CN2625732Y

CN2625732Y - Low discharging and collecting dust type combustion furnace

Info

Publication number: CN2625732Y
Application number: CN 03254239
Authority: CN
Inventors: 熊承庆; 张振华; 李应锐; 石虹
Original assignee: HUANGSHI BUILDING MATERIAL ENERGY SAVING EQUIPMENT FACTORY
Current assignee: HUANGSHI BUILDING MATERIAL ENERGY SAVING EQUIPMENT FACTORY
Priority date: 2003-05-28
Filing date: 2003-05-28
Publication date: 2004-07-14
Anticipated expiration: 2013-05-28

Abstract

The utility model relates to an industrial high-temperature burning furnace. The utility model has a furnace-body which is built by laying firebricks. A main firebox and an assistant firebox are arranged in the furnace-body. The utility model is characterized in that a downward-discharging dust-collecting device is added between the main fire-box and the assistant fire-box. The dust-collecting device has a vortex cavity and an air-inlet which is connected with an air outlet of the main fire-box, the air-feeding is arranged above the vortex cavity, and a dregs-draining cut which is connected with the assistant fire-box is arranged below the vortex cavity. A vent-pipe is vertically arranged at the middle part of the vortex cavity and an air-feeding cut is arranged in the middle of the vent-pipe and a smoke-venting pipe is connected with the lower end of the vent-pipe. The utility model solves the dust-removing problem directly in the boiler-body, and the utility model has compact structure, low manufacturing cost and energy-saving and high efficiency capability. The utility model is suitable for the improvement of various coal-powder furnaces or boiling furnaces.

Description

The following row formula combustion furnace that gathers dust

(1) technical field: the utility model relates to a kind of industrial combustion furnace.

(2) background technology: the coal furnace of coal-powder boiler, fluidized bed furnace and other form all can produce a large amount of dust, and the time that dust stops in the stove under worst hot case is very very brief, often still uncombusted just flies out outside the stove, restrict the direct utilization of flue gas and adopted heat exchange to become the hot-air mode to increase the above energy consumption of 25-30%, people are seeking a kind of efficient high temperature formula combustion furnace always for this reason, reduce dust emission,, improve the flue gas quality to scheme to improve burn-off rate.

(3) summary of the invention: it is lower that the utility model will solve existing combustion furnace burn-off rate exactly, and the high problem of discharging dust contained flue gas provides a kind of having of efficient energy-saving to arrange the formula combustion furnace that gathers dust down.

Concrete scheme of the present utility model is: set up lower-discharging type high temperature dust-precipitator between main chamber in existing combustion furnace and the subsidiary combustion chamber, this dust-precipitator has been set up lower-discharging type dust-precipitator structure between main chamber and subsidiary combustion chamber, this dust-precipitator has a cyclone chamber, and the top of cyclone chamber is provided with into that mouth is connected with the tangential air intake of the outlet flue of main burning furnace; The below of cyclone chamber sets out cinder notch and is connected with subsidiary combustion chamber; A blast pipe vertically is equipped with at the middle part of cyclone chamber; The middle part of blast pipe offers air inlet, and the below of blast pipe connects pipe.

In order to make the uncombusted coal dust of collecting in the dust-precipitator cyclone chamber enter subsidiary combustion chamber smoothly, the bottom design of the utility model dust-precipitator cyclone chamber is the inclined-plane, and the slag notch design is connected with subsidiary combustion chamber at low side.

Its middle part air inlet of blast pipe in the dust-precipitator cyclone chamber described in the utility model has three at least and arranges along branches such as perisporiums.

The utility model has been set up the structure of gathering dust, and makes dust obtain second-time burning, has improved burn-off rate effectively, has also improved the fume emission quality simultaneously, has reached the purpose of efficient energy-saving; It is simple for structure lucid and lively, and is cheap, is convenient to build, and test shows: its resistance is less than 500Pa, and power consumption is low, can be used for various high-temperature dust removal occasions.

(4) description of drawings:

Fig. 1 is main cutaway view of the present utility model (A-A of Fig. 3 analyses and observe);

Fig. 2 is the B-B cutaway view of Fig. 1;

Fig. 3 is the C-C cutaway view of Fig. 1.

Among the figure: 1-body of heater, 2-main chamber, 3-flue, 4-cyclone chamber, 5-blast pipe, 6-air inlet, 7-pipe, 8-slag notch, 9-subsidiary combustion chamber.

(5) specific embodiment:

The utility model all adopts refractory brick and waters material feeding and build by laying bricks or stones and form, and its concrete structure is referring to Fig. 1-3, and it has rectangular body of heater 1, and its left side is a main chamber 2, in be partitioned into subsidiary combustion chamber 9, the right is the dust-precipitator structure.This dust-precipitator has cyclone chamber 4, and its top has into mouth be connected with the tangential air intake of the outlet flue of main chamber 2 by flue 3, and the bottom surface of cyclone chamber 4 is the inclined-plane, and its low side is left cinder notch 8 and is communicated with secondary combustion furnace 9.The middle part of cyclone chamber 4 has been arranged vertically blast pipe 5, and the middle part of blast pipe 5 has four air inlets 6, and five equilibrium is uniform all around along tube wall, and the below connects pipe 7.

Operation mechanism of the present utility model is as follows: under the swabbing action of using the unit negative pressure, the high temperature dust flue gas that is produced by combustion furnace moves downward along the rotation of indoor chamber by the flue 3 tangential cyclone chambers 4 that enter dust-precipitator at a high speed from the outlet flue of main chamber 2, under action of centrifugal force, dust gets rid of to locular wall in the flue gas, at the bottom of dust produces in gravity and motion and is deposited to the chamber under the effect of downward component on the inclined-plane, concentrated slide is gone into subsidiary combustion chamber 9 and is overflowed outside the stove through the secondary after-flame, and air inlet 6 and the outlet flue 7 of the flue gas that the center, chamber is cleaned on blast pipe 5 extracted out outside the stove.

Claims

1. arrange the formula combustion furnace that gathers dust down for one kind, has the body of heater that refractory brick is built into, design has main chamber and subsidiary combustion chamber in the body of heater, it is characterized in that: between main chamber and subsidiary combustion chamber, set up lower-discharging type dust-precipitator structure, this dust-precipitator has a cyclone chamber, and the top of cyclone chamber is provided with into that mouth is connected with the tangential air intake of the outlet flue of main burning furnace; The below of cyclone chamber sets out cinder notch and is connected with subsidiary combustion chamber; A blast pipe vertically is equipped with at the middle part of cyclone chamber; The middle part of blast pipe offers air inlet, and the below of blast pipe connects pipe.

2. the formula combustion furnace that gathers dust of arranging down according to claim 1, it is characterized in that: the bottom design of dust-precipitator cyclone chamber is the inclined-plane, the slag notch design is connected with subsidiary combustion chamber at low side.

3. the down row according to claim 1 formula combustion furnace that gathers dust is characterized in that: its middle part air inlet of the blast pipe in the dust-precipitator cyclone chamber has three at least and arranges along branches such as perisporiums.