CN220551791U - Reducing CO in purified gas 2 Content device - Google Patents
Reducing CO in purified gas 2 Content device Download PDFInfo
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- CN220551791U CN220551791U CN202322162552.XU CN202322162552U CN220551791U CN 220551791 U CN220551791 U CN 220551791U CN 202322162552 U CN202322162552 U CN 202322162552U CN 220551791 U CN220551791 U CN 220551791U
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- pipeline
- pipe
- air inlet
- gas
- purging pipeline
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- 238000010926 purge Methods 0.000 claims abstract description 70
- 238000007664 blowing Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000012108 two-stage analysis Methods 0.000 claims abstract description 5
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 4
- 238000005261 decarburization Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a method for reducing CO in purified gas 2 The device comprises a purging pipeline and a two-stage analysis gas buffer tank for feeding gas into the purging pipeline, wherein a Roots blower is arranged on one side of the purging pipeline and is communicated with the purging pipeline through a conveying pipeline; the conveying pipeline comprises a first connecting pipe and a second connecting pipe which are communicated with the purging pipeline, and an air inlet pipe and an air outlet pipe which are respectively communicated with the air inlet and the air outlet of the Roots blower. In the utility model, the gas blown into the purging pipeline by the inclined blowing section can accelerate the gas flow speed at the connection position of the purging pipeline and the inclined blowing section, and the gas blown into the purging pipeline by the inclined blowing section can accelerate the gas flow speed in the purging pipeline according to the principle of high flow speed and low pressure, thereby being more beneficial to increasing the gas quantity passing through the purging pipeline in unit time and further reducing CO in the purified gas at the outlet of the purifying section 2 Is contained in the composition.
Description
Technical Field
The utility model belongs to the technical field of synthetic ammonia decarburization, and particularly relates to a method for reducing CO in purified gas 2 Content device.
Background
The decarbonization section adopts pressure swing adsorption PSA control technology, uses silica gel adsorbent to carry out unpowered CO 2 、H 2 Separation and recovery, throughput 140000Nm 3 Gas exchange/h, CO 2 Recovery rate is 70%, concentration is 98%, H 2 The recovery rate is 99.2 percent, replaces the traditional decarburization technology, becomes the direction of the decarburization process in the production of synthetic ammonia, is widely adopted by a plurality of large-scale synthetic ammonia enterprises and petrochemical industry fields, and is mainly characterized in that: the power consumption of ton ammonia is reduced by about 100kwh, the process is stable in operation, easy to operate and high in recovery efficiency, DCS control is adopted completely, and field operation is not needed manually.
The current shift gas volume reaches 190000 ～ 2000000Nm 3 And/h, the gas quantity is increased to about 40% of the original design. After the transformation air volume is increased, the analysis air volume is correspondingly increased, the emptying volume is increased, the air volume is limited by the pipeline in the original design, the resistance is increased, and finally the air volume is causedAs a result of which the CO in the purge gas at the outlet of the purge section 2 The content is higher, about 2.0 to 2.3 percent, and no effective regulating means is available for reducing CO in the purified gas at the outlet of the purifying section under the condition of full load at present 2 Is contained in the composition.
Disclosure of Invention
The utility model aims at: in order to solve the problems pointed out in the background art, a method for reducing CO in purified gas is provided 2 Content device.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
reducing CO in purified gas 2 The device comprises a purging pipeline and a two-stage analysis gas buffer tank for feeding gas into the purging pipeline, wherein a Roots blower is arranged on one side of the purging pipeline and is communicated with the purging pipeline through a conveying pipeline;
the conveying pipeline comprises a first connecting pipe and a second connecting pipe which are communicated with the purging pipeline, and an air inlet pipe and an air outlet pipe which are respectively communicated with an air inlet and an air outlet of the Roots blower, wherein the first connecting pipe is communicated with the air inlet pipe, and the second connecting pipe is communicated with the air outlet pipe;
the second connecting pipe comprises an inclined blowing section, and an included angle between the direction of gas blown into the purging pipeline from the inclined blowing section and the flowing direction of gas in the purging pipeline is smaller than 45 degrees.
Preferably, a self-regulating valve is installed on the pipe section of the purging pipeline, and the self-regulating valve is positioned between the first connecting pipe and the second connecting pipe.
Preferably, the second connecting pipe further comprises a connecting section integrally formed with the oblique blowing section, and the connecting section is connected with the exhaust pipe flange.
Preferably, the outside cover of sweeping the pipeline is equipped with the suction box, roots fan and pipeline all are located the inside of suction box.
Preferably, the sound absorbing box comprises a first part and a second part, wherein a first semicircular groove and a second semicircular groove are respectively formed in the first part and the second part, and the first semicircular groove and the second semicircular groove are matched to form a circular channel for the purge pipeline to penetrate.
Preferably, the sound absorbing box is provided with a heat radiating component for radiating heat of a motor on the Roots blower;
the heat dissipation assembly comprises a cold air inlet pipe, one end of the cold air inlet pipe extends to the inside of the sound absorption box and abuts against the periphery of the air inlet of the fan housing of the motor, and the other end of the cold air inlet pipe extends to the outside of the sound absorption box.
Preferably, a sealing ring is sleeved at one end of the cold air inlet pipe, a screw sleeve is fixed on the sound absorbing box, and the cold air inlet pipe is connected with the screw sleeve (in a threaded manner).
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. in the utility model, the gas blown into the purging pipeline by the inclined blowing section can accelerate the gas flow speed at the connection position of the purging pipeline and the inclined blowing section, and the gas blown into the purging pipeline by the inclined blowing section can accelerate the gas flow speed in the purging pipeline according to the principle of high flow speed and low pressure, thereby being more beneficial to increasing the gas quantity passing through the purging pipeline in unit time and further reducing CO in the purified gas at the outlet of the purifying section 2 Is contained in the composition.
2. In the utility model, the Roots blower and the conveying pipeline are both positioned in the sound absorbing box, so that on one hand, noise generated in the running process of the Roots blower can be absorbed by the sound absorbing box, the running noise of the whole device is reduced, and on the other hand, the sound absorbing box also plays a role in protecting the Roots blower and the conveying pipeline.
3. In the utility model, after the Roots blower is started, the motor on the Roots blower starts to rotate, so that the radiating fan blades in the fan housing of the motor also start to rotate at a high speed, and therefore, low-temperature gas in the external environment enters the fan housing of the motor through the cold air inlet pipe and is discharged to the surface of the motor through the fan housing, thereby achieving the purpose of radiating the motor.
Drawings
FIG. 1 shows a method for reducing CO in a purge gas according to the present utility model 2 A schematic overall sectional structure of the content device;
FIG. 2 shows a method for reducing CO in a purge gas according to the present utility model 2 A schematic overall side view structure of the content device;
FIG. 3 shows a method for reducing CO in a purge gas according to the present utility model 2 Schematic partial side view structure of the device;
FIG. 4 shows a method for reducing CO in a purge gas according to the present utility model 2 The structure of the heat dissipation component of the device is shown in the schematic diagram.
Legend description: 1. purging the pipeline; 2. roots blower; 21. a motor; 3. a delivery conduit; 31. a first connection pipe; 32. a second connection pipe; 321. a diagonal blowing section; 322. a connection section; 33. an air inlet pipe; 34. an exhaust pipe; 4. a heat dissipation assembly; 41. a cold air inlet pipe; 42. a seal ring; 43. a screw sleeve; 5. a self-regulating valve; 6. a sound suction box; 61. a first portion; 611. a first semicircular groove; 62. a second portion; 621. and a second semicircular groove.
Detailed Description
The utility model will now be described with reference to specific examples.
As shown in fig. 1 to 4, the present embodiment reduces CO in the purge gas 2 The device of content, including sweeping pipeline 1 and sending into the two-stage analysis gas buffer tank of gaseous in sweeping pipeline 1, foretell sweeping pipeline 1 and two-stage analysis gas buffer tank are prior art, and the details are not repeated here.
The utility model differs from the prior art in that: one side of the purging pipeline 1 is provided with a Roots blower 2, the Roots blower 2 is communicated with the purging pipeline 1 through a conveying pipeline 3, the Roots blower 2 is matched with the conveying pipeline 3 to break through the limitation of the purging pipeline 1, the air quantity passing through the purging pipeline 1 in unit time is increased, and the air quantity is increasedReducing CO in the purified gas at the outlet of the purifying section 2 Is contained in the composition.
Specifically, as shown in fig. 1, the conveying pipeline 3 includes a first connecting pipe 31 and a second connecting pipe 32 which are communicated with the purge pipeline 1, and an air inlet pipe 33 and an air outlet pipe 34 which are respectively communicated with an air inlet and an air outlet of the Roots blower 2, in this embodiment, the first connecting pipe 31 and the second connecting pipe 32 are welded with the purge pipeline 1, the first connecting pipe 31 and the air inlet pipe 33 and the second connecting pipe 32 and the air outlet pipe 34 are connected through flanges, the first connecting pipe 31 and the air inlet pipe 33 are communicated, the second connecting pipe 32 is communicated with the air outlet pipe 34, the second connecting pipe 32 further includes a connecting section 322 integrally formed with the inclined blowing section 321, the connecting section 322 is connected with the air outlet pipe 34 through flanges, wherein the second connecting pipe 32 includes the inclined blowing section 321, an included angle between a gas direction blown into the purge pipeline 1 from the inclined blowing section 321 and a gas flowing direction in the purge pipeline 1 is smaller than 45 °, so that a gas flowing speed at a connecting position of the inclined blowing section 321 and the purge pipeline 1 can be accelerated by using the inclined blowing section 321, and a gas flowing speed at a connecting position of the inclined blowing section 321 can be increased according to a principle that the flow speed is large and small, the gas flowing speed of the inclined blowing section 321 can be increased to the inside the purge pipeline 1 and the inside the purge pipeline 1 can be more purified, and the flow rate of the purge pipeline 1 can be increased, and the flow time can be increased by purifying and the gas can be purified, and the inside the purge pipeline 1 can be cooled, and the flow speed can be purified, and the flow is more purified, and the inside the pipeline is more 1 2 Is measured, and the content of CO in the purified gas at the outlet of the purifying section 2 The content of (2) is reduced from original 2.0-2.3% to 0.8%.
As shown in fig. 1, a self-regulating valve 5 is installed on a pipe section of the purge pipe 1, and the self-regulating valve 5 is located between a first connection pipe 31 and a second connection pipe 32.
During actual use, the Roots blower 2 is directly started, the Roots blower 2 pumps the gas in the purging pipeline 1 into the Roots blower 2 through the first connecting pipe 31 and the air inlet pipe 33, and then the gas re-enters the purging pipeline 1 through the air outlet pipe 34 and the second connecting pipe 32, so that the purpose of accelerating the flow speed of the gas in the purging pipeline 1 is achieved, namely the gas flow through the purging pipeline 1 in unit time is increased, in other words, the Roots blower is only additionally arranged under the condition that the original purging pipeline 1 is not changed2 can reduce the CO in the purified gas at the outlet of the purifying section 2 The content of (3) reduces the actual cost; moreover, the existence of the inclined blowing section 321 can accelerate the flow speed of the gas in the purging pipeline 1, which is more beneficial to increasing the gas quantity passing through the purging pipeline 1 in unit time.
As shown in fig. 1 to 3, in order to reduce the operation noise of the Roots blower 2, a sound absorbing box 6 is sleeved on the outer side of the purge pipeline 1, and the Roots blower 2 and the conveying pipeline 3 are positioned in the sound absorbing box 6, wherein the sound absorbing box 6 is formed by a metal sound absorbing plate or other sound absorbing material plates; the sound absorbing box 6 includes a first portion 61 and a second portion 62, where the first portion 61 and the second portion 62 are both rectangular box structures and are fixedly connected by bolts, the box openings of the two first portions 61 and the second portion 62 are close to each other and are connected together, the first portion 61 and the second portion 62 are respectively provided with a first semicircular groove 611 and a second semicircular groove 621, and the first semicircular groove 611 and the second semicircular groove 621 cooperate to form a circular channel through which the purge pipe 1 passes.
During actual use, because roots blower 2 and pipeline 3 all are located the inside of inhaling audio amplifier 6, consequently, on the one hand, the noise that roots blower 2 operation in-process produced can be absorbed by inhaling audio amplifier 6, reduced the operational noise of whole device, on the other hand, inhale audio amplifier 6 and also played the guard action to roots blower 2 and pipeline 3, simultaneously, because inhale audio amplifier 6 divide into first part 61 and second part 62 two parts, and form the circular passageway that supplies purge pipeline 1 to run through between first part 61 and the second part 62, consequently also made things convenient for the installation and the dismantlement of inhaling audio amplifier 6, the maintenance of being convenient for roots blower 2 and pipeline 3.
As shown in fig. 1 to 4, for the arrangement of the sound absorbing box 6, in order to facilitate the heat dissipation of the motor 21 on the Roots blower 2, a heat dissipation component 4 for dissipating the heat of the motor 21 on the Roots blower 2 is arranged on the sound absorbing box 6; specifically, as shown in fig. 4, the heat dissipation assembly 4 includes a cold air inlet pipe 41, one end of the cold air inlet pipe 41 extends to the inside of the sound absorption box 6 and abuts against the periphery of the fan housing air inlet of the motor 21, and the other end of the cold air inlet pipe 41 extends to the outside of the sound absorption box 6; one end of the cold air inlet pipe 41 is sleeved with a sealing ring 42, a screw sleeve 43 is fixed on the sound absorbing box 6, and the cold air inlet pipe 41 is in threaded connection with the screw sleeve 43.
When the Roots blower 2 is used, after the Roots blower 2 is started, the motor 21 thereon starts to rotate, so that the heat dissipation fan blades inside the fan housing of the motor 21 also start to rotate at a high speed, and therefore, low-temperature gas in the external environment enters the fan housing of the motor 21 through the cold air inlet pipe 41 and is discharged to the surface of the motor 21 through the fan housing, thereby achieving the purpose of heat dissipation of the motor 21.
Claims (7)
1. Reducing CO in purified gas 2 The device comprises a purging pipeline (1) and a two-stage analysis gas buffer tank for feeding gas into the purging pipeline (1), and is characterized in that a Roots blower (2) is arranged on one side of the purging pipeline (1), and the Roots blower (2) is communicated with the purging pipeline (1) through a conveying pipeline (3);
the conveying pipeline (3) comprises a first connecting pipe (31) and a second connecting pipe (32) which are communicated with the purging pipeline (1), and an air inlet pipe (33) and an air outlet pipe (34) which are respectively communicated with an air inlet and an air outlet of the Roots blower (2), wherein the first connecting pipe (31) is communicated with the air inlet pipe (33), and the second connecting pipe (32) is communicated with the air outlet pipe (34);
the second connecting pipe (32) comprises an inclined blowing section (321), and an included angle between the direction of gas blown into the purging pipeline (1) from the inclined blowing section (321) and the flowing direction of gas in the purging pipeline (1) is smaller than 45 degrees.
2. A method for reducing CO in a purge gas according to claim 1 2 The device for the content is characterized in that a self-regulating valve (5) is arranged on a pipe section of the purging pipeline (1), and the self-regulating valve (5) is positioned between a first connecting pipe (31) and a second connecting pipe (32).
3. A method for reducing CO in a purge gas according to claim 1 2 The content device is characterized in that the second connecting pipe(32) The air conditioner further comprises a connecting section (322) which is integrally formed with the inclined blowing section (321), and the connecting section (322) is in flange connection with the exhaust pipe (34).
4. A method for reducing CO in a purge gas according to claim 1 2 The device of content, its characterized in that, the outside cover of blowing pipeline (1) is equipped with suction box (6), roots fan (2) and pipeline (3) all are located the inside of suction box (6).
5. A method of reducing CO in a purge gas as claimed in claim 4 2 The device of content, characterized in that, sound box (6) include first part (61) and second part (62), first semicircle groove (611) and second semicircle groove (621) have been seted up respectively on first part (61) and second part (62), first semicircle groove (611) and second semicircle groove (621) cooperate and form the circular passageway that supplies purge pipe (1) to run through.
6. A method for reducing CO in a purge gas according to claim 4 or 5 2 The device is characterized in that a radiating component (4) for radiating the heat of a motor (21) on the Roots blower (2) is arranged on the sound absorbing box (6);
the heat dissipation assembly (4) comprises a cold air inlet pipe (41), one end of the cold air inlet pipe (41) extends to the inside of the sound absorption box (6) and abuts against the periphery of a fan housing air inlet of the motor (21), and the other end of the cold air inlet pipe (41) extends to the outside of the sound absorption box (6).
7. A method for reducing CO in a purified gas according to claim 6 2 The device is characterized in that a sealing ring (42) is sleeved at one end of the cold air inlet pipe (41), a screw sleeve (43) is fixed on the sound absorbing box (6), and the cold air inlet pipe (41) is in threaded connection with the screw sleeve (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322162552.XU CN220551791U (en) | 2023-08-11 | 2023-08-11 | Reducing CO in purified gas 2 Content device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322162552.XU CN220551791U (en) | 2023-08-11 | 2023-08-11 | Reducing CO in purified gas 2 Content device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551791U true CN220551791U (en) | 2024-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322162552.XU Active CN220551791U (en) | 2023-08-11 | 2023-08-11 | Reducing CO in purified gas 2 Content device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551791U (en) |
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2023
- 2023-08-11 CN CN202322162552.XU patent/CN220551791U/en active Active
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