CN2633861Y

CN2633861Y - Seal air-float oil removing device

Info

Publication number: CN2633861Y
Application number: CN 03262468
Authority: CN
Inventors: 刘乃瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-16
Filing date: 2003-08-16
Publication date: 2004-08-18
Anticipated expiration: 2013-08-16

Abstract

A seal air-float oil removing device is characterized in that: it comprises an airtight container, a flotation chamber, a clarification pool, a gas phase chamber, an oil-discharge chamber, a gas-liquid mixing device, an air inlet pipe, a water inlet pipe and a water outlet pipe, wherein, the flotation chamber which is arranged inside the airtight container has the upper part provided with the gas phase chamber and the lower part provided with the clarification pool; the upper part of the airtight container is connected with the air inlet pipe communicated with a gas source; the gas phase chamber and the flotation chamber are communicated with the gas-liquid mixing device through a gas-liquid mixing pipe and a gas circulation pipe and also are respectively communicated with the oil-discharge chamber; in addition, the gas-liquid mixing device is also connected with an effluent water return pipe. Oily sewage flows into the pipe of the flotation chamber through the water inlet pipe and is mixed with the gas from the gas-liquid mixing pipe inside the pipe of the flotation chamber; after oil-water separation, water is channeled out through the water outlet pipe connected with the pipe of the clarification pool, while oil is discharged through the oil-discharge pipe connected with the oil-discharge chamber.

Description

Sealing air supporting oil eliminator

Technical field: the utility model relates to a kind of sewage disposal device, particularly a kind of sealing air supporting oil eliminator.

Background technology: common air air-float water treatment process, water can be by the oxygen that fully exposes to the sun, and some oily water treatment does not allow to expose to the sun oxygen, high salinity as oil field extracted water, high chlorion content, such water is behind overexposure oxygen, can aggravate subsequent technique equipment, process pipeline corrosion, even the obstruction stratum, therefore, with the re-injection to be that the disposing polluted water in oil of purpose requires with air isolated, airtight operation.

Summary of the invention: the purpose of this utility model is a kind of sealing air supporting oil eliminator of design, and it is difficult for the oxygen that exposes to the sun, and can effectively handle high chlorion content, concentrated water, reaches the requirement of finishing disposing polluted water in oil.

The object of the present invention is achieved like this, sealing air supporting oil eliminator, it is characterized in that: it is made up of sealed vessel, flotation cell, settling pond, phase chamber, oil extraction chamber, Liqiud-gas mixing device, inlet pipe, water inlet pipe, rising pipe, flotation cell is in sealed vessel, flotation cell top is phase chamber, the flotation cell bottom is a settling pond, sealed vessel top taps into tracheae, inlet pipe is connected with source of the gas, phase chamber communicates with Liqiud-gas mixing device by gas-liquid mixed pipe, gas circulating tube on the one hand with flotation cell, and phase chamber communicates with the oil extraction chamber again respectively on the other hand with flotation cell; Liqiud-gas mixing device is connected to the effluent recycling pipe simultaneously; Oily(waste)water is by water inlet pipe and flotation cell pipe connection, here mixes with gas from the gas-liquid mixed pipe, and after the oily water separation, water is by drawing with the rising pipe of settling pond pipe coupling, and oil is discharged by the oil exit pipe that is connected with the oil extraction chamber.

Described source of the gas is a rare gas element.

Described source of the gas is a nitrogen.

Described source of the gas is a hydrogen.

Airtight oil removal by air bubbling device has overcome the floating defective of above-mentioned air vapour, utilizes oil loving Sweet natural gas (or other cheap rare gas element such as nitrogen, hydrogen etc.) as the air supporting source of the gas, to finish floatation process in encloses container, and gas circulation uses trace to replenish.Avoided using the floating process water of the air vapour defective of oxygen of being exposed to the sun.Use Sweet natural gas as source of the gas,, have significant lipophilicity, therefore, need not add flotation agent and also can obtain deoiling effect preferably because Sweet natural gas and crude oil belong to allied substances.Rational structure arranges, guaranteed that the oil extraction draining carries out automatically.

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:

Description of drawings: Fig. 1 is a kind of horizontal example structure synoptic diagram.

Fig. 2 is a kind of vertical structure synoptic diagram.

Among the figure, 1, settling pond; 2, flotation cell; 3, water-oil interface surge chamber; 4, phase chamber; 5, oil extraction chamber; 6, automatic voltage regulation valve; 7,8, level control valve; 9, waste pipe; 10, rising pipe; 11, gas-liquid mixed pipe; 12, gas circulating tube; 13, effluent recycling pipe; 14, inlet pipe; 15, oil exit pipe; 16, Liqiud-gas mixing device; 17, pressure equalizing pipe; 18, sewage overflow pipe; 19, sealed vessel.

Embodiment: as shown in Figure 1, Fig. 1 is the structural representation of horizontal sealed vessel, it is by sealed vessel 19, flotation cell 2, settling pond 1, phase chamber 4, oil extraction chamber 5, Liqiud-gas mixing device 16, inlet pipe 14, water inlet pipe 9, rising pipe 10 is formed, flotation cell 2 is in sealed vessel 19, flotation cell 2 tops are phase chamber 4, flotation cell 2 bottoms are settling ponds 1, sealed vessel 19 tops tap into tracheae 14, phase chamber 4 and flotation cell 2 are on the one hand by gas-liquid mixed pipe 11, gas circulating tube 12 communicates with Liqiud-gas mixing device 16, and phase chamber 4 communicates with oil extraction chamber 5 again respectively on the other hand with flotation cell 2; Liqiud-gas mixing device 16 is connected to the effluent recycling pipe simultaneously; Oily(waste)water is by water inlet pipe 9 and flotation cell 2 pipe connection, here mixes with gas from gas-liquid mixed pipe 11, and after the oily water separation, water is by drawing oil exit pipe 15 discharges of oil by being connected with oil extraction chamber 5 with the rising pipe 10 of settling pond 1 pipe coupling.On oil exit pipe 15 lines control valve 8 is arranged.On rising pipe 10 lines control valve 7 is arranged.Be connected to automatic voltage regulation valve 6 on the inlet pipe 14.Horizontal type structure can be made multistage air supporting, and Fig. 1 embodiment has provided the secondary air-floatation structure.

Fig. 2 is a kind of structural representation of vertical vessel, and in this structure, oil extraction chamber 5 can be placed on outside the sealed vessel 19, by the pressure equalizing pipe 17 that communicates with phase chamber 4, the sewage overflow pipe that communicates with flotation cell 2 18 respectively again with oil extraction chamber 5 pipe coupling.5 bottoms, oil extraction chamber are connected to oil exit pipe 15, on oil exit pipe 15 lines control valve 8 are arranged.

In the sealed vessel 19 water-oil interface surge chamber 3 arranged.

Oily(waste)water enters flotation cell 2 by waste pipe 9, here with the carbonated drink thorough mixing of gas-liquid mixed pipe 11, oil in water emulsion is caught by micro-bubble in the sewage, in the process of the settling pond 1 in flowing to lower seal container 19, part small bubbles carry and float to the water surface on the oil in water emulsion, and another part floats to the water surface on then in the competent residence time that settling pond 1 provides; Water after the oil removing finally flows out through rising pipe 10 in the adjusting of

level control valve

7,8 in settling pond 1 bottom.The above gas cloud of liquid level constitutes phase chamber 4 in the sealed vessel 19, and source of the gas enters phase chamber 4 by inlet pipe 14, and outer gas enters phase chamber 4 and produces air supporting.Be connected with automatic voltage regulation valve 6 on the inlet pipe 14, play the effect of stable system operating pressure simultaneously.Phase chamber 4 is connected by gas circulating tube 12 with Liqiud-gas mixing device 11, and the gas of phase chamber 4 recycles by gas circulating tube 12.Airtight oil removal by air bubbling device has overcome the floating defective of above-mentioned air vapour, utilizes oil loving Sweet natural gas (or other cheap rare gas element such as nitrogen, hydrogen etc.) as the air supporting source of the gas, to finish floatation process in encloses container, and gas circulation uses trace to replenish.

In the utility model embodiment, oil extraction chamber 5 inlet weirs are set are higher than water management liquid level 3 Δ h, the sump oil of bubbling through the water column is being mingled with bubble formation oil gas mixed phase layer, there are density difference in primary water and oil gas mixed phase layer, then static condition oil gas mixed phase layer thickness is greater than Δ h, therefore oil gas mixed phase floor can enter oil extraction chamber 5, such result has guaranteed that substantially water does not enter oil extraction chamber 5, in the vertical structure of Fig. 1, oil gas further separates, form certain sump oil liquid level, advance by Floating Ball Liquid Level Control valve 8 at last, get rid of automatically through pipeline 15; The used source of the gas of air supporting is supplied with phase chamber 4 by pipeline 14, is located at the pressure maintaining valve 6 on this pipeline, plays the effect of stable system operating pressure simultaneously.Air supporting gas recycles by pipeline 12, replenishes by pipeline 14 trace; 16 is gas-liquid mixed equipment, with gas and partial reflux water (account for usually pipeline 10 water outlets 30%) thorough mixing, and forms micro-bubble gas-liquid mixed phase by it, is entering flotation cell 2 by pipeline 11.

Claims

1, sealing air supporting oil eliminator, it is characterized in that: it is by sealed vessel (19), flotation cell (2), settling pond (1), phase chamber (4), oil extraction chamber (5), Liqiud-gas mixing device (16), inlet pipe (14), water inlet pipe (9), rising pipe (10) is formed, flotation cell (2) is in sealed vessel (19), flotation cell (2) top is phase chamber (4), flotation cell (2) bottom is settling pond (1), sealed vessel (19) top taps into tracheae (14), phase chamber (4) and flotation cell (2) are on the one hand by gas-liquid mixed pipe (11), gas circulating tube (12) communicates with Liqiud-gas mixing device (16), and phase chamber (4) communicates with oil extraction chamber (5) again respectively on the other hand with flotation cell (2); Liqiud-gas mixing device (16) is connected to effluent recycling pipe (3) simultaneously; Oily(waste)water is by water inlet pipe (9) and flotation cell (2) pipe connection, here mix with gas from gas-liquid mixed pipe (11), after the oily water separation, water is by drawing with the rising pipe (10) of settling pond (1) pipe coupling, and oil is discharged by the oil exit pipe (15) that is connected with oil extraction chamber (5).

2, sealing air supporting oil eliminator according to claim 1 is characterized in that: on oil exit pipe (15) line control valve (8) is arranged.

3, sealing air supporting oil eliminator according to claim 1 is characterized in that: on rising pipe (10) line control valve (7) is arranged.

4, sealing air supporting oil eliminator according to claim 1 is characterized in that: be connected to automatic voltage regulation valve (6) on the inlet pipe (14).

5, sealing air supporting oil eliminator according to claim 1, it is characterized in that: sealed vessel (19) is a horizontal type structure, and a plurality of flotation cells (2), settling pond (1), phase chamber (4), oil extraction chamber (5) are arranged in a horizontal sealed vessel (19).

6, sealing air supporting oil eliminator according to claim 1, it is characterized in that: oil extraction chamber (5) can be placed on outside the sealed vessel (19), by the pressure equalizing pipe (17) that communicates with phase chamber (4), the sewage overflow pipe (18) that communicates with flotation cell (2) respectively again with oil extraction chamber (5) pipe coupling.

7, sealing air supporting oil eliminator according to claim 1 is characterized in that: water-oil interface surge chamber (3) arranged in the sealed vessel (19).