Plate heat exchanger

Abstract

The invention discloses a plate heat exchanger which is provided with adjacent two positive flanged sides and adjacent two negative flanged sides. Further, a plate heat exchanger is disclosed, whereinthe heat exchanger core is composed of the above heat exchanger plate and has a first medium passage and a second medium passage; a first air inlet port and a first air outlet port are connected to both ends of the first medium passage and are respectively located on the negative flanged sides in different directions; a second air inlet port and a second air outlet port are connected to both endsof the second medium passage and are respectively located on the positive flanged sides in different directions so that piping (or installation) is convenient to meet the situation that the inlet andoutlet of cold and hot fluid are not in the same direction. A plate heat exchanger is also disclosed. The first air inlet port and the first air outlet port are located on the same flanged side of the adjacent two flanged sides; a first ash cleaning door is arranged on the other side of the adjacent two flanged sides; the second air inlet port and the second air outlet port are located on the same positive folded side of the adjacent two positive folded sides; the second ash cleaning door is arranged on the other positive folded side of the adjacent two positive folded sides. The plate heat exchanger can realize ash cleaning on both sides.

Description

technical field [0001] The invention belongs to the field of waste heat recovery of dust-laden hot flue gas and preheating of low-temperature dust-laden waste gas, and specifically relates to a plate heat exchanger using heat exchange plates with two adjacent positive folds and two adjacent reverse folds. Background technique [0002] As the country vigorously promotes the "energy saving and emission reduction" strategic policy, the energy saving awareness of enterprises has been significantly improved, and the initiative for energy saving transformation has increased significantly. Therefore, the market has a great demand for heat exchangers. However, in the process of energy-saving transformation, it is inevitable to encounter the situation that high-temperature dusty flue gas needs waste heat recovery, and low-temperature dusty exhaust gas needs to be preheated. Dust in hot and cold gas can easily cause heat exchanger blockage. [0003] As far as the current stage is conc...

AI Technical Summary

Problems solved by technology

[0005] Additionally, combined with figure 1 As shown, the plate heat exchangers on the market generally use the form of connecting elbows to realize the connection with the pipeline. Although it can also meet the needs of the process, the equipment manufacturing cost is high, the workload is heavy, and the equipment volume becomes larger. relatively bulky

Images