CN86207935U

CN86207935U - Brick kiln taking full advantage of waste heat

Info

Publication number: CN86207935U
Application number: CN 86207935
Authority: CN
Inventors: 黄祖光
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-10-18
Filing date: 1986-10-18
Publication date: 1987-08-19

Abstract

The utility model relates to a brick kiln making the best of the waste heat. Each kiln chambers has a bypass flue connected with a heat-regulation flue by a cone sluice. The heat-regulation flue is positioned above the kiln door and the heat-regulation flue laps the outside of the kiln pass in a ring way. The high-temperature smoke of the calcination zone kiln chamber enters the non-preheated adobe kiln chamber through the heat-regulation flue. The high-temperature smoke dries and heats adobes in advance, and then expels from a smoke vent and a main flue. The bottom of the kiln chamber is provided with a combustion supporting pipe to help the kiln chamber to calcine. The calcination speed of the brick kiln is fast and the quality of the calcination is good. Coal consumption is low because the residual heat can be used for a plurality of times. Environmental pollution can be improved.

Description

The Kiln with the function of utilizing waste heat that a kind of waste heat repeatedly utilizes

The utility model relates to a kind of kiln, especially for the annular kiln of roasting brick and tile.

Kiln with the function of utilizing waste heat is a roasting apparatus of producing brick and tile continuously, and its output is big, and efficient is higher, uses very generally, moves and gives hot adobe to giving the torrid zone but existing annular kiln is a high-temperature flue gas by making the roasting band.It is cold giving the preceding adobe of heat, and this makes that the variations in temperature of adobe is very fast, because it is generally wayward to advance the water content of kiln adobe, if the adobe water content is higher, then easily produces heat and bursts line, influences brick and tile quality.And the high-temperature flue gas that gives the torrid zone is directly discharged to flue collector by smokejack, and waste heat can not make full use of in annular kiln, contains coal dust concentration height in the flue gas, discharges contaminated environment through chimney.

The purpose of this utility model provides a kind of can adobe in the annular kiln oven dry in advance with the high-temperature flue gas of roasting brick and tile, heating, and the Kiln with the function of utilizing waste heat that waste heat is repeatedly utilized.

Technical solution of the present utility model is: all have branch flue (5) in every firing chamber of annular kiln and communicate with an accent heating flue (4) together through awl lock (6), the high-temperature flue gas of roasting brick and tile enters the adobe firing chamber that does not give heat that is separated by paper retaining (26) by transferring heating flue, enters main chimney flue from smokejack again.Preferably will transfer heating flue to build by laying bricks or stones above wicket, annular surrounds the outside, kiln road, and connection one transfers hot gate (16) to be connected with air exhauster (12) through pipeline on the accent heating flue.After the high-temperature flue gas of roasting firing chamber (7) enters the accent heating flue from the branch flue that gives hot cell (8), open the branch flue awl lock and the smokejack awl lock that need adove biscuit kiln chamber (as (9)), transfer the high-temperature flue gas in the heating flue just to flow to main chimney flue from branch flue, adobe firing chamber, this path of smokejack, the high-temperature residual heat of flue gas is dried the adobe in this firing chamber gradually and is heated in flowing.Advance to this firing chamber when giving thermal bake-out when the roasting duration and degree of heating like this, its adobe is fully dry, and has certain temperature.Make and give hot time shortening, rate of roasting is accelerated, and adobe has improved quality by oven dry in advance, has relaxed the requirement to the adobe water content, the coal dust powder in the high-temperature flue gas, and through the adsorption filtration effect of the adobe of wetting, the pollution of discharge reduces greatly.Transfer heating flue to build by laying bricks or stones, outside the kiln road, reduced the construction volume of the underground branch flue of annular kiln, improved the heat-insulating property of annular kiln again in the wicket top.In case of necessity, transfer the high-temperature flue gas of heating flue directly to extract other purposes of work out through air exhauster (12); At this moment also can be to the main chimney flue maintenance that disembarks.

Be connected to the combustion-supporting pipeline (18) of being with the gate (17) that keeps out the wind on the exhaust duct (22) of air exhauster, combustion-supporting pipeline leads to the air outlet (19) of each firing chamber bottom centre respectively through several valves (20).It is combustion-supporting to send high-temperature flue gas to roasting kiln chamber, is embedded with heat exchanging water pipe (21) in the bottom of annular kiln and the vault, all can make full use of waste heat.

Description of drawings:

Fig. 1 is that wheel kiln baking of the present utility model and high-temperature flue gas move towards B---the B sectional drawing

Fig. 2 is the A of Fig. 1---the A sectional drawing

Fig. 3 is the C of Fig. 1---the C sectional drawing

Below in conjunction with accompanying drawing the utility model is described in further detail.

Annular kiln example of the present utility model is fire of 18 trolley klining, and fiery line speed is 1.5～1.7 meters/hour, and every 10,000 bricks standard coal consumption is 0.8 ton.The main chimney flue of this annular kiln (1) is in the centre in ring kiln road, have smokejack (2) in bottom, indoor, every cellar for storing things, communicate with main chimney flue, smokejack and main chimney flue joint are equipped with awl lock (3) and control the logical of this flue and close, outer lower portion has branch flue (5) in every firing chamber in kiln road, branch flue is identical with the smokejack cross dimensions, its turnover upwards be positioned at the accent heating flue (4) that wicket top annular surrounds the outside, kiln road and communicate, transfer heating flue to be built into 1200 * 800 millimeters crowned section, be equipped with awl lock (6) control the logical of branch flue in branch flue and the joint of transferring heating flue and close by common brick.The accent heating flue outside in stage casing, wheel cellar for storing things laterally has the exhaust column that a passage leads to air exhauster (12).The hot gate (16) of accent is arranged on the passage.Have a passage downwards communicates with underground flue (10) and the residual heat flue (11) that the main chimney flue lower vertical is arranged at the middle part of main chimney flue.Residual heat flue (11) and air exhauster (12) communicate in the same side and with air draft pipe, residual heat flue is provided with waste heat gate (14) with the main chimney flue place of communicating, residual heat flue is provided with waste heat gate (15) with the air exhauster pipeline place of communicating, square crossing place at residual heat flue and accent heating flue, have a flue (24) up and down, and be provided with an awl lock (25) on flue top.Underground flue (10) leads to chimney (23) at the opposite side of residual heat flue, and underground flue and main chimney flue joint are provided with gate (13).Be connected to the combustion-supporting pipeline (18) of being with the gate (17) that keeps out the wind on the exhaust duct (22) of air exhauster, combustion-supporting pipeline leads to the air outlet (19) of each firing chamber bottom centre respectively.Every air outlet all has a valve (20) control.Valve (20) is located at the annular kiln outside, is embedded with heat exchanging water pipe (21) in the bottom of annular kiln and vault, can take corresponding protection against the tide, insulation measure in humid area annular kiln bottom, as the shop slag etc.

When the wheel kiln baking brick and tile, open roasting kiln chamber (7) and give the branch flue awl lock (6) of tropical firing chamber (8), high-temperature flue gas is introduced transferred heating flue.And along the duration and degree of heating direct of travel, open the need drying that one or several is separated by paper retaining (26), the branch flue awl lock of (as (9)) of heating adobe firing chamber and smokejack awl lock.The high-temperature flue gas of introducing just can be in 12～40 hours, water content up to 10%～14% brick blank drying, even needed only the adobe piling and advance kiln and do not dried, heat with regard to available high-temperature flue gas by pressure break, and do not produce heat burst line in roasting, ensure the quality of products.High-temperature flue gas enters main chimney flue by wet adobe firing chamber, flows to chimney (23) through valve (13), and the smoke pollution that chimney is discharged reduces 70%～80%.High-temperature flue gas in transferring heating flue or main chimney flue can be from air exhauster extraction utilization by gate (16) or gate (14) and (15), (as sending base storehouse dry brick), at this moment, when opening the gate that keeps out the wind (17) on the exhaust duct (22) and the combustion-supporting pipeline valve (20) of roasting kiln chamber, the flue gas of sending firing chamber's air outlet to can be combustion-supporting, transfer the high-temperature flue gas in the heating flue also can be through gate (25) from passage (24), row behind residual heat flue or row to chimney or row to air exhauster.

Claims

1, a kind of annular kiln that is used for continuous baked for producing brick and tile, one ring kiln road is arranged, several coal feeding holes are arranged at the top, have several Jiao Men in the outside, kiln road, by paper retaining [26] roasting kiln chamber and adobe firing chamber are separated, all have smokejack [2] in every firing chamber and communicate with chimney [23] and air exhauster [12] respectively, it is characterized in that: all have branch flue [5] in every firing chamber and communicate with an accent heating flue [4] together through awl lock [6] through awl lock [3], main chimney flue [1], underground flue [10] or residual heat flue [11].The high-temperature flue gas of roasting brick and tile does not give hot adobe firing chamber [9] by transferring heating flue to enter, and enters main chimney flue from this firing chamber's smokejack.

2, according to the Kiln with the function of utilizing waste heat of claim 1, it is characterized in that transferring heating flue to build by laying bricks or stones in the wicket top, annular surrounds the outside, kiln road, and it transfers hot gate (16) and pipeline to be connected with air exhauster (12) through one.

3, according to the Kiln with the function of utilizing waste heat of claim 2, it is characterized in that being connected on the exhaust duct (22) of air exhauster the combustion-supporting pipeline (18) of band Adjustable device air lock system (17), combustion-supporting pipeline leads to the air outlet (19) of each firing chamber bottom centre respectively through several valves (20).