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Pulverized coal injection delivery system for lime kiln

A technology of conveying system and pulverized coal injection, which is applied in the field of lime kiln supporting equipment and lime kiln pulverized coal injection conveying system. capacity, reduce power consumption, and optimize the delivery process

Active Publication Date: 2016-05-11
SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inertness of nitrogen, it will dilute the oxygen in the furnace after it enters the furnace, which will affect the complete combustion of pulverized coal and reduce the heat production efficiency of the furnace

Method used

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  • Pulverized coal injection delivery system for lime kiln
  • Pulverized coal injection delivery system for lime kiln
  • Pulverized coal injection delivery system for lime kiln

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The lime kiln pulverized coal injection conveying system of the present invention is as figure 1 As shown, it includes a pulverized coal bin 2, a tundish 5, an injection tank 9, a fan and 4 pulverized coal distributors 11, and the fan is a Roots blower. The pulverized coal bin is connected to the intermediate tank through the gate valve 3, and the intermediate tank is connected to the injection tank 9 through the feed valve 6. The bottom of the spray tank is provided with a pulverized coal discharge port 10, which is connected to the pulverized coal distributor 11 through a feed valve 27 and a pulverized coal delivery pipe 15, and the fan is connected to the pulverized coal delivery pipeline. The system is equipped with a powder return pipeline 1, a balance pipeline 4 and an upper balance pipeline 8. The pulverized coal delivery pipe is connected to the pulverized coal bin through the powder return pipeline, the injection tank is connected to the intermediate tank throu...

Embodiment 2

[0022] Another embodiment of the present invention is as Image 6 As shown, the injection conveying system and the sleeve kiln 31 are included. The injection conveying system includes a pulverized coal bin 2, a tundish 5, an injection tank 9, a fan and 4 pulverized coal distributors 11, and the sleeve kiln is equipped with a combustion Chamber 32, the combustion chamber is provided with sleeve kiln pulverized coal burner 33. Figure 7 As shown, the pulverized coal burner of the sleeve kiln is provided with a pulverized coal inlet 34, an air inlet 35 and a burner port 36, and the distribution branch pipe 13 is connected to the pulverized coal inlet of the pulverized coal burner of the sleeve kiln. Other structures and operations of this embodiment are the same as those of Embodiment 1.

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Abstract

The invention relates to a pulverized coal injection delivery system for lime kiln. The system includes a pulverized coal cabin, a blower fan and a pulverized coal distributor. The system is provided with an intermediate tank and an injection tank; the pulverized coal bin is connected with an intermediate tank through a gate valve; the intermediate tank is connected to an injection tank through a feed valve; the lower portion of the injection tank is provided with a pulverized coal discharge port; the pulverized coal discharge port is connected to a pulverized coal dispenser through a feed valve and a pulverized coal delivery pipe; the blower fan is connected with the pulverized coal delivery pipe; the pulverized powder delivery pipe is connected with the pulverized coal cabin through a powder return pipe; the injection tank is connected to an intermediate tank through a balance pipe; and the intermediate tank is connected to the pulverized coal cabin through an upper balance pipe. The system uses the compressed air blown by the blower fan as power for convey, improves the pulverized coal injection convey capacity and combustion efficiency of pulverized coal, optimizes the delivery process and reduces power consumption. The pulverized coal injection delivery system for lime kiln has the advantages of high transmission capacity, complete sealing, no dust, cleaness and green.

Description

technical field [0001] The invention belongs to the technical field of chemical production equipment, and relates to a lime kiln supporting equipment, in particular to a lime kiln pulverized coal injection conveying system. Background technique [0002] Calcination equipment such as lime kilns using solid fuels require coal powder preparation and delivery systems to transport the coal powder to the burners for combustion. The pulverized coal preparation and conveying system usually includes raw coal bins, pulverizers, pulverized coal bins and pulverized coal conveyors, etc. Coal is ground into pulverized coal in the pulverizer, and the pulverized coal is stored in the pulverized coal bin , using the high-pressure airflow generated by the Roots blower as a carrier to blow out the pulverized coal in the pulverized coal bin, and guide it to the burner for combustion through the pipeline. [0003] Due to the extremely fine particle size of pulverized coal, it is easy to explode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10
CPCC04B2/104
Inventor 贾会平
Owner SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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