Gas cooler of nitrogen-hydrogen compressor

Abstract

A first-section nitrogen-hydrogen compressor gas cooler with good cooling effect comprises a cooler casing. A cavity of the cooler casing is internally provided with a heat exchange bent tube inner core which is a soft water bent tube inner core; the soft water bent tube inner core is of a aluminum material, the first-section nitrogen-hydrogen compressor gas cooler further comprises an aluminum refrigeration calandria tube which is positioned beside the cooler casing, and the aluminum refrigeration calandria tube is hermetically communicated with the cavity of the cooler casing; the aluminum refrigeration calandria tube comprises various rows of water-cooled tubes from top to bottom, and the adjacent rows of the water-cooled tubes are connected with each other in series by an aluminum bent tube which is hermetically communicated with the water-cooled tubes; and the aluminum bent tube is connected with the water-cooled tubes by a flange.

Description

technical field [0001] The invention relates to a nitrogen-hydrogen compressor, in particular to a first-stage gas cooler for a nitrogen-hydrogen compressor. Background technique [0002] After the nitrogen and hydrogen compressor gas is compressed and pressurized in the production of methanol and synthetic ammonia, the temperature is about 140°C. Steel heat exchange equipment is used to reduce the temperature. A section of compressed gas uses a vertical shell-and-tube water cooler. A cooling inner core composed of a group of ￠25×2.5 steel pipes is built into the steel shell. Cooling water is passed into the inner core tube, and the tubes are cooled by compressed gas. In this way, the gas compression heat is transferred to the cooling water, and the cooling water enters the cooling water system for recycling. [0003] 1. Presentation of the question [0004] In the actual operation of the vertical water cooler originally designed, the circulating cooling water passing thro...

AI Technical Summary

Problems solved by technology

[0004] In the actual operation of the vertical water cooler originally designed, the circulating cooling water passing through the pipe tends to accumulate dirt, which makes the heat exchange effect worse and worse, while the compressed gas outside the pipe is cooled and oily dirt adheres with the oil and water at the same time. Between the tubes, in addition to seriously affecting the heat exchange effect, it is easy to cause the flow area between the tubes to shrink, resulting in increased resistance, seriously affecting the passage of gas, increasing the pressure, and at the same time reducing the compression ratio between the compressor sections. Imbalance, resulting in damage accidents of the compressor broken crosshead, piston rod and other parts, affecting the normal operation of the entire production

The gas pressure of the first section of the compressor is generally around 0.25MPa, and the temperature is as high as 140°C. The heat is taken away by the cooling water, which causes waste if it is not recovered. At the same time, it also increases the heat load of the cooling water system. Due to the disadvantages of the cooler, the steel water-cooled radiator is modified by itself. Although the resistance problem has been improved, the heat still cannot be recycled.

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