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Rotary cement kiln waste heat utilization system with multistage heat accumulation system

A cement rotary kiln and heat storage system technology, applied in the direction of rotary drum furnace, waste heat treatment, lighting and heating equipment, etc., can solve the problems of reducing energy consumption and achieve the effect of avoiding low temperature corrosion

Inactive Publication Date: 2015-01-07
山东省能源与环境研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The clinker of cement is burned by dry method, which reduces the dehydration process, thereby greatly reducing energy consumption. Therefore, the advanced new dry method cement production can save energy by 50%-60% compared with wet method production, but there is still a wide space for energy saving.

Method used

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  • Rotary cement kiln waste heat utilization system with multistage heat accumulation system
  • Rotary cement kiln waste heat utilization system with multistage heat accumulation system
  • Rotary cement kiln waste heat utilization system with multistage heat accumulation system

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Embodiment Construction

[0040] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, a cement rotary kiln waste heat utilization system includes a cement rotary kiln 1, at least one heat utilization device (figure 1 Only two are shown, but actually not limited to two) and the bypass flue 4, the flue gas generated by the cement rotary kiln 1 passes through the heat utilization device for heat exchange, and then is discharged from the tail flue.

[0042] Such as figure 1 As shown, there are two heat utilization devices, and the pipelines where the two heat utilization devices 2 and 3 are located are in parallel structure, and are connected in parallel with the bypass flue 4, and the pipelines where the two heat utilization devices 2 and 3 are located are respectively set The regulating valves 5 and 6 are used to regulate the flow rate of the flue gas entering the heat utilization device to ...

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Abstract

The invention provides a rotary cement kiln waste heat utilization system which comprises a rotary cement kiln and a plurality of heat utilization devices. At least one heat utilization device is the multistage heat accumulation system which comprises multiple stages of heat accumulation heat exchangers which are connected through connection sections. Heat accumulation capabilities of heat accumulation materials in the heat accumulation heat exchangers are different. The heat accumulation capabilities of the heat accumulation materials in the multiple stages of heat accumulation heat exchangers are reduced gradually along the smoke flowing direction. Waste heat generated during cement production is fully utilized to maximize the heat exchange efficiency, save energy and achieve the aim of protecting environment and saving energy.

Description

technical field [0001] The invention relates to a high-efficiency cement production process waste heat utilization system, which belongs to the field of waste heat utilization of F27d. Background technique [0002] The cement industry is a high energy consumption and high pollution industry. The total energy consumption of my country's cement industry in 2012 was 270 million tons of standard coal, accounting for 8% of my country's total raw coal output in 2012. The new dry process is an advanced cement production process. The clinker of cement is fired by the dry method, which reduces the dehydration process, thereby greatly reducing energy consumption. Therefore, the advanced new dry method of cement production can save energy by 50%-60% compared with the wet method, but there is still a wide space for energy saving. In 2010, in order to further improve the energy utilization efficiency of cement enterprises and reduce the cost of cement enterprises, the Ministry of Indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B7/20F27B7/42F27D17/00
CPCY02E60/14Y02P10/25
Inventor 程林杜文静
Owner 山东省能源与环境研究院
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