SU887898A1

SU887898A1 - Method and apparatus for feeding dust-like material into rotary furnace

Info

Publication number: SU887898A1
Application number: SU802888654A
Authority: SU
Inventors: Винцас Винцо Монтвила; Альгимантас Юляус Митузас
Priority date: 1980-02-19
Filing date: 1980-02-19
Publication date: 1981-12-07

Description

(54) СПОСОБ ПОДАЧИ ПЫЛЕВИДНОГО МАТЕРИАЛА Бб ВРАЩАЮЩУЮСЯ ПЕЧЬ И УСТЮЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ(54) METHOD OF SUBMITTING DUSTYABLE MATERIAL Bb ROTATING OVEN AND ELIMINATION FOR ITS IMPLEMENTATION

1one

Изобретение относитс к промышленности строительных материалов, а именно, к технике и технологии подачи топлива и к устройствам дл сжигани , и может быть использовано во вращающихс печах при изготовлении цементного клинкера.The invention relates to the building materials industry, namely, fuel supply technology and technology and combustion devices, and can be used in rotary kilns in the manufacture of cement clinker.

Известен способ подачи пылевидного материала в зону спекани вращающейс печи, включающий подачу струи материала по оси печи.A known method for supplying pulverized material to the sintering zone of a rotary kiln involves the feeding of a jet of material along the axis of the kiln.

Устройство дл осуществлени известного способа подачи пылевидного материала в зону спекани вращающейс печи .форсунку , установленную по оси печи 1.An apparatus for carrying out a known method for feeding pulverized material into the sintering zone of a rotary kiln. A nozzle mounted along the axis of the kiln 1.

Недостаток способа, а также и устрЫ{ства, заключаетс в малой производительиости и большом выносе из печи подаваемого материала .The disadvantage of the method, as well as the device, lies in the low productivity and large removal of the feed material from the furnace.

Наиболее близким по технической сущности и достигаемому результату к описьгааемому изобретению вл етс способ подачи пылевидного материала во вращающуюс печь путем ввода потока пылевоздущной смеси вThe closest in technical essence and the achieved result to the invention being described is the method of feeding pulverized material into a rotary kiln by introducing a stream of dust-air mixture into

свободное пространство печи пересекающимис в зоне спекани стру ми.the free space of the furnace is intersected by the streams in the sintering zone.

Устршство д осуществлени зтого способа содержит пылевоздуигаые форсунки, установленные под углом одна к Щ)угой 2.The procedure for implementing this method contains dust-emitting nozzles installed at an angle of one to U) 2.

Недостатком известных способа и устройства вл етс большой пылевьшос материала печи вследствие пр молинейности движе ни пьшевоздушк(Ж смеси, что ведет к снижению производительности печи.A disadvantage of the known method and device is a large dust mass of the furnace material due to the linearity of the movement of the air gun (F mixture, which leads to a decrease in the productivity of the furnace.

Целью изобретени вл етс повышение производительности печи путем уменьшени уноса мате1жала.The aim of the invention is to increase the productivity of the furnace by reducing the ablation of the material.

Указанна цель достигаетс тем, что в спо собе подачи пылевидного материала во вращающуюс печь путем ввода потока пылевоздушной смеси в свободаое пространство печи пересекаюпщмис стру ми, одну из струй закручивают в винтовой поток.This goal is achieved by the fact that, in the process of feeding pulverized material into a rotary kiln by introducing a stream of dust-air mixture into the free space of the furnace, intersecting the jets, one of the jets is twisted into a helical stream.

Claims

In the device for feeding the dust-like material into a rotary kiln, containing dust-air nozzles, it is installed at an angle to one another. wife swirler and installed on the axis of the furnace. FIG. 1 shows a device, a longitudinal section; in fig. 2 is a view along arrow A in FIG. 1. A device for carrying out this method comprises a spin nozzle 1 installed along the axis of the furnace. Additional dusty nozzles 2 are installed around the nozzle 1 at an angle to the furnace axis. The axis of the nozzle has a tip 3 with twisting blades. The device works as follows. Through additional dusty air nozzles 2 dusty material flows. The dust-blowing flow entering the axial nozzle 1 blades twists into the screw flow. Due to the arising centrifugal force, the raw particles twisted in the screw thread are separated from the center of the stream and intersect the jets — emerging from the additional dust-air nozzles 2. In the torch zone, the dust-air jets instantly heat up and reach the temperature of the gaseous medium. When crossing the pie. Hot jets of heated raw material particles collide and intensively aggregate, causing particles to fall out of the gas stream and precipitate in a furnace. The intersection of dust-air jets in the zone of the torch allows to reduce dust removal, provides intensive heat transfer from the torch to the material, and increases the productivity of the rotary kiln. Claim 1. A method of supplying pulverized material to a rotary kiln by introducing a stream of dust-air mixture into the free space of the kiln by intersecting jets, characterized in that, in order to increase the productivity of the kiln by decreasing the unr of the material, one of the jets is twisted into a helical flow. A device for feeding pulverized material into a rotary kiln containing dust-air nozzles installed at an angle to one another, characterized in that one of the nozzles is provided with a evacurator. 3. The device according to claim 2, of which is so that the nozzle with a swirler is installed along the axis of the furnace. Sources of information taken into account in the examination of 1. Loschinsk A. V and others. Intensification of the processes of burning cement clinker. M., stroiizdat, 1966, p. 46.

2. The UK patent number 1326456, cl. F 4 V, pub. 1973 (prototype).