| As a precious natural resource, natural gas is used widely in people's life and industry. It is not only high grade and clean fuel, but also an important raw material of chemical industry in last history. Ethylene decompounded from light hydrocarbon is a base raw material of synthetic organic product, which can be used to made hundreds of synthetic material, and it is the most output intermediate product in the world. It is a beneficial and low cost way, need not much investment to produce ethylene by means of liquefied natural gas.With the popularization of science and technology and enhancement of people's safety consciousness, different trades put forward higher requirement to efficiency rate, reliability, safe nature, economy and its science etc in the process. In order to improve labor's environment and intension, cut down the reduction of output and stop production by man's factors, designing a high efficiency's control system for Light Hydrocarbon Recovery's apparatus, and it is important to improve and strengthen the auto-control grade of whole apparatusThe main contents of this paper includes:1) This paper gives a overall summary of the function of natural gas chemical industry, the reason why we recover NGL, deep process ways of NGL and their development trends.2) A computer program for NGL recovery calculation is made by VB6.0.3) Control system of NGL recovery apparatus is studied, and4) Design the control system of NGL recovery apparatus' unit with the soft of the king of configuration 6.0. |
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