Offline molten steel ladle baking device

1、 Precautions for selection of coke oven gas baking device:

What are the components of coke oven gas?

Coke oven gas, also known as coke oven gas, English name: Coke Oven Gas (COG), belongs to medium calorific value gas, raw gas or raw gas. It refers to a combustible gas produced by preparing several types of bituminous coal into coking coal, which is subjected to high-temperature dry distillation in the coking furnace, while producing coke and tar products. It is a byproduct of the coking industry. Generally, each ton of dry coal can produce coke oven gas: 300-350m3 (standard state).

Coke oven gas consists of hydrogen (55% - 60%) and methane (23% - 27%), as well as a small amount of carbon monoxide (5% - 8%), C2 and unsaturated hydrocarbon (2% - 4%), carbon dioxide (1.5% - 3%), oxygen (0.3% - 0.8%) and nitrogen (3% - 7%). Hydrogen, methane, carbon monoxide, C2 and unsaturated hydrocarbon are combustible components, while carbon dioxide, nitrogen and oxygen are non combustible components.

2、 The Zhongwei coke oven gas burner is the core component of the coke oven gas baking device, with the following characteristics:

1. The solar term. The coke oven gas burner adopts a stable flame disc structure, with uniform gas/air mixing and sufficient combustion. The solar term effect is better than other similar burners on the market by more than 20%, and energy-saving is an advantage.

2. Baking machine control cabinet: With automatic ignition and flameout protection functions, automatic temperature control function is designed based on the steel ladle baking process curve, ensuring uniform pouring and baking temperature, and small temperature difference.

3. Material of combustion pipe for coke oven gas burner; Stainless steel 310s or silicon carbide, capable of withstanding high temperatures ranging from 1100 to 1300 ℃, with a lifespan of over 5 years. The cover adopts an energy-saving fiber cotton or pouring material structure, and is attached to the outer edge of the pouring ladle to reduce heat loss inside the ladle.

Scope of application of coke oven gas baking device: used for on line (off line) baking of steel (iron) ladle and continuous casting tundish, including fast or slow baking of newly built ladle drying and turnover ladle. Fast baking of online steel ladle or tundish.

3、 The technical parameters of the coke oven gas toaster designed by Zhengzhou Zhongwei Environmental Protection Equipment Co., Ltd.:

1. Offline steel (iron) ladle baking is used to dry newly built bales, and to quickly or slowly bake turnover bales. When using coke oven gas, the heating temperature is around 1100 ± 50 ℃, the heating rate is 40 ℃/min, and the temperature difference inside the ladle (intermediate ladle) is about 30 ℃. The cold ladle is baked offline for about 2.5 hours, and the ladle lining temperature can reach over 1000 ℃.

2. When using coke oven gas to quickly bake the online steel ladle (tundish), it can be heated to above 1100 ℃, with a heating rate of ≥ 40 ℃/min, and a temperature difference of about 30 ℃. Usually, the target temperature can be reached by baking the lining for 10-20 minutes. There is a special introduction on the functional characteristics of the regenerative baking device. For more information, please call (WeChat synchronization): 15713691937.

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