Semi-heat accumulating type rotating bed equipment and process for producing large-size high-activity lime

A rotating bed and heat storage technology, applied in lighting and heating equipment, lime production, furnace types, etc., can solve the problems of high energy consumption of comprehensive finished products, large fluctuations in lime activity, and low utilization rate of ore resources, so as to prevent burnt effect

Inactive Publication Date: 2011-09-14
周生献
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the existing technology, the present invention proposes a semi-regenerative production of large-size high-activity lime rotary bed equipment and process, which solves the problem of low utilization rate of ore resources and difficult control of raw or over-burning in lime production. , Large fluctuations in lime activity, low production efficiency...

Method used

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  • Semi-heat accumulating type rotating bed equipment and process for producing large-size high-activity lime
  • Semi-heat accumulating type rotating bed equipment and process for producing large-size high-activity lime

Examples

Experimental program
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Embodiment 1

[0043] A semi-regenerative rotary bed equipment, including rotary bed, preheating system, cooling system, dust removal system and finished product delivery system; It is connected to the rotary bed; the dust removal system is connected to the preheating system through the flue gas pipe 24; the cooling system is located below the discharge side of the rotary bed, and is connected to the cooling system through the discharge machine 17 and the discharge chute 16; the cooling system is connected to the cooling system through the finished product chute 13 is connected with the finished product conveying system.

[0044] The rotary bed includes a distribution area 1, a heating area 5, a high temperature area 7, a soaking area 8 and a discharge area 9, and the distribution area 1, the heating area 5, the high temperature area 7, the soaking area 8 and the discharge area 9 are sequentially head to tail Connected; the vibrating screen 3 and the distributor 2 are installed above the dis...

Embodiment 2

[0053] A kind of semi-regenerative rotary bed equipment of the present invention, see figure 1 , including rotary bed, preheating system, cooling system, dust removal system and finished product conveying system; the preheating system is located above the cloth side of the rotary bed, and is connected to the rotary bed through the distributor 2 and the vibrating screen 3; the dust removal system passes through the smoke The air pipeline 24 is connected to the preheating system; the cooling system is located below the discharge side of the rotary bed, and is connected to the discharge chute 16 through the discharge machine 17; the finished product delivery system is connected to the cooling system through the finished product chute 13.

[0054] The rotary bed includes a distribution area 1, a heating area 5, a high temperature area 7, a soaking area 8, and a discharge area 9; The vibrating screen 3 and the distributor 2 are installed above the distribution area 1, the distribut...

Embodiment 3

[0068] In the semi-regenerative rotary bed equipment of the present invention, the preheater 21 adopts a chain grate type preheater, and the discharger 17 adopts a water-cooled screw discharger. The fuel is blast furnace gas. Others are the same as embodiment 1.

[0069] The activity of the lime product is 395-399ml, the powder rate is 3.0%, and the raw and burnt is 0.2%.

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Abstract

The invention relates to semi-heat accumulating type rotating bed equipment and a process for producing large-size high-activity lime. Due to the application of a top combustion nozzle and a heat accumulating combustion nozzle as well as the design of a rotating bed in a longer soaking area, lime with the particle sizes of 10-200mm can be burnt at the same time, and mineral resources are utilizedsufficiently. Small-sized, medium-sized and large-sized lime can be arranged at different layers, so that overburning and unburnt problems are effectively prevented, the unburnt rate is smaller than 0.5%, and the activity of the lime is increased to 380-420ml. Due to the application of the technology of the rotating bed, powder of the lime product is reduced from 12-30% to 3.0-5.0% compared with that of the traditional equipment, the daily output of the lime reaches 1500-4000 tons, and high-efficiency and high-quality production of the lime is realized. High-temperature smoke of the rotating bed is used for preheating limestone; the heat of high-temperature lime is used for preheating combustion supporting air; and the heat in the system is utilized effectively and comprehensively; moreover, the semi-heat accumulating type rotating bed equipment has the advantages of low comprehensive energy consumption, low production cost and obvious economic and social benefits.

Description

technical field [0001] The invention relates to a lime production process, in particular to a heat storage rotary bed equipment and process for producing large-size high-activity lime. Background technique [0002] Lime is widely used in iron and steel metallurgy, non-ferrous metallurgy, calcium carbide production, chemical industry and other industrial fields, and higher quality requirements are constantly put forward for the quality of lime. At present, the technology and equipment of lime production mainly include sleeve type shaft kiln, chain grate machine rotary kiln, parallel flow regenerative double chamber shaft kiln, double D kiln, beam type burner shaft kiln, suspension kiln, CID kiln and so on. Chinese patent application 200810017556.6 discloses a large-scale energy-saving gas-fired kiln for producing raw materials of high-quality calcium carbide and high-quality lime, which adopts a trolley-type elongated horizontal kiln. Chinese patent application 200910086155....

Claims

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Application Information

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IPC IPC(8): F27B13/00C04B2/10
CPCY02P40/40
Inventor 周生献
Owner 周生献
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