A pressure swing adsorption device for methanol and a control system thereof

Abstract

The application discloses a pressure swing adsorption device for methanol and a control system thereof, and is applied to the field of environmental protection, and comprises a base body, wherein the execution module comprises a plurality of groups of program-controlled valves, the adsorption module comprises A tower, B tower, C tower and D tower, the program-controlled valves are fixedly installed outside the base body, the adsorption module is arranged outside the base body, an integrated flow channel module is arranged in the inside of the base body, the integrated flow channel module comprises a raw material gas flow channel, a product hydrogen flow channel, a pressure equalizing two-flow channel, a desorption gas flow channel and a pressure equalizing one-flow channel, and a plurality of groups of the program-controlled valves are respectively denoted as program-controlled valves A1-A5, program-controlled valves B1-B5, program-controlled valves C1-C5, program-controlled valves D1-D5 and program-controlled valves E, and the application has the characteristics of improving the pressure swing adsorption efficiency of methanol.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, specifically to a pressure swing adsorption device for methanol and its control system. Background Technology

[0002] Methanol is a highly toxic compound. Industrially, pressure swing adsorption (PSA) technology is often used to purify methanol and render it harmless.

[0003] Under current technology, methanol pressure swing adsorption purification technology requires the alternating opening and closing of multiple programmable valves to complete process steps such as adsorption, pressure equalization, forward release, reverse release, and flushing. Traditional solutions use a single programmable valve and a distributed pipeline splicing layout, which has drawbacks such as long pipelines, many leakage points at joints, and large footprint. In addition, methanol reformed gas contains trace amounts of methanol, water vapor, and carbon dioxide, and conventional sealing structures are prone to aging and flow channels are prone to scale accumulation, making it difficult to guarantee long-term sealing performance and response speed.

[0004] Therefore, this application aims to provide a pressure swing adsorption device for methanol and its control system to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure swing adsorption device and its control system for methanol, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pressure swing adsorption device and its control system for methanol, comprising a substrate module, an execution module and an adsorption module, wherein the substrate module comprises a substrate, the execution module comprises several sets of programmable valves, and the adsorption module comprises tower A, tower B, tower C and tower D, wherein the programmable valves are all fixedly installed outside the substrate, and the adsorption module is disposed outside the substrate; The matrix has an integrated flow channel module inside, which includes a raw material flow channel, a product hydrogen flow channel, a pressure equalization secondary flow channel, a desorption flow channel, and a pressure equalization primary flow channel. The raw material gas flow channel includes a gas flow channel one. The gas flow channel one has a raw material gas inlet that penetrates the bottom of the substrate. The gas flow channel one is connected to gas flow channels two, three, four and five on its periphery. Gas flow channel two is connected to gas flow channel six. Gas flow channel three is connected to gas flow channel seven. Gas flow channel four is connected to gas flow channel eight. Gas flow channel five is connected to gas flow channel nine. All gas flow channels except gas flow channel one penetrate the substrate. Gas flow channels six, seven, eight and nine are connected to tower D, tower A, tower B and tower C respectively, and each has an analytical gas inlet inside.

[0007] According to the above technical solution, the product hydrogen flow channel includes hydrogen flow channel one, and a product hydrogen outlet is opened inside hydrogen flow channel one. The product hydrogen outlet penetrates the upper end of the substrate. Hydrogen flow channel one is connected to hydrogen flow channel two, hydrogen flow channel three, hydrogen flow channel four and hydrogen flow channel five on its periphery. Hydrogen flow channel two is connected to hydrogen flow channel six, hydrogen flow channel three is connected to hydrogen flow channel seven, hydrogen flow channel four is connected to hydrogen flow channel eight, and hydrogen flow channel five is connected to hydrogen flow channel nine. All hydrogen flow channels except hydrogen flow channel one penetrate the substrate. Hydrogen flow channels six, seven, eight and nine are connected to tower D, tower A, tower B and tower C respectively, and each has a pressure equalization port one and a pressure equalization port two opened inside. Pressure equalization port one is closer to hydrogen flow channel one than pressure equalization port two.

[0008] According to the above technical solution, the equalizing flow channel includes equalizing flow channel one, and equalizing flow channel two, equalizing flow channel three, equalizing flow channel four and equalizing flow channel five are respectively connected to the periphery of equalizing flow channel one. Except for equalizing flow channel one, each group of equalizing flow channels penetrates the substrate and has a through hole one inside, which is connected to equalizing port two.

[0009] According to the above technical solution, the analytical gas flow channel includes analytical gas outlet one and analytical gas outlet two penetrating the bottom of the substrate. Analytical gas outlet one is connected to analytical flow channel one and analytical flow channel four. Analytical gas outlet two is connected to analytical flow channel two and analytical flow channel three. Each set of analytical gas outlets penetrates the substrate and is connected to the analytical gas flow channel.

[0010] According to the above technical solution, the equalizing flow channel includes equalizing flow channel one and through hole two. The equalizing flow channel one is connected to equalizing flow channel two, equalizing flow channel three, equalizing flow channel four, equalizing flow channel five and equalizing flow channel six. The through hole two is connected to the product hydrogen outlet. The equalizing flow channel is connected to equalizing port one. Except for equalizing flow channel one, each group of equalizing flow channels penetrates the substrate. The valve stems of each group of programmable valves are inserted into each group of flow channels. The substrate module is externally equipped with raw material supply equipment, recovery equipment and product collection equipment.

[0011] According to the above technical solution, the several groups of programmable valves are respectively denoted as programmable valves A1-A5, B1-B5, C1-C5, D1-D5, and E. Airflow channels two, three, four, and five are respectively connected to programmable valves D1, A1, B1, and C5. Hydrogen flow channels two, three, four, and five are respectively connected to programmable valves D2, A2, B2, and C2. Pressure equalization channels two and two... Flow channels three, four, and five are connected to programmable valves A4, D4, C4, and B4, respectively. Analytical flow channels one, two, three, and four all penetrate the matrix and are connected to programmable valves D5, A5, B5, and C5, respectively. Flow channels two, three, four, five, and six are connected to programmable valves A3, D3, C3, B3, and E, respectively.

[0012] A control system for a pressure swing adsorption (PSA) device for methanol includes the following steps: Step 1: The operator connects the raw material gas inlet, the first and second desorption gas outlets, and the product hydrogen outlet to the raw material supply equipment, the recovery equipment, and the product collection equipment, respectively. Step 2: Start the A tower. The programmable valve A1 connects the gas flow channel 7 and the gas flow channel 3. The raw material gas enters the gas flow channel 1 through the raw material gas inlet and flows into the A tower along the gas flow channel 3 and the gas flow channel 7. Step 3: The raw gas is purified inside tower A to generate product hydrogen. The programmable valve A2 connects hydrogen flow channel 3 and hydrogen flow channel 7. Product hydrogen enters hydrogen flow channel 7 from tower A, flows into hydrogen flow channel 1 along hydrogen flow channel 3, and finally outputs high-purity hydrogen from the product hydrogen outlet to the product collection device. Step 4: Pressure equalization and sequential placement of tower A; Step 5: Backflushing and pressure equalization of column A; Step Six: Final Lifting Operation of Tower A.

[0013] According to the above technical solution, step four includes: Open the programmable valves A4 and B4, clear the through hole one on the equalization channel two and the equalization channel five, and the gas inside the A tower enters the equalization channel two through the equalization port two of the hydrogen channel seven; The gas inside tower A flows through equalization channel one, equalization channel five, and hydrogen channel eight into tower B, thereby achieving pressure equalization between tower A and tower B.

[0014] According to the above technical solution, step five includes: Close the programmable valve A4 and open the programmable valve A5. The second analytical flow channel is cleared, and the gas in the A tower flows into the seventh gas flow channel in the opposite direction. It enters the analytical gas flow channel along the analytical gas port and is discharged from the matrix through the second analytical gas discharge port.

[0015] According to the above technical solution, step six includes: When the programmable valve A4 is closed, programmable valve A3, programmable valve C2, and programmable valve E are opened, and programmable valve C3 is opened, the purified product hydrogen from tower C flows into hydrogen channel nine. Part of it is output through the product hydrogen outlet, and the other part enters the equalization channel four through the equalization port one, and is then fed into tower A along equalization channel one, equalization channel two, equalization port one, and hydrogen channel seven to perform final lifting of tower A.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting an integrated flow channel module, realizes the adsorption, pressure equalization, forward release, reverse release and rinsing of each group of adsorption towers. Through the integrated structure of the integrated flow channel module, the production efficiency and sealing performance are effectively improved. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the substrate of the present invention; Figure 2 This is a process flow diagram of the present invention; Figure 3 This is a front view schematic diagram of the substrate of the present invention; Figure 4 This is a basic schematic diagram of the three sides of the substrate of the present invention; Figure 5 This is a rear view schematic diagram of the substrate of the present invention; Figure 6 This is a schematic diagram of the raw material airflow channel structure of the present invention; Figure 7 This is a schematic diagram of the hydrogen flow channel structure of the product of the present invention; Figure 8 This is a schematic diagram of the equalizing two-channel structure of the present invention; Figure 9 This is a schematic diagram of the analytical airflow channel structure of the present invention; Figure 10 This is a schematic diagram of the pressure equalization flow channel structure of the present invention; Figure 11 This is a schematic diagram of the installation of the programmable valve of the present invention; In the diagram: 1. Matrix; 2. Controlled valve; 3. Tower A; 4. Tower B; 5. Tower C; 6. Tower D; 7. Feed gas flow channel; 71. Flow channel one; 72. Feed gas inlet; 73. Flow channel two; 74. Flow channel three; 75. Flow channel four; 76. Flow channel five; 77. Flow channel six; 78. Flow channel seven; 79. Flow channel eight; 710. Flow channel nine; 711. Desorption gas inlet; 8. Product hydrogen flow channel; 81. Hydrogen flow channel one; 82. Product hydrogen outlet; 83. Hydrogen flow channel two; 84. Hydrogen flow channel three; 85. Hydrogen flow channel four; 86. Hydrogen flow channel five; 87. Hydrogen flow channel six; 88. Hydrogen flow channel seven; 89. Hydrogen flow channel eight; 810. Hydrogen flow channel nine; 811. Equalizing port one ; 812, Equalizing Port II; 9, Equalizing Channel II; 91, Equalizing Channel II I; 92, Equalizing Channel II II; 93, Equalizing Channel II III; 94, Equalizing Channel II IV; 95, Equalizing Channel II V; 96, Through Hole I; 10, Desorption Gas Channel; 101, Desorption Gas Discharge Port I; 102, Desorption Gas Discharge Port II; 103, Desorption Channel I; 104, Desorption Channel II; 105, Desorption Channel III; 106, Desorption Channel IV; 11, Equalizing Channel I; 111, Equalizing Channel I I; 112, Through Hole II; 113, Equalizing Channel I II; 114, Equalizing Channel I III; 115, Equalizing Channel I IV; 116, Equalizing Channel I V; 117, Equalizing Channel I VI. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-5 The present invention provides a technical solution: a pressure swing adsorption device for methanol and its control system, comprising a matrix module, an execution module and an adsorption module.

[0020] The matrix module includes a matrix 1, the execution module includes several sets of programmable valves 2, and the adsorption module includes tower A 3, tower B 4, tower C 5, and tower D 6. Tower A 3, tower B 4, tower C 5, and tower D 6 are all adsorption towers, which are existing technologies. The several sets of programmable valves 2 are respectively denoted as programmable valves A1-A5, programmable valves B1-B5, programmable valves C1-C5, programmable valves D1-D5, and programmable valve E. All programmable valves 2 are existing technologies.

[0021] The base module is externally equipped with raw material supply equipment, recycling equipment, and product collection equipment, all of which are existing technologies and are not shown.

[0022] Please see Figure 1 The programmable valves 2 are all fixedly installed on the outside of the substrate 1, and the adsorption module is set on the outside of the substrate 1. The substrate 1 is made of 316L stainless steel or hydrogen embrittlement resistant alloy steel, which can withstand the 0.1-3.0MPa pressure swing conditions of the pressure swing adsorption process and effectively resist the corrosion and hydrogen embrittlement damage of methanol and water vapor.

[0023] The interior of the substrate 1 is equipped with an integrated flow channel module, which includes a raw material flow channel 7, a product hydrogen flow channel 8, a pressure equalization secondary flow channel 9, a desorption flow channel 10, and a pressure equalization primary flow channel 11. This achieves integrated multi-pathway integration, reducing the footprint of pipelines in conventional solutions. The inner wall of the integrated flow channel module is polished to a roughness of no more than 0.8μm, reducing gas eddies and impurity adhesion, and preventing trace impurities in the methanol reforming gas from accumulating and clogging the flow channels.

[0024] Please see Figures 3-6 The raw material gas flow channel 7 includes a first gas flow channel 71. The interior of the first gas flow channel 71 has a raw material gas inlet 72 that penetrates the bottom of the substrate 1. The periphery of the first gas flow channel 71 is connected to the second gas flow channel 73, the third gas flow channel 74, the fourth gas flow channel 75, and the fifth gas flow channel 76. The second gas flow channel 73 is connected to the sixth gas flow channel 77. The third gas flow channel 74 is connected to the seventh gas flow channel 78. The fourth gas flow channel 75 is connected to the eighth gas flow channel 79. The fifth gas flow channel 76 is connected to the ninth gas flow channel 710. Except for the first gas flow channel 71, all the gas flow channels penetrate the substrate 1. The sixth gas flow channel 77, the seventh gas flow channel 78, the eighth gas flow channel 79, and the ninth gas flow channel 710 are connected to the D tower 6, the A tower 3, the B tower 4, and the C tower 5, respectively, and each of them has an analytical gas inlet 711 inside.

[0025] Airflow passage 2 73, airflow passage 3 74, airflow passage 4 75 and airflow passage 5 76 are respectively connected to programmable valve D1, programmable valve A1, programmable valve B1 and programmable valve C1.

[0026] Please see Figures 3-5 , Figure 7 The product hydrogen flow channel 8 includes a hydrogen flow channel one 81, with a product hydrogen outlet 82 inside the hydrogen flow channel one 81. The product hydrogen outlet 82 penetrates the upper end of the substrate 1. Hydrogen flow channels two 83, three 84, four 85, and five 86 are connected to the periphery of hydrogen flow channel one 81. Hydrogen flow channel two 83 is connected to hydrogen flow channel six 87, hydrogen flow channel three 84 is connected to hydrogen flow channel seven 88, and hydrogen flow channel four 85 is connected to hydrogen flow channel eight 88. 9. Hydrogen channel 5 86 is connected to hydrogen channel 9 810. Except for hydrogen channel 1 81, all hydrogen channels penetrate the substrate 1. Hydrogen channels 6 87, 7 88, 89 and 9 810 are connected to tower D 6, tower A 3, tower B 4 and tower C 5 respectively. Each of them has a pressure equalization port 1 811 and a pressure equalization port 2 812. Pressure equalization port 1 811 is closer to hydrogen channel 1 81 than pressure equalization port 2 812.

[0027] Hydrogen flow channel 2 83, hydrogen flow channel 3 84, hydrogen flow channel 4 85 and hydrogen flow channel 5 86 are respectively connected to programmable valve D2, programmable valve A2, programmable valve B2 and programmable valve C2.

[0028] Please see Figures 3-5 , Figure 8 , Figure 8 In the bottom view, the equalizing flow channel 9 includes equalizing flow channel one 91. The periphery of equalizing flow channel one 91 is connected to equalizing flow channel two 92, equalizing flow channel three 93, equalizing flow channel four 94 and equalizing flow channel five 95 respectively. Except for equalizing flow channel one 91, each group of equalizing flow channels 9 penetrates the base 1 and has a through hole one 96 inside, which is connected to equalizing port two 812.

[0029] Equalizing flow channel 2 92, equalizing flow channel 3 93, equalizing flow channel 4 94 and equalizing flow channel 5 95 are respectively connected to programmable valve A4, programmable valve D4, programmable valve C4 and programmable valve B4.

[0030] Please see Figures 3-5 , Figure 9 The desorption gas flow channel 10 includes a desorption gas discharge port 101 and a desorption gas discharge port 2 102 that penetrate the bottom of the substrate 1. The desorption gas discharge port 101 is connected to the desorption flow channel 103 and the desorption flow channel 4 106, and the desorption gas discharge port 2 102 is connected to the desorption flow channel 2 104 and the desorption flow channel 3 105.

[0031] Analysis channels 103, 104, 105, and 106 all penetrate the substrate 1 and are connected to programmable valves D5, A5, B5, and C5, respectively.

[0032] Each set of analytical gas inlets 711 penetrates the substrate 1 and is connected to the analytical gas flow channel 10.

[0033] Please see Figures 3-5 , Figure 10 , Figure 10 In a bottom view, the equalization flow channel 11 includes equalization flow channel one 111 and through hole two 112. The equalization flow channel one 111 is connected to equalization flow channel two 113, equalization flow channel three 114, equalization flow channel four 115, equalization flow channel five 116 and equalization flow channel six 117. The through hole two 112 is connected to the product hydrogen outlet 82. The equalization flow channel one 11 is connected to equalization port one 811.

[0034] Except for equalizing flow channel 111, all equalizing flow channels 11 penetrate the substrate 1. Equalizing flow channels 113, 114, 115, 116, and 117 are respectively connected to programmable valves A3, D3, C3, B3, and E.

[0035] Please refer to Figure 11 The valve stems of each group of programmable valves 2 are inserted into the flow channels of each group, so as to achieve compact installation of programmable valves 2, rapid response, and further improve production efficiency.

[0036] The integrated structure of the integrated flow channel module allows raw material gas to be input through the raw material gas inlet 72 and product hydrogen to be output through the product hydrogen outlet 82, effectively reducing the number of pipe joints in conventional solutions and further improving sealing performance.

[0037] A control system for a pressure swing adsorption (PSA) unit for methanol, employing a 4-1-2 program, with timing control shown in Table 1, taking tower A3 as an example, includes the following steps: Step 1: The operator connects the raw material gas inlet 72, the first desorption gas outlet 101 and the second desorption gas outlet 102, and the product hydrogen outlet 82 to the raw material supply equipment, the recovery equipment, and the product collection equipment, respectively.

[0038] Step Two: Reference Figure 6 Start tower A 3, control program valve A1 to connect gas flow channel 78 and gas flow channel 3 74. Raw material gas enters gas flow channel 1 71 through raw material gas inlet 72, and further flows into tower A 3 along gas flow channel 3 74 and gas flow channel 78.

[0039] Step 3: Reference Figure 7 The raw gas is purified inside tower A3 to produce product hydrogen. The programmable valve A2 connects hydrogen flow channel 3 84 and hydrogen flow channel 7 88. Product hydrogen enters hydrogen flow channel 7 88 from tower A3, and further flows into hydrogen flow channel 1 81 along hydrogen flow channel 3 84. Finally, high-purity hydrogen is output from product hydrogen outlet 82 to the product collection equipment.

[0040] Step 4: Pressure equalization and sequential placement of tower A3.

[0041] refer to Figure 7 and Figure 8 After the adsorption process is completed in tower A3, a pressure equalization process is performed. The programmable valves A4 and B4 are controlled to open the through holes 96 on the pressure equalization channels 92 and 95. Since the through hole 96 is connected to the pressure equalization port 812, the gas inside tower A3 enters the pressure equalization channel 92 through the pressure equalization port 812 of the hydrogen channel 7 88. Since the programmable valve B4 opens the through hole 96 of the pressure equalization channel 95, the gas inside tower A3 flows through the pressure equalization channel 91 into the pressure equalization channel 95, and then flows into the hydrogen channel 8 89 through the through hole 96 of the pressure equalization channel 95, and finally enters tower B4, thus realizing the pressure equalization of tower A3 and tower B4.

[0042] After pressure equalization is completed in tower A3, control valve A4 remains open, control valve B4 is closed, and control valve C4 is opened. Tower A3 then undergoes a sequential discharge process. The gas inside tower A3 flows sequentially through hydrogen channel 7 88, pressure equalization port 2 812, pressure equalization channel 2 92, pressure equalization channel 1 91, and pressure equalization channel 4 94 into tower C5. At the same time, the high-pressure hydrogen in tower A3 is used to flush tower C5.

[0043] After the sequential placement is completed, each group of programmable valves 2 remains in working condition, and tower A 3 and tower C 5 undergo the second pressure equalization process.

[0044] Step 5: Backflow flushing and pressure equalization of Tower A3.

[0045] refer to Figure 9 The control valve A4 is closed and the control valve A5 is opened, thus clearing the second analytical flow channel 104. Since the control valve A4 is closed, the equalization flow channel 9 is closed, and the analytical gas in tower A 3 can only flow into the flow channel 78 in the reverse direction. Since each set of analytical gas ports 711 penetrates the substrate 1 and is connected to the analytical gas flow channel 10, the analytical gas discharged from tower A 3 enters the analytical gas flow channel 10 through the analytical gas port 711. The analytical gas further flows along the second analytical flow channel 104 and is discharged from the substrate 1 through the analytical gas discharge port 102, thus realizing the reverse discharge process of tower A 3.

[0046] After the reverse discharge is completed, the programmable valve A5 remains open, the programmable valve A4 is open, and the programmable valve D4 is open. The gas in tower D 6 flows through equalization channel 3 93 and equalization channel 2 92, and then flows into hydrogen channel 7 88 through equalization port 2 812, and finally flows into tower A 3 to flush tower A 3. The flushed gas flows into gas flow channel 7 78. Since the programmable valve A5 is open, the gas enters the desorption gas flow channel 10 through the desorption gas port 711, and finally is discharged through the desorption gas discharge port 2 102.

[0047] After Tower A3 completes rinsing, programmable valves A4 and D4 remain open, while programmable valve A5 is closed. Towers A3 and D6 utilize the equalization channel 9 for a second equalization process. After the second equalization process is completed, programmable valves A4 and B4 are opened, while programmable valve D4 is closed. Towers A3 and B4 then utilize the equalization channel 9 for a first equalization process. Both the first and second equalization processes are existing technologies. The first equalization process involves equalizing pressure in one operation, while the second equalization process involves equalizing pressure in two separate operations.

[0048] Step Six: Final Lifting Operation of Tower A3.

[0049] refer to Figure 10After tower A3 completes the pressure equalization process, programmable valve A4 closes and programmable valve A3 opens. Programmable valve C2 opens, and programmable valve C3 opens to clear the pressure equalization channel 115. Programmable valve E opens, and the purified product hydrogen from tower C5 flows into hydrogen channel 9 810. Part of it is output through product hydrogen outlet 82. Since pressure equalization channel 11 is connected to pressure equalization port 811, the other part enters pressure equalization channel 4 115 through pressure equalization port 811. Since programmable valve A3 is open, the hydrogen flows along pressure equalization channel 111 into pressure equalization channel 2 113, and then flows into hydrogen channel 7 88 through pressure equalization port 811 corresponding to pressure equalization channel 2 113. Finally, it is input into tower A3 to perform final lifting. Since through hole 2 112 is connected to product hydrogen outlet 82, after the final lifting is completed, the product collection device collects the residual product hydrogen through through hole 2 112.

[0050] After completing the 4-1-2PSA process through steps one through six, the next adsorption cycle can begin. The workflow of the remaining three towers is the same as that of tower A3.

[0051] Table 1: 4-1-2PSA Timing Table

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure swing adsorption (PSA) device for methanol, comprising a matrix module, an execution module, and an adsorption module, characterized in that: The substrate module includes a substrate (1), the execution module includes several sets of programmable valves (2), the adsorption module includes tower A (3), tower B (4), tower C (5) and tower D (6), the programmable valves (2) are all fixedly installed on the outside of the substrate (1), and the adsorption module is set on the outside of the substrate (1); The substrate (1) has an integrated flow channel module inside, which includes a raw material flow channel (7), a product hydrogen flow channel (8), a pressure equalization second flow channel (9), a desorption flow channel (10), and a pressure equalization first flow channel (11). The raw material gas flow channel (7) includes a first flow channel (71). The first flow channel (71) has a raw material gas inlet (72) that penetrates the bottom of the substrate (1). The periphery of the first flow channel (71) is connected to the second flow channel (73), the third flow channel (74), the fourth flow channel (75), and the fifth flow channel (76). The second flow channel (73) is connected to the sixth flow channel (77). The third flow channel (74) is connected to the seventh flow channel (78). The fourth flow channel (75) is connected to the eighth flow channel (79). The fifth flow channel (76) is connected to the ninth flow channel (710). Except for the first flow channel (71), each flow channel penetrates the substrate (1). The sixth flow channel (77), the seventh flow channel (78), the eighth flow channel (79), and the ninth flow channel (710) are connected to the D tower (6), the A tower (3), the B tower (4), and the C tower (5), respectively, and each has an analytical gas inlet (711) inside.

2. The pressure swing adsorption device for methanol according to claim 1, characterized in that: The product hydrogen channel (8) includes a hydrogen channel one (81), and a product hydrogen outlet (82) is provided inside the hydrogen channel one (81). The product hydrogen outlet (82) penetrates the upper end of the substrate (1). The hydrogen channel one (81) is connected to hydrogen channels two (83), three (84), four (85) and five (86) on its periphery. Hydrogen channel two (83) is connected to hydrogen channel six (87). Hydrogen channel three (84) is connected to hydrogen channel seven (88). Hydrogen channel four (85) is connected to hydrogen channel eight (89). The hydrogen flow channel five (86) is connected to the hydrogen flow channel nine (810). Except for the hydrogen flow channel one (81), all the hydrogen flow channels penetrate the substrate (1). The hydrogen flow channels six (87), seven (88), eight (89) and nine (810) are connected to the D tower (6), A tower (3), B tower (4) and C tower (5) respectively, and each has a pressure equalization port one (811) and a pressure equalization port two (812) inside. The pressure equalization port one (811) is closer to the hydrogen flow channel one (81) than the pressure equalization port two (812).

3. The pressure swing adsorption device for methanol according to claim 2, characterized in that: The equalizing flow channel (9) includes equalizing flow channel one (91). The periphery of equalizing flow channel one (91) is connected to equalizing flow channel two (92), equalizing flow channel three (93), equalizing flow channel four (94) and equalizing flow channel five (95). Except for equalizing flow channel one (91), each of the equalizing flow channels (9) penetrates the substrate (1) and has a through hole one (96) inside. The through hole one (96) is connected to equalizing port two (812).

4. The pressure swing adsorption device for methanol according to claim 3, characterized in that: The analytical gas flow channel (10) includes an analytical gas outlet one (101) and an analytical gas outlet two (102) penetrating the bottom of the substrate (1). The analytical gas outlet one (101) is connected to analytical flow channel one (103) and analytical flow channel four (106). The analytical gas outlet two (102) is connected to analytical flow channel two (104) and analytical flow channel three (105). Each set of analytical gas outlets (711) penetrates the substrate (1) and is connected to the analytical gas flow channel (10).

5. A pressure swing adsorption device for methanol according to claim 4, characterized in that: The equalization flow channel (11) includes equalization flow channel one (111) and through hole two (112). The equalization flow channel one (111) is connected to equalization flow channel two (113), equalization flow channel three (114), equalization flow channel four (115), equalization flow channel five (116) and equalization flow channel six (117). The through hole two (112) is connected to the product hydrogen outlet (82). The equalization flow channel (11) is connected to equalization port one (811). Except for equalization flow channel one (111), each group of equalization flow channels (11) penetrates the substrate (1). The valve stems of each group of programmable valves (2) are inserted into each group of flow channels. The substrate module is equipped with raw material supply equipment, recycling equipment and product collection equipment.

6. The pressure swing adsorption device for methanol according to claim 5, characterized in that: Several groups of programmable valves (2) are respectively labeled as programmable valves A1-A5, B1-B5, C1-C5, D1-D5, and E. Airflow channels two (73), three (74), four (75), and five (76) are respectively connected to programmable valves D1, A1, B1, and C5. Hydrogen flow channels two (83), three (84), four (85), and five (86) are respectively connected to programmable valves D2, A2, B2, and C2. Pressure equalization channels two (92), three (93), four (94), and five (95) are respectively connected to programmable valves E. 94) and equalizing flow channel five (95) are respectively connected to programmable valve A4, programmable valve D4, programmable valve C4 and programmable valve B4. The analytical flow channel one (103), analytical flow channel two (104), analytical flow channel three (105) and analytical flow channel four (106) all penetrate the substrate (1) and are respectively connected to programmable valve D5, programmable valve A5, programmable valve B5 and programmable valve C5. The equalizing flow channel one (113), equalizing flow channel one (114), equalizing flow channel one (115), equalizing flow channel one (116) and equalizing flow channel one (117) are respectively connected to programmable valve A3, programmable valve D3, programmable valve C3, programmable valve B3 and programmable valve E.

7. A control system for a pressure swing adsorption (PSA) device for methanol, using the PSA device for methanol as described in claim 6, characterized in that: Includes the following steps: Step 1: The operator connects the raw material gas inlet (72), the first desorption gas outlet (101), the second desorption gas outlet (102), and the product hydrogen outlet (82) to the raw material supply equipment, the recovery equipment, and the product collection equipment, respectively. Step 2: Start the A tower (3). The programmable valve A1 connects the gas flow channel 7 (78) and the gas flow channel 3 (74). The raw material gas enters the gas flow channel 1 (71) through the raw material gas inlet (72) and flows into the A tower (3) along the gas flow channel 3 (74) and the gas flow channel 7 (78). Step 3: The raw gas is purified inside the A tower (3) to generate product hydrogen. The programmable valve A2 connects the hydrogen flow channel three (84) and the hydrogen flow channel seven (88). The product hydrogen enters the hydrogen flow channel seven (88) from the A tower (3), flows into the hydrogen flow channel one (81) along the hydrogen flow channel three (84), and finally outputs high-purity hydrogen from the product hydrogen outlet (82) to the product collection device. Step 4: Pressure equalization and sequential placement of tower A (3); Step 5: Backwashing and pressure equalization of tower A (3); Step 6: Final lifting operation of tower A (3).

8. The control system for a pressure swing adsorption (PSA) device for methanol according to claim 7, characterized in that: Step four includes: Open the programmable valve A4 and the programmable valve B4, and clear the through hole one (96) on the equalization channel two (92) and the equalization channel five (95). The gas inside the A tower (3) enters the equalization channel two (92) through the equalization port two (812) of the hydrogen channel seven (88). The gas inside tower A (3) flows through equalization channel one (91), equalization channel five (95), and hydrogen channel eight (89) into tower B (4), thereby achieving equalization of pressure between tower A (3) and tower B (4).

9. The control system for a pressure swing adsorption (PSA) device for methanol according to claim 8, characterized in that: Step five includes: Close the programmable valve A4 and open the programmable valve A5. The second analytical flow channel (104) is cleared, and the gas in the A tower (3) flows into the seventh gas flow channel (78) in reverse, enters the analytical gas flow channel (10) along the analytical gas port (711), and is discharged from the matrix (1) through the second analytical gas discharge port (102).

10. The control system for a pressure swing adsorption (PSA) device for methanol according to claim 9, characterized in that: Step six includes: When the programmable valve A4 is closed, the programmable valve A3 is opened, the programmable valve C2 is opened, the programmable valve E is opened, and the programmable valve C3 is opened. The purified product hydrogen from the C tower (5) flows into the hydrogen channel nine (810). Part of it is output through the product hydrogen outlet (82), and the other part enters the equalization channel four (115) through the equalization port one (811). It is then fed into the A tower (3) along the equalization channel one (111), equalization channel two (113), equalization port one (811), and hydrogen channel seven (88) to perform final lifting on the A tower (3).

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