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System and method for producing high-silicon sulphoaluminate cement by utilizing biomass ash

A technology of sulphoaluminate cement and biomass power plant ash, which is applied in the field of systems and methods for producing high-silicon sulphoaluminate cement by utilizing biomass ash slag, and can solve problems affecting the normal operation of shaft kilns, reducing cement strength, and cement strength. Instability and other problems, to achieve the effect of comprehensive and high value-added utilization, not easy to form loops, and prolong the life of equipment

Pending Publication Date: 2022-07-29
国能生物发电集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology helps improve the effectiveness of treating combustion exhaust gas from coal fired plants by removing harmful substances that are formed when burning fuel with these materials or other fuels containing nitrogen (ammonia). It also includes methods for producing pure silicate glass ceramic products without excessive impurities. Overall, this method allows efficient treatment of different types of solid waste while reducing environmental impact through recycling resources.

Problems solved by technology

This patented technical problem addressed in the patents relates to reducing the amount of fossil fuel residue generated during manufacturing processes like coal combustion. Current solutions involve adding various substances into these fuels, increasing costs associated therewith while limiting their use potential.

Method used

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  • System and method for producing high-silicon sulphoaluminate cement by utilizing biomass ash
  • System and method for producing high-silicon sulphoaluminate cement by utilizing biomass ash
  • System and method for producing high-silicon sulphoaluminate cement by utilizing biomass ash

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Embodiment 1

[0064] A system for producing high-silicon sulfoaluminate cement using industrial solid waste biomass power plant ash pretreatment, including ash homogenization tank, sedimentation tank, flash evaporator, concentrator, filter press, crusher, drying machine, shaft kiln, cement pulverizer, cement storage tank, waste heat recovery device, dust collector. Among them, the biomass power plant ash and calcium carbide slag are adjusted in the homogenization tank for dealkalization and desalination, and the slurry after dealkalization and desalination enters the filter press for filtration and drying in the dryer to obtain dry materials; desulfurization gypsum enters the drying process. Heating in a desiccator converts it into hemihydrate gypsum with a water content of less than 3%; the filtrate containing alkali and salt is evaporated, concentrated and crystallized to obtain alkali and salt.

[0065] The ash slag grinder, the homogenization tank and the filter press are connected in s...

Embodiment 2

[0069] A method for producing high-silicon sulfoaluminate cement by utilizing industrial solid waste biomass power plant ash and slag pretreatment. The biomass power plant ash, biomass power plant slag and calcium carbide slag are mixed and homogenized, and the solid-liquid ratio is 1:3 , get the alkali-containing slurry, and use the waste heat equipment to recover the waste heat of the dryer flue gas to heat the alkali-containing slurry, so that the temperature of the alkali-containing slurry is maintained at 60-70 ℃, so that the alkali content in the biomass ash and slag is reduced to the original 10% or less, the moisture content of the batching slurry after pressure filtration is 35% (wt%), and after natural drying, the moisture content is reduced to 16% (wt%). The dried raw meal is sent into the dryer. In terms of the dried solid matter, biomass power plant ash accounts for 27 parts by weight, biomass power plant slag accounts for 30 parts, desulfurization gypsum accounts ...

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Abstract

The invention provides a system and a method for producing high-silicon sulphoaluminate cement through biomass power plant ash pretreatment, and belongs to the fields of metallurgy, electric power, chemical engineering, building material technologies and resource comprehensive utilization and environmental protection and treatment of biomass power plant ash. According to the biomass power plant ash treatment system and method, the economic benefits are high, industrial solid waste such as biomass ash, desulfurized gypsum and carbide slag can be comprehensively utilized, high-value products are produced by utilizing the industrial solid waste through the low-cost production process, the production raw materials are wide in source and low in price, and the economic benefits are high. The produced high-silicon sulphoaluminate cement clinker can be used for producing additives of special cement or conventional cement, and can be applied to first-aid repair, rush building engineering, winter construction engineering, anti-corrosion engineering and the like, so that the high-silicon sulphoaluminate cement clinker has good practical application value, especially large-scale industrialization and industrial application value.

Description

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Claims

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Application Information

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Owner 国能生物发电集团有限公司
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