Petroleum oil sludge purification treatment system

Abstract

The utility model relates to a petroleum oil sludge purification treatment system which comprises an air heating furnace for providing hot air and a drying furnace for drying oil sludge, an air outlet of the air heating furnace is communicated with an air inlet of the drying furnace, an air outlet of the drying furnace is communicated with an oil-water separator, and an oil discharge outlet of the oil-water separator is communicated with an oil storage device. And a gas outlet of the oil-water separator is communicated with a condenser. The petroleum sludge purification treatment system disclosed by the utility model is simple and compact in structure, short in treatment flow, easy to operate and maintain, capable of realizing harmless and resourceful treatment of petroleum sludge, environment-friendly and good in economic effect.

Description

Technical Field

[0001] The utility model relates to a petroleum sludge purification treatment system, in particular to a system for drying petroleum sludge to recover valuable substances in the sludge, and belongs to the field of solid waste treatment. Background Art

[0002] Petroleum sludge is a solid pollutant, with an oil content of 5-50% and a water content of 14-80%. It also contains various chemical additives, microorganisms, insect eggs, polycyclic aromatic hydrocarbons and other harmful substances (see: Xie Zhihai, Cai Qing, Gong De, et al. Comprehensive Treatment Technology of Petroleum Sludge [J]. Chemical Industry Progress, 2011 (S1): 3. DOI: CNKI: SUN: HGJZ.0.2011-S1-125.). Open-air storage will affect the ecological environment. There is also a way to add additives and curing agents to petroleum sludge to make sludge balls and use them as fuel. The implementation of the above treatment measures is not very ideal. Utility Model Content

[0003] The utility model aims to provide a petroleum sludge purification treatment system to achieve harmless treatment of the sludge in view of the deficiencies of the prior art.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The petroleum sludge purification treatment system includes an air heating furnace for providing hot air and a drying furnace for drying the sludge. The air outlet of the air heating furnace is connected to the air inlet of the drying furnace, the air outlet of the drying furnace is connected to an oil-water separator, the oil discharge port of the oil-water separator is connected to an oil storage device, and the air outlet of the oil-water separator is connected to a condenser.

[0006] In this way, the air heating furnace can provide hot air for the drying furnace, and the hot air can be input into the drying furnace to dry the oil sludge input into the drying furnace, so that the oil, water and organic matter in the oil sludge form gas and enter the oil-water separator. The remaining dried silt can be discharged from the bottom of the drying furnace. Due to the hot air drying treatment, the dried silt is in a basically harmless state; after the gas entering the oil-water separator is separated from the oil, the oil is separated from the gas, and enters the oil storage device after enrichment; then, the remaining gas enters the condenser, and the water condenses in the condenser to form condensed water. The remaining gas is combustible gas, which can be further collected or discharged into the subsequent waste heat furnace for utilization. In this way, the oil sludge is harmlessly treated, and the oil and water in the oil sludge can be separated and recovered, which has certain economic benefits.

[0007] Optionally, the oil storage device includes a first oil tank and a second oil tank which are connected in sequence, and an inlet of the first oil tank is connected to an oil discharge port of the oil-water separator.

[0008] Optionally, the condenser is an indirect condenser.

[0009] Optionally, the condenser has a gas inlet, a condensate outlet, a gas outlet, a coolant inlet and a coolant outlet, the gas inlet is connected to the gas outlet of the oil-water separator, the condensate outlet is connected to a cold water pool, the cold water pool is connected to the coolant inlet, and the coolant outlet is connected to the cold water pool.

[0010] Optionally, the gas outlet is connected to a waste heat furnace.

[0011] Optionally, a cooler is provided on the pipeline between the drying furnace and the oil-water separator. Optionally, the cooler is an indirect cooler.

[0012] The petroleum sludge purification treatment system of the utility model has a simple and compact structure, a short treatment process, is easy to operate and maintain, can realize the harmless and resourceful treatment of petroleum sludge, and has good environmental protection and economic effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a simplified structural diagram of a petroleum sludge purification treatment system. DETAILED DESCRIPTION

[0014] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0015] See also Figure 1 The petroleum sludge purification treatment system includes an air heating furnace 1 for providing hot air and a drying furnace 2 for drying the sludge. The air outlet of the air heating furnace 1 is connected to the air inlet of the drying furnace 2. The air outlet of the drying furnace 2 is connected to an oil-water separator 3. The oil discharge port of the oil-water separator 3 is connected to an oil storage device. The air outlet of the oil-water separator 3 is connected to a condenser 6. The oil storage device includes a first oil tank 5 and a second oil tank 4 which are connected in sequence. The inlet of the first oil tank 5 is connected to the oil discharge port of the oil-water separator 3. A hot air device (not shown in the figure) for inputting hot air into the drying furnace is provided between the air heating furnace 1 and the drying furnace 2. Optionally, the air heating furnace 1 can adopt an existing air heating furnace such as CN209341584U; the drying furnace 2 can adopt an existing drying furnace such as CN209341715U or CN215447193U. Optionally, an indirect cooler 9 is provided on the pipeline between the drying furnace 2 and the oil-water separator 3 to preliminarily cool the gas about to enter the oil-water separator to improve the oil-water separation effect.

[0016] The condenser 6 is an indirect condenser. The condenser 6 has a gas inlet, a condensate outlet, a gas outlet, a coolant inlet and a coolant outlet. The gas inlet is connected to the gas outlet of the oil-water separator 3, and the condensate outlet is connected to a cold water pool 7. The cold water pool 7 is connected to the coolant inlet through a pump and a pipeline, and the coolant outlet is connected to the cold water pool 7. The gas outlet is connected to a waste heat furnace 8, and the waste heat furnace 8 can heat cold water into hot water for domestic water supply. Optionally, the smoke outlet of the air heating furnace 1 is connected to a bag dust collector. Optionally, two layers of movable furnace bridges distributed upper and lower are provided in the drying furnace, and the movable furnace bridges can be started regularly to prevent the sludge from agglomerating in the drying furnace and improve the drying efficiency.

[0017] During operation, normal temperature air can be input into the air heating furnace, and then the hot air of about 230-250℃ produced by the air heating furnace can be input into the drying furnace. At the same time, the petroleum sludge to be treated can be input into the drying furnace, and the gas in the drying furnace is discharged from the upper part of the drying furnace into the oil-water separator, and the dried sludge is discharged from the lower part of the drying furnace. During the drying process, the relevant pathogens in the sludge can be killed simultaneously. In the oil-water separator, the oil can be condensed and separated first, and then the remaining gas enters the condenser, which can further condense the water to form condensed water. The condensed water enters the cold water pool and can be used as a coolant to participate in circulating cooling. The remaining gas is usually combustible gas, which is input into the waste heat furnace for use.

[0018] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

Claims

1. Petroleum sludge purification system, characterized in that: The invention comprises an air heating furnace (1) for providing hot air and a drying furnace (2) for drying oil sludge, wherein the air outlet of the air heating furnace (1) is connected to the air inlet of the drying furnace (2), the air outlet of the drying furnace (2) is connected to an oil-water separator (3), the oil discharge port of the oil-water separator (3) is connected to an oil storage device, and the air outlet of the oil-water separator (3) is connected to a condenser (6).

2. The petroleum sludge purification system according to claim 1, characterized in that: The oil storage device comprises a first oil tank (5) and a second oil tank (4) which are connected in sequence, and the inlet of the first oil tank (5) is connected to the oil discharge port of the oil-water separator (3).

3. The petroleum sludge purification system according to claim 1, characterized in that: The condenser (6) is an indirect condenser.

4. The petroleum sludge purification system according to claim 3, characterized in that: The condenser (6) has a gas inlet, a condensate outlet, a gas outlet, a coolant inlet and a coolant outlet. The gas inlet is connected to the gas outlet of the oil-water separator (3). The condensate outlet is connected to a cold water pool (7). The cold water pool (7) is connected to the coolant inlet. The coolant outlet is connected to the cold water pool (7).

5. The petroleum sludge purification system according to claim 4, characterized in that: The gas outlet is connected to a waste heat furnace (8).

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