Oven uglevyzhigatelnuyu with the regulator of the heat flow

 

The invention relates to the field of control automation pyrolysis of wood in a mobile uglevyzhigatelnuyu furnaces. The furnace comprises an outer insulating casing and the inner casing, provided with a compactible door and contains a removable container with narrow slits, transport devices and collection of recyclable waste, while it is provided with two diagonally spaced exhaust devices installed in the bottom area of the outer casing and containing an adjustable valve, and the channel of the heat flow contains discrete three-position switch associated with temperature sensors mounted in the inner housing and positioned at points, the temperature of which is with the highest reliability reflects the characteristic modes of the pyrolysis process, in the zone of unstable flow heat flow in the inner casing ejector holes with a variable diameter nozzle, and the upper arch of the case is made in the form of a paraboloid. The invention improves qualitative and quantitative indicators of the technological process - pyrolysis of wood while reducing loss of coolant due to more rational use of tasali management pyrolysis of wood in a mobile uglevyzhigatelnuyu furnaces. The closest, according to the applicant, the claimed device is “Uglevyzhigatelnuyu furnace” (EN 2151785 C1) containing a removable container on the truck, on the side walls of which are made elliptical cracks located over them at an angle motionless curtains, and on the inner walls of the body has movable curtains; on the container is concave cover, mounted on the roof of the inner case.

In the known device kindling and pereopisanie wood is carried out at the restricted access of atmospheric air, and the distribution of heat flow is regulated by means of insulating curtains. This method of control provides the change of the heat flow only in the direction of decreasing, resulting in equalization of the temperatures in the hearth and roof of the furnace. The main disadvantage of this control device is the inability to use the excess heat of the temperature field near the arch of the furnace to warm up the wood, available in low temperature zones. In addition, the lack of control over the temperature of the exhaust gases leads to an increased expenditure of the heat carrier.

The task of the invention yavlyaetsya loss of coolant due to more rational use of thermal field of gas flows.

The technical result of the invention is to improve the quality of coal and increase its output by increasing the degree of regulation of the heat flows inside the heat chamber.

The technical result is achieved due to the fact that the furnace is equipped with two diagonally spaced exhaust device that contains its own adjustable damper, and the channel of the heat flux in the furnace contains a discrete three-position switch associated with temperature sensors mounted in the inner housing and positioned at points, the temperature of which is with the highest reliability reflects the characteristic modes of the pyrolysis process. This allows the redistribution of heat flow volume of the heat chamber, which will increase the efficiency of heat exposure on raw materials, reduce the consumption of coolant due to its repeated use.

The present invention is characterized by the following essential features:

a) restrictive - outer heat insulating casing, an inner casing, thick-walled door, removable container with narrow slits, the transport device moves, the source of the heat flow and collection of recyclable wastes;

b) is feasible dampers; suction devices are mounted in the lower zone of the outer casing; a discrete three-position switch associated with temperature sensors mounted in the inner housing and positioned at points, the temperature of which is with the highest reliability reflects the characteristic modes of the pyrolysis process; ejector holes of different diameter in the inner enclosure of the furnace.

The causal link between the technical result and declare the essential features is that the uniformity of flow of the pyrolysis process is achieved through the use of additional control devices. The temperature difference between the roof and the furnace, resulting in the pyrolysis process and causing local regions of overheating and underheating of wood is reduced by changing the direction of heat flow carried out by switching the channel of the heat flow from one exhaust device to another. The more heated the gas-vapor mixture placed in the vault of the furnace is directed in a less heated lower region of the furnace, thereby increasing the uniformity of thermal treatment of raw materials.

Installation involves downloading the wood in the container, ostanoveetsa the pyrolysis process. Under the plant body is a collection of žižka.

Heat to heat the wood and ensure it perepilivanija receive from the gaseous products of combustion in the furnace. Kindling fuel lead seal casing of the furnace.

At the end of the process perepilivanija and cooling coal boot the door is opened, the container is rolled out, take off the wheels and unload.

In Fig.1 and 2 depict uglevyzhigatelnuyu oven.

Installation (Fig.1 and 2) contains a split air cavity 1 outer casing 2, the inner case of the heat chamber 3, welded from sheet steel, the body is made independently from the casing to eliminate thermal deformation during operation.

From the face side shroud slots fortified lift door 4 of the porous refractories, lined with steel plates. The door is lifted by the lifting device 5, which is driven by a motor 6 and is blocked by the fingers 7 on both sides. The arch of the inner case is made in the form of a paraboloid to provide additional turbulence of the gas flow. The lateral surfaces of the heat chamber holes (ejectors) 8, with the upper holes are made with a larger diameter than the bottom.

In nm the switch (controller) 11, which are driven by electric motors 12. Exhaust device equipped with adjustable dampers 13, 14.

In the lower part of the flue pipe is made of sewage manholes 15, 16 for cleaning chimneys from the remaining products of combustion.

On the outer shroud of the gas duct installed relief valve 17, and the lower the temperature sensors 18, 19, 20 and opening 21 for determining the porosity of perepilivanija wood using a metal probe. Idle holes sealed screw caps.

Trolley 22 is equipped with racks, inside which is mounted a removable container 23 with wood. In the lower part of the furnace is installed storage tank (collection) 24 for collecting condensate (žižka). In the side wall of the collection made the hole in which the welded flue pipe 25 from the chamber 26. In the lower part of the collection there is a drain hole provided with a valve 27, there is a space 28 for attachment adjacent the furnace.

Furnace the furnace is fitted with adjustable valves for loading firewood 29 and podopechnogo holes 30.

The process of producing charcoal in the considered setup is as follows.

The container 23 with pre-loaded and dried wood placed the food on the track is moved inside the heat chamber 3. The moving truck is limited to the braking device. The door 4 is closed and covered with clay to asbestos. Open adjustable dampers 13, 14 and exhaust device 9, and 10, and three-position switch 11 is set to a position that allows free passage of the heat flow from the chamber 26, a chimney (flue) 25 in the air cavity 1. Then in the furnace is the ignition of the fuel. Once the fuel starts to burn, adjustable dampers, furnace 29 and podopechnogo hole 30 is closed and sealed.

The heated mixed mass heat flow from the air cavity 1 through the injection hole 8 and the raw materials fall to the bottom of the heat chamber 3. In the initial stage endothermic process up to 150With heats up wet material, removal of free moisture from the wood, from 150-300Is heating the dry material, begins the decomposition process is less persistent organic substances, carbon dioxide, carbon monoxide, acetic acid and enters pereopisanie. These processes occur due to the oxygen contained in the wood. Progress is monitored by the temperature sensors 20, 21, 22, arranged in the inner case is if you do not reduce the amount of external oxygen into racks ignition occurs raw materials. As the flow of the pyrolysis process according to the signals from the sensors is gradually reduced by means of adjustable valves 13 and 14, the cross section of the exhaust duct devices 9 and 10 and the switch 11 is periodically transferred from one extreme position to the other, which provides a change of direction of heat flow inside the heat chamber and increases the uniformity of the temperature field inside the chamber.

At a temperature of 300-450With adjustable dampers 13 and 14 completely cover the cross-section of the chimney exhaust devices. Starts an exothermic process: the rapid release of heat from the raw materials, the formation of carbon, removal of volatile organic compounds. At a temperature of 450-550With complete sealing of all connections is the process of ignition of coal.

Control of the heat flow helps to prevent thermal explosion (possible penetration of oxygen in the hot gas stream), to perform technological regulations and thereby improve the quality of the final product is coal.

In all stages of the process perepilivanija wood liquid condensate flows into the collector 24 and can be recycled or burned in a furnace.

The willingness of coal is defined IU the air traffic management.

After cooling to a temperature of 50Is the coal is discharged from the container 23, which by means of a lifting device 5 opens the door 4, the container moves to the outside and is discharged into the tank-tushilnik.

Using the above installation, you can expect the following technological advantages in comparison with the analogue of:

- improving the quality of coal due to a more uniform flow of process; uniformity is achieved with a deeper degree of equalization of the temperature field inside the heat chamber with the help of additional regulating devices;

- loss of coolant due to more rational use of thermal field of gas flows.

Claims

Uglevyzhigatelnuyu furnace comprising an outer insulating casing and the inner casing, provided with a compactible door and contains a removable container with narrow slits, transport devices and collection of recyclable waste, characterized in that it has two diagonally spaced exhaust devices installed in the bottom area of the outer casing and containing regeneratornyj sensors, mounted in the inner housing with spaced points, the temperature of which is with the highest reliability reflects the characteristic modes of the pyrolysis process, in the zone of unstable flow heat flow in the inner casing ejector holes with a variable diameter nozzle, and the upper arch of the case is made in the form of a paraboloid.

 

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