摘要:
A method of improving the efficiency of large industrial boilers of the type using heat exchangers heated by superheated steam diverted from the steam used to produce energy, which heat exchangers elevate the temperature of the air heater section of such boilers to minimize corrosion caused by the condensation of SO.sub.3 to produce sulfuric acid which comprises reducing the temperature of the air heater by throttling the steam fed the heat exchanger while, at the same time, using an amount of sulfuric acid neutralizing chemical in the air heater section of such boilers to neutralize any increase in the sulfuric acid formed.
摘要:
A method for the electrostatic precipitation of dust particles entrained in a gas stream which comprises adding predetermined amounts of hexamethylene tetramine or its water-soluble salts into the particle-laden gas stream in a location preceding the precipitation apparatus where the gas is at a temperature not greater than 800.degree. F.
摘要:
Pollution from industrial plants which produce NO.sub.x and waste water is reduced by utilizing waste water to prepare aqueous NO.sub.x -reducing solutions. Total water hardness in the waste water is preferably maintained below 2500 ppm, silicate below 200 ppm and the calcium to magnesium ratio above 2:1. The aqueous NO.sub.x -reducing solution will preferably contain hardness suppressing compostions in effective amounts.
摘要:
A method for the electrostatic precipitation of dust particles entrained in a gas stream which comprises adding predetermined amounts of acid washed montmorillonite clays into the particle-laden gas stream in a location preceding the precipitation apparatus where the gas is at an elevated temperature.
摘要:
A method for the electrostatic precipitation of dust particles entrained in a gas stream which comprises adding predetermined amounts of a molecular sieve into the particle-laden gas stream in a location preceding the precipitation apparatus where the gas is at an elevated temperature.
摘要:
A method for the electrostatic precipitation of dust particles entrained in a gas stream which comprises adding small amounts of a treatment chemical into the particle-laden gas stream in a location preceding the precipitation apparatus where the gas is at an elevated temperature. The treatment chemical comprises a blend of ammonium sulfate and triethylamine sulfate combined in a weight ratio of from 12:1-0.5:1.