Adjustable air supply device of rectifying tower air separation system
By designing an adjustable gas supply device in the air separation system of the distillation tower, and using the beam detection and rotation detection chamber, the problem of difficulty in cutting off the supply of impurity gas in a timely manner in the prior art is solved, and the improvement of gas purity and safety is achieved.
Patent Information
- Application Number
- CN202510221885.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-05-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to cut off the supply of impurity gas with an impurity content exceeding the standard in the nitrogen distillation tower in a timely manner, causing impurities to enter the clean gas and affect the gas purity.
An adjustable gas supply device for air separation system of the distillation tower is designed, including a shell cover, a detection chamber and a preliminary detection channel. The detection chamber is equipped with isolation components and clarified lime water. The presence of carbon dioxide in the gas is detected through a beam transmitter and a beam receiver, and the rotation detection chamber is staggered from the shell cover to block gas transport.
The impurity gas supply is cut off in a timely manner, preventing impurities from entering clean gas, improving the purity and safety of the gas, and reducing the delay risk of manual operation.
Smart Images
Figure CN120064287A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of gas supply devices, and specifically to an adjustable gas supply device for an air separation system of a rectification column. Background Art
[0002] The working principle of a nitrogen production rectification column is mainly based on air separation and rectification technologies, and separation is achieved by utilizing the boiling point difference between nitrogen and oxygen. Air is separated, usually by compressing it into a liquid state and then separating it according to the boiling point difference. The air is compressed below its saturated water vapor pressure to remove moisture, carbon dioxide, and impurities during the subsequent cooling and filtering processes.
[0003] The impurity content is detected and then the gas is transported outwards. However, there is a lag in impurity detection. If the impurities suddenly exceed the standard, it takes a certain amount of time for the excessive impurities to enter the detection instrument. By the time the instrument detects that the impurities exceed the standard, it is too late to switch to the standby high-purity gas supply, and the impure gas containing impurities has already been mixed into the clean gas. Additionally, untimely manual switching will result in more impure gas entering the crystal pulling furnace. Summary of the Invention
[0004] (I) Technical Problems to be Solved
[0005] In view of the deficiencies of the prior art, the present invention provides an adjustable gas supply device for an air separation system of a rectification column, which solves the problems raised in the above background art.
[0006] (II) Technical Solutions
[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: An adjustable gas supply device for an air separation system of a rectification column includes a housing cover. An air outlet pipe is connected to the top inside the housing cover, and an air inlet pipe is connected to the bottom of the housing cover. The air inlet pipe is connected to a T-shaped channel, and the right side of the T-shaped channel is connected to a preliminary detection channel. A detection chamber is connected inside the housing cover. An air outlet hole is opened at the top of the detection chamber, and an air inlet hole is opened at the bottom of the detection chamber.
[0008] The detection chamber can rotate ° within the T-shaped channel. An isolation component and a base are sequentially arranged in the detection chamber from top to bottom. The isolation component consists of an upper ring, a bracket, a semi-permeable membrane I, a lower ring, and a semi-permeable membrane II. The outer sides of the upper ring and the lower ring are connected to the inner wall of the detection chamber. The bracket is arranged inside the upper ring, and the semi-permeable membrane I is arranged between the upper ring and the bracket.
[0009] The semi-permeable membrane II is arranged inside the lower ring. The detection chamber is divided into upper, middle, and lower three spaces by the isolation component. Clarified lime water is poured into the middle space. A sensing detection module is placed inside the isolation component, and the sensing detection module is used to monitor whether there is still carbon dioxide gas in the transported gas.
[0010] When it is detected that carbon dioxide gas still exists in the conveying gas, the detection chamber is rotated by degrees to stagger the detection chamber and the shell cover, thereby preventing the gas from continuing to be conveyed.
[0011] Preferably, the sensing detection module includes a vertical pole, a light beam emitter, a column, a steel wire, and a light beam receiver. The vertical pole is vertically distributed in a ring between the upper ring and the lower ring. The column is vertically placed at the bottom of the bracket. One end of the steel wire is connected to the light beam emitter, and the other end of the vertical pole is connected to the light beam receiver. The light beam emitter is connected to the vertical pole, and the light beam receiver is connected to the column.
[0012] Preferably, the steel wire is in a horizontal state, a sliding hole is opened in the column shaft, the light beam receiver is slidably matched with the sliding hole, and a spring is connected between the light beam receiver and the inner wall of the sliding hole.
[0013] Preferably, the preliminary detection channel is S-shaped, and a plurality of solid particle absorption components are arranged in the preliminary detection channel. The solid particle absorption components include a vertical sliding rod, a sleeve and a filter layer block. The upper end of the sliding rod extends to the front and rear sides and is connected to the inner wall of the preliminary detection channel. The sleeve is connected to the sliding rod body, and the lower end of the sliding rod is slender and extends into the sleeve. The filter layer block is placed in the sleeve, and an air hole is opened in the upper half of the sleeve.
[0014] Preferably, it also includes a tension detection unit and an elastic rubber band. The tension detection unit is slidably matched with the lower end of the sliding rod. The filter layer block is placed on the tension detection unit. The upper end of the elastic rubber band is connected to the top of the inner wall of the sleeve, and the lower end of the elastic rubber band is connected to the filter layer block.
[0015] Preferably, a base is arranged in the space below the detection chamber, an air inlet channel is opened in the base, the lower end of the air inlet channel is connected to the air inlet of the detection chamber, the upper end of the air inlet channel faces the semi-permeable membrane 2, and a filter element is placed in the air inlet channel.
[0016] Preferably, the front and rear sides of the detection chamber are connected to each other with a transverse tube, the transverse tube is aligned with the center of the shell cover, the transverse tube extends outside the shell cover and is connected with a gear ring, and an electronic valve is provided in the T-shaped channel.
[0017] (III) Beneficial effects
[0018] The present invention provides an adjustable gas supply device for a distillation tower air separation system. It has the following beneficial effects:
[0019] 1. The adjustable gas supply device of the air separation system of the distillation tower is equipped with a shell cover, a detection chamber and a preliminary detection channel. An isolation component is arranged in the detection chamber, and clarified lime water is poured into the isolation component. Through the cooperation of a light beam transmitter, a light beam receiver and a steel wire, it is detected whether the conveyed gas contains carbon dioxide, and the rotation of the detection chamber is timely controlled to stagger with the shell cover to prevent impure gas from being mixed into the clean gas, thereby replacing manual cutting off and achieving the purpose of timely cutting off the gas supply. Brief Description of the Drawings
[0020] Figure 1 is a three-dimensional structure diagram of the present invention;
[0021] Figure 2 is a sectional view of the structure of the present invention;
[0022] Figure 3 is a working schematic diagram of the internal structure of the housing of the present invention;
[0023] Figure 4 is a schematic diagram of the structure of the carbon dioxide detection component of the present invention;
[0024] Figure 5 is a schematic diagram of the partial structure of the present invention;
[0025] Figure 6 is the present invention Figure 5 an enlarged view of the structure at A in;
[0026] Figure 7 is a schematic diagram of the structure of the solid particle detection component of the present invention.
[0027] In the figure: 1 housing, 2 T-shaped channel, 3 preliminary detection channel, 4 detection chamber, 41 horizontal pipe, 42 toothed ring, 5 isolation component, 51 upper ring, 52 bracket, 53 semi-permeable membrane 1, 54 lower ring, 55 semi-permeable membrane 2, 56 vertical rod, 561 light beam emitter, 57 cylinder, 571 sliding hole, 58 steel wire, 59 spring, 510 light beam receiver, 6 base, 61 air inlet channel, 62 filter element, 7 solid particle absorption component, 71 sliding rod, 72 sleeve, 721 air hole, 73 tensile force detection unit, 74 filter layer block, 75 elastic rubber band. Detailed Description of the Invention
[0028] An embodiment of the present invention provides an adjustable gas supply device for a rectifying tower air separation system, as Figure 1-7 shown, including a housing 1, an air outlet pipe is welded to the inner top of the housing 1, an air inlet pipe is welded to the bottom of the housing 1, a T-shaped channel 2 is fixedly installed on the air inlet pipe, a preliminary detection channel 3 is fixedly installed on the right side of the T-shaped channel 2, a detection chamber 4 is pivotally connected in the housing 1, an air outlet hole is opened at the top of the detection chamber 4, and an air inlet hole is opened at the bottom of the detection chamber 4. During operation, the air outlet hole is aligned with the air outlet pipe, and the air inlet hole is aligned with the air inlet pipe.
[0029] The detection chamber 4 can rotate 60° in the T-shaped channel 2. An isolation component 5 and a base 6 are sequentially arranged in the detection chamber 4 from top to bottom. The isolation component 5 is composed of an upper ring 51, a bracket 52, a semi-permeable membrane 1 53, a lower ring 54 and a semi-permeable membrane 2 55. The outer sides of the upper ring 51 and the lower ring 54 are welded to the inner wall of the detection chamber 4, the bracket 52 is welded in the upper ring 51, and the semi-permeable membrane 1 53 is fixedly installed between the upper ring 51 and the bracket 52.
[0030] The second semipermeable membrane 55 is fixedly installed in the lower ring 54, and the first semipermeable membrane 53 and the second semipermeable membrane 55 only allow the conveying gas to pass from bottom to top.
[0031] The interior of the detection chamber 4 is divided into three spaces: upper, middle and lower by the isolation component 5. The middle space is filled with clarified lime water. A sensing detection module is placed in the isolation component 5. The sensing detection module is used to monitor whether carbon dioxide gas still exists in the transported gas.
[0032] When it is detected that carbon dioxide gas still exists in the conveying gas, the detection chamber 4 is rotated 60°, the air inlet pipe is no longer aligned with the air inlet, and the air outlet pipe is no longer aligned with the air outlet, so that the detection chamber 4 is staggered with the shell cover 1, hindering the continued delivery of gas.
[0033] The sensing detection module includes a vertical pole 56, a light beam emitter 561, a column 57, a steel wire 58, and a light beam receiver 510. The vertical pole 56 is vertically distributed and welded between the upper ring 51 and the lower ring 54. The column 57 is vertically fixed at the bottom of the bracket 52. One end of the steel wire 58 is fixedly tied to the light beam emitter 561, and the other end of the vertical pole 56 is fixedly tied to the light beam receiver 510. The light beam emitter 561 is fixedly installed together with the vertical pole 56, and the light beam receiver 510 is connected to the column 57.
[0034] The steel wire 58 is in a horizontal state. A sliding hole 571 is opened in the rod body of the column 57. The light beam receiver 510 is slidably matched with the sliding hole 571. A spring 59 is fixedly installed between the light beam receiver 510 and the inner wall of the sliding hole 571.
[0035] Combined with Figure 2 Under normal working conditions, the steel wire 58 is straightened by the spring 59. The semipermeable membrane can prevent the leakage of clarified lime water. The light beam receiver 510 and the light beam transmitter 561 form a grating, which detects whether the steel wire 58 is deformed.
[0036] Working principle: Gas enters the middle space. If the gas contains carbon dioxide, the clear lime water starts to become turbid, and calcium carbonate precipitates are produced in the liquid. The precipitates will adhere to the steel wire 58, causing the steel wire 58 to sag and the spring 59 to be stretched.
[0037] In the early stage, the carbon dioxide in the gas will be absorbed by the clear lime water, but as the liquid gradually becomes turbid, the attachments on the steel wire 58 increase. After the grating senses the deformation of the steel wire 58, it feeds back the information to the external computer terminal. The computer terminal controls the detection chamber 4 to rotate 60°, thereby achieving the purpose of isolating the gas from continuing to be transported.
[0038] The preliminary detection channel 3 is S-shaped, and multiple solid particle absorption components 7 are arranged in the preliminary detection channel 3. The solid particle absorption component 7 includes a vertical slide bar 71, a sleeve 72 and a filter layer block 74. The upper end of the slide bar 71 extends to the front and rear sides and is welded to the inner wall of the preliminary detection channel 3. The sleeve 72 is welded to the rod body of the slide bar 71. The lower end of the slide bar 71 is slender and extends into the sleeve 72. The filter layer block 74 is placed in the sleeve 72. The upper half of the sleeve 72 is provided with an air hole 721.
[0039] It also includes a tension detection unit 73 and an elastic rubber band 75. The tension detection unit 73 is slidably matched with the lower end of the slide rod 71. The filter layer block 74 is fixedly installed on the tension detection unit 73. The upper end of the elastic rubber band 75 is fixedly bound to the top of the inner wall of the sleeve 72, and the lower end of the elastic rubber band 75 is fixedly bound to the filter layer block 74.
[0040] A base 6 is fixedly installed in the lower space of the detection chamber 4, and an air inlet channel 61 is opened in the base 6. The lower end of the air inlet channel 61 is connected to the air inlet of the detection chamber 4, and the upper end of the air inlet channel 61 faces the semipermeable membrane 2 55. A filter element 62 is fixedly installed in the air inlet channel 61.
[0041] The front and rear sides of the detection chamber 4 are welded with a transverse tube 41, which is aligned with the center of the shell 1, extends outside the shell 1, and is welded with a gear ring 42. By driving the transverse tube 41, the detection chamber 4 is driven to deflect.
[0042] An electronic valve is fixedly installed in the T-shaped channel 2, and the lower end of the T-shaped channel 2 is connected to the secondary impurity removal facility.
[0043] An electronic valve is also installed in the transverse pipe 41 of the detection chamber 4 .
[0044] When the liquid in the middle space becomes turbid, the detection chamber 4 is staggered with the shell cover 1. The transported gas is reprocessed. Then, carbon dioxide gas is transported through the cross bar 41, and the excess carbon dioxide gas reacts with the sediment and water to form soluble calcium bicarbonate, which can easily restore clarity again.
[0045] The grating can work again, and the grating senses the degree of deformation of the steel wire 58. When the sediment attached to the steel wire 58 completely disappears, the spring 59 straightens the steel wire 58 again. After the grating feeds back the information, it stops sending carbon dioxide gas. The workers drain the liquid in the middle space and re-inject clean, clear lime water.
[0046] In the initial test, when the gas contains solid particle impurities, the gas passes through the sleeve 72, the filter layer block 74 absorbs the solid particle impurities, the weight above the tension detection unit 73 increases, the elastic rubber band 75 is stretched, the value measured by the tension detection unit 73 changes, and the information is fed back to the external computer terminal. After receiving the information, the computer terminal acts as an electronic valve to change the direction of the gas, so that the transported gas is re-introduced into the impurity removal facility to prevent impure gas from entering the high-purity gas.
[0047] In summary, the adjustable gas supply device of the distillation tower air separation system is equipped with a shell cover 1, a detection chamber 4 and a preliminary detection channel 3. An isolation component is provided in the detection chamber 4, and clarified lime water is poured into the isolation component. The light beam transmitter 561, the light beam receiver 510 and the steel wire 58 cooperate to detect whether the conveyed gas contains carbon dioxide, and the detection chamber 4 is timely controlled to rotate and stagger with the shell cover 1 to prevent impure gas from being mixed into the clean gas, thereby replacing manual cutting off and achieving the purpose of timely cutting off the gas supply.
[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An adjustable gas supply device for a distillation tower air separation system, comprising a housing (1), characterized in that: The top of the shell cover (1) is connected to an air outlet pipe, the bottom of the shell cover (1) is connected to an air inlet pipe, the air inlet pipe is connected to a T-shaped channel (2), the right side of the T-shaped channel (2) is connected to a preliminary detection channel (3), the shell cover (1) is connected to a detection chamber (4), the top of the detection chamber (4) is provided with an air outlet hole, and the bottom of the detection chamber (4) is provided with an air inlet hole; The detection chamber (4) is capable of rotating 60 degrees in the T-shaped channel (2). An isolation component (5) and a base (6) are arranged in sequence from top to bottom in the detection chamber (4). The isolation component (5) is composed of an upper circular ring (51), a bracket (52), a semipermeable membrane 1 (53), a lower circular ring (54) and a semipermeable membrane 2 (55). The outer sides of the upper circular ring (51) and the lower circular ring (54) are connected to the inner wall of the detection chamber (4). The bracket (52) is arranged in the upper circular ring (51), and the semipermeable membrane 1 (53) is arranged between the upper circular ring (51) and the bracket (52). The second semipermeable membrane (55) is arranged in the lower ring (54), and the interior of the detection chamber (4) is divided into three spaces, namely, upper, middle and lower spaces, by the isolation component (5). The middle space is filled with clarified lime water. A sensing detection module is placed in the isolation component (5), and the sensing detection module is used to monitor whether carbon dioxide gas still exists in the transported gas. When it is detected that carbon dioxide gas still exists in the transported gas, the detection chamber (4) is rotated by 60 degrees, so that the detection chamber (4) and the shell cover (1) are offset, thereby preventing the gas from continuing to be transported.
2. The adjustable gas supply device of a distillation tower air separation system according to claim 1, characterized in that: The sensing detection module comprises a vertical pole (56), a light beam emitter (561), a column (57), a steel wire (58), and a light beam receiver (510). The vertical pole (56) is vertically distributed in a ring between an upper circular ring (51) and a lower circular ring (54). The column (57) is vertically arranged at the bottom of a bracket (52). One end of the steel wire (58) is connected to the light beam emitter (561), and the other end of the vertical pole (56) is connected to the light beam receiver (510). The light beam emitter (561) is connected to the vertical pole (56), and the light beam receiver (510) is connected to the column (57).
3. The adjustable gas supply device of a distillation tower air separation system according to claim 2, characterized in that: The steel wire (58) is in a horizontal state, a sliding hole (571) is provided in the rod body of the column (57), the light beam receiver (510) is slidably matched with the sliding hole (571), and a spring (59) is connected between the light beam receiver (510) and the inner wall of the sliding hole (571).
4. The adjustable gas supply device of the distillation tower air separation system according to claim 3, characterized in that: The preliminary detection channel (3) is S-shaped. A plurality of solid particle absorption components (7) are arranged in the preliminary detection channel (3). The solid particle absorption components (7) include a vertical slide bar (71), a sleeve (72) and a filter layer block (74). The upper end of the slide bar (71) extends forward and rearward and is connected to the inner wall of the preliminary detection channel (3). The sleeve (72) is connected to the rod body of the slide bar (71). The lower end of the slide bar (71) is slender and extends into the sleeve (72). The filter layer block (74) is arranged in the sleeve (72). An air hole (721) is provided in the upper half of the sleeve (72).
5. The adjustable gas supply device of the distillation tower air separation system according to claim 4, characterized in that: It also includes a tension detection unit (73) and an elastic rubber band (75). The tension detection unit (73) is slidably matched with the lower end of the sliding rod (71). The filter layer block (74) is placed on the tension detection unit (73). The upper end of the elastic rubber band (75) is connected to the top of the inner wall of the sleeve (72), and the lower end of the elastic rubber band (75) is connected to the filter layer block (74).
6. The adjustable gas supply device of a distillation tower air separation system according to claim 5, characterized in that: A base (6) is arranged in the lower space of the detection chamber (4), an air inlet channel (61) is provided in the base (6), the lower end of the air inlet channel (61) is connected to the air inlet of the detection chamber (4), the upper end of the air inlet channel (61) faces the second semi-permeable membrane (55), and a filter element (62) is arranged in the air inlet channel (61).
7. The adjustable gas supply device of the distillation tower air separation system according to claim 6, characterized in that: The front and rear sides of the detection chamber (4) are both connected to a transverse tube (41), the transverse tube (41) is aligned with the center of the shell cover (1), the transverse tube (41) extends outside the shell cover (1) and is connected to a gear ring (42), and an electronic valve is provided in the T-shaped channel (2).