城市配气站工艺设计

城市配气站工艺设计

摘要

天然气一种优质的的矿物质资源，与煤、石油等常规一次能源相比，具有燃烧热值高、清洁、安全、易于运输与储存、经济性好、用途广泛等特点。随着燃气事业的发展，为了满足天然气的大量开采与远距离输送的要求，天然气长输管线、城市配气系统应运而生，而城市配气系统又从配气站开始，天然气在配气站内经过过滤、调压计量、脱水、加臭后，然后通过各级配气管网额气体调压装置保质保量的根据用户要求直接向用户供气。本文通过确定配气站的流程，根据已知条件进行设备计算及选型等任务完成配气站的工艺设计。

本设计的流程为中低压天然气从分别经调压分离、加臭后进入1号汇管或调峰储罐，再经调压后进入2号汇管，从汇管2出来的气体分三个管道流出的气体经过调压，计量后输送至用户1.2.3.

在设备选型方面，分别对管线，汇管，阀门（闸阀、调压阀、安全阀等），分离器，流量计等进行计算并选型，对添味装置以及仪表如压力表，温度计进行比较选型。

关键词：天然气；配气站；工艺流程；工艺设备；

Abstract

A high quality mineral resources of natural gas, compared with the conventional primary energy sources such as coal, oil, and has a high heat of combustion, clean, safe, and easy to transport and storage, good economy, a wide range of uses and so on. With gas career of development, to meet gas of large mining and far distance conveying of requirements, gas long lost pipeline, and city distribution gas system came into being, and city distribution gas system and from distribution gas station began, gas in distribution gas station within after filter, and adjustable pressure measurement, and dehydration, and plus smelly hòu, then through levels distribution tracheal network amount gas adjustable pressure device quality and quantity of according to user requirements directly to user gas. Through this flow of gas distribution stations, according to known conditions for calculation and selection of equipment and other tasks completed process design of gas distribution stations.

The design flow for low pressure gas from, respectively, by regulating after the separation, odorization into manifold 1th or peak tanks, then by pressing enter, 2nd run from the gas manifold 2 three pipe outflow of gas pressure regulating, metering delivered to users after 1.2.3.

In terms of equipment, pipeline separately, manifold, valve (valve, pressure regulating valves, safety valves, etc), separator, flow meters for calculation and model selection, for odorizing devices and meters such as pressure gauges, thermometers compared selection.

Keywords: natural gas distribution station; process equipment;

绪论 .................................................................................................................................................. 1

1.1设计目的及意义 ................................................................................................................. 1 1.2国内外现状及发展趋势 ..................................................................................................... 1 2设计说明书 .................................................................................................................................... 2

2.1设计已知参数及设计内容 ................................................................................................. 2

2.1.1配气站的已知参数 .................................................................................................. 2 2.1.2设计依据及内容 .................................................................................................... 3 2.2可行性研究 ........................................................................................................................ 3 2.3设计参数及设计原则 ........................................................................................................ 3 2.4设计遵循的主要标准及规范 ............................................................................................. 3 2.5技术难点与设计重点 ......................................................................................................... 4

2.5.1难点： ...................................................................................................................... 4 2.5.2关键点 ...................................................................................................................... 4 2.6配气站的工艺要求 ............................................................................................................. 4

2.6.1站址选择 .................................................................................................................. 4 2.6.2站址的安全距离 ...................................................................................................... 4 2.6.3配气站的仪表、设备设置要求： .......................................................................... 5 2.6.4配气站安全 .............................................................................................................. 5

2.6.4.1清扫 ............................................................................................................... 5 2.6.4.2放空 ............................................................................................................... 6 2.6.4.3消防 ............................................................................................................... 6 2.6.4.4报警 ............................................................................................................... 6 2.6.4.5 防腐 ............................................................................................................ 6 2.6.4.6环境保护 ....................................................................................................... 7

2.7配气站主要工艺设备的设计和安装 ................................................................................. 7

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