Oily sludge treatment equipment

Abstract

The utility model discloses oily sludge treatment equipment which comprises a pyrolyzing furnace, a heating structure is arranged on the pyrolyzing furnace, a combustion chamber is arranged beside the pyrolyzing furnace, the combustion chamber is connected to the heating structure, the pyrolyzing furnace is further connected to a feeding structure, the feeding structure comprises a preheating box, the preheating box is connected to a drying pry, the drying pry is connected to a storage box, and the storage box is connected to the pyrolyzing furnace. The drying pry comprises a spiral conveyor, a fixing cavity is formed in the outer wall of the spiral conveyor, the heating structure is connected to the fixing cavity, an outer cavity is formed in the outer side of the preheating box, an air outlet of the pyrolyzing furnace is connected to the outer cavity, the upper end of the outer cavity is connected to the spraying structure, and the upper end of the spraying structure is connected to the combustion chamber. According to the utility model, hot gas after heating and heat exchange of the pyrolyzing furnace is in indirect contact with materials before entering the pyrolyzing furnace to dry the materials, so that the pyrolyzing efficiency is improved, meanwhile, pyrolyzing gas exchanges heat with the materials in the preheating box, the drying effect is further improved, and energy conservation and utilization are realized while the pyrolyzing efficiency is integrally ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield sludge treatment, in particular to oily sludge treatment equipment. Background Art

[0002] Thermal desorption treatment technology is one of the main methods for treating oily sludge, and has the characteristics of thorough treatment of pollutants, fast speed, and high resource recycling. The existing utility model patent with patent number 202020018637.4 discloses a thermal desorption device for oily sludge, which heats the pre-drying skid and the thermal desorption skid to achieve thermal desorption while drying the material before thermal desorption to save energy. However, the material in the thermal desorption skid is in a flowing state and is connected to the pre-drying skid with flowing material inside. There is a problem of unsealed pyrolysis environment, that is, there is a problem of low pyrolysis efficiency, and there is room for improvement. Utility Model Content

[0003] The purpose of the utility model is to provide an oily sludge treatment device that can ensure the pyrolysis treatment effect and realize energy conservation and utilization in view of the deficiencies existing in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model is an oily sludge treatment equipment, which adopts the following technical solutions:

[0005] An oily sludge treatment device comprises a pyrolysis furnace, a heating structure is provided on the pyrolysis furnace, a combustion chamber is provided next to the pyrolysis furnace, the combustion chamber is connected to the heating structure, the pyrolysis furnace is also connected to a feeding structure, the feeding structure comprises a preheating box, the preheating box is connected to a drying skid, the drying skid is connected to a storage box, the storage box is connected to the pyrolysis furnace, the drying skid comprises a screw conveyor, a fixed cavity is provided on the outer wall of the screw conveyor, the heating structure is connected to the fixed cavity, an air outlet is also provided on the fixed cavity, an outer chamber is provided on the outer side of the preheating box, the air outlet of the pyrolysis furnace is connected to the outer chamber, the upper end of the outer chamber is connected to a spray structure, and the upper end of the spray structure is connected to the combustion chamber.

[0006] A further improvement of the oily sludge treatment equipment of the utility model is that the combustion chamber is also connected to the fixed cavity through a pipeline.

[0007] A further improvement of the oily sludge treatment equipment of the utility model is that a temperature monitoring instrument is arranged on the pipeline connecting the fixed cavity and the heating structure.

[0008] The further improvement of the oily sludge treatment equipment of the utility model is that a liquid outlet is arranged at the lower end of the outer chamber, and the liquid outlet and the liquid outlet arranged at the lower end of the spray structure are connected to the external separation box.

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

[0010] The utility model utilizes the hot gas after heating and heat exchange in the pyrolysis furnace to indirectly contact the material before entering the pyrolysis furnace to achieve drying thereof, thereby improving the pyrolysis efficiency. At the same time, the pyrolysis gas exchanges heat with the material in the preheating box to further improve the drying effect, thereby ensuring the overall pyrolysis efficiency while also achieving energy conservation and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] In the figure: 1 pyrolysis furnace, 2 heating structure, 3 combustion chamber, 4 preheating box, 5 drying skid, 6 fixed chamber, 7 storage box, 8 spray structure, 9 external chamber, 10 temperature monitor. 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, an oily sludge treatment equipment includes a pyrolysis furnace 1, a heating structure 2 is provided on the pyrolysis furnace, a combustion chamber 3 is provided beside the pyrolysis furnace, the combustion chamber is connected to the heating structure, the pyrolysis furnace is also connected to the feeding structure, the feeding structure includes a preheating box 4, the preheating box is connected to a drying skid 5, the drying skid is connected to a storage box 7, the storage box is connected to the pyrolysis furnace, the drying skid includes a screw conveyor, the outer wall of the screw conveyor is provided with a fixed cavity 6, the heating structure is connected to the fixed cavity, and the fixed cavity is also provided with an air outlet, an outer chamber 9 is provided outside the preheating box, the air outlet of the pyrolysis furnace is connected to the outer chamber, the upper end of the outer chamber is connected to a spray structure 8, and the upper end of the spray structure is connected to the combustion chamber. The spray structure includes a spray box, and a spray pipe is provided in the box.

[0015] The combustion chamber is also connected to the fixed chamber through a pipeline. A temperature monitor is provided on the pipeline connecting the fixed chamber and the heating structure. When the temperature fluctuation entering the fixed chamber is detected to be low, the gas directly enters the fixed chamber through the combustion chamber outlet to ensure the drying effect.

[0016] The lower end of the outer chamber is provided with a liquid outlet, and the liquid outlet and the liquid outlet arranged at the lower end of the spray structure are connected to the external separation box. The condensed oil-water mixture is collected and phase-separated.

[0017] The screw conveyor and the preheating box may be provided with water vapor outlets and used for the spraying structure to further achieve energy saving.

[0018] The working principle of the utility model is as follows: the combustion chamber burns high-temperature gas to heat the pyrolysis furnace, and the temperature at this time is generally 350-550°C. The gas after heat exchange enters the fixed cavity to dry the material in the screw conveyor, and then the gas can be discharged after desulfurization and denitrification treatment. The pyrolysis gas generated by the pyrolysis furnace also exchanges heat with the material to achieve material heating. The material is then placed in the screw conveyor and dried while being conveyed by the screw, which further improves the drying effect. After the pyrolysis gas is heat exchanged, it is sprayed to separate the oil-water mixture and the non-condensable gas, and the non-condensable gas enters the combustion chamber for combustion treatment.

[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. An oily sludge treatment equipment, characterized in that: It includes a pyrolysis furnace, a heating structure is provided on the pyrolysis furnace, a combustion chamber is provided next to the pyrolysis furnace, the combustion chamber is connected to the heating structure, the pyrolysis furnace is also connected to a feeding structure, the feeding structure includes a preheating box, the preheating box is connected to a drying skid, the drying skid is connected to a storage box, the storage box is connected to the pyrolysis furnace, the drying skid includes a screw conveyor, a fixed cavity is provided on the outer wall of the screw conveyor, the heating structure is connected to the fixed cavity, an air outlet is also provided on the fixed cavity, an outer chamber is provided on the outer side of the preheating box, the air outlet of the pyrolysis furnace is connected to the outer chamber, the upper end of the outer chamber is connected to a spray structure, and the upper end of the spray structure is connected to the combustion chamber.

2. The oily sludge treatment equipment according to claim 1, characterized in that: The combustion chamber is also connected to the fixed cavity through a pipeline.

3. The oily sludge treatment equipment according to claim 2, characterized in that: A temperature monitor is provided on the pipeline connecting the fixed cavity and the heating structure.

4. The oily sludge treatment equipment according to claim 3 is characterized in that: A liquid outlet is provided at the lower end of the outer chamber, and the liquid outlet and the liquid outlet arranged at the lower end of the spray structure are connected to the external separation box.

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