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Biomass boiler denitration system

A biomass, desulfurization and denitrification technology, applied in air quality improvement, gas treatment, membrane technology, etc.

Inactive Publication Date: 2020-11-27
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is a basic oxide, which is easily soluble in water and reacts with NOx and SOx, but its aqueous solution is a strong alkali and is corrosive

Method used

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  • Biomass boiler denitration system

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Embodiment Construction

[0010] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0011] As shown in the figure, a biomass boiler desulfurization and denitrification system includes two special parallel reactor groups ⑶ made of carbon steel with SiO2 glass fiber coating, and a thermometer ⑾, Ca(OH) 2 Concentration monitoring device ⑽, one end of parallel reactor group ⑶ is connected to biomass boiler flue ⑴, and the other end of parallel reactor group is connected to a waste heat recovery device ⒅ equipped with temperature monitoring device and NOx monitoring device ⑼, waste heat recovery device ⒅ Connect a dust removal device ⒆, and connect a chimney ⒇ after the dust removal device ⒆. The upper ends of reactor 1 and reactor 2...

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Abstract

The invention relates to a novel biomass boiler flue gas desulfurization and denitrification integrated system. Specifically, a flue gas desulfurization and denitrification reaction part of the systemcomprises a reactor, an air blower, a water tank, a water feeding pump and a quick lime storage tank which are connected in parallel. The circulating operation of the system depends on monitoring ofa Ca(OH)2 concentration meter, a water flow meter, an air flow meter, a thermometer and a NOx concentration meter in the reactor so as to set a proper alternate operation period, and the solid-liquidseparation device is used for separating and recycling reacted substances of the reactor which finishes the period and suspends operation, so that the economic cost is reduced while the operation lifeof a unit is prolonged. The system is assisted by a waste heat recovery device, so that the heat of the purified low-temperature flue gas is further utilized to improve the economic benefit of the equipment, and a good reference is provided for research and application of environment-friendly and efficient biomass boiler flue gas purification treatment equipment.

Description

technical field [0001] The invention relates to a novel biomass boiler desulfurization and denitrification system. Background technique [0002] At present, the utilization of biomass energy has become a research hotspot, and heat utilization equipment such as biomass boilers and biomass gasifiers are becoming more and more popular. fossil fuel. The direct combustion of biomass fuel will inevitably produce a large amount of harmful flue gas, which contains considerable components of sulfur oxides and nitrogen oxides, which will pollute the atmospheric environment. From the perspective of environmental protection, it is important to desulfurize and denitrify boiler flue gas. Significance, and the use of new ideas for biomass boilers for flue gas desulfurization and denitrification just came into being. [0003] Due to the limitations of low-nitrogen combustion technology in boiler flue gas desulfurization and denitration, the emissions of nitrogen oxides NOx and sulfur oxid...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/60
CPCB01D53/78B01D53/60B01D2258/0283B01D2251/404B01D2251/604Y02A50/20
Inventor 吕薇李雪松陶立
Owner HARBIN UNIV OF SCI & TECH
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