Patent ID: 11946004
Assignee: ZHENHAI PETROCHEMICAL JIANAN ENGINEERING CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  F | IPC B  C  F

Claim 6:
7. The atmospheric-vacuum heat exchange system of claim 1, wherein the winding-tube heat exchangers (the heat exchangers in the first heat exchanging group and/or the second heat exchanging group) have a plurality of single-stream winding-tube heat exchangers (1), two-stream winding-tube heat exchangers (2) and three-stream winding-tube heat exchangers (3);
the single-stream winding-tube heat exchangers (1) are heat exchangers having one shell passage and one tube passage when N=1;
the two-stream winding-tube heat exchangers (2) are heat exchangers having one shell passage and two tube passages when N=2; and
the three-stream winding-tube heat exchangers (3) are heat exchangers having one shell passage and three tube passages when N=3.