Abstract
Coal-bed-methane (CBD) electrical power generation is an active and effective measure to reduce emissions of greenhouse gases. Using shell-and-tube heat exchangers to reduce the water content of pipeline gas can improve the efficiency of the generator set. Designing heat exchanger by ASPEN EDR software can save a lot of manual calculation process, so as to improve the efficiency of the heat exchanger designer. The general method of designing and verifying shell-and-tube heat exchanger by EDR ASPEN software is described in this article by the example of the local process of low concentration gas power generation project. Because of the heat flux medium is low concentration coal bed methane with high explosion risk, anti-explosion measures must be taken to ensure safety beyond the requirements of normal heat exchangers of heat transfer, pressure drop.
Highlights
The technology of coal bed methane (CBD) electrical power generation is a very effective energy saving and emission reduction measure, which can reduce the emissions of greenhouse gases, and produce electrical energy to produce economic benefits
The raw material gas is heat-exchanged in a shell-and-tube heat exchanger, the temperature of the raw material gas is reduced, and part of the water is condensed from the raw material gas
The concentration of coal bed methane is within the explosion limit range [7,8], so explosion-proof or explosion-proof measures must be taken in the design of the heat exchanger
Summary
The technology of coal bed methane (CBD) electrical power generation is a very effective energy saving and emission reduction measure, which can reduce the emissions of greenhouse gases, and produce electrical energy to produce economic benefits. Reducing the water content of the CBD can improve the working efficiency and stability of the low-concentration coal bed methane generator. In this technology, the design of the shell and tube heat exchanger is the key work. Tube and shell heat exchangers are the most widely used in various types of heat exchangers because of their low manufacturing cost, easy cleaning, large processing capacity, stable and reliable operation, and large operating temperature and pressure range. The tube and shell type heat exchanger is selected according to the specific conditions of fluid type, temperature range, operating pressure, and the type of device [6]. The concentration of coal bed methane is within the explosion limit range [7,8], so explosion-proof or explosion-proof measures must be taken in the design of the heat exchanger
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