Automatic Ignition and Coking Prevention Furnace for Lignite Processing System

A processing system and automatic ignition technology, applied in the direction of combustion type, combustion method, combustion equipment, etc., can solve the problems of difficult cleaning, large floor space, complex process, etc., and achieve the effect of meeting supporting process requirements and automatic temperature adjustment.

CN105782957BActive Publication Date: 2018-09-21SHENYANG YUANDA TECH IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-09-21

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Abstract

The invention relates to an automatic ignition and anti-coking spraying burning furnace for a brown coal processing system. The automatic ignition and anti-coking spraying burning furnace comprises a furnace body, an overhauling furnace door and a smoke discharging barrel; the automatic ignition and anti-coking spraying burning furnace is characterized in that a natural air inlet is formed in the bottom of a bottom layer of the furnace body, and a fuel blowing-in opening and a fire spraying opening are formed in the positions which are 1.5 m away from the bottom; three layers of air supplementing openings are formed and are formed in the tangential direction of the inner wall; an electric gate valve is installed at the top of the smoke discharging barrel, a hot air pipe is connected to the bottom of the smoke discharging barrel, and an electric gate valve and a temperature measurement sensor are installed at an outlet of the hot air pipe; and a temperature measurement sensor is arranged at the upper portion of the furnace body. By means of the automatic ignition and anti-coking spraying burning furnace, automatic ignition can be achieved, and coking is avoided; and long-time continuous work can be done, automatic temperature adjustment can be achieved, and the mated process requirements of the brown coal processing system can be met.
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Description

technical field

[0001] The invention belongs to coal drying equipment, in particular to an automatic ignition and anti-coking spray burning furnace of a lignite processing system. technical background

[0002] Lignite is currently the main fuel for thermal power plants. Due to the high moisture content of raw coal (over 40%) and varying lump sizes, in order to give full play to the output of the generator, the lignite must be pulverized and dried to reach a particle size of 5 Below 10 mm, with water content below 15%. At present, most of them are first pulverized by a pulverizer and then dried by a dryer, and a drum dryer is usually used for drying. The disadvantages of the prior art are: complex process, large floor space, high cost, and high operating cost. Such as adopting the hot air stove with lignite powder as fuel to supply air for drying can overcome the deficiencies of the above-mentioned technologies, such as fluidized furnace, that is, some ventilation caps are ...

Examples

Embodiment Construction

[0015] See Figure 1-5 , the specific structure is as follows: the furnace body 4 is a cylindrical shape with an outer diameter of 3 meters, which is divided into three layers. It is composed of three cylindrical parts assembled from top to bottom, connected by flanges, and its height is 2 meters from bottom to top. , 1.5 meters, 1.5 meters. The exterior is welded with steel plates, and the inner lining is refractory bricks. A tamped insulation material layer is set between the refractory bricks and the outer steel plate; the furnace base is an octagonal shape welded by channel steel, and there are eight natural air inlets at the bottom of the bottom of the furnace body 4 4-1 , under the action of an external induced draft fan (not shown in the figure), the combustion-supporting air can be sucked in; there is a fuel blowing port 2 at a distance of 1.5 meters from the bottom, and the fuel blowing port at the outer end of the furnace is connected to the fuel pipe and the fuel fa...