UA57795U - Method of extraction of bitumen from bitumen-containing materials - Google Patents

Abstract

A method of extraction of bitumen from bitumen-containing materials, at which a bitumen-containing material is loaded into a metal basket that is placed in a sealed tank for heating and melting bitumen-containing material that is heated by circulating hot air, which is heated by a heat generator. Upon termination of melting and accumulation of molten bitumen in the lower part of a sealed tank it is drained through a drain pipe in the receiving tank, and the basket with residues is removed for unloading. After loading into the sealed tank of the basket with bitumen-containing material is carried out preheating loaded bitumen-containing material by supply to the tank cavity of hot gases that are removed from liquid or gas furnace providing partial oxidation of bitumen-containing material at limited supply from outside into the sealed tank of oxygen-containing air. After heating bitumen-containing material to a temperature equal or close to its self-ignition temperature supply to the cavity of sealed tank of hot gases is stopped and access to it from outside of oxygen-containing air is closed and temperature required for melting bitumen in the cavity of tank is further maintained by circulation in the cavity of tank of hot air, which is heated by a heat generator.

Description

actually end up in unauthorized landfills. into a hermetic tank for heating and melting bi-

Bituminous waste is a serious source of polluted bitumen-containing material, it heats the load of soil, underground and surface water, when bitumen-containing material is driven by a circulating hot furnace, the air pool is polluted with air heated with the help of thermal gessoine. nerator, and after the end of smelting and accumulation

There is a well-known method of extracting bitumen from the beating of molten bitumen in the lower part of hermetic materials, during which the bitumen tank is drained through a drain containing material and loaded into a metal basket-tube into receiving containers, and the basket from the overflow, which placed in a hermetic tank for pulleys removed for unloading, in the event of heating and melting of the bituminous material, which according to a useful model after backfilling, heating the loaded bituminous material into a hermetic tank of the basket (with the material circulating hot air filled with bituminous material the preliminary heating is carried out with the help of a heat generator, which heats the loaded bitumen-containing material with heat from a furnace operating on a solid fuel by means of a supply to the cavity of the fuel tank, and after the end of melting and the accumulation of hot gases discharged from the liquid or gas - molten bitumen in the lower part of the fuel tank of the furnace, with the provision of a partial drain, it is drained through the drain valve into the reception area of the bitumen-containing material with a limited capacity, and the basket with the residues is removed to enter from the outside into the sealed oxygen-loading tank (see article by Velikoselskyi D.M., air, and after heating the bitumen-containing material

Hryshchenko A.D., PE "WELSAM!" (Sevastopol) Ra-alu to a temperature equal to or close to kov A.A. "Disposal of soft bituminous waste at its self-ignition temperature stop the sub-roofing" on the website of hot "Peer//lmavie.sot.tsa/sooregaiyop/2004/Lneziv/meyiko5" gases and block access to it from outside oxygen-eivkiu .piti"). capacious air, and necessary for melting

This method is the closest analogue to the proposed method of further lowering the temperature in the tank cavity. rhyme with the help of circulation in the cavity

Common features of the known method and the method of hot air heated with the help of the application are the following set of essential features of the heat generator. of features "The method of extracting bitumen from bituminous materials. The specified set of essential features of the method, materials, in the execution of which bituminous mas- is claimed, allows you to significantly reduce the time for the material is loaded into a metal basket, which is heated in and expansion of bituminous material to a temperature higher than the catchment of bituminous material, heat up the melting temperature of bitumen, as a result of which the loaded bituminous material circulates - the productivity of bitumen extraction increases with hot air, which is heated with the help of bituminous materials. Due to the fact that the heat generator is turned on, and after the end of the melting of the bitumen-containing pits loaded into the hermetic tank, and the accumulation of molten bitumen in the bottom of the temporary material due to its partial oxidation of the hermetic tank, its draining takes a short period of time, but at the same time, cut the drain tap into the receiving containers, and the basket reaches a high temperature level, which is removed with the residues for unloading." rhymes further in a hermetic tank without access

The disadvantage of the known method is a considerable time for the tank of oxygen-rich air (that is, without further heating of the waste bitumen-containing material loaded into the hermetic tank), this allows the bitumen roof to be heated, since the heating of the bitumen roof is carried out effectively using the declared method for pouring and melting bitumen only for extraction of bitumen from bitumen-containing materials with the help of heat coming from a blower, with a percentage of bitumen of 20 95 and more without damage to an externally installed hermetic tank and promotion of the quality of extracted bitumen. It is connected to its cavity by two connecting pipes. It is desirable when the preheating of the loading pipelines, through which the recirculation of the bitumen-containing material into the tank is carried out, is carried out by heated air. A known method is economically viable by means of the circulation of hot gases, which can be used for the extraction of bitumen from liquid- or gas-fueled furnaces, and single-bitumen-containing materials with a percentage of their rapid heating by heat-exchange walls of bitumen, preferably not less than 40 95. heat generator placed in the cavity of the

The task of the proposed useful model is a metic tank. elimination of the shortcomings of the known method, namely the creation of a short-term process of oxidation of bitumen-containing materials, which makes it possible to significantly reduce the time it takes for the material to reach the required heating tempera- - rounds of loaded bituminous material. It is desirable that the bituminous material is heated above the melting temperature of bitumen, which increases the productivity of bitumen extraction from bituminous materials in a sealed tank to a temperature not lower than the self-ignition temperature of bituminous materials. material and maintain this temperature inside

The task is solved with the help of a hermetic tank in the absence of access from the outside in the method of extracting bitumen from bituminous materials - the cavity of a hermetic tank of oxygen-rich air, during which the bitumen-containing material until the end of bitumen melting, and the discharge melt - is loaded into a metal basket, which is placed cast bitumen from the tank to the receiving containers

after stopping the heating and cooling, the chambers 9 and 10 of the furnace 7 and the pipe 6 are hermetically connected to the tank with molten bitumen to a temperature below the self-ignition temperature of the bitumen. The installation also contains liquid fuel or

Observance of the specified temperature regimes gas furnace 14 for rapid preheating during the implementation of the method allows to reduce the time of bitumen-containing material loaded into the tank, to melt bitumen, and also to prevent its self-heating, which is placed inside the cavity 2 of the tank, and ignition during pouring of the molten bitumen bitumen in the walls 15, 16 of which are adjacent to the furnace 7 and to the internal receiving container. on the left side of the wall 17 of tank 1, Open exit 18

The cooling of the hermetic tank from the melting furnace 14 is connected to the cavity 2 of the tank, in which bitumen is carried out naturally or placed, at least one removable metal basket 3 with the help of forced air blowing, and in the side wall 19 of the tank 1, opposite the outer walls of the hermetic tank . for placing the furnace 14, a discharge channel is made

When using bituminous container 20 as a raw material, which is equipped with a shutter gate of soft roofing waste material with mat 21. Inside the cavity 2 of the tank on the side of the tank, pre-heating of the wall 19 loaded into the tank near the passage zone of the heat exchange bituminous material is carried out to temperature pipe 6 is equipped with an air mixing tower of approximately 250-350 "С and maintains this temperature by fan 22, which is designed as a suction until the end of bitumen melting, and this fan contains a discharge discharge of molten bitumen from the tank into the receiving pipe 23, which connected to the discharge nozzle is carried out after cooling the tank with a distribution pipe 24, the outlet 25 of which is located in molten bitumen to the temperature of approximately the lower part of the cavity of the tank 2. Discharge nozzle 180-200 76. discharge nozzle 23 is also connected to the discharge

This provides the most optimal and safe channel 20, which contains the outside of the tank 1 shut-off shi- technological temperature regimes for the implementation of the bern valve 21. In the lower part of the cavity 2 of the method when used for extracting bitumen, the tank is below the level of installation of removable metal waste of soft roofing materials. basket C (of the lower basket, if there are several baskets

Further, the claimed method will be installed in detail one on top of the other), but above the output 25 is described on the example of the operation of the installation, the discharge duct 24 is shown in the figures of the drawings, where: the tray 26 for receiving molten bitumen, fig. 1 - transverse vertical section of us- at the same time, the pallet 26 is located with the gap 27 of the tap for extracting bitumen from the bitumen-containing to the bottom 28 of the tank for air circulation and is connected from materials; with the drain pipe 29, which is brought out in fig. 2 - a top view of the installation shown on the cut bottom 28 and containing a drain valve 30. fig. 1, with the top removable cover removed. A through window 31 is made in the wall 17 of tank 1, which

The installation for extracting bitumen from bitumen is intended for the introduction of 14 materials into the cavity of the furnace, contains a tank 1 for heating a liquid fuel or gas burner 32, connecting bitumen-containing materials, which serves as a common nano with the external fuel supply pipe body of the installation. Tank 1 contains an internal fuel pipe 33 containing a valve 34 for regulation and a cavity 2 in which at least one fuel supply shut-off is placed. Outside, at the entrance of the window, a removable metal basket 3, intended for loading 31, a movable shutter 35 is installed, which serves as loading and unloading of bitumen-containing materials, for complete or partial covering of the window, a heat-insulated removable cover 4, which serves to 31. close access to the internal cavity from above The surfaces of the walls of the metal pipe 6 and the metal pipe 2 of the tank. The removable metal cover 4 forms from the furnace 7 serves as the heat exchange walls of the heat generator - the upper part of the tank 1 hydraulic shutter 5, torus. which runs along the entire perimeter of the tank. Extraction of bitumen using the declared

Inside the cavity 2, a heat method using the above-described installation, a generator containing at least one meta- is carried out as follows. the left heat exchange pipe 6, which is stretched through When the upper removable cover 4 is removed, baskets 3 with bitumen-containing metal basket 3 are loaded into the cavity 2 of the tank beyond the placement of the removable pipe 2, while the inner cavity is filled with material, for example, waste of soft bitumen heat exchange pipe pipes 6 are hermetically separated from the roofs, which are previously placed in these baskets. lena from the cavity of the 2nd tank. After that, tank 1 is closed from above with a removable cover

In fig. 1 shows a heat generator, which with a lid 4, which hermetically blocks the access from above, a metal furnace 7 placed in the cavity 2, which is connected to the cavity 2 thanks to the hydraulic, in particular, works on solid fuel, at the same time the metal is water, gate 5, and performs preheating the heat exchange pipe 6 is a discharge smoke pipe of the bitumen-containing material heated by the furnace 7 and one end is hermetically connected to the metallization of any solid fuel in the furnace 7, which exits the left body 8 of the furnace 7 and is loaded into the furnace chamber at the other end 9 of the furnace through the entrance to the outside outside the tank 1. Furnace 7, which works on solid fuel 11., contains the upper combustion chamber 9 and During the burning of fuel in the furnace 7, it heats the lower ash (ash) chamber 10. Entrances 11 and 12 its metal body 8 and metal heat exchanger, in accordance with the furnace and ash (ash) chambers, mine pipe 6, which is the exhaust smoke pipe of furnace 7, are led to the outer side of wall 13, and furnace 7. The heat leaving the walls is of the left heat exchange pipe 6 and the metal casing 8 of the furnace

7, heats the air in the cavity 2. The intensive level of temperature in the tank cavity is supported by the removal of heat from the metal body 8 and metal by means of circulation in the tank cavity of the hot metal heat exchange pipe 6 and the uniform air, which is heated only by heating the air inside the cavity 2 contributes to the heat generator formed by the heat exchange mechanism, the working air-stirring fan 22, the melt pipe 6 and the working metal furnace 7, which provides circulation inside the cavity on solid fuel, and in the absence of access from the outside in 2 tanks of hot air, which heats the loaded cavity of 2 tanks of oxygen air until bituminous material is added to the tank. process of bitumen smelting.

After loading into the hermetic tank 2, the heating of the tank 1 is stopped. preliminary rapid heating of the loaded After stopping the heating and cooling of the tank of bituminous material by means of supply 1 with molten bitumen to a lower temperature, to the cavity 2 of the tank of hot gases, which lead to the self-ignition temperature of bitumen, melt through outlet 18 liquid or bitumen is poured from the pallet 26 into the receiving furnace 14, with the provision of partial oxidation of the container (not shown conventionally in the drawings) due to the bitumen-containing material, with a limited supply of air. Inflow of oxygen-rich air from the outside Cooling of tank 1 can be provided in tank 1 by opening the dampers in a natural way, or with the help of forced air 35 and 20 and the operation of the suction fan 22, blowing the outer walls of tank 1 with air, which at the same time pumps the captured air to the outside When used as a raw material bitumen-containing material through the open channel 20 and into the lower part of the porous material of soft roofing material waste 2 under the tray 26 through the air duct 24. The pre-heating of the material loaded into the tank thanks to the operation of the fan 22 is carried out by the circulation 1 bitumen-containing material is carried out to temperature of the hot gases that are removed from the furnace 14 and the furnace is approximately 250-350 "С and maintain this temperature from the outer surfaces of the metal heat exchanger until the end of bitumen melting, and the draining of the pipe 6 and the metal body 8 of the furnace 7. Due to the molten bitumen from the tank in hot gas circulation receptacles in cavity 2 and below - carried out after cooling the tank with molten ice 26 is carried out by heating the bitumen loaded with it to a temperature of approximately 180-200 in tank 1 of bituminous material and heating b. of molten bitumen in the pallet, which flows into it from When performing the method, the temperature in the tank 1 basket 3. is controlled with the help of installed

After heating the bituminous material to the bottom of the thermocouple tank. at a temperature equal to or slightly higher than the temperature After the end of bitumen pouring from pallet 2, self-ignition of bitumen, stop the loading valve 30, close, remove the removable cover to the cavity of the sealed tank 1 of the hot shells 4 from the body 1 and remove them from the cavity 2 of gas from the furnace 14 by stopping the fuel supply to the basket C with the residues for unloading, and to the burner 32 and blocking the external access to the cavity 2, new baskets C are installed from the bi-tank 1 of oxygen-rich air by covering it with a quantum-containing material. After that, the working cycle of the channel 20 is repeated by the closing gate valve 21. closing window 31 with shutter 35. In the future, this 2 8 B: 4 z v 7 x / u i she Y ha y on - y v

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Ministry of Education and Science of Ukraine

State Department of Intellectual Property, str. Urytskogo, 45, Kyiv, MSP, 03680, Ukraine

SE "Ukrainian Institute of Industrial Property", str. Glazunova, 1, Kyiv - 42, 01601