| 摘要 |
PCT No. PCT/SE89/00617 Sec. 371 Date Jun. 6, 1990 Sec. 102(e) Date Jun. 6, 1990 PCT Filed Nov. 2, 1989 PCT Pub. No. WO90/05027 PCT Pub. Date May 17, 1990.The invention relates to an arrangement in a wet electrostatic precipitator (1) intended for cleansing moisture-and-dust laden gas. The wet electrostatic precipitator (1) includes a condensing cooling arrangement (21) which is integrated with the precipitator unit (20) of the electrostatic precipitator. A plurality of emission electrodes (4) are located within the collector electrodes (5) and the collector electrodes extend through the cooling arrangement (21). Means in the form of distribution pipes (50, 60) are disposed in the upper and lower end-parts of the precipitator unit (20), in a manner such as to achieve uniform distribution of cooling medium (23) on the outer surfaces of the collector electrodes (5), the gas flowing forwardly within the collector electrodes (5). This uniform distribution of cooling medium results in a reduction in the rate of corrosion on the inner surfaces of the collector electrodes (5), as a result of the formation of condensation on these surfaces and as a result of the uniform and low temperature of the collector electrodes and also as a result of a lower concentration of corrosive substances in the condensate. This affords both technical and economical advantages and also enables the collector electrodes to be made of steel which has a relative low alloy content. |
