Desulfurization and denitrification equipment

>Desulfurization and Denitrification Equipment
1. Denitrification Technology
In order to prevent excessive pollution of the environment after burning coal in the boiler, coal should be denitrified. It is divided into denitrification before combustion, denitrification after combustion and denitrification after combustion.
Our company's mature denitration technology has two technical solutions: (selective catalytic reduction technology) (non-selective catalytic reduction technology).
Selective catalytic reduction technology is to inject a reducing agent into the flue gas. Under certain temperature conditions, the catalytic effect of a metal catalyst is used to cause a reduction reaction between the injected reducing agent and the gas in the flue gas to produce non-toxic Public nuisance and. The reducing agents are mainly urea and urea.
The unique ammonia injection system ensures that the escape rate of ammonia at the outlet is very low, less than
It can effectively inhibit the conversion into (conversion rate < and reduce the corrosion at the outlet of the absorption tower
The by-products after the reaction are nitrogen and water, without secondary pollution.
Chemical reaction formula +++
+++
Applicable conditions for selective catalyst reduction
Reaction temperature ℃ (depends on flue gas conditions)
Denitrification efficiency or above
Practical catalyst life time, hours~, hours
Catalyst device form honeycomb plate type
Ancillary equipment reaction drug storage and supply/reducing agent/control.
Non-selective catalytic reduction process, used to reduce nitrogen oxides emitted by fixed burners. Will stabilize The urea preparation is precisely injected into the high-temperature flue gas generated by the burner. The injection system is tailor-made for each user to meet the temperature window between ammonia and reaction. Multi-layer injection is designed as needed, which can be adjusted according to the boiler load. Automatically adjust urea injection according to changes in changes and combustion conditions. Rely on computer simulation fluid dynamic model technology and chemical dynamic model technology to simulate the flue gas flow field and temperature field in a specific boiler. Based on the provided flow field and temperature field, use the model to calculate the relationship between urea and The reaction speed. Based on the calculation results of these two models, the optimal injector layout plan is determined.
This technology can be used in combination with the low-nitrogen burner air staged combustion air system to achieve the best denitrification efficiency. At a high temperature of ℃, it can react with or without a catalyst, and the reagent is directly injected into the furnace through the side wall.
Economical and reliable removal method
The denitrification efficiency is
Small space occupied
No by-products need to be processed
According to the removal requirements, the operation can be adjusted.
Secondary denitrification equipment supplies various denitrification engineering equipment and accessories
Main equipment of the system
Urea solution Storage and preparation system equipment
Urea solution dilution transfer metering injection equipment.
Main system equipment
Reactor/catalyst system product equipment Reactor catalyst soot blower
Flue gas/ammonia Mixing system dilution fan static mixer ammonia injection grille ammonia/empty mixer
Ammonia reserve and supply system equipment unloading compressor ammonia evaporator ammonia tank buffer tank dilution tank
flue system equipment baffle Expansion joint guide plate flue
Control system.
Other related accessories
Mixer distributor, medium atomization gun, electric regulating valve, medium atomization nozzle, denitrification pump, etc.