RU2698437C1 - Apparatus and method of preparing containers for loading transported products - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: claimed group of inventions relates to a washing unit of a recirculation type and a method for preparing containers for filling and is intended for preparation for loading of various mobile tanks, such as tank cars, container-cisterns, tank-vehicles, from different liquid products / cargoes; animal fats, vegetable oils and products of their processing; motor oils and lubricants, crude oil and oil products. Method involves feeding effluents under vacuum and feeding steam into accumulation tank 1 with a mixer. Homogenization of effluent is carried out in the accumulation tank. Further, the homogenized effluent is separated with feeding the coagulant into three fractions in three-phase separator 2: a light fraction – a purification product, water and a heavy fraction – wastes. Further, dispersed impurities of the light fraction are separated by means of at least one stage of pressure flotation (floaters 3, 4 and saturators 5, 6). Light fractions are discharged into light fraction collection reservoir 10. Part of the light fraction from the collection reservoir is supplied to the fuel supply zone to the process equipment ensuring the operation of the plant for their repeated use. Portion of the light fraction from the collection vessel is transported to the consumer. Purified water is fed into a reservoir for reuse. Heavy fraction is recycled.

EFFECT: high efficiency of the device owing to possibility of repeated use of oil refining residues and water to reduce power consumption at high speed of operation.

5 cl, 1 dwg

Description

The recirculation-type washing machine is designed to prepare for loading various mobile tanks, such as tank cars, tank containers, tank trucks, from under various liquid products / cargoes; animal fats, vegetable oils and their processed products; motor oils and lubricants, crude oil and petroleum products.

A mobile washing installation of recirculation type is an autonomous industrial solution through which a team of operators (consisting of 2..3 specialists) can wash from the inside / prepare for filling tanks without using external communications (electricity, steam, gas, water, and also discharge and acceptance of drains).

Known mobile washing installation for cleaning tanks, containing equipment installed on the vehicle, including a washing fluid supply system, connected by passing through the technological hatch of the cleaned tank by a pipe with a shut-off valve to the gripping device of the pumping system of washed sediments, which is connected to the collection tank, in the lower part which has nozzles with shut-off valves for filling, draining jelly-like waste and draining contaminated liquid, the taste of disposal of solid and jelly-like waste, the installation of separation and water purification for reuse for washing the tank (utility model patent No. 86506, IPC B08B 9/08, application: 2009118818 from 05.19.2009 - prototype).

The disadvantages of this technological complex are the high energy consumption during tank cleaning, the loss of high-quality processed products and low environmental parameters.

The technical result is an increase in the efficiency of use of a mobile and fully autonomous device due to the possibility of reusing residues of oil products and water to reduce energy consumption while ensuring high speed.

The claimed technical result is achieved as follows.

Installation for the preparation of containers for loading transported products contains installed on a vehicle:

- storage tank with a stirrer;

- 3-phase separator;

- at least one flotator with a saturator and a buffer tank,

- a hydraulic pump connected to a vehicle engine or to an engine power take-off;

- a fuel line with a main and additional diesel fuel tanks, equipped with an additional output for supplying fuel to the technological equipment that ensures the operation of the installation;

- steam supply line connected to the storage tank,

- a flexible receiving pipe with evacuation for receiving common drains,

- a pipe connecting the storage tank with a three-phase separator with the supply of coagulant to separate the effluent into three fractions: the light fraction - the cleaning product, water and the heavy fraction - waste,

- an oil collecting device for collecting and discharging a light fraction into a purification complex containing at least one saturator, a flotator and a buffer tank,

- the collection capacity of the light fraction,

- a tank of purified water for its reuse.

The installation contains a recirculation line for supplying light fractions to the fuel supply zone to the technological equipment that ensures the operation of the installation.

A method of preparing containers for loading transported products includes:

- the supply of effluents under vacuum in a storage tank with a stirrer;

- steam supply to the storage tank;

- homogenization of runoff in the storage tank;

- separation with the supply of a coagulant of a homogenized runoff into three fractions: the light fraction - the cleaning product, water and the heavy fraction - waste;

- the allocation of dispersed impurities of the light fraction using at least one stage of pressure flotation;

- removal of light fractions in the capacity of collecting light fractions;

- the supply of part of the volume of light fractions from the collection tank to the fuel supply zone to the process equipment, ensuring the operation of the installation for their reuse;

- transportation of part of the volume of the light fraction from the collection tank to the consumer;

- supply of purified water to the tank for reuse;

- disposal of heavy fractions.

The effluents to be cleaned are pumped to a storage tank using a pump. Runoff homogenization is carried out by low speed mixing.

A diagram of a mobile washing device for cleaning tanks is presented.

FIG. 1 - mobile washing complex, a schematic diagram.

The mobile recirculation washing installation for the preparation of containers for loading transported products contains the equipment installed on the vehicle:

a fuel line with a main and additional diesel fuel tanks, equipped with an additional outlet for supplying fuel to the technological equipment that ensures the operation of the complex;

a hydraulic pump connected to the vehicle engine or to the engine power take-off (pressure water supply device);

steam supply device.

Unit cleaning unit contains:

- a flexible receiving pipeline with evacuation for receiving common drains;

- cumulative capacity for receiving drain 1 with a stirrer (homogenization of the drain);

- three-phase separator 2, dividing the drain into three fractions:

 light fraction (purification product); assembled in collection and disposal devices 10;

 water (treated effluents) are collected in buffer tanks 7 and 8;

 heavy fraction (waste) is collected in the disposal zone 11.

- capacity 9 for reagents used for water purification;

- a complex of one-, two- or multi-stage cleaning; example of the composition of a two-stage cleaning complex:

- flotators 3 and 4;

- saturators 5 and 6;

- buffer tanks 7 and 8.

To supply light fractions (purification product) to the fuel supply zone to the technological equipment ensuring the operation of the complex, an additional recirculation line is connected in the installation.

The mobile recirculation washing unit is located in two vehicles on a truck chassis on a standard container semi-trailer or directly in a similar volume semi-trailer. The fuel line of the tractor, which uses the main and additional tanks with diesel fuel, has an additional outlet for supplying fuel to external consumers (technological equipment located in containers). The main engine of the tractor, power take-off and, accordingly, the hydraulic pump in the parking lots are controlled by an external control system (technological equipment in containers).

The containers have dedicated storage areas for a universal mobile washing installation, hoses and pipelines, including a purge system, as well as a grounding system that is activated for the entire preparation time and external folding stairs for staff.

The training zone should provide access for vehicles and the placement of 2 containers, withstand a load of at least 2 x 25 tons, the distance between containers and containers should be within 50 m, should allow free movement between containers and containers, as well as around employees' containers, involved in the preparation, the possibility of falling onto the upper platform of the tanks (availability of serviceable stairs) is provided. The equipment directly used in the preparation zone - the washing installation - is made in explosion-proof design.

The containers are made with maximum protection against the formation and accumulation of explosive concentrations of substances inside a closed volume (an excess flow of purified air inside the containers is provided).

The estimated volume of preparation of containers per day is not less than:

• 24 tank cars; or

• 36 tank containers; or

• 24-40 tank trucks (depending on the total number of sections and hatches).

Preliminary preparation (after the Complex arrives in the training area) includes refueling with diesel fuel tanks (truck tractor); refueling of built-in container tanks with technical water; preparation (purification) of water in the required volume,

Wastewater treatment takes place in several stages. The total drain from all tanks through a flexible receiving pipe with vacuum enters the treatment plant and, passing through the various components of the treatment system, is clarified, and oil products and water are separated. Under the action of centrifugal force, a runoff is formed with equal-weighted particles of oil products. In this case, heavy fractions sink to the bottom of the averaging tank and are separated. By means of feed pumps, the stock is fed into a three-phase separator. Simultaneously with this process, coagulant is supplied. As a result, due to the special internal design of the separator, high-quality separation of water and the remaining oil products is carried out. The treated wastewater is pumped to a 6-tank pure water with a low-pressure pump. Separated (separated from water) oil products can accumulate in the integrated oil storage chamber on top of the separator. The volume of the oil accumulator is about 120 liters. An oil level sensor is integrated on the oil storage chamber. At maximum level, the sensor reports that the camera is full. Petroleum products are diverted by gravity to the storage tank for their collection.

The sludge collects at the bottom of the separator, which looks like a cone. This cone-shaped sludge collecting chamber at the bottom of the separator has a volume of 400 l.

A slurry pump is integrated in the lower part of the cone-shaped chamber for collecting sludge, which, if necessary, can pump the collected sludge directly from this chamber further for further use, processing or disposal.

The separator is designed for use in the above-ground version, for the effective physical separation of wastewater into three phases, namely:

a light fraction (purification product) with a density ρ <0.86 g / cm, process water with a density ρ ~ 1 g / cm³ and a heavy fraction (waste) with a density ρ> 1 g / cm³.

Claims (15)

1. Installation for the preparation of containers for loading transported products, containing installed on the vehicle storage tank with a stirrer; three phase separator; at least one flotator with a saturator and a buffer tank, characterized in that it contains a hydraulic pump attached to the vehicle engine or to the engine power take-off, a fuel line with a main and additional diesel fuel tanks, equipped with an additional outlet for supplying fuel to technological equipment, ensuring the operation of the installation; steam supply line connected to the storage tank, a flexible receiving pipe with evacuation for receiving common wastewater, a pipe connecting the storage tank to a three-phase separator with a coagulant for separating the effluent into three fractions: light fraction - cleaning product, water and heavy fraction - waste, an oil collecting device for collecting and discharging a light fraction into a purification complex containing at least one saturator, a flotator and a buffer tank, a tank for collecting a light fraction, a purified water tank for ornogo use. 2. Installation according to claim 1, characterized in that it contains a recirculation line for supplying light fractions to the fuel supply zone to the technological equipment that ensures the operation of the installation. 3. A method of preparing containers for loading transported products, including: - the supply of wastewater under vacuum in the storage tank with a stirrer; - steam supply to the storage tank; - homogenization of runoff in the storage tank; - separation with the supply of a coagulant of a homogenized runoff into three fractions: light fraction - product of purification, water and heavy fraction - waste; - the allocation of dispersed impurities of the light fraction using at least one stage of pressure flotation; - the removal of light fractions in the capacity of collecting light fractions; - supply of part of the light fraction volume from the collection tank to the fuel supply zone to the technological equipment that ensures the operation of the unit for their reuse; - transportation of part of the volume of the light fraction from the collection capacity to the consumer; - supply of purified water to the tank for reuse; - disposal of heavy fractions. 4. The method according to p. 3, characterized in that the effluents to be cleaned are pumped to a storage tank using a pump. 5. The method according to p. 3, characterized in that the homogenization of the drain is carried out by low-speed mixing.

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