CN209872616U - Oil field well acidizing waste liquid treatment device - Google Patents

Abstract

The utility model discloses an oil field well acidizing waste liquid treatment device, including decomposition tank, feed liquor pipe and blast pipe are installed on decomposition tank upper portion, be located installation deoiling device decomposition tank in the decomposition tank of feed liquor pipe department, the transmission case is installed to decomposition tank bottom, the rotatable horizontally initiative lead screw of installing in the transmission case, the initiative lead screw runs through transmission case and movable mounting has positive pole and negative pole on it, the initiative lead screw is connected with drive arrangement, drainage pipe is installed to decomposition tank lower part, drainage pipe is connected with the neutralization box, neutralization box upper portion is installed alkali lye and is gone into the pipe, the fluid-discharge tube is installed to the lower part, the agitating unit is installed to the neutralization incasement, the scum pipe is installed to neutralization bottom of the case. The utility model discloses the treatment effeciency is high, waste liquid treatment is thorough and possess the multi-stage treatment function.

Description

Oil field well acidizing waste liquid treatment device

Technical Field

The utility model relates to an oil field well acidizing field, especially an oil field well acidizing waste liquid treatment device.

Background

Acidification is a production increase measure of a carbonate rock oil layer and is also a blockage removal, production increase and injection increase measure of an oil-water well of a common sandstone oil layer. It is characterized by that it utilizes the chemical reaction of acid and mineral capable of reacting in the stratum to remove the blocked material in the pores or cracks of stratum, and at the same time makes the acid react with rock on the surface of pores or in the wall of cracks so as to increase porosity, raise or restore permeability of oil layer and increase production of oil-gas well.

A large amount of acidized waste liquid can be produced in the acidizing process, a large amount of residual acid exists in the waste liquid, the waste liquid also contains a large amount of crude oil and suspended impurities, if the waste liquid is directly discharged, serious pollution can be caused to the surrounding environment, most of the conventional waste liquid treatment devices mainly adopt a precipitation-flocculation-filtration mode, although effective degradation can be carried out on the waste liquid, the waste liquid treatment efficiency is low, the waste liquid is not thoroughly treated due to the fact that the treatment process is simple, and more pollutants still exist in the treated waste liquid.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that just to the not enough of above-mentioned prior art, provide an oil field well acidizing waste liquid treatment device that treatment effeciency is high, waste liquid treatment is thorough and possess the multi-stage treatment function.

In order to realize the above purpose, the technical scheme of the utility model is as follows:

the utility model provides an oil field well acidizing waste liquid treatment device, includes the decomposition case, feed liquor pipe and blast pipe are installed on decomposition case upper portion, be located deoiling device decomposition case is installed to the decomposition incasement installation of feed liquor pipe department, the transmission case is installed to decomposition incasement bottom, the rotatable horizontally initiative lead screw of installing in the transmission case, the initiative lead screw runs through the transmission case and movable mounting has positive pole and negative pole on it, initiative lead screw is connected with drive arrangement, drainage pipe is installed to decomposition case lower part, drainage pipe is connected with the neutralization case, alkali lye is installed on neutralization case upper portion and is gone into the pipe, the fluid-discharge tube is installed to the lower part, the internally mounted agitating unit of neutralization case, the scum pipe is installed.

Preferably, a driving worm gear is mounted on a driving screw rod in the transmission box, the driving worm gear is connected with a driven gear meshed with the driving worm gear, a driven screw rod is horizontally mounted on the driven gear, the tail end of the driven screw rod penetrates through the transmission box to extend into the decomposition box, and an ozone conveying pipe is movably mounted on the driven screw rod.

Preferably, the driving screw rod and the driven screw rod are respectively provided with a sliding block for mounting the anode rod, the cathode rod and the ozone conveying pipe in a movable manner, and the inner bottom surface of the decomposition box is respectively provided with a sliding groove for mounting the sliding block.

Preferably, the oil removing device comprises an oil filter tank, an oil filter groove and an oil filter layer, the bottom of the oil filter tank is provided with an opening and is fixedly installed on the inner wall of the decomposition tank, the oil filter groove is horizontally installed on the inner wall of the oil filter tank below the liquid inlet pipe, and the oil filter layer matched with the opening is installed at the bottom of the oil filter tank.

Preferably, the driving device comprises a placing plate and a driving motor, the placing plate is fixedly mounted on the outer wall of the decomposition box, the driving motor is mounted on the placing plate, and an output shaft of the driving motor penetrates through the decomposition box and then is connected with the driving screw rod.

Preferably, the stirring device comprises a stirring motor, a stirring shaft and stirring fins, the stirring motor is vertically arranged at the top of the neutralization tank, the output shaft of the stirring motor is connected with the stirring shaft, the lower end of the stirring shaft penetrates through the top of the neutralization tank to extend into the neutralization tank, and the stirring fins are arranged on the stirring shaft.

Preferably, the stirring fin comprises a plurality of straight fins and a plurality of curved fins, the straight fins are sequentially arranged on the stirring shaft in a staggered manner from top to bottom, and two ends of the curved fins are respectively arranged at the upper end and the lower end of the stirring shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) by arranging the oil removal device, the waste liquid flowing out of the liquid inlet pipe can be treated again, crude oil and solid impurities in the waste liquid are removed, multi-stage filtration is performed, and the treatment efficiency of the waste liquid is improved;

(2) by arranging the anode rod and the cathode rod, hydrogen ions in the acid solution can be reduced into hydrogen gas through an electrolytic reaction and discharged, so that the acidity of the waste liquid can be effectively adjusted;

(3) by arranging the active lead screw and the driving motor, the anode rod and the cathode rod can make reciprocating linear motion on the active lead screw, the contact with acid liquor is more sufficient, and the waste liquid treatment efficiency is improved;

(4) through the arrangement of the driven screw rod and the ozone conveying pipe, the driven screw rod can be driven to rotate while the driving screw rod rotates, so that the ozone conveying pipe is driven to move on the driven screw rod, pollutants such as phenol and cyanogen carried in waste liquid are removed, and the waste liquid is treated more thoroughly;

(5) through setting up neutralization box, alkali lye go into pipe and agitating unit, can further neutralize the acidizing fluid, make the waste liquid treatment more thorough.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of FIG. 1 at A;

fig. 4 is a schematic structural diagram of the decomposition box of the present invention.

The labels in the figure are: 1-a decomposition box, 2-a liquid inlet pipe, 3-an exhaust pipe, 4-an oil outlet device, 41-an oil filter box, 42-an oil filter tank, 43-an oil filter layer, 5-a transmission box, 6-an active screw rod, 7-a driving device, 71-a placing plate, 72-a driving motor, 8-an anode rod, 9-a cathode rod, 10-a drainage pipe and 11-a neutralization box, 12-an alkali liquor inlet pipe, 13-a liquid discharge pipe, 14-a stirring device, 141-a stirring motor, 142-a stirring shaft, 143-a stirring fin, 1431-a straight fin, 1432-a curved fin, 15-a slag discharge pipe, 16-a driving turbine, 17-a driven turbine, 18-a driven screw rod, 19-an ozone delivery pipe, 20-a PH detector and 21-a water pump.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:

as shown in fig. 1 to 4, the present embodiment provides an oilfield well acidizing waste liquid treatment device, which includes a decomposition tank 1, a liquid inlet pipe 2, an exhaust pipe 3, an oil outlet device 4, a transmission case 5, a driving screw rod 6, a driving device 7, an anode rod 8, a cathode rod 9, a water discharge pipe 10, a neutralization tank 11, an alkali liquid inlet pipe 12, a liquid discharge pipe 13, a stirring device 14, a slag discharge pipe 15, a driving turbine 16, a driven turbine 17, a driven screw rod 18, an ozone delivery pipe 19, a PH detector 20, and a water pump 21.

A liquid inlet pipe 2 is arranged at the upper part of the decomposition box 1, and a filter screen is arranged in the liquid inlet pipe 2 and can filter solid impurities carried in waste liquid; the oil filter tank 41 is provided with an opening at the bottom and is fixedly arranged on the inner wall of the decomposition tank 1, the oil filter tank 41 inner wall below the liquid inlet pipe 2 is horizontally provided with the oil filter tank 42, the oil filter tank 42 can filter waste liquid flowing out from the liquid inlet pipe 2 again, the oil filter layer 43 matched with the opening is arranged at the bottom of the oil filter tank 41, and the oil filter layer 43 is preferably an activated carbon sponge layer, so that crude oil carried in the waste liquid can be further adsorbed, and solid impurities carried in the waste water can be filtered; the side wall of the decomposition tank 1 below the oil removing device 4 is provided with a window for replacing the oil filtering layer 43, so that the oil filtering layer 43 is convenient to replace, crude oil and solid impurities in the waste liquid can be removed through the matching of the oil filtering groove 42 and the oil filtering layer 43, the multi-stage filtration is realized, and the treatment efficiency of the waste liquid is improved.

The middle part of the inner bottom surface of the decomposition box 1 is provided with a transmission box 5, a horizontal driving screw 6 is rotatably arranged in the transmission box 5, the driving screw 6 penetrates through the transmission box 5, two ends of the driving screw are movably provided with sliding blocks, the tops of the sliding blocks are respectively provided with an anode rod 8 and a cathode rod 9, the inner bottom surface of the decomposition box 1 is provided with a sliding chute for mounting the sliding blocks, the anode rod 8 and the cathode rod 9 are both made of graphite materials and are electrically connected with a power supply, one end of the driving screw 6 is connected with a driving device 7, and the other end of the driving screw is connected with the inner; the driving device 7 comprises a placing plate 71 and a driving motor 72, the placing plate 71 is horizontally arranged on the outer wall of the decomposition box 1, the driving motor 72 is arranged at the top of the placing plate 72, the driving motor 72 is preferably a direct current motor and is electrically connected with a power supply, and an output shaft of the driving motor 72 penetrates through the side wall of the decomposition box 1 and then is connected with the driving screw rod 6 through a flange; by arranging the anode rod 8 and the cathode rod 9, the waste liquid in the decomposition tank 1 can be subjected to electrolytic reaction, the anode rod 8 oxidizes ferrous ions in the waste water into ferric ions, and the cathode rod 9 reduces hydrogen ions in the waste water into hydrogen gas to adjust the pH value of the waste water; can drive initiative lead screw 6 through the rotation of driving motor 72 and rotate to drive anode rod 8 and negative pole 9 and remove on initiative lead screw 6, make anode rod 8 and negative pole 9 fully contact with the waste liquid, thereby improve the speed of electrolytic reaction, further improve the treatment effeciency of waste water.

A driving worm gear 16 is arranged on a driving screw 6 positioned in the transmission case 5, driven worm gears 17 meshed with the driving worm gear 16 are connected to two sides of the driving worm gear 16, driven screw rods 18 are horizontally arranged on the driven worm gears 17, the tail ends of the driven screw rods 18 penetrate through the transmission case 5 and then are rotatably arranged on the inner wall of the decomposition case 1 through bearings, sliding blocks are movably arranged on the two driven screw rods 18, ozone conveying pipes 19 are arranged at the tops of the sliding blocks, and sliding grooves for installing the sliding blocks are formed in the inner bottom surface of the decomposition case 1; the two ozone conveying pipes 19 are respectively connected with the same ozone generator through pipelines, so that ozone can be provided for the decomposition box 1, and pollutants such as phenol, cyanogen and the like carried in waste liquid can be removed, so that the waste liquid treatment is more thorough. Drive initiative lead screw 6 through driving motor 72 and rotate the time, can drive driven lead screw 18 through initiative turbine 16 and driven turbine 17 and rotate to make ozone conveyer pipe 19 remove on driven lead screw 18, accelerate the reaction of ozone and waste water, improve waste water treatment efficiency.

The upper part of the decomposition box 1 is provided with an exhaust pipe 3 which can discharge redundant ozone and hydrogen generated by reaction, the lower part of the decomposition box 1 is provided with a drainage pipeline 10, the drainage pipeline 10 is provided with a PH detector 20 and a water pump 21, the PH detector 20 is connected with a display, the pH value of waste liquid discharged from the decomposition box 1 can be monitored in real time, and personnel can control the discharge of the waste liquid conveniently; the drainage pipeline 10 is connected with the upper part of the neutralization tank 11, an alkali liquor inlet pipe 12 is arranged at the upper part of the neutralization tank 11, a liquid discharge pipe 13 is arranged at the lower part of the neutralization tank 11, and the alkali liquor inlet pipe 12 is tangent to the side wall of the neutralization tank 11, so that alkali liquor can form rotational flow in the neutralization tank 11, and the mixing of the alkali liquor and waste liquid is accelerated; the drain pipe 13 is provided with a valve for discharging the treated waste liquid. By mixing the alkali liquor and the electrolyzed waste liquid, the pH value in the waste liquid can be further adjusted, ferric ions in the waste liquid can be hydrolyzed and used as a flocculating agent to flocculate and settle impurities suspended in the sewage, and the treatment efficiency of the waste liquid is improved; the bottom of the neutralization tank 11 is provided with a slag discharge pipe 15, and the slag discharge pipe 15 is provided with a valve which can discharge impurities precipitated at the bottom of the neutralization tank 11.

The stirring device 14 is installed in the neutralization box 11, the stirring device 14 includes a stirring motor 141, a stirring shaft 142 and a stirring fin 143, the stirring motor 141 is vertically installed on the top of the neutralization box 11, the stirring motor 141 is preferably an asynchronous alternating current motor and is electrically connected with a power supply, an output shaft of the stirring motor 141 is connected with the stirring shaft 142, the lower end of the stirring shaft 142 passes through the neutralization box 11 and then extends into the neutralization box 11, the stirring fin 143 is installed on the stirring shaft, the stirring fin 143 includes a plurality of straight fins 1431 and a plurality of curved fins 1432, the straight fins 1431 are sequentially installed on the stirring shaft 142 from top to bottom in a staggered manner, and two ends of the curved fins 1432 are respectively installed at the upper end and the lower end of the stirring shaft 143. The stirring shaft 142 can be driven to rotate by the stirring motor 141, so that the straight fins 1431 and the curved fins 1432 are driven to rotate, the solution in the neutralization box 11 is stirred, the reaction of the waste liquid and the alkali liquor is accelerated, and the treatment efficiency of the waste liquid is improved.

Because the waste liquid treated by the device is an acid corrosion solution, all parts of the device are made of acid-resistant and corrosion-resistant materials.

The utility model discloses a theory of operation: the waste liquid enters the oil filter tank 41 through the liquid inlet pipe 2, the waste liquid is filtered through the oil filter tank 42 and the oil filter layer 43, the filtered waste water flows into the decomposition tank 1, the driving motor 72 is started at the same time, the driving screw rod 6 and the driven screw rod 18 are driven by the driving motor 72 to rotate, so that the anode rod 8 and the cathode rod 9 move on the driving screw rod 6, the ozone conveying pipe 19 moves on the driven screw rod 18, the pH value of the waste liquid in the decomposition tank 1 is detected through the pH detector 20, the water pump 21 is started to convey the waste liquid into the neutralization tank 11 after the waste liquid is qualified, alkali liquid is input into the neutralization tank 11 at the same time, the stirring motor 141 is started, the stirring motor 141 drives the stirring fins 143 to rotate, solid impurities generated by reaction are discharged from the slag discharge pipe 15, and the treated liquid is discharged from the liquid.

Claims (7)

1. The utility model provides an oil field well acidizing waste liquid treatment device, includes decomposition case (1), and feed liquor pipe (2) and blast pipe (3), its characterized in that are installed on decomposition case (1) upper portion: be located installation deoiling device (4) in decomposition case (1) of feed liquor pipe (2) department, transmission case (5) are installed to the bottom in decomposition case (1), rotatable horizontally initiative lead screw (6) of installing in transmission case (5), initiative lead screw (6) run through transmission case (5) and movable mounting has positive pole (8) and negative pole (9) on it, initiative lead screw (6) are connected with drive arrangement (7), drainage pipe (10) are installed to decomposition case (1) lower part, drainage pipe (10) are connected with neutralization box (11), neutralization box (11) upper portion is installed alkali lye and is gone into pipe (12), fluid-discharge tube (13) are installed to the lower part, install agitating unit (14) in neutralization box (11), slag-discharging pipe (15) are installed to neutralization box (11) bottom.

2. The oilfield well acidizing waste liquid treatment device of claim 1, wherein: the driving worm wheel (16) is installed on a driving screw rod (6) in the transmission case (5), the driving worm wheel (16) is connected with a driven worm wheel (17) meshed with the driving worm wheel, a driven screw rod (18) is horizontally installed on the driven worm wheel (17), the tail end of the driven screw rod (18) penetrates through the transmission case (5) and extends into the decomposition case (1), and an ozone conveying pipe (19) is movably installed on the driven screw rod.

3. The oilfield well acidizing waste liquid treatment device of claim 2, wherein: the active screw rod (6) and the driven screw rod (18) are respectively provided with a sliding block which is used for installing an anode rod (8), a cathode rod (9) and an ozone conveying pipe (19) in a movable mode, and sliding grooves used for sliding of the sliding blocks are formed in the inner bottom surface of the decomposition box (1).

4. The oilfield well acidizing waste liquid treatment device of claim 1, wherein: deoiling device (4) are including oil strain tank (41), oil strain groove (42) and oil strain layer (43), oil strain tank (41) bottom opening and its fixed mounting have oil strain groove (42) on decomposition tank (1) inner wall, and horizontal installation has oil strain groove (42) on oil strain tank (41) inner wall that is located feed liquor pipe (2) below, and oil strain layer (43) rather than opening matching are installed to oil strain tank (41) bottom.

5. The oilfield well acidizing waste liquid treatment device of claim 1, wherein: the driving device (7) comprises a placing plate (71) and a driving motor (72), the placing plate (71) is fixedly installed on the outer wall of the decomposition box (1), the driving motor (72) is installed on the placing plate (71), and an output shaft of the driving motor (72) penetrates through the decomposition box (1) and then is connected with the driving screw rod (6).

6. The oilfield well acidizing waste liquid treatment device of claim 1, wherein: the stirring device (14) comprises a stirring motor (141), a stirring shaft (142) and stirring fins (143), wherein the stirring motor (141) is vertically arranged at the top of the neutralization tank (11), the output shaft of the stirring motor (141) is connected with the stirring shaft (142), the lower end of the stirring shaft (142) penetrates through the top of the neutralization tank (11) and extends into the neutralization tank (11), and the stirring fins (143) are arranged on the stirring shaft (142).

7. The oilfield well acidizing waste liquid treatment device of claim 6, wherein: the stirring fin (143) comprises a plurality of straight fins (1431) and a plurality of curved fins (1432), the straight fins (1431) are sequentially installed on the stirring shaft (142) in a staggered mode from top to bottom, and two ends of the curved fins (1432) are respectively installed at the upper end and the lower end of the stirring shaft (142).