河南省南阳市灰砂砖厂为了充分利用蒸压釜余汽,自行对K_4锅炉的进水进行了革新,由原来的进冷水改为进热水,取得了一定的经济效益。即把蒸压釜剩余的废汽通过管道送入用17毫米钢板卷焊成容纳10立米水的热水罐里,然后经软化 In order to make full use of autoclave vapor, Henan Province Nanyang Lime-and-Sand Brick Factory independently reformed the water intake of the K_4 boiler, and changed the original cold water into hot water, and achieved certain economic benefits. That is, the remaining waste steam of the autoclave is sent into a hot water tank containing 10 μm water by 17 mm steel plate through a pipe, and then softened.