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Method and device for sintering lime

A calcination device and lime technology, applied in lime production, etc., can solve the problems of low thermal efficiency of the lime kiln system, reduce thermal efficiency and product quality of the lime kiln system, affect productivity, etc., achieve large-scale continuous production, save energy, and improve operations rate effect

Active Publication Date: 2009-12-09
SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a process has the following defects. If higher productivity is required, the thermal efficiency and product quality of the entire lime kiln system may be reduced, and if the product quality is to meet higher requirements, the productivity will be affected, and the lime kiln system will also be affected. Thermal efficiency is at a low level

Method used

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  • Method and device for sintering lime
  • Method and device for sintering lime
  • Method and device for sintering lime

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Examples of the invention are figure 1 , figure 2 , The kiln body is arranged in a ring shape. For the sake of simplicity, the figure 2 shown in the description. This system is mainly composed of feeding device 1, kiln body I, II, III, IV, V, VI, combustion chamber 4, unloading device 44, discharge channel 31, flue gas pipeline 33, waste gas pipeline 34, air pipeline 32, common pipeline 35 etc. are formed. A suction beam 2 is arranged in the kiln body, and the calcining device is an intake beam 3, and its quantity is determined according to the size, height and production load of the lime burning kiln, such as Figure 8 shown. The valve 36 in the common pipeline 35 is normally closed, and the valve 37 is normally open. Only when a certain kiln body is overhauled or the calcination sequence of the kiln is adjusted, the corresponding valve 37 is opened and the valve 36 is closed.

[0024] The lower part of the kiln body is equipped with intake beams 3, or installe...

Embodiment 2

[0028] Examples of the invention are image 3 As shown, the kiln body is arranged in a matrix kiln body. The high-temperature flue gas generated by this system selectively opens the valve to pass through according to the needs of the entire process, that is, when one or more kiln bodies are calcined, one or more kiln bodies are preheating, and one or more kiln bodies are While cooling, one or more kiln bodies are discharging finished ash and loading limestone.

[0029] The other processes and process conditions of this embodiment are the same as those of Embodiment 1.

Embodiment 3

[0031] Examples of the invention are Figure 9 As shown, the calcining device is a combustion beam 45 (such as Figure 10 As shown), the combustion beam is provided with a burner 48, and the system has a fuel pipeline 47. The working principle of this system is: fuel enters the fuel pipeline of the combustion beam 45 through the fuel pipeline 47, and the combustion-supporting air enters the air pipeline of the combustion beam from the air pipeline 32, and the calcined limestone is mixed and burned at the burner. The high-temperature flue gas after calcining limestone goes out from the suction beam and enters another limestone kiln waiting for preheating to preheat the limestone in the kiln. The cooling air enters the kiln body from the combustion beam burner to cool the calcined lime, and the preheated air after cooling the lime product can be used as a combustion-supporting gas, and enters the combustion beam through the common pipeline 35 for combustion.

[0032] The kiln ...

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Abstract

The invention relates to a method and a device for sintering lime. The device comprises a plurality of kilns which are distributed in a ring or matrix or other shapes. Solid fuel such as coal powder, and the like, or gas fuel or liquid fuel, or mixed fuels of solid, gas and liquid combusts in the kilns or a separately arranged combustion chamber, and generated high-temperature smoke sinters limestone in the kilns and preheats the limestone in other kilns. Each kiln is internally provided with an air inlet girder and an up-sucking girder. The top of each kiln is provided with a movable feeding device capable of feeding for each kiln in a system. The bottom of each kiln is provided with a movable discharging device connected with a discharging channel and gathering dust generated by each kiln. By using the method and the device for sintering lime, the limestone can be sintered more sufficiently and evenly and has good quality and high activity degree; and meanwhile, the invention can sufficiently utilize afterheat, save the energy source, improve the thermal efficiency of the system, lower the production cost and realize large-scale continuous production.

Description

technical field [0001] The invention relates to a method and device for calcining materials, in particular to a method and device for burning lime. Background technique [0002] Lime and lightly burned dolomite are important building materials, as well as important raw materials in the fields of metallurgy and chemical industry. In the prior art, limestone and dolomite are used as raw materials, and various fuels are applied to lime kilns to produce lime with existing heating methods in many forms. Such a process has the following defects. If higher productivity is required, the thermal efficiency and product quality of the entire lime kiln system may be reduced, and if the product quality is to meet higher requirements, the productivity will be affected, and the lime kiln system will also be affected. Thermal efficiency is at a low level. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, use waste heat, improve quality, increase ...

Claims

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Application Information

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IPC IPC(8): C04B2/10
CPCY02P40/40
Inventor 贾会平
Owner SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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