CN207646126U - Compound porous checker brick - Google Patents

Abstract

The utility model discloses a kind of compound porous checker brick, include the clayey brick matrix with a plurality of gas channel, and high siliceous dope layer is compounded on the inner wall of the gas channel.The thickness ratio of the siliceous dope layer of height and brick matrix is 1:6~1:8.The utility model has the advantage of simple in structure, not only remain the preferable thermal shock resistance that checker brick itself have, the siliceous dope layer of height being compounded on gas channel inner wall can also effectively prevent infiltration of the alkaline matter into brick matrix in high-temp combustion flue dust, improve the alkali resistance gas pickling performance of checker brick, the service life for substantially prolonging checker brick reduces the maintenance cost of coke oven.

Description

Compound porous checker brick

Technical field

The utility model is related to coke oven refractory brick, more particularly, to a kind of compound porous checker brick.

Background technology

Checker brick are piled up in capacity coke oven regenerative chamber, are given off by alternately accumulation of heat/heat release to recycle combustion chamber A kind of porous refractory brick of high-temperature flue gas waste heat.

Traditional coke oven checker brick generally use fireclay refractory, wherein Al₂O₃Content is this viscous between 40% ~ 50% Soil property checker brick good in thermal property, resistance to rapid heat cycle can be good at the change dramatically for meeting the regenerative chamber alternating temperature difference, going into operation just Phase can show preferable using effect.However, with the increase of use time, the alkaline matter in coke oven high-temp combustion flue dust It can gradually deposit on the gas channel inner wall of checker brick, the complex thermal coke especially mostly used at present, high-temp combustion flue dust The amount of neutral and alkali substance is more, corrodes seriously the air flue inner wall of checker brick, cracks so as to cause checker brick, air flue inner wall hair Bubble, bulging, cause air flue to block, directly affect the heat supply of coke oven combustion chamber and the supply of air capacity, cause coke oven normal Work.

Invention content

The purpose of this utility model is to provide a kind of compound porous checker brick that can extend coke oven normal service life.

To achieve the above object, the utility model can take following technical proposals：

Compound porous checker brick described in the utility model include the clayey brick matrix with a plurality of gas channel, High siliceous dope layer is compounded on the inner wall of the gas channel.

The thickness ratio of the siliceous dope layer of height and brick matrix is 1:6~1:8.

The utility model has the advantage of simple in structure, the preferable thermal shock resistance that checker brick itself have not only is remained Can, the siliceous dope layer of height being compounded on gas channel inner wall can also effectively prevent the alkaline matter in high-temp combustion flue dust to Infiltration in brick matrix improves the alkali resistance gas pickling performance of checker brick, substantially prolongs the service life of checker brick, drop The low maintenance cost of coke oven.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model.

Specific implementation mode

Include viscous with nine gas channels 1 as shown in Figure 1, compound porous checker brick described in the utility model Soil property brick matrix 2（Nine 1 equalization settings of gas channel are in brick matrix 2）, it is compounded on the inner wall of gas channel 1 high siliceous Dope layer 3, the thickness ratio of high siliceous dope layer 3 and brick matrix 2 is 1 under normal circumstances:6~1:8, i.e., the thickness of dope layer 3 be 1 ~ 3mm, and the thickness h of brick matrix 2 is 10 ~ 20mm.

Studies have shown that if reducing mullite and Al in checker brick brick matrix₂O₃Content, improve SiO₂Content, then may be used Effectively to alleviate infiltration of the high-temperature fuel gas flue dust neutral and alkali substance into brick matrix, while SiO₂Content is high, additionally it is possible to cigarette Alkaline components in dirt react, and form highly viscous fine and close protection glaze layer on the surface of checker brick, can effectively prevent flue dust Further infiltration, protect checker brick matrix；SiO₂Content is higher, and the viscosity of glaze layer is bigger, and alkali resistance performance is better.

The application has prepared the coating of high silicon content by a certain percentage according to above-mentioned mechanism, is then poured into conventional more In the gas channel 1 of hole checker brick, after standing 1 ~ 2 minute, extra coating is released, it at this moment can shape on 1 inner wall of gas channel At the siliceous dope layer 2 of certain thickness height, be fired at a temperature of 1300 °C ~ 1350 °C after dry compound porous checker brick at Product.

The compound porous checker brick finished product of the utility model is piled up and is used as high-temperature fuel gas in capacity coke oven regenerative chamber Discharge-channel, can make checker brick service life extend 20% ~ 50%, extend the maintenance cycle of coke oven, reduce repair at This.

Claims (2)

1. a kind of compound porous checker brick, including carry a plurality of gas channel（1）Clayey brick matrix（2）, feature exists In：The gas channel（1）Inner wall on be compounded with high siliceous dope layer（3）.

2. compound porous checker brick according to claim 1, it is characterised in that：The siliceous dope layer of height（3）With brick Matrix（2）Thickness ratio be 1:6~1:8.