Method for processing oil sediment

专利摘要:
METHOD OF TREATING MA SUCTION, containing under fermentation tank, treating it with iron chloride and subsequent dehydration and oil separation on a belt press filter, this is because, in order to increase the efficiency of oil separation from water, before serving to the belt press the filter sludge is directed to a tank with structure-improving additives, for example, fly ash, additional ferric chloride and polyelectrolyte are introduced after preliminary dehydration at the end of the feed zone, oil separation is carried out from the zone Absorption of a belt press filter, and part of the dried sludge from the press filter is returned to the tank with structure-improving additives.
公开号:SU1124881A3
申请号:SU823408249
申请日:1982-03-24
公开日:1984-11-15
发明作者:Перхталер Хайнц；Штефу Стаматиос
申请人:Машиненфабрик Андритц Аг (Фирма)；
IPC主号:

专利说明:

The invention relates to a method for treating sludge and can be used to filter out water and oil from a slurry slurry and to obtain a dry filter cake suitable for further processing. A known method for processing oil sludge is that an auxiliary filtering agent is added to the filtering device before it is fed to the filtering device, and then poly-electrolyte U However, the method has a low efficiency of oil separation from water. The closest to the proposed technical essence and the achieved result is a method of processing oil sludge, which consists in feeding it into a mixing tank, processing it with ferric chloride and subsequent dehydration and oil separation on a belt press filter C. The disadvantage of the known method is that slurry separation efficiency is low on separate components. The purpose of the invention is to increase the efficiency of the separation of oil from water. The goal is achieved by the fact that according to the method of processing oil sludge, consisting in feeding it into a tank for mixing, processing it with ferric chloride and subsequent dehydration and oil separation on a belt press filter, first feed on a belt press filter sludge is sent to a container with structure-improving additives, for example, fly ash, additionally in d) ferric chloride and polyelectrolyte after preliminary dehydration at the end of the feed zone, oil separation is carried out from the zone of press-molding the press filter, and a part of the dewatered sludge from the press filter is returned to the tank with structure-improving materials {AND additives. The drawing shows an installation diagram for carrying out the proposed method. The installation consists of a slurry tank 1 with a feed inlet with stirrers 3 with drives 4. In the lower part of the tank is placed a pump 5 for pumping sludge through the supply pipe 6 in the tank for 7 s, with stirrers 8, the tanks 7 are equipped with a drain outlet 9. the feed pipelines 10 are provided in the tank 7 of structure-improving substances. The structure-improving substances come from the bunker 11 through the metering 12 and transporting device 13. The drain 9 is connected to the pipeline 14 with the regulator 15. The station 16 for dissolving flocculating agents has a tank 17 with agitators. From the supply tank 18, a flocking agent, through pipe 19, is supplied by a pump 20 to the station 16 for dissolving the flocking agent. By pump 21 through supply line 22, the flocking agent is pumped into supply line 14 and then into receiving device 23 to a belt press filter 24. Press filter 24 has two cH-ia: the upper 25 and the lower 26, which together run through the wedge-shaped approach 27 and press 28, the belt press filter 24 is equipped with a spraying device 29, by means of which the iron chloride feed from the iron chloride supplying tank 30 is fed to the belt press filter 24 by the dosing pump 31, the wedge shaped approach section 27 has bath 32 for discharge of water. Belt sieves 25 and 26 pass through repleni bath 33 and 34. In the deepest place each of them has nozzles 35 connected to pipe 36 for removing oil and bath 37, and the filtrate from bath 32 is removed by nozzles 38 connected to pipe 39 and from a bath 40. The water pipe 41 is connected not only to the metering pump 31, but is also connected to the spray device 29. The nozzles 42 of the device for cleaning the upper 25 and bottom 26 sieves are also connected to the water pipe 41. The baths 37 and 40 are connected to the pump 43. From the belt press filter 24, the sediment 44 is removed through the tool 45 to the warehouse 46, and part of it is returned through the pipe 47 to the tank 7 with agitators. Moreover, the supplied sludge is used to stabilize a suspension of l saving fly ash. The method of treating the oil sludge is carried out as follows. The initial oil sludge is fed to the mixing tank and then to the tank 7 with the agitators 8, where it is mixed with the structure-improving additives coming from the bucket 11 through the pipeline 10, and as an example, fly ash, chips, sawdust, fiber; residues of agricultural production, low-value cellulose and other materials. Next, a mixture of oil sludge and structure-improving additives enters the receiving device 23 of the belt press filter 24. At the belt press filter .24, the initial sludge is separated into oil, water, and sediment. At the same time, sediment 4 is removed to storage 46, and part of it is returned through conduit 47 to reservoir 7 with structure-improving additives. Oil separation is carried out from the press zone of the belt press filter 24 through pipes 35, pipes 36 and bath 37. Water separation is carried out through pipes 28 and pipe 39 into bath 40. After preliminary dehydration, chloride and polyethylene electrolyte are introduced from the tank 30 at the end of dewatering. .
Thus, due to the introduction of structure-improving additives,. such as, for example, fly ash, increased resistance to shear sediment on a belt press filter and reduced filter resistance, increased mechanical strength of a belt press on a belt press filter. The return of part of the dewatered sludge from the press filter to a container with structure-improving additives helps stabilize the suspension and save volatile ash, and the addition of polyelectrolyte with iron chloride provides an increased sludge dewatering capacity.
As a result of supplying the filter drain to the dewatering machine, the oil and water are drained separately, which results in significant savings (water flows in a drainage area under low pressure, while oil requires a higher pressure for its separation and therefore only pressing).

权利要求:
Claims (1)
[1]
The METHOD FOR OIL SUSTAINS PROCESSING, which consists in feeding it to a mixing tank, treating it with iron chloride and subsequent dehydration and oil separation on a belt press filter, characterized in that, in order to increase the efficiency of oil separation from water, before being fed to the belt press filter, the sludge is sent to a container with structural improving additives, for example fly ash, iron chloride and polyelectrolyte are additionally introduced after preliminary dehydration at the end of the feed zone, oil separation is carried out yayut the nip belt filter press and part dewatered sludge from the filter press is returned to the container with strukturouluchshayuschimi additives.
, SU _(and > 1124881

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同族专利:

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公开号 | 公开日

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DE3209320C2|1985-11-07|

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AT376957B|1985-01-25|

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GB2095573A|1982-10-06|

---

NO820997L|1982-09-27|

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ATA140381A|1984-06-15|

---

MX160781A|1990-05-14|

---

US4812234A|1989-03-14|

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NO159787B|1988-10-31|

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FR2502609A1|1982-10-01|

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FR2502609B1|1989-01-20|

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CA1182419A|1985-02-12|

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DE3209320A1|1982-11-04|

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NO159787C|1989-02-08|

---

GB2095573B|1985-03-20|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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AT0140381A|AT376957B|1981-03-26|1981-03-26|METHOD FOR SEPARATING WATER AND OIL IN OIL SLUDGE TREATMENT AND DEVICE FOR CARRYING OUT THE METHOD|

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