Oil-containing sludge smoldering treatment device

Abstract

The invention discloses an oil-containing sludge smoldering treatment device which comprises a fan, an outlet end of the fan is connected to a heater through an outlet pipeline of the fan, an outlet end of the heater is connected to a smoldering furnace for containing oil-containing sludge, the top of the smoldering furnace is connected to a cooler through a steam outer conveying pipeline, an output end of the cooler is connected with a gas-liquid cyclone separator, a liquid outlet end of the gas-liquid cyclone separator is connected with a clean water outer discharging pipe, a gas outlet endof the gas-liquid cyclone separator is connected to a tail gas treatment device, an outlet end of the tail gas treatment device is connected with an emptying pipe, the smoldering furnace comprises a smoldering furnace body, a smoldering gas uniform distributing device is arranged at the inner bottom of the smoldering furnace body, an inlet end of the smoldering gas uniform distributing device is connected with a hot gas inlet pipe, space for containing the oil-containing sludge is reserved on the upper side of the smoldering gas uniform distributing device, a steam recovery cover is connectedat the top of the smoldering furnace body, and the steam outer conveying pipeline is connected onto the steam recovery cover. According to the device, the oil-containing sludge can be timely and efficiently treated in an energy-saving and environment-friendly manner.

Description

technical field [0001] The invention belongs to the field of oily sludge treatment, and in particular relates to a smoldering treatment device for oily sludge. Background technique [0002] According to statistics, the total amount of oily sludge produced in my country every year reaches more than 5 million tons, and with the deep exploitation of most oil fields, the output of oily sludge will continue to increase. If it is directly discharged, it will occupy a large amount of land, and the toxic substances it contains will pollute the water, soil and air, and deteriorate the ecological environment; when it is directly used for reinjection and circulation in the sewage treatment system, it will cause the quality of the injected water to decline and the operation of the sewage treatment system Conditions deteriorate, causing unpredictable losses in production. Oily sludge has been listed as oily waste in the "National Hazardous Waste Catalog". The "National Cleaner Productio...

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Problems solved by technology

Among them, the incineration method produces harmful gases such as sulfur and nitrogen, causing secondary pollution; the biological treatment method needs to mix the oily sludge with loosening agent, fertilizer and inoculation liquid, often vibrate and ventilate naturally, and it takes 41 days to remove 97% The biodegradation of petroleum hydrocarbons, the same oil resources have not been recycled; the hot washing method is suitable for oily sludge with less clay content and higher oil content, but the drainage and residue need to be further treated; the problem with the solvent extraction method is that the process is long , the process is complicated and the treatment cost is high, and it is only suitable for oily sludge containing a large amount of organic matter that is difficult to degrade; the chemical demulsification method needs to add a demulsifier and heating for the oily sludge with severe emulsification; the solid-liquid separation method is for oily sludge with high oil content and pollution Severe oily sludge, low oil recovery rate; solidified landfill method has simple process, low investment, and large processing capacity, but it is difficult to coat petroleum, and there is a risk of secondary pollution; superheated steam method is fully contacted through the nozzle Oily sludge, oil-water and solid separation, high separation efficiency, but small scale, high cost, high equipment failure rate; pyrolysis method is to decompose macromolecular organic matter into small molecular hydrocarbons and coke under the condition of no oxygen and high temperature, which has great influence on the process , equipment and safety requirements are high, the quality of oil and gas is poor, the odor is strong, and the residue is still hazardous waste

It can be seen that these methods have not been widely used in China due to reasons such as investment, treatment effect and secondary pollution.

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