CN214457786U - Closed decoking system - Google Patents
Closed decoking system Download PDFInfo
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- CN214457786U CN214457786U CN202120628172.9U CN202120628172U CN214457786U CN 214457786 U CN214457786 U CN 214457786U CN 202120628172 U CN202120628172 U CN 202120628172U CN 214457786 U CN214457786 U CN 214457786U
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Abstract
The utility model discloses a closed decoking system, which comprises a conveying mechanism, a dehydration cycle structure and a tail gas treatment device; the conveying mechanism comprises a coke tower, a petroleum coke crushing unit and a mixing and stirring bin; the dehydration circulating mechanism comprises a dehydration bin, a filtered water collecting tank, a filter and a cold-cutting coke water tank; the tail gas treatment device is respectively communicated with an exhaust pipeline of the coke tower, an exhaust pipeline of the petroleum coke crushing unit, an exhaust pipeline of the mixing and stirring bin, an exhaust pipeline of the dewatering bin, an exhaust pipeline of the water filtering collection tank and an exhaust pipeline of the filter through pipelines; the whole system is of a closed structure. The utility model provides an airtight decoking system decoking in-process can realize stablizing in succession the close transport and the dehydration to realize the cyclic utilization of decoking water, avoid smuggleing harmful gas and dust pollution environment secretly in the petroleum coke, environmental protection, resources are saved.
Description
Technical Field
The utility model relates to a petrochemical industry petroleum coke processing technology field, more specifically says, in particular to airtight decoking system.
Background
Delayed coking is a secondary petroleum processing technology, which is a technology for producing rich gas, crude gasoline, diesel oil, wax oil and petroleum coke by taking heavy oil poor in hydrogen as a raw material, rapidly heating the heavy oil to a coking reaction temperature of about 500 ℃ through a heating furnace, and entering a coke tower for deep thermal cracking and condensation reaction. After the reaction is finished, the high-temperature petroleum coke is cooled by steam and water, and then is subjected to high-pressure water coke cutting and decoking. The mixture of petroleum coke and water produced in the process is discharged into a coke pool to be separated into coke and water.
At present, petroleum coke is transported to a petroleum coke storage yard by a crane after cooled petroleum coke is grabbed by the crane. In the process, petroleum coke comes out of the coke tower to reach a storage yard, the whole process is all open, and a coke pool occupies a large area, so that the problems that: the petroleum coke is exposed in the open air, and dust is randomly diffused; the steam volatilization amount is large, the hydrocarbon oil gas carrying coke powder, suspended matters and sulfides is high in concentration, the smell is foul, and the environmental pollution is caused; operators are exposed in a severe operating environment, and have hidden troubles of occupational diseases; the phenomenon of scattering is common in the process of shipping, and the device and the surrounding environment are damaged. With the attention of people on environmental protection, environmental protection regulations will put more strict requirements on the discharge of oil refineries, so how to improve the operating environment and reduce pollution is a problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides an airtight decoking system makes the decoking in-process can realize stabilizing airtight transportation in succession and dehydration to realize the cyclic utilization of decoking water, avoid smuggleing harmful gas and dust pollution environment secretly in the petroleum coke, environmental protection, resources are saved.
A closed decoking system comprises a conveying mechanism, a dehydration circulating structure and a tail gas treatment device;
the conveying mechanism comprises a coke tower, a petroleum coke crushing unit and a mixing and stirring bin;
the discharge hole of the coke tower is connected with the feed inlet of the petroleum coke crushing unit, and the discharge hole of the petroleum coke crushing unit is connected with the feed inlet of the mixing and stirring bin;
the dehydration circulating mechanism comprises a dehydration bin, a filtered water collecting tank, a filter and a cold-cutting coke water tank;
the feed inlet of the dewatering bin is connected with the discharge outlet of the mixing and stirring bin;
the water outlet of the dewatering bin is connected with the filtered water collecting tank;
a purified water drainage pipe of the filtered water collection tank is connected with a water inlet of the mixing and stirring bin through a slurry pump; the turbid water drainage pipe of the filtered water collection tank is connected with the feeding hole of the filter through a slurry pump;
the first drainage pipeline of the filter is connected with the water inlet of the cold-cutting coke water tank through a slurry pump, and the water outlet of the cold-cutting coke water tank is connected with the water inlet of the dewatering bin through a filter screen flushing pump;
the tail gas treatment device is respectively communicated with an exhaust pipeline of the coke tower, an exhaust pipeline of the petroleum coke crushing unit, an exhaust pipeline of the mixing and stirring bin, an exhaust pipeline of the dewatering bin, an exhaust pipeline of the water filtering collection tank and an exhaust pipeline of the filter through pipelines;
the whole system is of a closed structure.
The utility model provides a closed decoking system, preferably, the second drainage pipe of the filter is connected with the feed inlet of the dewatering bin through a slurry pump;
the utility model provides a closed decoking system, preferably, the second drainage pipe of filter is used for discharging the mixture of the burnt powder and the water that the particle size is 3mm-6 mm.
The utility model provides a closed decoking system, preferably, the first drainage pipeline of filter is used for discharging the mixture of fine coke and water that the particle size is below 3 mm.
The utility model provides an airtight decoking system, preferably, petroleum coke crushing unit includes twin roll cutting machine and feed formula breaker.
The utility model provides an airtight decoking system, preferably, petroleum coke crushing unit includes feed formula breaker.
The utility model provides an airtight decoking system preferably, still includes conveyer, conveyer with dehydration bin connects for the petroleum coke after the transportation dehydration.
The utility model has the advantages that:
the utility model provides a closed decoking system, which comprises a conveying mechanism, a dehydration cycle structure and a tail gas treatment device; wherein conveying mechanism includes coke tower, petroleum coke crushing unit and mixes the stirring storehouse, and solidification petroleum coke is discharged from the coke tower, gets into after the breaker is broken to appropriate granularity and mixes the stirring storehouse, guarantees whole transportation process airtight, can not produce the pollution. Broken petroleum coke gets into the dehydration cycle mechanism after mixing the stirring storehouse, and the dehydration cycle mechanism includes dehydration storehouse, water filtration collection tank, filter and cold cutting burnt water pitcher, and the dehydration cycle mechanism also is airtight structure, has realized the cyclic utilization of decoking water. The coke tower, the petroleum coke crushing unit, the mixing and stirring bin, the dewatering bin, the filtered water collecting tank and the filter of the system are all provided with exhaust pipelines, and exhaust harmful gas can be collected and purified in a tail gas treatment device. The utility model provides an airtight decoking system makes the decoking in-process can realize stabilizing airtight transportation in succession and dehydration to realize the cyclic utilization of decoking water, avoid smuggleing harmful gas and dust pollution environment secretly in the petroleum coke, environmental protection, resources are saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of a closed decoking system according to an embodiment of the present invention;
FIG. 2 is a process flow diagram of a closed decoking process provided by an embodiment of the present invention;
the system comprises a coke tower 1, a petroleum coke crushing unit 2, a mixing and stirring bin 3, a dewatering bin 4, a filtered water collecting tank 5, a filter 6 and a cold-cutting coke water tank 7.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
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 application.
This embodiment is written in a progressive manner.
The embodiment of the utility model provides a closed decoking system, which comprises a conveying mechanism, a dehydration cycle structure and a tail gas treatment device;
the conveying mechanism comprises a coke tower 1, a petroleum coke crushing unit 2 and a mixing and stirring bin 3, wherein a discharge port of the coke tower 1 is connected with a feed port of the petroleum coke crushing unit 2, and a discharge port of the petroleum coke crushing unit 2 is connected with a feed port of the mixing and stirring bin 3;
wherein, the dehydration circulating mechanism comprises a dehydration bin 4, a filtered water collecting tank 5, a filter 6 and a cold-cutting coke water tank 7; the feed inlet of the dewatering bin 4 is connected with the discharge outlet of the mixing and stirring bin 3; the water outlet of the dewatering bin 4 is connected with the filtered water collecting tank 5; a purified water drain pipe of the filtered water collecting tank 5 is connected with a water inlet of the mixing and stirring bin 3 through a slurry pump; a turbid water drain pipe of the filtered water collection tank 5 is connected with a feed port of the filter 6 through a slurry pump; a first drainage pipeline of the filter 6 is connected with a water inlet of the cold-cutting coke water tank 7 through a slurry pump, and a water outlet of the cold-cutting coke water tank 7 is connected with a water inlet of the dewatering bin 4 through a filter screen flushing pump;
the tail gas treatment device is respectively communicated with an exhaust pipeline of the coke tower 1, an exhaust pipeline of the petroleum coke crushing unit 2, an exhaust pipeline of the mixing and stirring bin 3, an exhaust pipeline of the dewatering bin 4, an exhaust pipeline of the filtered water collecting tank 5 and an exhaust pipeline of the filter 6 through pipelines;
wherein, the whole system is of a closed structure.
In the prior art, the decoking process is open, and the coke pool occupies a large area, so that the problems that: the petroleum coke is exposed in the open air, and dust is randomly diffused; the steam volatilization amount is large, the hydrocarbon oil gas carrying coke powder, suspended matters and sulfides is high in concentration, the smell is foul, and the environmental pollution is caused; operators are exposed in a severe operating environment, and have hidden troubles of occupational diseases; the phenomenon of scattering is common in the process of shipping, and the device and the surrounding environment are damaged.
The utility model provides a closed decoking system, which comprises a conveying mechanism, a dehydration cycle structure and a tail gas treatment device; wherein conveying mechanism includes coke tower 1, petroleum coke crushing unit 2 and mixes stirring storehouse 3, and solidification petroleum coke is discharged from coke tower 1, and the crusher is broken to get into after the appropriate granularity and mix stirring storehouse 3, guarantees whole transportation process airtight, can not produce the pollution. Broken petroleum coke gets into the dehydration cycle mechanism after mixing stirring storehouse 3, and the dehydration cycle mechanism includes dehydration storehouse 4, water filtration collection tank 5, filter 6 and cold cutting burnt water pitcher 7, and the dehydration cycle mechanism also is airtight structure, has realized the cyclic utilization of decoking water. Coke tower 1, the broken unit 2 of petroleum coke of this system, mix stirring storehouse 3, dehydration storehouse 4, filter water collection tank 5 and filter 6 and all be equipped with exhaust duct, can collect exhaust harmful gas and handle to tail gas processing apparatus and purify. The utility model provides an airtight decoking system makes the decoking in-process can realize stabilizing airtight transportation in succession and dehydration to realize the cyclic utilization of decoking water, avoid smuggleing harmful gas and dust pollution environment secretly in the petroleum coke, environmental protection, resources are saved.
The embodiment of the utility model provides a closed decoking system, as preferred scheme, filter 6 still includes second drainage pipe, and filter 6's second drainage pipe passes through the slurry pump and is connected with dehydration storehouse 4's feed inlet for the decoking that filter 6 filters out gets into dehydration storehouse 4 through second drainage pipe and further dewaters, with the large granule coke powder of desorption decoking.
The embodiment of the utility model provides a closed decoking system, preferably, the second drainage pipe of filter 6 is used for discharging the mixture of 3mm-6 mm's particle size coke powder and water.
The embodiment of the utility model provides a closed decoking system, preferably, the first drainage pipe of filter 6 is used for discharging the mixture of fine coke and water that the particle size is below 3 mm.
The embodiment of the utility model provides an airtight decoking system, preferably, petroleum coke crushing unit 2 includes twin roll cutting machine and feed formula breaker. In addition, the embodiment of the utility model provides a closed decoking system, petroleum coke crushing unit 2 can also be feed formula breaker.
The embodiment of the utility model provides an airtight decoking system preferably, still includes conveyer, and conveyer is connected with dehydration bin 4 for the petroleum coke after the transportation dehydration.
Referring to fig. 2, the decoking process of the closed decoking system provided by the utility model comprises the following steps:
(1) the solidified petroleum coke and water flow from the coke tower 1 to a petroleum coke crushing unit 2, and the crushed petroleum coke and water are conveyed to a mixing and stirring bin 3 for mixing and stirring;
(2) the coke-water mixture after mixing and stirring enters a dehydration bin 4 for dehydration, and the coke-water mixture dehydrated and separated by the dehydration bin 4 enters a filtered water collection tank 5;
(3) the coke water mixture settled on the lower layer of the filtered water collecting tank 5 is discharged from the turbid water drainage pipe and enters the filter 6 through a slurry pump;
after water on the upper layer of the filtered water collecting tank 5 is discharged from the purified water drainage pipe, the water enters the mixing and stirring bin 3 through a slurry pump;
(4) the mixture of the coke powder and the water which are filtered and separated by the filter 6 is discharged from the first water discharge pipeline and then enters the cold-cutting coke water tank 7 through a slurry pump, and the coke water mixture in the cold-cutting coke water tank 7 enters the dewatering bin 4 through a filter screen flushing pump;
(5) the exhaust gas of the coke tower 1, the exhaust gas of the petroleum coke crushing unit 2, the exhaust gas of the mixing and stirring bin 3, the exhaust gas of the dewatering bin 4, the exhaust gas of the filtered water collecting tank 5 and the exhaust gas of the filter 6 all enter the tail gas treatment device.
The above detailed description is made on the closed decoking system provided by the utility model. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (7)
1. A closed decoking system is characterized by comprising a conveying mechanism, a dehydration circulating structure and a tail gas treatment device;
the conveying mechanism comprises a coke tower, a petroleum coke crushing unit and a mixing and stirring bin;
the discharge hole of the coke tower is connected with the feed inlet of the petroleum coke crushing unit, and the discharge hole of the petroleum coke crushing unit is connected with the feed inlet of the mixing and stirring bin;
the dehydration circulating structure comprises a dehydration bin, a filtered water collecting tank, a filter and a cold-cutting coke water tank;
the feed inlet of the dewatering bin is connected with the discharge outlet of the mixing and stirring bin;
the water outlet of the dewatering bin is connected with the filtered water collecting tank;
a purified water drainage pipe of the filtered water collection tank is connected with a water inlet of the mixing and stirring bin through a slurry pump; the turbid water drainage pipe of the filtered water collection tank is connected with the feeding hole of the filter through a slurry pump;
the first drainage pipeline of the filter is connected with the water inlet of the cold-cutting coke water tank through a slurry pump, and the water outlet of the cold-cutting coke water tank is connected with the water inlet of the dewatering bin through a filter screen flushing pump;
the tail gas treatment device is respectively communicated with an exhaust pipeline of the coke tower, an exhaust pipeline of the petroleum coke crushing unit, an exhaust pipeline of the mixing and stirring bin, an exhaust pipeline of the dewatering bin, an exhaust pipeline of the water filtering collection tank and an exhaust pipeline of the filter through pipelines;
the whole system is of a closed structure.
2. The closed decoking system according to claim 1, wherein the second water discharge pipeline of the filter is connected to the feed inlet of the dewatering bin by a slurry pump.
3. The closed decoking system according to claim 2, wherein the second water discharge line of the filter is used to discharge a mixture of coke powder and water having a particle size of 3mm to 6 mm.
4. The closed decoking system according to claim 1, wherein the first drainage pipe of the filter is used for discharging a mixture of coke powder and water having a particle size of 3mm or less.
5. The closed decoking system of claim 1, wherein the petroleum coke breaking unit comprises a twin roll cutter and a feed breaker.
6. The closed decoking system of claim 1, wherein the petroleum coke breaking unit comprises a feed breaker.
7. The closed decoking system according to claim 1, further comprising a transportation means connected to said dewatering bin for transporting the dewatered petroleum coke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120628172.9U CN214457786U (en) | 2021-03-26 | 2021-03-26 | Closed decoking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120628172.9U CN214457786U (en) | 2021-03-26 | 2021-03-26 | Closed decoking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214457786U true CN214457786U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120628172.9U Active CN214457786U (en) | 2021-03-26 | 2021-03-26 | Closed decoking system |
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| CN (1) | CN214457786U (en) |
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2021
- 2021-03-26 CN CN202120628172.9U patent/CN214457786U/en active Active
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