Heat exchange regeneration gas purification device

Abstract

The utility model relates to a heat exchange regeneration gas purification device which comprises a gas inlet assembly, one end of the gas inlet assembly is fixedly connected with a deoxidation heat exchanger, the gas outlet end of a heater is connected with a deoxidizer, one end of the deoxidizer is further provided with a regeneration heat exchanger, and the deoxidation heat exchanger and the regeneration heat exchanger oppositely communicate and are led into a cooling assembly. And a drying assembly is arranged on one side of the cooling assembly. By detecting the temperature of raw material hydrogen at the outlet of the deoxidation heat exchanger and the temperature of regeneration gas at the outlet of the regeneration heat exchanger, the automatic valve and the regulating valve are controlled to be opened and closed, and the raw material gas entering the deoxidizer and the regeneration gas entering the dryer in the regeneration state are heated by heat released by reaction of hydrogen and oxygen in the deoxidizer. The working time of the electric heater can be shortened, deoxidized hydrogen is cooled through heat exchange, the temperature of an inlet of the raw material normal-temperature cooler is reduced, under the condition that the temperature of an outlet is not changed, the cooling water consumption of the raw material normal-temperature cooler is reduced, the working time of the electric heater is shortened, and therefore the electric energy consumption of the device is reduced.

Description

Technical Field

[0001] The present application relates to the field of gas purification and automatic control, and in particular to a heat exchange regeneration gas purification device. Background Art

[0002] Gas purification includes two process flows, deoxygenation and drying, which can remove a small amount of oxygen and water contained in the raw gas. In particular, in order to ensure the purity of the hydrogen product produced by water electrolysis, a gas purification device is often used for subsequent deoxygenation and dehydration treatment. In the deoxygenation process, the oxygen contained in the raw gas is removed by means of the hydrogen-oxygen reaction. A heater needs to be set up to maintain the temperature of the deoxygenator to ensure that the water produced by the hydrogen-oxygen reaction can be discharged from the deoxygenator in the form of gas. In the drying process, each dryer needs to go through three states in sequence: working, adsorption, and regeneration. A heater is set in the dryer. During the regeneration process, the regenerated gas needs to be heated to remove the moisture in the dryer to achieve dryer regeneration. In order to ensure the normal operation of the deoxygenation process and the regeneration process, the process needs to be controlled to maintain temperature stability.

[0003] In traditional processes, the temperature of the process is usually adjusted by controlling the switch of the heater. The temperature transmitter of the deaerator is associated with the electric heater, and the temperature of the deaerator is maintained within the set range by controlling the switch of the heater. The switch of the heater in the dryer is controlled by the set regeneration time and the temperature in the dryer. When the regeneration time or the temperature in the dryer exceeds the set value, the heater is turned off and the heating stops.

[0004] With respect to the above-mentioned related art, the applicant believes that the electric heater has a long working time, resulting in high power consumption of the overall device. Utility Model Content

[0005] In order to maintain the temperature during the deoxidation and drying process, the working time of the electric heater is reduced, thereby greatly reducing the power consumption of the device. The present application provides a heat exchange regeneration gas purification device.

[0006] The present application provides a heat exchange regeneration gas purification device, which adopts the following technical solution:

[0007] A heat exchange regeneration gas purification device comprises an air intake component, one end of the air intake component is fixedly connected to a deoxygenation heat exchanger, the air outlet end of the deoxygenation heat exchanger is connected to the air intake end of a heater, the air outlet end of the heater is connected to a deoxidizer, one end of the deoxidizer is also provided with a regeneration heat exchanger, one end of the air outlet end of the deoxidizer is relatively connected to the regeneration heat exchanger, the other end of the air outlet end of the deoxidizer is relatively connected to the deoxygenation heat exchanger, the deoxygenation heat exchanger is relatively connected to the regeneration heat exchanger and passes into the interior of a cooling component, a drying component is provided on one side of the cooling component, and the drying component is relatively connected to the cooling component.

[0008] Optionally, the cooling component includes a raw material normal temperature cooler, the air inlet end of the raw material normal temperature cooler is fixedly connected to a heat exchange tube, one end of the heat exchange tube is relatively connected to the deoxygenation heat exchanger, the heat exchange tube is also relatively connected to the regeneration heat exchanger, and the raw material normal temperature cooler is connected to a first gas-water separator.

[0009] Optionally, the first gas-water separator is connected to a raw material low-temperature cooler, the raw material low-temperature cooler is connected to a second gas-water separator, and the second gas-water separator is relatively connected to the drying component.

[0010] Optionally, the drying component includes a first dryer, a second dryer and a third dryer, and the gas outlet ends of the first dryer, the second dryer and the third dryer are connected to filters, and the filter filters the gas flowing out of the first dryer, the second dryer and the third dryer and discharges it as product hydrogen. The outlet ends of the first dryer, the second dryer and the third dryer are also connected to a regeneration gas circuit.

[0011] Optionally, the regeneration gas circuit includes a regeneration pipeline that relatively connects the first dryer, the second dryer and the third dryer, the gas outlet ends of the first dryer, the second dryer and the third dryer are connected to a regeneration normal temperature cooler, the outlet end of the regeneration normal temperature cooler is connected to a third gas-water separator, the third gas-water separator is connected to a regeneration low-temperature cooler, the regeneration low-temperature cooler is connected to a fourth gas-water separator, the fourth gas-water separator is relatively connected to the first dryer, the second dryer and the third dryer, and the gas outlet end of the third dryer is relatively connected to the filter.

[0012] Optionally, the regeneration pipeline includes a regeneration heat exchange inlet pipe relatively connected to the air outlet ends of the first dryer, the second dryer and the third dryer, the other end of the regeneration heat exchange inlet pipe is relatively connected to the regeneration heat exchanger, the air outlet end of the regeneration heat exchanger is connected to a regeneration heat exchange outlet pipe, and the regeneration heat exchange outlet pipe is relatively connected to the first dryer, the second dryer and the third dryer.

[0013] Optionally, a connecting pipe is arranged between the regenerative heat exchange inlet pipe and the regenerative heat exchange outlet pipe, and the connecting pipe relatively connects the regenerative heat exchange inlet pipe and the regenerative heat exchange outlet pipe. A control valve is fixedly connected to the regenerative heat exchange inlet pipe, and a control valve is fixedly connected to the connecting pipe. A regulating valve is arranged on the pipe relatively connecting the regenerative heat exchanger and the cooling component.

[0014] Optionally, a first temperature sensor is fixedly connected to the connecting pipeline between the deoxygenation heat exchanger and the heater, and a second temperature sensor is fixedly connected to the regeneration heat exchange outlet pipeline.

[0015] Optionally, when the drying component is in a regenerative heating state, the control valve of the regenerative heat exchanger air intake pipe is opened, the control valve of the connecting pipe is closed, and the regulating valve adjusts the opening according to the set temperature of the second temperature sensor; when the set temperature of the drying component exceeds the set value or the regeneration time exceeds the set value and the drying component is in a non-regenerative heating state, the control valve of the regenerative heat exchanger air intake pipe is closed, and the control valve of the connecting pipe is opened.

[0016] Optionally, the air intake assembly includes a buffer tank, the air intake end of the buffer tank is connected to an air intake pipe, and the air outlet end of the buffer tank is relatively connected to the deoxygenation heat exchanger.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. Make full use of the heat released by the hydrogen-oxygen reaction to save the electric energy consumption of the electric heater. By using heat exchange, the temperature of the gas entering the cooler is lower than that of the traditional process, which can reduce the amount of cooling water.

[0019] 2. A control method for a heat exchange regeneration device is proposed. Compared with the traditional process of adjusting the temperature by controlling the switch of the heater, this application stabilizes the temperature of the raw gas entering the deoxidizer and the temperature of the regeneration gas by controlling the flow of deoxygenated hydrogen to keep the system running smoothly and orderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flow chart of the overall structure of a heat exchange regeneration gas purification device in an embodiment of the present application.

[0021] Figure 2 It is a structural flow chart of an air intake component of a heat exchange regeneration gas purification device in an embodiment of the present application.

[0022] Figure 3 It is a structural flow chart of a deoxygenation heat exchanger, a heater, a deoxygenator and a regeneration heat exchanger of a heat exchange regeneration gas purification device in an embodiment of the present application.

[0023] Figure 4 It is a structural flow chart of a cooling component of a heat exchange regeneration gas purification device in an embodiment of the present application.

[0024] Figure 5 It is a structural flow chart of a drying component of a heat exchange regeneration gas purification device in an embodiment of the present application.

[0025] Explanation of reference numerals: 1. air intake assembly; 11. buffer tank; 2. deoxygenation heat exchanger; 21. heat exchange tube; 211. first heat exchange branch pipe; 212. second heat exchange branch pipe; 213. regulating valve; 3. heater; 4. deoxygenator; 5. regeneration heat exchanger; 6. cooling assembly; 61. raw material normal temperature cooler; 611. first gas-water separator; 62. raw material low temperature cooler; 621. second gas-water separator; 63. regeneration normal temperature cooler; 631. third gas-water separator; 64. regeneration low temperature cooler ; 641, the fourth gas-water separator; 65, the heat exchange pipeline; 651, the circulating cooling water pipeline; 652, the low-temperature cooling water pipeline; 7, the drying assembly; 71, the first dryer; 72, the second dryer; 73, the third dryer; 74, the first drying pipe; 741, the first drying branch; 742, the second drying branch; 743, the third drying branch; 75, the regeneration pipeline; 751, the first regeneration branch; 752, the second regeneration branch; 753, the third regeneration branch; 76, the reflux pipe; 7 61. First reflux branch pipe; 762. Second reflux branch pipe; 763. Third reflux branch pipe; 77. Regeneration heat exchange air intake pipe; 771. First regeneration heat exchange air intake branch pipe; 772. Second regeneration heat exchange air intake branch pipe; 773. Third regeneration heat exchange air intake branch pipe; 774. Second automatic valve; 78. Regeneration heat exchange air outlet pipe; 781. First regeneration heat exchange air outlet branch pipe; 782. Second regeneration heat exchange air outlet branch pipe; 783. Third regeneration heat exchange air outlet branch pipe; 79. Connecting pipe; 791. First automatic valve Valve; 8. Liquid storage tank; 9. Filter; 91. Filter air inlet pipe; 911. First filter air inlet branch; 912. Second filter air inlet branch; 913. Third filter branch; 100. First temperature sensor; 101. Second temperature sensor; 102. Third temperature sensor; 103. Fourth temperature sensor; 104. Fifth temperature sensor; 105. Sixth temperature sensor; 106. Seventh temperature sensor; 107. Eighth temperature sensor; 108. Ninth temperature sensor. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0028] The following is combined with Figure 1-5 This application is described in further detail.

[0029] The present application embodiment discloses a heat exchange regeneration gas purification device. Figure 1 , Figure 2 A heat exchange regeneration gas purification device includes an air intake component 1, one side of the air intake component 1 is connected to a deoxygenation heat exchanger 2, and one side of the deoxygenation heat exchanger 2 is also connected to a heater 3, the heater 3 heats the raw gas discharged from the deoxygenation heat exchanger 2, and the heated gas enters the interior of the deoxygenator 4, and one end of the gas outlet of the deoxygenator 4 is relatively connected to the deoxygenation heat exchanger 2 to heat the raw gas; the other end is connected to a regeneration heat exchanger 5 to heat the regeneration gas for the regeneration heat exchanger 5. The deoxygenated hydrogen gas discharged from the deoxygenation heat exchanger 2 and the regeneration heat exchanger 5 merges and enters the interior of the cooling component 6 for cooling. After the cooling component 6 cools the gas, it is discharged into the interior of the drying component 7.

[0030] Reference Figure 2 , Figure 3 The air inlet assembly 1 includes a buffer tank 11, the air inlet end of the buffer tank 11 is fixedly connected with an air inlet pipe, the air outlet end of the buffer tank 11 is fixedly connected with an air outlet pipe, one end of the air outlet pipe is connected to the buffer tank 11, and the other end of the air outlet pipe is relatively connected to the deoxygenation heat exchanger 2. The external raw gas enters the interior of the buffer tank 11 through the air inlet pipe, and after the liquid water is removed from the interior of the buffer tank 11, it enters the interior of the deoxygenation heat exchanger 2 through the air outlet pipe. The raw gas exchanges heat with the deoxygenated hydrogen in the deoxygenation heat exchanger 2, and enters the interior of the heater 3 when the raw gas is heated to a certain predetermined temperature. The heater 3 can be turned on as needed to further heat the raw gas to the temperature required for the reaction, and then enter the interior of the deoxygenator 4 to remove oxygen impurities in the raw gas.

[0031] The gas outlet end of the deoxidizer 4 is divided into two pipelines, one of which is relatively connected to the regeneration heat exchanger 5 to heat the regeneration gas, and the other pipeline is relatively connected to the deoxidation heat exchanger 2 to heat the raw gas.

[0032] Reference Figure 3 , Figure 4 , a heat exchange pipe 21 is fixedly connected to the deoxygenation heat exchanger 2, and the heat exchange pipe 21 includes a first heat exchange branch pipe 211, one end of the first heat exchange branch pipe 211 is relatively connected to the deoxygenation heat exchanger 2, and the other end of the first heat exchange branch pipe 211 is relatively connected to the cooling assembly 6. A second heat exchange branch pipe 212 is fixedly connected to the side wall of the first heat exchange branch pipe 211, the first heat exchange branch pipe 211 is relatively connected to the second heat exchange branch pipe 212, and the end of the second heat exchange branch pipe 212 away from the first heat exchange branch pipe 211 is relatively connected to the regeneration heat exchanger 5. A regulating valve 213 is fixedly connected to the end of the second heat exchange branch pipe 212 located near the regeneration heat exchanger 5, and the regulating valve 213 can control the outlet flow of the regeneration heat exchanger 5.

[0033] The cooling assembly 6 includes a raw material normal temperature cooler 61, which is relatively connected to the first heat exchange branch pipe 211, so that the deoxygenated hydrogen gas discharged from the deoxygenation heat exchanger 2 and the regeneration heat exchanger 5 is combined and enters the interior of the raw material normal temperature cooler 61 for cooling. The gas outlet of the raw material normal temperature cooler 61 is connected to the first gas-water separator 611, and liquid condensed water is removed from the interior of the first gas-water separator 611, and the condensed water remains in the interior of the first gas-water separator 611.

[0034] A raw material low temperature cooler 62 is provided on one side of the raw material normal temperature cooler 61, and the raw material low temperature cooler 62 is connected to the first gas-water separator 611. The deoxygenated hydrogen gas containing saturated water vapor enters the interior of the raw material low temperature cooler 62 for further cooling, and part of the water vapor in the deoxygenated hydrogen gas is condensed, and the liquid water is removed along with the deoxygenated hydrogen gas entering the interior of the second gas-water separator 621. The liquid water is retained inside the first gas-water separator 611 and the second gas-water separator 621.

[0035] A regeneration normal temperature cooler 63 is provided on one side of the raw material low temperature cooler 62. The air inlet end of the regeneration normal temperature cooler 63 is relatively connected to the drying assembly 7. The air outlet end of the regeneration normal temperature cooler 63 is connected to the third gas-water separator 631. Part of the water vapor is condensed and enters the third gas-water separator 631 with the regeneration gas to remove liquid water. The outlet end of the third gas-water separator 631 is connected to the regeneration low temperature cooler 64. The air outlet end of the regeneration low temperature cooler 64 is connected to the fourth gas-water separator 641. The regeneration gas enters the interior of the regeneration low temperature cooler 64 for further cooling. The liquid water generated by condensation enters the interior of the fourth gas-water separator 641 together with the regeneration gas.

[0036] A heat exchange pipe 65 is arranged on the outside of the cooling component 6, and the heat exchange pipe 65 includes a circulating cooling water pipe 651 and a low-temperature cooling water pipe 652. The circulating cooling water pipe 651 provides cooling water to the raw material normal temperature cooler 61 and the regeneration normal temperature cooler 63 respectively, and the low-temperature cooling water pipe 652 provides cooling water to the raw material low-temperature cooler 62 and the regeneration low-temperature cooler 64 respectively.

[0037] A liquid storage tank 8 is provided outside the cooling assembly 6, one end of the liquid storage tank 8 is relatively connected to the circulating cooling water pipeline 651, and the other end is relatively connected to the buffer tank 11, the first gas-water separator 611, the second gas-water separator 621, the third gas-water separator 631 and the fourth gas-water separator 641, respectively, so that the liquid water discharged from the buffer tank 11, the first gas-water separator 611, the second gas-water separator 621, the third gas-water separator 631 and the fourth gas-water separator 641 can flow into the interior of the liquid storage tank 8 through the pipeline. A discharge component is also provided at one end of the liquid storage tank 8, and the discharge component can discharge excess liquid in the liquid storage tank 8.

[0038] Reference Figure 1 , Figure 5 The drying assembly 7 includes three drying groups arranged relatively to each other, and the three drying groups include a first dryer 71, a second dryer 72 and a third dryer 73. The outlet end of the second gas-water separator 621 is fixedly connected with a first drying pipe 74. The air inlet end of the first dryer 71 is fixedly connected with a first drying branch pipe 741, and the first drying branch pipe 741 is relatively connected to the first drying pipe 74. The air inlet end of the second dryer 72 is fixedly connected with a second drying branch pipe 742, and the second drying branch pipe 742 is relatively connected to the first drying pipe 74. The air inlet end of the third dryer 73 is fixedly connected with a third drying branch pipe 743, and the third drying branch pipe 743 is relatively connected to the first drying pipe 74.

[0039] A regeneration pipeline 75 is provided on the regeneration normal temperature cooler 63. A first regeneration branch pipe 751 is fixedly connected to the gas outlet of the first dryer 71, and the first regeneration branch pipe 751 is relatively connected to the regeneration pipeline 75. A second regeneration branch pipe 752 is fixedly connected to the gas outlet of the second dryer 72, and the second regeneration branch pipe 752 is relatively connected to the regeneration pipeline 75. A third regeneration branch pipe 753 is fixedly connected to the gas outlet of the third dryer 73, and the third regeneration branch pipe 753 is connected to the regeneration pipeline 75.

[0040] The fourth gas-water separator 641 is fixedly connected to a reflux pipe 76, and the air inlet end of the first dryer 71 is fixedly connected to a first reflux branch pipe 761, which is relatively connected to the reflux pipe 76. The air inlet end of the second dryer 72 is fixedly connected to a second reflux branch pipe 762, which is relatively connected to the reflux pipe 76. The air inlet end of the third dryer 73 is fixedly connected to a third reflux branch pipe 763, which is relatively connected to the reflux pipe 76.

[0041] Reference Figure 3 , Figure 5 The regenerative heat exchanger 5 is fixedly connected with a regenerative heat exchange air inlet pipe 77, and the outlet end of the first dryer 71 is fixedly connected with a first regenerative heat exchange air inlet branch pipe 771, which is relatively connected to the regenerative heat exchange air inlet pipe 77. The outlet end of the second dryer 72 is fixedly connected with a second regenerative heat exchange air inlet branch pipe 772, which is relatively connected to the regenerative heat exchange air inlet pipe 77. The outlet end of the third dryer 73 is fixedly connected with a third regenerative heat exchange air inlet branch pipe 773, which is relatively connected to the regenerative heat exchange air inlet pipe 77. The regenerative heat exchange air inlet pipe 77 is also relatively connected to the filter 9.

[0042] The regenerative heat exchanger 5 is also fixedly connected to a regenerative heat exchange outlet pipe 78. The air inlet end of the first dryer 71 is fixedly connected to a first regenerative heat exchange outlet branch pipe 781, and the first regenerative heat exchange outlet branch pipe 781 is relatively connected to the regenerative heat exchange outlet pipe 78. The air inlet end of the second dryer 72 is fixedly connected to a second regenerative heat exchange outlet branch pipe 782, and the second regenerative heat exchange outlet branch pipe 782 is relatively connected to the regenerative heat exchange outlet pipe 78. The air inlet end of the third dryer 73 is fixedly connected to a third regenerative heat exchange outlet branch pipe 783, and the third regenerative heat exchange outlet branch pipe 783 is relatively connected to the regenerative heat exchange outlet pipe 78.

[0043] A connecting pipe 79 is provided between the regenerative heat exchange air inlet pipe 77 and the regenerative heat exchange air outlet pipe 78, one end of the connecting pipe 79 is relatively connected to the regenerative heat exchange air inlet pipe 77, and the other end of the connecting pipe 79 is relatively connected to the regenerative heat exchange air outlet pipe 78. A first automatic valve 791 is fixedly connected to the connecting pipe 79, a second automatic valve 774 is fixedly connected to the regenerative heat exchange air inlet pipe 77, and a regulating valve 213 is fixedly connected to the second heat exchange branch pipe 212 of the regenerative heat exchanger 5.

[0044] The filter 9 is fixedly connected with a filter air inlet pipe 91, and the outlet end of the first dryer 71 is fixedly connected with a first filter air inlet branch pipe 911, and the first filter air inlet branch pipe 911 is relatively connected to the filter air inlet pipe 91. The outlet end of the second dryer 72 is fixedly connected with a second filter air inlet branch pipe 912, and the second filter air inlet branch pipe 912 is relatively connected to the filter air inlet pipe 91. The outlet end of the third dryer 73 is fixedly connected with a third filter branch pipe 913, and the third filter branch pipe 913 is relatively connected to the filter air inlet pipe 91.

[0045] Take the first dryer 71 working, the second dryer 72 regenerating, and the third dryer 73 adsorbing as an example: the deoxygenated hydrogen from the gas-water separator first enters the first dryer 71 through an automatic valve, and the dried gas flows out of the first dryer 71 and is divided into two paths. One path is used as product gas to enter the filter 9 through an automatic valve and flow out of the system, and the other path is used as regeneration gas to enter the regeneration heat exchanger 5 through an automatic valve, and after heat exchange with the deoxygenated hydrogen, it rises to a certain temperature and enters the second dryer 72.

[0046] The moisture in the desiccant bed in the second dryer 72 is taken out by the regeneration gas, and enters the regeneration normal temperature cooler 63 for cooling through the automatic valve. Part of the water vapor is condensed and enters the third gas-water separator 631 with the regeneration gas to remove liquid water. Then it enters the regeneration low temperature cooler 64 for further cooling, and the liquid water produced by condensation enters the fourth gas-water separator 641 together with the regeneration gas. The regeneration gas flows into the third dryer 73 through the automatic valve, and the water vapor therein is adsorbed by the desiccant. The dry regeneration gas flows out of the third dryer 73 through the automatic valve, merges with the product hydrogen flowing out of the first dryer 71, and is used as the product gas delivery device after passing through the filter 9.

[0047] When the working time of the first dryer 71 reaches the set time, the deoxygenated hydrogen from the second gas-water separator 621 is changed to enter the second dryer 72 first. At this time, the second dryer 72 is in the working state, the third dryer 73 is in the regeneration state, and the first dryer 71 is in the adsorption state.

[0048] Reference Figure 3 , Figure 4 A first temperature sensor 100 is fixedly connected to the relatively connected pipeline between the deoxygenation heat exchanger 2 and the heater 3, and a second temperature sensor 101 is fixedly connected to one end of the regeneration heat exchange outlet pipe 78 close to the regeneration heat exchanger 5, a third temperature sensor 102 is fixedly connected to the heating device of the heater 3, and a fourth temperature sensor 103 is fixedly connected to the outlet end of the heater 3. The third sensor is used to detect the temperature in the heater 3 to avoid damage to the heater 3 due to excessive heating temperature. The fourth temperature sensor 103 is used to detect the temperature of the raw gas flowing out of the heater 3, and controls whether the heater 3 is turned on by its deviation from the set value.

[0049] Reference Figure 4 , Figure 5 A fifth temperature sensor 104 is fixedly connected to the outlet pipe of the deoxidizer 4 for detecting the temperature of the deoxygenated hydrogen flowing out of the deoxidizer 4 and judging the hydrogen-oxygen reaction condition in the deoxidizer 4. A sixth temperature sensor 105 is fixedly connected to the heat exchange pipe 21 for detecting the temperature of the deoxygenated hydrogen flowing out of the deoxygenation heat exchanger 2 and the regeneration heat exchanger 5 and judging the heat exchange condition of the heat exchanger. A seventh temperature sensor 106 is fixedly connected to the side wall of the first drying pipe 74 for detecting the temperature of the deoxygenated hydrogen flowing out of the second gas-water separator 621 and judging the cooling effect of the deoxygenated hydrogen. An eighth temperature sensor 107 is fixedly connected to the side wall of the regeneration pipe 75 for detecting the temperature of the regenerated gas flowing out of the dryer and judging the regeneration effect of the desiccant. A ninth temperature sensor 108 is fixedly connected to the reflux pipe 76 for detecting the temperature of the regenerated gas flowing out of the fourth gas-water separator 641 and judging the cooling effect of the regenerated gas.

[0050] When one of the three first dryers 71, the second dryer 72 and the third dryer 73 is in the regeneration heating state, the second automatic valve 774 is opened, the first automatic valve 791 is closed, and the regulating valve 213 adjusts the opening according to the set temperature of the second temperature sensor 101, thereby adjusting the flow rate of the deoxygenated hydrogen gas passing through the regeneration heat exchanger 5. When the set temperature of the dryer exceeds the set value or the regeneration time exceeds the set value, the second automatic valve 774 is closed, the first automatic valve 791 is opened, the regeneration gas does not pass through the regeneration heat exchanger 5 to be heated, and the dryer is in the regeneration cooling state.

[0051] When the drying tower is in a non-regenerative heating state, the second automatic valve 774 is closed, the first automatic valve 791 is opened, and the regulating valve 213 adjusts the opening according to the set temperature of the first temperature sensor 100 to maintain the raw hydrogen flowing out of the deoxygenation heat exchanger 2 at a certain temperature.

[0052] In this application, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. 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.

[0053] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A heat exchange regeneration gas purification device, characterized in that: The invention comprises an air intake component (1), one end of which is fixedly connected to a deoxygenation heat exchanger (2), the air outlet end of the deoxygenation heat exchanger (2) is connected to the air intake end of a heater (3), the air outlet end of the heater (3) is connected to a deoxygenator (4), one end of the deoxygenator (4) is further provided with a regeneration heat exchanger (5), one end of the air outlet end of the deoxygenator (4) is relatively connected to the regeneration heat exchanger (5), the other end of the air outlet end of the deoxygenator (4) is relatively connected to the deoxygenation heat exchanger (2), the deoxygenation heat exchanger (2) is relatively connected to the regeneration heat exchanger (5) and leads to the interior of a cooling component (6), one side of the cooling component (6) is provided with a drying component (7), the drying component (7) is relatively connected to the cooling component (6).

2. A heat exchange regeneration gas purification device according to claim 1, characterized in that: The cooling component (6) comprises a raw material normal temperature cooler (61), the air inlet end of the raw material normal temperature cooler (61) is fixedly connected to a heat exchange tube (21), one end of the heat exchange tube (21) is relatively connected to the deoxygenation heat exchanger (2), and the heat exchange tube (21) is also relatively connected to the regeneration heat exchanger (5), and the raw material normal temperature cooler (61) is connected to a first gas-water separator (611).

3. A heat exchange regeneration gas purification device according to claim 2, characterized in that: The first gas-water separator (611) is connected to a raw material low-temperature cooler (62), the raw material low-temperature cooler (62) is connected to a second gas-water separator (621), and the second gas-water separator (621) is relatively connected to the drying component (7).

4. The heat exchange regeneration gas purification device according to claim 1, characterized in that: The drying assembly (7) comprises a first dryer (71), a second dryer (72) and a third dryer (73); the gas outlet ends of the first dryer (71), the second dryer (72) and the third dryer (73) are connected to a filter (9); the filter (9) filters the gas flowing out of the first dryer (71), the second dryer (72) and the third dryer (73) and discharges the gas as product hydrogen; the outlet ends of the first dryer (71), the second dryer (72) and the third dryer (73) are also connected to a regeneration gas circuit.

5. A heat exchange regeneration gas purification device according to claim 4, characterized in that: The regeneration gas circuit comprises a regeneration pipeline that relatively connects the first dryer (71), the second dryer (72) and the third dryer (73); the gas outlet ends of the first dryer (71), the second dryer (72) and the third dryer (73) are connected to a regeneration normal temperature cooler (63); the outlet end of the regeneration normal temperature cooler (63) is connected to a third gas-water separator (631); the third gas-water separator (631) is connected to a regeneration low-temperature cooler (64); the regeneration low-temperature cooler (64) is connected to a fourth gas-water separator (641); the fourth gas-water separator (641) is relatively connected to the first dryer (71), the second dryer (72) and the third dryer (73); the gas outlet ends of the first dryer (71), the second dryer (72) and the third dryer (73) are relatively connected to the filter (9).

6. A heat exchange regeneration gas purification device according to claim 5, characterized in that: The regeneration pipeline comprises a regeneration heat exchange air inlet pipe (77), and the regeneration heat exchange air inlet pipe (77) is respectively connected to the first dryer (71), the second dryer (72) and the third dryer (73); the other end of the regeneration heat exchange air inlet pipe (77) is connected to the regeneration heat exchanger (5); the air outlet end of the regeneration heat exchanger (5) is connected to the regeneration heat exchange air outlet pipe (78), and the regeneration heat exchange air outlet pipe (78) is connected to the first dryer (71), the second dryer (72) and the third dryer (73).

7. A heat exchange regeneration gas purification device according to claim 6, characterized in that: A connecting pipe (79) is provided between the regenerative heat exchange air inlet pipe (77) and the regenerative heat exchange air outlet pipe (78), and the connecting pipe (79) relatively connects the regenerative heat exchange air inlet pipe (77) and the regenerative heat exchange air outlet pipe (78). A control valve is fixedly connected to the regenerative heat exchange air inlet pipe (77), and a control valve is fixedly connected to the connecting pipe (79). A regulating valve (213) is provided on the pipe relatively connecting the regenerative heat exchanger (5) and the cooling component (6).

8. A heat exchange regeneration gas purification device according to claim 7, characterized in that: A first temperature sensor (100) is fixedly connected to the connecting pipeline between the deoxygenation heat exchanger (2) and the heater (3), and a second temperature sensor (101) is fixedly connected to the regeneration heat exchange outlet pipeline (78).

9. A heat exchange regeneration gas purification device according to claim 8, characterized in that: When the drying component (7) is in a regenerative heating state, the control valve of the regenerative heat exchange air intake pipe (77) is opened, the control valve of the connecting pipe (79) is closed, and the regulating valve (213) adjusts the opening according to the set temperature of the second temperature sensor (101); when the set temperature of the drying component (7) exceeds the set value or the regeneration time exceeds the set value, the drying component (7) is in a non-regenerative heating state, the control valve of the regenerative heat exchange air intake pipe (77) is closed, and the control valve of the connecting pipe (79) is opened.

10. The heat exchange regeneration gas purification device according to claim 1, characterized in that: The air intake assembly (1) comprises a buffer tank (11), the air intake end of the buffer tank (11) is connected to an air intake pipe, and the air outlet end of the buffer tank (11) is relatively connected to the deoxygenation heat exchanger (2).

Images