Arrangement for thoroughly purifying, recovering and regenerating industrial and lubricating oils and cutting fluid

Abstract

An arrangement for thoroughly purifying, recovering and regenerating industrial and lubricating oils and cutting fluid comprises a thermally insulated housing in which are disposed a tank for dirty oil, coarse inlet filters, purification units, a recovery unit, a unit for the addition of additives, a fine filter unit and a tank for clean oil, which are connected by pipes having a set of shutoff and control valves. The purification units include a circulatory purification unit, a heat-gravity purification unit and a heat-vacuum purification unit, each of which contains a pump for supplying oil to the unit, an oil heater with a temperature sensor, and a fine filter unit. The technical result consists in obtaining thoroughly purified oil and cutting fluid.

Description

[0001] Device for deep cleaning, regeneration and restoration of industrial, energy oils and lubricating and cooling liquids.

[0002] Field of technology to which the invention relates

[0003] The invention relates to the field of mechanical engineering, namely for deep cleaning, regeneration and restoration of industrial and energy oils, lubricating and cooling liquids (hereinafter referred to as LCL) at the places of their operation and storage. For example, at gas pumping units of compressor stations, oil facilities of industrial enterprises, at turbogenerators of thermal power plants.

[0004] State of the art

[0005] A prior art discloses an installation for cleaning and regenerating waste industrial oils, comprising an inlet valve, an inlet pre-filter, and an outlet check valve, a degasser tank with inlet and outlet pipes, wherein the first outlet pipe of the degasser tank is connected to the outlet check valve via an outlet oil pump, a distributor, an ultrafiltration device, and the second outlet pipe is connected to a vacuum pump via a vapor separator condenser, wherein the installation is additionally equipped with a circulation pump, an intermediate fine filter, a level regulator, a second degasser tank with inlet and outlet pipes, in which one of the outlet pipes is connected to the inlet pipes of the same degasser tank and the first degasser tank via a circulation pump and an intermediate fine filter, and the other outlet pipe is connected to the vacuum pump via a vapor separator condenser,wherein its other inlet pipe is connected to the inlet valve via a pre-cleaning filter and a level regulator, and the outlet pipe of the first degasser tank is connected to the inlet pipes of the same and the second degasser tank via an outlet oil pump, a distributor and an intermediate fine filter, wherein both degasser tanks are equipped with external heaters and acoustic vibration devices (RU 2186095 C1, published 27.07.2002), a unit for regenerating waste industrial oils is known, containing a vacuum degasser, with an oil heater (abstract).,

[0006] From document US 4396504, published 02.08.1983, a mobile waste oil purification unit is known, comprising a waste oil purification apparatus consisting of hydraulically connected main components. A vertical cylindrical heater operating on diesel fuel is mounted on one end of the chassis. An air blower supplies a large volume of air under pressure into a cylindrical firebox, where the fuel-air mixture ignites and is supplied tangentially into the base of the central chamber inside the heater, where the combustion products follow a helical trajectory inside the central heat exchange chamber. Waste oil is supplied counter-currently along a second helical trajectory through an annular chamber separated by a cylindrical metal heat-conducting wall from the chamber carrying the combustion products.The heated waste oil is fed from the heater to a vibrating table solids separator or shaker mounted at the opposite end of the trailer chassis from the heater, where the solids are separated from the heated waste oil. The extended oil / water separator tank occupies most of the trailer chassis and is located between the heater and the solids separator. The waste oil with the removed solids is discharged by gravity into the first inlet compartment of the oil / water separator. Vertical cross walls within the separator tank form weirs of decreasing height to ensure separation of water from the oil before the oil flows into the last compartment remote from the solids separator. Water accumulating in the separator tank compartments is fed through parallel feed pipes to a common manifold.

[0007] From document DE19639488 A1, published 09.04.1998, an oil purification unit is known, containing a container with waste oil, with a heater from which heated oil is fed to a separator. The unit contains a flow meter, a return pipeline with a pump.

[0008] The closest analogue is a mobile station for the regeneration and restoration of turbine oils, characterized by the fact that it is located on a mobile wheeled platform made on the basis of a truck, and contains a heat-insulated housing in which the following are located, sequentially connected by a pipeline: a tank for dirty operating oil, an oil heater, a device for gravity cleaning of oil equipped with a pump, a tank for clean operating oil, a tank for oil for adsorption, a block with adsorbents, a tank for oil after absorption and a tank for introducing additives (RU 2618525, published 04.05.2017).

[0009] Disclosure of the essence of the invention

[0010] The claimed invention is aimed at solving the technical problem of improving the quality of oil purification, expanding the scope of application, increasing economic efficiency by including additional purification units and combining circuits. The technical result to which the invention is aimed consists in obtaining deeply purified oil and coolant, due to additional purification units, such as a circulation purification unit and a thermal vacuum purification unit, as well as a combination of sequential and parallel purification and regeneration circuits.

[0011] The technical result is provided by a device for deep cleaning, regeneration and restoration of industrial, energy oils and lubricating and cooling liquids, containing a heat-insulated housing in which a dirty oil tank, coarse inlet filters, cleaning units, a regeneration unit, an additive input unit, a fine filter unit, a clean oil tank are located, and are interconnected by means of pipelines containing a set of shut-off and control valves, wherein the cleaning units are: a circulation cleaning unit, a thermogravitational cleaning unit, a thermal vacuum cleaning unit, each of which contains an oil feed pump to the unit, an oil heater with a temperature sensor, a fine filter unit, and

[0012] - the circulation cleaning unit contains a centrifugal separator and a receiver for receiving oil from the circulation unit, connected by means of a pipeline;

[0013] - the thermogravitational cleaning unit contains pumps connected by means of a pipeline for feeding, pumping out residual dirty oil and pumping out clean oil, a tank for the thermogravitational unit with oil input devices;

[0014] - the thermal vacuum cleaning unit contains a vacuum column with a sprayer, a vacuum pump, a vapor and gas trap, and a pump for pumping degassed oil into the purified oil line, all connected by a pipeline;

[0015] - the regeneration unit contains a receiver with an oil heater and a pump for feeding oil into it, adsorbers with an adsorbent and a pump for feeding heated oil into the adsorbers, a fine filter unit connected by a pipeline;

[0016] - the additive input unit contains a container and a mixing device located in it.

[0017] Additionally, each unit includes a control panel and a clean oil meter.

[0018] In specific implementation cases, the fine filter unit contains a sampling valve for measuring oil purity indicators.

[0019] The capacity of the thermogravitational unit contains zones for collecting dirty oil with mechanical impurities and water, from which the dirty oil is drained back into the dirty oil tank by means of a pump. Unlike the analogue, which has only one thermogravitational cleaning unit, the declared device for deep cleaning, regeneration and restoration of industrial, energy oils and coolants contains three oil cleaning units: 1 - circulating cleaning unit A, 2 - thermogravitational cleaning unit B, 3 - thermal vacuum cleaning unit V. Due to this, it becomes possible to carry out gravitational cleaning, vacuum drying, degassing and pumping of transformer oils. It is possible to sequentially clean the oil through all three units to increase the purity class or their parallel and simultaneous use to increase productivity.It is also possible to regenerate industrial and energy oils in adsorbers with subsequent restoration by introducing the necessary additives. This device is essentially a mini-complex for cleaning and regenerating industrial, energy oils and coolants, which uses the most effective methods and technologies. It allows to significantly increase the service life of industrial and energy oils, reduce transportation costs for the delivery of new oil and disposal of used oil, which is especially important for remote enterprises and fields.

[0020] Brief description of the drawings

[0021] The device for deep cleaning, regeneration and restoration of industrial, energy (turbine, transformer, compressor) oils and coolants is shown in Fig. 1, where:

[0022] 1, 4, 5, 8, 13, 16, 17, 20 - Filter shut-off valve

[0023] 2, 7 - Tap for disconnecting the filter from the purified oil line

[0024] 3, 6 - Fine filter

[0025] 9 - Sample tap

[0026] 10 - Purified oil supply valve

[0027] 11 - Dirty oil tank

[0028] 12 - Dirty oil intake valve

[0029] 14, 19 - Tap for disconnecting the filter from the dirty oil line

[0030] 15, 18 - Coarse filter

[0031] 21, 85, 86, 87 - Oil supply pump

[0032] 22 - Dead zone oil drain valve

[0033] 23, 81, 89, 90 - Flow meter

[0034] 24, 26, 28, 30 - Valve for feeding dirty oil to the oil heater

[0035] 25 - Oil heater with temperature sensor

[0036] 27, 29 - Oil heater with temperature sensor 31 - Receiver with heater and temperature sensor

[0037] 32 - Valve for feeding heated oil to the separator

[0038] 33 - Valve for feeding heated oil to the thermogravitational unit

[0039] 34 - Valve for feeding heated oil to the vacuum degasser

[0040] 35 - Dead zones of the thermogravitational installation

[0041] 36, 54 - Water drain valve

[0042] 37 - Valve for draining purified oil from the separator

[0043] 38 - Separator

[0044] 39 - Valve for feeding oil from the separator to the purified oil line

[0045] 40 - Valve for feeding oil from the separator to the tank

[0046] 41, 42 - Oil drain valve

[0047] 43 - capacity of thermogravitational installation

[0048] 44, 45 - Valve for feeding oil from the thermogravitational unit to the purified oil line

[0049] 46 - Vacuum column with atomizer

[0050] 47 - Valve for shutting off the vacuum degasser from the purified oil line

[0051] 48 - Vapor and gas trap

[0052] 49 - Valve directing oil to vacuum degasser

[0053] 50 - Vacuum pump

[0054] 51 - Pump for feeding heated oil to the adsorption unit

[0055] 52, 59, 62 - Adsorption unit

[0056] 53 - Pump for pumping degassed oil into the purified oil line

[0057] 55 - Valve directing purified oil into heated receiver

[0058] 56, 60, 64 - Adsorption unit shut-off valve

[0059] 57, 61 - Valve for shutting off the adsorption unit from the oil drain line

[0060] 58, 63 - Valve directing oil to the adsorption unit

[0061] 65 - Capacity of purified oil

[0062] 66 - Valve for feeding recovered oil into the purified oil tank

[0063] 67 - Valve for draining purified oil into a container

[0064] 68 - Additive injection unit

[0065] 69 - Valve for feeding purified oil to the additives injection unit

[0066] 70, 77, 79, 82 - Fine filter unit

[0067] 71 - Receiver for receiving oil from the circulation unit

[0068] 72 - Pump for supplying oil to the oil heater of the thermogravitational unit 73 - Valve for shutting off the oil supply to the oil heater of the thermogravitational unit

[0069] 74 - Devices for introducing oil into the tank of a thermogravitational unit

[0070] 75 - Pump shut-off valve

[0071] 76 - Oil residue pump

[0072] 78 - Oil direction valve to the pump

[0073] 80 - Heated oil supply valve to receiver

[0074] 83, 84 - Parallel mode valve

[0075] 88 - Dirty oil residue pump

[0076] Fig. 2 shows a fine filter unit, Fig. 3 shows a conventional designation of a fine filter unit in a diagram of a device for deep cleaning, regeneration and restoration of industrial, energy (turbine, transformer, compressor) oils and coolants.

[0077] Implementation of the invention

[0078] The device for deep cleaning, regeneration and restoration of industrial, power (turbine, transformer, compressor) oils and coolants contains a heat-insulated housing in which a dirty oil tank, coarse filters, a circulation cleaning unit A, a thermogravitational cleaning unit B, a thermal vacuum cleaning unit V, a regeneration unit G, an additive input unit 68, fine filter units, and a clean oil tank are connected by pipelines. The circulation cleaning units A, thermogravitational B, and thermal vacuum V contain an oil heater with a temperature sensor.

[0079] The circulation cleaning unit A contains a feed pump 21, a centrifugal separator 38, a fine cleaning unit 70, and a receiver for receiving oil from the circulation unit 71, all connected by means of a pipeline.

[0080] The thermogravitational cleaning unit B contains an oil feed pump 85, a thermogravitational unit tank 43 with oil input devices 74, a fine cleaning unit 77, a pump 88 for pumping out dirty oil residues, and a pump 76 for pumping out clean oil, all connected by means of a pipeline.

[0081] The thermal vacuum cleaning unit contains an oil feed pump 86, a vacuum column 46 with a sprayer, a vacuum pump 50, a vapor and gas trap 48, a pump for pumping degassed oil 53 into the purified oil line, a fine filter unit 79, all connected by a pipeline. The regeneration unit G contains a receiver with an oil heater 31 and an oil feed pump 87 into it, adsorbers with a sorbent (52, 59, 62) and an oil feed pump 51 into the adsorbers, and a fine filter unit 82, all connected by a pipeline.

[0082] The additive input unit 68 consists of a container and a mixing device.

[0083] Each unit also includes a control panel and a purified oil meter.

[0084] The device works as follows.

[0085] Depending on the type of oil, its contamination and cleanliness requirements, the oil is fed to the cleaning units (circulation A, thermogravitational B, thermal vacuum V) according to the selected scheme. If necessary, oil regeneration is carried out in adsorbers 52,59,62 with subsequent restoration in the additives input unit 68.

[0086] The oil to be cleaned is pumped into the dirty oil tank 11. Then, through the input coarse mesh filters 15 or 18 (they operate alternately with the possibility of flushing without stopping the working process), the dirty oil is fed into the cleaning units using pumps - circulation A, thermogravitational B, thermal vacuum C. Depending on the degree of contamination and cleanliness requirements, it is possible to use different oil cleaning schemes.

[0087] Scheme 1. Cleaning oil from mechanical impurities and water.

[0088] The dirty oil is pumped by the feed pump 21 through the valve 24 into the oil heater 25 of the circulation cleaning unit A with a temperature sensor, in which it is heated to the required temperature (determined separately for each type of oil) in order to reduce the viscosity. Then through the feed valve 32 it enters the separator 38, in which mechanical impurities and water are separated due to centrifugal forces at revolutions of about 6000 rpm. Then the oil passes through the fine mesh filter unit 70 (filtration fineness 5 microns). The oil purity indicators are measured through the sampling valve 9, which is part of the filter unit design. If the purified oil meets the purity requirements, then through the flow meter 23 and valve 39 it is drained into the clean oil tank 65.If additional cleaning is required, oil from circulation cleaning unit A is pumped through valve 40 into receiver 71, from where it is then fed by pump 72 through valve 73 into oil heater 27 of thermogravitational cleaning unit B. Oil heated to the required temperature (from 55 to 90 degrees depending on the brand) is fed through input devices 74 into the tank of thermogravitational unit 43, divided into two sections to increase productivity. Due to the creation of a directed laminar flow and a sharp decrease in the oil flow rate, mechanical impurities and water are deposited in dead zones 35. Purified oil, due to the pressure created by pump 72, through valve 45, fine filter unit 77 and counter 89 enters tank of clean oil 65.

[0089] Through sampling valve 9, the parameters of the purified oil are monitored and, if necessary, the operating modes of the thermogravitational purification unit (oil heating temperature, feed rate) are adjusted. Mechanical impurities and water, as they accumulate in dead zones 35, are drained through valve 54 without interrupting the purification process. After completion of work, dirty oil from dead zones 35 is drained back into dirty oil tank 11 by pump 88 through valves 41 and 42, and purified oil is pumped out through valves 44, 45, 75 and fine filter unit 77 by pump 76 into clean oil tank 65. Valve 47 is used to switch the flow of purified oil to thermal vacuum purification unit B for subsequent drying and degassing.

[0090] Using pump 85 through valve 26, it is possible to draw directly from dirty oil tank 11, ensuring independent operation of thermogravitational cleaning unit B from unit A.

[0091] Scheme 2. Purification of transformer oil from mechanical impurities, water and gases.

[0092] To clean transformer oil from mechanical impurities and water, the circulation A or thermogravitational B cleaning units described in diagram 1 are used. For drying and degassing, the thermal vacuum cleaning unit (degasser) B is used. Oil, pre-cleaned from water and mechanical impurities, is fed through valve 47 from the clean oil line through oil heater 29 and valve 34 into vacuum column 46. Due to the vacuum created by pump 50, water vapor and gases are removed into trap 48. Then, using pumping pump 53, the oil is fed through filter unit 79 and flow meter 90 into clean oil tank 65. The parameters of the purified oil are monitored through sampling valve 9 and, if necessary, the flow is sent for repeated cleaning.

[0093] Scheme 3. Oil regeneration.

[0094] To remove the products of aging and oxidation of oil, a percolation method is used - the oil being purified is passed through an adsorbent - a substance capable of retaining products contaminating the oil on the outer surface of the granules and on the inner surface of the capillaries penetrating the granules.

[0095] Oil pre-cleaned in circulation units A or thermogravitational cleaning units B from receiver 31, equipped with an oil heater, is fed by pump 51 to adsorbers 42, 49, 52, filled with adsorbent. To achieve the required parameters for purity, it is possible to connect adsorbers in series or in parallel, depending on the degree of contamination of the original oil and the adsorbents used (brand and size of granules).

[0096] Cleaned from aging products, the oil enters through the fine filter unit 82 and flow meter 81 into the clean oil tank 65. Samples for parameter control are taken through tap 9. Feed pump 87 allows oil to be pumped directly from tank 11 into receiver 31.

[0097] Scheme 4. Oil restoration - introduction of additives. Modern oils contain the necessary additives - anti-rust, demulsifying, antioxidant, etc. During operation, cleaning, regeneration, their quantity decreases. If it is necessary to restore the oil according to these parameters, then the block for introduction of additives 68 is used. With the help of shut-off valves 67,66,69, the oil enters the tank, into which the necessary additives are added in the required quantity and thoroughly mixed. Then the mixture enters with the general flow into the tank of clean oil 65.

[0098] Thus, the declared device for deep cleaning, regeneration and restoration of industrial, energy oils and coolants provides deep cleaning of oil, due to the use of three cleaning units: circulation, thermogravitational and thermal vacuum, as well as the possibility of variable use of a combination of units, depending on the type of oil, its contamination and cleanliness requirements.

Claims

Invention formula 1. A device for deep cleaning, regeneration and restoration of industrial, energy oils and lubricating and cooling liquids, containing a heat-insulated housing in which a dirty oil tank, coarse inlet filters, cleaning units, a regeneration unit, an additive input unit, a fine filter unit, a clean oil tank are located, and are interconnected by means of pipelines containing a set of shut-off and control valves, wherein the cleaning units are: a circulation cleaning unit, a thermogravitational cleaning unit, a thermal vacuum cleaning unit, each of which contains an oil feed pump to the unit, an oil heater with a temperature sensor, a fine filter unit, and - the circulation cleaning unit contains a centrifugal separator and a receiver for receiving oil from the circulation unit, connected by means of a pipeline; - the thermogravitational cleaning unit contains pumps for pumping out dirty oil residues and pumping out clean oil, connected by means of a pipeline, and a thermogravitational unit tank with oil injection devices; - the thermal vacuum cleaning unit contains a vacuum column with a sprayer, a vacuum pump, a vapor and gas trap, and a pump for pumping degassed oil into the purified oil line, all connected by a pipeline; - the regeneration unit contains a receiver with an oil heater and a pump for feeding oil into it, adsorbers with an adsorbent and a pump for feeding heated oil into the adsorbers, a fine filter unit connected by a pipeline; - the additive input unit contains a container and a mixing device located in it.

2. The device according to item 1, characterized in that each unit includes a control panel and a purified oil meter.

3. The device according to item 1, characterized in that the fine filter unit contains a sampling valve for measuring the oil purity indicators.

4. The device according to item 1, characterized in that the container of the thermogravitational unit contains zones for collecting dirty oil with mechanical impurities and water, from which the dirty oil is pumped out into a dirty oil container by means of a pump.

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