Hydraulic cyclone plant

FIELD: separation of heterogeneous dispersed systems; devices for centrifugal separation of liquids from mechanical admixtures in hydraulic cyclone clearances; metallurgy and metalworking industry.

SUBSTANCE: proposed hydraulic cyclone plant includes reservoirs for initial waste liquid, sludge product and clean liquid, hydraulic cyclone with inlet, drain and sludge branch pipes, pump for delivery of initial liquid to hydraulic cyclone, injector and multi-hydrocyclone with inlet, drain and sludge branch pipes mounted between hydraulic cyclone and clean liquid reservoir provided inlet and outlet branch pipes; reservoir for sludge product provided with compressed air and flushing liquid branch pipes is located under sludge branch pipes of hydraulic cyclone and multihydrocyclone; injector fitted in initial liquid supply pipe line is provided with branch pipe for introduction of carbon dioxide from bottle. Proposed plant ensures through cleaning of waste liquid from solid particles of admixtures having diameter of 10 mcm up to 76-90%. Process of carbonization of liquid in shifting the admixtures from water-soluble state to solid phase reduces their concentration by 125 times. Repeated return of cleaned liquid to production saves chemical reagents by two times.

EFFECT: enhanced efficiency.

1 dwg

 

The invention relates to techniques for the separation of heterogeneous disperse systems, namely, devices for centrifugal separation of liquids from solids in hydrocyclone cleaners, and can be used in the metallurgical and Metalworking industries.

The closest technical solution is hydrocyclone unit, including tanks for the initial suspension and slurry product, the hydrocyclone with the input, the drain and sand pipes, pumps for supplying the initial suspension in the hydrocyclone and the clean fluid to the consumer, the tank for discharge of clean fluid to the consumer with overflow pipe, injector and one check valve installed on the discharge pipe of the cyclone, the other on perelivom the pipe /1/.

Known device does not provide a high quality cleaning with the separation of liquids from fine sludge and dissolved impurities, as it erases the original waste liquid only from large and middle fractions.

The task of the invention is to improve the quality purification of raw waste liquids from solids.

This object is achieved in that in the hydrocyclone installation, consisting of two stages, including the capacity for original waste liquid slurry of the product and clean the second fluid, the hydrocyclone with the input, the drain and slurry nozzles, a pump for supplying the original liquid in the cyclone and the injector, it is new that the plant is equipped with the second stage of the process in the form of multipication with the input, the drain and slurry pipes installed between the cyclone and the capacity of clean fluid from the inlet and outlet nozzles, and the capacity for slurry product with nozzles for compressed air and drilling fluid is located below the slurry outlet of the hydrocyclone and multipication and injector installed on the supply line of the source liquid, made with a pipe for input of carbon dioxide from the container.

The second purification stage in the form of multipication allows you to clear the original waste liquid from the fine impurities due to the use of hydrocyclones, which comprise multipication, with the inner diameter of the cylindrical part of each hydrocyclone equal to 25-50 mm

For proper treatment of the source fluid from impurities have to transfer them from the dissolved phase into a solid through a process of carbonization. The carbonization process takes place by entering into the liquid carbon dioxide from a cylinder through a nozzle of the injector, and in the liquid occur following chemical reaction:

CO2+H2About→ N2CO 3

Me3-+H2CO3IU2(CO3)3

Me2-+H2CO3Mesa3,

Me++-HE+Meso3Me(OH)2+IU2CO3

Me-+-HE+IU2(CO3)3IU(OH)3+IU2CO3

where Me+That IU2+Me3+ions of one -, two - and trivalent metals water-soluble impurities of the liquid.

Insoluble carbonates and hydrates, formed as a result of carbonization of the liquid are shown by solid phase impurities suspension.

Centrifugal pump installation performs the function of the mass transfer apparatus and a chemical reactor, in the cavity of the cochlea which is an intensive mixing and chemical interaction of carbon dioxide and liquid during the rotation of the wheel pump, rotating with a frequency of 1500÷ 3000 rpm/min

The drawing shows a hydrocyclone unit, General view.

The installation includes installed in the technological sequence container 1 for the original waste liquid from the nozzles 2 and 3, the pipe 7 with the injector 4 and the pipe 5, intended for input of carbon dioxide from a cylinder 6, is installed on the gas line 8, valve 9, the centrifugal pump 10 of the fluid in hydroc the clone 11 with an inlet 12, the drain 13 and the slurry nozzles 14, multipication 15 input 16 and output 17 and the slurry 18 in pipe, tank 19 to the slurry product from the nozzles 20 for compressed air, 21 - washing liquid and 22 for sludge, line 23, the container 24 for clean liquids with inlet 25 and outlet 26 of the pipe, the pipe clean fluid 27 to the valve 28.

The device operates as follows.

The centrifugal pump 10 take the original liquid waste from the tank 1 through the outlet 3 and serves to line 7 of the liquid on the solid-phase purification from impurities by centrifugal separation in a two-stage hydrocyclone installation. In line 7 has a built-injector 4 through which the flow of the original waste liquid in the pipe 7 through the pipe 5 is injected carbon dioxide from a cylinder 6 for carrying out the carbonization process fluid. The carbonization process begins in the injector 4, continues in the pipe 7 and into the cavity of the cochlea of the pump 10 into the vortex created by the pump wheel 10 rotating with a frequency of n=1500÷ 3000 rpm/min

In the process of carbonization of the original waste liquid create additional amounts of solid impurities.

In the first stage of cleaning the cyclone 11 is cleaned liquid from large and middle fractions of solid particles premise the diameter 40÷ 2000 μm by means of centrifugal separation. Of the discharge pipe 13 single hydrocyclone 11 liquid, purified from large - and medium-fine fractions, served on clearance from fine fractions of impurities in the inlet 16 of the second stage - multipication 15. From the slurry nozzle 14 hydrocyclone 11 selected solid particles of impurities in the form of sludge out into the tank 19 to the slurry of the product.

In the second stage of purification - multigicotori 15 - erases the liquid from the fine fractions of particulate impurities with a diameter of 10÷ 40 μm. From the drain pipe 17 multigeneration 15 purified liquid is supplied into the container 24 for pure liquids. From the slurry nozzle 18 multigeneration 15 sludge enters the tank 19 to the slurry product. At the end of treatment all the treated liquid is returned into the container 1. Removal of sludge from the tank 19 slurry of the product through the discharge pipe 22 is used, the compressed air supplied into the tank 19 through pipe 20.

For washing the container 19 to the slurry product uses water supplied into the tank through the pipe 21.

The proposed two-stage hydrocyclone unit allows for deep cleaning waste liquid from the solid particles of impurities diameter more than 10 μm up to 75-90%. The carbonization process fluid when PE is the euodius impurities from water-soluble form in the solid phase decreases their concentration 125 times.

Re-return of the purified liquid in the production saves chemicals 2 times.

Sources of information

1. Auth. mon. The USSR №904794, M CL 04 With 11/00.

Hydrocyclone unit, including the capacity for original waste liquid slurry of the product and pure liquid hydrocyclone with the input, the drain and slurry nozzles, a pump for supplying the original liquid in the hydrocyclone, the injector, characterized in that the plant is equipped with the second stage of the process in the form of multipication with the input, the drain and slurry pipes installed between the cyclone and the capacity of the purity of the liquid with the inlet and outlet nozzles, and the capacity for slurry product with nozzles for compressed air and drilling fluid is located below the slurry outlet of the hydrocyclone and multipication and injector installed on the supply line of the source fluid, made with a pipe for input of carbon dioxide from the container.



 

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