CN211420060U - High-temperature carbonization drying device for oil-containing waste in oil field - Google Patents

Abstract

The utility model discloses a high-temperature carbonization drying device for oil-containing wastes in oil fields, which comprises a distillation still, a stirring mechanism and a plate-type air filter, wherein the distillation still comprises a cylinder body, a heating device, a feed inlet, a steam exhaust outlet and a waste residue outlet, the steam exhaust outlet is positioned at the top of the cylinder body, and the opening is upward; the plate type air filter is a vertical filter, the inlet is positioned at the bottom of the vertical filter, the opening of the inlet faces downwards, and the outlet is positioned at the top of the vertical filter; the plate type air filter is vertically installed right above the steam discharge outlet. The utility model adopts the plate-type air filter to filter the steam discharged by the distillation still, and the plate-type air filter is not easy to be blocked by dust; the plate-type air filter is vertically arranged right above the steam outlet, and filtered dust can directly fall back to the distillation still without blocking an air passage of oil-water vapor. The steam enters the condenser after being filtered, so that the workload of cleaning dust by the condenser can be reduced, and the operation efficiency of the equipment is improved.

Description

High-temperature carbonization drying device for oil-containing waste in oil field

[ technical field ]

The utility model relates to an oily waste recycling equipment especially relates to an oil field oily waste's high temperature carbonization drying device.

[ background art ]

The oily waste of the oil field mainly comprises oily drill cuttings and oily sludge, and the oily drill cuttings and the oily sludge respectively come from links such as oil and gas drilling, development, transportation and the like. At present, along with the increasing of development force of unconventional energy sources such as global shale gas, dense gas and the like, the application of an oil-based drilling fluid technology is more and more common, a large amount of oil-containing drill cuttings can be generated in the drilling process, and on the other hand, oil is carried to the ground from the stratum and can also generate oil-containing sludge after being settled in various containers, tanks, pipelines and other facilities. If these waste materials are not properly disposed of, they can cause varying degrees of impact and damage to the work area and surrounding environment. The high-temperature carbonization drying system for the oily waste can dehydrate and deoil the oily waste, so that the high-temperature carbonization drying and oil-water recycling of solid substances in the oily waste are realized.

The invention with the application number of CN201510654006.5 discloses a distillation pyrolysis device and a material treatment method, wherein the distillation pyrolysis device comprises a distillation kettle; the material inlet is arranged at the upper part of the distillation kettle; the stirring shaft penetrates through the distillation kettle along the length direction of the distillation kettle; at least one scraper component which is arranged on the stirring shaft and is contacted with the inner wall of the distillation kettle; the electromagnetic induction heater is arranged outside the distillation still, and the distillation still is positioned in an alternating magnetic field generated by the electromagnetic induction heater; and the at least one slag discharge port is arranged at the lower part of the distillation kettle. And the gasified gas of the distillation kettle enters a fraction condenser for cooling and then is recovered, the gas is stored in a temporary storage tank for carrying out fine separation on a next-stage disc center machine, and the treated residue enters a residue cooling tank for temporary storage.

Oil-containing waste of an oil field contains a lot of solid substances, gas gasified by a distillation still contains a lot of dust, and the dust enters a condenser and can be hung on the pipe wall of the condenser, so that the heat exchange efficiency of the condenser is reduced, even the condenser is blocked, and a system cannot work normally; if a traditional net type air filter is additionally arranged at the steam outlet of the distillation still, the net type air filter is easily blocked by dust.

[ summary of the invention ]

The to-be-solved technical problem of the utility model is to provide a high temperature carbonization drying device of oily discarded object in oil field that the steam extraction gas circuit of profit steam is smooth and easy, rear portion condenser is difficult for being blockked up.

In order to solve the technical problem, the technical scheme adopted by the utility model is that the high-temperature carbonization drying device for oil-containing waste in oil fields comprises a distillation still, a stirring mechanism and a plate-type air filter, wherein the distillation still comprises a cylinder body, a heating device, a front end plate, a rear end plate, a feeding hole, a steam exhaust outlet and a waste residue outlet, the steam exhaust outlet of the distillation still is positioned at the top of the cylinder body, and the opening is upward; the plate type air filter is a vertical filter, the inlet is positioned at the bottom of the vertical filter, the opening of the inlet faces downwards, and the outlet is positioned at the top of the vertical filter; the plate type air filter is vertically installed right above the steam discharge outlet.

The high-temperature carbonization drying device comprises a steam outlet valve, wherein the steam outlet valve is a pneumatic gate valve and is arranged between the inlet of the plate-type air filter and the steam exhaust outlet of the distillation kettle.

In the high-temperature carbonization drying device, the plate-type air filter comprises a cylindrical shell and a plurality of ash baffles, the ash baffles are arranged in an inner cavity of the cylindrical shell and divided into a left row and a right row, and the two rows of the ash baffles are arranged in a staggered and penetrating manner along the axis direction of the shell; the rear end of the ash baffle connected with the shell is higher than the suspended front end, and the included angle between the ash baffle and the axis of the cylindrical shell is 45-66 degrees.

In the high-temperature carbonization drying device, the periphery of the cylinder body is wrapped with the insulating and heat-insulating layer, the heating device is an electromagnetic induction heater, and the annular coil of the electromagnetic induction heater is arranged in the insulating and heat-insulating layer at the lower part of the cylinder body; the two waste residue outlets are respectively arranged at the middle section and the rear section of the bottom of the cylinder body and penetrate through the insulating layer; are respectively connected with two ash discharge screw conveyors through two valves.

The utility model adopts the plate-type air filter to filter the oil-water vapor discharged from the distillation still, the air passage of the plate-type air filter is wide, is not easy to be blocked by dust, and is easy to be cleaned; the plate-type air filter is vertically installed right above the steam exhaust outlet, and dust filtered by the air filter can directly fall back to the distillation still through the steam exhaust outlet of the pneumatic gate valve and the cylinder, so that an air passage of oil-water vapor cannot be blocked. Oil water vapor is filtered by the plate-type air filter and then enters the condenser, so that the amount of dust entering the condenser can be reduced, the workload of cleaning the dust by the condenser is reduced, and the operation efficiency of the equipment is improved.

[ description of the drawings ]

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of a high-temperature carbonization drying device for oil field oily waste according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a plate air filter according to an embodiment of the present invention.

[ detailed description of the invention ]

The embodiment of the utility model provides a high temperature carbonization drying device of oily discarded object in oil field's structure and principle are shown as figure 1 and figure 2, including stills, rabbling mechanism, play steam valve and plate-type air cleaner.

The distillation still comprises a cylinder, a heating device, a front end plate, a rear end plate, a feed inlet, a steam exhaust outlet and two waste residue outlets.

The periphery of the cylinder body is wrapped with an insulating layer, the heating device is an electromagnetic induction heater, and an annular coil of the electromagnetic induction heater is arranged in the insulating layer at the lower part of the cylinder body.

The feeding port is connected with an oily sludge metering and conveying pump through a feeding pneumatic valve, the two waste residue outlets are respectively arranged at the middle section and the rear section of the bottom of the cylinder body, and the waste residue outlets are respectively connected with the two ash discharging screw conveyors through two valves after penetrating through the insulating layer.

The steam outlet of the distillation kettle is positioned at the top of the cylinder body, and the opening is upward. The plate type air filter is a vertical filter, the inlet is positioned at the bottom of the vertical filter, the opening of the inlet faces downwards, and the outlet is positioned at the top of the vertical filter; the plate-type air filter is vertically arranged right above the steam exhaust outlet through the steam outlet valve.

The steam outlet valve is a pneumatic gate valve and is arranged between the inlet of the plate-type air filter and the steam exhaust outlet of the distillation kettle.

As shown in fig. 2, the plate air filter includes a cylindrical housing 1 and a plurality of dust baffles 2, the dust baffles 2 are arranged in an inner cavity of the cylindrical housing and divided into two rows, and the two rows of dust baffles 2 are arranged in a staggered and penetrating manner along an axial direction of the housing. The rear end of the ash baffle 2 connected with the shell 1 is higher than the suspended front end, and the included angle alpha between the ash baffle and the axis of the cylindrical shell is 45-66 degrees.

The high temperature carbonization drying device of the oily waste in the oil field of the embodiment of the utility model works, firstly, the inside of the distillation still is vacuumized by a vacuum pump (not shown in the figure), when the vacuum degree inside the distillation still reaches a certain value, the feeding pneumatic valve is opened, the oily sludge metering and conveying pump inputs the oily waste into the distillation still after metering, when the set conveying capacity is reached, the metering feeding is completed, the feeding pneumatic valve is closed, the electromagnetic induction heating device is started, the oily sludge and the drilling waste inside the distillation still are heated and transferred by the outer wall, at the moment, the stirring mechanism (high temperature anti-coking device) inside the distillation still is started, the oily sludge and the drilling waste are uniformly stirred, the uniform heating effect is achieved, the scraper blade extended by the high temperature anti-coking mechanism is attached to the wall of the distillation still for 360 degrees of rotation to scrape the oily sludge and the drilling waste on the wall of the distillation still, the heat transfer efficiency can not be weakened when the wall of the distillation still is kept clean and free of scale. When the temperature of the oily sludge and the drilling waste in the distillation kettle reaches 60 ℃, the water in the oily sludge and the drilling waste starts boiling gasification, and when the temperature reaches 280 ℃, the oil in the oily sludge and the drilling waste starts boiling gasification. At this time, the pneumatic gate valve installed at the steam exhaust outlet is opened to exhaust the oil-water steam. Because oil-containing sludge and drilling waste can generate a lot of dust when being dried, oil-water vapor passes through the dust filter to filter out the dust generated when the oil-containing sludge and the drilling waste are dried. The relatively clean oil vapor and water vapor enter a shell-and-tube heat exchange device of the condenser through the opened pneumatic valve 1 and are condensed into oil-water mixed liquid.

The air filter of the embodiment of the utility model adopts the plate-type air filter, the air passage of the plate-type air filter is wide, is not easy to be blocked by dust, and is easy to clean; the plate-type air filter is vertically installed right above the steam exhaust outlet, the steam outlet valve adopts a pneumatic gate valve, dust filtered by the air filter can directly fall back to the distillation still through the steam exhaust outlet of the pneumatic gate valve and the barrel, and an air passage of oil-water steam cannot be blocked. The oil-water vapor discharged from the distillation still enters the condenser after being filtered by the plate-type air filter, so that the quantity of dust entering the condenser can be reduced, the workload of cleaning the dust by the condenser is reduced, and the operation efficiency of the equipment is improved.

Claims (4)

1. A high-temperature carbonization drying device for oil-containing wastes in oil fields comprises a distillation still and a stirring mechanism, wherein the distillation still comprises a cylinder body, a heating device, a front end plate, a rear end plate, a feeding hole, a steam exhaust outlet and a waste residue outlet; the plate type air filter is a vertical filter, the inlet is positioned at the bottom of the vertical filter, the opening of the inlet faces downwards, and the outlet is positioned at the top of the vertical filter; the plate type air filter is vertically installed right above the steam discharge outlet.

2. A high-temperature carbonization drying device as claimed in claim 1, wherein the high-temperature carbonization drying device comprises a steam outlet valve which is a pneumatic gate valve and is arranged between the inlet of the plate-type air filter and the steam outlet of the distillation still.

3. The high-temperature carbonization drying device as claimed in claim 1, wherein the plate air filter comprises a cylindrical housing and a plurality of ash baffles, the ash baffles are arranged in the inner cavity of the cylindrical housing and divided into two rows, and the two rows of ash baffles are arranged in a staggered and penetrating manner along the axial direction of the housing; the rear end of the ash baffle connected with the shell is higher than the suspended front end, and the included angle between the ash baffle and the axis of the cylindrical shell is 45-66 degrees.

4. The high-temperature carbonization drying device as claimed in claim 1, wherein the outer periphery of the cylinder is wrapped with an insulating and heat-insulating layer, the heating device is an electromagnetic induction heater, and a loop coil of the electromagnetic induction heater is arranged in the insulating and heat-insulating layer at the lower part of the cylinder; the two waste residue outlets are respectively arranged at the middle section and the rear section of the bottom of the cylinder body and penetrate through the insulating layer; are respectively connected with two ash discharge screw conveyors through two valves.

Images