CN114682581A - Acid gas cleaning device and online washing method for preventing acid gas pipe from being blocked - Google Patents
Acid gas cleaning device and online washing method for preventing acid gas pipe from being blocked Download PDFInfo
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- CN114682581A CN114682581A CN202210319816.5A CN202210319816A CN114682581A CN 114682581 A CN114682581 A CN 114682581A CN 202210319816 A CN202210319816 A CN 202210319816A CN 114682581 A CN114682581 A CN 114682581A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005406 washing Methods 0.000 title claims abstract description 13
- 239000002253 acid Substances 0.000 title claims description 194
- 238000011010 flushing procedure Methods 0.000 claims description 99
- 239000003595 mist Substances 0.000 claims description 75
- 238000000926 separation method Methods 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000007921 spray Substances 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 5
- 238000005201 scrubbing Methods 0.000 claims 1
- 239000012535 impurity Substances 0.000 description 16
- 238000011144 upstream manufacturing Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Chemical group 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003839 salts Chemical group 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0323—Arrangements specially designed for simultaneous and parallel cleaning of a plurality of conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
Abstract
The invention relates to the technical field of acid-gas cleaning, and particularly discloses an acid-gas cleaning device and an online washing method for preventing an acid-gas pipe from being blocked.
Description
Technical Field
The invention relates to the technical field of acid vapor cleaning, in particular to an acid vapor cleaning device and an online flushing method for preventing an acid vapor pipe from being blocked.
Background
Acid steam enters a vacuum pump, is separated through a separating tank, condensate is discharged to a vacuum condensate tank, and the acid steam is discharged from the separating tank of the vacuum pump, conveyed through a main acid steam passage or an auxiliary acid steam passage and enters a first-stage mist catcher. A mist catching layer is arranged in the first stage mist catcher. The acid vapor is purified by the mist catcher and then enters a second-stage mist catcher. Under the separation action of the second-stage mist catcher, a small amount of condensate is conveyed to a water seal through a liquid discharge pipe. And the acid gas is discharged from the mist catcher and finally sent to an incinerator for combustion.
However, the impurities carried by the acid gas include secondary salt, coal powder, washing oil and ammonium salt, which are easily accumulated in the pipeline in the conveying process, so that the pipeline is blocked, and the service cycle of the acid gas cleaning device is very short.
Disclosure of Invention
The invention aims to provide an acid gas cleaning device and an online washing method for preventing an acid gas pipe from being blocked so as to solve the problem of pipeline blockage.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, the present invention provides an acid gas cleaning apparatus, comprising:
the device comprises a main vacuum pump, a main separation tank, a main Y-shaped pipe, a main acid steam passage, an auxiliary acid steam passage, a first main Y-shaped cleaning pipe and a second main Y-shaped cleaning pipe;
an outlet of the main vacuum pump is communicated with an inlet of the main separation tank, a steam outlet of the main separation tank is communicated with an inlet of the main Y-shaped pipe, and a first outlet and a second outlet of the main Y-shaped pipe are respectively communicated with an inlet of the main acid steam passage and an inlet of the auxiliary acid steam passage;
a first main valve body and a second main valve body are respectively arranged at a first outlet and a second outlet of the main Y-shaped pipe; the outlet of the first main Y-shaped cleaning pipe is communicated between the first main valve body and the branch of the main Y-shaped pipe, and the outlet of the second main Y-shaped cleaning pipe is communicated between the second main valve body and the branch of the main Y-shaped pipe.
Preferably, the main acid steam passage comprises a first main acid steam pipe, a first section of main mist catcher, a second main acid steam pipe, a second section of main mist catcher and a third main acid steam pipe which are sequentially communicated, a first outlet of the main Y-shaped pipe is communicated with an inlet of the first main acid steam pipe, and the first main acid steam pipe inclines from top to bottom along the flowing direction of the steam inside the first main acid steam pipe; and/or
The auxiliary acid steam passage comprises a first auxiliary acid steam pipe, a first section of auxiliary mist catcher, a second auxiliary acid steam pipe, a second section of auxiliary mist catcher and a third auxiliary acid steam pipe which are sequentially communicated, a second outlet of the main Y-shaped pipe is communicated with an inlet of the first auxiliary acid steam pipe, and the first auxiliary acid steam pipe inclines from top to bottom along the flowing direction of steam inside the first auxiliary acid steam pipe.
Preferably, a liquid outlet of the main separation tank is communicated with an inlet of a vacuum condensate tank, an inlet of a vacuum condensate pump is communicated with an outlet of the vacuum condensate tank, and an outlet of the vacuum condensate pump is communicated with a spray head in the first section of main spray catcher through a main spray catcher cleaning pipe; the spray head is annular.
Preferably, the acid gas cleaning device further comprises a first main flushing pipe, an inlet of the first main flushing pipe is communicated with an outlet of the vacuum condensate pump, an outlet of the first main flushing pipe is communicated with an inlet of the first main acid gas pipe, and/or
The acid gas cleaning device further comprises a first auxiliary flushing pipe, an inlet of the first auxiliary flushing pipe is communicated with an outlet of the vacuum condensate pump, and an outlet of the first auxiliary flushing pipe is communicated with an inlet of the first auxiliary acid gas pipe.
Preferably, the second main acid steam pipe is inclined from top to bottom along the flow direction of the steam inside the second main acid steam pipe; and/or
The second auxiliary acid steam pipe inclines from top to bottom along the flowing direction of the steam inside the second auxiliary acid steam pipe.
Preferably, the acid vapor cleaning device further comprises a second main flushing pipe, an inlet of the second main flushing pipe is communicated with an outlet of the vacuum condensate pump, and an outlet of the second main flushing pipe is communicated with an inlet of the second main acid vapor pipe; and/or
The acid gas cleaning device further comprises a second auxiliary flushing pipe, an inlet of the second auxiliary flushing pipe is communicated with an outlet of the vacuum condensate pump, and an outlet of the second auxiliary flushing pipe is communicated with an inlet of the second auxiliary acid gas pipe.
Preferably, the third main acid steam pipe is inclined from top to bottom in the flow direction of the steam inside the third main acid steam pipe; and/or
The third auxiliary acid steam pipe inclines from top to bottom along the flowing direction of the steam inside the third auxiliary acid steam pipe.
Preferably, the acid vapor cleaning device further comprises a third main flushing pipe, an inlet of the third main flushing pipe is communicated with an outlet of the vacuum condensate pump, and an outlet of the third main flushing pipe is communicated with an inlet of the third main acid vapor pipe; and/or
The acid gas cleaning device further comprises a third auxiliary flushing pipe, an inlet of the third auxiliary flushing pipe is communicated with an outlet of the vacuum condensate pump, and an outlet of the third auxiliary flushing pipe is communicated with an inlet of the third auxiliary acid gas pipe.
Preferably, the acid gas cleaning device further comprises a first water seal, the liquid output ends of the first section of main mist catcher and the first section of auxiliary mist catcher are respectively communicated with the inlet of the first water seal, and the outlet of the first water seal is communicated with the inlet of the vacuum condensate tank.
In another aspect, the present invention provides an on-line rinsing method for preventing acid vapor pipe blockage, comprising the steps of:
s01, opening a main vacuum pump, enabling the acid gas to sequentially pass through a main separation tank and a main Y-shaped pipe under the action of the main vacuum pump, and enabling the acid gas to enter a main acid gas passage from a first outlet of the main Y-shaped pipe;
and S02, introducing a cleaning liquid through the second main Y-shaped cleaning pipe, wherein the cleaning liquid enters the main separation tank after passing through the branch of the main Y-shaped pipe.
The invention has the beneficial effects that:
the invention provides an acid gas cleaning device and an online washing method for preventing an acid gas pipe from being blocked, wherein the acid gas cleaning device can inject cleaning fluid into a main Y-shaped pipe through a first main Y-shaped cleaning pipe and a second main Y-shaped cleaning pipe in the acid gas cleaning process by a mode of communicating an outlet of the first main Y-shaped cleaning pipe with a branch of a first main valve body and a branch of a main Y-shaped pipe and a mode of communicating an outlet of the second main Y-shaped cleaning pipe with a branch of a second main valve body and a branch of a main Y-shaped pipe, so that impurities attached to the inner wall of the main Y-shaped pipe can be cleaned in real time, the impurities in the acid gas are prevented from being accumulated in the main Y-shaped pipe, the main Y-shaped pipe is prevented from being blocked, and the service cycle of the acid gas cleaning device is prolonged.
In addition, the arrangement of the structure can also clean the main separation tank communicated with the inlet of the main Y-shaped pipe, so that the service life of the main separation tank is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of an acid gas cleaning apparatus according to an embodiment of the present invention.
In the figure:
11. a main vacuum pump; 12. a main separation tank; 13. a main Y-shaped pipe; 14. a first main Y-shaped cleaning tube; 15. a second main Y-shaped cleaning tube;
21. an auxiliary vacuum pump; 22. an auxiliary separation tank; 23. auxiliary Y-shaped pipes; 24. a first auxiliary Y-shaped cleaning tube; 25. a second auxiliary Y-shaped cleaning tube;
3. a main acid vapor passage; 31. a first main acid vapor pipe; 32. a first stage main mist catcher; 33. a second main acid vapor pipe; 34. a second section of the main mist catcher; 35. a third main acid vapor pipe;
4. an acid gas auxiliary passage; 41. a first auxiliary acid steam pipe; 42. a first section of auxiliary mist catcher; 43. a second auxiliary acid steam pipe; 44. a second section of auxiliary mist catcher; 45. a third auxiliary acid steam pipe;
51. a vacuum condensate tank; 52. a vacuum condensate pump; 53. a vacuum condensate flushing pipe;
6. a spray head;
71. a first water seal; 72. a second water seal; 73. a desulphurizing underground tank;
101. a first main wash pipe; 102. a second main flushing pipe; 103. a third main wash pipe; 104. cleaning a pipe by using a main mist catcher;
201. a first auxiliary flushing pipe; 202. a second auxiliary flushing pipe; 203. a third auxiliary flushing pipe; 204. auxiliary cleaning pipe of mist catcher;
301. a first backup flush line; 302. a second backup flush line;
401. a first drain pipe; 402. a second drain pipe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Example one
As shown in fig. 1, the present embodiment provides an acid gas cleaning apparatus, which includes a main vacuum pump 11, a main separation tank 12, a main Y-shaped pipe 13, a main acid gas passage 3, an auxiliary acid gas passage 4, a first main Y-shaped cleaning pipe 14, and a second main Y-shaped cleaning pipe 15. Wherein, the outlet of the main vacuum pump 11 is communicated with the inlet of the main separation tank 12, the steam outlet of the main separation tank 12 is communicated with the inlet of the main Y-shaped pipe 13, and the first outlet and the second outlet of the main Y-shaped pipe 13 are respectively communicated with the inlet of the main acid steam passage 3 and the inlet of the auxiliary acid steam passage 4; a first main valve body and a second main valve body are respectively arranged at a first outlet and a second outlet of the main Y-shaped pipe 13; the outlet of the first main Y-shaped cleaning pipe 14 is communicated between the first main valve body and the branch of the main Y-shaped pipe 13 and is close to the position of the first main valve body, and the outlet of the second main Y-shaped cleaning pipe 15 is communicated between the second main valve body and the branch of the main Y-shaped pipe 13 and is close to the position of the second main valve body. The main vacuum pump 11 and the main separation tank 12 are of an integral structure and are divided into two parts for convenience of description.
In this embodiment, in the acid gas cleaning apparatus, by communicating the outlet of the first main Y-shaped cleaning pipe 14 with the branch between the first main valve body and the main Y-shaped pipe 13 and communicating the outlet of the second main Y-shaped cleaning pipe 15 with the branch between the second main valve body and the main Y-shaped pipe 13, during the acid gas cleaning process, a cleaning solution may be injected into the main Y-shaped pipe 13 through the first main Y-shaped cleaning pipe 14 and/or the second main Y-shaped cleaning pipe 15, so that impurities attached to the inner wall of the main Y-shaped pipe 13 may be cleaned in real time, and the impurities in the acid gas may be prevented from accumulating in the main Y-shaped pipe 13, thereby preventing the main Y-shaped pipe 13 from being blocked and prolonging the service life of the acid gas cleaning apparatus.
In addition, the arrangement of the structure can also clean the main separation tank 12 communicated with the inlet of the main Y-shaped pipe 13, and the service life of the main separation tank 12 is prolonged.
Regarding the structure of the acid gas passage, in the present embodiment, specifically, the main acid gas passage 3 includes a first main acid gas pipe 31, a first-stage main mist catcher 32, a second main acid gas pipe 33, a second-stage main mist catcher 34, and a third main acid gas pipe 35 which are sequentially communicated, a first outlet of the main Y-shaped pipe 13 is communicated with an inlet of the first main acid gas pipe 31, and the first main acid gas pipe 31 is inclined downward from the top along the internal gas flow direction thereof. By means of the arrangement of the structure, the condensate of the acid gas in the transmission process can move to the first-stage main mist catcher 32 under the action of gravity, and the phenomenon that impurities in the condensate cause pollution to the upstream main Y-shaped pipe 13 and the upstream main separation tank 12 due to backflow is avoided.
Regarding the structure of the auxiliary acid gas passage 4, in the present embodiment, specifically, the auxiliary acid gas passage 4 includes a first auxiliary acid gas pipe 41, a first-stage auxiliary mist trap 42, a second auxiliary acid gas pipe 43, a second-stage auxiliary mist trap 44, and a third auxiliary acid gas pipe 45 which are sequentially communicated, a second outlet of the main Y-shaped pipe 13 is communicated with an inlet of the first auxiliary acid gas pipe 41, and the first auxiliary acid gas pipe 41 is inclined downward from the top in the internal gas flow direction thereof. By means of the arrangement of the structure, the condensate in the conveying process can move to the first-stage auxiliary mist catcher 42 under the action of gravity, and the phenomenon that impurities in the condensate flow back to pollute the upstream main Y-shaped pipe 13 and the upstream main separation tank 12 is avoided.
The outlets of the third main acid gas pipe 35 and the third auxiliary acid gas pipe 45 are respectively communicated with an output pipeline which is communicated to the incinerator.
Optionally, the vapor outlet of the main separation tank 12 is communicated with the inlet of the main Y-shaped pipe 13, the liquid outlet of the main separation tank 12 is communicated with the inlet of the vacuum condensate tank 51, the inlet of the vacuum condensate pump 52 is communicated with the outlet of the vacuum condensate tank 51, and the outlet of the vacuum condensate pump 52 is communicated with the spray head 6 in the first-stage main mist catcher 32 through the main mist catcher cleaning pipe 104; the shower head 6 is annular. The annular spray head 6 can clean the mist trap layer in the first stage main mist trap 32 completely and effectively. Specifically, the inlet of the main mist trap cleaning pipe 104 communicates with the vacuum condensate flushing pipe 53, and the first main flushing pipe 101 is provided with a first main mist trap valve body. The outlet of the vacuum condensate pump 52 is also in communication with the rich liquor tank.
The outlet of the vacuum condensate pump 52 is communicated with the spray head 6 in the first-stage auxiliary spray catcher 42 through an auxiliary spray catcher cleaning pipe 204; the spray head 6 in the first-stage auxiliary mist catcher 42 is annular. Specifically, the inlet of the auxiliary mist catcher cleaning pipe 204 is communicated with the vacuum condensate flushing pipe 53, the vacuum condensate flushing pipe 53 is communicated with the vacuum condensate pump 52, and the auxiliary mist catcher cleaning pipe 204 is provided with a first auxiliary mist catcher valve body.
Optionally, the acid vapor cleaning device further comprises a first main flushing pipe 101, an inlet of the first main flushing pipe 101 is communicated with an outlet of the vacuum condensate pump 52, an outlet of the first main flushing pipe 101 is communicated with an inlet of the first main acid vapor pipe 31, specifically, an inlet of the first main flushing pipe 101 is communicated with the vacuum condensate flushing pipe 53, and the first main flushing pipe 101 is provided with a first main valve body. The acid gas cleaning device further comprises a first auxiliary flushing pipe 201, wherein an inlet of the first auxiliary flushing pipe 201 is communicated with an outlet of the vacuum condensate pump 52, and an outlet of the first auxiliary flushing pipe 201 is communicated with an inlet of the first auxiliary acid gas pipe 41. Specifically, the inlet of the first auxiliary flushing pipe 201 communicates with the vacuum condensate flushing pipe 53, and the first auxiliary flushing pipe 201 is provided with a first auxiliary valve body. The above arrangement enables the first main acid steam pipe 31 and the first subsidiary acid steam pipe 41 to be flushed.
Further, the second main sour steam pipe 33 is inclined from the top to the bottom in the direction of the flow of the internal gas thereof. With the arrangement of the structure, condensate in the conveying process can move to the second-stage main mist catcher 34 under the action of gravity, and the backflow is avoided, so that the internal impurities can be prevented from polluting the upstream first-stage main mist catcher 32. The second auxiliary acid vapor pipe 43 is inclined from the top to the bottom in the direction of the vapor flow inside thereof. With the arrangement of the structure, condensate in the conveying process can move to the second-stage auxiliary mist catcher 44 under the action of gravity, and the backflow is avoided, so that the internal impurities can be prevented from polluting the upstream first-stage auxiliary mist catcher 42.
Still further, the acid vapor cleaning device further comprises a second main flushing pipe 102, an inlet of the second main flushing pipe 102 is communicated with an outlet of the vacuum condensate pump 52, and an outlet of the second main flushing pipe 102 is communicated with an inlet of the second main acid vapor pipe 33. Specifically, the inlet of the second main flushing pipe 102 communicates with the vacuum condensate flushing pipe 53, and the second main flushing pipe 102 is provided with a second main valve body. The acid gas cleaning device also comprises a second auxiliary flushing pipe 202, wherein the inlet of the second auxiliary flushing pipe 202 is communicated with the outlet of the vacuum condensate pump 52, and the outlet of the second auxiliary flushing pipe 202 is communicated with the inlet of the second auxiliary acid gas pipe 43. Specifically, the inlet of the second auxiliary flushing pipe 202 communicates with the vacuum condensate flushing pipe 53, and the second auxiliary flushing pipe 202 is provided with a second auxiliary valve body. The above arrangement enables flushing of the second main sour steam pipe 33 and the second subsidiary sour steam pipe 43.
Further, the third main sour steam pipe 35 is inclined from top to bottom in the direction of internal steam flow. By means of the arrangement of the structure, condensate in the conveying process can move downstream under the action of gravity, and the backflow is avoided, so that the impurities in the condensate can not pollute the upstream second-stage main mist catcher 34. The third auxiliary acid vapor pipe 45 is inclined from the top to the bottom in the direction of the vapor flow inside thereof. By means of the arrangement of the structure, condensate in the transmission process can move downstream under the action of gravity, and the backflow is avoided, so that the impurities in the condensate can be prevented from polluting the upstream second-stage auxiliary mist catcher 44.
Finally, the acid vapor cleaning device further comprises a third main flushing pipe 103, wherein the inlet of the third main flushing pipe 103 is communicated with the outlet of the vacuum condensate pump 52, and the outlet of the third main flushing pipe 103 is communicated with the inlet of the third main acid vapor pipe 35. In particular, the inlet of the third main flushing pipe 103 communicates with the vacuum condensate flushing pipe 53, and the third main flushing pipe 103 is provided with a third main valve body. The acid gas cleaning device also comprises a third auxiliary flushing pipe 203, the inlet of the third auxiliary flushing pipe 203 is communicated with the outlet of the vacuum condensate pump 52, and the outlet of the third auxiliary flushing pipe 203 is communicated with the inlet of the third auxiliary acid gas pipe 45. Specifically, the inlet of the third auxiliary flushing pipe 203 communicates with the vacuum condensate flushing pipe 53, and the third auxiliary flushing pipe 203 is provided with a third auxiliary valve body. The above arrangement enables the third main acid steam pipe 35 and the third auxiliary acid steam pipe 45 to be flushed.
Optionally, the acid gas cleaning device further comprises a first water seal 71, the first water seal 71 is preferably a U-shaped water seal, liquid output ends of the first section main mist catcher 32 and the first section auxiliary mist catcher 42 are respectively communicated with an inlet of the U-shaped water seal, and an outlet of the U-shaped water seal is communicated with an inlet of the vacuum condensate tank 51. The arrangement of the U-shaped water seal can filter the liquid flowing into the vacuum condensate tank 51 and retain impurities in the U-shaped water seal. Optionally, the lower end of the U-shaped water seal is communicated with a drain pipe, the drain pipe is provided with a drain valve body, and the drain pipe is used for discharging impurities in the U-shaped water seal. Wherein, the entry and the exit of U type water seal are equallyd divide and are equipped with entry valve body and export valve body respectively, close the back with entry valve body and export valve body, blow in steam or let in the production water through the blow off pipe to U type water seal and wash the washing that all can accomplish U type water seal.
The liquid output ends of the first-stage main spray catcher 32 and the first-stage auxiliary spray catcher 42 are also respectively communicated with the inlet of a first liquid discharge pipe 401, and the outlet of the first liquid discharge pipe 401 is communicated to the desulfuration underground groove 73. The first drain pipe 401 is provided with a first drain valve body.
Optionally, the acid gas cleaning device further comprises an auxiliary vacuum pump 21, an auxiliary separation tank 22 and an auxiliary Y-shaped pipe 23, wherein the auxiliary vacuum pump 21 and the auxiliary separation tank 22 are of an integrated structure. Wherein, the outlet of the auxiliary vacuum pump 21 is communicated with the inlet of the auxiliary separating tank 22, and the steam outlet of the auxiliary separating tank 22 is communicated with the inlet of the auxiliary Y-shaped pipe 23; a first outlet and a second outlet of the auxiliary Y-shaped pipe 23 are respectively communicated with the main acid steam passage 3 and the auxiliary acid steam passage 4, and the first outlet of the auxiliary Y-shaped pipe 23 is positioned between the first outlet of the main Y-shaped pipe 13 and the first section of the main mist catcher 32; and the second outlet of the auxiliary Y-pipe 23 is located between the second outlet of the main Y-pipe 13 and the first stage auxiliary mist trap 42. The arrangement provides a backup for the main vacuum pump 11 and the main separation tank 12, and improves the risk resistance of the acid gas cleaning device.
Optionally, the liquid outlet of the auxiliary separation tank 22 communicates with the inlet of the vacuum condensate tank 51.
Further, the acid gas cleaning device also comprises a first standby flushing pipeline 301 and a second standby flushing pipeline 302; the inlet of the first spare flushing pipeline 301 is communicated with the vacuum condensate flushing pipe 53, the outlet of the first spare flushing pipeline 301 is communicated with the first main acid-steam pipe 31, the outlet of the first spare flushing pipeline 301 is located on one side, close to the first section of main mist catcher 32, of the first outlet of the auxiliary Y-shaped pipe 23, and the first spare flushing pipeline 301 is provided with a first spare valve body. The inlet of the second spare flushing pipeline 302 is communicated with the vacuum condensate flushing pipe 53, the outlet of the second spare flushing pipeline 302 is communicated with the first auxiliary acid vapor pipe 41, the outlet of the second spare flushing pipeline 302 is positioned at one side, close to the first section of auxiliary mist catcher 42, of the second outlet of the auxiliary Y-shaped pipe 23, and the second spare flushing pipeline 302 is provided with a second spare valve body. This arrangement allows the first alternate flushing line 301 to flush only the portion of the first main acid vapor pipe 31 through which acid vapor flows and the second alternate flushing line 302 to flush only the portion of the first auxiliary acid vapor pipe 41 through which acid vapor flows when the auxiliary vacuum pump 21 is used.
Optionally, the acid gas cleaning device further comprises a first auxiliary Y-shaped cleaning pipe 24 and a second auxiliary Y-shaped cleaning pipe 25; a first auxiliary valve body and a second auxiliary valve body are respectively arranged at the first outlet and the second outlet of the auxiliary Y-shaped pipe 23; the outlet of the first auxiliary Y-shaped cleaning pipe 24 is communicated between the first auxiliary valve body and the branch of the auxiliary Y-shaped pipe 23, and the outlet of the second auxiliary Y-shaped cleaning pipe 25 is communicated between the second auxiliary valve body and the branch of the auxiliary Y-shaped pipe 23.
Alternatively, the liquid output ends of the second-stage main mist catcher 34 and the second-stage auxiliary mist catcher 44 are respectively communicated with the inlet of a second water seal 72, and the outlet of the second water seal 72 is communicated to the desulfurized underground groove 73. The outlets of the third main sour steam pipe 35 and the third main sour steam pipe 35 are respectively communicated to the desulfurized underground tank 73 through a second liquid discharge pipe 402. A second drain valve body is provided on the second drain pipe 402.
Example two
The embodiment also provides an online flushing method for preventing the blockage of the sour steam pipe, wherein the main sour steam passage 3 and the auxiliary sour steam passage 4 are used and prepared, and the following description is given by taking the main sour steam passage 3 and the main vacuum pump 11 as an example, and the online flushing method for preventing the blockage of the sour steam pipe comprises the following steps:
s01, opening the main vacuum pump 11, and allowing the acid vapor to sequentially pass through the main separation tank 12 and the main Y-shaped pipe 13 under the action of the main vacuum pump 11 and enter the main acid vapor passage 3 from the first outlet of the main Y-shaped pipe 13.
S02, introducing a cleaning liquid, preferably soft water, through the second main Y-shaped cleaning pipe 15. And continuously washing, wherein the cleaning solution enters the main separation tank 12 after passing through the branch of the main Y-shaped pipe 13. The method prevents the accumulation of impurities at the intersection of the main Y-shaped pipe 13. Preferably, step S02 and step S01 may be performed synchronously. Optionally, the flow rate of the cleaning solution is controlled in the range of 0.5 to 1.0 cubic meter per hour.
Of course, in another embodiment, the first main Y-shaped cleaning pipe 14 may be opened at the same time, and the cleaning liquid may be introduced through the first main Y-shaped cleaning pipe 14, and enter the main separation tank 12 after passing through the branch of the main Y-shaped pipe 13.
The first main valve body is opened for continuous flushing, and the cleaning solution flows into the first-stage main mist catcher 32 through the first main acid steam pipe 31, flows through the U-shaped water seal from the bottom of the first-stage main mist catcher 32 and returns to the vacuum condensate tank 51. The first main acid vapor pipe 31 is prevented from being blocked. Optionally, the flow rate of the cleaning liquid is controlled at 0.8 cubic meter per hour.
And opening the valve body of the first main mist catcher, continuously flushing, spraying cleaning liquid into the first-stage main mist catcher 32 through the annular spray head 6, fully flushing the mist catching layer, flowing through the U-shaped water seal from the bottom of the first-stage main mist catcher 32, and returning to the vacuum condensate tank 51. Prevent the mist catching layer from being blocked. Optionally, the flow rate of the cleaning solution is controlled in the range of 1.5 to 1.8 cubic meters per hour.
And opening the second main valve body, flushing the gap, flowing cleaning liquid into the second-stage main mist catcher 34 through the second main sour steam pipe 33, flowing from the bottom of the second-stage main mist catcher 34 through the second water seal 72, and finally entering the underground desulfurization tank 73. The second main sour steam pipe 33 is prevented from being clogged. Optionally, each flush time is 30 seconds, 1 flush every 2-3 hours. Wherein the flow rate of the cleaning liquid is controlled at 0.8 cubic meter per hour.
The third main valve body is opened, the gap is flushed, and the cleaning solution flows to the downstream underground desulfurization tank 73 through the third main sour steam pipe 35. Preventing the third main acid vapor pipe 35 from being clogged. Optionally, each flush time is 15 seconds, 1 flush every 2-3 hours. Wherein the flow rate of the cleaning liquid is controlled at 0.8 cubic meter per hour.
In the following description, taking the main sour steam passage 3 and the auxiliary vacuum pump 21 as examples, the online flushing method for preventing the sour steam pipe from being blocked comprises the following steps:
s01, opening the auxiliary vacuum pump 21, and allowing the acid vapor to sequentially pass through the auxiliary separation tank 22 and the auxiliary Y-shaped pipe 23 under the action of the auxiliary vacuum pump 21 and enter the main acid vapor passage 3 from the first outlet of the auxiliary Y-shaped pipe 23.
And S02, introducing cleaning liquid through the second auxiliary Y-shaped cleaning pipe 25, continuously cleaning, and allowing the cleaning liquid to enter the auxiliary separation tank 22 after passing through the branch of the auxiliary Y-shaped pipe 23. This arrangement prevents the accumulation of impurities at the intersection of the auxiliary Y-tubes 23. Preferably, step S02 and step S01 may be performed synchronously. Optionally, the flow rate of the cleaning solution is controlled in the range of 0.5 to 1.0 cubic meter per hour.
Of course, in another embodiment, the first auxiliary Y-shaped cleaning pipe 24 may be opened at the same time, and the cleaning liquid is introduced through the first auxiliary Y-shaped cleaning pipe 24, and enters the auxiliary separation tank 22 after passing through the branch of the auxiliary Y-shaped pipe 23.
And opening the first main valve body, continuously washing, and finally allowing the cleaning solution to enter the auxiliary separation tank 22 through the first main acid steam pipe 31 and the first outlet of the auxiliary Y-shaped pipe 23 to ensure that the first main acid steam pipe 31 between the main vacuum pump 11 and the auxiliary vacuum pump 21 is not blocked. Optionally, the flow rate of the cleaning liquid is controlled at 0.2 cubic meter per hour. And opening the first standby valve body, wherein the cleaning solution flows into the first-stage main mist catcher 32 through the first main acid steam pipe 31, flows through the U-shaped water seal from the bottom of the first-stage main mist catcher 32 and returns to the vacuum condensate tank 51. The other part of the first main acid vapor pipe 31 is prevented from being blocked.
And opening the valve body of the first main mist catcher, continuously flushing, spraying cleaning liquid into the first-stage main mist catcher 32 through the annular spray head 6, fully flushing the mist catching layer, flowing through the U-shaped water seal from the bottom of the first-stage main mist catcher 32, and returning to the vacuum condensate tank 51. Prevent the mist catching layer from being blocked. Optionally, the flow rate of the cleaning solution is controlled in the range of 1.5 to 1.8 cubic meters per hour.
And opening the second main valve body, flushing the gap, flowing cleaning liquid into the second-stage main mist catcher 34 through the second main sour steam pipe 33, flowing from the bottom of the second-stage main mist catcher 34 through the second water seal 72, and finally entering the underground desulfurization tank 73. The second main sour steam pipe 33 is prevented from being clogged. Optionally, each flush time is 30 seconds, 1 flush every 2-3 hours. Wherein the flow rate of the cleaning liquid is controlled at 0.8 cubic meter per hour.
The third main valve body is opened, the gap is flushed, and the cleaning solution flows to the downstream underground desulfurization tank 73 through the third main sour steam pipe 35. Preventing the third main acid vapor pipe 35 from being clogged. Optionally, each flush time is 15 seconds, 1 flush every 2-3 hours. Wherein the flow rate of the cleaning liquid is controlled at 0.8 cubic meter per hour.
The method for washing the large amount of acid gas in the clearance washing mode with multiple frequency and short time can ensure the washing of impurities in the pipeline and does not influence the normal conveying of the acid gas.
When the auxiliary acid vapor passage 4 is used, the flushing method is similar, and therefore, the description is omitted.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An acid gas cleaning device, comprising:
the device comprises a main vacuum pump (11), a main separation tank (12), a main Y-shaped pipe (13), a main acid steam passage (3), an auxiliary acid steam passage (4), a first main Y-shaped cleaning pipe (14) and a second main Y-shaped cleaning pipe (15);
an outlet of the main vacuum pump (11) is communicated with an inlet of the main separation tank (12), a vapor outlet of the main separation tank (12) is communicated with an inlet of the main Y-shaped pipe (13), and a first outlet and a second outlet of the main Y-shaped pipe (13) are respectively communicated with an inlet of the main acid vapor passage (3) and an inlet of the auxiliary acid vapor passage (4);
a first main valve body and a second main valve body are respectively arranged at a first outlet and a second outlet of the main Y-shaped pipe (13); the outlet of the first main Y-shaped cleaning pipe (14) is communicated between the first main valve body and the branch of the main Y-shaped pipe (13), and the outlet of the second main Y-shaped cleaning pipe (15) is communicated between the second main valve body and the branch of the main Y-shaped pipe (13).
2. The acid gas cleaning device according to claim 1, wherein the main acid gas passage (3) comprises a first main acid gas pipe (31), a first section main mist catcher (32), a second main acid gas pipe (33), a second section main mist catcher (34) and a third main acid gas pipe (35) which are communicated in sequence, a first outlet of the main Y-shaped pipe (13) is communicated with an inlet of the first main acid gas pipe (31), and the first main acid gas pipe (31) is inclined downwards from top to bottom along the flow direction of the inner gas of the first main acid gas pipe; and/or
The auxiliary acid steam passage (4) comprises a first auxiliary acid steam pipe (41), a first section of auxiliary mist catcher (42), a second auxiliary acid steam pipe (43), a second section of auxiliary mist catcher (44) and a third auxiliary acid steam pipe (45) which are sequentially communicated, a second outlet of the main Y-shaped pipe (13) is communicated with an inlet of the first auxiliary acid steam pipe (41), and the first auxiliary acid steam pipe (41) inclines from top to bottom along the flowing direction of the steam inside the first auxiliary acid steam pipe.
3. The acid gas cleaning device according to claim 2, wherein the liquid outlet of the main separation tank (12) is communicated with the inlet of a vacuum condensate tank (51), the inlet of a vacuum condensate pump (52) is communicated with the outlet of the vacuum condensate tank (51), and the outlet of the vacuum condensate pump (52) is communicated with the spray head (6) in the first stage main mist catcher (32) through a main mist catcher cleaning pipe (104); the spray head (6) is annular.
4. An acid vapour cleaning device according to claim 3, further comprising a first main wash pipe (101), an inlet of the first main wash pipe (101) being in communication with an outlet of the vacuum condensate pump (52), an outlet of the first main wash pipe (101) being in communication with an inlet of the first main acid vapour pipe (31), and/or
The acid vapor cleaning device further comprises a first auxiliary flushing pipe (201), an inlet of the first auxiliary flushing pipe (201) is communicated with an outlet of the vacuum condensate pump (52), and an outlet of the first auxiliary flushing pipe (201) is communicated with an inlet of the first auxiliary acid vapor pipe (41).
5. An acid gas cleaning apparatus according to claim 3, characterized in that said second main acid gas pipe (33) is inclined from top to bottom in the direction of the gas flow inside thereof; and/or
The second auxiliary acid steam pipe (43) is inclined from top to bottom along the flow direction of the steam inside the second auxiliary acid steam pipe.
6. The acid vapor cleaning device according to claim 5, further comprising a second main wash pipe (102), an inlet of the second main wash pipe (102) being in communication with an outlet of the vacuum condensate pump (52), an outlet of the second main wash pipe (102) being in communication with an inlet of the second main acid vapor pipe (33); and/or
The acid vapor cleaning device further comprises a second auxiliary flushing pipe (202), wherein an inlet of the second auxiliary flushing pipe (202) is communicated with an outlet of the vacuum condensate pump (52), and an outlet of the second auxiliary flushing pipe (202) is communicated with an inlet of the second auxiliary acid vapor pipe (43).
7. An acid gas scrubbing apparatus according to claim 3, wherein said third main acid gas pipe (35) is inclined downwardly from above in the direction of flow of gas therein; and/or
The third auxiliary acid steam pipe (45) inclines from top to bottom along the flowing direction of the steam inside the third auxiliary acid steam pipe.
8. The acid vapor cleaning device according to claim 7, further comprising a third main wash pipe (103), wherein an inlet of the third main wash pipe (103) is communicated with an outlet of the vacuum condensate pump (52), and an outlet of the third main wash pipe (103) is communicated with an inlet of the third main acid vapor pipe (35); and/or
The acid vapor cleaning device further comprises a third auxiliary flushing pipe (203), wherein an inlet of the third auxiliary flushing pipe (203) is communicated with an outlet of the vacuum condensate pump (52), and an outlet of the third auxiliary flushing pipe (203) is communicated with an inlet of the third auxiliary acid vapor pipe (45).
9. The acid gas cleaning device according to claim 3, characterized in that the acid gas cleaning device further comprises a first water seal (71), the liquid output ends of the first section main mist catcher (32) and the first section auxiliary mist catcher (42) are respectively communicated with the inlet of the first water seal (71), and the outlet of the first water seal (71) is communicated with the inlet of the vacuum condensate tank (51).
10. An online washing method for preventing acid steam pipe blockage is characterized by comprising the following steps:
s01, opening the main vacuum pump (11), allowing the acid vapor to sequentially pass through the main separation tank (12) and the main Y-shaped pipe (13) under the action of the main vacuum pump (11), and allowing the acid vapor to enter the main acid vapor passage (3) from a first outlet of the main Y-shaped pipe (13);
and S02, introducing a cleaning liquid through a second main Y-shaped cleaning pipe (15), wherein the cleaning liquid enters the main separation tank (12) after passing through the branch of the main Y-shaped pipe (13).
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| CN202210319816.5A CN114682581A (en) | 2022-03-29 | 2022-03-29 | Acid gas cleaning device and online washing method for preventing acid gas pipe from being blocked |
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| CN202210319816.5A CN114682581A (en) | 2022-03-29 | 2022-03-29 | Acid gas cleaning device and online washing method for preventing acid gas pipe from being blocked |
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