Skid-mounted oily sludge treatment device

Abstract

The utility model discloses a skid-mounted oily sludge treatment device which comprises a base, a screw conveyor is mounted on the base, a storage box and a preheating box are further arranged beside the screw conveyor, the storage box is communicated with the preheating box, the preheating box is communicated with the screw conveyor, a fixed cavity is formed in the outer side wall of the screw conveyor, an outer cavity is formed in the outer side wall of the fixed cavity, and the outer cavity is communicated with the storage box. The fixed cavity is communicated with a heating structure of an external pyrolyzing furnace, the outer cavity is connected with a water source and further provided with an outlet, the outlet penetrates through the preheating box through a pipeline, a valve is arranged on the pipeline, a positioning cavity is formed in the storage box and communicated with the positioning cavity, and a liquid outlet is formed in the lower portion of the positioning cavity. According to the sludge drying device, heated high-temperature gas of the pyrolyzing furnace is used for conducting heat exchange drying on oily sludge in the spiral conveyor, energy saving is achieved, meanwhile, the high-temperature gas and waste heat can heat water, the heated water or steam penetrates through the preheating box to preheat the sludge, the subsequent drying efficiency is improved, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield sludge treatment, in particular to a skid-mounted oily sludge treatment device. Background Art

[0002] The existing utility model patent with patent number 202220379772.0 discloses a skid-mounted oily sludge recovery and processing device, which dries the oily sludge by heating the air and transporting the hot air to a dehydration box and a preheating box to ensure that it has a high pyrolysis efficiency when entering subsequent pyrolysis; however, the temperature of the heated hot air is lower than the heating gas of the pyrolysis furnace. Directly using a heater to heat the air has the problem of insufficient resource and energy utilization and waste compared to using the high-temperature gas of the pyrolysis furnace, and there is room for improvement. Utility Model Content

[0003] The purpose of the utility model is to provide a skid-mounted oily sludge treatment device which can utilize energy and ensure a better drying effect in view of the deficiencies existing in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model is a skid-mounted oily sludge treatment device, which adopts the following technical solutions:

[0005] A skid-mounted oily sludge treatment device comprises a base, a screw conveyor is installed on the base, a storage box and a preheating box are also arranged beside the screw conveyor, the storage box is connected to the preheating box, the preheating box is connected to the screw conveyor, a fixed cavity is arranged on the outer wall of the screw conveyor, an outer cavity is arranged on the outer wall of the fixed cavity, the fixed cavity is connected to the heating structure of an external pyrolysis furnace, the outer cavity is connected to a water source, the outer cavity is also provided with an outlet, the outlet passes through the preheating box through a pipeline, a valve is arranged on the pipeline, a positioning cavity is arranged inside the storage box, the pipeline is connected to the positioning cavity, and a liquid outlet is arranged at the lower part of the positioning cavity.

[0006] A further improvement of the skid-mounted oily sludge treatment device of the utility model is that a vent pipe is also arranged on the screw conveyor, the vent pipe also passes through the preheating box, and the vent pipe is communicated with the positioning cavity.

[0007] A further improvement of the skid-mounted oily sludge treatment device of the utility model is that the liquid outlet of the positioning cavity is connected to a spray structure, and the spray structure is used for spraying and cooling the pyrolysis gas.

[0008] A further improvement of the skid-mounted oily sludge treatment device of the utility model is that the air outlet arranged in the fixed cavity is connected to the external flue gas treatment equipment through a connecting pipe, and the connecting pipe passes through the storage box.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model utilizes the high-temperature gas heated by the pyrolysis furnace to perform heat exchange drying on the oily sludge in the screw conveyor, thereby achieving energy saving. Meanwhile, in addition to drying the oily sludge in the screw conveyor, the high-temperature gas also has waste heat to heat water. The heated water or water vapor passes through a preheating box to preheat the sludge, thereby improving subsequent drying efficiency and also saving energy. The heated water is then cooled by heat exchange in the positioning cavity and used as spray water, thereby further achieving energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] In the figure: 1 screw conveyor, 2 fixed cavity, 3 outer cavity, 4 preheating box, 5 pipeline, 6 ventilation pipe, 7 storage box, 8 positioning cavity. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1 As shown, a skid-mounted oily sludge treatment device includes a base, a screw conveyor 1 is installed on the base, a storage box 7 and a preheating box 4 are also provided beside the screw conveyor, the storage box is connected to the preheating box, the preheating box is connected to the screw conveyor, a fixed cavity 2 is provided on the outer wall of the screw conveyor, an outer cavity 3 is provided on the outer wall of the fixed cavity, the fixed cavity is connected to the heating structure of the external pyrolysis furnace, and the heating structure can be high-temperature flue gas generated by combustion, generally 350-550°C. The outer cavity is connected to a water source, and the outer cavity is also provided with an outlet, which passes through the preheating box through a pipe 5, and a valve is provided on the pipe. A positioning cavity 8 is provided inside the storage box, and the pipe is connected to the positioning cavity, and a liquid outlet is provided at the bottom of the positioning cavity.

[0015] The screw conveyor is also provided with a vent pipe 6, which also passes through the preheating box and is connected to the positioning chamber. The water vapor generated by the drying of the screw conveyor is finally placed in the positioning chamber through the vent pipe.

[0016] Furthermore, the liquid outlet of the positioning cavity is connected to a spray structure, and the spray structure is used to spray and cool the pyrolysis gas. The cooled water can be used as spray water to cool the pyrolysis gas.

[0017] Furthermore, the air outlet provided in the fixed cavity is connected to the external smoke treatment equipment through a connecting pipe, and the connecting pipe passes through the storage box.

[0018] The working principle of the utility model is as follows: the high-temperature flue gas heated by the pyrolysis furnace passes through the fixed cavity to realize heat exchange, and the sludge contained in the screw conveyor is dried. At the same time, the water in the outer cavity also exchanges heat with it. The water after heat exchange passes through the preheating box to realize the preheating of the sludge contained in the preheating box, and then enters the positioning cavity for cooling. At the same time, the water vapor generated by the drying in the screw conveyor is also placed in the positioning box through the preheating box for cooling, and is used as spray water after cooling, which ensures drying as a whole and realizes energy-saving utilization.

[0019] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A skid-mounted oily sludge treatment device, comprising a base, on which a screw conveyor is mounted, characterized in that: A storage box and a preheating box are also provided on the side of the screw conveyor. The storage box is connected to the preheating box, and the preheating box is connected to the screw conveyor. A fixed cavity is provided on the outer wall of the screw conveyor, and an outer cavity is provided on the outer wall of the fixed cavity. The fixed cavity is connected to the heating structure of an external pyrolysis furnace, and the outer cavity is connected to a water source. The outer cavity is also provided with an outlet, and the outlet passes through the preheating box through a pipeline, and a valve is provided on the pipeline. A positioning cavity is provided inside the storage box, and the pipeline is connected to the positioning cavity. A liquid outlet is provided at the lower part of the positioning cavity.

2. The skid-mounted oily sludge treatment device according to claim 1 is characterized in that: The screw conveyor is also provided with a ventilation pipe, which also passes through the preheating box and is connected to the positioning cavity.

3. The skid-mounted oily sludge treatment device according to claim 2 is characterized in that: The liquid outlet of the positioning cavity is connected to a spray structure, and the spray structure is used for spraying and cooling the pyrolysis gas.

4. The skid-mounted oily sludge treatment device according to claim 3 is characterized by: The air outlet provided in the fixed cavity is connected to the external smoke treatment equipment through a connecting pipe, and the connecting pipe passes through the storage box.

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