Device and method for thermally drying oil sludge through waste heat of high temperature furnace

Abstract

The invention relates to an oil sludge thermal drying device and method utilizing waste heat of a high-temperature furnace, comprising: a feeding system, a drying box and a discharge port, and the drying box includes: a purging system, a conveying system, a smoke exhaust system and a drying The base of the box, the purging system includes: an air inlet, a flue gas chamber, a purging device and a control device; The sweeping needles are located below the flue gas chamber and communicated with the flue gas chamber, and the plurality of sweeping baffles are located inside the flue gas chamber and respectively above each row of the sweeping needles, so The control device is connected to the plurality of purging baffles; the smoke exhaust system includes: an oil-gas separation system, a smoke exhaust pipe, and a flue gas treatment device, and the oil-gas separation system includes: a condensation device, a liquid outlet channel, a liquid outlet valves and oil-water separators. The invention fully separates and recycles the discharged resources, and reuses them, so as to realize the recycling of resources.

Description

Technical field

[0001] The invention belongs to the technical field of solid waste treatment, and specifically relates to a sludge thermal drying device and method using waste heat of a high-temperature furnace. Background technique

[0002] Oil sludge generally refers to a large amount of oily solid waste produced in the production, storage and transportation process of oil fields and refineries, and the process of oily sewage treatment. There are many kinds of oily sludge, and the oil, water and residue are fully mixed and emulsified, and the water holding capacity is strong. Because of its small solid particles and close oil-water density, it is difficult to separate by conventional methods. If the oily sludge is not cleaned up in time, it will have a greater impact on the environment and the health of the surrounding people: ①The oily sludge contains many toxic and harmful volatiles such as sulfide and benzene series, some of which are carcinogenic. Going down will endanger...

Examples

Embodiment

[0058] Example: The sludge sample with 20% oil and 40% water content is continuously fed into the drying chamber at a rate of 20 t / h, and the high temperature flue gas at 250°C is 8960.0 Nm 3 The rate of / h enters the high temperature flue gas chamber from the air inlet, selects a gear setting through the control device, and ejects from the purge needle. The conveyor belt transports sludge materials forward at a running speed of 2.78 mm / s (the residence time of sludge in the drying tank is 2h). In this process, the high-temperature flue gas exchanges heat with the sludge material and then the oil and gas and water vapor generated during the drying process of the sludge are passed along with the waste flue gas through the exhaust pipe into the condensing device for cooling, and the formed oil and water are cooled. The liquid enters the oil-water separation device for separation and is separately recovered. The non-condensable flue gas enters the flue gas treatment device to be pu...

Technical field

[0001] The invention belongs to the technical field of solid waste treatment, and specifically relates to a sludge thermal drying device and method using waste heat of a high-temperature furnace. Background technique

[0002] Oil sludge generally refers to a large amount of oily solid waste produced in the production, storage and transportation process of oil fields and refineries, and the process of oily sewage treatment. There are many kinds of oily sludge, and the oil, water and residue are fully mixed and emulsified, and the water holding capacity is strong. Because of its small solid particles and close oil-water density, it is difficult to separate by conventional methods. If the oily sludge is not cleaned up in time, it will have a greater impact on the environment and the health of the surrounding people: ①The oily sludge contains many toxic and harmful volatiles such as sulfide and benzene series, some of which are carcinogenic. Going down will endanger...

Examples

Embodiment

[0058] Example: The sludge sample with 20% oil and 40% water content is continuously fed into the drying chamber at a rate of 20 t / h, and the high temperature flue gas at 250°C is 8960.0 Nm 3 The rate of / h enters the high temperature flue gas chamber from the air inlet, selects a gear setting through the control device, and ejects from the purge needle. The conveyor belt transports sludge materials forward at a running speed of 2.78 mm / s (the residence time of sludge in the drying tank is 2h). In this process, the high-temperature flue gas exchanges heat with the sludge material and then the oil and gas and water vapor generated during the drying process of the sludge are passed along with the waste flue gas through the exhaust pipe into the condensing device for cooling, and the formed oil and water are cooled. The liquid enters the oil-water separation device for separation and is separately recovered. The non-condensable flue gas enters the flue gas treatment device to be pu...

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