Single-channel combustor for decomposition furnace

Abstract

The invention discloses a single-channel combustor for a decomposition furnace. The single-channel combustor comprises an outer pipe, a fuel inlet connection pipe and a throat tube, wherein the outer pipe, the throat tube and the fuel inlet connection pipe are sequentially connected, and then penetrating flue pipes are arranged in the outer pipe, the throat tube and the fuel inlet connection pipe; the fuel pipe in the throat pipe has a gradient section; a cone body is also arranged in the fuel pipe and is arranged in the fuel pipe in a sliding manner; the cone body also has a gradient section at the position close to the gradient section of the throat pipe and the inclination directions of the outer wall surface of the cone body and the inner wall surface of the throat pipe are consistent; and an adjusting device is directly or indirectly connected with the cone body and drives the cone body to slide. The single-channel combustor for the decomposition furnace is unique in structural design, is matched with flexible and fast adjusting means, can meet various requirements of the use conditions of the decomposition furnace of a predecomposition kiln, is beneficial to establishing of a reasonable temperature system, and can increase the utilization rate of the fuel and realize the targets of saving energy, reducing consumption and reducing emission.

Description

technical field [0001] The invention belongs to thermal equipment, and is a special single-channel burner for a decomposition furnace of a precalcining kiln. Background technique [0002] my country is a big cement country. Since the reform and opening up, benefiting from the rapid economic growth, the cement production capacity has quickly jumped to the first place in the world, and the technology and equipment manufacturing level has leapt to the world's first-class. However, the long-term extensive development has also brought about the chronic problem of structural overcapacity, and the contradiction between supply and demand has become more prominent. In my country, the concentration of the cement industry is relatively low, the scale of enterprises is relatively small, severe overcapacity in some areas, excessive competition in the market, low technological content, high energy consumption and other factors lead to low profit levels of the entire cement industry; The s...

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Problems solved by technology

[0005] In addition, the nitrogen oxides NOx produced by the new dry process cement clinker production line is the second largest pollution source after thermal power generation. The domestic out-of-stock is basically sprayed with ammonia water and urea solution, and the secondary pollution caused by ammonia escape is serious!

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