RU81559U1 - PRODUCTION SYSTEM OF EQUIPMENT FOR DISPOSAL OF WASTE OF THE DRILLING PROCESS OF OIL WELLS - Google Patents

Abstract

The proposed utility model relates to the field of the oil industry and is intended for processing, rendering harmless and utilizing oil-containing wastes generated during the drilling of oil wells, in particular oil-containing drill cuttings, usually stored near wells, in drilling barns, temporary storage sites for oil-containing waste: liquid, paste-like and solid. The objective of the proposed utility model is to increase the efficiency of disposal of oily waste generated during drilling of oil wells. The technical result that can be obtained by implementing the proposed utility model is to improve the quality of marketable products - briquettes (obtained from the solid phase extracted from oily waste) by increasing their strength characteristics and providing the possibility of recycling these briquettes as artificial stone, gravel and etc. for the production of building products and structures and / or sold for road construction. The problem is solved with the achievement of the above technical result by the proposed technical solution - a useful model "Production system of equipment for the utilization of the oil drilling process", including receiving-averaging tanks, pumps, pipelines with shut-off and control valves, heated intermediate tanks having connections with a unit for preparation and dosage of chemicals for the treatment of drilling oil sludge, the output from the intermediate tank is directed to a three-phase ntrifugu connected with the collection of oil and

water fractions and a container for collecting the solid phase isolated from oil sludge, a feed hopper, an inclined rotary kiln heated by flue gases, equipped with a discharge device, containers-containers of heat-treated materials sent to the briquetting system. What is new in the proposed utility model is that the containers for collecting the solid phase extracted from oil sludge have a technological connection with heated tanks with mixers equipped with loading hatches, pipes for supplying water to the recovery tank and a pipe connecting the recovery tank to the surface active substances (surfactants), the outlet from the recovery tank is sent to a three-phase centrifuge connected to collectors of oil and water fractions, containers for collecting the solid phase, have a connection to the feed hopper, n with a rotary kiln equipped with a furnace and connected to the oil fraction collectors, the flame from the furnace is sent directly to the internal space of the rotary kiln, containers-containers of heat-treated materials have connections to a mixer at the entrance to which there is a cement loading device from a metering hopper and a nozzle for water supply to the mixer, and the outlet from the mixer is directed to the briquetting system.

Description

The proposed utility model relates to the field of the oil industry and is intended for processing, rendering harmless and utilizing oil-containing wastes generated during the drilling of oil wells, in particular oil-containing drill cuttings, usually stored near wells, in drilling barns, temporary storage sites for oil-containing waste: liquid, paste-like and solid.

A technical solution is known (RF Patent No. 2182563 for application No. 2000106103/12 with prior, dated March 15, 2000; Published: May 20, 2002; IPC ⁷ С02F 11/00, С02F 1/40. "System for collecting, processing oil sludge and decontamination of soil ").

The well-known "System for the collection, processing of oil sludge and soil neutralization" contains a series-connected module for collecting and pumping sludge, a filter, a separator, and the output of the first emulsifier supply unit is connected to the input of the filter, and the output of the filter is connected to the input of the drive of large mechanical particles; the output of the separator by light fraction is connected to the inlet to the heater, the input of which is also connected to the output of the second demulsifier supply unit and the output of the water vapor supply unit; a two-phase centrifuge, one output of which is connected to the input of a three-phase centrifugal separator, one output of which is connected to the input of the tank for collecting purified oil; the heavy fraction separator output through the third sludge supply device is connected to the extractor input, to the other two inputs of which are connected a steam supply unit and a solvent supply unit, respectively; an enzyme processing device whose output is communicated with one of

the inputs of the biological destruction device, and the other input of the latter is connected to the output of the first aeration system, the input of which is connected by the first pump to the output of the biological destruction device, while the output of the biological destruction device is also connected to the input of the cleaned sand output device; the outlet of the separator for water-sludge suspension using a pump for supplying water-sludge suspension is connected to the input of the cultivator, the second input of which is connected to the output of the second aeration system via a feedback circuit from its output using the second pump; one of the separator inputs through the separator receiver is connected to the water vapor supply unit, the heavy fraction output from the heater through the first speaker system is connected to the input of a two-phase centrifuge; two exits of the extractor by water and suspension are connected to the respective inputs of the separator, and the third output of the extractor by sand through the second speaker system is connected to the input of the enzyme treatment device using the fourth sediment supply device; the water separator output through the first acoustic filter is connected to the input of the sludge collection and pumping unit using a water supply pump; the second output of the second aeration system through the fourth speaker system is connected to the third input of the cultivator, and its output through the second acoustic filter is connected to the second input of the module for collecting and pumping sludge; the second output of the three-phase centrifugal separator using the second sludge supply device and the third output of the three-phase centrifugal separator are connected to the respective inputs of the separator.

The disadvantage of this known technical solution is the complexity of the design and the difficulties associated with the operation of the "System for the collection, processing of oil sludge and decontamination of soils."

Of the known analogues, the closest in technical essence and the achieved result is a well-known technical solution (RF Patent ПМ №71730 by application No. 2007139480/22 with prior. From

10.24.2007. Zareg. and publ. 03/20/2008. Bull. Number 8. IPC ⁸ F23В 10/00) “Industrial technological complex for the processing and disposal of oily waste” - adopted as a PROTOTYPE.

The technical solution for the prototype includes: heated receiving-averaging tanks (1), strainers (not shown in the figure), pumps, pipelines with shut-off and control valves, heated and heat-insulated intermediate tanks (2), containers for collecting solid phase , prefabricated containers for oil products cleaned of foreign impurities, intermediate containers (2) have connections to a unit (3) for the preparation and dosage of chemicals for oil sludge treatment, and the outlet from intermediate tanks (2) through a pumping system mu was sent to a high-speed three-phase centrifuge (4) connected to collectors of oil (5) and water (6) fractions and containers (7) to collect the solid phase extracted from oil sludge, containers (7) have screw connections with mixer dryers (9 -1 and 9-2), the outlet of which is connected by a screw conveyor (not shown in the figure) to the feed hopper (10) of the thermal desorber (11), heated by flue gases and made in the form of an inclined rotary tube furnace (12) and placed in a motionless -installed housing (13) of a thermal desorber (11) equipped with unloading device (14), made in the form of a water-cooled pipe with a discharge screw conveyor (15) placed in it with a hollow water-cooled shaft, the output from the unloading device (14) is directed to containers-containers (16) of heat-treated materials sent to the briquetting system (17 ), the exit chamber (18) of the thermal desorber (11) is connected to the irrigated scrubber (19) for cleaning exhaust gases from dust, low-boiling condensing hydrocarbons, the scrubber (19) is equipped with a drop-, mist eliminators (20) installed in the upper part of the scrubber Bera, yield oil-slurry the dust from the bottom of scrubber zone (19) through a circulating pump (21) is directed to a system of filters (22-1 and 22-2),

connected to a collection tank (23) with condensed oil and through a water-cooled heat exchanger (25) with an oil-scrubber system, the collection tank also has a connection to reservoirs (capacity) (24) for storage and subsequent shipment to consumers of cleaned from foreign impurities oil products (oils), after filters for cleaning oil from suspended particles (22-1 and 22-2) a collector (26) of the solid phase is collected, trapped in a scrubber (19), the collector (26) has connections with mixer dryers (9-1 and 9-2), connected to these dryers through dosing hopper (27) container (28) with oil-contaminated earth, for the output of volatile hydrocarbons from the top of the scrubber (19) above the dust-drop eliminators (20), a fitting (29) is installed, which has connections to the afterburner of combustion (30) equipped with a burner 31) and blowers (32-1 and 32-2) connected directly to the afterburner (30) and the burner (31), the exit of hot flue gases from the afterburner is directed to the inlet (33) of the thermal desorber and to the mixer-driers ( 9-1 and 9-2), for the withdrawal of cooled flue gases from the thermal desorber and the fan (34) is installed.

Known for the prototype, "Industrial technological complex for the processing and disposal of oily waste" works and is operated as follows.

The initial oil sludge arriving for processing, neutralization and subsequent disposal is loaded into receiving heating tanks

(1) equipped with mixing devices. Then heated oil-containing wastes from these tanks are pumped through special coarse mesh filters using a pump system for further heating and chemical treatment into intermediate heating and heat-insulated containers (2) equipped with mixers. From the site (3) for the preparation and dosage of chemicals in the intermediate containers (2) serves and / or injects solutions of coagulants, demulsifiers and flocculants; heated and treated with the above chemical

reagents oily waste is directed (pumped) to a high-speed three-phase centrifuge (4), which separates the oil, water and solid phases (fractions). The oil fraction is collected in the reservoir (5), the aqueous fraction is collected in the reservoir (6), and the solid phase - the precipitate is collected in containers (7-1). From these containers (7-1), the solid phase - precipitation by screw connections (8) is loaded into mixer dryers (9-1 and 9-2), from where precipitation is fed by a screw conveyor into the feed hopper (10) of the thermal desorber (11), from the feed hopper (10), the sediment containing up to 15% of petroleum products is sent to an inclined rotary tube furnace (12), heated externally by flue gases and placed in a motionless mounted housing (13) of the thermal desorber (11). Heat-treated material - in the form of a powdered mass, is removed from the thermal desorber (11) through an unloading device (14) and by an unloading screw conveyor (15) placed in a water-cooled pipe, unloaded into collection containers (16) and then sent to the briquetting system (17). The steam-, dust-gas mixture formed during the heat treatment-thermal desorption process enters from the exit chamber (18) of the thermal desorber to an oil-wet scrubber (19), in which dust from the thermal desorber is collected and low-boiling hydrocarbons (oils) are condensed by the circulation pump ( 21) served on the filter system (22-1 and 22-2) - for cleaning condensed oil from the solid phase (dust). The dust-free oils are partially fed to a water-cooled heat exchanger (25) and then to a scrubber (19) for irrigation of a steam-, dust-gas mixture coming from a thermal desorber. A part of the condensed oil products (oils) from the collection tank (23) is pumped (or transferred by gravity) to the tank (tank) (24) for accumulation, storage and subsequent shipment to consumers as a commercial product and / or intermediate. Filters - the filter system (22-1 and 22-2) is unloaded, the precipitate is the heat-treated dust fraction extracted from the oil

oily waste is collected in collectors (26), from where it is sent for mixing with other solid oily waste, in the mixer-driers (9-1 and 9-2) fed from the container (28) and dosing hopper (27) oiled earth, all combined solid oily wastes in mixer dryers (9-1 and 9-2) are thoroughly mixed when heated by flue gases leaving the afterburner, and then loaded into a thermal desorber (11).

The waste gases formed during the heat treatment of oil sludge in a thermal desorber (11) —volatile hydrocarbons are removed from the upper part of the scrubber (11) through a fitting (29) and sent to the so-called “afterburner” of combustion (30), equipped with burners (31), to ensure normal mode of combustion of hydrocarbons, blowers (32-1 and 32-2) are connected to the afterburner (30) and burner (31), providing the required air (oxygen) supply to the combustion chamber and directly in the burner, and hot flue gases from the afterburn of the combustion chamber enter through the fitting (33) of the thermal desorber (11) and, at the same time, to the mixer-driers (9-1 and 9-2). Partially cooled flue gases are removed from the thermal desorber using a fan (34).

Thus, in accordance with the proposed technical solution, volatile hydrocarbons generated during the heat treatment of various solid oily waste products are disposed of directly in the general technological scheme. Due to this, the processes of heat treatment of oily waste occur in an autothermal mode: the amount of heat generated by the combustion of light hydrocarbons removed from the upper part of the scrubber (19) is quite sufficient for the thermal desorption process. A certain amount of (very small) fuel (diesel fuel, natural gas, etc.) is necessary only at the initial moment - i.e. at the time of launching ("ignition") of an industrial technological complex into operation, after

of which, the "System" works "on its own", while additionally refined oil products are produced that are suitable for sale as commercial products and / or intermediates.

The disadvantage of the technical solution for the prototype is the unsatisfactory quality of the briquettes obtained from the solid phase - after thermal desorption of most of the petroleum products.

The objective of the proposed utility model is to increase the efficiency of disposal of oily waste generated during drilling of oil wells.

The technical result that can be obtained by implementing the proposed utility model is to improve the quality of marketable products - briquettes (obtained from the solid phase extracted from oily waste) by increasing their strength characteristics and providing the possibility of recycling these briquettes as artificial stone, gravel and etc. for the production of building products and structures and / or sold for road construction.

The problem is solved with the achievement of the above technical result by the proposed technical solution - a useful model “Production system of equipment for utilization of the oil drilling process”, including (Fig. 2) receiving-averaging tanks (11), pumps, pipelines with shut-off and control valves, heated intermediate tanks (2) having connections with a node (3) for the preparation and dosage of chemicals for the treatment of drilling oil sludge, the output from the intermediate tank (2) is directed in a three-phase centrifuge (4-1) connected to a collector of oil (5) and water (6) fractions and a container (7-1) to collect the solid phase extracted from oil sludge, a feed hopper (8), an inclined rotary kiln (9) heated by flue gases, equipped with a discharge device (10), containers containers (11) of heat-treated materials sent to

briquetting system (12). New in the proposed utility model is that the containers (7-1) for collecting the solid phase extracted from oil sludge have a technological connection with heated tanks (13) with mixers equipped with loading hatches, nozzles for supplying water to the recovery tank and a pipe, connecting the recovery tank with a surfactant dispenser (14), the outlet from the recovery tank is sent to a three-phase centrifuge (4-2), connected to collectors of oil (5-2) and water fractions (6), containers for solid phase collection (7-2), have a connection with feed hopper (13), an inclined rotary kiln (9), equipped with a firebox (14), and connected to the oil fraction collectors (15-1) and (15-2), a flame from the firebox is directed directly to the internal space of the rotary kiln (9) ), containers-collectors (11) of heat-treated materials have connections with a mixer (15) at the inlet of which there is a loading device (16) of cement from the metering hopper (17) and a pipe for supplying water to the mixer (15), and the outlet from the mixer sent to the briquetting system (12).

IMPLEMENTATION OF THE SUGGESTED USEFUL MODEL

The proposed utility model described above — the Production System of Equipment for the Utilization of Waste from the Oil Drilling Process — operates and operates as follows.

Wastes from the process of drilling oil wells (oil-containing sludge) from the receiving-averaging tank (1) enter the heated intermediate tank (2), into which chemical reagents are supplied from the unit (3). After processing, the contents from the tank (3) are sent to a three-phase centrifuge (4-1). The oil fraction is collected in the collection (5-1), and the aqueous in the collection (6-1). The solid phase is discharged into a container (7-1), from which it is sent through a feed hopper (8) to a recovery tank (13),

pre-filled with water, then surfactants (surfactants) are supplied to this repulpator tank (13) from the dispenser (3). After repulpation, the resulting pulp is fed into a three-phase centrifuge (4-2). The oily fraction is collected in collectors (5-2), and the aqueous fraction in collectors (6-2). The solid phase is discharged into the container (7-2) and sent to the feed hopper (13) of the rotary kiln (9), into the furnace of which oil-containing fractions from the collectors (5-1) and (5-2) are fed. Heat-treated materials from a rotary kiln through an unloading device are unloaded into a collection container (11), from which they are loaded through a loading device (16) into a mixer (15). Cement is also supplied to the mixer (15) from the metering hopper (17) and water is poured through the nozzle. After mixing, the paste-like mass is fed into the briquetting system (12) from which the products obtained go to the finished goods warehouse and then are shipped to consumers.

Claims (1)

The production system of equipment for the disposal of waste from an oil drilling process, including receiving-averaging tanks, pumps, pipelines with shut-off and control valves, heated intermediate tanks having connections to a unit for the preparation and dosage of chemicals for the treatment of drilling oil sludge, exit from an intermediate tank sent to a three-phase centrifuge connected to a collector of oil and water fractions and a container for collecting the solid phase extracted from oil sludge, bunker, inclined rotary kiln heated by flue gases, equipped with a discharge device, containers-containers of heat-treated materials sent to the briquetting system, characterized in that the containers for collecting the solid phase extracted from oil sludge have a technological connection with heated tanks with mixers equipped loading hatches, nozzles for supplying water to the repulpator tank and a nozzle connecting the repulpator tank with a surfactant dosing device (exit from the repulp tank the torus is sent to a three-phase centrifuge connected to the collectors of oil and water fractions, the containers for collecting the solid phase are connected to a feed hopper, an inclined rotary kiln, equipped with a firebox and connected to the collectors of the oil fraction, and a flame torch from the furnace is sent directly to the interior of the rotary kiln , containers-collectors of heat-treated materials have connections with a mixer, at the entrance to which there is a cement loading device from a metering hopper and a nozzle for feeding in cm water sprinkler, and the outlet from the mixer is directed to the briquetting system.