has six first interfaces and two second interfaces, the valve core has six channels, the angle between the two second interfaces is 60°, and by rotating the valve core, the outlets of any two adjacent channels of the valve core can be connected to the two second interfaces.

[0012] On the other hand, the present invention discloses a series-parallel multi-mode adsorption system based on the multi-way valve, which includes multiple adsorption columns and multiple multi-way valves. By combining the multi-way valves, the parallel operation of multiple adsorption columns or the series operation of multiple adsorption columns can be achieved.

[0013] Furthermore, the system includes n (n≥1) adsorption columns and 2n (n≥1) four-position four-way valves, one adsorption column and two four-position four-way valves constitute an adsorption unit, the valve housing of the four-position four-way valve has four first interfaces and one second interface, the valve core has four channels, in each adsorption unit, the inlet and outlet of the adsorption column are respectively connected to the second interfaces of the two four-position four-way valves, in the same adsorption unit, the four first interfaces of the four-position four-way valve connected to the inlet of the adsorption column are respectively connected to the raw liquid input pipe, the eluent input pipe, the clean water input pipe for washing the raw liquid, and the clean water input pipe for washing the eluent, and the four first interfaces of the four-position four-way valve connected to the outlet of the adsorption column are respectively connected to the raw liquid output pipe, the eluent output pipe, the clean water output pipe for washing the raw liquid, and the clean water output pipe for washing the eluent. During the operation of the system, the adsorption column in the adsorption unit is switched between adsorption, water washing, and elution by simultaneously rotating the valve cores of the two four-position four-way valves in the corresponding adsorption unit by 90° clockwise or counterclockwise.

[0014] Furthermore, the system includes n (n≥1) adsorption columns and n (n≥1) eight-position eight-way valves, one adsorption column and one eight-position eight-way valve constitute an adsorption unit, the valve housing of the eight-position eight-way valve has eight first interfaces and two second interfaces, the valve core has eight channels, the two second interfaces of the eight-position eight-way valve are respectively connected to the inlet and outlet of the same adsorption column, the eight first interfaces of the valve housing of the eight-position eight-way valve are respectively connected to the raw liquid input pipe, the raw liquid output pipe, the eluent input pipe, the eluent output pipe, the clean water input pipe for washing the raw liquid, the clean water output pipe for washing the raw liquid, the clean water input pipe for washing the eluent, and the clean water output pipe for washing the eluent. During the operation of the system, the adsorption column connected to the eight-position eight-way valve is switched between adsorption, water washing and elution by rotating the valve core of the corresponding eight-position eight-way valve 90° clockwise or counterclockwise.

[0015] Furthermore, when the number of adsorption columns n≥2, the system includes n (n≥2) adsorption columns, n (n≥2) eight-position eight-way valves and n (n≥2) six-position four-way valves, the valve housing of the eight-position eight-way valve has 8 first interfaces and 2 second interfaces, the valve core has 8 channels, the two second interfaces of the eight-position eight-way valve are respectively connected to a six-position four-way valve, the inlet and outlet of the adsorption column are respectively connected to two six-position four-way valves, the series / parallel connection of adjacent adsorption columns is controlled by the six-position four-way valve, and the entry and switching of materials are controlled by the eight-position eight-way valve.

[0016] Furthermore, it includes n (n≥1) adsorption columns and 2n (n≥1) three-position three-way valves, and one adsorption column and two three-position three-way valves constitute an adsorption unit. The valve housing of the three-position three-way valve has three first interfaces and one second interface, and the valve core has three channels. In each adsorption unit, the inlet and outlet of the adsorption column are respectively connected to the second interfaces of the two three-position three-way valves. In the same adsorption unit, the three first interfaces of the three-position three-way valve connected to the inlet of the adsorption column are respectively connected to the raw liquid input pipe, the eluent input pipe, and the clean water input pipe for washing the raw liquid / the clean water input pipe for washing the eluent, and the three first interfaces of the three-position three-way valve connected to the outlet of the adsorption column are respectively connected to the raw liquid output pipe, the eluent output pipe, and the clean water output pipe for washing the raw liquid / the clean water output pipe for washing the eluent. During the operation of the system, the adsorption column in the adsorption unit is switched between adsorption, water washing and elution by rotating the valve cores of the two three-position three-way valves in the corresponding adsorption unit 120° clockwise or counterclockwise at the same time.

[0017] Furthermore, it includes n (n≥1) adsorption columns and n (n≥1) six-position six-way valves, and one adsorption column and one six-position six-way valve constitute an adsorption unit. The valve housing of the six-position six-way valve has six first interfaces and two second interfaces, and the valve core has six channels. The two second interfaces of the six-position six-way valve are respectively connected to the inlet and outlet of the same adsorption column. The six first interfaces of the valve housing of the six-position six-way valve are respectively connected to the raw liquid input pipe, the eluent input pipe, the clean water input pipe for washing the raw liquid / the clean water input pipe for washing the eluent, the raw liquid output pipe, the eluent output pipe, the clean water output pipe for washing the raw liquid / the clean water output pipe for washing the eluent. During the operation of the system, the adsorption column connected to the six-position six-way valve is switched between adsorption, water washing and elution by rotating the valve core of the corresponding six-position six-way valve 120° clockwise or counterclockwise.

[0018] Furthermore, the six-position four-way valve has a valve housing and a valve core, the side wall of the valve core is radially and evenly provided with three channels, the valve housing is provided with four interfaces, and the angle between two adjacent interfaces is 60°. By rotating the valve core of the six-position four-way valve, any channel of the valve core is allowed to communicate with any two adjacent interfaces on the valve housing.

[0019] Furthermore, the two second interfaces of the eight-position eight-way valve are interface q and interface r respectively.

[0020] The four interfaces of the six-position four-way valve are interface a, interface b, interface c, and interface d.

[0021] The q interface and r interface of two adjacent eight-position eight-way valves are respectively connected to the a interface and d interface of the same six-position four-way valve, and the r interface of the last-stage eight-position eight-way valve is connected to the d interface of the six-position four-way valve connected to the first-stage adsorption column; the b interface and c interface of two adjacent six-position four-way valves are respectively connected to the inlet and outlet of the same adsorption column, and the b interface of the last-stage six-position four-way valve is connected to the c interface of the first-stage six-position four-way valve.

[0022] When the system is running, the eight first interfaces of the eight-position eight-way valve housing are respectively connected to the raw liquid input pipe, the raw liquid output pipe, the eluent input pipe, the eluent output pipe, the clean water input pipe for washing the raw liquid, the clean water output pipe for washing the raw liquid, the clean water input pipe for washing the eluent, and the clean water output pipe for washing the eluent. By rotating the valve core of the eight-position eight-way valve in the corresponding adsorption unit by 120° clockwise or counterclockwise, the adsorption column in the adsorption unit can be switched between adsorption, water washing and elution; by rotating the valve core of the corresponding six-position four-way valve by 60° clockwise or counterclockwise, the two adjacent adsorption columns connected to the six-position four-way valve can be connected in series or in parallel.

[0023] The advantages and positive effects of the present invention are:

[0024] The adsorption system of the present invention adopts a multi-way valve instead of a traditional two-way valve, which not only greatly reduces the number of valves, but also simplifies the system structure and operation method; the system can arbitrarily increase the number of adsorption columns according to actual needs, and only by controlling the rotation of the multi-way valve, it can realize parallel operation of multiple columns or series operation of multiple columns, thereby meeting different application needs; through the control of the multi-way valve, the system can realize simultaneous water washing and elution, and intermittent alternating operation of water washing and elution under the condition of meeting continuous adsorption, thereby maximizing the reduction in the use of adsorption columns and adsorption materials, and improving the utilization rate of adsorption materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the adsorption system structure in Example 1;

[0026] Figure 2 Schematic diagram of the structure of the eight-position eight-way valve in Example 1, wherein A is a top perspective view of the eight-position eight-way valve; B is a front perspective view of the eight-position eight-way valve; C is a top perspective view of the eight-position eight-way valve after the valve core is rotated 90° clockwise;

[0027] Figure 3 Schematic diagram of the structure of the six-position four-way valve in Example 1, wherein A is a top perspective view of the six-position four-way valve; B is a front perspective view of the six-position four-way valve; C is a top perspective view of the six-position four-way valve in A after the valve core is rotated 60° counterclockwise;

[0028] Figure 4 This is a schematic structural diagram of the adsorption system in Example 1 in the operation state between water washing and elution;

[0029] Figure 5 This is a structural diagram of the adsorption system in Example 1 in which the adsorption columns are operated in parallel;

[0030] Figure 6 Schematic diagram of the adsorption system structure in Example 2;

[0031] Figure 7 Schematic diagram of the adsorption system structure in Example 3;

[0032] Figure 8 Schematic diagram of the adsorption system structure in Example 4;

[0033] Figure 9 Schematic diagram of the adsorption system structure in Example 5;

[0034] Figure 10 Schematic diagram of the adsorption system structure in Example 6;

[0035] Figure 11Schematic diagram of the structure of the four-position four-way valve in Example 6, wherein A is a top perspective view of the four-position four-way valve; B is a front perspective view of the four-position four-way valve; C is a top perspective view of the four-position four-way valve in A after the valve core is rotated 90° clockwise;

[0036] Figure 12 Schematic diagram of the adsorption system structure in Example 7;

[0037] Figure 13 Schematic diagram of the structure of the three-position three-way valve in Example 7, wherein A is a top perspective view of the three-position three-way valve; B is a front perspective view of the three-position three-way valve; C is a top perspective view of the three-position three-way valve in A after the valve core is rotated 120° clockwise;

[0038] Figure 14 Schematic diagram of the adsorption system structure in Example 8;

[0039] Figure 15 Schematic diagram of the structure of the six-position six-way valve in Example 8, wherein A is a top perspective view of the six-position six-way valve; B is a front perspective view of the six-position six-way valve; and C is a top perspective view of the six-position six-way valve in A after the valve core is rotated 120° clockwise.

[0040] Explanation of the numbers in the figure: 1-4 or 58-61 are the raw liquid inlet, eluent inlet, clean water inlet for washing the raw liquid, and clean water inlet for washing the eluent, respectively; 5-8 or 62-65 are the raw liquid outlet, eluent outlet, clean water outlet for washing the raw liquid, and clean water outlet for washing the eluent, respectively; 9-14, 27-30, 39-41, 48-50, 54-55 are all eight-position eight-way valves; 15-20, 31-34, 42-44 are all six-position four-way valves; 21-26, 35-38, 45-47, 51-53, 56-57, 72-74, 81-83, 87-89 are all adsorption columns; 66-71 are all four-position four-way valves; 75-80 are all three-position three-way valves; 84-86 are all six-position six-way valves. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and non-restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0042] Example 1

[0043] An adsorption system based on a series-parallel multi-mode adsorption system with an eight-position eight-way valve and a six-position four-way valve, which is composed of six adsorption columns, six eight-position eight-way valves and six six-position four-way valves. Figure 1 As shown in the figure, one adsorption column and one eight-position eight-way valve constitute one adsorption unit, for a total of six units. The six-position four-way valve between the two eight-position eight-way valves controls the series or parallel connection of two adjacent adsorption columns.

[0044] The top and front perspective views of the eight-position eight-way valve are shown in Figure 2 A and B in the middle; the eight-position eight-way valve includes a valve housing and a valve core. The valve housing has eight first interfaces (i to p interfaces) and two second interfaces (q interface, r interface). The valve core has eight channels (a to h channels). The channel inlets are connected to the first interfaces. The outlets of the eight channels are evenly arranged radially. The angle between the two second interfaces is 45 degrees. The valve core can rotate within the valve housing. When the valve core is rotated, the outlets of any two adjacent channels of the valve core can be connected to the two second interfaces. The top of the valve housing contains four first interfaces, i to l. These four first interfaces are connected to the inlets of the e to h channels of the valve core respectively through four circular liquid distribution rings on the top, that is, the i interface is connected to the g channel inlet, the j interface is connected to the e channel inlet, the k interface is connected to the f channel inlet, and the l interface is connected to the h channel inlet. The bottom of the valve housing of the 8-position, 8-way valve contains four primary ports, m through p, which connect to channels a through d of the valve core through four circular liquid distribution rings. Port m connects to the inlet of channel c, port n connects to the inlet of channel a, port o connects to the inlet of channel b, and port p connects to the inlet of channel d. By rotating the circular valve core of the 8-position, 8-way valve, the outlets of any two adjacent channels of the circular valve core can be connected to the two secondary ports, q and r. Figure 2 The state of the valve core of the eight-position eight-way valve shown in A after rotating 90° clockwise is as follows Figure 2 As shown in C.

[0045] like Figure 3 The six-position four-way valve shown in FIG. includes a valve housing and a valve core. The top perspective view and the front perspective view of the six-position four-way valve are shown in FIG. Figure 3 A and B. The circular valve core of the six-position four-way valve is divided into six sectors, and there is a gap (channel) between each of the two adjacent sectors, for a total of three gaps. The side of the valve housing of the six-position four-way valve contains four interfaces a to d. The angle between two adjacent interfaces is 60°, and by rotating the valve core of the six-position four-way valve, any gap of the valve core allows any two adjacent interfaces on the valve housing to be connected. Figure 3 The state of the valve core of the six-position four-way valve shown in A after rotating 60° counterclockwise is as follows Figure 3 As shown in C.

[0046] Figure 1In the system shown, the r interface of the eight-position eight-way valve 9 and the q interface of the eight-position eight-way valve 10 are connected to the d interface and the a interface of the six-position four-way valve 16 respectively, the r interface of the eight-position eight-way valve 10 and the q interface of the eight-position eight-way valve 11 are connected to the d interface and the a interface of the six-position four-way valve 17 respectively, the r interface of the eight-position eight-way valve 11 and the q interface of the eight-position eight-way valve 12 are connected to the d interface and the a interface of the six-position four-way valve 18 respectively, the r interface of the eight-position eight-way valve 12 and the q interface of the eight-position eight-way valve 13 are connected to the d interface and the a interface of the six-position four-way valve 19 respectively, the r interface of the eight-position eight-way valve 13 and the q interface of the eight-position eight-way valve 14 are connected to the d interface and the a interface of the six-position four-way valve 20 respectively, the r interface of the eight-position eight-way valve 14 and the q interface of the eight-position eight-way valve 9 are connected to the six-position four The d interface of the four-way valve 15 is connected to the a interface; the b interface of the six-position four-way valve 15 and the c interface of the six-position four-way valve 16 are respectively connected to the inlet and outlet of the adsorption column 21, the b interface of the six-position four-way valve 16 and the c interface of the six-position four-way valve 17 are respectively connected to the inlet and outlet of the adsorption column 22, the b interface of the six-position four-way valve 17 and the c interface of the six-position four-way valve 18 are respectively connected to the inlet and outlet of the adsorption column 23, the b interface of the six-position four-way valve 18 and the c interface of the six-position four-way valve 19 are respectively connected to the inlet and outlet of the adsorption column 24, the b interface of the six-position four-way valve 19 and the c interface of the six-position four-way valve 20 are respectively connected to the inlet and outlet of the adsorption column 25, and the b interface of the six-position four-way valve 20 and the c interface of the six-position four-way valve 15 are respectively connected to the inlet and outlet of the adsorption column 26.

[0047] Operation method of the system with simultaneous adsorption, water washing and elution: When the system is running, the eight first interfaces i to p of the eight-position eight-way valve housing are connected to the material pipelines respectively. Among them, interface j is the eluent inlet, interface k is the clean water outlet for washing raw material liquid, interface i is the clean water inlet for washing raw material liquid, interface l is the raw material liquid outlet, interface n is the raw material liquid inlet, interface o is the clean water outlet for washing eluent, interface m is the clean water inlet for washing eluent, and interface p is the eluent outlet. When the system is in Figure 1 In the state shown, adsorption columns 21 and 22 are in a series adsorption state, adsorption column 23 is in a water-washing eluent state, adsorption columns 24 and 25 are in a series elution state, and adsorption column 26 is in a water-washing raw material liquid state. When adsorption column 21 reaches adsorption saturation, the valve cores of the eight-position eight-way valves 9, 11, 12, and 14 are simultaneously rotated 90° clockwise, and the valve cores of the six-position four-way valves 16, 17, 19, and 20 are rotated 60° counterclockwise. At this time, adsorption columns 22 and 23 are in a series adsorption state, adsorption column 24 is in a water-washing eluent state, adsorption columns 25 and 26 are in a series elution state, and adsorption column 21 is in a water-washing raw material liquid state. When adsorption column 22 reaches adsorption saturation, the valve cores of the eight-position eight-way valves 9, 10, 12, and 13 are again rotated 90° clockwise, and the valve cores of the six-position four-way valves 15, 17, 18, and 20 are rotated 60° counterclockwise, and the system switches to the next state.

[0048] System operation method for water washing and elution interval operation: When the system is running, the eight first interfaces i~p of the eight-position eight-way valve housing are connected to the material pipeline respectively. The connection method is exactly the same as that of the system with adsorption, water washing and elution running simultaneously. Figure 4 In the state shown, adsorption columns 21, 22, and 23 are in a series adsorption state, and adsorption columns 24, 25, and 26 are in a series elution state. When the elution of adsorption column 24 is completed, the valve core of the eight-position eight-way valve 12 is rotated 90° clockwise and the valve core of the six-position four-way valve 19 is rotated 60° counterclockwise, and the adsorption column 24 is switched to the water washing eluent state. When the water washing of adsorption column 24 is completed, the valve cores of the eight-position eight-way valves 9 and 12 are rotated 90° clockwise and the valve cores of the six-position four-way valves 16 and 18 are rotated 60° counterclockwise, and the adsorption columns 22, 23, and 24 are in a series adsorption state, the adsorption columns 25 and 26 continue to be in a series elution state, and the adsorption column 21 is in a water washing raw liquid state. After the adsorption column 21 is washed with water, the valve core of the eight-position eight-way valve 9 is rotated 90° clockwise and the valve core of the six-position four-way valve 15 is rotated 60° counterclockwise. At this time, the adsorption columns 22, 23, and 24 continue to be in the series adsorption state, and the adsorption columns 25, 26, and 21 are in the series elution state.

[0049] System operation method of parallel operation of each adsorption column: When each adsorption column is operated in parallel, all six-position four-way valves are in Figure 3 The state of C in the middle, and the state of all six-position four-way valves remains unchanged during the operation of the system. The connection method of the eight first interfaces i~p of the eight-position eight-way valve housing and the material pipelines is exactly the same as the connection method of the system with simultaneous operation of adsorption, water washing and elution. When the system is in Figure 5 In the state shown, the adsorption columns operate in parallel, with adsorption columns 21 and 22 in parallel adsorption mode, adsorption columns 23 and 24 in parallel elution mode, and adsorption columns 25 and 26 in parallel raw material liquid washing mode. By rotating the valve core of the corresponding eight-position, eight-way valve 90° clockwise, each adsorption column can alternate between adsorption, raw material liquid washing, elution, and water-washing eluent.

[0050] Example 2

[0051] A series-parallel multi-mode adsorption system based on an eight-position eight-way valve and a six-position four-way valve, an adsorption system consisting of four adsorption columns, four eight-position eight-way valves and four six-position four-way valves, the system structure is as follows Figure 6 As shown in the figure, the structure of the eight-position eight-way valve and the six-position four-way valve, as well as the connection mode of each pipeline are exactly the same as those in Example 1. When the system is in the process of adsorption, water washing and elution synchronous operation, the adsorption columns of the system are actually operated in parallel. At this time, all the six-position four-way valves are in Figure 3 The system is in the state of C, and the state of all six-position four-way valves remains unchanged during the operation of the system. Figure 6 In the states shown, adsorption columns 35-38 are in the adsorption state, the water-washing eluent state, the elution state, and the water-washing raw material liquid state, respectively. By rotating the valve cores of all eight-position, eight-way valves 90° clockwise, adsorption columns 35-38 are switched to the water-washing raw material liquid state, the adsorption state, the water-washing eluent state, and the elution state, respectively. When the system is in the water-washing and elution intermittent operation mode, its operation method is the same as the system operation method for the water-washing and elution intermittent operation in Example 1.

[0052] Example 3

[0053] An adsorption system based on an eight-position eight-way valve and a six-position four-way valve in series and parallel connection with multiple modes, which is composed of three adsorption columns, three eight-position eight-way valves and three six-position four-way valves. The system structure is as follows: Figure 7 As shown. In the figure, the structure of the eight-position eight-way valve and the six-position four-way valve, as well as the connection method of each pipeline are exactly the same as those in Example 1. Since the system contains only three adsorption columns, it is possible to realize the parallel operation mode of each adsorption column and the water washing and elution interval operation mode. When the system is in the parallel operation mode of each adsorption column, its operation method is exactly the same as the operation method of the parallel operation mode of each adsorption column in Example 1. When the system is in the water washing and elution interval operation mode, that is, Figure 7 In the state shown, the adsorption columns 45 and 46 are in the series adsorption state, and the adsorption column 47 is in the elution state. When the elution of the adsorption column 47 is completed, the valve core of the eight-position eight-way valve 41 is rotated 90° clockwise, and the adsorption column 47 is switched to the water-washing eluent state. When the water washing of the adsorption column 47 is completed, the valve cores of the eight-position eight-way valves 39 and 41 are rotated 90° clockwise, and the valve cores of the six-position four-way valves 43 and 44 are rotated 60° counterclockwise. At this time, the adsorption column 45 is in the water-washing raw liquid state, and the adsorption columns 46 and 47 are in the series adsorption state. When the water washing of the adsorption column 45 is completed, the valve core of the eight-position eight-way valve 39 is rotated 90° clockwise again. At this time, the adsorption columns 46 and 47 continue to be in the series adsorption state, and the adsorption column 45 is in the elution state.

[0054] Example 4

[0055] A parallel adsorption system based on an eight-position eight-way valve, an adsorption system consisting of three adsorption columns and three eight-position eight-way valves, the system structure is as follows Figure 8 As shown in the figure, one adsorption column and one eight-position, eight-way valve constitute one adsorption unit, for a total of three adsorption units. The structure of the eight-position, eight-way valve in the system and the connection method of the eight first interfaces i to p at the top and bottom of the eight-position, eight-way valve to the various material pipelines are exactly the same as in Example 1.

[0056] In each adsorption unit, the q and r ports of the eight-position, eight-way valve connect to the inlet and outlet of the adsorption column, respectively. Because the system lacks a six-position, four-way valve, only parallel adsorption is possible for each column. By rotating the valve core of the eight-position, eight-way valve in any adsorption unit 90° clockwise or counterclockwise, the adsorption column in that unit can be cycled between adsorption, washing the feed solution, elution, and washing the eluent.

[0057] Example 5

[0058] A parallel adsorption system based on an eight-position eight-way valve is an adsorption system consisting of two adsorption columns and two eight-position eight-way valves. The system structure is as follows: Figure 9 As shown in the figure, one adsorption column and one eight-position, eight-way valve constitute one adsorption unit, for a total of two adsorption units. The structure of the eight-position, eight-way valve in the system and the connection method of the eight first interfaces i to p at the top and bottom of the eight-position, eight-way valve to the various material pipelines are exactly the same as in Example 1. The function and operation of this system are exactly the same as those of the system in Example 4.

[0059] Example 6

[0060] A parallel adsorption system based on a four-position four-way valve, consisting of three adsorption columns and six four-position four-way valves, the system structure is as follows Figure 10 As shown in the figure, one adsorption column and two four-position four-way valves constitute one adsorption unit, with a total of three adsorption units.

[0061] The top and front perspective views of the four-position four-way valve are shown in Figure 11 In Figures A and B, the bottom of the valve housing has four first ports (ports e through h) and one second port (port i). These four first ports are connected to the valve core's a through d channel inlets via four circular liquid distribution rings. Port f is connected to the a channel inlet, port g is connected to the b channel inlet, port e is connected to the c channel inlet, and port h is connected to the d channel inlet. The valve core has four channels (channels a through d), and their outlets are evenly arranged radially. By rotating the valve core of the four-position, four-way valve 90 degrees, the outlets of the four channels can be connected to the second port (port i) in sequence. Figure 11 The top perspective view of the four-position four-way valve shown in A is shown after the valve core is rotated 90° clockwise. Figure 11 As shown in C.

[0062] System Operation and Operation: During system operation, the four first ports (e through h) of the four-position, four-way valve housing connected to the adsorption column inlet are connected to the material inlet pipelines. Port f is the raw liquid inlet, port g is the clean water inlet for washing the eluent, port e is the eluent inlet, and port h is the clean water inlet for washing the raw liquid. Ports e through h of the four-position, four-way valve housing connected to the adsorption column outlet are connected to the material outlet pipelines. Port f is the raw liquid outlet, port g is the clean water outlet for washing the eluent, port e is the eluent outlet, and port h is the clean water outlet for washing the raw liquid. This system only supports the parallel operation of individual adsorption columns. During system operation, the adsorption columns in each adsorption unit can be cycled between adsorption, raw liquid washing, elution, and water washing by simultaneously rotating the valve cores of the two four-position, four-way valves in the corresponding adsorption unit 90 degrees clockwise or counterclockwise.

[0063] Example 7

[0064] A parallel adsorption system based on three-position three-way valves includes three adsorption columns and six three-position three-way valves. The system structure is as follows: Figure 12 As shown in the figure, one adsorption column and two three-position three-way valves constitute one adsorption unit, for a total of three adsorption units.

[0065] The top and front perspective views of the three-position three-way valve are shown in Figure 13 A and B. Figure 13 The three-position three-way valve shown in Figure A includes a valve housing and a valve core. The valve core can rotate in the valve housing. The valve housing has three first interfaces (d to f interfaces) and one second interface (g interface). The valve core has three channels (a to c channels). The outlets of the three channels are evenly arranged radially. The three first interfaces are connected to the inlets of the three channels respectively through three circular liquid distribution rings on the top. By rotating the valve core of the three-position three-way valve 120° in sequence, the outlets of the three channels can be connected to the second interface (g interface) in sequence.

[0066] In each adsorption unit, the inlet and outlet of the adsorption column are respectively connected to the second interfaces (g interfaces) of two three-position three-way valves. In the same adsorption unit, the three first interfaces of the three-position three-way valve connected to the inlet of the adsorption column are respectively connected to the material interfaces. When only the raw liquid is washed with water, the e interface is connected to the raw liquid input pipe, the d interface is connected to the clean water input pipe for washing the raw liquid, and the f interface is connected to the eluent input pipe. The e interface of the three-position three-way valve connected to the outlet of the adsorption column is connected to the raw liquid output pipe, the d interface is connected to the clean water output pipe for washing the raw liquid, and the f interface is connected to the eluent output pipe. During the operation of the system, the valve core of the two three-position three-way valves in the corresponding adsorption unit is rotated 120° clockwise or counterclockwise at the same time to realize the switching of the adsorption column in the adsorption unit between adsorption, water washing and elution. Figure 13 The top perspective view of the three-position three-way valve shown in A is shown after the valve core is rotated 120° clockwise. Figure 13 Middle C.

[0067] Example 8

[0068] A parallel adsorption system based on a six-position six-way valve includes three adsorption columns and three six-position six-way valves. The system structure is as follows: Figure 14 As shown in the figure, one adsorption column and one six-position six-way valve constitute one adsorption unit, and there are three adsorption units in total.

[0069] The top and front perspective views of the six-position six-way valve are shown in Figure 15 A and B. Figure 15 The six-position six-way valve shown in A includes a valve housing and a valve core. The valve core can rotate in the valve housing. The valve housing has six first interfaces (g~l interfaces) and two second interfaces (m interface, n interface). The valve core has six channels (a~f channels). The six first interfaces are connected to the six channel inlets respectively through six circular liquid distribution rings at the top and bottom. The outlets of the six channels are evenly arranged radially. By rotating the valve core, the outlets of any two adjacent channels of the valve core can be connected to the two second interfaces (m interface, n interface).

[0070] In each adsorption unit, the two second interfaces (m interface and n interface) of the same six-position six-way valve are respectively connected to the inlet and outlet of the same adsorption column. When only the raw liquid is washed with water, the h interface of the six-position six-way valve housing is connected to the raw liquid input pipe, the i interface is connected to the eluent output pipe, the g interface is connected to the eluent input pipe, the k interface is connected to the clean water output pipe for washing the raw liquid, the l interface is connected to the clean water input pipe for washing the raw liquid, and the j interface is connected to the raw liquid output pipe. During the operation of the system, the adsorption column connected to the six-position six-way valve is switched between adsorption, water washing and elution by rotating the valve core of the corresponding six-position six-way valve 120° clockwise or counterclockwise. Figure 15 The top perspective view of the six-position six-way valve shown in A is shown after the valve core is rotated 120 degrees clockwise. Figure 15 As shown in C.

[0071] It should be understood that the above detailed description of the technical solution of the present invention with the help of the preferred embodiment is illustrative and not restrictive. Based on reading the specification of the present invention, those skilled in the art can modify the technical solutions described in each embodiment, or make equivalent replacements for some of the technical features therein. For example, by changing the number of valve core channels and the number of valve housing interfaces of the corresponding multi-way valve, the adsorption system contains only one water wash, realizing only water washing of raw liquid or only water washing of eluent; the water washing raw liquid interface and the water washing eluent interface of the multi-way valve housing are combined into one interface, thereby simplifying the valve body structure and reducing the number of material pumps. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, which fall within the scope of the invention to be protected, and the scope of the invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A modular parallel operation adsorption system, characterized in that: The system includes n (n≥1) adsorption columns and n (n≥1) multi-way valves, wherein the multi-way valve is an eight-position eight-way valve, and one adsorption column and one eight-position eight-way valve constitute an adsorption unit. The eight-position eight-way valve includes a valve housing and a valve core, and the valve housing has eight first interfaces and two second interfaces. The valve core has eight channels, and the angle between the two second interfaces is 45°. Each channel has an inlet and an outlet, and the outlets of the eight channels are evenly arranged radially. The valve core can rotate in the valve housing. When the valve core is rotated, the inlet of the channel is always connected to the first interface, and any one of the channels can be controlled by rotating the valve core. The outlet of the channel is connected to the second interface, and the two second interfaces of the eight-position eight-way valve are respectively connected to the inlet and outlet of the same adsorption column, and the eight first interfaces of the valve housing of the eight-position eight-way valve are respectively connected to the raw liquid input pipe, the raw liquid output pipe, the eluent input pipe, the eluent output pipe, the clean water input pipe for washing the raw liquid, the clean water output pipe for washing the raw liquid, the clean water input pipe for washing the eluent, and the clean water output pipe for washing the eluent. During the operation of the system, the adsorption column connected to the eight-position eight-way valve is switched between adsorption, water washing and elution by rotating the valve core of the corresponding eight-position eight-way valve 90° clockwise or counterclockwise.

2. A modular parallel operation adsorption system, characterized in that: The system includes n (n≥1) adsorption columns and n (n≥1) multi-way valves, wherein the multi-way valve is a six-position six-way valve, and one adsorption column and one six-position six-way valve constitute an adsorption unit. The six-position six-way valve includes a valve housing and a valve core, and the valve housing has six first interfaces and two second interfaces. The valve core has six channels, each channel has an inlet and an outlet, and the outlets of the six channels are evenly arranged radially. The inlet of the channel is always connected to the first interface, and the angle between the two second interfaces is 60°. The valve core can rotate in the valve housing, and by rotating the valve core, the outlets of any two adjacent channels of the valve core are connected. It can be docked and connected with two second interfaces. The two second interfaces of the six-position six-way valve are respectively connected to the inlet and outlet of the same adsorption column. The six first interfaces of the six-position six-way valve housing are respectively connected to the raw liquid input pipe, the raw liquid output pipe, the eluent input pipe, the eluent output pipe, the clean water input pipe for washing the raw liquid / the clean water input pipe for washing the eluent, and the clean water output pipe for washing the raw liquid / the clean water output pipe for washing the eluent. During the operation of the system, the adsorption column connected to the six-position six-way valve can be switched between adsorption, water washing and elution by rotating the valve core of the corresponding six-position six-way valve 120° clockwise or counterclockwise.

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