CN1067445A - Technology for clarifying fuel oil - Google Patents

Abstract

A kind of technology for clarifying fuel oil belongs to general physical or chemical separation method.All to be precipitated as the master, the present invention overcomes the prejudice of fuel oil precipitation more than 48 hours of long-term formation in present domestic diesel oil purification, and adopting regularly, storage, classification pipe bury, do not stay precipitation, the filtering flow process of static pressure.Can save the precipitated oil that is bled off, save diesel oil 5～10%, reduce the pollution of diesel oil in the oil tank simultaneously, avoid oil consumption increase and power to descend.This technology is suitable for the oil depot of state farm and township farm machinery station.

Description

Technology for clarifying fuel oil

The invention belongs to general physical or chemical separation method, particularly the purifying method of fuel oil.

Present domestic diesel oil purifies all to be precipitated as the master, and lay special stress on will have 48 hours precipitation, the diesel oil of extracting 15～20 centimetres or 30～40 centimetres at the bottom of jar.It is theory and the method for introducing from Soviet Union's the fifties that precipitation purifies.China state farm and farm machinery station have proposed typical diesel oil purification scheme according to this theory: buffering emptying, float are got oil, three-stage filtration, two-stage precipitation and are carried out the locomotive sealing and refuel.The shortcoming of precipitation purification scheme: not only make the processed waste of precipitation diesel oil, and the colloid in these precipitated oils has also constantly been polluted the fuel oil of whole oil tank.

The objective of the invention is to overcome the essential precipitation of the long-term clarifying fuel oil that forms of expert more than 48 hours, the buffering emptying, float is got oil, three-stage filtration, the sedimentary prejudice of two-stage provides a kind of new 48 hours sedimentary fuel purification process that do not adopt.

It is considered herein that diesel oil purifies not only will remove inorganic mineral impurity, and will reduce organic colloid as far as possible.A large amount of organic fine particles colloids in the diesel oil can be stopped up the locomotive filter core, and causing large automobile or reaper not to bring into play should have power.Characteristics of the present invention are ways that the purification process of solar oil no longer adopts 48 hours depositing technology and buffering emptying and float to get oil, but adopt following control measures to reach the purpose that diesel oil purifies: to be no more than 8 months regular storage, management by different levels (pressing oil depot capacity and fuel oil quality stock management respectively), do not stay precipitation (solar oil from jar at the bottom of direct extraction), static pressure filter (by the gravity flow of fuel oil pressure reduction or be lower than an atmospheric pump inhale filter).

Agricultural diesel oil adopts post precipitation to generate a large amount of colloid particulates, because contain alkane, naphthenic hydrocarbon, aromatic hydrocarbon and alkene in the diesel oil, wherein contain two keys in the molecule of alkene, diolefine, the character destabilization, easily oxidation generates polymer dope, i.e. colloid at normal temperatures.Hydro carbons can produce active free radical under light and Temperature Influence, with alkene and oxygen effect, generate a series of intermediate oxidation product easily, through polymerization, generates at last in " micelle ", is suspended in the oil.Sulfide in diesel oil as thioether, disulfide and thiophene etc. and alkene effect, also can generate appearance like colloid, bitum material.Colloid has very strong tinting strength, in colourless gasoline, as long as it is heavy to add 0.005%() colloid, just can be dyed straw yellow.Colloid itself has the oxidation catalysis effect, can quicken the oxidation of fuel oil.Gelationus increases in the diesel oil, and beginning is very slowly, but just begins anxious increasing after having spent the certain period, and therefore arrangement and use when colloid begins anxious increasing can prevent to cause the serious rotten of diesel oil.

Adopt the unit of precipitation scheme, all be brown as the diesel oil of center, Lu Tai farm, Hebei oil depot, eastern suburb, Beijing center, farm oil depot and Jiu Gong service station, Red Star farm, Beijing and other county, township level oil depot.Adopt the new precipitation scheme of not staying, can keep the oil-feed primary colors, if adopt static pressure to filter, color also can shoal.

Fig. 1 is indoor oil depot oiling schema.1-winter oil jar, the 2-valve, the two-door non-return valve cap of 3-band sedimentation glass, 4-summer oil jar, the 5-automatic gauge adds oil meter, the 6-tube stub.

Fig. 2 is outdoor oil depot oiling schema.The 7-storage tank can, the big oil tank of 8-, the 9-oil pump, the 10-tall can, the 11-strainer, 12-purifies oil tank, 13-strapping table, 14-compressor gun, 15-ventilating pit.

Embodiment 1: indoor underground or semi-underground storages, and utilize storage tank can gravity flow to drain the oil, to indoor ground oil depot, the oil pump that also can adopt storage tank can is to winter oil jar emptying, before draining the oil, should be earlier the precipitation water of storage tank can oil tank be bled off.Winter oil jar 1 enters the two-door non-return valve cap 3 of being with sedimentation glass through valve 2, and the upper end of non-return valve cap 3 is associated with automatic petrol filler 5, and there is valve 2 centre, and the other end of vacuum breaker flows to summer oil jar 4 by valve 2.Want proper operation to use automatic petrol filler, routine cleaning is changed felt fine filtering core.

Embodiment 2: outdoor oil depot, and Gao Tai oil discharging by gravity flow, the static pressure gravity flow is filtered, and automatic gauge refuels.The oil that storage tank can ships is gone into big oil tank 8 earlier, is pressed into tall can 10 with oil pump 9, and high tankage is greater than one times that purifies oil tank 12, and tall can flows into by strainer 11 and purifies oil tank 12, purifies liftoff 1.4 meters of oil tank, refuels and is undertaken by strapping table 13 and compressor gun 14.The ventilating pit 15 that purifies oil tank can make diesel oil and air isolate substantially, has both reduced airborne dust and has entered the purification oil tank with the breathing of oil tank, can reduce the colloid sediment that diesel oil generates because of deterioration by oxidation again.

Advantage of the present invention and good effect are: adopt old technology, per 10 tons of oil tanks have 0.5 ton of precipitated oil approximately. Adopt fuel-economizing 5～10% diesel oil after this technology, produce 20,000,000 tons of diesel oil so that China is annual, can save precipitated oil 10～200,000 ton. Because precipitation diesel oil, colloid increases severely, and oil consumption increases, and power can not be brought into play, and adopts this technology can alleviate pollution variable color and the saving oil consumption of diesel oil.

Claims (3)

1, a kind of fuel purification process is characterized in that not adopting 48 hours precipitations, buffering emptying and float to get oil, and takes to be no more than 8 months regular storage, and precipitation is not stayed in management by different levels, diesel oil direct extraction at the bottom of the jar, and static pressure filters.

2,, it is characterized in that management by different levels refers to by oil depot capacity and fuel oil quality difference stock management by the described technology of claim 1.

3,, it is characterized in that static pressure filters to depend on the gravity flow of fuel oil pressure reduction or be lower than an atmospheric pump and inhale and filter by the described technology of claim 1.