Exploration of refining and chemical integration under China’s dual-carbon target

doi:10.16085/j.issn.1000-6613.2022-0225

Abstract

Abstract:

Based on the thinking of the traditional refining and chemical integration, how to use the temperature to strengthen the refining and chemical process was analyzed in a vertical series mode, and the refining and chemical technologies were summarized in a horizontal parallel mindset. Therein, the way of energy supplying by electricity was used to reconstruct the traditional steam cracking technology so that it could achieve a new technical route and the innovative development space for refining and chemical integration under re-electrification. In the meantime, by replacing the fuel furnace with electric energy, the direct steam cracker electrification technology and dry reforming technology could make not only the traditional oil refinery and olefin plant to realize energy conservation, emission reduction and low-carbon transformation, but also the dry gas obtained by the way of electric energy supplying to produce syngas and hydrogen, which could be used in the reduction iron by hydrogen metallurgy to help China’s steel industry decarbonizing, in the methanol production to promote China’s CCUS developing, and also in the green hydrogen of auto industry to support the China’s dual-carbon target achieving.

Key words: direct steam cracker electrification, refining and chemical integration, hydrogen energy, carbon dioxide, CCUS

摘要：

通过对传统炼化一体化流程的思考，本文提出以纵向串联模式分析温度如何强化炼化过程，以横向并联思维归纳炼化工艺。提出通过电供能重构传统的蒸汽裂解技术，获得再电气化下炼化一体化新的技术路线和创新发展空间。文中指出：通过电供能代燃料炉，电烯氢技术及干重整技术不仅使传统的炼油厂和烯烃厂节能减排绿色低碳转型，电供能置换出的干气制合成气及氢用于氢冶金还原铁，二氧化碳捕集、封存及利用（CCUS），甲醇及汽车生产，也使中国钢铁产业同时脱碳，促进中国CCUS及氢能汽车产业发展，支撑中国2030年碳达峰和2060年碳中和目标实现。

关键词: 电烯氢, 炼化一体化, 氢能, 二氧化碳, 二氧化碳捕集、封存及利用

CLC Number:

TE65

ZHOU Hongjun, ZHOU Ying, XU Chunming. Exploration of refining and chemical integration under China’s dual-carbon target[J]. Chemical Industry and Engineering Progress, 2022, 41(4): 2226-2230.

周红军, 周颖, 徐春明. 中国碳达峰碳中和目标下炼化一体化新路径与实践[J]. 化工进展, 2022, 41(4): 2226-2230.

Figures/Tables 7

References 5

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组分	传统数据^［4］			实验数据
组分	C₄LPG 低转化率	C₄LPG 高转化率	柴油	进口丙丁烷（丙烷/丁烷=50/39）	异构后LPG（混合丁烷）（丁烷/丁烯=97/3）	烷基化后 LPG （正丁烷）	东营华联催化柴油	玉门催化柴油
实验条件	—	—	—	裂解温度：850℃ 停留时间：0.35s，水油比：0.4			裂解温度：800℃ 停留时间：0.35s，水油比：0.4
氢气	1.21	1.25	0.49	1.17	1.02	0.97	2.03	1.28
甲烷	24.15	25.42	9.17	13.66	14.13	12.91	25.21	18.77
乙烯	27.65	29.65	21.87	23.73	21.50	29.87	33.87	35.90
乙烷	2.44	2.41	3.95	4.43	2.06	2.80	7.02	6.68
丙烯	15.25	13.31	15.27	18.15	19.20	18.57	19.68	20.86
丙烷	1.02	0.52	0.53	17.69	0.36	0.39	0.77	0.90
丁二烯	3.75	3.99	4.86	2.00	2.16	2.05	2.86	3.98
丁烯	6.68	5.81	5.95	5.11	7.68	2.38	5.84	6.92
丁烷	1.96	0.33	0.12	10.40	27.60	27.22	0.10	0.16
C₅及重组分	—	—	—	3.01	3.79	2.11	2.33	4.12
三烯收率/%	46.65	46.95	42.00	43.88	42.86	50.49	21.61	20.82
单程转化率/%	—	—	—	丙烷：64.51 丁烷：73.36	71.55	72.99	56.41	60.74

组分	传统数据^［4］			实验数据
组分	C₄LPG 低转化率	C₄LPG 高转化率	柴油	进口丙丁烷（丙烷/丁烷=50/39）	异构后LPG（混合丁烷）（丁烷/丁烯=97/3）	烷基化后 LPG （正丁烷）	东营华联催化柴油	玉门催化柴油
实验条件	—	—	—	裂解温度：850℃ 停留时间：0.35s，水油比：0.4			裂解温度：800℃ 停留时间：0.35s，水油比：0.4
氢气	1.21	1.25	0.49	1.17	1.02	0.97	2.03	1.28
甲烷	24.15	25.42	9.17	13.66	14.13	12.91	25.21	18.77
乙烯	27.65	29.65	21.87	23.73	21.50	29.87	33.87	35.90
乙烷	2.44	2.41	3.95	4.43	2.06	2.80	7.02	6.68
丙烯	15.25	13.31	15.27	18.15	19.20	18.57	19.68	20.86
丙烷	1.02	0.52	0.53	17.69	0.36	0.39	0.77	0.90
丁二烯	3.75	3.99	4.86	2.00	2.16	2.05	2.86	3.98
丁烯	6.68	5.81	5.95	5.11	7.68	2.38	5.84	6.92
丁烷	1.96	0.33	0.12	10.40	27.60	27.22	0.10	0.16
C₅及重组分	—	—	—	3.01	3.79	2.11	2.33	4.12
三烯收率/%	46.65	46.95	42.00	43.88	42.86	50.49	21.61	20.82
单程转化率/%	—	—	—	丙烷：64.51 丁烷：73.36	71.55	72.99	56.41	60.74

组分	传统数据^［4］		实验数据
组分	全流程石脑油	轻质石脑油	大庆页岩油	进口高硫轻质原油	进口低硫轻质原油	玉门脱后原油	亚通重整抽余油	河北中捷催化汽油
实验条件	—	—	裂解温度：800℃ 停留时间：0.35s 水油比：0.4	裂解温度：750℃，停留时间：0.35s 水油比：0.4			裂解温度：850℃ 停留时间：0.35s 水油比：0.4	裂解温度：800℃ 停留时间：0.35s 水油比：0.4
氢气	0.91	0.96	0.70	0.83	0.86	0.86	0.98	1.10
甲烷	14.48	16.46	10.02	11.54	12.70	12.21	13.48	16.54
乙烯	28.10	31.11	41.86	28.56	27.69	30.66	25.52	19.85
乙烷	3.35	4.19	4.09	6.06	6.23	6.13	3.21	3.59
丙烯	15.46	17.13	20.32	22.54	21.55	22.94	18.68	14.80
丙烷	0.36	0.53	0.70	1.37	1.39	1.20	0.65	0.51
丁二烯	7.45	5.64	6.83	6.21	5.82	5.73	4.05	4.95
丁烯	4.83	5.28	8.03	10.79	10.59	10.55	9.46	10.62
丁烷	0.75	0.98	0.23	1.38	0.94	0.62	0.14	0.51
C₅及重组分	—	—	7.07	10.39	11.59	8.68	23.56	27.30
三烯收率/%	51.01	53.88	62.49	62.47	58.12	48.68	45.33	31.47
单程转化率/%	—	—	69.01	57.31	55.06	59.33	48.25	39.60

组分	传统数据^［4］		实验数据
组分	全流程石脑油	轻质石脑油	大庆页岩油	进口高硫轻质原油	进口低硫轻质原油	玉门脱后原油	亚通重整抽余油	河北中捷催化汽油
实验条件	—	—	裂解温度：800℃ 停留时间：0.35s 水油比：0.4	裂解温度：750℃，停留时间：0.35s 水油比：0.4			裂解温度：850℃ 停留时间：0.35s 水油比：0.4	裂解温度：800℃ 停留时间：0.35s 水油比：0.4
氢气	0.91	0.96	0.70	0.83	0.86	0.86	0.98	1.10
甲烷	14.48	16.46	10.02	11.54	12.70	12.21	13.48	16.54
乙烯	28.10	31.11	41.86	28.56	27.69	30.66	25.52	19.85
乙烷	3.35	4.19	4.09	6.06	6.23	6.13	3.21	3.59
丙烯	15.46	17.13	20.32	22.54	21.55	22.94	18.68	14.80
丙烷	0.36	0.53	0.70	1.37	1.39	1.20	0.65	0.51
丁二烯	7.45	5.64	6.83	6.21	5.82	5.73	4.05	4.95
丁烯	4.83	5.28	8.03	10.79	10.59	10.55	9.46	10.62
丁烷	0.75	0.98	0.23	1.38	0.94	0.62	0.14	0.51
C₅及重组分	—	—	7.07	10.39	11.59	8.68	23.56	27.30
三烯收率/%	51.01	53.88	62.49	62.47	58.12	48.68	45.33	31.47
单程转化率/%	—	—	69.01	57.31	55.06	59.33	48.25	39.60

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