Heat accumulating type lime rotary kiln

A technology of lime rotary kiln and regenerative type, which is applied in the field of regenerative lime rotary kiln and rotary kiln, which can solve the problems of limited energy recovery of preheating tubes and unfavorable production capacity, so as to achieve continuity and stability and expand production Abilities, effects that increase selectivity

Inactive Publication Date: 2015-07-29
SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this patent, the preheating tube recovers limited energy by preheating raw materials, and there is still sufficient room for energy saving. In addition, the rotary kiln in this patent is a single rotary kiln, which is not conducive to expanding production capacity.

Method used

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  • Heat accumulating type lime rotary kiln
  • Heat accumulating type lime rotary kiln
  • Heat accumulating type lime rotary kiln

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Regenerative lime rotary kiln of the present invention, such as figure 1 As shown, it includes two rotary kilns 13, cooler 16, two regenerators 4, feeding system 3, discharging system 18, blower 11, cooling fan 17, waste heat power generation equipment 10 and exhaust gas discharge system. The two rotary kilns are symmetrically arranged left and right, and are located on both sides of the kiln tail cover respectively. The rotary kiln is provided with a kiln head 22, and the two rotary kilns are connected to the cooler through the kiln tail cover 14, the cooler 16 is connected to the discharge system, and the cooling fan is connected to the cooler. The feed port on the upper part of the regenerator 4 is connected with the feeding system 3 through the feed valve 2 . The two heat accumulators 4 are sleeve-type structures, such as image 3 As shown, the heat accumulator 4 includes an outer cylinder and an inner cylinder 20, the upper part of the inner cylinder is a conical...

Embodiment 2

[0019] Another embodiment of the present invention is as figure 2 and Figure 4 As shown, the regenerative lime rotary kiln includes two rotary kilns 13 and one heat accumulator 4, the heat accumulator 4 is provided with a partition 19, and the partition divides the heat accumulator 4 into two parts with the same structure. One end of the two rotary kilns 13 is connected to the cooler 16 through the kiln tail cover 14 , and the other end is connected to the heat accumulator 4 . The two rotary kilns 13 alternately carry out calcination and preheating, and the material spaces on both sides of the regenerator partition 19 alternately store heat and release heat to preheat the air, which is realized by the action of the three-way valve 1, valve 9 and feed valve 3. Alternate operation, the set temperature of flue gas discharge is 160°C. Other equipment and connection status are the same as in Embodiment 1. The advantage of this embodiment is that the device is compact and saves...

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Abstract

The invention relates to a heat accumulating type lime rotary kiln which comprises two rotary kiln bodies, a cooler, one or two heat accumulators, one or two blowers, a cooling fan and a flue gas exhaust system, wherein the two rotary kiln bodies are connected with the cooler through a kiln tail hood, and an air port in the upper part of each heat accumulator is connected with the corresponding blower and the flue gas exhaust system respectively through a three-way valve; each heat accumulator adopts a telescoping structure, an inner barrel and an outer barrel are concentrically arranged, annular space is formed between the inner barrel and the outer barrel, and the lower part of the annular space is connected with the corresponding rotary kiln body through corresponding kiln head; the lime rotary kiln further comprises burners and an auxiliary burner, the burners are mounted on the kiln heads, and the auxiliary burner is mounted on the kiln tail hood. The heat accumulators of the heat accumulating type lime rotary kiln adopt the telescoping parallel flow structure, the heat transfer effect is good, and processed materials can be pre-heated uniformly; the two rotary kiln bodies are connected with the heat accumulators through the kiln tail hood to realize preheating of calcined raw materials and combustion air, continuity and stability of lime production are facilitated, and the production capacity is improved.

Description

technical field [0001] The invention belongs to the technical field of industrial furnaces and kilns, and relates to a rotary kiln, in particular to a regenerative lime rotary kiln. Background technique [0002] Rotary kiln refers to rotary calcining kiln, among which lime rotary kiln is widely used for calcining small particle materials, suitable for steel, calcium carbide chemical, non-ferrous metal and other production enterprises. Lime rotary kiln can directly calcine 10-40mm fine-grained raw limestone or lightly burned dolomite, which has the characteristics of good raw material adaptability, large output, uniform product, high activity and stable production operation. The lime rotary kiln has simple structure, smooth air flow, sulfur-containing flue gas can be discharged in time, and the sulfur in the fuel is not easy to adhere, so the calcined product has low sulfur content and high purity, which meets the quality requirements of the finished product; at the same time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10
CPCC04B2/10F27B7/02Y02P40/40
Inventor 贾会平
Owner SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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