Spray drying apparatus for dehydrated filtrate from desulfurization waste water, and exhaust gas treatment system
A drying device and waste gas technology, applied in water/sewage treatment, heating water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high treatment cost, complicated removal and treatment, etc., and achieve the effect of preventing scale
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Embodiment 1
[0029] figure 1 It is a schematic configuration diagram of the exhaust gas treatment system of Example 1. figure 1 The illustrated exhaust treatment system 10 removes nitrogen oxides (NO x ), sulfur oxides (SO x ), mercury (Hg) and other harmful substances, and the exhaust gas 18 comes from boilers 11 such as coal-fired boilers that use coal as fuel and heavy oil-fired boilers that use heavy oil as fuel.
[0030] The exhaust gas treatment system 10 includes: a boiler 11 that burns the fuel F; a denitration device 12 that removes nitrogen oxides in the exhaust gas 18 from the boiler 11; an air heater 13 that heats up the heat of the denitrated exhaust gas 18 Recycling; dust collector 14, which removes smoke and dust in the waste gas 18 after heat recovery; desulfurization device 15, which utilizes lime slurry 20 as the absorption liquid to remove sulfur oxides contained in the waste gas 18 after dust removal; dehydrator 32, It removes gypsum 31 from the desulfurization waste...
Embodiment 2
[0077] Figure 4 It is the schematic diagram of the spray drying apparatus of the dehydration filtrate derived from the desulfurization waste water of Example 2. In addition, the same code|symbol is attached|subjected to the same member as 50 A of spray drying apparatuses of Example 1, and the description is abbreviate|omitted.
[0078] like Figure 4 As shown, the spray drying device 50B of this embodiment is provided with a cleaning liquid storage tank 74 for realizing the recovery and reuse of the cleaning liquid 72 of the cleaning mechanism.
[0079] The wetting wall 72a formed on the inner surface of the spray drying device main body washes the deposited deposits, and the cleaning liquid 72 is recovered by the recovery tank 73, and the recovery pipeline L is used to 31 It is recovered and stored in the cleaning liquid storage tank 74, and is passed through the cleaning liquid supply line L by the circulation pump 75. 32 The cleaning liquid 72 is supplied to the cleanin...
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