New compressed gas coolers for compressor plants
- PDF / 422,071 Bytes
- 7 Pages / 594 x 792 pts Page_size
- 18 Downloads / 231 Views
COMPRESSED GAS COOLERS FOR COMPRESSOR PLANTS
D. L. Astanovskii, M. A. Silman, L. Z. Astanovskii, and P. V. Verteletskii
A radial-helical type of heat exchanger designed by FAST ENGINEERING, which can be used in compressor plants for cooling compressed gas (including high-pressure), circulation oil, etc., is described. Uniform distribution of media in exchangers of the new design, absence of stagnant zones, mechanical stresses developed due to temperature gradients in the structural elements, etc., ensure new positive operational qualities of the exchangers. Examples, where removal of hardening-salt deposits from the surfaces of the new-generation exchangers in the course of their operation is shown to be redundant, are cited. Keywords: radial-helical type of heat exchanger, compressor plant, surface area, heat transfer coefficient.
Gas (including air) compressor plants provide for cooling of the medium being compressed in intermediate (interstage) and terminal coolers. Intermediate cooling helps maintain admissible temperature in the compressor stages and reduce energy consumption for compression, and terminal cooling helps meet the compressed gas temperature requirements of the technological process [1–3]. Currently, the gas being compressed is cooled essentially in shell-and-tube type of heat exchangers, which are bulky, metal-consuming, and have high hydraulic resistance and limited employment potentials, especially in case of steep pressure and temperature gradients as well as of high consumption of media. In view of this, several of such apparatuses operating in parallel are installed in high-capacity compressor plants. Heat exchangers of other familiar types (plate, screw, helical, etc.) are not used for cooling compressed gas because of high hydraulic resistance and limitations on admissible temperatures, pressures, and pressure and temperature gradients of the media [4, 5]. Also, one of the major flaws of the familiar heat exchangers is deposition of hardening salts from the cooling water on the surfaces and the need for their periodic removal. FAST ENGINEERING company has developed a heat exchanger (HE) of a fundamentally new design, namely of the radial-helical type (Fig. 1), which may be used for heating and cooling of the working media in various combinations (liquid–liquid, liquid–gas, gas–liquid, gas–gas) and, in particular, for cooling compressed gas in high-pressure compressor plants, circulating oil, etc. [6, 7]. This type of heat exchangers consists of a cylindrical heavy-duty shell where blocks having helical surfaces forming radial-helical and axial slit channels for flows of media are installed along the axis. The salient merits of the new-generation heat exchanger designed by FAST ENGINEERING [8, 9] are: 1) possibility of implementing processes of heat exchange of gas and liquid flows for the requisite throughput in a single apparatus; 2) uniform distribution of media across the surfaces; 3) low hydraulic resistance of heat carrier flows; FAST ENGINEERING, Moscow. Translated from Khimicheskoe
Data Loading...
