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Series connection industrial kiln

An industrial kiln and kiln technology, applied in the field of heating equipment, can solve the problems of high cost, ring formation, high stop and accident rate, large power consumption, etc., and achieve the effect of reducing production cost and saving equipment investment

Active Publication Date: 2014-08-27
赵树壮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main features of batch kiln are single kiln, intermittent operation, simple equipment, low accident rate and flexible process, suitable for multi-variety production. low energy consumption
The continuous kiln is characterized by stable process, high production capacity, sufficient heat exchange between gas and material in reverse operation, and is suitable for mass industrial production; its disadvantages are complex structure, many auxiliary equipment, stuck, hanging, looping, stoppage and accident rate High, large investment, high maintenance costs, difficult operation, large power consumption, large heat dissipation area, high air leakage rate, high total energy consumption and poor process flexibility
[0003] The above two types of kilns adopt solid wall structure, use more materials, have large heat storage, fast heat dissipation, easy to burn out, and short service life of equipment
Most of the combustion-supporting fans, air ducts, burners, and heat exchangers used in furnaces are metal structures, and the degree of high temperature resistance is limited. High-temperature combustion-supporting air cannot be used directly, which affects the full use of waste heat. It is not suitable for rapid combustion and high-temperature processes.
Most furnaces are heated by multiple burners, and it is difficult to strictly match the air-to-fuel ratio of multiple burners. The high temperature around the burners affects the uniform distribution of the overall temperature of the furnace, reducing the service life of the kiln roof, walls and the entire furnace
The shell is mostly made of iron sheet steel structure, which has fast heat dissipation and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The present invention connects industrial kiln, as figure 1 As shown, it includes a separate furnace kiln 15, an air inlet 5, a lower fire hole 8, a branch flue 9, a flue 10, an upper gas passage 3, a lower gas passage 4, a fuel pipeline 1 and an exhaust gas discharge pipeline 13. The separate kiln is provided with a furnace 6 and a combustion chamber 2, and the combustion chamber is located at the end wall of the furnace. The kiln roof, kiln wall and kiln bottom of the individual furnace kiln are hollow structures, and the kiln roof, kiln wall and kiln bottom of the hollow structure are provided with a preheating air passage 7 . The furnace is communicated with the branch flue through the lower fire hole, the branch flue is connected with the lower gas passage through the flue, and the lower gas passage 4 is connected with the combustion chamber 2 . Such as Figure 5 As shown, eight separate kilns 15 are connected in series in a chain arrangement, and the flue 10...

Embodiment 2

[0026] Another embodiment of the present invention is as figure 2 As shown, it is a split series connection structure. Two separate kilns 15 are separated by a certain distance, connected by upper gas passage 3 and lower gas passage 4, and the upper and lower gas passages are provided with valves. Other structures and operations of this embodiment are the same as those of Embodiment 1.

Embodiment 3

[0028] The third embodiment of the present invention is as image 3 Shown, the kiln bottom of independent furnace kiln is trolley structure, and trolley 14 is provided with fire hole 8, branch flue 9, flue 10 and wheel. The furnace is connected with the lower gas channel 4 through the lower fire hole of the trolley, the branch flue 9 and the flue 10 . Put the material to be heated on the trolley, push it into the furnace, and adjust the position so that the flue 10 of the trolley communicates with the lower gas passage 4. During operation, the high-temperature flue gas enters the combustion chamber 2 of the next independent kiln through the lower fire hole 8 on the trolley, the branch flue 9, the flue 10 and the lower gas passage 4. Other structures and operations of this embodiment are the same as those of Embodiment 1.

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PUM

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Abstract

The invention relates to a series connection industrial kiln, which comprises single kilns, a water inlet, a flue, an upper gas passage, a lower gas passage, a fuel pipeline and a waste gas discharge pipeline, wherein the kiln top, the kiln wall and the kiln bottom of each single kiln in the hollow structure form a preheat air passage. At least two single kilns are serially connected, and the connection mode is as follows that the flue of the former single kiln is connected with a combustion chamber of the later single kiln through the lower gas passage, a hearth of the former single kiln is connected with the combustion chamber of the later single kiln through the upper gas passage, or the former single kiln is connected with the combustion chamber of the later single kiln simultaneously through the lower gas passage and the upper gas passage. The series connection industrial kiln has the advantages that a blower and an external burning nozzle are not needed, combustion-supporting air enters the combustion chamber through the lower gas passage, the upper gas passage and the preheat air passage, the energy is saved, in addition, the high-temperature limitation is avoided, and high-temperature air is used. The series connection industrial kiln belongs to a kiln between a batch type kiln and a continuous kiln.

Description

technical field [0001] The invention belongs to the technical field of heating equipment, and relates to an industrial furnace, in particular to a serial industrial furnace between a batch furnace and a continuous furnace. Background technique [0002] Industrial furnaces are large-scale heating or calcination equipment in metallurgy, machinery, chemical industry, and building materials industries. They are divided into two categories according to their operation methods; Furnaces, pit furnaces, reverberatory furnaces, pool furnaces and crucible furnaces. The other type is continuous kiln, mainly including tunnel kiln, rotary kiln, shaft kiln and wheel kiln. Both types of furnaces have advantages and disadvantages. The main features of batch kiln are single kiln, intermittent operation, simple equipment, low accident rate and flexible process, suitable for multi-variety production. Low, high energy consumption. The continuous kiln is characterized by stable proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B17/00F27B19/00F27D1/00F27D17/00
Inventor 赵树壮赵磊赵天赐
Owner 赵树壮