CAJ | 학술논문

迪那2凝析气田天然气处理采用J-T 阀＋乙二醇抑制剂低温冷冻分离工艺，设计单套处理量400×104 m3/d、制冷温度-20℃，投产后进站温度由设计的45℃升至65℃，乙二醇加注量不能满足设计制冷温度的要求，低温分离器频繁发生冻堵，单套处理能力限制在200×104 m3/d、制冷温度-15℃。利用HYSYS软件对脱水脱烃装置进行模拟优化，确定天然气饱和水增加是造成装置冻堵的原因，制定了装置适宜运行参数表，避免装置发生冻堵，提出了分水器改造建议，实施后脱水脱烃装置达到设计参数，大幅度提高了液化气和轻烃产量，减少了乙二醇损耗，并提出了凝析气先空冷再分离的标准气处理工艺。
적나2응석기전천연기처리채용J-T 벌＋을이순억제제저온냉동분리공예，설계단투처리량400×104 m3/d、제랭온도-20℃，투산후진참온도유설계적45℃승지65℃，을이순가주량불능만족설계제랭온도적요구，저온분리기빈번발생동도，단투처리능력한제재200×104 m3/d、제랭온도-15℃。이용HYSYS연건대탈수탈경장치진행모의우화，학정천연기포화수증가시조성장치동도적원인，제정료장치괄의운행삼수표，피면장치발생동도，제출료분수기개조건의，실시후탈수탈경장치체도설계삼수，대폭도제고료액화기화경경산량，감소료을이순손모，병제출료응석기선공랭재분리적표준기처리공예。
J-T valve+ethylene glycol low temperature freezing separating process was adopted to separate water and hydrocarbon of natural gas ,and prevent hydrate formation by ethylene gly-col in Dina 2 gas field .The design capacity of a single set is 400 × 10 4 m 3/d and the design refrige-ration temperature is -20 ℃ . When the plant started production , the feed gas temperature raised from 45 ℃ to 65 ℃ .The ethylene glycol dosage was too small to prevent the hydrate for-mation under the design refrigeration temperature ,and the hydrate formed in the LT separator frequently .The process capacity was restricted to 200 × 104 m3/d ,and the refrigeration tempera-ture was -15 ℃ .In this paper ,the simulation and optimization of the dehydration and dealkyla-tion unit was studied by HYSYS software .The increasing saturated water of feed gas resulted in the hydrate formation .The appropriate parameters table was set out ,which helped to prevent hydrate formation .The process capacity of dehydration unit meets the requirement of design pa-rameter after the installation of water separator .The yield of LPG and light hydrocarbon are im-proved significantly while the loss of ethylene glycol was decreased .The standard gas process was proposed for condensate gas ,which flow into air cooler first then by water separator .