1.乙(yi)(yi)(yi)(yi)(yi)醇(chun)法(fa)　以(yi)乙(yi)(yi)(yi)(yi)(yi)醇(chun)为原料，以(yi)氧化镁二(er)(er)(er)(er)(er)(er)(er)氧化硅为主催(cui)(cui)化剂(ji)，加(jia)入活性添(tian)加(jia)剂(ji)，在(zai)360～370℃下，催(cui)(cui)化脱(tuo)(tuo)(tuo)(tuo)氢和(he)脱(tuo)(tuo)(tuo)(tuo)水，生成(cheng)丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)。　 2.抽提法(fa)　乙(yi)(yi)(yi)(yi)(yi)烯(xi)(xi)(xi)裂解(jie)装置(zhi)副产C4馏分，用(yong)溶剂(ji)抽提法(fa)提取(qu)(qu)(qu)丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)，依采用(yong)的(de)溶剂(ji)不同，可分为乙(yi)(yi)(yi)(yi)(yi)腈(jing)抽提法(fa)和(he)犖，N-二(er)(er)(er)(er)(er)(er)(er)甲(jia)(jia)(jia)基(ji)甲(jia)(jia)(jia)酰(xian)(xian)胺(an)(an)抽提法(fa)。 (1)乙(yi)(yi)(yi)(yi)(yi)腈(jing)抽提法(fa)　以(yi)乙(yi)(yi)(yi)(yi)(yi)腈(jing)为萃(cui)(cui)取(qu)(qu)(qu)剂(ji)。将乙(yi)(yi)(yi)(yi)(yi)烯(xi)(xi)(xi)裂解(jie)装置(zhi)副产的(de)C4馏分送入丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)萃(cui)(cui)取(qu)(qu)(qu)精(jing)(jing)馏塔(ta)(ta)，顶部加(jia)入乙(yi)(yi)(yi)(yi)(yi)腈(jing)，丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)烯(xi)(xi)(xi)及(ji)少(shao)量丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)烷从(cong)塔(ta)(ta)顶排出(chu)；丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)、炔(gui)(gui)烃和(he)乙(yi)(yi)(yi)(yi)(yi)腈(jing)进(jin)入第(di)(di)一解(jie)吸塔(ta)(ta)，乙(yi)(yi)(yi)(yi)(yi)腈(jing)被解(jie)吸出(chu)来(lai)，并返回萃(cui)(cui)取(qu)(qu)(qu)精(jing)(jing)馏塔(ta)(ta)。丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)和(he)炔(gui)(gui)烃进(jin)入第(di)(di)二(er)(er)(er)(er)(er)(er)(er)萃(cui)(cui)取(qu)(qu)(qu)塔(ta)(ta)，塔(ta)(ta)顶加(jia)入乙(yi)(yi)(yi)(yi)(yi)腈(jing)，丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)从(cong)塔(ta)(ta)顶出(chu)来(lai)，进(jin)入水洗塔(ta)(ta)，再经精(jing)(jing)馏脱(tuo)(tuo)(tuo)(tuo)水得聚合级丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)。 (2)N,N-二(er)(er)(er)(er)(er)(er)(er)甲(jia)(jia)(jia)基(ji)甲(jia)(jia)(jia)酰(xian)(xian)胺(an)(an)抽提法(fa)　以(yi)犖，N-二(er)(er)(er)(er)(er)(er)(er)甲(jia)(jia)(jia)基(ji)甲(jia)(jia)(jia)酰(xian)(xian)胺(an)(an)为萃(cui)(cui)取(qu)(qu)(qu)剂(ji)。C4馏分二(er)(er)(er)(er)(er)(er)(er)次(ci)萃(cui)(cui)取(qu)(qu)(qu)，二(er)(er)(er)(er)(er)(er)(er)次(ci)精(jing)(jing)馏，制取(qu)(qu)(qu)合格的(de)丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)产品。第(di)(di)一次(ci)萃(cui)(cui)取(qu)(qu)(qu)脱(tuo)(tuo)(tuo)(tuo)除比丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)难溶于犖，N-二(er)(er)(er)(er)(er)(er)(er)甲(jia)(jia)(jia)基(ji)甲(jia)(jia)(jia)酰(xian)(xian)胺(an)(an)的(de)杂质(zhi)，如丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)烯(xi)(xi)(xi)、丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)烷；第(di)(di)二(er)(er)(er)(er)(er)(er)(er)次(ci)萃(cui)(cui)取(qu)(qu)(qu)脱(tuo)(tuo)(tuo)(tuo)除比丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)易溶于N，N-二(er)(er)(er)(er)(er)(er)(er)甲(jia)(jia)(jia)基(ji)甲(jia)(jia)(jia)酰(xian)(xian)胺(an)(an)的(de)杂质(zhi)，如乙(yi)(yi)(yi)(yi)(yi)烯(xi)(xi)(xi)基(ji)乙(yi)(yi)(yi)(yi)(yi)炔(gui)(gui)。第(di)(di)一次(ci)精(jing)(jing)馏脱(tuo)(tuo)(tuo)(tuo)除比丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)轻的(de)组(zu)分，如甲(jia)(jia)(jia)基(ji)乙(yi)(yi)(yi)(yi)(yi)炔(gui)(gui)；第(di)(di)二(er)(er)(er)(er)(er)(er)(er)次(ci)精(jing)(jing)馏脱(tuo)(tuo)(tuo)(tuo)除比丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)重的(de)组(zu)分，如顺2-丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)烯(xi)(xi)(xi)、1,2-丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)、C5馏分及(ji)高沸点物(wu)，最(zui)后得到(dao)99.5%以(yi)上的(de)1,3-丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)二(er)(er)(er)(er)(er)(er)(er)烯(xi)(xi)(xi)成(cheng)品。 3.由石(shi)油气体大(da)量制备，即(ji)由丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)烯(xi)(xi)(xi)或丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)烯(xi)(xi)(xi)-丁(ding)(ding)(ding)(ding)(ding)(ding)(ding)烷混合物(wu)催(cui)(cui)化脱(tuo)(tuo)(tuo)(tuo)氢，也可通过裂解(jie)石(shi)脑油和(he)轻油直(zhi)接(jie)得到(dao)。