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1、null null null s null null催化装置乙醇胺再生塔底重沸器腐蚀失效原因分析 t 1,S 2, l 1,b null 1, S 2, 1( 1. S F z K , null 266071; 2. S F v F K 3 , null 266043)K null 1 :对某石化公司催化装置乙醇胺再生塔底重沸器的腐蚀失效原因进行了分析,根据外观检查a材料成分分析a微观形貌观察和分析a腐蚀产物成分分析及工艺状况和设备检维修调研结果的判定,重沸器管束腐蚀失效主要是由于原料中的H 2 S, SO2酸性物质引起的孔蚀和胺液氧化降解所致,最后根据失效原因提出了改进措施和建议b1 o M
2、 :再生塔;重沸器; 腐蚀; N -甲基二乙醇胺溶液 m s | : TQ051; TQ050. 9null null D S M : Bnull null c I | : 1001- 4837( 2010) 06- 0059- 06do:i 10. 3969 / .j issn. 1001- 4837. 2010. 06. 012CorrosionFailureAnalysisofA Reboiler ofDiethanolamineRegenerationTowerXU Shu- jian1, FANMing- xin2, LIU Xiao- hui1,HANLei1, LIUGuo- l
3、iang2, CHAIYong- xin1( 1. SINOPEC Safety Engineering Institu te, Q ingdao 266071, China; 2. SINOPEC Q ingdao Petrochem icalCo. , Ltd. , Q ingdao 266043, Ch ina)Abstract: The corrosion failure causes of a reboiler of the diethanolam ine regeneration tower in a certainrefinery was investigated. From t
4、he results of spot inspection, element analysis of the materials, the obnullservation and analysis ofm icro- morphology, the ingred ients analysis of the corrosion production, and theresearches of process cond itions and equipm entm ain tenance, it was concluded that the corrosion failureof reboiler
5、 tubes ismain ly caused by the p itting of the acid icmaterialsH2 S and SO2 of raw materia,l andthe degradation ofN - methyl d iethano lam ine solutions. F inally, the correspondingm easures and suggesnulltions were gived according to the above resu lts.Keywords: regeneration tower; reboiler; corros
6、ion; N- methyl d iethano lam ine solution1null A 3 d # m e F b ; i 20% 25% N -J = Y ? (MDEA) A T l 4 b V b aA F a J ; l l H 2 S A , A A ( E3202, E3203) , 3 ( T3203)= 3 , 3 d m 1 U bnull59nullm 1null Y ? 4 3 d 3 m ( E3205) h 5 T T , | : BJS1300- 2. 5- 590- 6 /19 - 4, m ! ? bW , # P H q V 1 U b m 5 20
7、06M 4 P ,2008M 6 5 6 , 2009M 6 T H $ , ? b 3 , P H ? C 5 K b 3 , E N K C Q ? 3 , m 5 K r y s bV 1null m # P H q H q ( ) (M Pa)T 16M nR /0C r18N i10T iY ? (= c H 2 S CO 2 )122 125 0. 25 0C r18N i10T i 140 0. 252null K 4 _ C 4 _ ? C , m 5 V K C A V C 2 + , m 2( a) U ; 5 V C T , ? C K C , m 2( b) U ;/
8、5 V C K ,V x B , m 2( c) U ; K , K m 2( d) U b k b m 5 K r y ,E Y # Q ? 3 ,i 4 M n , N ,L | 2 K ,i | B / K 5 S 5 ,V _ Z S B s b | 5 H 4 5 = V + K C b( a) null 5 8 K ( b)null 5 K ( c) null / 5 K ( d) null / 5 K K m 2null m 5 K null60nullCPVTnull null null null null null null null null b Y ? 3 m K r y
9、 s null null null null null null null null null null Vol27nullNo6 20103null _ 3. 1null 管束材质成分分析 L z T X L ; s s N , | X- M ET3000+ , s s , T n V 2bs V 5 1 0Cr18N i10T iM bV 2null 5 s (% ) T i V Cr Mn Fe Co N i Cu Nb M o WL 0. 33 0. 04 16. 87 1. 38 71. 00 0. 46 9. 76 0. 05 0. 01 0. 00 0. 010. 31 0. 04 16. 72 1. 34 71. 22 0. 43 9. 79 0. 00 0. 02 0. 00 0. 03S 5 ! C 0. 7 17 19 # 2. 0 8 11 3. 2null 微观形貌观察分析 M A 5 K | i 4 4 s , m 3 U b T V , 5 K V # K d ( ? C 4 b K V 0 , K d K b( a) null ( M A v )( b) null bv ( M A v )( c)null ( v )( d) null bv ( v )m 3null 5 K 4 3. 3null 腐蚀产物成分分析| 5 K s Y
