CN114891541B - Coke oven gas final cooler resistance cleaning system and use method - Google Patents
Coke oven gas final cooler resistance cleaning system and use method Download PDFInfo
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- CN114891541B CN114891541B CN202210594585.9A CN202210594585A CN114891541B CN 114891541 B CN114891541 B CN 114891541B CN 202210594585 A CN202210594585 A CN 202210594585A CN 114891541 B CN114891541 B CN 114891541B
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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
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The invention discloses a resistance cleaning system of a coke oven gas final cooler and a using method thereof, belonging to the technical field of final cooler cleaning, wherein the resistance cleaning system of the coke oven gas final cooler comprises a lean oil pipeline, a residual ammonia water pipeline, a spray liquid circulating pipeline, a vent liquid pipeline, a liquid discharge pipeline, a final cooler and a circulating pump unit, the final cooler comprises a final cooler A and a final cooler B, the spray liquid circulating pipeline comprises a spray liquid inlet pipeline, a spray liquid outlet pipeline and a spray liquid inlet pump pipeline, the lean oil pipeline and the residual ammonia water pipeline are respectively connected with the upper parts of the final cooler A and the final cooler B, the bottoms of the final cooler A and the final cooler B are connected with the vent liquid pipeline, and the vent liquid pipeline and the liquid discharge pipeline are connected through the circulating pump unit.
Description
Technical Field
The invention relates to the technical field of final coolers, in particular to a resistance cleaning system of a coke oven gas final cooler and a using method thereof.
Background
In the coke oven gas final cooling benzene washing process, a final cooler is used as important equipment for gas final cooling, naphthalene and the like are easy to enrich in the production process, equipment resistance is increased, the final cooler is usually used, the final cooler and gas final cooling are generally carried out simultaneously in the normal switching process of the final cooler, residual ammonia water is generally required to be used for cleaning in the process of cleaning the final cooler, and the resistance of the final cooler is reduced.
CN108441268a discloses a method of a coke oven gas treatment system, the treatment system comprises a previous process, a benzene washing tower, a rich oil pump, a final cooler, a spray liquid circulating pump and a subsequent process, wherein the previous process comprises a cooling unit, a desulfurization unit and a deamination unit, raw coke oven gas generated by the crude benzene distillation unit and the coke oven is sequentially connected with the cooling unit, the desulfurization unit and the deamination unit through pipelines and then enters the final cooler to carry out final cooling of the coke oven gas, then enters the benzene washing tower, clean gas generated by the benzene washing tower is subjected to gas removal by a clean gas pipeline, in the final cooling process of the gas, the gas is cooled by circulating water and low temperature water, condensate in the gas flows into the condensate tank to be circularly sprayed by the spray liquid circulating pump, the gas enters the benzene washing tower after final cooling, and is in countercurrent contact with lean oil entering the benzene washing tower, and the generated rich oil is pumped to the crude benzene distillation unit through the pipelines.
The residual ammonia water temperature is too high, and the residual ammonia water cannot be directly mixed into the condensate tank in the cleaning process, so that normal production can be influenced if the residual ammonia water is mixed into the condensate tank, and the residual ammonia water enters the final cooler after being cooled, so that no good effect is achieved. After the discharged residual ammonia water and condensate sprayed in normal production are mixed in the process of cleaning the final cooler, the temperature is increased, so that the gas final cooling effect is affected. The temperature of the residual ammonia water after mixing is reduced, and as the ammonia water contains naphthalene, the temperature reduction can lead to the naphthalene to be enriched in a condensate tank or a pipeline again, so that the condensate tank or the pipeline is blocked, and the gas final cooling is affected. The method does not affect the normal final cooling of the coal gas, but the independent arrangement of the condensate tank and the pump can increase investment and occupy larger occupied area. And the problem of blockage of condensate tanks and pipelines caused by naphthalene enrichment also exists.
Disclosure of Invention
The invention aims to solve the problems in the background technology, and provides a coke oven gas final cooler resistance cleaning system and a using method thereof, the system can clean the switched final cooler to reduce the resistance of the final cooler under the condition of normal final cooling of the gas, the same effect can be achieved without singly arranging a condensate tank and a pump, the investment cost is reduced, and the problem of blockage of the condensate tank and the pipeline is avoided.
The coke oven gas final cooler resistance cleaning system comprises a lean oil pipeline, a residual ammonia water pipeline, a spray liquid circulating pipeline, a vent liquid pipeline, a liquid discharge pipeline, a final cooler and a circulating pump unit, wherein the final cooler comprises a final cooler A and a final cooler B, the spray liquid circulating pipeline comprises a spray liquid inlet pipeline, a spray liquid outlet pipeline and a spray liquid pump inlet pipeline, the spray liquid inlet pipeline is respectively connected with the upper parts of the final cooler A and the final cooler B, one end of the spray liquid outlet pipeline is respectively connected with the lower parts of the final cooler A and the final cooler B, the other end of the spray liquid outlet pipeline is connected with a condensate tank, one end of the spray liquid pump pipeline is connected with the condensate tank, the other end of the spray liquid pump pipeline is connected with the spray liquid inlet pipeline through the circulating pump unit, the lean oil pipeline and the residual ammonia water pipeline are respectively connected with the upper parts of the final cooler A and the final cooler B, the bottom of the final cooler A and the residual ammonia water pipeline are respectively connected with the vent liquid pipeline and the vent liquid tank through the vent liquid circulating pump unit.
Further, a lean oil inlet valve A is arranged between the lean oil pipeline and the upper part of the final cooler A, and a lean oil inlet valve B is arranged between the lean oil pipeline and the upper part of the final cooler B.
Further, a residual ammonia water inlet valve A is arranged between the residual ammonia water pipeline and the upper part of the final cooler A, and a residual ammonia water inlet valve B is arranged between the residual ammonia water pipeline and the upper part of the final cooler B.
Further, a spray liquid inlet valve A is arranged between the spray liquid inlet pipeline and the upper part of the final cooler A, and a spray liquid inlet valve B is arranged between the spray liquid inlet pipeline and the upper part of the final cooler B; a spray liquid outlet valve A is arranged between the spray liquid outlet pipeline and the lower part of the final cooler A, and a spray liquid outlet valve B is arranged between the spray liquid outlet pipeline and the lower part of the final cooler B.
Further, the circulating pump unit comprises a spraying liquid circulating pump A and a spraying liquid circulating pump B.
Further, the spraying liquid inlet pump pipeline is connected with the spraying liquid circulating pump A and the spraying liquid circulating pump B respectively, a pump A inlet valve II is arranged between the spraying liquid inlet pump pipeline and the spraying liquid circulating pump A, and a pump B inlet valve II is arranged between the spraying liquid inlet pump pipeline and the spraying liquid circulating pump B.
Further, a first pump A outlet valve is arranged between the spray liquid circulating pump A and the spray liquid inlet pipeline, and a first pump B outlet valve is arranged between the spray liquid circulating pump B and the spray liquid inlet pipeline.
Further, an emptying port valve A is arranged between the final cooler A and the emptying liquid pipeline, and an emptying port valve B is arranged between the final cooler B and the emptying liquid pipeline.
Further, a pump A inlet valve I is arranged between the emptying liquid pipeline and the spraying liquid circulating pump A, and a pump B inlet valve I is arranged between the emptying liquid pipeline and the spraying liquid circulating pump B.
Further, a second pump A outlet valve is arranged between the spray liquid circulating pump A and the liquid discharge pipeline, and a second pump B outlet valve is arranged between the spray liquid circulating pump B and the liquid discharge pipeline.
The application method of the coke oven gas final cooler resistance cleaning system comprises the following steps:
(1) When the final cooler A and the final cooler B are produced normally, spraying condensate to the final cooler A and the final cooler B through a spraying liquid circulating pump A and a spraying liquid circulating pump B respectively; when spraying the final cooler A, opening an outlet valve I of the pump A, closing an outlet valve II of the pump A, and pumping condensate from a spray liquid circulating pump A to a spray liquid inlet pipeline; opening a spraying liquid inlet valve A, closing a lean oil inlet valve A and a residual ammonia water inlet valve A, enabling condensate sent by a spraying liquid inlet pipeline to enter a final cooler A for spraying through the spraying liquid inlet valve A, opening a spraying liquid outlet valve A, closing an emptying port valve A, and enabling sprayed condensate to enter a condensate tank through the spraying liquid outlet valve A; opening a second inlet valve of the pump A, closing a first inlet valve of the pump A, and enabling condensate entering the condensate tank to enter a spraying liquid circulating pump A through a spraying liquid inlet pump pipeline and the second inlet valve of the pump A for circulating spraying; when spraying the final cooler B, opening an outlet valve I of the pump B, closing an outlet valve II of the pump B, and pumping condensate from a spraying liquid circulating pump B to a spraying liquid inlet pipeline; opening a spraying liquid inlet valve B, closing a lean oil inlet valve B and a residual ammonia water inlet valve B, enabling condensate sent by a spraying liquid inlet pipeline to enter a final cooler B for spraying through the spraying liquid inlet valve B, opening a spraying liquid outlet valve B, closing a vent valve B, and enabling sprayed condensate to enter a condensate tank through the spraying liquid outlet valve B; opening an inlet valve II of the pump B, closing an inlet valve I of the pump B, and enabling condensate entering the condensate tank to enter a spraying liquid circulating pump B through a spraying liquid inlet pipeline and the inlet valve II of the pump B for circulating spraying;
(2) When the final cooler A is normally produced and the final cooler B is cleaned, firstly cleaning the residual ammonia water, and conveying the residual ammonia water to a residual ammonia water pipeline from a boundary region; opening a residual ammonia water inlet valve B, closing a lean oil inlet valve B and a spraying liquid inlet valve B, enabling spraying liquid sent by a residual ammonia water pipeline to enter a final cooler B through the residual ammonia water inlet valve B for spraying and cleaning, opening a vent valve B, closing a spraying liquid outlet valve B, and enabling cleaned venting liquid to enter a venting liquid pipeline through the vent valve B; opening an inlet valve I of a pump B, closing an inlet valve II of the pump B, enabling the emptying liquid entering the emptying liquid pipeline to enter a spraying liquid circulating pump B through the inlet valve I of the pump B, opening an outlet valve II of the pump B, closing the outlet valve I of the pump B, and enabling the emptying liquid to be pumped out of a boundary region through the outlet valve II of the pump B and a liquid discharge pipeline by the spraying liquid circulating pump B; then cleaning the lean oil, and conveying the lean oil from the boundary region to a lean oil pipeline; opening a lean oil inlet valve B, closing a residual ammonia water inlet valve B and a spraying liquid inlet valve B, enabling spraying liquid sent by a lean oil pipeline to enter a final cooler B through the lean oil inlet valve B for spraying and cleaning, opening a vent valve B, closing a spraying liquid outlet valve B, and enabling cleaned venting liquid to enter a venting liquid pipeline through the vent valve B; opening an inlet valve I of a pump B, closing an inlet valve II of the pump B, enabling the emptying liquid entering the emptying liquid pipeline to enter a spraying liquid circulating pump B through the inlet valve II of the pump B, opening an outlet valve II of the pump B, closing an outlet valve I of the pump B, and enabling the emptying liquid to be pumped out of a boundary region through the outlet valve II of the pump B and a liquid discharge pipeline by the spraying liquid circulating pump B;
(3) When the final cooler B is normally produced and the final cooler A is cleaned, firstly cleaning the residual ammonia water, and conveying the residual ammonia water to a residual ammonia water pipeline from a boundary region; opening a residual ammonia water inlet valve A, closing a lean oil inlet valve A and a spraying liquid inlet valve A, enabling spraying liquid sent by a residual ammonia water pipeline to enter a final cooler A through the residual ammonia water inlet valve A for spraying and cleaning, opening an emptying port valve A, closing a spraying liquid outlet valve A, enabling the cleaned emptying liquid to enter an emptying liquid pipeline through the emptying port valve A; opening a first inlet valve of the pump A, closing a second inlet valve of the pump A, enabling the emptying liquid entering the emptying liquid pipeline to enter a spraying liquid circulating pump A through the first inlet valve of the pump A, opening a second outlet valve of the pump A, closing the first outlet valve of the pump A, and enabling the emptying liquid to be pumped out by the spraying liquid circulating pump A and to pass through the second outlet valve of the pump A and the liquid discharge pipeline to be sent out of the boundary region; then cleaning the lean oil, and conveying the lean oil from the boundary region to a lean oil pipeline; the lean oil inlet valve A is opened, the residual ammonia water inlet valve A and the spraying liquid inlet valve A are closed, spraying liquid sent by a lean oil pipeline enters the final cooler A through the lean oil inlet valve A for spraying and cleaning, the emptying port valve A is opened, the spraying liquid outlet valve A is closed, and the cleaned emptying liquid enters the emptying liquid pipeline through the emptying port valve A; opening a first inlet valve of the pump A, closing a second inlet valve of the pump A, enabling the emptying liquid entering the emptying liquid pipeline to enter the spraying liquid circulating pump A through the second inlet valve of the pump A, opening a second outlet valve of the pump A, closing the first outlet valve of the pump A, and enabling the emptying liquid to be pumped out by the spraying liquid circulating pump A and to pass through the second outlet valve of the pump A and the liquid discharge pipeline to be sent out of the boundary region.
Compared with the prior art, the invention has the beneficial effects that:
1. Through setting up blowdown liquid pipeline and drain line, the blowdown liquid after will wasing final cooler through the circulating pump is discharged to the boundary region, has avoided blowdown liquid to get into condensate tank, further avoids mixing back condensate high temperature and influences final cold effect to because contain naphthalene in the aqueous ammonia, the temperature reduction can lead to naphthalene to enrich again in condensate tank or pipeline, leads to condensate tank or pipeline to form to block up, influences coal gas final cold effect, and the blowdown liquid after wasing is directly sent away, does not have the temperature to drop to lead to naphthalene to block up condensate tank and pipeline.
2. Through setting up lean oil pipeline and surplus aqueous ammonia pipeline, utilize surplus aqueous ammonia and lean oil to wash twice, wash off substances such as naphthalene that enrich on the final cooler influence final cooler resistance more easily.
3. The circulating pump for spraying liquid gives consideration to the circulation of condensate liquid and the discharge of the emptying liquid, so that the investment and the occupied area are reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. A final cooler A; 2. a final cooler B; 3. a condensate tank; 4. a spraying liquid circulating pump A; 5. a spraying liquid circulating pump B; 6. a lean oil inlet valve a; 7. a residual ammonia water inlet valve A; 8. a spray liquid inlet valve A; 9. a lean oil inlet valve B; 10. a residual ammonia water inlet valve B; 11. a spray liquid inlet valve B; 12. a spray liquid outlet valve A; 13. a vent valve A; 14. a spray liquid outlet valve B; 15. a vent valve B; 16. pump a inlet valve one; 17. a pump A inlet valve II; 18. pump B inlet valve one; 19. a pump B inlet valve II; 20. a first pump A outlet valve, a 21 and a second pump A outlet valve; 22. pump B outlet valve one; 23. a second pump B outlet valve; 24. a lean oil conduit; 25. a residual ammonia water pipeline; 26. a spray liquid inlet pipe; 27. a liquid discharge pipe; 28. a spray liquid inlet pump pipeline; 29. a spray liquid outlet conduit; 30. and (5) emptying the liquid pipeline.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the terms "upper/lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured 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.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured/arranged," "coupled," "connected," and the like are to be construed broadly and include, for example, "connected," either fixedly, detachably, or integrally; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, the present invention provides a technical solution: the coke oven gas final cooler resistance cleaning system comprises a lean oil pipeline 24, a residual ammonia water pipeline 25, a spraying liquid circulation pipeline, a venting liquid pipeline 30, a liquid discharge pipeline 27, a final cooler and a circulating pump unit, wherein the final cooler comprises a final cooler A1 and a final cooler B2, the spraying liquid circulation pipeline comprises a spraying liquid inlet pipeline 26, a spraying liquid outlet pipeline 29 and a spraying liquid inlet pump pipeline 28, the spraying liquid inlet pipeline 26 is respectively connected with the upper parts of the final cooler A1 and the final cooler B2, one end of the spraying liquid outlet pipeline 29 is respectively connected with the lower parts of the final cooler A1 and the final cooler B2, the other end of the spraying liquid outlet pipeline 29 is connected with a condensate tank 3, one end of the spraying liquid inlet pump pipeline 28 is connected with the condensate tank 3, the other end of the spraying liquid inlet pump pipeline 28 is connected with the spraying liquid inlet pipeline 26 through the circulating pump unit, and the circulating pump unit comprises a spraying liquid circulating pump A4 and a spraying liquid circulating pump B5. A spray liquid inlet valve A8 is arranged between the spray liquid inlet pipeline 26 and the upper part of the final cooler A, and a spray liquid inlet valve B11 is arranged between the spray liquid inlet pipeline 26 and the upper part of the final cooler B2; a spray liquid outlet valve A12 is arranged between the spray liquid outlet pipeline 29 and the lower part of the final cooler A, and a spray liquid outlet valve B14 is arranged between the spray liquid outlet pipeline 29 and the lower part of the final cooler B2. The spraying liquid inlet pump pipeline 28 is respectively connected with the spraying liquid circulating pump A4 and the spraying liquid circulating pump B5, a pump A inlet valve II 17 is arranged between the spraying liquid inlet pump pipeline 28 and the spraying liquid circulating pump A4, and a pump B inlet valve II 19 is arranged between the spraying liquid inlet pump pipeline 28 and the spraying liquid circulating pump B5. A first pump A outlet valve 20 is arranged between the spray liquid circulating pump A4 and the spray liquid inlet pipeline 26, and a first pump B outlet valve 22 is arranged between the spray liquid circulating pump B5 and the spray liquid inlet pipeline 26.
The lean oil pipeline 24 and the residual ammonia water pipeline 25 are respectively connected with the upper parts of the final cooler A1 and the final cooler B2, the bottoms of the final cooler A1 and the final cooler B2 are connected with the emptying liquid pipeline 30, a lean oil inlet valve A6 is arranged between the lean oil pipeline 24 and the upper part of the final cooler A1, and a lean oil inlet valve B9 is arranged between the lean oil pipeline 24 and the upper part of the final cooler B2. A residual ammonia water inlet valve A7 is arranged between the residual ammonia water pipeline 25 and the upper part of the final cooler A1, and a residual ammonia water inlet valve B10 is arranged between the residual ammonia water pipeline 25 and the upper part of the final cooler B2.
The emptying liquid pipeline 30 is connected with the liquid discharge pipeline 27 through a circulating pump unit, an emptying port valve A13 is arranged between the final cooler A1 and the emptying liquid pipeline 30, and an emptying port valve B15 is arranged between the final cooler B2 and the emptying liquid pipeline 30. A pump A inlet valve I16 is arranged between the emptying liquid pipeline 30 and the spraying liquid circulating pump A4, and a pump B inlet valve I18 is arranged between the emptying liquid pipeline 30 and the spraying liquid circulating pump B5. And a second pump A outlet valve 21 is arranged between the spray liquid circulating pump A4 and the liquid discharge pipeline 27, and a second pump B outlet valve 23 is arranged between the spray liquid circulating pump B5 and the liquid discharge pipeline 27.
The application method of the coke oven gas final cooler resistance cleaning system comprises the following steps:
(1) When the final cooler A1 and the final cooler B2 are produced normally, the condensate is sprayed to the final cooler A1 and the final cooler B2 through a spraying liquid circulating pump A4 and a spraying liquid circulating pump B5 respectively; during normal production, spraying circulation is needed, and the effect is to flush impurities in the gas. When spraying the final cooler A1, opening a first pump A outlet valve 20, closing a second pump A outlet valve 21, and pumping condensate from a spraying liquid circulating pump A4 to a spraying liquid inlet pipeline 26; opening a spraying liquid inlet valve A8, closing a lean oil inlet valve A6 and a residual ammonia water inlet valve A7, enabling condensate sent by a spraying liquid inlet pipeline 26 to enter a final cooler A1 through the spraying liquid inlet valve A8 for spraying, opening a spraying liquid outlet valve A12, closing a vent valve A13, and enabling sprayed condensate to enter a condensate tank 3 through the spraying liquid outlet valve A12; opening a second pump A inlet valve 17, closing a first pump A inlet valve 16, and enabling condensate entering the condensate tank 3 to enter a spray liquid circulating pump A4 through a spray liquid inlet pipeline 28 and the second pump A inlet valve 17 for circulating spraying; when spraying the final cooler B2, opening the first outlet valve 22 of the pump B, closing the second outlet valve 23 of the pump B, and pumping condensate from the spraying liquid circulating pump B5 to the spraying liquid inlet pipeline 26; opening a spraying liquid inlet valve B11, closing a lean oil inlet valve B9 and a residual ammonia water inlet valve B10, enabling condensate sent by a spraying liquid inlet pipeline 26 to enter a final cooler B2 through the spraying liquid inlet valve B11 for spraying, opening a spraying liquid outlet valve B14, closing a vent valve B15, enabling sprayed condensate to enter a condensate tank 3 through the spraying liquid outlet valve B14; opening a second pump B inlet valve 19, closing a first pump B inlet valve 18, and enabling condensate entering the condensate tank 3 to enter a spraying liquid circulating pump B5 through a spraying liquid inlet pipeline 28 and the second pump B inlet valve 19 for circulating spraying;
(2) When the final cooler A1 is normally produced and the final cooler B2 is cleaned, firstly cleaning the residual ammonia water, and delivering the residual ammonia water to a residual ammonia water pipeline 25 from a boundary region; opening a residual ammonia water inlet valve B10, closing a lean oil inlet valve B9 and a spraying liquid inlet valve B11, enabling spraying liquid sent by a residual ammonia water pipeline 25 to enter a final cooler B2 through the residual ammonia water inlet valve B10 for spraying and cleaning, opening a vent valve B15, closing a spraying liquid outlet valve B14, enabling cleaned venting liquid to enter a venting liquid pipeline 30 through the vent valve B15; opening a first pump B inlet valve 18, closing a second pump B inlet valve 19, enabling the emptying liquid entering the emptying liquid pipeline 30 to enter a spraying liquid circulating pump B5 through the first pump B inlet valve 18, opening a second pump B outlet valve 23, closing a first pump B outlet valve 22, and enabling the emptying liquid to be pumped out of the boundary region through the second pump B outlet valve 23 and a liquid discharge pipeline 27 by the spraying liquid circulating pump B5; then a lean oil purge is performed, the lean oil being sent from the interface to a lean oil conduit 24; the lean oil inlet valve B9 is opened, the residual ammonia water inlet valve B10 and the spraying liquid inlet valve B11 are closed, the spraying liquid sent by the lean oil pipeline 24 enters the final cooler B2 through the lean oil inlet valve B9 for spraying and cleaning, the vent valve B15 is opened, the spraying liquid outlet valve B14 is closed, and the cleaned venting liquid enters the venting liquid pipeline 30 through the vent valve B15; opening a first pump B inlet valve 18, closing a second pump B inlet valve 19, enabling the emptying liquid entering the emptying liquid pipeline 30 to enter a spraying liquid circulating pump B5 through the second pump B inlet valve 19, opening a second pump B outlet valve 23, closing a first pump B outlet valve 22, and enabling the emptying liquid to be pumped out of the boundary region through the second pump B outlet valve 23 and a liquid discharge pipeline 27 by the spraying liquid circulating pump B5;
When the final cooler B2 is normally produced and the final cooler A1 is cleaned, firstly cleaning the residual ammonia water, and delivering the residual ammonia water to a residual ammonia water pipeline 25 from a boundary region; opening a residual ammonia water inlet valve A7, closing a lean oil inlet valve A6 and a spraying liquid inlet valve A8, enabling spraying liquid sent by a residual ammonia water pipeline 25 to enter a final cooler A1 through the residual ammonia water inlet valve A7 for spraying and cleaning, opening a vent valve A13, closing a spraying liquid outlet valve A12, enabling cleaned venting liquid to enter a venting liquid pipeline 30 through the vent valve A13; opening a first pump A inlet valve 16, closing a second pump A inlet valve 17, enabling the emptying liquid entering the emptying liquid pipeline 30 to enter a spraying liquid circulating pump A4 through the first pump A inlet valve 16, opening a second pump A outlet valve 21, closing a first pump A outlet valve 20, enabling the emptying liquid to be pumped out of a boundary region through the second pump A outlet valve 21 and a liquid discharge pipeline 27 by the spraying liquid circulating pump A4; then a lean oil purge is performed, the lean oil being sent from the interface to a lean oil conduit 24; the lean oil inlet valve A6 is opened, the residual ammonia water inlet valve A7 and the spray liquid inlet valve A8 are closed, the spray liquid sent by the lean oil pipeline 24 enters the final cooler A1 through the lean oil inlet valve A6 for spray cleaning, the vent valve A13 is opened, the spray liquid outlet valve A12 is closed, and the cleaned vent liquid enters the vent liquid pipeline 30 through the vent valve A13; opening the first inlet valve 16 of the pump A, closing the second inlet valve 17 of the pump A, enabling the emptying liquid entering the emptying liquid pipeline 30 to enter the spraying liquid circulating pump A4 through the second inlet valve 17 of the pump A, opening the second outlet valve 21 of the pump A, closing the first outlet valve 20 of the pump A, and enabling the emptying liquid to be pumped out of the boundary region through the second outlet valve 21 of the pump A and the liquid discharge pipeline 27 by the spraying liquid circulating pump A4.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. A coke oven gas final cooler resistance cleaning system is characterized in that: comprises a lean oil pipeline (24), a residual ammonia water pipeline (25), a spraying liquid circulation pipeline, a vent liquid pipeline (30), a liquid discharge pipeline (27), a final cooler and a circulating pump unit, wherein the final cooler comprises a final cooler A (1) and a final cooler B (2), the spraying liquid circulation pipeline comprises a spraying liquid inlet pipeline (26), a spraying liquid outlet pipeline (29) and a spraying liquid inlet pump pipeline (28), the spraying liquid inlet pipeline (26) is respectively connected with the upper parts of the final cooler A (1) and the final cooler B (2), one end of the spraying liquid outlet pipeline (29) is respectively connected with the lower parts of the final cooler A (1) and the final cooler B (2), The other end of the spraying liquid outlet pipeline (29) is connected with the condensate tank (3), one end of the spraying liquid inlet pipeline (28) is connected with the condensate tank (3), the other end of the spraying liquid inlet pipeline (28) is connected with the spraying liquid inlet pipeline (26) through a circulating pump unit, the lean oil pipeline (24) and the residual ammonia water pipeline (25) are respectively connected with the upper parts of the final cooler A (1) and the final cooler B (2), the bottoms of the final cooler A (1) and the final cooler B (2) are connected with the emptying liquid pipeline (30), and the emptying liquid pipeline (30) is connected with the liquid discharge pipeline (27) through the circulating pump unit; The circulating pump unit comprises a spraying liquid circulating pump A (4) and a spraying liquid circulating pump B (5); a spray liquid inlet valve A (8) is arranged between the spray liquid inlet pipeline (26) and the upper part of the final cooler A (1), and a spray liquid inlet valve B (11) is arranged between the spray liquid inlet pipeline (26) and the upper part of the final cooler B (2); a spray liquid outlet valve A (12) is arranged between the spray liquid outlet pipeline (29) and the lower part of the final cooler A (1), and a spray liquid outlet valve B (14) is arranged between the spray liquid outlet pipeline (29) and the lower part of the final cooler B (2); the spraying liquid inlet pump pipeline (28) is respectively connected with the spraying liquid circulating pump A (4) and the spraying liquid circulating pump B (5), a pump A inlet valve II (17) is arranged between the spraying liquid inlet pump pipeline (28) and the spraying liquid circulating pump A (4), and a pump B inlet valve II (19) is arranged between the spraying liquid inlet pump pipeline (28) and the spraying liquid circulating pump B (5); A pump A outlet valve I (20) is arranged between the spray liquid circulating pump A (4) and the spray liquid inlet pipeline (26), and a pump B outlet valve I (22) is arranged between the spray liquid circulating pump B (5) and the spray liquid inlet pipeline (26); an emptying port valve A (13) is arranged between the final cooler A (1) and the emptying liquid pipeline (30), and an emptying port valve B (15) is arranged between the final cooler B (2) and the emptying liquid pipeline (30); a pump A inlet valve I (16) is arranged between the emptying liquid pipeline (30) and the spraying liquid circulating pump A (4), and a pump B inlet valve I (18) is arranged between the emptying liquid pipeline (30) and the spraying liquid circulating pump B (5); And a second pump A outlet valve (21) is arranged between the spray liquid circulating pump A (4) and the liquid discharge pipeline (27), and a second pump B outlet valve (23) is arranged between the spray liquid circulating pump B (5) and the liquid discharge pipeline (27).
2. A coke oven gas final cooler resistance cleaning system according to claim 1, wherein: a lean oil inlet valve A (6) is arranged between the lean oil pipeline (24) and the upper part of the final cooler A (1), and a lean oil inlet valve B (9) is arranged between the lean oil pipeline (24) and the upper part of the final cooler B (2).
3. A coke oven gas final cooler resistance cleaning system according to claim 2, wherein: a residual ammonia water inlet valve A (7) is arranged between the residual ammonia water pipeline (25) and the upper part of the final cooler A (1), and a residual ammonia water inlet valve B (10) is arranged between the residual ammonia water pipeline (25) and the upper part of the final cooler B (2).
4. A method of using a coke oven gas final cooler resistance cleaning system according to claim 3, comprising the steps of:
(1) When the final cooler A (1) and the final cooler B (2) are produced normally, the condensate is sprayed to the final cooler A (1) and the final cooler B (2) through a spraying liquid circulating pump A (4) and a spraying liquid circulating pump B (5) respectively; when spraying the final cooler A (1), opening a first outlet valve (20) of the pump A, closing a second outlet valve (21) of the pump A, and pumping condensate from a spraying liquid circulating pump A (4) to a spraying liquid inlet pipeline (26); opening a spraying liquid inlet valve A (8), closing a lean oil inlet valve A (6) and a residual ammonia water inlet valve A (7), enabling condensate sent by a spraying liquid inlet pipeline (26) to enter a final cooler A (1) for spraying through the spraying liquid inlet valve A (8), opening a spraying liquid outlet valve A (12), closing an emptying port valve A (13), enabling sprayed condensate to enter a condensate tank (3) through the spraying liquid outlet valve A (12); opening a second pump A inlet valve (17), closing a first pump A inlet valve (16), and enabling condensate entering the condensate tank (3) to enter a spraying liquid circulating pump A (4) through a spraying liquid inlet pipeline (28) and the second pump A inlet valve (17) for circulating spraying; when spraying the final cooler B (2), opening a first outlet valve (22) of the pump B, closing a second outlet valve (23) of the pump B, and pumping condensate from a spraying liquid circulating pump B (5) to a spraying liquid inlet pipeline (26); opening a spraying liquid inlet valve B (11), closing a lean oil inlet valve B (9) and a residual ammonia water inlet valve B (10), enabling condensate sent by a spraying liquid inlet pipeline (26) to enter a final cooler B (2) for spraying through the spraying liquid inlet valve B (11), opening a spraying liquid outlet valve B (14), closing an emptying port valve B (15), enabling sprayed condensate to enter a condensate tank (3) through the spraying liquid outlet valve B (14); opening a second pump B inlet valve (19), closing a first pump B inlet valve (18), and enabling condensate entering the condensate tank (3) to enter a spraying liquid circulating pump B (5) through a spraying liquid inlet pipeline (28) and the second pump B inlet valve (19) for circulating spraying;
(2) When the final cooler A (1) is normally produced and the final cooler B (2) is cleaned, firstly cleaning the residual ammonia water, and conveying the residual ammonia water to a residual ammonia water pipeline (25) from a boundary region; opening a residual ammonia water inlet valve B (10), closing a lean oil inlet valve B (9) and a spraying liquid inlet valve B (11), enabling spraying liquid sent by a residual ammonia water pipeline (25) to enter a final cooler B (2) through the residual ammonia water inlet valve B (10) for spraying and cleaning, opening a vent valve B (15), closing a spraying liquid outlet valve B (14), enabling cleaned venting liquid to enter a venting liquid pipeline (30) through the vent valve B (15); opening a first pump B inlet valve (18), closing a second pump B inlet valve (19), enabling the emptying liquid entering the emptying liquid pipeline (30) to enter a spraying liquid circulating pump B (5) through the first pump B inlet valve (18), opening a second pump B outlet valve (23), closing a first pump B outlet valve (22), and enabling the emptying liquid to be pumped out of the boundary region through the second pump B outlet valve (23) and a liquid discharge pipeline (27) by the spraying liquid circulating pump B (5); then cleaning the lean oil, and sending the lean oil from the boundary region to a lean oil pipeline (24); the lean oil inlet valve B (9) is opened, the residual ammonia water inlet valve B (10) and the spraying liquid inlet valve B (11) are closed, spraying liquid sent by the lean oil pipeline (24) enters the final cooler B (2) through the lean oil inlet valve B (9) for spraying and cleaning, the vent valve B (15) is opened, the spraying liquid outlet valve B (14) is closed, and the cleaned venting liquid enters the venting liquid pipeline (30) through the vent valve B (15); opening a first pump B inlet valve (18), closing a second pump B inlet valve (19), enabling the emptying liquid entering the emptying liquid pipeline (30) to enter the spraying liquid circulating pump B (5) through the second pump B inlet valve (19), opening a second pump B outlet valve (23), closing a first pump B outlet valve (22), and enabling the emptying liquid to be pumped out of the boundary region through the second pump B outlet valve (23) and the liquid discharge pipeline (27) by the spraying liquid circulating pump B (5);
(3) When the final cooler B (2) is normally produced and the final cooler A (1) is cleaned, firstly cleaning the residual ammonia water, and conveying the residual ammonia water to a residual ammonia water pipeline (25) from a boundary region; opening a residual ammonia water inlet valve A (7), closing a lean oil inlet valve A (6) and a spraying liquid inlet valve A (8), enabling spraying liquid sent by a residual ammonia water pipeline (25) to enter a final cooler A (1) through the residual ammonia water inlet valve A (7) for spraying and cleaning, opening a vent valve A (13), closing a spraying liquid outlet valve A (12), enabling cleaned venting liquid to enter a venting liquid pipeline (30) through the vent valve A (13); opening a first pump A inlet valve (16), closing a second pump A inlet valve (17), enabling the emptying liquid entering the emptying liquid pipeline (30) to enter a spraying liquid circulating pump A (4) through the first pump A inlet valve (16), opening a second pump A outlet valve (21), closing a first pump A outlet valve (20), enabling the emptying liquid to be pumped out of a boundary region through the second pump A outlet valve (21) and a liquid discharge pipeline (27) by the spraying liquid circulating pump A (4); then cleaning the lean oil, and sending the lean oil from the boundary region to a lean oil pipeline (24); the lean oil inlet valve A (6) is opened, the residual ammonia water inlet valve A (7) and the spray liquid inlet valve A (8) are closed, the spray liquid sent by the lean oil pipeline (24) enters the final cooler A (1) through the lean oil inlet valve A (6) for spray cleaning, the vent valve A (13) is opened, the spray liquid outlet valve A (12) is closed, and the cleaned vent liquid enters the vent liquid pipeline (30) through the vent valve A (13); opening a first pump A inlet valve (16), closing a second pump A inlet valve (17), enabling the emptying liquid entering the emptying liquid pipeline (30) to enter the spraying liquid circulating pump A (4) through the second pump A inlet valve (17), opening a second pump A outlet valve (21), closing a first pump A outlet valve (20), and enabling the emptying liquid to be pumped out of the boundary region through the second pump A outlet valve (21) and the liquid discharge pipeline (27) by the spraying liquid circulating pump A (4).
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| GB459311A (en) * | 1935-07-17 | 1937-01-06 | Koppers Co Delaware | Coke oven gas by-product recovery |
| JP3345517B2 (en) * | 1994-09-22 | 2002-11-18 | 株式会社東芝 | Seawater system marine habitat removal device for power plant and cleaning method thereof |
| DE102005022634B4 (en) * | 2005-05-11 | 2010-03-04 | Meiko Maschinenbau Gmbh & Co. Kg | Method and device for the treatment of excretory vessels |
| KR101100372B1 (en) * | 2009-04-22 | 2011-12-30 | 주식회사 케이피엠테크 | Single tank cleaning device |
| CN103031159A (en) * | 2013-01-07 | 2013-04-10 | 唐山中润煤化工有限公司 | Coal gas purifying and cooling technology and system |
| CN207335523U (en) * | 2017-08-30 | 2018-05-08 | 山东四化环保节能工程有限公司 | The oil removing of coke oven desulfurization coal gas removes naphthalene primary cooler sprinkling system |
| CN108913171A (en) * | 2018-07-06 | 2018-11-30 | 鞍钢股份有限公司 | Efficient cleaning system for reducing resistance of primary cooler and cleaning method |
| CN111662753A (en) * | 2020-05-08 | 2020-09-15 | 广东韶钢松山股份有限公司 | Tandem type coke oven gas final cooling purification equipment and process thereof |
| CN213835199U (en) * | 2020-11-23 | 2021-07-30 | 刘兰芳 | Final cooling tower wash oil sprays except that naphthalene device |
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