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Construction Acceptance Criteria For Refractory Bricks For Coke Oven Inclined Flue
Jan 14, 2019

The furnace structure consists of a furnace roof, a combustion chamber, a carbonization chamber, a diagonal flue, a regenerator and a small flue. Among them, the internal structure of the coke oven oblique flue is complicated, especially pay attention to during the construction acceptance process. The acceptance criteria are as follows:



First, the main control project


1. The varieties and grades of refractory materials should meet the design requirements.


Inspection method: observation inspection, inspection inspection report or quality certificate.


2, full of mud cracks between the blocks should be consistent with the provisions of article 9.3.2 of "GB 50309-2017 acceptance of industrial furnaces building quality standards."


3. There must be no reverse tooth on the bottom surface of the carbonization chamber.


Inspection method: observation inspection.


 


Second, the general project


1. The allowable deviation and inspection method of the oblique chimney masonry shall comply with the requirements of Table 1.


Table 1 Permissible deviation and test method for oblique chimney masonry


 


2. When the design stipulates that the thickness of the brick joint is 5mm, the minimum brick joint thickness should not be less than 3mm.


Number of inspections: 1 hole (room) for each sub-project.


3, expansion joints and sliding joints shall comply with the provisions of Article 9.3.5 of the "GB 50309-2017 acceptance of industrial furnaces building quality standards."


4. The inner surface of the inclined flue hole should be flat and the hole should be clean.


Number of inspections: 1 hole (room) for each sub-project.


Inspection method: observation inspection, inspection construction record.


5. The surface of the inclined flue burner and the surface of the wall should be densely packed with no seams.


Number of inspections: 1 hole (room) for each sub-project.


Inspection method: observation inspection, feeler gauge inspection.


6, gas path should comply with the provisions of Article 9.3.7 of the "GB 50309-2017 acceptance of industrial furnaces building quality standards."


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