按天然气的烃类组成分类Classification by hydrocarbon composition of natural gas 即按天然气中液烃含量的多少来分类，可分为（）。According to the amount of liquid hydrocarbon content in natural gas classification, can be divided into dry

按酸气含量分类Classification by acid gas content 天然气可分为酸性天然气和洁气。Natural gas can be divided into acid gas and clean gas. 酸性天然气sour natural gas 指含有显著量的硫化物和CO2等酸气，这类气体必须经处理后才能达到管输标准或商品气气质指标的天然气。Refers to the natural gas containing significant amounts of sulphide and CO2 and other acid gas, which must be treated before it can reach the standard of pipeline transportation or the quality index of commercial gas. 洁气Clean air 指硫化物和CO2含量甚微或根本不含的气体，它不需净化就可外输和利用。A gas containing little or no sulphide or CO2 that can be transported and used without purification.

A、吸湿性能好Good moisture absorption

B、烃类在脱水剂中溶解度小Hydrocarbons are less soluble in dehydrating agents

C、容易再生重复使用Easy to reuse

D、蒸汽压低（携带损失小），粘度小Low vapor pressure (small carrying loss), low viscosity

E、不易和天然气组分发生化学反应Does not react easily with natural gas components

F、无腐蚀性non-corrosiveness

G、价格低low price

A、无硫或微含硫天然气 H2S和CO2含量符合管输要求，不需要净化The content of H2S and CO2 in sulfur-free or slightly sulfur-containing natural gas meets the requirements of pipeline transportation and does not require purification；

B、低含硫天然气 H2S含量约为0.0001～0.5％（体积）H2S content of low-sulfur natural gas is about 0.0001 ~ 0.5% (volume)；

C、中含硫天然气 H2S含量约为1～1.5％（体 积），CO2含量约为6～8％（体积）H2S content of natural gas containing sulfur is about 1-1.5% (volume), and CO2 content is about 6-8% (volume).；

D、高含硫天然气 H2S含量一般为4～8％（体积）high sulfur natural gas：H2S content of high-sulfur natural gas is generally 4-8% (volume)

A、烃类：甲烷(主要)、乙烷、丙烷、丁烷、戊烷。Hydrocarbons: methane (mainly), ethane, propane, butane, pentane.

B、非烃类气体：硫化氢、二氧化碳、一氧化碳、氮气、氢气和水蒸气，惰性气体氦气、氩气。其他硫醇、硫醚、二硫化碳、羰基硫等有机硫化物。Non-hydrocarbon gases: hydrogen sulfide, carbon dioxide, carbon monoxide, nitrogen, hydrogen and water vapor, inert gases helium and argon. Other mercaptan, sulfur ether, carbon disulfide, carbonyl sulfur and other organic sulfide.

C、水或盐水，固体颗粒，需分离去除。个别含微量汞。Water or brine, solid particles, to be separated and removed. Some contain trace amounts of mercury.

D、开采工艺注醇等化学药剂，携带进入产气。Chemical agents such as alcohol injection in mining process are carried into gas production.

A、脱附时天然气的滞留量(约30%) Retention of natural gas at desorption (about 30%)

B、吸附剂的装填密度低，降低了贮罐单位体积的储气量The low loading density of adsorbent reduces the gas storage capacity per unit volume of the tank

C、吸脱附时的热效应(甲烷吸附热约12kJ/mol)降低了储气能力The thermal effect of adsorption and desorption (methane adsorption heat of about 12kJ/mol) reduces the gas storage capacity

D、重烃与水对吸附剂的污染Pollution of adsorbent by heavy hydrocarbon and water

E、吸附剂结构对吸脱附量的影响。Effect of adsorbent structure on desorption.

A. 甲烷

B. 乙烷

C. 丙烷

D. 丁烷

A、常压或略高于常压、温度大约为-162.5℃。Atmospheric pressure or slightly above atmospheric pressure, the temperature is about -162.5℃.

B、体积只有同量气态体积的1/625。The volume is only 1/625 of the volume in the gas phase.

C、LNG工业链包括天然气预处理、液化、储存、运输、接收、应用等环节。The LNG industrial chain includes natural gas pretreatment, liquefaction, storage, transportation, reception and application.

D、高压、温度大约为162.5℃。High pressure, temperature is about 162.5℃.

用三甘醇对含硫天然气脱水时 ，三甘醇会吸收一些H2S，其富液将在重沸器引起腐蚀，H2S与铁生成硫化铁，使溶液呈黑色，但对三甘醇的吸湿性能并无明显影响。天然气的酸气组分过高，必然会使三甘醇溶液的pH值（应在7.5～8之间）下降。生成有机酸，对脱水不利。When the natural gas containing sulfur is dehydrated with triethylene glycol, some H2S will be absorbed by the triethylene glycol, and its rich liquid will cause corrosion in the reboiler. H2S and iron will form iron sulfide, making the solution black, but it has no obvious influence on the hygroscopic property of triethylene glycol. Too high acid gas composition of natural gas will inevitably reduce the pH value of triethylene glycol solution (which should be between 7.5 and 8). The formation of organic acids is detrimental to dehydration.