SU1019204A1 - Fluidized bed furnace for activation of powdered material - Google Patents

Abstract

A PSEEDO-LIQUID LAYER FURNACE FOR THE ACTIVATION OF A POROID-BASE MATERIAL, comprising a housing with a lid, a gas distribution device,. gg located in the lower part of the housing, a pipe for supplying the heat transfer medium to the gas distributing device, loading and unloading devices, in order to increase the efficiency and reliability of the furnace, it is removed from the removable mesh filter mounted on the lid, and the gas distribution The device is made with tangential elbows with which it is connected to the housing. (L Aitmi / fufMfeaMfHif.

Description

The invention relates to the production of activated carbon and can be used to activate powdered materials in the medical and chemical industries.

Closest to the invention to the technical essence is a fluidized bed furnace for activating powder-like materials, comprising a housing with a lid, a gas distribution device in the lower suit of the housing, a coolant supply pipe to the gas distribution device, and branch pipes for loading the original and unloading activated materials 1

A disadvantage of the known design. consists in the fact that the inlet of the heat transfer medium for the gas distributing device in the lower part of the housing is such that when the heat supply is cut off (product discharge, emergency shutdown, the product inevitably enters the gas distribution collector manifold which drastically reduces the reliability of the furnace. There is no filter in the top cover increases the size of the furnace, which affects the performance and additional energy consumption for its heating.

The aim of the invention is to improve the performance and reliability of the furnaces.

This goal is achieved by the fact that a fluidized bed furnace for activating powdered material, comprising a housing with a lid, a gas distributing device located in the lower part of the housing, a heat transfer pipe to the gas distribution device, a loading and unloading device, is equipped with a removable strainer mounted on the lid, and the gas distributor the device is made with tangential knee-shaped supplies, through which it is connected to the housing. The design of the gas distribution device with elbows and tangential holes prevents the product from entering the collector when the heat carrier flows (discharge of the product, change of the strainer, emergency cut-off, which improves the reliability of the furnace, reduces the loss of high-quality raw materials and activated product. The presence of the strainer allows to regulate the mixing intensity of the product over a wide range, significantly reduce the dimensions of the shell and as well as prlnostyo exclude carryover product.

FIG. 1 shows a furnace, general view; in fig. 2 is a section A-A in FIG.

The furnace contains a conical body 1, a gas distribution device 2 with tangential elbows 3 supply heat transfer pipe 4 to the collector 5, discharge

device 6, a cover 7 with a bump 8, a pipe 9 for loading the raw material and a pipe to the exit of gases with a quick-release strainer 11. All parts of the furnace are made of heat-resistant materials. The top cover 7 is removable and is attached to the body 1 by wedges, evenly spaced around the circumference. The quick-release strainer 11 is a conical tumbler, covered with a wire cloth. The discharge device 6 is made in the form of a conical shut-off valve.

The furnace is operated as follows.

The coolant through pipe k is fed into the collector 5 and then through the elbows 3 of the gas-distributing device 2 into the furnace body 1, forming in its lower part a vortex flow, through which

intensive mixing occurs

loaded through the pipe 9 of the original product, and in the lower part of the furnace a rotating layer is formed, and in the upper part - a boiling one.

To limit the product entering the filter 11, the cover 7 is provided with an additional baffle 8. The finished product is unloaded through a conical opening in the lower base of the furnace by means of a discharge device b. The implementation of the gas distribution device with tangential knee-shaped supply of heat-transfer agent in the proposed furnace makes it possible to increase its reliability. The presence of filtering devices in the lid significantly reduces overall dimensions, i.e. reduce energy consumption for its heating.

Thus, increasing the reliability of the furnace and making it possible to reduce the overall dimensions makes it possible to increase the productivity of the furnace.

A-l

FIG. 2

Claims (1)

Pseudo-LIQUID FURNACE FOR ACTIVATION OF POWDER MATERIAL, comprising a housing with a cover, a gas distribution device located in the lower part of the body, a pipe for supplying coolant to a gas distribution device, a loading and unloading device, characterized in that, in order to increase the productivity and reliability, it is equipped with a removable strainer mounted on the cover, and the gas distribution device is made with tangential knee-shaped inlets, by toryh it compounds <but with the body.