CN204643991U - A kind of oil refining delayed coking oil-containing sewage treatment system - Google Patents

A kind of oil refining delayed coking oil-containing sewage treatment system Download PDF

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CN204643991U
CN204643991U CN201520308628.8U CN201520308628U CN204643991U CN 204643991 U CN204643991 U CN 204643991U CN 201520308628 U CN201520308628 U CN 201520308628U CN 204643991 U CN204643991 U CN 204643991U
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water
oil
outlet
pipeline
coke powder
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CN201520308628.8U
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孙洪桥
杨欣燃
党威
吴昊
白佳佳
刘发展
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Xi'an Rui Lan Green Technology Co Ltd
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Xi'an Rui Lan Green Technology Co Ltd
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Abstract

A kind of oil refining delayed coking of the utility model oil-containing sewage treatment system, belongs to technical field of chemical.Comprise homogenization buffer tank, coke powder strainer, rapid filter, water-and-oil separator and process water storage tank; Homogenization buffer tank is with oil slick outlet, mud discharging mouth and liquid outlet; The liquid outlet of homogenization buffer tank is connected by the water-in of pipeline with coke powder strainer, the water outlet of coke powder strainer is connected with rapid filter by pipeline, the water outlet of rapid filter is connected with the water-in of water-and-oil separator by pipeline, the water outlet of water-and-oil separator is connected by the water-in of pipeline with process water storage tank, process water storage tank is also provided with water port and back-flushing outlet.Native system velocity of separation is fast, and filtration velocity can reach 40m 3/ m 2* h, disengaging time is short, and separation accuracy is high, and system footprint area is little, simple to operate, reliable, easy to maintenance, and high by this systematic position oil quality out, water content is low, can recycle oil product.

Description

A kind of oil refining delayed coking oil-containing sewage treatment system
Technical field
The utility model belongs to technical field of chemical, is specifically related to a kind of oil refining delayed coking oil-containing sewage treatment system.
Background technology
Delayed coker fractionator tower top cuts water due to high temperature, under the effect such as lift pump shearing, all produces the waste water containing oil in water emulsion.Delayed coking unit separation column oil-containing sour water output is 10m at present 3/ h, waste water is mainly containing coke powder, ammonia nitrogen, hydrogen sulfide, volatile phenol, raw gasline etc., and ph is alkalescence about about 9, and waste water is characterized as height oil-containing, height emulsification, high ammonia nitrogen, high hydrogen sulfide; It is 10m at present that 2# distills oily(waste)water output 3/ h, mainly containing ammonia nitrogen, hydrogen sulfide, volatile phenol, vapour, diesel oil etc., ph is alkalescence about 9-10, and waste water is characterized as high oil-containing, height emulsification.
The technique of the existing process sour water of plant area is for entering 3000m 3submarine discharge head tank to carry out profit settlement separate, size Stripping Desulfuration is directly entered in water outlet, and process advantage is that technique is simple, and easy to operate, equipment working cost is low.But gravity settling is for the comparatively serious sour water of water body emulsification, and effect of settling can reduce, constantly can increase by settlement separate oil in water emulsion, cause the useful volume of tank body to reduce gradually.Coke powder density in water body and oil relatively, cannot well be separated by gravity settling, make to contain coke powder in isolated oil, directly can not enter hypomere oil product complete processing.Can not enter stripping tower by settlement separate oil in water emulsion and coke powder in water body, directly affect the smooth running of stripping tower, the annual increased frequency purging stripping tower.
Also there is not this coking oily(waste)water of technical finesse reliable and applied widely at present, traditional dosing intermediate processing need research and develop specific or efficient medicament, and processing cost is high, and disengaging time is oversize, treatment effect is unstable, and the mud produced, sump oil form secondary pollution.The treatment facility being principle with gravity settling or hydrocyclone focusing powder density and the solid thing treatment effect extreme difference of oil that oil is close and coke powder is formed with oil, disengaging time is long, and practical application difficulty is very large.Feeling simply helpless to delayed coking oily(waste)water at present in part refinery, part emulsification can only be taked seriously to dilute laggard Sewage treatment systems with a large amount of middle water, cause Sewage treatment systems abnormal.
Utility model content
In order to overcome the defect that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of coal-seam gas oil-containing sewage treatment system, this system architecture is arranged rationally, pressure low, processing ease when running, easy to maintenance, utilize the coal-seam gas oily(waste)water after native system process, effluent quality can reach the existing biochemical intake design requirement of plant area completely.
The utility model is achieved through the following technical solutions:
A kind of oil refining delayed coking oil-containing sewage treatment system, comprises homogenization buffer tank, coke powder strainer, rapid filter, water-and-oil separator and process water storage tank; Homogenization buffer tank is provided with oil slick outlet, mud discharging mouth and liquid outlet; The liquid outlet of homogenization buffer tank is connected by the water-in of pipeline with coke powder strainer, the water outlet of coke powder strainer is connected with rapid filter by pipeline, the water outlet of rapid filter is connected with the water-in of water-and-oil separator by pipeline, the water outlet of water-and-oil separator is connected by the water-in of pipeline with process water storage tank, process water storage tank is also provided with water port and back-flushing outlet.
Above coke powder strainer, be provided with the coke powder storage tank of Auto-drainage, oil extraction and deslagging function, coke powder strainer and rapid filter are equipped with back-flushing outlet, two back-flushings outlets are by being connected to coke powder storage tank after ducts converge.
The oil slick outlet of homogenization buffer tank is circumscribed with sump oil storage tank by pipeline, and mud discharging mouth is by the external mud collecting tank of pipeline.
The water port of coke powder storage tank is connected to homogenization buffer tank by pipeline, and oil discharge outlet is connected to sump oil storage tank by pipeline, and slag-drip opening is connected to mud collecting tank by pipeline.
Described water-and-oil separator is secondary water-and-oil separator, be made up of GOS-A water-and-oil separator and GOS-B water-and-oil separator, the water outlet of rapid filter is connected to the water-in of GOS-A water-and-oil separator, the water outlet of GOS-A water-and-oil separator is connected to the water-in of GOS-B water-and-oil separator, and the water outlet of GOS-B water-and-oil separator is connected with process water storage tank by pipeline.
The back-flushing exit of process water storage tank is provided with recoil water pump, and the water side of recoil water pump is divided into two-way, and a road is connected with GOS-A water-and-oil separator, and another road is connected with rapid filter; GOS-A water-and-oil separator is provided with back-flushing outlet, and the outlet of this back-flushing is connected with homogenization buffer tank by pipeline.
GOS-A water-and-oil separator and GOS-B water-and-oil separator are equipped with oil discharge outlet, and oil discharge outlet is connected to sump oil storage tank by pipeline.
Described coke powder strainer, rapid filter and GOS-A water-and-oil separator all adopt the equipment with automatic on-line backwashing function.
Homogenization buffer tank adopts tank or buffering pond in perpendicular stream slurry tank, Horizontal sedimentation tank, tank.
The pipeline of homogenization buffer tank and coke powder strainer is also provided with lifting water pump.
Compared with prior art, the utility model has following useful technique effect:
Oil refining delayed coking oil-containing sewage treatment system of the present utility model, comprise the homogenization buffer tank, coke powder strainer, rapid filter, water-and-oil separator and the process water storage tank that are connected successively by pipeline, homogenization buffer tank can regulating water quality, the water yield, can large portion's oil slick and coke powder in sharp separation water, the normal water inlet of guarantee system and smooth running, can the snubber assembly of large portion's oil slick and coke powder in sharp separation water, make water outlet oil-contg≤3000mg/L, coke powder content≤500mg/L, the sewage removing large portion oil slick and coke powder in homogenization buffer tank by Cemented filling to coke powder strainer, rapid filter, remove coke powder, suspended substance and 20% oily substance, make water outlet coke powder, suspension content≤5mg/L, water after filtering enters water-and-oil separator again, sub-argument goes out the dispersed oil in sewage, oil in water emulsion, make final outflow water oil-contg≤200mg/L, a whole set for the treatment of system does not need to add any chemical agent, also without the need to taking any auxiliary break milk separation measure, wetting coalescence principle is utilized to reach dispersed oil in segregation lag coking oily(waste)water with the form of filtering, the object of oil in water emulsion.This systematic position speed is fast, and filtration velocity can reach 40m 3/ m 2* h, disengaging time is short, and separation accuracy is high, and system footprint area is little, simple to operate, reliable, easy to maintenance, and high by this systematic position oil quality out, water content is low, can recycle oil product.
Further, water-and-oil separator of the present utility model is secondary water-and-oil separator, is made up of, improves oil and water separation capability GOS-A water-and-oil separator and GOS-B water-and-oil separator.The oil slick outlet of homogenization buffer tank is circumscribed with sump oil storage tank by pipeline, and GOS-A water-and-oil separator and GOS-B water-and-oil separator are equipped with oil discharge outlet, and oil discharge outlet is connected to sump oil storage tank by pipeline.Recycle after isolated oil can being collected, reach the object of efficent use of resources.
Further, coke powder strainer of the present utility model, rapid filter, GOS-A water-and-oil separator is on-line automatic back-purge system, recoil is controlled automatically by PLC system, when the pressure difference of equipment reaches set(ting)value, the water outlet of process water storage tank or air is utilized to carry out online backflushing to equipment, coke powder strainer, rapid filter recoil water outlet Residual contamination thing enters coke powder storage tank by pipeline, GOS-A water-and-oil separator recoil water outlet then enters in homogenization buffer tank by pipeline again, sedimentation again, continue to enter rear end after separation to process, thus the utility model is without the need to shutting down, just can realize the online backflushing process to equipment.
Further, the pipeline that the utility model is connected with coke powder strainer at homogenization buffer tank is provided with lifting water pump, oil-containing in homogenization buffer tank, containing coke powder sewage by promote water pump squeeze into coke powder strainer, the operating pressure of water pump is low, only need 0.1 ~ 0.3Mpa, the filtration resistance of system is little, energy-saving and cost-reducing.
Accompanying drawing explanation
Fig. 1 is oil refining delayed coking oil-containing sewage treatment system structured flowchart of the present utility model.
Wherein: 1 is homogenization buffer tank; 2 is coke powder strainer; 3 is rapid filter; 4 is GOS-A water-and-oil separator; 5 is GOS-B water-and-oil separator; 6 is process water storage tank; 7 is recoil water pump; 8 is coke powder storage tank; 9 is sump oil storage tank; 10 is mud collecting tank.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
See Fig. 1, oil refining delayed coking oil-containing sewage treatment system of the present utility model, comprises homogenization buffer tank 1, coke powder strainer 2, rapid filter 3, water-and-oil separator and process water storage tank 6; Homogenization buffer tank 1 is with oil slick outlet, mud discharging mouth and liquid outlet; The liquid outlet of homogenization buffer tank 1 is connected by the water-in of pipeline with coke powder strainer 2, and the pipeline of homogenization buffer tank 1 and coke powder strainer 2 can also arrange lifting water pump.Coke powder strainer 2 water outlet is connected by the water-in of pipeline with rapid filter 3.Water-and-oil separator is secondary water-and-oil separator, be made up of GOS-A water-and-oil separator 4 and GOS-B water-and-oil separator 5, the water outlet of rapid filter 3 is connected to the water-in of GOS-A water-and-oil separator 4, the water outlet of GOS-A water-and-oil separator 4 is connected to the water-in of GOS-B water-and-oil separator 5, and the water outlet of GOS-B water-and-oil separator 5 is connected with process water storage tank 6 by pipeline.Process water storage tank 6 water outlet installs T-valve, and Yi Lushui enters submarine discharge, and another road connects the backwash water being used for GOS-A water-and-oil separator 4; GOS-A water-and-oil separator 4, GOS-B water-and-oil separator 5 is also provided with automatic oil draining mouth; Above coke powder strainer 2, be provided with the coke powder storage tank 8 of Auto-drainage, oil extraction and deslagging function, coke powder strainer 2 and rapid filter 3 are equipped with back-flushing outlet, two back-flushings outlets are by being connected to coke powder storage tank 8 after ducts converge.
The oil slick outlet of homogenization buffer tank 1 is circumscribed with sump oil storage tank 9 by pipeline, and mud discharging mouth is by the external mud collecting tank 10 of pipeline.Homogenization buffer tank 1 adopts tank or buffering pond in perpendicular stream slurry tank, Horizontal sedimentation tank, tank, and the size of homogenization buffer tank and the position of inlet and outlet pipe lines can set particular location according to the size of actual oleaginousness and coke powder content.The water port of coke powder storage tank 8 is connected to homogenization buffer tank 1 by pipeline, and oil discharge outlet is connected to sump oil storage tank 9 by pipeline, and slag-drip opening is connected to mud collecting tank 10 by pipeline.
The back-flushing exit of process water storage tank 6 is provided with recoil water pump 7, and the water side of recoil water pump 7 is divided into two-way, and a road is connected with GOS-A water-and-oil separator 4, and another road is connected with rapid filter 3; GOS-A water-and-oil separator 4 is provided with back-flushing outlet, and the outlet of this back-flushing is connected with homogenization buffer tank 1 by pipeline.GOS-A water-and-oil separator 4 and GOS-B water-and-oil separator 5 are equipped with oil discharge outlet, and oil discharge outlet is connected to sump oil storage tank 9 by pipeline.
Preferably, described coke powder strainer 2, rapid filter 3, GOS-A water-and-oil separator 4 are on-line automatic backwashing equipment, and this on-line automatic backwashing equipment enters coke powder storage tank by drainage pipeline coke powder strainer, rapid filter recoil water outlet Residual contamination thing by pipeline, GOS-A water-and-oil separator recoil water outlet then enters coke powder strainer in homogenization buffer tank again by pipeline, rapid filter recoil water outlet Residual contamination thing enters coke powder storage tank by pipeline, and GOS-A water-and-oil separator recoil water outlet is then connected with homogenization buffer device 1 by pipeline.Recoil is controlled automatically by PLC system; when the pressure difference of equipment reaches set(ting)value; process water storage tank water outlet or air is utilized to recoil to this strainer; recoil water outlet Residual contamination thing enters in homogenization buffer device by pipeline again; continue to enter rear end after sedimentation again, separation to process; thus the utility model is without the need to shutting down, and just can realize the online backflushing process to equipment.
Illustrate in conjunction with example:
Certain petrochemical plant delayed coking oily(waste)water, oil-contg ≈ 10000mg/L.First delayed coking oily(waste)water enters in tank by the pipeline of homogenization buffer tank middle and upper part, stops 4 hours, makes oleaginousness drop to 3000mg/L.Other gravity settling facilities such as tank or buffering pond in homogenization buffer tank perpendicular stream slurry tank, Horizontal sedimentation tank, tank.
Water outlet enters lifting water pump by the pipeline in the middle part of surge tank, hydraulic pressure 0.1 ~ 0.3MPa, water is squeezed into coke powder strainer and rapid filter, removes coke powder, suspended substance in water, makes water outlet coke powder, suspension content is less than 5mg/L.When filter differential pressures reaches (set(ting)value), with process water storage tank water outlet, strainer is recoiled, recoil and to be undertaken by PLC automatic control.Recoil water outlet enters coke powder storage tank middle and lower part by pipeline.Sewage through filter removal coke powder, suspended substance enters water-and-oil separator by connecting tube again, and be separated suspension oil, dispersed oil and oil in water emulsion in water outlet, water outlet oil-containing is less than 200mg/L; Isolated oil is collected into oil slick sump oil storage tank by the automatic oil draining valve at separator top, regularly transports outward; Water after purification enters submarine discharge process.
For a person skilled in the art, according to technical scheme described above, other various corresponding change and distortion can be made, and all these change and distortion all should belong within this scope being suitable for the protection of novel claim.

Claims (10)

1. an oil refining delayed coking oil-containing sewage treatment system, it is characterized in that, comprise homogenization buffer tank (1), coke powder strainer (2), rapid filter (3), water-and-oil separator and process water storage tank (6); Homogenization buffer tank (1) is provided with oil slick outlet, mud discharging mouth and liquid outlet; The liquid outlet of homogenization buffer tank (1) is connected by the water-in of pipeline with coke powder strainer (2), the water outlet of coke powder strainer (2) is connected with rapid filter (3) by pipeline, the water outlet of rapid filter (3) is connected with the water-in of water-and-oil separator by pipeline, the water outlet of water-and-oil separator is connected by the water-in of pipeline with process water storage tank (6), process water storage tank (6) is also provided with water port and back-flushing outlet.
2. a kind of oil refining delayed coking oil-containing sewage treatment system according to claim 1, it is characterized in that, the coke powder storage tank (8) of Auto-drainage, oil extraction and deslagging function is provided with in the top of coke powder strainer (2), coke powder strainer (2) and rapid filter (3) are equipped with back-flushing outlet, and two back-flushing outlets are by being connected to coke powder storage tank (8) after ducts converge.
3. a kind of oil refining delayed coking oil-containing sewage treatment system according to claim 2, it is characterized in that, the oil slick outlet of homogenization buffer tank (1) is circumscribed with sump oil storage tank (9) by pipeline, and mud discharging mouth is by the external mud collecting tank (10) of pipeline.
4. a kind of oil refining delayed coking oil-containing sewage treatment system according to claim 3, it is characterized in that, the water port of coke powder storage tank (8) is connected to homogenization buffer tank (1) by pipeline, oil discharge outlet is connected to sump oil storage tank (9) by pipeline, and slag-drip opening is connected to mud collecting tank (10) by pipeline.
5. a kind of oil refining delayed coking oil-containing sewage treatment system according to claim 3, it is characterized in that, described water-and-oil separator is secondary water-and-oil separator, be made up of GOS-A water-and-oil separator (4) and GOS-B water-and-oil separator (5), the water outlet of rapid filter (3) is connected to the water-in of GOS-A water-and-oil separator (4), the water outlet of GOS-A water-and-oil separator (4) is connected to the water-in of GOS-B water-and-oil separator (5), the water outlet of GOS-B water-and-oil separator (5) is connected with process water storage tank (6) by pipeline.
6. a kind of oil refining delayed coking oil-containing sewage treatment system according to claim 5, it is characterized in that, the back-flushing exit of process water storage tank (6) is provided with recoil water pump (7), the water side of recoil water pump (7) is divided into two-way, one tunnel is connected with GOS-A water-and-oil separator (4), and another road is connected with rapid filter (3); GOS-A water-and-oil separator (4) is provided with back-flushing outlet, and the outlet of this back-flushing is connected with homogenization buffer tank (1) by pipeline.
7. a kind of oil refining delayed coking oil-containing sewage treatment system according to claim 5, it is characterized in that, GOS-A water-and-oil separator (4) and GOS-B water-and-oil separator (5) are equipped with oil discharge outlet, and oil discharge outlet is connected to sump oil storage tank (9) by pipeline.
8. a kind of oil refining delayed coking oil-containing sewage treatment system according to claim 5, it is characterized in that, described coke powder strainer (2), rapid filter (3) and GOS-A water-and-oil separator (4) all adopt the equipment with automatic on-line backwashing function.
9. according to a kind of oil refining delayed coking oil-containing sewage treatment system in claim 1 ~ 8 described in any one, it is characterized in that, homogenization buffer tank (1) adopts tank or buffering pond in perpendicular stream slurry tank, Horizontal sedimentation tank, tank.
10. according to a kind of oil refining delayed coking oil-containing sewage treatment system in claim 1 ~ 8 described in any one, it is characterized in that, the pipeline of homogenization buffer tank (1) and coke powder strainer (2) is also provided with lifting water pump.
CN201520308628.8U 2015-05-13 2015-05-13 A kind of oil refining delayed coking oil-containing sewage treatment system Expired - Fee Related CN204643991U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107827264A (en) * 2017-12-05 2018-03-23 上海蓝科石化环保科技股份有限公司 A kind of sewage purification processing system and method
CN108760560A (en) * 2018-05-21 2018-11-06 山东京博石油化工有限公司 A kind of method and device detecting the coke powder content in delayed coking acid water

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107827264A (en) * 2017-12-05 2018-03-23 上海蓝科石化环保科技股份有限公司 A kind of sewage purification processing system and method
CN108760560A (en) * 2018-05-21 2018-11-06 山东京博石油化工有限公司 A kind of method and device detecting the coke powder content in delayed coking acid water

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