SU1121236A1 - Apparatus for clarifying petroleum-bearing waste liquors - Google Patents

Abstract

1. A DEVICE FOR LIGHTING OIL WASTE WATER, containing a container with a water distributor, a water collector, a catchment and oil collecting trays installed 3 i 2, characterized in that, in order to increase the degree of water purification from oil products, the water distributor is equipped with one above the other and a heat source. between each other by swirling and distributing the flow of clarified water, the catchment basin is installed in the form of a vertical divider with a horizontal partition installed in the water distributor Above the bottom with a gap with the walls of the tank, and drainage and oil collecting trays are installed above the water distributor. (L to you from 05

Description

2. The device according to claim 1, about tl and -distribution of the flow of clarified, in particular, that the water distribution systems, the catchment basin, the catchment area and the non-separator, the twisting chambers and the collecting trays are installed coaxially.

1121236

one

The invention relates to the treatment of wastewater containing petroleum products and other water-immiscible sdcots, the density of which is less than the density of water, and can be used in the purification of oil-containing water tankers and other vessels, wastewater enterprises of oil refining, chemical, food and energy washing.

A device for refining of oil-containing wastewater, comprising a vessel with established in it a water distributor, vypolnenHbw as a series of coaxially raspoloiennyh pipes with visors, lodgement in the form of a number ustanovlennps superposed cylinders equipped kozyrkash annular chute discharge clarified water and neftesoyurnym located in the peripheral area of the tank l,

The drawback of the device is the combination of the zone of clarified water removal and the zone of oil product removal on the tank's mirror, which requires the presence of a complex metal-consuming oil-retaining dividing wall (water collector), which, however, does not exclude the possibility of partial ingress of oil products into the clarified exhaust water. This shortage does not allow to remove all emerging petroleum products from clarified water, which does not provide a high degree of purification.

The closest to the invention by technical essence and the achieved result is a device for clarifying oily wastewater containing a container with a water distributor installed in it, a sump, a collection tray, a collection tray with a siphon and a U-shaped partition located above the tray with an air inlet duct 2j.

3

In this device, low rates of drainage of clarified water, eliminating the loss of petroleum products by it, are ensured by the presence of compressed air under an E-partition wall, which requires a special air supply device (compressor): And additional energy consumption for its supply. In the cessation of air supply, the drainage tray is completely flooded and instead of free overflow of clarified water, it is withdrawn only from the siphon installation zones, which causes a sharp increase in the discharge rate, which entails partial ablation from these zones. popups of oil products discharged clarified water and, consequently, a decrease in the degree of purification.

The purpose of the invention is to increase the degree of purification of oily wastewater.

The goal is achieved by the fact that in the device for clarification of waste-containing waste water containing a container with a water distributor installed in it, a water collector, a catchment and oil collecting trays, the water distributor is equipped with one above the other and connected with each other cameras twisting and distributing the flow of the clarified water, the water collector Vpolnen in the form of a vertical pipe installed in the water distributor with a horizontal partition, dispersed above the bottom with a gap with the vessel walls, and Boric and oil-collecting trays are installed above the water distributor.

It is advisable to have a water distributor, the chambers are tightened; {and the distribution of the yute of the clarified water, the catchment basin of the catchment and oil-collection trays should be coaxial. 3 In FIG. 1 shows a device with a general view, a longitudinal section; in fig. 2 shows section A-A in FIG. 1. A device for clarifying oil-containing waste water contains a tank 1, in the center of which is a water distributor 2, consisting of coaxially arranged pipes 3 with canopies 4. The water distributor 3 is equipped with cylindrical chambers coaxial with it: a chamber 5 of closure and a flow distribution box 6 lighted water, separated by a partition 7. In the water distributor 2 there is a vertical pipe 8 for lifting clarified water, a container 9 for collecting clarified water, a catchment tray to and an oil collecting tray 11. At the bottom of the tank 1 A horizontal partition 12 is installed, the outer edges of which do not reach the walls of the tank 1, forming a clearance B along the perimeter, and an inner edge connected to the lower end of the pipe 8 A pipeline 14 discharging the clarified water is connected to the lower edge of the pipe 8, and a pipeline 14 is connected to the oil collecting tray 11 removal of separated petroleum products. A pipeline 15 for supplying the clarified water through the tangential nozzle 16 is connected to the swirling chamber 5 of the clarified water flow. The device works as follows. The stream of clarified water supplied to the device through conduit 5 through the annular gap B in the partition 7 enters the chamber 6, distributed, from there, through the annular channels formed coaxial about the arranged pipes 3 with the hoods 4, enters the container 1. At the outlet of the distributor 2 to the tank 1, the flow rate of water decreases sharply, which ensures uninterrupted ascent of petroleum particles as the flow moves to the clearance B of the sump. Through the gaps B and D and the pipe 8, the clarified water enters the collection tank 9, from where it is transferred to the catchment tray 10 and 43 devices are removed through the pipeline 13. Spilled oil from the free surface of the tank 1 is transferred to the oil collection tray 11, and then removed from devices by pipeline 14. 364 By passing through / through the tangential nozzle 16, the flow of water in chamber 5 moves in a spiral from the periphery of the chamber to its center (twists), and due to the law of conservation of angular momentum, the circumferential flow velocity is inversely proportional ionalna radius of rotation thereof, i.e., increases with decreasing radius. The centripetal flow acceleration and, therefore, the centrifugal forces in it are inversely proportional to the third degree of the radius of rotation. The flow from the chamber 5 through the annular slot B in the partition 7 into the chamber 6, the flow of water moves in a spiral from the center around the periphery (unwinds), reducing its peripheral speed, and this is directed into the annular channels of the water distributor 2 formed by coaxially arranged pipes 3 and ko: zyrkami 4. Thus, in chamber 5 and 6, a field of centrifugal forces is created that is significantly superior in magnitude; especially in the central zone of the chambers, the force of gravity, which causes an intensive process of separation of water and oil products, having a density difference, directly in the chambers. In the flow of oily water in the central zone of chambers 5 and 6 a layer containing watered oil products (part of the total mass of oil products emulsified in waste water) is separated, which from chamber 6 enters the central annular channels of the water distributor 2 and through them into the upper part of the tank 1. Thus, in chambers 5 and 6, pre-treatment (clarification) of oily water occurs, causing uneven distribution of concentrations of oil products in water along the height of tank 1 directly at the exit of the cana water distributor catch 2, i.e. the concentration is maximum in the upper part of the tank 1 and the minimum in the lower part of the tank near the partition 12. This provides a shorter path to ascend, and, consequently, less time of gravitational settling of the main mass of petroleum particles, as well as remote zone of clarified water from the zone of maximum concentration defended in the tank of petroleum products. 51 The use of the proposed device makes it possible to increase the degree of purification by equipping the water distribution chamber with swirling chambers and distributing the flow of clarified water and installing a catchment basin, catchment and oil collecting trays coaxially to the water distributor. Installing a pipe for lifting clarified water, a collection tank and an oil collector tray above the water distributor and coaxially ensures radial symmetry of the velocity field in the tank relative to the axis of the water distributor and eliminates the possibility of horizontal circulation vortices that reduce the degree of purification. In addition, the transfer of the oil collecting tray from the peripheral area of the tank to its central area ensures maximum removal of zones, diversion of clarified water and emerging oil products from each other, which eliminates the possibility of entrainment of particles of emerging oil products from the removed clarified water and, therefore, increases the degree of purification.

Claims (2)

1. DEVICE FOR LIGHTING OIL-CONTAINING WASTE WATER, containing a tank with a water distributor, water collector, catchment and oil-collecting trays installed in it, characterized in that, in order to increase the degree of purification of water from oil products, the water distributor is equipped with chambers installed one above the other and communicating with each other and distribution of the flow of clarified water, the water collector is made in the form of a vertical pipe installed in the water distributor with a horizontal partition located above the bottom m with the gap with the walls of the container, and the drainage and oil-gathering trays installed above the water distributor. Th to go C5 2. The device according to π.1, on the basis of the distribution of the clarified stream flowing in that the water distribution channels, water collector, catchment and oil separator, swirl chambers and collection trays are installed coaxially.