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A lifting valve of low resistance dust collector for convenient maintenance (invention)

Long strong iron and steel project

The flue gas from the gas-fired boiler enters the sodium based (NaHCO3) dry desulfurization (sodium based) dust removal integrated system. The flue gas first enters the sodium based dry desulfurization reactor, and the sodium bicarbonate ultra-fine powder is injected into the sodium based dry desulfurization reactor. The sodium bicarbonate ultra-fine powder decomposes into highly active sodium carbonate and carbon dioxide under the action of high-temperature flue gas. The highly active Na2CO3 is fully contacted with SO2 and other acidic media in the flue gas to produce chemical reaction and be absorbed and purified. Powdery particles after desulfurization The granular products enter the bag filter with the air flow to collect the desulfurization by-products. In addition to the injection point of sodium bicarbonate ultra-fine powder at the sodium based dry process reactor, an additional injection point of sodium bicarbonate ultra-fine powder is set in the flue in front of the air preheater at the outlet of the economizer. When the boiler is in high load operation and the exhaust gas temperature is high, which can meet the requirements of desulfurization reaction temperature, the injection point at the sodium based dry process reactor shall be started; When it is in low load operation, start the injection point in front of the air preheater at the outlet of the economizer to ensure that SO2 can be discharged up to standard under low operating load.

Outlet particulate matter ≤ 4mg / m3; SO2 emission concentration ≤ 20mg / m3;