System and method for preparing cement co-production sulfur by utilizing urban wastes and industrial solid wastes

A technology for industrial solid waste and municipal waste, applied in chemical instruments and methods, chemical industry, sulfur preparation/purification, etc., can solve problems such as aggravating the environmental greenhouse effect, save heat, save water resources and energy, and achieve reduction quantified effect

Active Publication Date: 2017-06-09
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In actual production, limestone decomposes at 850-900°C to produce CaO and CO 2 , CO 2 Escaping from waste, because sulphoaluminate cement clinker needs to us

Method used

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  • System and method for preparing cement co-production sulfur by utilizing urban wastes and industrial solid wastes
  • System and method for preparing cement co-production sulfur by utilizing urban wastes and industrial solid wastes

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with accompanying drawing.

[0062] A system for producing cement co-production sulfur from municipal waste and industrial solid waste, including homogenization tank, filter press, dryer, raw meal grinding machine, rotary kiln, cement grinding machine, hot water storage tank, dust collector and reduction Fixed bed, red mud, wet sludge and industrial water enter the homogenization tank for homogenization treatment and dealkalization, and then enter the filter press for pressure filtration, and the solid materials after pressure filtration enter the dryer for drying, and after drying, they are combined with desulfurization gypsum Enter the raw material grinding unit for raw powder proportioning grinding, and the ground material enters the rotary kiln for high-temperature calcination to obtain sulphoaluminate clinker, and the sulphoaluminate clinker and desulfurized gypsum enter the cement grinding machine...

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Abstract

The invention discloses a system and a method for preparing cement co-production sulfur by utilizing urban wastes and industrial solid wastes. The system comprises a homogenizing tank, a filter press, a drier, a raw material mill unit, a rotary kiln, a cement mill, a hot water storage tank, a dust remover and a reduction fixed bed; red mud, wet sludge and industrial water enter the homogenizing tank to be homogenized and dealkalized, and then enter the filter press to be filter-pressed; a filter-pressed solid material enters the drier to be dried, the dried solid material together with desulfurization gypsum enters the raw material mill unit for raw powder ratio milling; a milled material enters the rotary kiln for high-temperature calcination to obtain a sulphoaluminate clinker; the sulphoaluminate clinker together with desulfurization gypsum enters the cement mill for mixed milling to obtain sulphoaluminate cement; hot water in the hot water storage tank provides heat for the homogenizing tank; sulfur dioxide-containing flue gas generated in the rotary kiln is subjected to dust removal through the dust remover and is conveyed to the reduction fixed bed for reduction to obtain the sulfur.

Description

technical field [0001] The invention relates to the fields of chemical industry, building material technology, comprehensive resource utilization of bulk industrial solid waste and urban sludge, and environmental protection treatment, and specifically relates to a system and method for preparing sulphoaluminate cement and co-producing sulfur by utilizing urban waste and industrial solid waste. Background technique [0002] Since the reform and opening up, with the rapid development of my country's industry and the acceleration of urbanization, a large number of various toxic and harmful industrial solid wastes have been produced, and the number is still rising. Bulk industrial solid waste, referred to as bulk solid waste, refers to the industrial solid waste that produces more than 10 million tons annually in the field of industrial production in my country and has a great impact on the environment and safety, mainly including red mud, desulfurized gypsum, smelting slag, and ...

Claims

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Application Information

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IPC IPC(8): C04B7/32C01B17/04
CPCC01B17/0473C04B7/32Y02P20/10Y02P20/129
Inventor 王文龙任常在毛岩鹏孙静宋占龙赵希强
Owner SHANDONG UNIV
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