简述液化气脱硫部分的流程？

简述液化气脱硫醇部分的流程？

A、天然气

B、人工煤气

C、沼气

D、液化石油气

A. 消泡剂

B. 钝化剂

C. 阻垢剂

D. 缓蚀剂

A、从露点降低来看，不少方法都能满足管道输气的要求。对天然气液化前的深度脱水，则以分子筛法为最优。From the point of view of dew point reduction, many methods can meet the requirements of pipeline gas transmission. Molecular sieve method is the best method for deep dehydration before natural gas liquefaction.

B、从投资、操作费用和对操作技术的要求来看，液体吸收法——三甘醇法有突出优点，不但投资省，操作费用低，操作技术也不复杂，而且检修容易，能连续运转，易于实现自动化。From the investment, operating costs and requirements for the operation technology, liquid absorption method - triethylene glycol method has outstanding advantages, not only investment savings, low operating costs, operating technology is not complex, and maintenance easy, continuous operation, easy to achieve automation.

C、选择脱水方法还要同集输流程的规划统一考虑。如果净化厂就在集气站附近，集气管道短，先脱硫后脱水，对脱水要求就可低些，符合管输要求即可。此时以三甘醇法为最优。如果大型净化厂距起源较远，需要长距离输送含水、含硫天然气，尤其是输送高含硫天然气时，为了避免含水含硫天然气对管道和设备的腐蚀，须先深度脱水，以抗酸分子筛为最优。The selection of dehydration method should be considered in accordance with the planning of gathering and transportation process. If the purification plant is near the gas collection station, the gas collection pipeline is short, desulfurization and dehydration first, the requirements for dehydration can be lower, meet the requirements of pipeline transportation. The triethylene glycol method is the best method. If large purification plants are far from the origin, they need to transport water-containing and sulfur-bearing natural gas over a long distance, especially when transporting high-sulfur natural gas. In order to avoid the corrosion of water-containing and sulfur-bearing natural gas on pipelines and equipment, deep dehydration is required and acid-resistant molecular sieve is the best.

D、以上都不对

A. 城市建设应当统筹规划，在燃煤供热地区，统一解决热源，发展集中供热

B. 国家限制企业采用先进的脱硫、除尘技术

C. 企业应当对燃煤燃烧过程中产生的氮氧化物采取控制措施

D. 大、中城市人民政府应当制定规划，对餐饮服务企业限期使用天然气、液化石油气、电或者其他清洁能源