Oily sludge treatment device

Abstract

The utility model provides an oily sludge treatment device. The oily sludge treatment device comprises a preheating unit, a thermal desorption reactor, a dust removal unit, a condensation unit, a tail gas treatment unit, a dry powder processing unit, a cooling water storage unit and an oil storage tank, oily sludge enters the preheating unit, and the top of the preheating unit is connected with the bottom of the thermal desorption reactor; one side of the thermal desorption reactor is connected with the upper side surface of the dust removal unit; the lower part of the thermal desorption reactor is connected with the top of the dry powder processing unit; the upper part of the dedusting unit is connected with the bottom of the condensing unit; the lower part of the dedusting unit communicates with the top of the dry powder processing unit; the lower part of the condensing unit is connected with the cooling water storage unit, the upper part of the condensing unit is communicated with the bottom of the preheating unit, the bottom of the condensing unit is connected with an oil storage tank, and the top of the condensing unit is connected with the tail gas treatment unit through a pipeline. The oil separation device has the beneficial effects that oil can be relatively thoroughly separated from solid components, and the oil content in obtained solid residues is extremely low.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste treatment, in particular to an oily sludge treatment device. Background Art

[0002] Oily sludge is a solid waste generated during the production and operation of oil and gas drilling and petrochemical enterprises. Its main components include oil, water and solid matrix, which form a stable system, in which there are toxic and harmful substances such as heavy metals, sulfides, benzene series, phenols, etc. Due to its complex structure, difficult to degrade, toxicity and slow release, it has a significant impact on the environment such as soil and water sources. Oily sludge has been listed as hazardous solid waste (HW08) by the state and included in the hazardous waste management system.

[0003] my country produces a huge amount of oily sludge every year, and the disposal cost is high, having risen to 3,000 to 4,000 yuan per ton. However, about 10% to 30% of the oil in the sludge cannot be recycled, exacerbating the waste of petroleum resources.

[0004] Considering that my country's oily sludge treatment technology started late and no technology has been widely used in the country, it is particularly important to develop a technology that can meet environmental protection requirements and efficiently treat oily sludge. Utility Model Content

[0005] In view of this, the utility model aims to propose an oily sludge treatment device, which separates and extracts liquid oil and solid dry powder in the oily sludge through friction heat generation, realizes the resource utilization and harmless treatment of waste, promotes carbon circulation, solves the oily sludge problem and improves energy utilization efficiency, and promotes the development of the waste treatment industry.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] An oily sludge treatment device comprises a preheating unit, a thermal desorption reactor, a dust removal unit, a condensation unit, a tail gas treatment unit, a dry powder processing unit, a cooling water storage unit, and an oil storage tank;

[0008] The oily sludge enters the preheating unit, and the top of the preheating unit is connected to the bottom of the thermal desorption reactor for conveying the oily sludge;

[0009] One side of the thermal desorption reactor is connected to the upper side of the dust removal unit for conveying high-temperature oil-containing gas;

[0010] The lower part of the thermal desorption reactor is connected to the top of the dry powder processing unit through a conveyor belt.

[0011] The upper part of the dust removal unit is connected to the bottom of the condensation unit to transport the oil-containing gas after dust removal.

[0012] The lower part of the dust removal unit is connected to the top of the dry powder processing unit and is used to transport the dust removed from the gas.

[0013] The lower part of the condensing unit is connected to the cooling water storage unit, the upper part of the condensing unit is connected to the bottom of the preheating unit, the bottom of the condensing unit is connected to the oil storage tank, and the top of the condensing unit is connected to the exhaust gas treatment unit by a pipeline.

[0014] Furthermore, a feed pipe is provided on one side of the preheating unit, a delivery pump is provided on the feed pipe, and a raw material feed port is provided at the end of the feed pipe;

[0015] The feed pipe is L-shaped, the raw material feed port is arranged at the vertical end of the feed pipe, and the preheating unit is arranged at the horizontal end of the feed pipe.

[0016] Furthermore, the upper part of the preheating unit is connected to the thermal desorption reactor through an output pipeline, and a feed pump is provided on the output pipeline.

[0017] Furthermore, the thermal desorption reactor comprises a shell and a hammer mill mechanism, and the hammer mill mechanism is arranged in the shell;

[0018] The hammer mill mechanism includes a power source and a rotating plate; the mounting end of the power source is arranged on one side of the housing through a mounting plate, a rotating rod is arranged on the output end of the power source, and the rotating plates are evenly arranged on the rotating rod;

[0019] The bottom of the shell is provided with a plurality of supporting rods. The present invention drives the hammer mill mechanism to rotate through an electric motor, drives the oily sludge to move, generates heat through the friction between the sludge particles, and completes the thermal desorption of the oil.

[0020] Furthermore, the middle part of the rotating piece is connected to the rotating rod, and the rotating piece includes a plurality of blades and a circular plate. The plurality of blades are arranged on the circular plate along the circumference, and an extension plate is arranged in the middle part of the blade.

[0021] Furthermore, a pipe connected to the thermal desorption reactor is provided on one side of the top of the preheating unit;

[0022] A discharge port is arranged at the other side of the bottom of the thermal desorption reactor, a conveyor belt is arranged below the discharge port of the thermal desorption reactor, and the thermal desorption reactor is connected to the dry powder processing unit through the conveyor belt.

[0023] Furthermore, one side of the upper portion of the thermal desorption reactor is connected to the dust removal unit through a connecting pipe.

[0024] Furthermore, the preheating unit is a pipeline heat exchanger.

[0025] Furthermore, the dust removal unit is a cyclone dust collector.

[0026] Furthermore, the condensing unit is a coil condenser.

[0027] Compared with the prior art, the oily sludge treatment device described in the utility model has the following advantages:

[0028] 1. The present application can improve the separation effect of oil in oily sludge. Through the operation of the hammer mill mechanism, the particles in the oily sludge rub against each other, the particle diameter is reduced, and the specific surface area is increased, so that the oil can be separated from the solid component more thoroughly, and the oil content in the obtained solid residue is extremely low.

[0029] 2. This application reduces the equipment requirements for the thermal desorption process. The hammer mill mechanism converts kinetic energy into internal energy to achieve the purpose of heating, avoiding direct heating with high-temperature media. There is no coal-fired or gas-fired equipment. The entire system is an open system without a pressure vessel, which reduces the process requirements for the equipment.

[0030] 3. The energy utilization rate of the present application is high. Using condensed water to preheat the raw materials not only increases the initial temperature of the raw materials entering the reactor and improves the reaction efficiency, but also saves the cooling tower and avoids the evaporation loss of cooling water during the spray cooling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0032] Figure 1 This is an overall schematic diagram of an oily sludge treatment device according to an embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of the rotating sheet according to an embodiment of the utility model;

[0034] Figure 3 This is a connection diagram of an oily sludge treatment device according to an embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram of a thermal desorption reactor described in an embodiment of the present utility model.

[0036] Description of reference numerals:

[0037] 1. Raw material feed port; 2. Delivery pump; 3. Preheating unit; 4. Thermal desorption reactor; 5. Dust removal unit; 6. Condensation unit; 7. Tail gas treatment unit; 8. Dry powder processing unit; 9. Cooling water storage unit; 10. Oil storage tank; 11. Conveyor belt; 12. Blades; 13. Circular plate; 14. Extension plate; 15. Feed pump. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0040] like Figures 1 to 4 As shown, an oily sludge treatment device includes a preheating unit 3, a thermal desorption reactor 4, a dust removal unit 5, a condensation unit 6, a tail gas treatment unit 7, a dry powder processing unit 8, a cooling water storage unit 9, and an oil storage tank 10; the oily sludge enters the preheating unit 3, and the top of the preheating unit 3 is connected to the bottom of the thermal desorption reactor 4 for conveying the oily sludge; one side of the thermal desorption reactor 4 is connected to the upper side of the dust removal unit 5 for conveying high-temperature oily gas; the bottom of the thermal desorption reactor 4 is connected to the top of the dry powder processing unit 8. The upper part of the dust removal unit 5 is connected to the bottom of the condensation unit 6 for conveying the oily gas after dust removal, and the lower part of the dust removal unit 5 is connected to the top of the dry powder processing unit 8 for conveying the dust removed from the gas. The lower part of the condensing unit 6 is connected to the cooling water storage unit, the upper part of the condensing unit 6 is connected to the bottom of the preheating unit 3, the bottom of the condensing unit 6 is connected to the oil storage tank 10, the top of the condensing unit 6 is connected to the tail gas treatment unit 7 by a pipeline, a feed pipeline is provided on one side of the preheating unit 3, a delivery pump 2 is provided on the feed pipeline, and a raw material feed port 1 is provided at the end of the feed pipe; the feed pipe is L-shaped, the raw material feed port 1 is arranged at the vertical end of the feed pipe, and the preheating unit 3 is arranged at the horizontal end of the feed pipe. The upper part of the preheating unit 3 is connected to the thermal desorption reactor 4 through an output pipeline, and a feed pump 15 is provided on the output pipeline.

[0041] The thermal desorption reactor 4 includes a shell and a hammer mill mechanism, which is arranged in the shell; the hammer mill mechanism includes a power source and a rotating plate; the mounting end of the power source is arranged on one side of the shell through a mounting plate, a rotating rod is arranged on the output end of the power source, and the rotating plates are evenly arranged on the rotating rod; a plurality of support rods are arranged at the bottom of the shell. The present application drives the hammer mill mechanism to rotate by an electric motor, drives the oil-containing sludge to move, generates heat by friction between the sludge particles, and completes the thermal desorption of the oil. The middle part of the rotating plate is connected to the rotating rod, and the rotating plate includes a plurality of blades 12 and a circular plate 13. The plurality of blades 12 are arranged on the circular plate 13 along the circumference, and an extension plate 14 is arranged in the middle part of the blade 12.

[0042] A pipe connected to the thermal desorption reactor 4 is provided on one side of the top of the preheating unit 3; a discharge port is provided on the other side of the bottom of the thermal desorption reactor 4, and a conveyor belt 11 is provided below the discharge port of the thermal desorption reactor 4. The thermal desorption reactor 4 is connected to the dry powder processing unit 8 through the conveyor belt 11. One side of the upper part of the thermal desorption reactor 4 is connected to the dust removal unit 5 through a connecting pipe.

[0043] In a specific implementation, the preheating unit 3 is a pipeline heat exchanger.

[0044] In a specific implementation, the dust removal unit 5 is a cyclone dust collector.

[0045] In a specific implementation, the condensing unit 6 is a coil condenser.

[0046] In a specific implementation, the oily sludge enters the system through the feed port and is pressurized and transported by the delivery pump 2 to the preheating unit 3 for preheating; the oily sludge in the preheating unit 3 is transported to the thermal desorption unit 4 by the feed pump 15 for thermal desorption reaction;

[0047] The oil in the oily sludge is gasified at high temperature and separated from the solid dry powder. The oil enters the dust removal unit 5 with the high-temperature gas, and the solid dry powder enters the dry powder processing unit 8. The particulate matter in the gas is separated from the gas in the dust removal unit 5 and enters the dry powder processing unit 8. The dry powder processing unit 8 makes the obtained dust into a fracturing proppant. The gas after dust removal enters the condensation unit 6, and after condensation, it enters the oil storage tank 10 for collection and recovery. The gas part enters the tail gas treatment unit 7 and is discharged after being treated to meet the standards. The condensed water of the condensation unit 6 is input from the cooling water storage unit. After the oil is condensed, the temperature rises. The hot water enters the preheating unit 3 from the condensation unit 6 and serves as a heat source to preheat the raw materials and achieve the cooling effect at the same time, and then returns to the condensed water storage unit.

[0048] This application uses friction heating technology driven by electric energy to quickly heat the oil in the sludge to the boiling point of the liquid phase, so that it can be condensed and recovered as product oil. The solid phase in the sludge can also be processed into "fracture proppant for drilling" and reused in the natural gas extraction process, realizing the full-chain resource utilization of oil-containing sludge. The core parts of the device include a friction heat desorption reactor, an oil and gas separation device, a dry powder preparation and a heat recovery system. The entire device is compact in design and easy to operate. By promoting dynamic friction between sludge particles, efficiently utilizing waste heat, recovering oil and preparing fracturing proppants, it not only achieves efficient treatment and resource utilization of oil-containing sludge, but also significantly improves the deoiling efficiency and overall energy efficiency.

[0049] This device has significant environmental and economic benefits. At the same time, the design of the device also meets the requirements of energy conservation and emission reduction, can achieve the reduction, harmlessness and resource utilization of oily sludge, promote the development of circular economy, and has broad market application prospects.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oily sludge treatment device, characterized in that: It comprises a preheating unit (3), a thermal desorption reactor (4), a dust removal unit (5), a condensation unit (6), an exhaust gas treatment unit (7), a dry powder processing unit (8), a cooling water storage unit (9), and an oil storage tank (10); The oily sludge enters the preheating unit (3), the top of the preheating unit (3) is connected to the bottom of the thermal desorption reactor (4); one side of the thermal desorption reactor (4) is connected to the upper side of the dust removal unit (5); the bottom of the thermal desorption reactor (4) is connected to the top of the dry powder processing unit (8); the upper part of the dust removal unit (5) is connected to the bottom of the condensation unit (6); the lower part of the dust removal unit (5) is connected to the top of the dry powder processing unit (8); the lower part of the condensation unit (6) is connected to the cooling water storage unit, the upper part of the condensation unit (6) is connected to the bottom of the preheating unit (3), the bottom of the condensation unit (6) is connected to the oil storage tank (10), and the top of the condensation unit (6) is connected to the exhaust gas treatment unit (7) through a pipeline.

2. The oily sludge treatment device according to claim 1, characterized in that: A feed pipe is provided on one side of the preheating unit (3), a delivery pump (2) is provided on the feed pipe, and a raw material feed port (1) is provided at the end of the feed pipe; The feed pipe is L-shaped, the raw material feed port (1) is arranged at the vertical end of the feed pipe, and the preheating unit (3) is arranged at the horizontal end of the feed pipe.

3. The oily sludge treatment device according to claim 1, characterized in that: The upper part of the preheating unit (3) is connected to the thermal desorption reactor (4) via an output pipeline, and a feed pump (15) is provided on the output pipeline.

4. The oily sludge treatment device according to claim 1, characterized in that: The thermal desorption reactor (4) comprises a shell and a hammer mill mechanism, wherein the hammer mill mechanism is arranged in the shell; The hammer mill mechanism includes a power source and a rotating plate; the mounting end of the power source is arranged on one side of the housing through a mounting plate, a rotating rod is arranged on the output end of the power source, and the rotating plates are evenly arranged on the rotating rod; A plurality of support rods are arranged at the bottom of the shell.

5. The oily sludge treatment device according to claim 4, characterized in that: The middle part of the rotating piece is connected to the rotating rod. The rotating piece comprises a plurality of blades (12) and a circular plate (13). The plurality of blades (12) are arranged on the circular plate (13) along the circumference. An extension plate (14) is arranged in the middle part of the blades (12).

6. The oily sludge treatment device according to claim 4, characterized in that: A pipeline connected to the thermal desorption reactor (4) is provided on one side of the bottom of the preheating unit (3); A discharge port is provided at the other side of the bottom of the thermal desorption reactor (4), a conveyor belt (11) is provided below the discharge port of the thermal desorption reactor (4), and the thermal desorption reactor (4) is connected to the dry powder processing unit (8) via the conveyor belt (11).

7. The oily sludge treatment device according to claim 1, characterized in that: One side of the upper portion of the thermal desorption reactor (4) is connected to the dust removal unit (5) via a connecting pipe.

8. The oily sludge treatment device according to claim 1, characterized in that: The preheating unit (3) is a pipeline heat exchanger.

9. The oily sludge treatment device according to claim 1, characterized in that: The dust removal unit (5) is a cyclone dust collector.

10. The oily sludge treatment device according to claim 1, characterized in that: The condensing unit (6) is a coil condenser.

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