Closed gas-tight system and method for producing commercial petroleum coke pieces from hardened petroleum coke in coke drum unit

Abstract

FIELD: coke production.SUBSTANCE: closed, gas-tight system is proposed for producing commercial pieces of petroleum coke from hardened petroleum coke in a coke drum unit, adapted for connection to a coke drum unit (X) containing hardened petroleum coke. The system comprises a coke crusher (C), a pipeline through which oil coke sludge is directed to a closed sludge pond, a closed sludge pond (E) and a dewatering hopper unit (G). In addition, the system comprises a closed tank (I) for drainage water, adapted to receive filtered water and petroleum coke fines from the installation (G), a single water reservoir (L), adapted to receive filtered water discharged from the tank (I), a discharge pipeline (2) for heated quenching water, intended for directing heated quenching water coming from the coke drum installation (X) into a slurry pool (E), and a pipeline (3) for cooling water, passing from the water tank (L) to the discharge pipeline (2) and connecting to the discharge pipeline (2) for supplying cooling water from the tank (L) to the discharge pipeline (2).EFFECT: development of a system that virtually eliminates emissions of steam and coke breeze into the environment.11 cl, 1 dwg

Description

[0001] The invention relates to a closed, gas-tight system for producing marketable petroleum coke lumps from solidified petroleum coke in a coke drum plant and to a method for producing marketable petroleum coke lumps from solidified petroleum coke in a coke drum plant. More specifically, the invention relates to an environmentally friendly system and an environmentally friendly method for processing coke, or ECHO. EP 2707458 B1 describes a closed-loop coke sludge processing system and a method for producing marketable petroleum coke pieces from solidified petroleum coke in a coke drum plant. The system disclosed in this document is not environmentally friendly, as significant amounts of steam and coke breeze are released into the environment during operation. Furthermore, the process performed by this system is highly costly.

[0003] Thus, the objective of the present invention is to develop a system and method that virtually eliminate emissions of steam and coke breeze into the environment and are also low-cost to implement and operate.

[0004] The solution to the stated problem is fully disclosed in the independent claims. Preferred embodiments of the invention are defined in the dependent claims.

[0005] The present invention provides a closed, gas-tight system for producing commercial petroleum coke pieces from solidified petroleum coke in a coke drum unit, adapted to be connected to a coke drum unit containing solidified petroleum coke, and comprising:

[0006] a coke crusher that crushes petroleum coke to produce marketable pieces of petroleum coke and is adapted to be connected to a coke drum plant, in particular, by means of a flexible adapter;

[0007] a pipeline, in particular a closed lock channel, through which oil coke sludge is directed to a closed sludge pond;

[0008] closed sludge pool;

[0009] a dewatering bunker unit adapted to receive petroleum coke sludge coming from a sludge basin and accumulate marketable pieces of petroleum coke, and also performing a filtering function to drain filtered drainage water and petroleum coke fines from the bottom section of the dewatering bunker unit;

[0010] a closed drainage water tank, remote from the sludge pond and adapted to receive filtered water and petroleum coke fines coming from the dewatering hopper plant;

[0011] The only water tank adapted to receive filtered water discharged from the drainage water tank;

[0012] a heated quenching water outlet pipe designed to direct heated quenching water coming from the coke drum plant to the closed slurry pond; and

[0013] a cooling water pipeline extending from a water tank, in particular from a middle section of said tank, to a branch pipeline for heated cooling water and connecting to a branch pipeline for heated extinguishing water, in particular at a point of connection of pipelines located above a closed sludge pool, for supplying cooling water from the water tank to the branch pipeline for heated extinguishing water for the purpose of cooling the heated extinguishing water in order to prevent steam formation in the sludge pool.

[0014] The inventors of the present invention have found that, using a conventional coke sludge processing system as described in EP 2 707 458 B1, a significant amount of water vapor and coke breeze is released into the atmosphere because water, including coke breeze, released from the coke drum into the sludge pond during or after the quenching process evaporates in the sludge pond and must be released into the environment through one or more vents.

[0015] Furthermore, the inventors have found that in a coke drum plant, the hardening or solidified coke has a temperature of up to 550°C at the beginning of the quenching process, while the quenching water supplied to the coke drum plant rises in the coke drum plant to a height of up to 60 m, the pressure of said quenching water increases to 6 bar and the temperature of the quenching water reaches 165°C. Since the coke drum plant, the coke crusher and the discharge pipeline for the heated quenching water, continuing from the coke drum plant to the closed sludge pond, form a closed system, said quenching water does not evaporate before entering the sludge pond.

[0016] Thus, the inventors have ensured that before entering the slurry pond, the heated quenching water, which also contains coke breeze, must be effectively cooled to a temperature well below 100°C at atmospheric pressure.

[0017] According to the invention, as defined in independent claim 1 of the invention formula, to solve the problem, a cooling water pipeline is used, passing from a water reservoir, in particular from the middle section of said reservoir, to a branch pipeline for heated extinguishing water and connecting with the branch pipeline for heated extinguishing water, in particular at a connection point located above a closed sludge pool, for supplying cooling water from the water reservoir to the branch pipeline for heated extinguishing water for the purpose of cooling the heated extinguishing water, so as to prevent steam formation in the sludge pool.

[0018] These measures reliably prevent vaporization in the closed sludge pond and, more importantly, reliably prevent the release of water into the atmosphere, coke breeze, and volatile organic compounds (VOCs). These effective cooling and vaporization prevention measures reliably prevent the release of hydrocarbon vapors.

[0019] With the cooling water pipeline, the volume of cooling water required to cool the heated quenching water can be set according to needs.

[0020] The system according to the invention provides for efficient cooling of solidified coke in a coke drum plant.

[0021] In addition, since the pressure in the cooling water pipe section downstream of the pipe connection point is reduced, there is no risk of damage, allowing the use of a pipe made of a less durable material and thus reducing costs,

[0022] In addition, due to a significant reduction in the temperature and pressure of the water already in the outlet pipeline for the heated extinguishing water, the fire hazard is reduced to a minimum.

[0023] According to one embodiment of the invention, the system proposed in the present invention is configured to be connected to a coke drum plant, wherein said coke drum plant is not part of the system. Accordingly, a coke crusher for crushing petroleum coke into marketable pieces of petroleum coke is adapted to be connected to the coke drum plant, in particular, via a flexible adapter, and a discharge pipeline for heated quenching water is adapted to be connected to the coke drum plant, in particular to the bottom section of said plant. In addition, a pipeline for cooling water can be provided, which is adapted to be connected to the coke drum plant.

[0024] According to another embodiment of the invention, the coke drum unit is part of the system.

[0025] According to one embodiment of the invention, the sludge pond is a closed, environmentally safe sludge pond that eliminates emissions into the environment.

[0026] According to another embodiment of the invention, the drainage water tank is a closed, environmentally safe tank that eliminates emissions into the environment.

[0027] According to another embodiment of the invention, a mixer, in particular a static mixer, is provided in a cooling water pipeline, in particular at the connection point of the cooling water pipeline with a branch pipeline for heated quenching water or at the rear of the connection point of the pipelines, but at the front of the inlet of the closed sludge pool.

[0028] The mixer is designed to mix cooling water with heated quenching water coming from the coke drum plant through a discharge pipeline for heated quenching water.

[0029] This mixer can effectively regulate the flow of cooling water added to the heated quenching water and / or regulate the resulting flow of cooled quenching water downstream of the mixer. This flow control also allows for highly effective regulation of the temperature of the resulting cooled quenching water downstream of the mixer. This ensures precise temperature and pressure control.

[0030] The mixer can be particularly adapted to the flow rate of the cooling water coming from the cooling water pipeline to achieve a predetermined temperature of the cooled quenching water leaving the mixer.

[0031] According to another embodiment of the invention, a heat exchanger is provided in the cooling water pipeline, configured to reduce the temperature of the cooling water passing through the cooling water pipeline opposite to the flow of the secondary heat exchange medium, in particular the flow of ambient air.

[0032] The said heat exchanger can reduce the cooling water temperature and, accordingly, significantly improve the cooling efficiency of the heated cooling water flowing through the heated quenching water outlet pipe. This reduces the flow of cooling water that mixes with the heated quenching water. This heat exchanger can ensure continuous cooling of the water flowing through the cooling water outlet pipe. This heat exchanger can, in particular, be a fan.

[0033] According to another embodiment of the invention, a pump for transporting water is provided in the cooling water pipeline, particularly upstream of the heat exchanger. Said pump for transporting water ensures stable operation of the cooling system.

[0034] According to another embodiment of the invention, the system further comprises a quenching water pipeline extending from the single water tank to the coke drum unit for supplying water to the coke drum unit to harden and cool the solidified petroleum coke. In particular, a quenching water pump may be provided in the quenching water pipeline.

[0035] According to another embodiment of the invention, the system further comprises a control unit. During system operation, the temperature of the solidified petroleum coke can reach 550°C, and the temperature of the water in the single water tank and the water entering the cooling water pipeline can range from 60 to 80°C.

[0036] The control unit can be configured to supply quenching water to the coke drum plant through a quenching water pipeline in which the water is at a height of up to 60 m, and the water in the coke drum plant is heated to a temperature of up to 165°C, the pressure of said quenching water is increased to 6 bar, and there is no steam generation.

[0037] The control unit may be further configured to control the conveying water pump and heat exchanger so that after the cooling water flow mixes with the heated quenching water flow in the heated quenching water outlet pipe, the water temperature is reduced to approximately 85-95°C before entering the sludge pond.

[0038] The said embodiment of the invention provides particularly effective regulation and reliably prevents steam formation in the sludge pool.

[0039] At the beginning of the quenching process / quenching stage / quenching cycle, in particular, when quenching water is supplied to the coke drum from the water tank through the quenching water pipeline, the solidified petroleum coke in the coke drum has a temperature of up to 550°C. During the said quenching process, the quenching water in the water tank and having a temperature of about 70°C is used to quench the solidified coke in the coke drum unit and, upon contact with the hot solidified coke, is heated to a temperature of 165°C, and the temperature of the solidified petroleum coke decreases accordingly.

[0040] At the final stage of the quenching process, the temperature of the solidified petroleum coke can be reduced to approximately 100°C. During the quenching process, the coke drum can be repeatedly filled with quenching water from a water tank and emptied of said water, which hardens and cools the coke in the coke drum. At the end of the quenching process, the top and bottom covers of the coke drum can be opened to discharge coke chunks from the coke drum.

[0041] According to another embodiment of the invention, the control unit is further configured to control the heat exchanger in the cooling water pipeline so that the temperature of the cooling water passing through the cooling water pipeline opposite to the flow of the secondary heat exchange medium, in particular the flow of ambient air, is reduced to approximately 50-70°C.

[0042] Thanks to the said embodiment of the invention, a very effective cooling of the quenching cooling water passing through the branch pipe for the heated quenching water is achieved.

[0043] According to a further embodiment of the invention, a drainage water outlet pipe is provided connecting the closed drainage water tank to the water reservoir.

[0044] According to another embodiment of the invention, a drainage water outlet pipeline is provided with a drainage water pump and a centrifugal separator, in particular a hydrocyclone, for separating sludge particles from drainage water coming from a drainage water tank.

[0045] According to another embodiment of the invention, a settling tank for contaminated water is provided, remote from the tank for drainage water, and also remote from the sludge basin and intended to receive sludge particles separated by a centrifugal separator.

[0046] According to another embodiment of the invention, a pipeline for feeding contaminated water is provided, continuing from the sedimentation tank for contaminated water to the dewatering bin plant.

[0047] According to another embodiment of the invention, a pump for contaminated water is provided in a sump for contaminated water, or in a pipeline for supplying contaminated water.

[0048] Water and coke breeze flow from the dewatering bin into the drainage water tank. The drainage water pump transfers the water and coke breeze from the drainage water tank through the drainage water outlet pipe to the water reservoir.

[0049] A centrifugal separator, specifically a hydrocyclone, separates sludge particles and coke breeze from the drainage water discharged from the drainage water tank and directs them to a special wastewater settling tank, which is located remotely from the drainage water tank and the sludge pond. This wastewater settling tank receives sludge particles and oil coke breezes separated from the drainage water by the centrifugal separator.

[0050] Drainage water, from which sludge particles and oil coke fines have been separated in the centrifugal separator, is sent to the water tank through the clean water supply pipeline.

[0051] According to the said embodiment of the invention / the said embodiments of the invention, it is possible to effectively remove petroleum coke fines from water downstream of the drainage water tank, to effectively and reliably separate sludge particles and petroleum coke fines from the drainage water, and the said drainage water can be used for other purposes, in particular, used as cooling water, as cutting water and as transport water for a closed coke sludge processing system.

[0052] The said centrifugal separator, in particular the said hydrocyclone, can further improve the separation of solids and can further speed up the entire technological process.

[0053] With the specified centrifugal separator and the specified sedimentation tank for contaminated water, there is no need for a separation tank such as a sedimentation tank, resulting in a reduction in the cost of the system.

[0054] The contaminated water, including sludge particles and petroleum coke fines, separated from the drainage water by a centrifugal separator and collected in the contaminated water settling tank, can be returned to the dewatering bin via a contaminated water pump through a separate contaminated water supply pipeline. The viscous mixture containing the separated sludge particles and petroleum coke fines is pumped by the contaminated water pump through the contaminated water supply pipeline to the dewatering bin, where it is effectively captured by the coke filter layer and removed.

[0055] According to a further embodiment of the invention, the single water tank comprises a settling compartment adapted to separate solid particles in the bottom section, in particular at the lowest point of the water tank.

[0056] According to another embodiment of the invention, a solids discharge pipeline is provided connecting a single water reservoir, in particular a bottom section of said reservoir, with a sedimentation tank for contaminated water.

[0057] According to another embodiment of the invention, only a single water tank is used and an additional separation tank is eliminated. Thus, the system according to the present invention significantly reduces the footprint compared to conventional coke processing systems.

[0058] The water tank serves as the water source for the entire process. The settling section of the single water tank separates solids at the bottom, specifically at the lowest point of the single water tank. From the bottom section, specifically at the lowest point of the bottom section, drainage can be performed into a sedimentation tank for contaminated water as needed, particularly at regular intervals. This two-stage drainage water purification, comprising a first stage performed by a centrifugal separator and a second stage performed in the settling section of the water tank, ensures highly effective purification of the drainage water supplied from the drainage water tank.

[0059] According to another embodiment of the invention, a slurry pipeline is provided connecting the slurry pond to a dewatering bin unit, particularly to the upper section of said unit, for pumping petroleum coke slurry to the dewatering bin unit. A slurry pump may be provided in the slurry pipeline.

[0060] According to another embodiment of the invention, a flushing pipeline is provided that branches from the cooling water pipeline and runs to a lock channel, thereby increasing the efficiency of flushing and pumping the oil coke sludge into the sludge pond. A valve may be provided in said flushing pipeline.

[0061] The said flushing pipeline ensures efficient flushing and pumping of oil coke sludge transported from coke crushers through the sluice channel.

[0062] By means of the said valve, the flushing pipeline can be opened to supply cooling water / transport water from the cooling water pipeline when necessary, and the said pipeline can be closed when there is no need to transport the oil coke sludge to the sludge pond.

[0063] According to a further embodiment of the invention, a contaminated water supply pipeline / slurry pipeline is provided, extending from the contaminated water settling tank to the dewatering bin. The slurry pipeline may be equipped with a contaminated water pump.

[0064] According to a further embodiment of the invention, the system comprises at least one of the first three components listed below, as well as a fourth component listed below:

[0065] a first gas vent pipeline extending from the upper portion of the closed sludge pond to the clean water tank, in particular to the upper portion of said tank, for venting excess gas from the sludge pond and feeding it to the clean water tank; and / or

[0066] a second gas vent line extending from the dewatering bin plant, in particular from an upper portion of said plant, to a clean water tank, in particular to an upper portion of said tank, for venting excess gas from the dewatering bin plant and feeding it to a clean water tank; and / or

[0067] a third gas venting pipeline extending from the closed drainage water tank, in particular from the upper portion of said tank, to the clean water tank, in particular to the upper portion of said tank, for venting excess gas from the closed drainage water tank and supplying it to the clean water tank; and

[0068] a fourth gas venting pipeline extending from the water tank, in particular from the upper portion of said tank, to a device for processing the vented gas, for example, to a device for burning the vented gas.

[0069] The said gas venting pipelines prevent the release of gas / steam containing coke particles into the environment. Through the said pipelines, gas / steam, which typically contains coke particles, is directed from the said sludge pond / dewatering bin / drainage water tank to a clean water tank. From the clean water tank, the gas / steam, which typically contains coke particles, is not released into the environment through one or more vents, as in other systems, but is fed to a vented gas treatment device (not shown), such as a vented gas incinerator.

[0070] The invention also relates to a method for producing commercial pieces of petroleum coke from hardened petroleum coke in a coke drum plant, in particular using the described system, comprising the steps of:

[0071] coke quenching for the purpose of hardening and cooling the solidified petroleum coke by flooding the coke drum plant with quenching water supplied through a quenching water supply pipeline from a single water tank to the coke drum plant; discharging the heated quenching water to a slurry pond through the heated quenching water pipeline for cooling;

[0072] wherein the flow of cooling water from the water tank, in particular from the upper section of said tank, is fed through the cooling water pipeline into the outlet pipeline for the heated extinguishing water, in particular at the point of connection of the cooling water pipeline with the outlet pipeline for the heated extinguishing water, located above the sludge pool, for the purpose of cooling the heated extinguishing water in the outlet pipeline for the heated extinguishing water and, accordingly, to prevent steam formation in the sludge pool.

[0073] The advantages and embodiments of the system also relate to the said method, and for the sake of brevity are not described again.

[0074] The quenching and cooling process can be repeated multiple times as needed. At this stage, the bottom cover of the coke drum can be closed, or, for example, the adapter located between the coke drum unit and the coke crusher can be closed.

[0075] Quenching water can be supplied from the water tank through the quenching water supply pipeline until a sufficient volume of quenching water is reached inside the coke drum machine. Then, the bottom cover of the coke drum can be opened to allow the heated quenching water to enter the heated quenching water outlet pipeline and be effectively cooled in the heated quenching water outlet pipeline by the flow of cooling water supplied from the water tank before entering the slurry pond, thereby preventing steam generation in the slurry pond. This process can be repeated as needed, in particular until the solidified coke inside the coke drum machine is cooled to a predetermined temperature, for example, to a temperature of approximately 100°C.

[0076] According to the first embodiment of the said method, during the operation of the system, the water in the single water tank and entering the cooling water pipeline has a temperature of about 70°C; and at the beginning of the quenching and cooling process, the solidified petroleum coke has a temperature of up to 550°C.

[0077] At the "flooding" stage, the quenching water can be supplied to the coke drum plant through the quenching water pipeline, and the water is at a height of up to 60 m in the coke drum plant, the pressure of the said cooling quenching water is increased to 6 bar, and the water is heated to a temperature of up to 165°C, while there is no steam generation.

[0078] In the drainage stage, the conveying water pump and, in particular, the heat exchanger operate in such a way that after the cooling water flow is mixed with the heated quenching water flow in the discharge pipe for the heated quenching water, the water temperature is reduced to approximately 85-95°C before entering the sludge pond.

[0079] In the drainage stage, the heat exchanger in the cooling water pipe can operate so that the temperature of the cooling water passing through the cooling water pipe opposite to the flow of the secondary heat exchange medium, in particular the flow of the ambient air, is reduced to approximately 50-70°C.

[0080] Therefore, the regulation is very effective.

[0081] The invention also relates to a method for producing commercial petroleum coke pieces from hardened petroleum coke in a coke drum plant, in particular using a system according to any of the preceding claims, implementing a water purification process, including:

[0082] supplying drainage water from a closed drainage water tank to a water reservoir via a drainage water outlet pipe connecting the closed drainage water tank to a single water reservoir, in particular to an upper section of said reservoir;

[0083] separating, using a centrifugal separator, in particular a hydrocyclone, sludge from drainage water supplied through a drainage water outlet pipe from a drainage water tank;

[0084] the entry of sludge particles separated by a centrifugal separator into a waste water settling tank remote from the drainage water tank and also remote from the sludge pond; and / or

[0085] Transferring contaminated water from a contaminated water settling tank to a dewatering bin through a contaminated water supply pipeline by means of a contaminated water pump installed on or in the contaminated water settling tank or in the contaminated water supply pipeline.

[0086] The solid particles can be separated at the bottom portion of a single water tank, in particular at the bottom point of said tank.

[0087] Solid particles may be discharged from a bottom portion of a single water tank, in particular from a lower point of said tank, through a solid particle outlet pipe into a waste water settling tank, wherein the solid particle outlet pipe connects the single water tank, in particular the bottom portion of said tank, to the waste water settling tank.

[0088] This embodiment of the invention achieves highly efficient and relatively inexpensive purification of drainage water in a drainage water tank, eliminating the need for a second reservoir, such as a settling tank, in addition to a single water tank. The volume of water required to be added to the system, such as make-up water supplied to the water tank, is significantly reduced due to the highly efficient water separation according to the present invention, thereby contributing to water conservation and cost reduction.

[0089] The invention also relates to a method for producing commercial petroleum coke pieces from hardened petroleum coke in a coke drum plant, in particular using a system according to any of the preceding claims, implementing a water purification process comprising at least one of the first three and a fourth of the following steps:

[0090] removing excess gas from the sludge pond and feeding it to a clean water tank via a first gas vent pipeline extending from an upper portion of the closed sludge pond to a clean water tank, in particular to an upper portion of said tank; and / or

[0091] removing excess gas from the dewatering bin plant and feeding it to a clean water tank via a second gas venting pipeline extending from the dewatering bin plant, in particular from an upper portion of said plant, to a clean water tank, in particular to an upper portion of said tank; and / or

[0092] removing excess gas from a closed drainage water tank and supplying it to a clean water tank by means of a third gas venting pipeline extending from the closed drainage water tank, in particular from an upper portion of said tank, to the clean water tank, in particular to an upper portion of said tank; and

[0093] removing excess gas from the clean water tank and feeding it to a waste gas treatment device, such as a waste gas combustion device, by means of a fourth gas venting pipeline extending from the clean water tank, in particular from the upper portion of said tank, to the waste gas treatment device, such as a waste gas combustion device.

[0094] The presence of the specified gas venting pipelines reliably prevents gas / steam containing coke particles from escaping into the environment. Through the specified pipelines, the gas / steam, which typically contains coke particles, is directed to a vented gas treatment device (not shown), such as a vented gas incinerator.

[0095] The coke crusher enables continuous crushing of coke during hydraulic decoking to a particle size of 100 mm. The crusher has a wide productivity range. The system and method according to the present invention can be applied to any type of coke, from sponge coke to coke nut.

[0096] The slurry pump provides continuous transportation of coke and water mixture from the slurry pond to the dewatering bin, particularly during hydraulic decoking.

[0097] The system and method according to the present invention provide full automation and require only low operating and maintenance costs. A water recirculation system is provided without directing water to the sludge treatment system, eliminating the need for additional sludge treatment and drainage.

[0098] The water from the water tank can be used for various purposes within the system and in other related systems, such as hydraulic cutting and quenching of solidified petroleum coke, as well as for dilution or flushing.

[0099] The system according to the present invention may further comprise at least one of the following components / features:

[0100] coke cutter configured to separate solidified petroleum coke from the coke drum unit;

[0101] wherein the coke cutter is a water drilling / cutting tool configured to drill a vertical channel in solidified petroleum coke in a coke drum plant and cut the solidified petroleum coke in the coke drum plant into pieces; and

[0102] a removing device, in particular a vibrating feeder, configured to remove marketable pieces of petroleum coke from a dewatering bin plant;

[0103] The water drilling / cutting tool uses water from the water tank;

[0104] wherein the corresponding coke crusher is installed under the corresponding coke drum of the coke drum plant;

[0105] moreover, coke crushers contain crushing rolls with teeth;

[0106] The coke crushers are designed to crush coke pieces cut from hardened petroleum coke by means of a coke cutter into commercial pieces of petroleum coke, the size of which is suitable for pumping petroleum coke sludge;

[0107] for each pair including a coke drum and a coke crusher, a flexible adapter is provided to connect the corresponding coke crusher with the corresponding coke drum;

[0108] wherein the dewatering bins of the dewatering bin plant comprise an upper cylindrical section and a bottom conical section, wherein the upper cylindrical section and the upper portion of the bottom conical section have filter channels, in particular internal screens, and / or the bottom portion of the lower conical section has perforations for removing accumulated water from the dewatering bin plant;

[0109] at the same time, pipelines are provided that connect the filter channels and the perforated structure with the pipeline passing to the drainage water tank;

[0110] wherein the number of coke drums corresponds to the number of dewatering bins, and one pair including a coke drum and a dewatering bin can be simultaneously connected with other elements.

[0111] The method according to the present invention may further include at least one of the following steps / cycles:

[0112] the second stage / cycle of drum decoking and dewatering, wherein the solidified petroleum coke is separated from the coke drum unit by the coke cutter, the large pieces of petroleum coke are crushed into marketable pieces of petroleum coke by the coke crusher, the marketable pieces of petroleum coke are conveyed by the conveying water, the petroleum coke sludge is sent to the closed sludge pond through the closed sluice channel, and the petroleum coke sludge is pumped from the sludge pond to the dewatering hopper unit, the marketable pieces of petroleum coke are accumulated in the dewatering hopper unit, and the filtered water and petroleum coke fines are sent to the drainage water tank remote from the sludge pond;

[0113] a third dewatering stage / cycle in which filtered water and petroleum coke fines are directed from the dewatering hopper to a drainage water tank, wherein the filtered water and petroleum coke fines are pumped from the drainage water tank to a single water tank in which the petroleum coke fines are separated from the water and collected in the bottom section of said tank, wherein the petroleum coke fines are discharged to a waste water settling tank;

[0114] The fourth stage / removal cycle in which the marketable petroleum coke pieces are removed from the dewatering bin plant.

[0115] At the same time, the system having the features according to claim 1 of the invention does not contain a cooling water pipeline, but does contain the first feature and at least one of the second and third features according to claim 8 of the invention, wherein

[0116] A closed, gas-tight system for producing commercial petroleum coke pieces from solidified petroleum coke in a coke drum plant is adapted to be connected to a coke drum plant containing solidified petroleum coke, and comprises:

[0117] a coke crusher capable of crushing petroleum coke to produce marketable pieces of petroleum coke, and adapted to be connected to a coke drum unit containing hardened petroleum coke, in particular by means of a flexible adapter;

[0118] a pipeline, in particular a closed lock channel, through which oil coke sludge flows into a closed sludge pond;

[0119] closed sludge pool;

[0120] a dewatering bunker unit adapted to receive petroleum coke sludge coming from a sludge basin and accumulate marketable pieces of petroleum coke, and also perform a filtering function to drain filtered drainage water and petroleum coke fines from the bottom section of the dewatering bunker unit;

[0121] a closed drainage water tank, remote from the sludge pond and adapted to receive filtered water and petroleum coke fines coming from the dewatering hopper plant;

[0122] The only water tank designed to receive filtered water from the drainage water tank;

[0123] Heated quenching water outlet pipe, designed to direct heated quenching water coming from the coke drum into a closed sludge pool;

[0124] Drainage water outlet pipe connecting the closed drainage water tank with the water tank;

[0125] wherein the drainage water outlet pipe is provided with a drainage water pump and a centrifugal separator, in particular a hydrocyclone, for separating sludge particles from the drainage water coming from the drainage water tank; and / or

[0126] A settling tank for contaminated water is provided, remote from the drainage water tank, and also remote from the sludge pool, and is designed to receive sludge particles separated by a centrifugal separator.

[0127] The applicant, of course, reserves the right to file a divisional application with the specified combination of features at a later stage of the procedure.

[0128] After the described claim, dependent claims may follow, which relate to at least one of the following features:

[0129] A contaminated water supply pipeline is provided, which continues from the contaminated water settling tank to the dewatering bin plant;

[0130] A waste water pump is provided, installed on or in a waste water sump or in a waste water supply pipeline.

[0131] wherein the single water reservoir comprises a settling compartment adapted to separate solid particles in the bottom section, in particular at the lowest point of said reservoir;

[0132] a solids discharge pipe is provided connecting the single water tank, in particular the bottom section of said tank, to a sedimentation tank for contaminated water; wherein

[0133] The water tank is the only water tank, eliminating the need for a second separation tank;

[0134] moreover, the feature (pipeline for cooling water) may be additionally provided (the last feature of the attached independent claim 1 of the formula of the invention), and the features of the attached claims 2-7 and 9-11 of the formula of the invention are also provided.

[0135] At the same time, the system having the features according to claim 1 of the invention does not contain a cooling water pipeline, but contains at least one of the first three features and a fourth feature according to claim 11 of the invention, wherein

[0136] A closed, gas-tight system for producing commercial petroleum coke pieces from solidified petroleum coke in a coke drum plant is adapted to be connected to a coke drum plant containing solidified petroleum coke, and comprises:

[0137] a coke crusher capable of crushing petroleum coke to produce marketable pieces of petroleum coke and adapted to be connected to a coke drum plant, in particular by means of a flexible adapter;

[0138] a pipeline, particularly a closed sluice channel, through which oil coke sludge is directed to a closed sludge pond;

[0139] closed sludge pool;

[0140] a dewatering bunker unit adapted to receive petroleum coke sludge coming from a sludge basin and accumulate marketable pieces of petroleum coke, and also performing a filtering function to drain filtered drainage water and petroleum coke fines from the bottom section of the dewatering bunker unit;

[0141] a closed drainage water tank, remote from the sludge pond and adapted to receive filtered water and petroleum coke fines coming from the dewatering hopper plant;

[0142] The only water tank adapted to receive filtered water discharged from the drainage water tank;

[0143] Heated quenching water outlet pipe, designed to direct heated quenching water coming from the coke drum plant to the closed sludge pool;

[0144] a first gas vent pipeline extending from the upper portion of the closed sludge pond to the clean water tank, in particular to the upper portion of said tank, for venting excess gas from the sludge pond and feeding it to the clean water tank; and / or

[0145] a second gas vent line extending from the dewatering bin plant, in particular from an upper portion of said plant, to a clean water tank, in particular to an upper portion of said tank, for venting excess gas from the dewatering bin plant and feeding it to a clean water tank; and / or

[0146] a third gas venting pipeline extending from the closed drainage water tank, in particular from an upper portion of said tank, to the clean water tank, in particular to an upper portion of said tank, for venting excess gas from the closed drainage water tank and supplying it to the clean water tank; and

[0147] a fourth gas venting pipeline extending from the water tank, in particular from the upper portion of said tank, to a device for processing the vented gas, for example, to a device for burning the vented gas.

[0148] The system comprises at least one of the first, second and third gas outlet pipelines and a fourth gas outlet pipeline.

[0149] The applicant, of course, reserves the right to file a divisional application with the specified combination of features at a later stage of the procedure.

[0150] After the described claim, dependent claims may follow, and an additional feature (a cooling water pipeline) may be provided (the last feature of the attached independent claim 1 of the claim), and the features of the attached claims 2-10 of the claim are also provided.

[0151] The invention is further described below using one embodiment of the invention as an example with reference to the attached drawing.

[0152] Fig. 1 is a schematic diagram of a closed gas-tight system for producing commercial pieces of petroleum coke from hardened petroleum coke in a coke drum plant according to one embodiment of the invention.

[0153] The said system is an environmentally friendly system, that is, ECHO system.

[0154] The ECHO system comprises a coke crusher C installed below a coke drum plant X and connected to the lower outlet of the coke drum plant via an adapter A.

[0155] The lower outlet of the coke crusher C is connected to the slurry basin E via a closed sluice channel D.

[0156] The branch pipe 2 for the heated quenching water continues from the coke drum plant X to the sludge pond E, wherein the mixer B is located in said branch pipe 2 for the heated quenching water, in particular, downstream of the connection point JP of the pipe 3 for cooling water with the branch pipe 2 for the heated cooling quenching water, as will be described in more detail below.

[0157] The slurry pipeline 5 continues from the slurry pond E to the dewatering hopper plant G, in particular to the upper section of the said plant, and a slurry pump F is installed in the said slurry pipeline 5.

[0158] The dewatering hopper G is connected at a lower point to a vibrating feeder H, which in turn is connected to a closed coke conveyor and / or a coke storage unit (not shown).

[0159] The drainage water supply pipeline 6 extends from the middle section of the dewatering bin G to the drainage water tank I.

[0160] The drainage water outlet pipe 7 continues between the drainage water tank I and the hydrocyclone Q, and a drainage water pump K is installed in said drainage water outlet pipe 7.

[0161] The pipeline 8 for supplying clean water continues from the hydrocyclone Q, in particular from the upper section of said hydrocyclone, to the only water tank L.

[0162] The pipeline 9 for feeding contaminated water continues from the hydrocyclone Q, in particular from the bottom section of said hydrocyclone, to the settling tank O for contaminated water.

[0163] The contaminated water pump P is installed in the contaminated water settling tank O and is connected to the contaminated water supply pipeline / slurry pipeline 11, which extends from the contaminated water settling tank O to the dewatering hopper plant G, in particular to the upper section of the said plant.

[0164] The pipeline 1 for supplying quenching water continues from the water tank L, in particular from the middle section of said tank, to the coke drum plant X. In said pipeline 1 for supplying quenching water, a pump S is installed.

[0165] The pipeline 14 supplying water for water cutting extends from the water tank L, in particular from the middle section of said tank, to the coke drum plant X. The pump R for water cutting is installed in the pipeline 14 supplying water for water cutting.

[0166] The pipeline 13 for supplying make-up water is connected to the upper section of the water tank L. The said pipeline 13 for supplying make-up water is connected to a water supply network (not shown) and has a valve V4, by means of which the pipeline 13 for supplying make-up water can be opened or closed, and the flow rate of make-up water entering the water tank L can be adjusted.

[0167] Cooling water pipe 3 connects to the middle section of water tank L and continues to the connection point JP with the outlet pipe 2 for heated quenching water. Pump M for transport water and heat exchanger / fan N are installed in said cooling water pipe 3.

[0168] The solids discharge pipe 10 is connected to the lower point of the water tank L and passes to the waste water settling tank O.

[0169] The return pipe 12 for cooling water is connected to the pipe 3 for cooling water downstream of the fan N and continues to the water tank L, in particular to the middle section of said tank. A valve V2 is installed in said return pipe 12 for cooling water, by means of which said pipe can be opened or closed, and the flow rate of water passing through said pipe can be regulated.

[0170] Valve V1 is located in cooling water line 3, specifically at the end section, immediately before the connection point JP with outlet line 2 for heated quenching water. This valve V1 can be used to open or close cooling water line 3, and also to regulate the cooling water flow rate according to needs.

[0171] Flush pipe 4 branches off from cooling water pipe 3, particularly at the end section, and connects to sluice channel D, particularly at the upper section. Valve V3 is installed in said flush pipe 4, which allows opening or closing of said flush pipe 4 and also regulates the flow rate of flush water passing through said flush pipe 4.

[0172] The first gas outlet pipeline 15a is connected to the upper section of the closed sludge pond E and continues to the clean water tank L, in particular to the upper section of said tank. Said first gas outlet pipeline 15a is designed to remove excess gas from the sludge pond E and supply it to the clean water tank L.

[0173] The second gas outlet pipeline 15b is connected to the upper section of the dewatering bin G and extends to the clean water tank L, in particular to the upper section of said tank. Said second gas outlet pipeline 15b is designed to remove excess gas from the dewatering bin G and supply it to the clean water tank L.

[0174] The third gas outlet pipe 15c is connected to the upper section of the closed drainage water tank I and extends to the clean water tank L, in particular to the upper section of said tank. Said third gas outlet pipe 15c is designed to discharge excess gas from the drainage water tank I and supply it to the clean water tank L.

[0175] Fig. 1 shows the first, second and third gas outlet pipelines 15a, 15b and 15c, wherein the first gas outlet pipeline 15a continues from the sludge pool E and is connected to separate second pipeline 15b and third gas outlet pipelines 15c, together with which it forms a common gas outlet pipeline 15, continuing to the tank L for clean water.

[0176] According to an alternative embodiment of the invention, which is not shown here, the three gas outlet pipes 15a, 15b and 15c can be formed as separate gas outlet pipes extending from the said sludge pond E / from the dewatering bin plant G / from the drainage water tank I, respectively, to the clean water tank L.

[0177] The fourth gas outlet pipe 15d is connected to the water tank L, in particular to the upper section of said tank, and continues to a device for processing the exhaust gas (not shown), for example, to a device for burning the exhaust gas. Said fourth gas outlet pipe 15d is configured to remove excess gas from the clean water tank L and supply it to a device for processing the exhaust gas (not shown), for example, to a device for burning the exhaust gas.

[0178] By means of said gas outlet pipelines 15a-15d, the emission of gas / steam containing coke particles into the environment is reliably prevented. By means of said pipelines, gas / steam, which usually contains coke particles, is directed from said sludge pond E / from the dewatering bin G / from the drainage water tank I to the clean water tank L. From the clean water tank L, the water gas / steam, which usually contains coke particles, is not discharged into the environment through one or more vents, as in other systems, but is fed to a device for processing the exhaust gas (not shown), for example, a device for burning the exhaust gas.

[0179] The coking process carried out in the X coke drum plant is generally cyclic and usually lasts for 18 to 24 hours, after which decoking is carried out.

[0180] The coking stage produces so-called petroleum coke, which settles as a solid agglomerate in coke drum unit X, while other byproducts of this process are discharged from the upper section of coke drum unit X for further processing. This process continues until coke drum unit X is filled with solid petroleum coke to a certain level.

[0181] The next step, namely the decoking step, requires the removal of said solid / hardened petroleum coke from the coke drum plant X.

[0182] In the decoking step, the agglomerated and solidified petroleum coke is cut by high-pressure cutting water supplied to the coke drum machine X from the water tank L through the pipeline 14 by the water cutting pump R.

[0183] The ECHO coke handling system shown in Fig. 1 is a reliable and safe zero-emission system. The ECHO system comprises a coke crusher C for crushing petroleum coke, and the slurry, which is a mixture of crushed coke and water, passes from the coke drum plant X through a transition pipe A, the coke crusher C, and through a closed lock channel D enters the slurry pond E, and then is directed to the dewatering bin G. Finally, the marketable coke pieces pass from the dewatering bin G through the coke discharge opening to the vibrating feeder H and from there they are sent to the coke storage area.

[0184] The ECHO system described here provides highly efficient separation of coke from water while simultaneously purifying the water for reuse in the decoking process.

[0185] The ECHO system generally carries out a cyclic process involving four steps, namely:

[0186] 1. Water cooling quenching;

[0187] 2. Coke crushing and sludge transportation;

[0188] 3. Dehydration;

[0189] 4. Unloading dry coke.

[0190] 1. Water cooling quenching

[0191] Quenching water is initially supplied by quenching water pump S from water tank L through quenching water supply line 1 to coke drum plant X, which is closed at the bottom until the quenching water in the coke drum plant reaches a height of 40 m. Hot solidified petroleum coke in the coke drum plant before quenching usually has a temperature of up to 550°C. Water, cooling the coke, is correspondingly heated and partially evaporated. The hydrostatic pressure inside the coke drum (up to a height of 60 m) can reach 6 bar, and the water temperature can reach 165°C, without steam generation.

[0192] Then, heated quenching water is discharged from the coke drum unit X through a manifold (not shown) and enters the outlet pipe 2 for heated quenching water. Cooling water from the water tank L, driven by the pump M for transport water, passes through the cooling water pipe 3 and enters the outlet pipe 2 for heated quenching water at the junction point JP of the pipes. In this case, valve V1 is in the open position.

[0193] The water in the water tank L is usually at a temperature of approximately 60 to 80°C. By using the fan N provided on the cooling water pipe 3, the temperature of the cooling water in the flow can be reduced to approximately 50 to 70°C.

[0194] Mixer B ensures a constant flow of water, and the mixer can be adjusted so that the temperature of the water in the stream exiting the outlet end of the mixer is below 100°C under atmospheric pressure, in particular, it is 85-95°C or lower, that is, the cooled quenching water entering the sludge pool E remains liquid and does not evaporate, thereby reliably preventing steam generation in the sludge pool E.

[0195] 2. Coke crushing and sludge transportation

[0196] The hydraulic coke drilling / cutting stage begins with drilling an initial hole in solidified petroleum coke (drilling / cutting equipment not shown). During the coke drilling and cutting stage in coke drum plant X, high-pressure water is supplied through hydraulic cutting pump R via hydraulic cutting water supply line 14. The cut coke pieces, falling under the force of gravity, enter coke crusher C through adapter A and are crushed to a size of no more than 100 mm. Then, the crushed coke and water mixture enters slurry pond E through a closed sluice channel. A special slurry pump F delivers the coke and water mixture from slurry pond E through slurry pipeline 5 to dewatering bin G.

[0197] Coke particles present in the mixture are captured and retained in the coke layer in the dewatering bin G, while the drain water from the dewatering bin G is discharged through the drain water supply line 6 into the drain water tank I. The slurry pump F ensures clog-free slurry transport at a coke-to-water ratio of 1:2.

[0198] The main function of the G dewatering bin is to separate coke from water by filtration.

[0199] 3. Dehydration

[0200] During the dewatering process in the dewatering hopper G, a coke layer is formed that traps the coke breeze present in the sludge. Clean water enters the drainage water tank I via the drainage water supply line 6. Specifically, the water passes through the filter elements of the upper and lower annular collectors provided in the dewatering hopper G. The dewatering hopper G typically has filter screens arranged at regular intervals along the inner wall.

[0201] As the amount of coke to form the filter layer in the dewatering bin G increases, the quality of the filtrate improves, and the drainage water passes from the dewatering bin G through the drainage water supply pipe 6 to the drainage water tank I before the dewatering step is completed.

[0202] The bottom section of the G hopper dewatering plant can be provided with a conical grate, which is connected to the lower annular dewatering line, called the main dewatering line.

[0203] In the drainage water supply line 6 between the dewatering bin G and the drainage water tank I, a hydraulic pressure is generated, causing a negative pressure in the dewatering main line, promoting the passage of water between the lump coke material.

[0204] 4. Dry coke unloading

[0205] After the coke cutting process is completed and slurry pump F stops, the drainage water flow rate gradually decreases and approaches 0 m³ / h. When water stops flowing from drainage water supply line 6, the coke can be considered dry and ready for unloading.

[0206] In the dry coke unloading stage, the coke product from the dewatering bin G is transferred through the unloading vibrating feeder H to the coke conveying system, which delivers the product to the storage facility for commercial petroleum coke (not shown).

[0207] Water purification

[0208] At all stages of the process, water purification is carried out continuously, as described below.

[0209] The drainage water from the G dewatering bin plant, especially at the beginning of the dewatering stage, contains a significant amount of coke breeze, which must be removed through further water treatment before the water can be reused.

[0210] Drainage water containing coke breeze from dewatering hopper G enters drainage water tank I. From said tank, the drainage water is pumped by drainage water pump K through hydrocyclone Q, a centrifugal separator, where it is purified and then fed to water tank L via clean water supply line 8. In said hydrocyclone Q, coke breeze and solid particles from the drainage water are separated and directed through contaminated water supply line 9 to contaminated water settling tank O.

[0211] From the contaminated water settling tank O, the sludge is pumped by the contaminated water pump P through the sludge / contaminated water supply line 11 to the dewatering bin G, in which the coke breeze and solid particles are captured and retained in the coke filter bed and effectively removed.

[0212] Water filtered / purified by hydrocyclone Q enters water tank L, which serves as the water source for the entire process. During the sedimentation stage in water tank L, solid particles still present in the water accumulate in the bottom section, specifically at the lowest point of said tank. From the bottom section of said tank, solid particles are sent at regular intervals through solids discharge pipe 10 to wastewater settling tank O.

[0213] The water from water tank L can be used as high-pressure cutting water (pipe 14), as quenching water (pipe 1), or as cooling and conveying water (pipe 3 for cooling water).

[0214] The features and embodiments of the ECHO system are explained above in the general part of this document with reference to the attached drawing and are not described again for brevity.

[0215] According to other embodiments of the invention, the coke drum plant X may comprise two or more sets of coke drums X with adapters A, coke crushers C, closed lock channels D and branch pipes 2 for heated cooling water.

[0216] According to one embodiment of the invention, the dewatering bin installation G may comprise two or more dewatering bins.

[0217] List of reference items

[0218] ECHO system

[0219] X – Coke Drum Set

[0220] A – adapter

[0221] B – mixer

[0222] C – coke crusher

[0223] D – closed lock channel

[0224] E – sludge pool

[0225] F – slurry pump

[0226] G – Dewatering bin plant

[0227] H – vibrating feeder

[0228] I – Drainage water container

[0229] K – drainage water pump

[0230] Q – hydrocyclone

[0231] O – sedimentation tank with contaminated water

[0232] P – dirty water pump

[0233] L – Clean water tank

[0234] M – pump for transport water

[0235] N – fan

[0236] R – waterjet cutting pump

[0237] S – Fire extinguishing water pump

[0238] V1, V2, V3, V4 – valves

[0239] 1 – pipeline for supplying extinguishing water

[0240] 2 – outlet pipe for heated extinguishing water

[0241] JP – Pipeline Connection Point

[0242] 3 – Cooling water pipeline

[0243] 4 – Flushing pipeline

[0244] 5 – Slurry pipeline

[0245] 6 – drainage water supply pipeline

[0246] 7 – Drainage water outlet pipe

[0247] 8 – Clean water supply pipeline

[0248] 9 – pipeline for supplying contaminated water

[0249] 10 – Solid Particle Discharge Pipe

[0250] 11 – Sludge pipeline / contaminated water supply pipeline

[0251] 12 – Return pipe for cooling water

[0252] 13 – pipeline for supplying make-up water

[0253] 14 – Water supply pipeline for waterjet cutting

[0254] 15,15a-15d – gas outlet pipelines.

Claims

1. A closed, gas-tight system for producing commercial petroleum coke pieces from solidified petroleum coke in a coke drum unit, adapted for connection to a coke drum unit (X) containing solidified petroleum coke, and comprising: a coke crusher (C) that crushes petroleum coke to obtain marketable pieces of petroleum coke and is adapted for connection to a coke drum unit (X), in particular, by means of a flexible adapter (A); a pipeline, in particular a closed lock channel (D), through which oil coke sludge is directed to a closed sludge pond; closed sludge pond (E); a dewatering bunker unit (G) adapted to receive petroleum coke sludge coming from a sludge basin (E) and to accumulate marketable pieces of petroleum coke, and also performing a filtering function for removing filtered drainage water and petroleum coke fines from the bottom section of the dewatering bunker unit; a closed tank (I) for drainage water, remote from the sludge basin (E) and adapted to receive filtered water and petroleum coke fines coming from the dewatering hopper plant (G); a single water tank (L) adapted to receive filtered water discharged from a drainage water tank (I); a discharge pipeline (2) for heated quenching water, designed to direct heated quenching water coming from the coke drum plant (X) into a closed sludge pool (E); and a cooling water pipeline (3) extending from the water reservoir (L), in particular from the middle section of said reservoir, to the branch pipeline (2) for the heated extinguishing water and connecting with the branch pipeline (2) for the heated extinguishing water, in particular at the point (JP) of connection of the pipelines, located above the closed sludge basin (E), for feeding cooling water from the water reservoir (L) to the branch pipeline (2) for the heated extinguishing water for the purpose of cooling the heated extinguishing water in order to prevent steam formation in the sludge basin (E).

2. The system according to paragraph 1, in which the sludge pond (E) is an environmentally safe closed sludge pond (E) that eliminates emissions into the environment; and / or The tank (I) for drainage water is an environmentally safe closed tank (I) for drainage water, which prevents emissions into the environment.

3. The system according to paragraph 1 or 2, in which a mixer (B), in particular a static mixer, is provided in the pipeline (3) for cooling water, in particular at the connection point (JP) of the pipeline (3) for cooling water with the branch pipeline (2) for heated quenching water or at the rear of the connection point (JP) of the pipelines, but at the front of the inlet opening of the closed sludge basin (E).

4. A system according to any of the preceding claims, in which in the pipeline (3) for cooling water, a heat exchanger (N) is provided, designed with the possibility of reducing the temperature of the cooling water passing through the pipeline (3) for cooling water opposite to the flow of the secondary heat exchange medium, in particular the flow of ambient air.

5. A system according to any of the preceding paragraphs, in which a pump (M) for transport water is provided in the pipeline (3) for cooling water, in particular at the front of the heat exchanger (N).

6. A system according to any of the preceding paragraphs, further comprising a quenching water supply pipeline (1) extending from the single water tank (L) to the coke drum unit (X) for filling the coke drum unit (X) with water for the purpose of hardening and cooling the solidified petroleum coke; moreover, a pump (S) is installed in the pipeline (1) for supplying extinguishing water.

7. A system according to any of the preceding paragraphs, additionally containing a control unit, in this case, when the system is operating, the temperature of the hardened petroleum coke reaches 550°C, and the temperature of the water in the single water tank (L) and entering the pipeline (3) for cooling water can range from 60 to 80°C; wherein the control unit is configured to supply quenching water to the coke drum unit (X) via a quenching water pipeline in which the water is at a height of up to 60 m, wherein the water in the coke drum unit (X) is heated to a temperature of up to 165°C, the pressure of said quenching water increases to 6 bar, while there is no steam formation; wherein the control unit is further configured to control the pump (M) for the transport water and the heat exchanger (N) in such a way that after mixing the flow of cooling water with the flow of heated quenching water in the outlet pipe (2) for the heated quenching water, the temperature of the water is reduced to approximately 85-95°C before entering the sludge pool (E); wherein the control unit is, in particular, further configured to regulate the heat exchanger (N) in the pipeline (3) for cooling water in such a way that the temperature of the cooling water passing through the pipeline (3) for cooling water opposite to the flow of the secondary heat exchange medium, in particular the flow of ambient air, is reduced to approximately 50-70°C.

8. A system according to any of the preceding paragraphs, in which a drain pipe (7) is provided for drainage water, connecting a closed container (I) for drainage water with a water reservoir (L); wherein the drainage water outlet pipe (7) is provided with a drainage water pump (P) and a centrifugal separator, in particular a hydrocyclone (Q), for separating sludge particles from the drainage water coming from the drainage water tank (I); and / or a settling tank (O) for contaminated water is provided, remote from the tank (I) for drainage water, and also remote from the sludge basin (E) and designed to receive sludge particles separated by a centrifugal separator (Q); and / or a waste water / slurry pipeline (11) is provided, continuing from the waste water settling tank (O) to the dewatering bin plant (G); and / or a pump (P) for contaminated water is provided, installed on or in a sump (O) for contaminated water, or in a pipeline (11) for supplying contaminated water.

9. The system according to paragraph 8, in which a single water tank (L) comprises a settling compartment adapted to separate solid particles in a bottom section, in particular at a low point of said tank; and / or a discharge pipeline (10) for solid particles is provided, connecting the only water reservoir (L), in particular the bottom section of said reservoir, with a settling tank (O) for contaminated water; wherein The water tank (L) is the only water tank (L), eliminating the need for a second separation tank.

10. A system according to any of the preceding paragraphs, further containing at least one of the following components: a slurry pipeline (5) connecting the slurry pond (E) to the dewatering bin plant (G), in particular to the upper section of said plant, for pumping oil coke slurry to the dewatering bin plant (G); and / or a slurry pump (F) provided in the slurry pipeline (5); and a flushing pipeline (4) branching off from the pipeline (3) for cooling water and passing to the lock channel (D) to increase the efficiency of flushing and pumping the oil coke sludge into the sludge basin (E); moreover, a valve (V3) is provided in the said flushing pipeline (4).

11. A system according to any of the preceding paragraphs, containing one or more of the following components: a first gas venting pipeline (15a) extending from the upper portion of the closed sludge pond (E) to the clean water tank (L), in particular to the upper portion of said tank, for venting excess gas from the sludge pond (E) and for feeding it to the clean water tank (L); and / or a second gas vent pipe (15b) extending from the dewatering bin plant (G), in particular from the upper portion of said plant, to the clean water tank (L), in particular to the upper portion of said tank, for venting excess gas from the dewatering bin plant (G) and for feeding it to the clean water tank (L); and / or a third gas outlet pipe (15c) extending from the closed container (I) for drainage water, in particular from the upper portion of said container, to the tank (L) for clean water, in particular to the upper portion of said tank, for removing excess gas from the closed container (I) for drainage water and for feeding into the tank (L) for clean water; and a fourth gas outlet pipe (15d) extending from the water reservoir (L), in particular from the upper section of said reservoir, to a device for treating the diverted gas, for example to a device for burning the diverted gas.

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