A kind of hybrid heating equipment and its application

Abstract

Disclosed are heating equipment, in particular hybrid heating equipment, and an application thereof. The equipment comprises a three-layer cylinder structure consisting of an outer cylinder (1), a heating cylinder (4) and a slag return cylinder (5) from outside to inside sequentially. The outer cylinder (1) is supported by a supporting device (12), and is driven to rotate by a transmission device (11). A first supporting member (3) is arranged between an inner wall of the outer cylinder (1) and an outer wall of the heating cylinder (4). A second supporting member (6) is arranged between an inner wall of the heating cylinder (4) and an outer wall of the slag return cylinder (5). An air inlet cover (17) and an air outlet cover (7) are respectively arranged at two ends of the outer cylinder (1). The air inlet cover (17) is connected to a heating furnace (13) via a flange. The flange on the heating furnace (13) is connected to a burner (18). One end of the heating cylinder (4) is connected to a feeding airlock device (8). The other end of the heating cylinder (4) is connected to a discharge airlock device (15).

Description

technical field [0001] The invention relates to a heating device, especially a hybrid heating device and its application. Background technique [0002] Semi-coke, also known as semi-coke and coke powder, is fired from the high-quality Jurassic clean coal abundant in Shenfu, Yulin and Dongsheng coal fields. The structure is blocky, the particle size is generally above 3mm, and the color is light black. , which has the characteristics of high fixed carbon, high specific resistance, high chemical activity, low ash content, low aluminum, low sulfur, and low phosphorus. It can replace metallurgical coke, smokeless block and charcoal and is widely used in calcium carbide, metal silicon, In the production of ferroalloy, ferrosilicon, ferrochrome, silicomanganese, silicon carbide, fertilizer and so on. [0003] At present, the heating equipment used in my country's existing semi-coke mainly includes internal heating type vertical furnace, external heating type rotary furnace, fluid...

AI Technical Summary

Problems solved by technology

[0005] ① Raw material problem: At present, the general-purpose semi-coke furnace uses 30 to 80 mm lump coal. In actual coal mine production, such lump coal is only 30% to 40%, and it will face the problem of raw material supply;

[0006] ② Gas quality problem: Due to technological reasons, gas has low calorific value, low hydrogen and methane content, and high nitrogen content, which cannot meet the best conditions for chemical utilization and can only be used as fuel;

[0007] ③ The recovery rate of tar is low, it can only reach 6% now

[0009] ① The heat is completely transferred to the material through the cylinder wall, and the thermal efficiency is low;

[0010] ② The internal temperature of the cylinder is as high as 500 to 600 degrees, and the transmission device and supporting parts are all in direct contact with the heating cylinder, resulting in large thermal deformation, and the parts are easily damaged; and the heat radiation is also large, and the requirements for transmission and supporting parts are also high;

[0011] ③ The cylinder is completely exposed to the outside world and cannot be used for heat preservation, resulting in large heat loss;

[0012] ④The screw feeder is used to feed the material. After the material enters, the temperature rises slowly, and the feeding end is easy to coke and block.

[0013] The fluidized bed pyrolysis process is still in the experimental stage, and there is no precedent for successful large-scale industrial application

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