An inert hot air generator burner and circulating air heater

Abstract

The invention discloses an inertia hot wind generator combustor and a circulating wind heater. The inertia hot wind generator combustor comprises a columnar shell, and a first intake pipe and a center intake pipe arranged in the columnar shell; the outer end of the center intake pipe extends out of the columnar shell to form a center fuel gas intake port; an exhaust end of the center intake pipe comprises a constant-diameter section and a reducing section; one end of the constant-diameter section is connected with a main body of the center intake pipe, and the other end of the constant-diameter section is connected with a large-diameter end of the reducing section; a small-diameter end of the reducing section is sealed; the constant-diameter section and the reducing section are both coaxially arranged with the main body of the center intake pipe; multiple gas distribution holes are uniformly distributed in the constant-diameter section; multiple spraying holes are uniformly distributed in the reducing section; the first intake pipe is positioned on one side of the center intake pipe; the outer end of the first intake pipe extends out of the columnar shell to form a first fuel gas intake port; an exhaust port of the first intake pipe is a bent structure towards the exhaust port of the center intake pipe; the bent structure is a reducing structure; and multiple spraying holes are uniformly distributed at the tail end of the bent structure.

Description

technical field [0001] The invention specifically relates to an inert hot air generator burner and a circulating air heater. Background technique [0002] The crushed coal from the raw coal storage bin is fed into the coal mill, and is ground into powder by rollers on the grinding table, and is dried and transported by the high-temperature inert gas from the circulating air heater. The temperature of the inert gas entering the coal mill is 150-300°C, and the temperature when it exits the coal mill is 100-110°C. After the dry pulverized coal transported by inert gas enters the pulverized coal separation filter for separation, the pulverized coal is sent to the pulverized coal storage tank through the rotary feeding valve and the pulverized coal screw conveyor, and the separated inert gas is partially discharged to the atmosphere. The remaining part enters the inert hot air generator through the circulation fan for circulation heating and drying. The inert hot air generator ...

AI Technical Summary

Problems solved by technology

The original hot air burner has the following disadvantages: the ignition accuracy of the hot air burner is low, and it needs repeated operations to ignite successfully; Raw gas with low value and other fuel gases cannot be utilized, increasing the cost of using fuel gas

Moreover, when the single fuel gas source is cut off, it is easy to cause parking

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