RU2459165C1 - Oven for adsorbent thermal regeneration - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: oven for adsorbent thermal regeneration contains a cylinder-conic chamber with a tangentially installed nipple for adsorbent gas suspension inlet, a hollow insert, heat medium outlet channels, a reflector installed so that to enable movement in the axial direction, a confusor for inlet of used heat medium flow being regenerated; the novelty consists in the fact that the hollow insertis designed in the form of alternating elements having an expanded and a narrowing part; in the narrow part of the last element a jet is positioned that, together with the narrow part of the hollow insert last element, forms an injection nozzle; the last element has a nipple for heat medium removal for disposal and is connected to the confusor for inlet of used heat medium flow being regenerated via a recirculation circuit; another aspect of novelty is the fact that the injection nozzle may be formed by way of the gas jet placement in the narrow part of the last element, the jet made of a semi-permeable material with a plenum chamber with helical channels arranged around it.

EFFECT: efficient removal of moisture from the solid component.

2 dwg

Description

The invention relates to the food industry and can be used in the processing of brewing waste.

Known dryer with active hydrodynamic mode [RF Patent No. 2159403, CL. F26B 17/10, 2000, B.I. No. 32], comprising a cylindrical conical chamber with a tangentially installed material inlet pipe, a reflector mounted for axial movement, a confuser for introducing the main flow of the drying agent, a hollow insert made in the form of a hyperboloid is installed along the chamber axis in its cylindrical part, upper cut which is rigidly fixed on the cylindrical surface of the chamber above the tangentially mounted material pipe, and an annular ring is provided between its lower slice and the side surface of the chamber the gap, and channels for outputting the spent drying agent, in which the drying of thermolabile materials is carried out in a swirling stream and a suspended layer with the formation of zones of its drying and drying.

The disadvantage of the design of the dryer is the inability to continuously mix the components of the mixture and its subsequent drying.

The closest in technical essence and the achieved effect to the proposed one is a dryer for implementing the method of obtaining food bioadditives from secondary raw materials of brewing production [RF Patent No. 2204263, Cl. A23K 1/06, A23L 1/30, F26B 17/10, publ. 05/20/2003], containing a cylindrical chamber with a tangentially installed material input pipe, a hollow insert in the form of alternating elements of a hyperbolic and spherical shape, while a sprayer and channels for drying the dryer are placed in front of the last hyperbolic insert in the area of its interface with the spherical part of the insert agent, a reflector mounted axially movable, a confuser for introducing the main flow of the drying agent.

A drawback of the design of the dryer is the impossibility of using it to regenerate an adsorbent, for example kieselguhr, due to the lack of devices in it for burning organic components from the treated mixture.

An object of the invention is the development of a furnace for thermal regeneration of the adsorbent, providing preliminary drying of the adsorbent and subsequent burning of organic components from it.

The technical task of the invention is achieved by the fact that in the furnace for thermal regeneration of the adsorbent, containing a cylindrical chamber with a tangentially mounted nozzle for the input of the gas suspension of the adsorbent, a hollow insert, channels for the output of the coolant, a reflector installed with the possibility of movement in the axial direction, a confuser for the input of the regenerated flow of the spent coolant , new is that the hollow insert is made in the form of alternating elements having expanding and tapering parts, and in a narrow part The last element contains an injector which forms an injection nozzle with a narrow part of the last element of the hollow insert, the last element having a coolant removal pipe for recycling and is connected by a recirculation circuit to a confuser for introducing a regenerated flow of spent coolant, as well as the fact that the injection nozzle can be formed by placing a nozzle for gas in a narrow part of the last element made of a semipermeable material, around which a pressure chamber with Intovy channels.

The technical result of the invention is to develop a furnace for thermal regeneration of the adsorbent, providing preliminary drying of the adsorbent and subsequent burning of organic components from it.

Figure 1 schematically shows a furnace for thermal regeneration of the adsorbent, figure 2 is a diagram of a possible implementation of the injection nozzle.

The furnace for thermal regeneration of the adsorbent (Fig. 1) consists of a cylinder-conical chamber, to the cylindrical part 1 of which a tangential pipe 2 is connected for introducing a solid component of the adsorbent (for example, kieselguhr) in the form of a gas suspension, a chamber for unloading a dry product 3, and the upper part of the chamber in the form of a cover 4 and the lower conical part of the chamber in the form of a confuser 5.

Along the axis of the cylinder-conical chamber in its cylindrical part 1 is a hollow insert 6 in the form of alternating elements having an expanding and tapering part. On the outer surface of the hollow insert 6 are channels 7 of adjustable cross-section for the withdrawal of part of the spent coolant.

A nozzle 8 is placed in the narrow part of the last element, which forms an injection nozzle with the narrow part of this last element, the last element of the hollow insert being equipped with a pipe 9 for removing heat carrier for recycling and is connected by a recirculation circuit 10 with a confuser 5 for introducing a regenerated flow of waste heat carrier.

A reflector 11 is located above the upper cut of the hollow insert, which moves axially with a drive (not shown).

An injection nozzle can also be formed by placing a nozzle for gas 8 in a narrow part of the last element made of semipermeable material 12, around which a pressure chamber 13 with screw channels is located.

The furnace for thermal regeneration of the adsorbent operates as follows.

The solid component of the adsorbent, for example kieselguhr, previously dehydrated, for example, mechanically from loosely bound moisture to a moisture content of 40-45% is fed into the cylindrical part 1 of the cylinder-conical chamber as a gas suspension through the pipe 2, where it is dried in a swirling stream. The partially dried solid component of the adsorbent, for example, kieselguhr, is lowered into the lower conical part 5 of the cylinder-conical chamber, where it is captured by the recirculating flow of waste heat supplied through the recirculation circuit 10. The drying process continues in the active hydrodynamic mode (zone I). In the center of the stream, a layer of the solid component of the adsorbent, for example, kieselguhr, is gushing out, and particles of the solid component of the adsorbent, for example, kieselguhr, swirled by a tangential flow, are omitted at the periphery, while the core of the fountain rotates around a vertical axis. The direction of rotation of the fountain core coincides with the direction of movement of the tangential flow. Drying particles of the solid component of the adsorbent (for example, kieselguhr) rise up and are captured by the flow of heat carrier, the speed of which increases due to a decrease in the cross section due to the configuration of the hollow insert 6. As the coolant moves through the hollow insert 6, its speed drops to the speed of particles of the solid component of the adsorbent (for example , kieselguhr) due to an increase in the bore due to the expanding configuration of insert 6, a suspended layer is formed (zone II), in which it is dry particles of a solid component of an adsorbent (for example, kieselguhr) to a moisture content of 2-3%. Then, the particles of the solid component of the adsorbent rise up and are captured by the flow of coolant, the speed of which increases due to a decrease in the cross section due to the configuration of the hollow insert 6. In the place of the greatest increase in the speed of the coolant in the narrow part of the last element, burner burns out at the temperature of 500-550 ° C organic components from a mixture of the solid component of the adsorbent (zone III).

At the same time, pre-purified air is injected into the screw channels of the pressure chamber 13 by a compressor (not shown) under pressure (for example, 0.1-0.11 MPa [Yu. I. Dytnersky et al. Membrane gas separation / Yu. I. Dytnersky, V. P. Brykov, GG Kagramanov. - M .: Chemistry, 1991. - 344 p.]), Ensuring its separation through a porous semipermeable material (for example, siloxane) 12, from which a narrow part of the last element is made. Oxygen passing through the pores provides a temperature of 500-550 ° C for burning organic components from the mixture of the solid component of the adsorbent (zone III).

The reflector 11 deflects the particles of the mixture in the radial direction, as a result of which the light particles of the mixture fall into the discharge chamber 3, in which the product and the waste coolant are separated, and the heavier particles of the mixture are returned to the suspended layer. The spent coolant is removed from the discharge chamber 3. Using a drive (not shown), the distance from the reflector 11 to the upper cut of the hollow insert is adjusted.

The proposed furnace for thermal regeneration of the adsorbent has the following advantages:

- the implementation of a hollow insert in the form of alternating elements having an expanding and tapering part, allows you to effectively remove moisture from a solid component (for example, kieselguhr) in an active hydrodynamic mode with alternating drying and drying zones to a moisture content of 2-3%;

- placement in the narrow part of the last element of the nozzle, which forms an injection nozzle with the narrow part of the last element, allows for a high degree of reliability to ensure the burning of organic components from the adsorbent;

- supplying the last element with a coolant removal pipe for recycling and connecting it with a recirculation circuit with a confuser for introducing a regenerated flow of waste heat carrier can reduce energy consumption by using its heat to dry the adsorbent.

Claims (2)

1. The furnace for thermal regeneration of the adsorbent, containing a cylinder-conical chamber with a tangentially mounted nozzle for the input of gas suspension of the adsorbent, a hollow insert, channels for outputting the coolant, a reflector mounted with the possibility of movement in the axial direction, a confuser for introducing the regenerated flow of the spent coolant, characterized in that the hollow the insert is made in the form of alternating elements having an expanding and tapering part, and a force is placed in the narrow part of the last element of the hollow insert NFA, which forms a narrow part of the last element of the injection nozzle, the latter element has a coolant removal tube for recycling and recirculation circuit is coupled with the input confuser regenerated spent coolant flow. 2. The furnace according to claim 1, characterized in that the injection nozzle is formed by placing a gas nozzle in a narrow part of the last element made of a semipermeable material, around which a pressure chamber with screw channels is located.

Images