ES2752240A1 - SYSTEM FOR THE DEHYDRATION VALORIZATION OF ORGANIC WASTE OR SMELLY PRODUCTS, WITHOUT EMISSION OF SMELLS, VAPORS OR GREENHOUSE GASES, G.E.I. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

It is the solution to the problem of the generation of smelly livestock waste and other aggressive or unpleasant products. The cost to the rancher is very low. The process is carried out continuously with closed circuit air to prevent odors from escaping. It does not generate emissions of CO2, NO2, SO2, or CH4 greenhouse gases, etc. Lacks fireplaces. The air is treated with ozone and ultraviolet light for sterilization and use without biological risk for crops. The air temperature is 60ºC, for the pasteurization of the material. The final humidity will be 8% to prevent its biological activity, its storage and packaging for distribution as organic fertilizer. Very competitive cost with mineral or synthetic fertilizers. The energy consumed is renewable electricity in the order of 0.22 kWh/kilo of dehydrated product. Every 240 t/year of fertilizer generates one job. (Machine-translation by Google Translate, not legally binding)

Description

D E S C R I P C I Ó N

SYSTEM FOR THE DEHYDRATION VALORIZATION OF ORGANIC WASTE OR SMELLY PRODUCTS, WITHOUT EMISSION,

GREENHOUSE VAPORS OR GASES, G.E.I.

TECHNICAL SECTOR

Due to the effects generated, the invention belongs to the sectors:

1) Ecological environmental

2) Agricultural Livestock

BACKGROUND OF THE INVENTION

In the prior art, the dehydration of organic waste is carried out with the convection exchange of hot air with the product to be dehydrated or dried. Upon overcoming the surface tension, water vaporization occurs, which is carried by the air stream. Normally, this air is expelled to the outside with the dispersion of the vapors in the surroundings of the dehydration facilities. The "biofilters" for gases and odors have been found to be too expensive and of reduced effectiveness.

Along with the emission of water vapors, aromatic compounds with a lower evaporation temperature than water are accompanied, which in the case of waste, generates a smelly and unhealthy air pollution, intolerable for the development of human and animal activity .

On the other hand, the source of the heat necessary for the evaporation of the water from the product to be dehydrated, is usually the combustion of finite or finite fossils such as hydrocarbons, gasoline, diesel, coal, natural gas, etc. Emissions of carbon dioxide in gaseous form CO2, and other Greenhouse Gases, GHG emitted by combustion, are penalized by international regulations and agreements, in accordance with the actions that prevent Global Warming and Climate Change. Also the combustion of energy crops and forest crops such as wood, despite being considered a renewable energy source, generates carbon dioxide emissions in CO2 gaseous form, penalized by the regulations and agreements cited by the United Nations, UN.

Mention should also be made of possible emissions to the atmosphere of toxic compounds such as dioxins, furans, SO2, NOx, etc. from the combustion of solids.

On the other hand, the residues are used in fertilization of agricultural crops without any prior treatment for the elimination of toxic products such as heavy metals or pathogenic microorganisms, for which the norms and recommendations are not respected. The risks are evident in the market for products from livestock farms and agricultural products themselves.

The use of manure in the fertilization of agricultural holdings has triggered an activity not so necessary for the farmer as for the rancher, who considers it a method of eliminating their residues.

Fertilizers of mineral and synthetic origin such as Nitrogen, Phosphorus and Potassium (NPK) complexes in the forms of urea, monoammonium phosphate, diammonium, ammonium sulfate, dicalcium phosphate), potassium chloride and potassium sulfate represent a costly alternative for the farmer , when trying to eliminate the use of animal waste "fresh" that is, without conditioning.

The channels of rivers and underground aquifers are, in general, the last victims of the expansion of the uses of this type of waste in agriculture. The waters contaminated with ammoniacal and nitric nitrogen, are populated with algae that take advantage of the nutrients and develop in an extraordinary way. The result is the eutrophication of the waters and the disappearance of the existing fauna due to the consumption of oxygen.

The great expansion of livestock farms for food production is the cause of the phenomena that are trying to combat with the present patent. Legislation on the matter is abundant and limiting livestock activity without adequate solutions having been found by any Administration. The regulations do not provide any technical solution although, in the drafting of the Hydrological Plans, the interest of the legislator for the quality of the waters of the rivers.

With the aim of collaborating with our society and in order to remedy the aforementioned problems, achieving the elimination of deficiencies and improving both productive and investment yields and maintenance costs, there is a method widely studied by the patent applicant called SYSTEM FOR THE DEHYDRATE VALORIZATION OF ORGANIC WASTE OR MALFORENT PRODUCTS, WITHOUT EMISSION OF SMELLS, VAPORS OR GREENHOUSE GAS, described below.

. EXPLANATION OF THE INVENTION

The system is an installation that comes to solve the great problem of generating manure, slurry and animal waste, in addition to other smelly products that you want to eliminate.

In the general application of the patent applied for, the residues are filtered for the elimination of the main water, and generate a final solid product with a residual humidity of around 5% to 8%. With this humidity no evaporation is generated, no odor propagation or perceptible biological activity, obtaining a stable product. In this way, dehydrated products, such as sanitary controlled organic fertilizers, can be stored, packaged and distributed for marketing.

Filtered waters can be purified by conventional methods in order to be stored, used as irrigation or discharged to a public channel.

Wet wastes, with a water content of the order of 40%, are processed in the dehydration system to reduce their water content.

The invented system includes two fundamental Zones and an active set.

Dehydration Chamber Zone (1) - Fig. 1, 2, 3 and 4

Dehumidification, Heating and Air Sterilization Zone (14) - Fig. 1, 2, 3 and 4.

Compressor and heat transfer circuit (21) - Fig. 11

The Dehydration Chamber Zone (1) comprises the following parts:

- Dry and humid air supply ducts (2)

- Dehydration chamber insulation panels (3)

- Conveyor belts for product movement (4)

- Strip for stripping the surface of the strips (5)

- Hopper to feed the product to be dehydrated (6)

- Supply auger screws (7)

- Variable motors for belt movement (8)

- Fans for air movement (9)

- Hot and dry air inlet into the dryer (10)

- Warm and humid air outlet from the dryer (11)

- Rotary vane valve for closing (12)

- Dehydrated product outlet (13)

The Air Dehumidification, Heating and Sterilization Zone (14) comprises the following parts:

- Condensation air cooling equipment (15)

- Fog Separation Equipment (Demister) (16)

- Air heating equipment for dehydration (17)

- Ozone generation equipment (18)

- Ultraviolet light emission equipment (19)

- Condensate drain siphon (20)

PARTS DESCRIPTION

- Dry and humid air supply ducts (2)

They are the air ducts that feed the dehydration chamber to generate the entrainment of water from the product to be dehydrated and outgoing from the dehydration chamber, once evaporation of the water from the product to be dehydrated has occurred. They include two helical fans that propel the air at a speed that allows the execution of the movement process in closed circuit, from the dehumidification zone to the processing chamber, once dehumidified. Fig. 2 and 4.

- Dehydration chamber insulation panels (3)

In order to keep the temperature of the dehydration chamber and the conveyor belts at a high temperature, reducing heat losses, insulating panels will be placed throughout the environment. Fig. 5, 6, 7, 8, 9 and 10.

- Conveyor belts for product movement (4)

In order to achieve the movement of the product to be dehydrated, trying to cross the current with the hot and dry air that the dehydration carries out, overlapping conveyor belts with reverse movements and superior discharge will be placed. Fig. 5.

- Strip for stripping the surface of the strips (5)

These tools (5) produce the surface cleaning of the conveyor belts, of the residues that may remain attached to them.

- Hopper to feed the product to be dehydrated (6)

To keep the system feeding continuously, a loading hopper with push augers will be used. Fig. 5, 6 and 7.

- Supply auger screws (7)

To load the system continuously, feed augers (7) will be used with their motorized rotation to achieve the expected humidity of the dehydrated slurry at the exit of the system. It acts jointly with a leveling roller of the product layer to be processed. Fig. 5, 6 and 7.

- Variable motors for belt movement (8)

The conveyor belts will be powered by electric reduction motors (8) with speed variation. Fig. 6 and 7.

- Fans for air movement (9)

For the movement of the air, two fans (9) will be located, one to blow the dry air towards the air inlet of the dehydration chamber (10) and the other to suck in the humid air from the humid air outlet of the dehydration (11). Fig. 7.

- Hot and dry air inlet into the dryer (10)

It is the entry of dry hot air into the dehydration chamber, received from the dry air heating zone (17), to generate the product dehydration process. Fig. 5, 6, 7, 8, 9 and 10.

- Warm and humid air outlet from the dryer (11)

It is the exit of the warm humid air from the dehydration chamber towards the cooling zone and condensation of the humidity of the air in the cold batteries (15). Fig. 5, 6 and 7.

- Rotary vane valve for closing (12)

It is the closing system of the dehydration chamber (1) that prevents the hot and dry air from leaving, allowing the dehydrated product to exit (13) by rotating the paddle system (12). Fig. 5 and 6

- Dehydrated product outlet (13)

This is where the dehydrated products exit with a humidity of 8% and a temperature of 60 ° C.

- Condensation air cooling equipment (15)

For the cooling of the humid air and to generate the condensation of the water it contains, a battery of tubes (15) is available for the exchange of heat between the humid air and the cold thermal fluid. The liquid thermal fluid inside the the tubes evaporate, absorbing the latent heat of vaporization that the water needs for its condensation.

- Fogger or demister equipment (Demister) (16)

It is necessary for the separation of the water droplets in the form of mist that can remain in the dehumidified air. Fig. 8.

- Air heating equipment for dehydration (17)

To heat cold and dry air and generate its temperature rise for use in dehydrating the product, a battery of tubes (17) is available for the exchange between cold dry air and hot thermal fluid. The thermal fluid is compressed and condensed, generating condensation heat that is used to heat dry air. Fig. 8, 9 and 10.

- Ozone generation equipment (18)

For the oxidation and elimination of odors present in dry air, an ozone gas generator (18) will be located. In this way, the air at the outlet of the cold and dehumidified gases at the inlet of the heating battery will be deodorized. It will also produce a degradation by oxidation of the organic matter present and formed by microorganisms and others. Fig. 8.

- Ultraviolet light emission equipment (19)

For the inactivation of the microorganisms present in the dry air, an ultraviolet spectrum wave emitter (19), called UV light, will be located. UV light provides a fast and efficient inactivation of microorganisms through a physical process. When bacteria, viruses, spores, molds, yeasts and protozoa are exposed to the germicidal wavelengths of UV light, they become unable to reproduce, reactivate and cause damage. In this way, dehumidified or dry air will be disinfected and sterilized. Fig. 8.

- Condensate drain siphon (20)

The siphon allows the isolation of the external environment from the cooling zone and condensation of the water contained in the air. The apparatus (20) prevents the air from leaving without hindering the condensed water from leaving to the outside for its use. Fig. 8 and 10.

- Heat exchange fluid pumping equipment (21)

For heating the thermal fluid in the dry air heating zone (17), as well as for cooling the fluid in the humid air zone (15), a thermal fluid compression mechanism is available to reach the temperature of heating of the dry air zone. The assembly and operation scheme is proposed. Fig. 11.

DESCRIPTION OF THE AIR PROCESS

As can be seen in the diagram of figure 12, the process presents the three states of air in a closed circuit without contact with the outside:

First stage: the dry air that is blown into the lower part of the conveyor system of the dehydration chamber (10), at an approximate temperature of 60 ° C and 4% relative humidity and exits through the upper part (11) with the evaporated humidity of the product to be dehydrated, at an approximate temperature of 30 ° C and 90% relative humidity.

Second stage: the humid air from the dehydration system is introduced into the cooling equipment (15), generating a condensation of the water contained in it. The water from the condensation falls to the bottom of the equipment (20) where it is collected and leads to external storage through a siphon block valve (20). During this process, the air temperature is reduced from 30 ° C and 90% relative humidity to 5 ° C and 91% relative humidity, reaching the dew point or condensation point of the water.

Third stage: dry air from the cooling and condensing equipment is introduced into the heating equipment (17), to raise its temperature to 60 ° C and 4% relative humidity and blow into the dehydration chamber (10).

DESCRIPTION OF THE PRODUCT PROCESS

By means of the hopper and the endless screws, with the leveling system, a layer of 5 cm of uniform thickness is dosed on the first conveyor belt. The belt will move with a variable speed of 0.5 to 5 meters per minute equivalent to 0.5 rpm up to 5 rpm. The speed and thickness of the layer are regulated to achieve the expected water content or humidity in the final product. During their advance, the products to be dehydrated meet an air flow in the opposite direction that, taking advantage of the difference in surface tension of the product's water, achieves their surface evaporation.

At the end of the path of the first strip, the surface is stripped with the stripping profile or sheet (5), to achieve the separation of the layer and the fall of the product on the second strip. In this way, the lower part of the product layer that had not been in contact with the air, when turning over, comes into contact with it, managing to evaporate the water contained in its lower part.

The displacement of the second band is generated similarly to the first, at a speed similar to that of the first band. The fall of the product after the pickling of the second band, on the third band, will generate another tumbling to achieve that the whole mass is dehydrated in a uniform way by the convective vaporization of the hot air.

The movements of the third and fourth bands will generate more flips to achieve greater uniformity in drying.

The fifth and last band will be the one that produces the final turn. In this band, the product will reach a higher temperature, using dry air with a moisture content of 4% and a temperature of 60 ° C. At this temperature the product is subjected to the elimination of pathogenic microorganisms, essential for use as agricultural use and handling by humans and animals. The Ozone O3 content will help sterilization.

The last band discharges in the rotary vane valve that, by means of its rotation, discharges the dehydrated product towards the exterior, preventing the exit of the process air.

BRIEF DESCRIPTION OF THE DRAWINGS

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, some drawings are attached as an integral part of said description where, by way of illustration and not limitation, the following has been represented:

Figure 1.- Right front wired view.

The wire drawing is presented by way of example of a functional dehydration system. In the drawing you can see all the lines, with the "transparent" pieces.

Figure 2.- Right front hidden view.

The drawing is presented as an example of a functional dehydration system. Only visible lines can be seen in the drawing, with the "opaque" parts. The two fundamental zones (1) and (14) and the air conduction pipes between the two (2) are indicated.

. Figure 3.- Left rear wired view.

The wire drawing is presented by way of example of a functional dehydration system. In the drawing you can see all the lines, with the "transparent" pieces.

Figure 4.- Left rear hidden view.

The drawing is presented as an example of a functional dehydration system. Only visible lines can be seen in the drawing, with the "opaque" parts. The two fundamental zones (1) and (14) and the air conduction pipes between the two (2) are indicated.

Figure 5.- Right side view of the dehydration chamber.

The drawing is presented with the upper, lower, left side, front and rear insulating panels without the right insulating panel (3), in order to appreciate the conveyor belts (4), with their stripping sheets (5), the loading hopper of the product to be processed (6) and the dosing augers (7) with their leveling roller. You can see the arrangement of the inlet hole for hot and dry air (10) as well as the outlet hole for humid and warm air (11). You can also see the situation of the rotary reed valve (12) that serves as a block for the air outlet and the discharge hole for dehydrated products (13).

Figure 6.- Left lateral view of the dehydration chamber.

The drawing is presented with the top, bottom, left, front and rear side panels (3), in order to appreciate the reduction motors (8) with the bearing supports, the loading hopper of the product to be processed (6) and the dosing augers (7) with their leveling roller. You can see the arrangement of the hot and dry air inlet hole (10) as well as the warm and humid air outlet hole (11). You can also see the situation of the rotary reed valve (12) that serves as a block for the air outlet and the discharge hole for dehydrated products (13).

Figure 7.- Top view of the dehydration chamber.

The drawing is presented without the upper insulating panel, and with the front and rear side panels (3), in order to appreciate the upper conveyor belt, the reduction motors (8) with the bearing supports, the product loading hopper a process (6) and the dosing augers (7) with its leveling roller. You can also see the situation of the impulsion and aspiration fans (9) located in the hot and dry air inlet holes (10) and the warm and humid air outlet (11).

Figure 8.- Side view of the Air Dehumidification, Heating and Sterilization Zone (14)

The drawing is presented without the right side insulation panel, and with the top, bottom, front and rear panels (3), in order to appreciate the interior of the area with its heat exchangers for cooling the warm humid air (15) with its air duct separators, fog separator or "demister" (16), their heat exchangers for heating cold and dry air (17) with their air duct separators, ozone generator (18) and emission source ultraviolet, UV light, condensation water collection ramp and its siphon drain (20). On the front and rear you can see the dry hot air outlets (10) and the warm humid air inlets (11).

Figure 9.- Front view of the Dehumidification, Heating and Air Sterilization Zone (14)

The drawing is presented in wired format with the right and left side insulating panels, and with the upper and lower panels (3), ozone generator (18) and emitter of ultraviolet, UV light and condensation water siphonic drainage (20) . On the front and rear you can see the dry hot air outlets (10) and the warm humid air inlets (11).

Figure 10.- Top view of the Dehumidification, Heating and Air Sterilization Zone (14)

The drawing is presented without the upper insulating panel, and with the lower, front and rear side panels (3), in order to appreciate the interior of the area with its heat exchangers for cooling warm humid air (15), with its separators conduction system, its heat exchangers for heating cold and dry air (17), ozone generator (18), ultraviolet light emitter (19), condensation water collection ramp and its syphonic drain (20 ). You can see the air ducts (2), one for the dry hot air outlet (10) and another for the entry of warm humid air (11).

Figure 11.- Heat exchange fluid pumping equipment (21)

Figure 11 shows the diagram of the operation of the thermal fluid movement device. The equipment generates the cooling in the tube batteries (15) that reduce the temperature of the warm humid air, coming from the dehydration chamber and produces the contribution of heat in the tube batteries (17) that heat the dry cold air coming from the previous cooling batteries.

The thermal fluid in the form of gas, coming from inside the battery tubes (15) is compressed in the compressor (C) and sent into the battery tubes (17) where its condensation with the heat emission. Through the V.E.T. o Thermostatic Expansion Valves, the liquid is injected into the tubes of the battery (15) to generate its evaporation and energy absorption with the consequent reduction in temperature. The circuit is equipped with a filter (F) that removes unwanted particles.

Figure 12.- Diagram of the states of the air in closed circuit

Figure (12) shows the diagram of the states of the air in the closed circuit. The states are cyclical circulating inside the dehydration chamber with an entrance at the temperature of 60 ° C and a relative humidity of 4% and an exit at a temperature of 30 ° C and a relative humidity of 90%.

Air enters through the hole (11) drawn by the fan (9) in the cooling and condensation zone of the water, at a temperature of 30 ° C and a relative humidity of 90%, leaving it at a temperature of 5 ° C and a relative humidity of 91%.

Air enters the heating zone at the previous temperature of 5 ° C and a relative humidity of 91% leaving it at a temperature of 60 ° C and a relative humidity of 4%. It is sucked by the fan (9) and driven into the dehydration chamber through the lower opening (10).

PREFERRED EMBODIMENT OF THE INVENTION

The described device has a preferred embodiment as a dryer for fecal matter of pigs, which currently represents a very serious problem for the viability of livestock farms. The usual practice has generated a total rejection of the activity and is constantly persecuted by the authorities responsible for public health, livestock technicians and those responsible for general environmental policy. The stinky smells together with the risks of contagion of various diseases and ills, are presented to society as a challenge to overcome inescapably.

The circular economy is advertised to justify the use of manure in field fertilization, but research has shown that the risks of accumulation of pathogenic microorganisms and pests on farms are very high. The emission of greenhouse gases G.E.I. it is also a problem due to the effects on climate and global warming. The patented treatment is essential, for example, to be able to name pig slurry as a recycled product with guarantees of environmental and sanitary quality.

As an example of how the system works, the unit production of each animal on the order of 9.0 liters / animal and day is considered. The amount that the Preferred Embodiment of the example invention can process is 61,925 liters / day. It is estimated for a farm or group of farms with a total of 6,881 pigs.

The number of daily working hours will be 23 h / day and the number of working days will be 356 days / year. The hours of daily stop will be dedicated to preventive maintenance of the elements of the system. The 9 annual days of shutdown are reserved for equipment replacement.

The determined system has the following hourly and annual parameters:

Fresh manure input: 2,692 kg / hour 22,045 t / year Filtered water production 2,366 l / hour 19,376 m3 / year Drained manure production 326 kg / hour 2,699 t / year

The production of dehydrated slurry with 8% humidity will be:

Production of dehydrated slurry 213 kg / hour 1,744 t / year Production of condensed water 113 l / hour 925 m3 / year

COSTS

The electrical power of the system includes:

1 Compressor motor

2 fans air movement

5 Belt Motors

1 ozone generator

1 Ultraviolet radiation generator

The total power of the system amounts to 47 kW.

The annual energy consumption in the plant is 384,590 kWh, which at a price of € 0.17 / kWh, represents a total cost of € 65,380 / year.

The energy cost of the manufacturing process of the purified slurry is € 37.49 per ton, or € 0.037 per kg. Condensed water is not charged any cost.

INCOME

The slurry from the farms will be collected by tanks with suction systems. The company will charge an amount of € 6.00 for each cubic meter of collection. The income of the production plant for the admission of 22,045 m3 of slurry each year will be € 132,270 / year.

The sale price of the slurry recovered and sterilized with 8% humidity will be € 0.25 / kg. The income of the production plant from the sale of the 1,744,044 kg of dehydrated slurry with 8% humidity will be € 436,011 / year

From the processing income, the annual cost of separating the water from the slurry and the purification treatment of this must be deducted for its use in irrigation or in the discharge to public channels.

The unit's production costs must be attributed to a set of units that form a properly manageable plant. In the example that served as the basis for the general study, an area of 1,901 km2 with a human population of 48,806 inhabitants and a pig herd of 170,000 animals was considered.

The total structure is as follows:

Revenue from sales and services € 14,464,330

Supplies € 102,648 1.05% Personal 126 € 4,128,000 42.19%

Other operating expenses € 2,765,580 28.26%

Amortization of fixed assets € 1,925,370 19.68%

Financial expenses € 862,914 8.82%

Total € 9,784,512 100.00%

Income before tax € 4,679,818

Tax 701,973 € 15.00%

Results after taxes € 3,977,845 27.50%

The system is industrially applicable both, from a constructive point of view, in an electromechanical workshop with electricity and electronics sections, assisted by auxiliary companies of a biological and microbiological nature with referrals to agricultural and livestock machinery.

Claims (4)

1. System (1) and (2) for the valorization by dehydration of organic residues or smelly products, without emission of odors, vapors or greenhouse gases, G.E.I., characterized in that it comprises: • a hopper with auger feeder (6) and (7) for continuous dosing of the material to be dehydrated and rolling in uniform thickness on a conveyor belt. • a set of conveyor belts (4) that performs the continuous movement of the material and its turning. • a drive for turning the drive cylinders of the belts using reduction motors (8) with speed variation. • a strip pickling procedure (5) to prevent the accumulation of material on the surface. • the creation of an air duct formed by the conveyor belts and lateral and frontal closures for continuous dehydration by hot air in countercurrent with the material to be dehydrated. • perimeter insulation of the dehydration chamber, based on protected insulating panels (3). • a rotary lock valve (12) that prevents the hot air from escaping to the outside, allowing the dehydrated material to continuously exit (13). • a set of air ducts with two combined helical fans (9) of aspiration (11) and impulsion (10). • a set of heat exchangers (15) fed by the liquid of the thermal fluid that, with its evaporation inside the tubes, generates an absorption of heat on the surface of the tubes that produces the condensation of the humidity contained in the humid air circulating outside. • a mist separator (16) or "demister" that removes water droplets from the leaving air of the humidity condenser. • an ozone gas generator (18) for the elimination by oxidation of the odors present in the dehydrated air. • a set of heat exchangers (17) fed by liquid from the thermal fluid, which, with its condensation inside the tubes, generates an emission of heat on the surface of the tubes that produces the heating of the dehydrated air circulating through its Exterior. • a UV ultraviolet light emitter (19) for the inactivation of the microorganisms present in the hot air. • a condensation water collection ramp with a siphon drain (20) to the outside. 2. System (14) according to claim 1 characterized by the use of tube batteries forming a set (21) that dehumidifies the humid and warm air, taking advantage of the evaporation of a thermal fluid inside the tubes, with the consequent demand for heat in the battery (15). 3. System (14) according to claim 1 characterized by the use of tube batteries forming a set (21) that performs the heating of the dehydrated and cold air, taking advantage of the condensation of a thermal fluid inside the tubes, with the consequent emission of heat in the battery (17). 4. Continuous system (14) according to claim 1 characterized by the combination of the two batteries mentioned in claims 2 and 3 so that, starting from a warm and humid air, leaving the dehydration chamber, hot air is achieved and Dry that will allow to carry out the process of dehydration of wet materials in a closed circuit without contact with the outside environment.