SU661205A1 - Device for drying fluid and paste-like materials - Google Patents

Description

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The product was acquired by spray guns and can be used in chemical, microbiological, metallurgical and other industries.

Known installations for drying liquid and paste-like materials are pulsating, with a stream of heated spray, its agent, containing a combustion chamber with a resonance tube and nozzles of the input and output of the material and the drying agent Qt. These installations are the closest to the described invention in terms of technical drying, and the achieved result. The initial product is introduced into them into a resonant tube, in which a pulsating, heated stream of a pulsating agent sprays the material, ensuring its partial visibility. The final drying takes place in a drying chamber.

In the installation described here, the short residence time of the sprayed material in the resonant tube — the zone of impact of the pulsating flow — does not allow for complete drying of the material; a significant release of acoustic energy and its dissipation leads to a decrease in fully--, iJ ,,.:. f; rf ,, I

YOU use the energy of combustible fuel; In addition, the unit has large dimensions and loss of the finished product with a drying agent.

 the invention is the intensification of the drying process.

The goal is achieved by the fact that a screw insert is installed in the resonant tube, and the outlet nozzle for the drying agent is located past the axial tube of the resonant tube.

The drawing shows the installation for drying flowable and pasty materials, obsh, i look.

Claims (2)

The installation for drying flowable and paste-like materials contains a combustion chamber 1 of the fuel-air mixture, a resonance tube 2, a nozzle 3 for introducing the source material installed in the combustion chamber 1, a nozzle 4 for drying agent located along the axis of the resonant tube 2 at its outlet, a screw insert 5, designed to increase the residence time of the processed material in it and installed in the resonant tube 2 in front of the outlet 4 of the output of the drying agent, the collection 6 of the finished product, the end mounted resonator ansna pipe. The angle of inclination of the helix of the insert 5 to the longitudinal axis of the resonant tube 2 should not be more than acceptable and less than optimal for these parameters of the gaseous atomizing and drying agent, as this leads to a flow and deterioration of its contact with the fluid and pasty material and unjustified loss m of energy. A plant for drying flowable and pasty materials in a pulsating: a stream of heated spray agent works as follows. In the combustion chamber 1 serves a fresh portion of the air-fuel mixture. Flowable or pasty material is also supplied through nozzle 3. During combustion of the air-fuel mixture and sudden pressure increase in combustion chamber 1, there is an abrupt change in the state of glio-gas atomizer and drying agent, leading to the formation of a shock wave, the front of which acts on the original the material sprays it and dries. A two-phase mixture consisting of a gaseous spraying agent and a strand, partially dried material leaves the combustion chamber 1 and enters the resonant tube. 2. Since the resonant tube 2 is equipped with a screw insert 5, the sprayed material slows down its speed and moves% of the wall of the resonant tube 2, which increases the residence time of the material in the zone of impact of the shock wave. The movement of the material is accompanied by intensive heat and mass transfer between the sprayed material and the gaseous spraying and drying agent, which helps to remove the main amount of moisture from the source material. The drying of the material and its separation from the drying agent occurs in the vortex zone formed by the walls of the resonant tube 2 and located along the axis of the resonant tube by the nozzle 4 of the outlet of the drying agent. The finished product released in the vortex zone then enters the collection 6 of the finished product and is removed outside the installation. Thus, the described installation will allow to increase the efficiency of the process of drying flowable and pasty materials by 3-4 times. At the same time, the noise level is reduced and the cost of noise suppression measures is reduced; acoustic energy is useful, which is undergoing a reverse conversion to thermal energy. The described installation will reduce the cost of the drying process by reducing capital costs by 5 times, reducing fuel consumption by 30%, while completely eliminating the flow of compressed air in the case of drying paste-like materials. An apparatus for fluid and paste-like materials in a pulsating flow of a heated spray agent containing a combustion chamber with a resonant tube and a material inlet and outlet nozzles and an essential agent, which in order to intensify the drying process, a screw insert and the outlet of the drying agent is located behind the insert along the axis of the resonant tube. Sources of information taken into account in the examination 1. US patent number 3618655, cl. 159-4, 1970. tiitryiextaliStiHS - f: