| 摘要 |
The present invention relates to a dual pipe-type sludge heat exchanger. The heat exchanger includes an inner pipe in which sludge passes through, and an outer pipe is placed coaxially outside the inner pipe. Between the outer surface of the inner pipe and the inner surface of the outer pipe, high-temperature water passes through to heat the sludge inside the inner pipe using the heat of the high-temperature water. The inner pipe includes: linear inner pipe parts (10A) which are arranged in multiple lines in parallel at regular intervals; and curved inner pipe parts (10B) which connect one ends of two adjacent linear inner pipe parts arranged in parallel. The outer pipe includes: linear outer pipe parts (20A) which are placed outside the linear inner pipe parts; and curved outer pipe parts which are placed outside the curved inner pipe parts in a way that each curved inner pipe part is arranged coaxially inside. |
