CN1015421B - Equipment for recovering and concentrating oil in water - Google Patents

Abstract

The present invention belongs to equipment for recovering and concentrating oil or organic substances in water. The periphery of the equipment is provided with a cylindrical vortex generation cavity with a tangential material inlet. A cavity seat is provided with an overflow pipe. A circular oil drum which can slide upwards and downwards is arranged in a cavity body. An oil outlet between the overflow pipe and the circular oil drum is connected with a soft pipe. The equipment can recover oil or organic substances with similar or identical specific density with that of water from the water. For high-level oil-water separating equipment such as film phase separating water removing equipment in the oil, hollow fiber ultrafiltration oil removing equipment, etc., the equipment for recovering the oil can perform a pre-separation function.

Description

Equipment for recovering and concentrating oil in water

The invention belongs to a kind of chemical separating device, relate to the equipment that the method that is separated with the film phase-splitting concentrates the oil in the water or organism and reclaim.

General oily water separating equipment all needs the density of oil littler of to a certain degree finishing sepn process well than the density of water, the patent of invention of China for example: " the different immiscible liquid of two kinds of density as the separator of oil and water: CN85100 767A " is a typical example, and its adopts the method for centrifugation that oily and water are separated; The shortcoming of this equipment is can not partition density identical or close two kinds of immiscible liquids such as oil and water.

The removal of oil in even the water that equates near with water for those density, more satisfactory method is with film split-phase method or tubular fibre ultra-filtration method at present, has begun to drop into practical application.

China's patent " a kind of film phase-splitting waste-oil scavenger ", oil droplet is trapped within the original feed liquid by with hydrophilic film portion water being separated from oil-water mixture (patent No. 86204424), along with the circulation of feed liquid, water is little by little told by phase membrane, and the oil concentration in the feed liquid is more and more higher; When the oil concentration in the water surpassed 5%, phase membrane was very big by the possibility of oily pickup, and the number of times of changing phase membrane also will correspondingly increase.

Tubular fibre amicon (production of Beijing Telecommunications Equipment Plant of the Post and Telegraph Department) is that depended on pressure is extruding the aperture of portion water from fiber, and the oil droplet in the water is trapped within greatly in the original feed liquid because of diameter, along with moving in circles of feed liquid, the water in the feed liquid is fewer and feweri, and the concentration of oil is more and more higher; When the oil concentration in the feed liquid was above above 5%, the aperture on the tubular fibre was very easily stopped up by oil droplet, causes the damage of equipment.

Purpose of the present invention provides a kind of device for addressing the above problem exactly, and it can concentrate the oil of excessive concentration in the feed liquid and reclaim, and the concentration of the oil in the water is reduced to below 0.1%, has reached the purpose of oil removing; Pre-processing device as waste-oil scavenger or tubular fibre amicon in the film phase-splitting water is that well it can guarantee that above-mentioned two kinds of equipment normally move.

Main points of the present invention are the oil in the water to be concentrated and reclaims reach with the coarse method with the oleophyllie hydrophobic phase membrane tiny oil droplets in the feed liquid to be become the method that combines greatly.This equipment is made up of following three parts: (1) garden columnar vortex generation cavity that has the tangential admission mouth; (2) garden shape oil drums that on the garden bar that is fixed in post center, garden, can slide up and down; The oleophylic phase membrane just wraps in You Gushang, and there is individual outlet-port oil drum lower end; (3) below the oil drum, two multihole distributors are arranged, fill up lipophilic immobilized particles or fiber between two plates.

Below in conjunction with accompanying drawing this invention is explained in detail:

Fig. 1 is the equipment synoptic diagram of oil in concentrated and the recycle-water.

Fig. 2 is a movable garden shape oil drum structure iron.

[1] is cylindric eddy current generation cavity, [2] movable circular oil drum, [3] [5] multihole distributor, [4] oleophylic filler, [6] material liquid outlet, [2] drain, round bar, [9] aperture, [10] overflow port, [11] oil outlet, [12] groove, [13] through hole, [14] aperture, [15] opening for feed, [16] oil outlet, [17] flexible pipe, [18] phase membrane, [19] upflow tube upper outlet, [20] handle, [21] support.

Equipment is by a cylindric eddy current generation cavity [1] with the tangential admission mouth; a movable circular oil drum [2] that slides up and down at the round bar that is fixed in cylindrical center; below movable circular oil drum, two multihole distributors [3] [5] are arranged, between two plates, fill up the compositions such as the solid particle of oleophylic or fiber [4] filler.

Cylindric eddy current generation cavity upper top opening, there is the end next top. One tangential charging aperture [15] is arranged, an overfall [10], a material liquid outlet [6]; The bottom that overfall and material liquid outlet can be positioned on cylindric eddy current generation cavity also can be positioned on its bottom, and material liquid outlet [6] when it is positioned on the bottom, the pipe of overfall [10] need exceed base plate and enter the back to prevent solid particle In the waste-oil scavenger; Also having a drain [7], purpose at base plate is to put whole feed liquids in the eddy current generation cavity clearly and the usefulness of cleaning equipment. Tangential admission mouth [15] is near the top of eddy current generation cavity. The height of the upper outlet [19] of the overflow pipe that links to each other with overfall [10] is lower than 15-30 centimetre of cylindrical swirl generation cavity upper top and gets final product. One oil outlet [11] is arranged on the eddy current generation cavity, the height from the overflow pipe highest point within 20 centimetres. In eddy current generation cavity center one fixing small round bar [8] is arranged, many apertures [9] are arranged on the bar, the usefulness of rousing the height of [2] in order to regulate fixing movable oil. Movable circular oil drum [2] is cylindrical, and there is a cylindrical hole [13] with cylindrical-concentric the centre, and the diameter of through hole [13] is greater than the diameter of round bar [8]. All there is the end at the up and down two ends of oil drum [2], at the oil-out [16] of having gone to the bottom. Be connected by flexible pipe [17] between the oil-out [16] [11]. It is oleophylic phase membrane [18] that the centre of the big column that the oil drum is peripheral is all divided, the film that namely steeped with the oil immersion that will recycle, and its material is polypropylene or polytetrafluoroethylene (PTFE), also can be polyethylene, polyvinyl chloride, Kynoar, Vingon, polyamide. The up and down two ends of oil drum are fluted [12] all, and phase membrane [18] is by tying up or the method such as iron chains embedding is fixed on the periphery of oil drum, and the oil drum has just become except oil-out [16] without any the confined space that exports like this. The upper bottom portion of oil drum has handle [20], and purpose is that the oil drum is fixed on the slide bar [8], and the height that oil is roused can free adjustment. There are two circular multihole distributors [3] [5] oil drum below, many apertures [14] are arranged above, between two distribution grids, fill up lipophilic material fiber or particle, material is polypropylene or polytetrafluoroethylene (PTFE) polyethylene, polyvinyl chloride, also can be Kynoar, Vingon, distribution grid [5] are to be placed on the support [21].

After feed liquid enters the circular vortex generation cavity by charging aperture [15], because feed liquid has higher initial velocity, therefore ceaselessly rotation in the eddy current generation cavity, so just increased the chance that oil droplet contacts with the upper oil-wet film of oil drum in the feed liquid, oil-wet film on oil droplet and the oil drum-contact is absorbed by oil-wet film immediately and enters oil and automatically flow out by oil-out in rousing. The little oil droplet of not captured by the oil drum moves downward with feed liquid, contact by its absorption with lipophilic material [4], increased the pearl footpath of oil droplet, the oil-wet film that is roused by oil again in the feed liquid circulation afterwards absorbs, so move in circles, just the oil in the feed liquid is concentrated and return.

When the density of oil than water hour, oil rotates with feed liquid in the eddy current generation cavity in the water, and to central motion, is captured by the oil drum then easilier, is concentrated and reclaims easilier.

Embodiment: concentrate and reclaim the epoxy soybean oil in the aqueous formic acid, oil concentration is concentrated to more than 70% from original 2～3%, handles it with waste-oil scavenger in the film phase-splitting water and flows out feed liquid, and content oily in the water can be less than 10ppm.

Claims (1)

1, a kind of concentrate and recycle-water in the equipment of oil, comprise cylindrical outside shell, its top is provided with a tangential opening for feed [15], forms cylindric eddy current generation cavity [1]; Be one to have the round bar [8] of a plurality of apertures at cylindrical center place, round bar is with a cylindrical oil drum [2] that slides up and down outward, and by tying up the periphery that phase membrane [18] is fixed on the oil drum, oil drum lower end has an oil outlet [16] to this oil drum upper and lower ends respectively; Oil drum below is provided with two multihole distributors [3], [5], fills up lipophilic material [4] between two boards.

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