Ultrasonic treatment device for oily sludge

Abstract

The utility model discloses an ultrasonic oily sludge treatment device and belongs to sludge treatment devices. Comprising a box body, a stirring device, an ultrasonic vibration plate, a heating assembly, a sludge settling tank, an inclined plate degreaser, an oil skimmer, a thermometer, a liquid level meter and a control system. The box body is divided into a left part and a right part, the left part is provided with a stirring device, an ultrasonic vibration plate and a heating assembly, the right part is provided with an inclined plate degreaser and an oil skimmer, and the bottom is provided with a sludge settling tank. The high-power ultrasonic vibration plate is used for treating the oily sludge, the effect of treating the oily sludge through ultrasonic mechanical vibration and acoustic cavitation is improved, the ultrasonic demulsification effect is improved, separation of petroleum in the sludge is enhanced, separated petroleum particles form large oil drops under the action of ultrasonic vibration, and the oil drops are separated from the oily sludge. The oil drops float upwards and overflow to the right side of the box body through the partition plate, oil is separated out through the inclined plate oil remover, and the sludge sinks and is collected and discharged through the sludge settling tank.

Description

Technical Field

[0001] The utility model belongs to the field of oily sludge treatment, and relates to a device for treating oily sludge using ultrasonic waves. Background Art

[0002] Oily sludge mainly comes from the process of oil drilling, storage, transportation, transit, refining and oily wastewater treatment. The main components of oily sludge are water, petroleum, soil in sludge and other components. Oily sludge has complex composition, is difficult to destabilize and degummed, is easy to produce odor, and requires explosion-proof disposal during treatment. The oil contained in it enters the water or soil, which will cause serious harm to the surrounding ecology, micro-ecological system and soil vegetation ecology.

[0003] At present, the technologies for treating oily sludge include: chemical treatment (heating alkaline washing, chemical cleaning, solvent extraction and chemical demulsification-dehydration, etc.), conditioning-mechanical separation, reinjection profile control technology, thermal treatment technology (drying incineration, pyrolysis, coking, etc.), biological method and other newly derived treatment methods (such as electrodynamic treatment technology, freeze-thaw treatment technology, capillary suction technology, etc.), etc., but each method has its own scope of application, technical advantages and disadvantages, and economic efficiency.

[0004] In order to meet the increasingly stringent environmental supervision requirements, the current treatment of oily sludge mostly adopts a combination of multiple treatment processes, which use the technical advantages of each process in different aspects to organically combine and achieve reasonable and efficient sludge treatment. Among them, ultrasonic assistance, as a new type of sludge pretreatment technology, can produce sponge effect and local heating on sludge to improve sludge dewatering ability and reduce sludge viscosity. At present, there is no device that uses ultrasonic wave alone and stably. Utility Model Content

[0005] The utility model aims to solve the problem of treating oily sludge and provides an ultrasonic-assisted device for treating oily sludge. The device is simple to operate and has a relatively high degree of automation, and can be used as an effective device for treating oily sludge.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An ultrasonic device for treating oily sludge, characterized in that it comprises a box (1), a stirring device, an ultrasonic vibration plate (20), a heating component (19), a sludge settling tank, an inclined plate deoiler (12), an oil skimmer (8), a thermometer (25), a float level gauge (3) and a control system (4); a vertical partition plate (5) and a partition plate (6) are arranged in the middle of the box (1); the partition plate (5) and the partition plate (6) are parallel and have a gap between them; the lower end of the partition plate (5) is sealed and fixed to the bottom of the box (1), and the top of the partition plate (5) is gapped with the top of the box (1); the lower end of the partition plate (6) is gapped with the bottom of the box (1), and the top of the partition plate (6) is sealed and fixed to the top of the box (1);

[0008] The first partition (5) and the second partition (6) divide the box into two parts, the left and the right. The side of the box (1) close to the first partition (5) is provided with a sludge inlet (23) and a water inlet (24), and the side close to the second partition (6) is provided with an oil outlet (10) and a water outlet (9).

[0009] The stirring device comprises a stirring motor (2) and a stirring assembly (22), wherein the stirring motor (2) is arranged on the top plate of the box body (1), the stirring assembly (22) is fixedly connected to the rotating shaft of the stirring motor (2), and the stirring assembly (22) extends deep into the box body (1) close to a partition (5);

[0010] There are two ultrasonic vibration plates (20) (parallel with a gap between the upper and lower parts or laid side by side on the left and right sides), which are arranged below the stirring assembly (22) in the box body (1).

[0011] The air flotation system components (18), such as an aeration device, are arranged at the lower part of the box (1) and below the ultrasonic vibration plate (20).

[0012] The heating component (19) is installed at the lower outer part of the box body (1), and both the left and right sides of the box body can be heated; the heating component (19) is provided with a heat medium inlet (21) and a heat medium outlet (26);

[0013] There are three sludge settling tanks arranged at the bottom of the box body (1), one of which is close to the first partition (5), that is, close to the left side of the first partition (5), and two of which are close to the second partition (6), that is, close to the right side of the second partition (6); the sludge settling tank adopts a trapezoidal tank structure that is wide at the top and narrow at the bottom; a steam purge port (16) is provided on the main connecting pipeline of the sludge outlet (15) at the bottom of the sludge settling tank;

[0014] An inclined plate oil remover (12) is provided in the casing (1) near the second partition (6), i.e., the inclined plate oil remover (12) is provided on the right side of the second partition (6); an oil skimmer (8) is provided above the inclined plate oil remover (12), and the oil inlet position of the oil skimmer (8) is 10 to 50 mm lower than the top of the first partition (5), preferably 15 mm lower; the oil outlet of the oil skimmer (8) is connected to the oil outlet (10) on the casing through a rotary joint (11).

[0015] A thermometer (25) and a liquid level meter (3) are arranged on the left side of the partition plate 1 (5) in the box body. The data of the thermometer (25) and the liquid level meter (3) can be displayed on the spot. At the same time, the stirring motor (2), the thermometer (25) and the liquid level meter (3) are also electrically connected to the control system (4). The heat medium inlet (21), the sludge inlet (23), the water inlet (24) and the like are also provided with electromagnetic valves which are electrically connected to the control system (4) respectively; the ultrasonic vibration plate is matched and connected to the ultrasonic device, and the ultrasonic device is electrically connected to the control system (4).

[0016] The beneficial effects of the utility model are: using a high-power ultrasonic vibration plate to treat oily sludge, improving the effect of ultrasonic mechanical vibration and acoustic cavitation in treating oily sludge, increasing the effect of ultrasonic demulsification, strengthening the separation of petroleum in sludge, and the separated petroleum particles form larger oil droplets under the action of ultrasonic vibration. The oil droplets float up and overflow to the right side of the box through the partition plate, and then pass through the inclined plate deoiler to separate the oil, while the sludge sinks and is collected and discharged through the sludge settling tank. The device is equipped with a control system, can achieve stable operation, is small in size, and saves investment. It is an effective device that can treat oily sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an ultrasonic treatment device for oily sludge;

[0018] Box body (1), stirring motor (2), liquid level meter (3), control system (4), partition plate 1 (5), partition plate 2 (6), steam inlet (7), oil skimmer (8), water outlet (9), oil outlet (10), rotary joint (11), inclined plate deoiler (12), sludge settling tank 3 (13), sludge settling tank 2 (14), sludge outlet (15), steam purge port (16), sludge settling tank 1 (17), air flotation system component (18), heating component (19), ultrasonic vibration plate (20), heat medium inlet (21), stirring component (22), sludge inlet (23), water inlet (24), thermometer (25), heat medium outlet (26). DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the embodiments, but the present invention is not limited to the following embodiments.

[0020] Example 1

[0021] Structure Figure 1 As shown, the utility model provides an ultrasonic device for treating oily sludge, with a design capacity of 2 t / d and dimensions of 2500×1500×2200. The device comprises a housing (1), a stirring device, an ultrasonic vibration plate (20), a heating component (19), a sludge settling tank, an inclined plate deoiler (12), an oil skimmer (8), a thermometer (25), a float liquid level gauge (3) and a control system (4). The housing (1) is provided with a partition plate 1 (5) and a partition plate 2 (6). The housing (1) is also provided with a sludge inlet (23), a water inlet (24), a heat medium inlet (21), an oil outlet (10), a water outlet (9), a sludge outlet (15), a steam purge port (16) and a heat medium outlet (26).

[0022] Furthermore, the partition plate 1 (5) is open at the top and closed at the bottom in the box body, and the partition plate 2 (6) is on the right side of the partition plate 1 (5), and the partition plate 2 (6) is open at the bottom and closed at the top.

[0023] Furthermore, the stirring device is arranged on the left side of the partition plate (5), and the stirring device comprises a stirring motor (2) and a stirring assembly (22), and the stirring motor (2) is arranged on the top plate of the box body (1).

[0024] Furthermore, there are two ultrasonic vibration plates (20), which are arranged below the stirring assembly (22) in the box (1).

[0025] Furthermore, the air flotation system component (18) is arranged at the lower part of the box (1) and below the ultrasonic vibration plate (20).

[0026] Furthermore, the heating component (19) is installed at the lower outer part of the box body (1), and both the left and right sides of the box body can be heated.

[0027] Furthermore, there are three sludge settling tanks arranged at the bottom of the box body (1), one on the left side of the partition plate (5) and two on the right side. The sludge settling tanks are designed to be wide at the top and narrow at the bottom.

[0028] Furthermore, a steam purge port (16) is provided on the main pipeline of the sludge outlet (15) of the sludge settling tank.

[0029] Furthermore, the inclined plate degreaser (12) is arranged on the right side of the second partition plate (6).

[0030] Furthermore, the oil skimmer (8) is arranged on the right side of the partition plate 2 (6), at the upper part of the box body, and the oil inlet position of the oil skimmer (8) is about 15 mm lower than the top of the partition plate 1 (5). The oil skimmer (8) is connected to the oil outlet pipe (10) through a rotary joint (11). The steam inlet (7) of the oil skimmer (8) is fixedly arranged on the top plate of the box body.

[0031] Furthermore, a thermometer (25) and a liquid level meter (3) are arranged on the left side of the partition plate 1 (5) in the box body, and the data of the thermometer (25) and the liquid level meter (3) can be displayed on site and can be remotely transmitted to the control system (4).

[0032] The working principle of the device is as follows: the oily sludge enters the device through the sludge inlet (23), and water is added at the water inlet (24) on the left side of the box body. The stirring component (22) stirs the sludge-water-oil mixture, and at the same time, the ultrasonic vibration plate (20) vibrates, relying on the ultrasonic vibration demulsification and acoustic cavitation functions to separate the oil droplets in the mixture. The oil droplets float up with the bubbles generated by the air flotation system (18) and overflow to the right side of the partition plate 1 (5). The oil-water mixture on the right side (containing a small amount of sludge) is further separated from the oil by the inclined plate deoiler (12), and the oil is finally separated by the oil skimmer (8) arranged on the liquid surface. The sludge under the sludge settling tank 3 (13), sludge settling tank 2 (14), and sludge settling tank 1 (17) on both sides of the partition plate 1 (5) is discharged regularly. If the sludge outlet pipe is blocked, it can be cleared by backblowing with the steam purge port (16). The temperature value fed back to the control system (4) by the thermometer (25) controls the opening and closing of the heating component (19) so that the device works at the most suitable temperature. The device is provided with a liquid level meter (3), and a control system (4) is capable of controlling the feeding, stirring, heating, ultrasonic treatment, water discharge, oil discharge, and mud discharge of the device by manual operation, so that the device can operate stably.

Claims

1. An ultrasonic treatment device for oily sludge, characterized in that: The invention comprises a box (1), a stirring device, an ultrasonic vibration plate (20), a heating component (19), a sludge settling tank, an inclined plate deoiler (12), an oil skimmer (8), a thermometer (25), a liquid level meter (3) and a control system (4); a vertical partition plate (5) and a partition plate (6) are arranged in the middle of the box (1); the partition plate (5) and the partition plate (6) are parallel and have a gap between them; the lower end of the partition plate (5) is sealed and fixed to the bottom of the box (1), and the top of the partition plate (5) is gapped with the top of the box (1); the lower end of the partition plate (6) is gapped with the bottom of the box (1), and the top of the partition plate (6) is sealed and fixed to the top of the box (1); The first partition (5) and the second partition (6) divide the box into two parts, the left and the right. The side of the box (1) close to the first partition (5) is provided with a sludge inlet (23) and a water inlet (24), and the side close to the second partition (6) is provided with an oil outlet (10) and a water outlet (9). The stirring device comprises a stirring motor (2) and a stirring assembly (22), wherein the stirring motor (2) is arranged on the top plate of the box body (1), the stirring assembly (22) is fixedly connected to the rotating shaft of the stirring motor (2), and the stirring assembly (22) extends deep into the box body (1) close to a partition (5); There are two ultrasonic vibration plates (20) arranged below the stirring assembly (22) in the box (1); the ultrasonic vibration plates (20) are arranged parallel to each other with a gap above and below or are arranged side by side left and right; An air flotation system component (18) is disposed at the lower part of the box body (1), and the air flotation system component (18) is located below the ultrasonic vibration plate (20); The heating component (19) is installed at the lower outer side of the box (1), and both the left and right sides of the box can be heated; the heating component (19) is provided with a heat medium inlet (21) and a heat medium outlet (26); There are three sludge settling tanks arranged at the bottom of the box body (1), one of which is close to the first partition (5), that is, close to the left side of the first partition (5), and two of which are close to the second partition (6), that is, close to the right side of the second partition (6); the sludge settling tank adopts a trapezoidal tank structure that is wide at the top and narrow at the bottom; a steam purge port (16) is provided on the main connecting pipeline of the sludge outlet (15) at the bottom of the sludge settling tank; An inclined plate oil remover (12) is provided in the casing (1) near the second partition (6), that is, the inclined plate oil remover (12) is provided on the right side of the second partition (6); an oil skimmer (8) is provided above the inclined plate oil remover (12), and the oil inlet position of the oil skimmer (8) is 10 to 50 mm lower than the top of the first partition (5); the oil outlet of the oil skimmer (8) is connected to the oil outlet (10) on the casing through a rotary joint (11); A thermometer (25) and a liquid level meter (3) are arranged on the left side of the partition plate 1 (5) in the box body. The data of the thermometer (25) and the liquid level meter (3) can be displayed on the spot. At the same time, the stirring motor (2), the thermometer (25) and the liquid level meter (3) are also electrically connected to the control system (4); the heat medium inlet (21), the sludge inlet (23) and the water inlet (24) are also provided with electromagnetic valves which are electrically connected to the control system (4) respectively; the ultrasonic vibration plate is matched and connected to the ultrasonic device, and the ultrasonic device is electrically connected to the control system (4).

2. The ultrasonic treatment device for oily sludge according to claim 1, characterized in that: The oil inlet of the oil skimmer (8) is located 15 mm lower than the top of the partition plate 1 (5).

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