Air compressor working principle

On the one hand, the expansion heat exchanger is to reduce the temperature of the air after expansion by utilizing the cooling amount of the sewage nitrogen returned from the upper tower, so as to reduce the superheat of the air after expansion into the upper tower; on the other hand, it plays a role in distributing the cooling capacity of the upper and lower towers. Through it, the cooling amount of dirty nitrogen from the outlet supercooler to the switch-type heat exchanger (or the cooler) is partly returned to the upper tower, which improves the rectification of the upper tower. The location of the expansion heat exchanger can be placed in front of or behind the expansion machine, which is determined by the process design. The large air separation equipment in our country is often set in front of the machine, using part of the dirt nitrogen from the supercooler to cool the air in front of the expansion machine, so that the temperature behind the expansion machine is not too high,...

Small air separation equipment consists of air compressor, purifier, air separation Tower, expander, oxygen compressor and other main parts. Before starting, all parts of the equipment should be ensured to be in good condition and can be put into operation at any time. (1) The start-up preparation of piston air compressor after the installation of air compressor, it should be tested according to the instruction manual. The daily preparation work before driving should remember the words "water, oil, gas, electricity and safety", and check according to these five aspects. 1) Water: Open the cooling water, oil cooler cooling water and inlet valve of cylinder liner and cooler at all levels, and check whether the cooling water is unblocked and adjusted properly; 2) oil: it includes the lubricating oil of the cylinder and the lubricating oil of the running part. Shake the plunger oil pump by hand until the oil flows out of the check valve of each oil injection point is opened, and fill up...