SU868294A1 - Method of preparing drying agent in heat generator - Google Patents

Description

The invention relates to a drying technique, in particular to the preparation of a drying agent in heat generators, and can be used in chemical, food, microbiological and 5 other industries. .

A known method of preparing a drying agent in a heat generator by counter-swirling in one direction the jets of primary air, supplying fuel in the form of a torch into one of the jets with the formation of a fuel-air mixture and subsequent supply of jets of secondary air G11 to it.

The disadvantage of this method is the low thermal efficiency • due to insufficient mixing of the primary air with fuel and gas mixing with secondary air. 20 The purpose of the invention is the intensification of the preparation of the drying agent.

This goal is achieved by the fact that the jet into which the fuel is supplied is twisted 25 in a diverging spiral, and the secondary one in a converging manner, and the jet of secondary air is fed towards the fuel-air mixture at an angle adjustable from 30 to 60 °. thirty

The drawing schematically shows the design of a heat generator for implementing the proposed method.

The heat generator comprises a combustion chamber 1, a fuel atomizer 2, a pipe 3 and a swirl 4 of a first swirling stream of primary air in a diverging spiral, pipe 5, a gas distribution box 6 and a ring; end clearance 7 for supplying a second swirling stream of primary air. a converging spiral, a mixing chamber 8 with pipes 9 and an annular manifold 10 for supplying secondary air.

The heat generator operates as follows.

Fuel, gas or fuel oil is fed into the combustion chamber 1 of the heat generator using a spray gun 2. Primary combustion air is fed into the chamber 1 by counter-swirling flows, the first stream together with the sprayed fuel being introduced through the pipe 3 into the witness 4 along a diverging spiral, and the second - through the pipe 5 into the box 6 and the annular gap 7 along a converging spiral. The pipe 5 is connected tangentially to the box 6, which ensures the twisting of the second stream of primary air.

Thanks to this swirling of the first and second streams of primary air, intensive mixing with fuel is ensured, which in turn intensifies the combustion process due to turbulization of the fuel mixture. The supply of the secondary air flow through the pipes 9 at an angle adjustable from 30 to 60 ° into the chamber 8 allows. ₄ vigorously mix it with the combustion products coming from chamber 1.

Claims (2)

The invention relates to a drying technique, in particular, to the preparation of a drying agent in heat generators, and can be used in the chemical, food, microbiological and other industrial sectors. The known method of preparing the drying agent in the heat generator by counter spin in one direction of the primary air jets, supplying fuel in the form of a torch into one of the jets to form a fuel-air mixture and subsequent supply of secondary air jets to it G1- The disadvantage of the known method is low thermal efficiency due to insufficient mixing of primary air with fuel and mixing of gases with secondary air. The purpose of the invention is to intensify the process of preparing the drying agent. The goal is achieved by the fact that the jet to which the fuel is supplied is twisted along a diverging spiral, and the secondary jet is converging, and the jets of secondary air are fed towards the fuel-air mixture at an adjustable angle from 30 to 60. The drawing shows schematically the design of a heat generator for the implementation of the proposed method. The heat generator contains a combustion chamber 1, a fuel atomizer 2, a pipe 3 and a swirler 4 of the first swirling primary air flow through a diverging spiral, a pipe 5, a gas distribution duct 6 and an annular gap 7 supplying the second swirling primary air flow along. spiral converging, mixing chamber 8 with pipes 9 and annular manifold 10 for supplying secondary air. The heat generator works as follows. Fuel, gas or fuel oil is fed into the combustion chamber 1 of the heat generator using a spray 2. Primary air for combustion in the curler 1 is fed by opposite swirling streams, with the first stream along with the sprayed fuel being introduced through the pipe 3 into the scavenger 4 along the diverging spiral, and the second through the pipe 5 into the box 6 and the annular gap 7 at the descent5 of spirals. The pipe 5 is connected to the box 6 tangentially, which ensures the twist of the second stream of primary air. Owing to this twisting of the first and second primary air flows, it is intensively mixed with the fuel, which in turn intensifies the combustion process due to turbulence in the fuel mixture. The supply of secondary air flow through pipes 9 with adjustable angle from 30 to 40 in the chamber 8 allows. mix it intensively with combustion products coming from chamber 1. Invention A method for preparing a drying agent in a heat generator by counter-spinning primary air jets in one direction, supplying fuel in the form of a torch into one of the jets to form a fuel-air mixture and then supplying secondary air jets, characterized in that, in order to intensify the process of preparation of the drying agent, the jet into which fuel is fed is twisted along an diverging spiral, and the counter jet is , The secondary air jet is supplied toward the fuel-air CME-ICG under reguliruelshm 30 to 60 angle. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 757821, cl. Р 26 В 23/02, 1977.