ES2395164A1 - System for the forced evaporation of liquid waste by means of low-pressure dynamic vibration nebulisation using a solar stirling motor as a power source - Google Patents

Abstract

The invention, represented in Figure 1, relates to a system for the forced evaporation of liquid waste, based on the nebulisation of the effluent to be evaporated inside a chamber (1) in which dry air and heat are applied. The system also includes a fan (2) which generates a forced flow of air, which hot air can come from the exterior or be obtained by means of heating inside the system using a heat exchanger or an electric heating resistor (3). In order to obtain microscopic drops and, consequently, a large contact surface in the air/liquid interface, instead of using evaporation meshes that become clogged and less efficient over time, the invention comprises the use of a set of dynamic vibration nebulisers (4) which operate at low pressure and which receive effluent after it has undergone undemanding filtering and been blown in. Inside the chamber, the air/liquid mixture undergoes a quasi-adiabatic process in which, by means of a sensible to latent heat exchange, the air is cooled and the liquid is evaporated in a highly efficient manner. The non-evaporated drops of liquid are collected in the lower part of the chamber (5). In order to prevent the emission of aerosols to the atmosphere, which can be dragged along by the forced flow of wet air, a drop separator (6) is used that is located at the outlet of the evaporation chamber. The conditions of the intake air are measured with a system of sensors (7), which can be used to alter the quantity of liquid to be circulated through the nebulisers and the speed of the fan in order to obtain maximum evaporation efficiency. A solar Stirling motor provides the necessary electricity and a fraction of heat to heat the intake air.

Description

System of forced evaporation of liquid waste by vibro-fogging

low pressure dynamics using a Stirling solar motor as energy source

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Object of the invention

System of forced evaporation of liquid waste with vibro- nebulizers

dynamics that require low liquid inlet pressure and filtering without large

requirements, being of special application in the field of the olive industry

for the drying of lye or brine, or in the treatment of any other

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contaminating residual product, with high water content such as

mining waste, from the chemical or agribusiness industry. The system using a

computer or similar remotely controllable, adapts its operation throughout

moment depending on the conditions of the inlet air and the type of liquid a

evaporate, to obtain maximum evaporation efficiency. The employment of a

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Stirling solar motor as a preferred renewable energy source, allows to obtain

electricity to drive the pump and electrical elements, plus the

heat from the cold focus of said motor serves to partially heat the

inlet air

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State of the art

To date, there are no patented industrial systems that meet for the

same effect all the elements that make up this invention, being

differentiator of this invention the use of low dynamic vibro-nebulizers

working pressure and low demands on filtering and the preferred use of a

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Stirling solar motor as a source of energy.

It is usual to locate inventions in which an air current is used

forced to apply directly on the liquid to evaporate, in other cases it

it does on evaporation mesh and other times it is about fogging outdoors

with a simple spray, so the droplet size is very large and the

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evaporation process ineffective.

Some examples that use forced evaporation in its various variants

They are:

P2024097_A6: Water evaporation system in reservoirs by means of

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wind power.

P2157798_81: Module for forced evaporation of liquids contained in rafts and the like. P2230937 _A 1: Device for evaporation and atmospheric condensation of aqueous media P2187379_A1: Integral treatment system for liquid waste dressing olive. P2021191_A6: Installation for the integral purification of the alpechin. P2023726_A6: Cooling tower. P2025470_A6: Installation for seawater desalination. P2085799_T3: Convection towers. P2190829_81: Device for evaporation and atmospheric condensation of aqueous media P2245851_81: Forced evaporation system of alpechin or other waste liquids P2328885_A1: Evaporating system of wastewater and similar by energy renewable. P2208112_B1: Drying process of "alperujo". P211 0913_A1: Solar panels to desalinate seawater. P2296519_A1: Saline solar evaporator. P2323338_A1: Dual plant procedure with renewable energy for the desalination of seawater and obtaining electrical energy.

Description of the figures

Next, a figure that helps to better understand the invention and that is expressly related to an embodiment of said invention is presented very briefly, being presented as a non-limiting example of it, and based on which innovations will be more easily understood. and advantages of the evaporation system object of the invention.

Figure 1.- It shows a general scheme of a preferred embodiment of the equipment that determines the system of the invention and that consists of an airtight box (1), a fan (2), an air heating system (3), a set of vibro-dynamic nebulizers (4), a concentrated liquid return outlet (5), an anti-aerosol drop separator (6) and a system for measuring the conditions of the intake air (7).

Description of the invention

The forced evaporation system proposed by the invention resolves

effective removal of large amounts of waste, allowing the

use of rafts or deposits of reduced surface area since there is a

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rapid evaporation of the water that is part of this waste without the raft

reach the limit of your capacity.

The system described based on vibro-dynamic nebulizers provides indisputable

Advantages: Does not require a high pressure drive system, effluent filtration

It is not critical, the pipes do not have to be high pressure since the same in

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its interior is low compared to commercial high fogging system

pressure and finally the vibro-dynamic nebulizers are of less materials

demanding what lowers its price not suffering the inconveniences of the r: nallas

evaporation when treating this type of waste with suspended particles.

The system is environmentally friendly not only because it prevents emission

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of aerosols, but also because it makes use of solar energy from an engine

Stirling.

Embodiment of the invention

A preferred embodiment will be described according to Figure 1, in the case of

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the table olive industry for illustrative purposes and without limitation.

The liquid contained in the raft (brine and lye), is aspirated by a

pipe that has at its end a non-return valve and a filter for impurities

thick. The suction pump in turn generates the pressure drive of

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necessary work for vibro-dynamic nebulizers. Before entering the

system described by the invention and which is isolated from the outside by a box

airtight (1), filtering is done to ensure that they will not occur

obstructions in the nebulizers. Hot air driven fan (2)

or optionally heated by the exchanger or the electric resistors (3),

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it affects the liquid in the form of micro-drops from the nebulizers

vibro-dynamic (4), which produces a heat transfer that produces

a high efficiency evaporation. Liquid particles that have not been

evaporated by being larger or waste, fall by gravity to the bottom

of the tank generating a return outlet of concentrated liquid towards the

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   raft (5). The air stream is charged with a mixture of water vapor and

drops of liquid in suspension, to prevent the latter from going outside

as aerosols, a drop separator (6) is disposed at the evaporator outlet. To obtain maximum evaporation efficiency, the conditions of the inlet air (7} are measured in real time, these data are processed in a computer

or similar remotely controllable and acts on the speed of rotation of the pump and fan to, according to the psychometric diagram and the nature of the effluent, find the point of maximum efficiency at all times. The contribution of electrical energy and a part of the thermal energy for an eventual heating of the air is obtained by converting the solar energy into a Stirling motor.

Claims (2)

1.-System of forced evaporation of liquid waste with vibro- nebulizers

dynamics that require low liquid inlet pressure and filtering without large

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requirements described generically in figure 1, being of special application

in

he ambit from the industry olive for the desiccation from the bleach or

brines, or in the treatment of any other contaminating residual product,

with

high water content such as mining waste, from industry

chemical or agroindustrial, which is characterized because it is constituted by

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functional combination of:

to)

A box waterproof where be carries to cape the fogging Y

evaporation of liquid effluent (1).

b)

a fan that generates a forced stream of hot air that

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can come from a residual heat source or of energies

renewable (2).

and)

a heat exchanger or electric heating heater for

eventually heat air frie (3).

d)

a set of vibro-dynamic nebulizers that work at low

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pressure, with low filtering requirement, without loss of efficiency due to

progressive sealing and easy replacement (4).

and)

a sealed chamber with an outlet in its lower part to collect the

liquid drops that have not been evaporated (5).

F)

a drop separator for avoid the issue from aerosol sprays to the

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environment being dragged by the forced stream of moist air

generated (6).

g)

A system of sensors which measures the air conditions to the

entry (7).

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2-According to claim 1, characterized in that is computer controlled or

Similary

in Connection remote allowing Modify the parameters from

performance and quantify performance.

3.-According

claim one, characterized why in its description favorite

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It uses a Stirling solar motor as an electrical and partially heat supply.