CN1270985A - Continuous heavy oil emulsifying process - Google Patents

Abstract

A continuous heavy oil emulsifying process consists of pre-heating, filtering, mixing with water and surfactant, and emulsifying in high-speed emulsifying homogenizer. The said emulsifying homogenizer has a motor-driven three-stage worm-shaped wheel vanes which rotate in high speed to make oil and water produce great centrifugal force for mutual permeation and interweaving to realize particle fining and emulsifying. The process has the advantages of relatively low temperature for emulsification and in front of furnace, long emulsified oil storage period up to 6 months and low power consumption, and is suitable for continuous large-scale production.

Description

Continuous heavy oil emulsifying process

The present invention relates to heavy oil emulsifying.

At present, the emulsified heavy oil firing is as national energy engineering promotion project.And generally being mink cell focus, heavy oil emulsifying is placed on the storage tanker internal heating to emulsifying temperature, then pump into filtering net, add tensio-active agent again, water enters mulser emulsification, the several problems of such emulsified heavy oil technology ubiquity: the one, heavy oil emulsive producer with separate with oily family, this is can not mass production because of the heavy oil emulsifying production unit.Do not satisfy the production requirement with oily rich and influential family, and limited with oil mass with oily small family, the emulsification heavy oil storage-life generally has only one month, with oily small family charging in enormous quantities.The 2nd, mulser technology falls behind, and causes the profit composite grain big, poor stability, emulsified state is undesirable, and mulser adopts agitator, ultrasonic emulsification machine, even matter device, colloidal mill can not realize continous way large production, weak effect more, and mostly be open production, contaminate environment.The 3rd, newborn temperature height is treated in existing emulsification manufacturing technique requirent oil-feed, the operating pressure height, and power consumption is big, and the emulsification cost increases.The 4th, the stokehold preheating temperature the when residual oil that existing emulsification production technique is produced enters boiler combustion requires 130 ℃ to 135 ℃, and stokehold pressure also needs 25 kilograms, and same stokehold energy consumption for keeping temperature is big, increases cost.

The objective of the invention is to overcome above-mentioned defective, provide a kind of on-line continuous formula big quantized heavy oil emulsifying process, produce high-quality oil in water emulsion with emulsify at a high speed speed.

The solution of the present invention is: mink cell focus is warmed in storage tanker treats that newborn temperature, pump cross filtering net and enter the emulsify at a high speed homogenizer with modulated water of going into tensio-active agent and carry out high speed centrifugation emulsification.

The invention has the advantages that and adopt the emulsify at a high speed homogenizer to make the centrifugal speed of oil, water big, impact force strengthens, thereby emulsifying temperature is treated that newborn temperature is low and is reached high-quality emulsifying effectiveness than what common process required, because the at a high speed big impact force of profit makes emulsive oil, particle water come much smallerly than common process again, interpenetrating refinement contains effective, particle is more little, and the stable emulsifying performance is good more, and minimum reach six month at 65 ℃-85 ℃ the oily storage period after the emulsification.Owing to emulsify well, oil in water emulsion incendiary stokehold holding temperature also is reduced to 80 ℃ to 110 ℃ simultaneously, and stokehold pressure also reduces to below 20 kilograms.Not only saved the energy of oil temperature heating before the emulsification, stokehold preheating insulation energy during also energy-conservation combustion oil.Improved quality grade after making poor quality oil emulsification simultaneously.

Accompanying drawing is an emulsify at a high speed homogenizer structural representation.

1 is oil-in among the figure, and 2 is casing, and 3 is the wheel blade cover, and 4 is main shaft, and 5 is oil outlet, and 6 is support, and 7 is clutch, and 8 is electric motor.

The present invention implements like this: production line inserts oil pump by storage tanker through piping, insert one of threeway, threeway behind the oil pump and enter storage tanker in the loop again by reducing valve, the threeway other end enters oil-water proportional mixer by filtering net, and one of oil-water proportional mixer is a water inlet pipe, water inlet pipe is communicated with water tank, and water tank is communicated with external water pipe and additive pipe again.The emulsify at a high speed homogenizer is inserted in the oil-water proportional mixer other end, and the outlet of spoon matter machine realizes emulsification-burning on-line continuous function by pipeline cut into operation jar thereby the work jar can directly insert boiler stokehold device.

The emulsify at a high speed homogenizer is made up of support, electric motor, clutch, bearing, main shaft, three wheel blade covers, casings, electric motor directly is connected with main shaft by clutch, casing front end level is to being oil-in, the rear end vertically is provided with oil outlet, three wheel blade covers are fixedly mounted on the main shaft at interval, each wheel blade has put three or four wheel blades, wheel blade is difform snail sheet, can make oil-water fluid produce centrifugal force to the casing inner wall direction during rotation and produce horizontal thrust to the casing rear portion simultaneously again.

During emulsification, treat newborn temperature being heated in the mink cell focus adding storage tanker, if heavy oil then only need be heated to 60 ℃ to 65 ℃, if residual oil then only need be heated to 80 ℃ to 85 ℃, then cross filtering net by the oil pump pump, the purpose that the reducing valve loop is set is to keep the pressure of mink cell focus before filtering net, and then mink cell focus enters the emulsify at a high speed homogenizer by oil-water proportional mixer.Tensio-active agent adds water tank as additive, enters the high speed homogenizer through piping, oil-water proportional mixer and one of mink cell focus again.Because homogenizer is not by slowing down but directly drive wheel blade rotation on the main shaft by electric motor, changeing scooter per minute 3,000 changes, so profit is because after the pump pressure of front enters wheel blade, wheel blade stirs profit and makes high speed rotating, produce huge centrifugal force, and oil, water proportion difference, thereby centrifugal force and acceleration are also different, so oil, water is big to movement velocity, it is interspersed that thereby generation interpenetrates, and profit tiltedly gets rid of and changes direction again to casing inner wall and flow towards the rear portion, so extruding mutually is oil, water grain refine blending in big reactive force extruding break-in, the oil-water mixture that mixes through the first road wheel blade cover enters the second road wheel blade cover again and mixes then more refinement syncretization more, so mix then progressively refinement fusion of emulsifying effectiveness profit particle through three grades.The casing oil outlet outflow through the casing rear portion then enters the work jar.

The present invention utilizes the emulsify at a high speed homogenizer, why can reduce oil-feed and treat newborn temperature, though principle is oil-feed and treats that newborn temperature is lower than common process requirement, and viscosity is big, but the same emulsifying effectiveness that produces under the effect of high speed centrifugation power, and emulsifying effectiveness is better than common process, particle is refinement more, stability is better, so the oily storage period after the emulsification can reach six months 65 ℃ of-85 ℃ of keepings, a month storage period more than common process is longer, and the more refinement of emulsified particle has also reduced stokehold preheating temperature and the stokehold pressure before the burning.And greatly being extended for oily small family charging in enormous quantities of storage period guarantees that production provides reliable assurance, with oily rich and influential family as long as oneself be provided with the emulsification production line, at any time emulsification then need not taken oily water separation into account after entering the work jar, enters boiler combustion thereby can directly insert the stokehold device.Realize totally-enclosed on-line continuous production, and the homogenizer day emulsification amount of emulsify at a high speed can reach more than the kiloton, also the big quantification of realization is worked continuously and is produced the requirement of satisfying with oily rich and influential family simultaneously.

Claims (4)

1, continuous heavy oil emulsifying process, comprise storage tanker, oil pump, filtering net, reducing valve loop, water tank, oil-water proportional mixer, mulser, it is characterized in that mink cell focus is warmed in storage tanker treats that newborn temperature, pump cross filtering net and enter the emulsify at a high speed homogenizer with modulated water of going into tensio-active agent and carry out high speed centrifugation emulsification.

2, continuous heavy oil emulsifying process according to claim 1, it is characterized in that the emulsify at a high speed homogenizer is made up of support, electric motor, clutch, bearing, main shaft, three wheel blade covers, casings, electric motor directly is connected with main shaft by clutch, casing front end level is to being oil-in, the rear end vertically is provided with oil outlet, three wheel blade covers are fixedly mounted on the main shaft at interval, and each wheel blade has put three or four wheel blades, and wheel blade is difform snail sheet.

3, continuous heavy oil emulsifying process according to claim 1 is characterized in that mink cell focus is warmed to treat that newborn temperature is meant that heavy oil only need be warmed to 60 ℃ to 65 ℃ in storage tanker.

4, continuous heavy oil emulsifying process according to claim 1 is characterized in that mink cell focus is warmed to treat that newborn temperature is meant that residual oil only need be warmed to 80 ℃ to 85 ℃ in the store oil heating tank.

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