CN111777313A - A skid-mounted oily sludge treatment equipment - Google Patents

Abstract

The invention discloses a skid-mounted oily sludge treatment equipment, comprising a box body and a control cabinet arranged on the outer side wall of the box; the box body is divided into a left stirring area, an oil-water separation area on the upper right side and a right Sludge dewatering zone at the lower part of the side; a mud inlet pipe is arranged at the lower part of the side wall of the stirring zone, a stirring device is arranged in the stirring zone, a dosing port is arranged on the top of the stirring zone, and an oil separator is arranged on the upper part of the side wall of the stirring zone, and the oil separator is separated from the oil and water. A communication port is arranged between the separation areas; an oil-water separator is arranged in the oil-water separation area, and the oil-water separation area is divided into an oil storage area and a water storage area from top to bottom. A water outlet is arranged on the side wall of the water area; a mud guide pipe is arranged between the upper part of the side wall of the mixing area and the sludge dewatering area. The structure of the equipment is scientifically designed, with a small footprint, suitable for field operations and emergency treatment of sudden pollution incidents. .

Description

A skid-mounted oily sludge treatment equipment

technical field

The invention relates to the field of oily sludge treatment, in particular to a skid-mounted oily sludge treatment equipment.

Background technique

The annual output of oily sludge in my country has exceeded 8 million tons, and it shows an increasing trend year by year. Oily sludge mainly comes from the process of crude oil extraction, crude oil refining and oilfield gathering and transportation. , is one of the main pollutants in the petrochemical industry, and has been listed as HW08 hazardous waste in the "National Hazardous Waste List". The technical standards and specifications issued by our country point out that "residual oil, waste oil, oil-based mud, oily garbage, and oily sludge from tank cleaning should be recovered from crude oil and natural gas extraction", and "oily sludge and oily sludge with an oil content greater than 5% should be recycled." The sand should be recycled” and “the oil content of the oil sediment should be less than 2% after the oil sand is separated”.

Oily sludge treatment methods commonly used at home and abroad mainly include incineration, thermal desorption, extraction, chemical hot washing, biological treatment, landfill, etc. Based on the above treatment methods, researchers have developed oily sludge pyrolysis devices. , incineration device, filter press device and other equipment for reduction and resource utilization. For example, Chinese patent CN110425547A discloses a complete set of equipment for oily sludge treatment, which can realize the reduction and harmlessness of oily sludge. high cost;

Chinese patent CN210237429U provides a sludge dewatering equipment for sewage treatment. The equipment is composed of a four-stage cylinder and a dewatering filter bag, which is only suitable for municipal sludge dewatering, and has poor dewatering effect on oily sludge;

Chinese patent CN209081694U discloses a skid-mounted device for oily sludge treatment. The device consists of a base, a sludge blender, a screw conveyor, an upper hopper, and one to four-stage pyrolysis reactors. It has the defects of complex structure and high energy consumption. .

The problem of environmental pollution caused by oily sludge has attracted widespread attention at home and abroad. However, the above-mentioned sludge treatment technologies and devices have disadvantages such as poor demulsification effect, high treatment cost, low treatment efficiency, and inconvenient transportation.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the shortcomings of the prior art, and to provide a skid-mounted oily sludge treatment equipment with scientific structure design, small footprint, and suitable for field operations and emergency treatment of sudden pollution incidents.

In order to realize the above-mentioned purpose of the invention, the technical scheme of the present invention is:

A skid-mounted oily sludge treatment equipment includes a box body and a control cabinet arranged on the outer side wall of the box; the box body is divided into a left stirring area, an oil-water separation area on the upper right side, and a sewage separation area on the lower right side. Mud dewatering zone; a mud inlet pipe is set at the lower part of the side wall of the stirring zone, a stirring device is set in the stirring zone, a dosing port is set on the top of the stirring zone, and an oil separator is set on the upper part of the side wall of the stirring zone, between the oil separator and the oil-water separation zone A communication port is provided; an oil-water separator is arranged in the oil-water separation area, and the oil-water separation area is respectively an oil storage area and a water storage area from top to bottom, and an oil outlet is arranged on the side wall of the oil storage area, and the side wall of the water storage area is A water outlet is arranged; a mud guiding pipe is arranged between the middle and upper part of the side wall of the stirring zone and the sludge dewatering zone.

Preferably, a filter screen is arranged in the communication port; the bottom of the communication port is flush with the bottom of the oil separation groove.

Preferably, the filter screen is a ceramic flat membrane element or a flat membrane element made of a corrosion-resistant metal material; the pore size of the filter screen is 1-3 μm.

Preferably, a baffle plate is arranged in the sludge dewatering area, and the baffle plate divides the sludge dewatering area into an upper filter press area and a lower mud storage area; a filter press is arranged in the filter press area, and the The mud guide pipe is connected with the inlet of the filter press; one side of the baffle plate close to the stirring area is provided with a drainage groove, and the other side is provided with a mud discharge port, and the mud discharge port is communicated with the mud storage area; the side of the mud storage area A mud outlet is provided at the bottom of the wall.

Preferably, the filter press is a plate and frame filter press.

Preferably, the box body is made of stainless steel, the length is not more than 12m, and the length-width-height ratio is 3-10:2:3, and the most preferred length-width-height ratio is 6:2:3; the left and right side walls of the box body The lower end is also provided with lifting lugs.

Preferably, a dosing pump is provided at the dosing port, and the dosing pump is connected to the control cabinet.

The beneficial effects of the present invention are:

First: This equipment is a skid-mounted box structure, which has the advantages of simple process, compact structure, convenient transportation, small footprint, strong mobility, and convenient operation and maintenance;

Second: This equipment organically combines physical pressure filtration and chemical demulsification treatment technology, which effectively improves the dewatering effect of oil sludge, and at the same time, the treated oil pollution can be recycled;

Third: This equipment conducts centralized or decentralized treatment of oily sludge, and is equipped with lifting ears for easy hoisting. It is suitable for field operations and emergency treatment of sudden pollution events. The treated sludge meets the "Pollution Control Standard for Comprehensive Utilization of Oily Sludge in Oil Fields" And the treated sludge can be used for paving, brick making, etc., which can effectively solve the problem of environmental pollution caused by oily sludge in oil fields.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

In the figure: 10 is the box, 11 is the stirring area, 11.1 is the mud inlet pipe, 11.2 is the stirring device, 11.3 is the dosing port, 11.4 is the oil separator, 11.5 is the communication port, 11.6 is the mud guide pipe, and 12 is the oil-water separation 12.1 is the oil storage area, 12.1.1 is the oil outlet, 12.2 is the water storage area, 12.2.1 is the water outlet, 13 is the sludge dewatering area, 13.1 is the filter press area, 13.2 is the mud storage area, and 14 is the hanging area. Ears, 20 is the control cabinet, 30 is the filter screen, 40 is the baffle, 40.1 is the drain, 40.2 is the mud discharge port, 50 is the filter press, and 60 is the dosing pump.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

A skid-mounted oily sludge treatment equipment includes a box body 10 and a control cabinet 20 arranged on the outer side wall of the box body 10; the box body 10 is divided into a stirring area 11 on the left side and an oil-water separation area on the upper right side. 12 and the sludge dewatering zone 13 on the lower right side; the lower part of the side wall of the stirring zone 11 is provided with a mud inlet pipe 11.1, a stirring device 11.2 is set in the stirring zone 11, a dosing port 11.3 is set on the top of the stirring zone 11, and the inner side wall of the stirring zone 11 An oil separation groove 11.4 is set on the upper part, and a communication port 11.5 is set between the oil separation groove 11.4 and the oil-water separation zone 12; an oil-water separator (not shown in the figure) is set in the oil-water separation zone 12, and the oil-water separation zone 12 is from top to The bottom is an oil storage area 12.1 and a water storage area 12.2 respectively. The oil storage area 12.1 is provided with an oil outlet 12.1.1 on the side wall, and the water storage area 12.2 is provided with a water outlet 12.2.1 on the side wall. A mud guiding pipe 11.6 is arranged between the upper part and the sludge dewatering zone 13; the stirring device 11.2 and the oil-water separator are both in the prior art and will not be repeated here.

Preferably, a filter screen 30 is arranged in the communication port 11.5; the bottom of the communication port 11.5 is flush with the bottom of the oil separation groove 11.4.

Preferably, the filter screen 30 is a ceramic flat membrane element or a flat membrane element made of a corrosion-resistant metal material; the pore size of the filter screen 30 is 1-3 μm.

Preferably, a baffle plate 40 is arranged in the sludge dewatering zone 13, and the baffle plate 40 divides the sludge dewatering zone 13 into an upper filter press zone 13.1 and a lower mud storage zone 13.2; A filter press 50 is provided, and the mud guide pipe 11.6 is connected to the inlet of the filter press 50 (not shown in the figure); the baffle 40 is provided with a drainage groove 40.1 on one side close to the stirring area 11, and a drain on the other side. Mud port 40.2, the mud discharge port 40.2 communicates with the mud storage area 13.2; a mud outlet is provided at the bottom of the side wall of the mud storage area 13.2 (not shown in the figure).

Preferably, the filter press 50 is a plate-and-frame filter press, most preferably a plate-and-frame filter press with a scraper at the bottom, which is the prior art and will not be repeated here.

Preferably, the box body 10 is made of stainless steel, the length is not more than 12m, and the length-width-height ratio is 3-10:2:3, and the most preferred length-width-height ratio is 6:2:3; the box body 10 is about The lower end of the side wall is also provided with a lifting lug 14 .

Preferably, a dosing pump 60 is provided at the dosing port 11.3, and the dosing pump 60 is connected to the control cabinet 20. The control cabinet 20 is in the prior art and can be purchased directly from the market. Repeat.

A solenoid valve can be installed on the mud inlet pipe 11.1, the oil outlet 12.1.1 and the water outlet 12.2.1 of the device, and the solenoid valve can be connected with the control cabinet 20 to realize automatic control. This is the prior art and will not be repeated here. Repeat.

The working principle of this equipment:

The oily sludge enters the stirring area 11 from the mud inlet pipe 11.1, the stirring device 11 is turned on, and the chemical demulsification is realized by adding the chemical through the dosing pump 60. After the demulsification, the oil-water mixed layer in the upper part enters the oil-water separation area 12. Under the action of oil-water separation, the waste oil in the upper layer is discharged from the oil outlet 12.1.1 on the side wall of the oil storage area 12.1, and can be directly connected with the subsequent sewage oil purifier; the waste water in the lower layer is discharged from the oil outlet 12. The water outlet 12.2.1 is discharged and can be directly connected to the subsequent sewage treatment plant; the sludge in the stirring zone 11 enters the filter press 50 from the mud guide pipe 11.6 for pressure filtration, and the pressure filtrate is discharged from the drainage tank 40.1. The mud enters the mud storage area 13.2 from the mud discharge port 40.2.

The described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims (7)

1. A skid-mounted oily sludge treatment equipment, comprising a box body (10) and a control cabinet (20) arranged on the outer side wall of the box body (10); it is characterized in that: the box body (10) is divided into The stirring zone (11) on the left, the oil-water separation zone (12) on the upper right side, and the sludge dewatering zone (13) on the lower right side; A stirring device (11.2) is arranged in the stirring area (11), a dosing port (11.3) is arranged on the top of the stirring area (11), and an oil separator (11.4) is arranged on the upper part of the inner side wall of the stirring zone (11). A communication port (11.5) is arranged between the oil-water separation zones (12); an oil-water separator is arranged in the oil-water separation zone (12), and the oil-water separation zone (12) from top to bottom is an oil storage zone (12.1) and a storage zone (12.1) respectively. In the water area (12.2), an oil outlet (12.1.1) is arranged on the side wall of the oil storage area (12.1), and a water outlet (12.2.1) is arranged on the side wall of the water storage area (12.2); the stirring area (11) A mud guiding pipe (11.6) is arranged between the middle and upper part of the side wall and the sludge dewatering zone (13). 2. A skid-mounted oily sludge treatment equipment according to claim 1, characterized in that: a filter screen (30) is arranged in the communication port (11.5); the bottom of the communication port (11.5) is connected to an oil separation groove (11.4) Bottom flush. 3. A skid-mounted oily sludge treatment equipment according to claim 2, characterized in that: the filter screen (30) is a ceramic flat membrane element or a flat membrane element made of a corrosion-resistant metal material; The pore size of the filter screen (30) is 1-3 μm. 4. The skid-mounted oily sludge treatment equipment according to claim 1, wherein a baffle plate (40) is arranged in the sludge dewatering zone (13), and the baffle plate (40) removes the sludge The mud dewatering area (13) is divided into an upper filter press area (13.1) and a lower mud storage area (13.2); a filter press (50) is arranged in the filter press area (13.1), and the mud guide pipe (11.6 ) is connected to the inlet of the filter press (50); the baffle (40) is provided with a drainage groove (40.1) on one side close to the stirring area (11), and a mud discharge port (40.2) on the other side, the mud discharge The port (40.2) is communicated with the mud storage area (13.2); a mud outlet is provided at the bottom of the side wall of the mud storage area (13.2). 5 . The skid-mounted oily sludge treatment equipment according to claim 1 , wherein the filter press ( 50 ) is a plate-and-frame filter press. 6 . 6. A skid-mounted oily sludge treatment equipment according to claim 1, characterized in that: the box body (10) is made of stainless steel, the length is not more than 12m, and the length-width-height ratio is 3-10: 2:3; the lower ends of the left and right side walls of the box body (10) are further provided with lifting ears (14). 7. A skid-mounted oily sludge treatment equipment according to claim 1, characterized in that: a dosing pump (60) is provided at the dosing port (11.3), and the dosing pump (60) is connected to the dosing port (11.3). The control cabinet (20) is connected.

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