共查询到19条相似文献,搜索用时 140 毫秒
1.
2.
3.
大型煤制甲醇的气化和合成工艺选择 总被引:8,自引:0,他引:8
阐述了大型煤制甲醇装置中煤气化和甲醇合成的工艺路线选择。对比了固定床、流化床和气流床三种气化工艺,得出:大型煤制甲醇的煤气化宜选气流床气化技术;对比了干粉煤气化和水煤浆气化两种流化床工艺,得出:前者优于后者。并以固定床的甲醇合成为例,介绍了串塔合成流程和双级合成流程以及几种大型甲醇合成塔的选用。 相似文献
4.
5.
6.
7.
8.
9.
《煤炭加工与综合利用》2017,(7)
介绍了我国高硫煤中硫的分布规律,论述了高硫煤的脱硫原理和方法,分析了高硫煤的清洁利用发展方向,如用于航天炉粉煤加压气化等先进的煤气化技术、大型煤制甲醇合成汽油、高硫煤制烯烃项目、高硫煤洁净气化发电技术、在固定床造气炉中掺烧高硫煤、利用高硫煤与煤层气联合制甲醇等。 相似文献
10.
《化工自动化及仪表》2017,(2)
正2016年12月27日,延长中煤榆能化公司甲醇气化装置改造应用煤-油共气化制合成气技术再获新进展,该装置B套气化炉一次开车成功,产出的合格合成气顺利并入了甲醇合成系统,标志着煤-油共气化制合成气技术工业规模化应用得到充分验证。煤-油共气化制合成气技术由榆能化公司和西北化工研究院共同开发,应用该技术改造的甲醇气化装 相似文献
11.
A biomass‐based methanol production process was investigated. The process consists of a biomass gasifier, steam reformer, and methanol synthesis reactor as the main units. Reactors were simulated by applying the kinetic models previously developed and the process was analyzed based on the simulation results. The key parameters, the equivalence ratio in biomass gasification, the temperature in steam reforming, and the recycle of hydrogen in methanol synthesis were identified. These parameters affect the methanol production. The process analysis indicates that the optimal combinations of the parameters can greatly enhance the methanol production and the thermodynamic efficiency. Finally, the elemental analysis for carbon and hydrogen along the process was carried out. 相似文献
12.
天然气路线合成乙二醇新技术 总被引:6,自引:0,他引:6
综合分析了采用天然气为原料合成乙二醇(EG)的工艺新技术,其中甲醇乙烯法工艺技术成熟,具备建设大规模工业装置的技术条件,合成气草酸酯法及甲醛羰基化法尚有待进一步提高技术经济性,其它路线仍存在重大技术难点。 相似文献
13.
回顾了新型煤化工技术路线,指出煤制甲醇及下游产品、煤制油、以及以煤气化为龙头的合成氨是我国洁净煤利用技术的主要发展方向。 相似文献
14.
15.
焦炉气制甲醇方案的比较与选择 总被引:1,自引:0,他引:1
对催化纯氧转化和无催化纯氧转化2种以焦炉气转化制甲醇合成气的方法从工艺流程、过程特点、关键技术和主要设备等方面进行了阐述和比较,结果表明,目前应先选用催化纯氧转化法,待烧嘴问题解决后,则应优先选用无催化纯氧转化制甲醇合成气。 相似文献
16.
介绍了双塔并联式甲醇合成工艺在公司240kt/a甲醇装置的应用,以及该工艺的流程、主要设备、工艺技术特点,推广应用前景。 相似文献
17.
18.
介绍了甲醇合成回路流程及MK-121型甲醇合成催化剂的升温还原情况。从出水量、耗氢情况来看,催化剂还原得非常彻底;另外,在催化剂还原过程中,循环量、甲醇合成塔进出口气体温度、顶部绝热层温度、进口H_2含量、系统压力等指标都非常平稳。实际运行情况证明,该催化剂具有较高的转化率、选择性、活性和稳定性。 相似文献
19.
This work presents application of palladium-based membranes in a conventional single-type methanol reactor. A novel reactor configuration with hydrogen-permselective Pd and Pd–Ag membrane are proposed. In this configuration the reacting synthesis gas is fed to the shell side of reactor while the high pressure product is routed from recycle stream through tubes of the reactor in a co-current mode with reacting gas. The reacting gas is cooled simultaneously with recycle gas in tube and saturated water in outer shell. The permselective palladium layer on inner tube allows hydrogen to penetrate from the tube side to the reaction side. In this work, the results of two types of novel membrane reactors are compared with a conventional methanol synthesis reactor at identical process conditions. Also the effect of key parameters such as membrane thickness, reaction and tube side pressure, ratio of tube side flow rate to reaction side flow rate on performance of reactor are investigated. The steady-state and quasi-steady-state simulations results show that there are favorable profiles of temperature and methanol mole fraction along the reactor in proposed reactor relative to conventional reactor system. Therefore using this novel configuration in industrial single-type methanol reactor improves methanol production rate. 相似文献