neue Punkte, auf die bei der Auswahl eines Tunnelofens geachtet werden sollte

1. Wählen Sie ausgereifte technische Lösungen, um sicherzustellen, dass die Produktionslinie den Standard erreicht und die Produktionskapazität erreicht.

Bei Verwendung eines Tunnelofens zum Brennen von Ziegeln, Verschiedene in der Produktion verwendete Parameter sollten entsprechend den grundlegenden Eigenschaften der Rohstoffe bestimmt werden.

The firing output of the kiln is that the performance indicators of the fired product meet the requirements of the national standard, not just how much is fired, and the output of the kiln is how much. Some kiln-fired products are only 3mm~4mm on the surface, but the inside is not completely fired. Solche Produkte, die die Anforderungen der nationalen Norm nicht erfüllen, können nicht als Berechnungsgrundlage für die Leistung des Tunnelofens herangezogen werden.

Die Länge, Breite und Höhe des Ofens richten sich nach der Leistung des Ofens. Bei der Berechnung der Länge, Breite und Höhe des Ofens, die Aufheiz- und Abkühlraten der Rohstoffe, die Brenndauer der Rohstoffe, die höchste Brenntemperatur und der Brenntemperaturbereich sind zu beachten. Und andere Faktoren.

2. Angemessenes Layout des Tunnelofensystems, um das Brennen stabil zu machen.

Gemäß der Definition von Tunnelofen, tunnel kiln should be equipped with ventilation system, fuel combustion system, vehicle entry system, and sealing system. These subsystems constitute the working system of tunnel kiln. The close cooperation of each system can make the tunnel kiln work normally.

According to the requirements of the firing atmosphere in the kiln, the number and position of the fans used on the kiln are equipped, the air pressure of the fans is determined according to the shape of the fired products and the density of the kiln, und das Ventilationsvolumen der Ventilatoren wird entsprechend der Leistung bestimmt.

Je nachdem welcher Brennstoff verwendet wird, die Methode des Kraftstoffverbrennungssystems, welche Art von Verbrennungsanlage verwendet werden soll, und die Anordnungsposition und -menge der Verbrennungsausrüstung sollte die Temperatur im Brennofen so gleichmäßig wie möglich machen. Die Hauptinhalte des Eingabesystems sind der Eingabemodus und das Eingabezeitintervall.

Das Dichtungssystem umfasst die Abdichtung zwischen Ofenwagen und Ofenkörper, die Abdichtung zwischen Ofentür und Ofenkörper, die Abdichtung zwischen Rohrleitung und Ofenkörper, und die Abdichtung zwischen den Ofenwagen. Es ist isoliert, um einen guten Brennraum innerhalb des Tunnelofens zu bilden, damit das Halbzeug im Ofen zum fertigen Produkt gebrannt werden kann.

3. Recognize the importance of kiln car and ensure the stable quality of fired products.

The kiln car is an indispensable equipment in the production process of the tunnel kiln, and it is also the key equipment related to the performance of the tunnel kiln and whether it can be used normally.

In order to make the kiln car play the role of key equipment, the first thing is to maintain a good seal between the kiln car and the tunnel kiln body, so as to completely isolate the inside of the kiln from the outside of the kiln, so that the cold air outside the kiln cannot enter at will In the kiln, the hot air in the kiln will not leak into the kiln, so that the firing process in the kiln can be carried out smoothly.

Zweitens, the seal between the kiln cars should also be reliable, the reason is as mentioned above. Third, the operation of the kiln car should be stable, so as to avoid the occurrence of such phenomena as kiln collapse, uneven firing, and difficulty in entering the car. Fourth, the thermal insulation layer on the kiln car is very important. If the thermal insulation layer of the kiln car has a good thermal insulation effect, the temperature in the kiln will be consistent, the quality of the fired products will be uniform, and the color will be the same. If the thermal insulation effect of the kiln car is not good, Dann, the temperature difference between the upper and lower sides of the kiln will be large, and the fired products will be cooked on the top and cooked on the bottom, or cooked on the top and under the coke. In short, the product quality is uneven and the color difference is large.

Some factories have been in operation for less than a year, and the kiln car often has problems and needs to be replaced, which not only increases production costs, but also changes the understanding of tunnel kilns, and feels that tunnel kilns are inferior to other kilns. In der Tat, the root cause is the insulation layer of the kiln car, and the seemingly simple insulation layer problem has not been properly handled.

Some kiln cars did not reduce the thickness and material of the thermal insulation layer, but the thermal insulation effect was still very poor. Why is the temperature under some tunnel kiln cars only 40℃~50℃, people can check it smoothly under the car, while the temperature under some cars is so high that people can’t get into the car at all. In der Tat, the reason is very simple, it is caused by the gap in the insulation layer of the kiln car.

1. Construction materials must be guaranteed.

In the design process of the kiln, the material properties and usage requirements of various materials are considered, and the usage position and thickness of the materials are calculated. In order to ensure the construction quality, the use position and amount of materials shall not be arbitrarily changed during the construction process, nor the variety and quality grade of the materials used.

If it is to be replaced, the strength grade of the structural material must be higher than that of the original design material, and the thermal conductivity of the insulation material to be replaced must be lower than that of the original material.

2. Construction according to design requirements.

In the process of using the tunnel kiln, the technical requirements that should be met in the construction process, the construction difficulty and the solutions are fully considered. Many norms and standards are used in the design, including national standards and norms, provincial and ministerial-level standards and norms, local-level standards and norms, and industry standards and norms.

In the construction requirements, specific requirements are put forward for each part. These requirements are in line with the requirements of the construction specifications and standards. If you want to change them, you must refer to the corresponding items of the specifications and standards, and make changes according to the requirements of the specifications and standards. Change.

Problems and lessons in tunnel kiln construction

As we all know, there are three principles to produce good fired bricks: Rohstoffe sind die Grundlage, kiln equipment is the key, and management is the foundation. If it is not designed, the materials used are inferior, and the construction is arbitrarily commissioned, the kiln will become the biggest obstacle to the sustainable development of the production enterprise. There are the following fatal problems in the reconstruction and new construction of tunnel kilns, which should be paid great attention by colleagues in the whole industry:

1. The furnace design is unreasonable

Some enterprises do not pay attention to the process design of sintering kilns. There are generally simple kiln structures, unscientific drying kiln structures, and unreasonable air duct design, so that various tunnel kilns of different lengths appear in front of us. In order to meet the owner’s blind request to reduce the cost, many tunnel kilns are overweight and weak.

2. Most construction teams are unqualified, and the construction quality is worrying

Es ist derzeit eines der prominentesten Probleme, den Bau von Anlagen ohne Ofenbauqualifikation willkürlich zu beauftragen. Ihnen fehlt die notwendige Berufsausbildung und Qualifikationsbescheinigung des Baupersonals.