共查询到20条相似文献,搜索用时 15 毫秒
1.
The number of biogas injection plants is increasing. In Germany, the requirements for biogas injection are specified by DVGW G 260 and G 262. The most applied biogas upgrading technologies are the pressure swing adsorption and physical as well as chemical scrubbers. However, these technologies are usually not adapted to the particular injection parameters of a specific location. In this work the influences of pressure, temperature and further parameters are shown for the water and the Genosorb scrubber. For the simulations the software Aspen Plus was applied, and measurements are used for verification. 相似文献
2.
3.
Fouad R. H. Abdeen Maizirwan Mel Mohammed Saedi Jami Sany Izan Ihsan Ahmad Faris Ismail 《中国化学工程学报》2016,24(6):693-702
Significant attention has been given to biogas production, purification and upgrading as a renewable and clean fuel supplement. Biogas is a product of an anaerobic digestion process comprising methane, carbon dioxide, and trace amounts of other gases. Biogas purification removes trace gases in biogas for safe utilisation. Biogas upgrading produces methane-rich biogas by removing bulk carbon dioxide from the gas mixture. Several carbon dioxide removal techniques can be applied for biogas upgrading. However, chemical absorption of carbon dioxide for biogas upgrading is of special significance due to its operation at ambient or near ambient temperature and pressure, thus reducing energy consumption. This paper reviews the chemical absorption of carbon dioxide using amine scrubbing, caustic solvent scrubbing, and amino acid salt solution scrubbing. Each of these tech-niques for biogas upgrading is discussed. The paper concludes that an optimised implementation of the chemical absorption techniques for biogas upgrading requires further research. 相似文献
4.
Biogas upgrading for removing CO2 and other trace components from raw biogas is a necessary step before the biogas to be used as a vehicle fuel or supplied to the natural gas grid. In this work, three technologies for biogas upgrading, i.e., pressured water scrubbing (PWS), monoethanolamine aqueous scrubbing (MAS) and ionic liquid scrubbing (ILS), are studied and assessed in terms of their energy consumption and environmental impacts with the process simulation and green degree method. A non-random-two-liquid and Henry's law property method for a CO2 separation system with ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim][Tf2N]) is established and verified with experimental data. The assessment results indicate that the specific energy consumption of ILS and PWS is almost the same and much less than that of MAS. High purity CO2 product can be obtained by MAS and ILS methods, whereas no pure CO2 is recovered with the PWS. For the environmental aspect, ILS has the highest green degree production value, while MAS and PWS produce serious environmental impacts. 相似文献
5.
6.
Jürgen Kube 《化学工程与技术》2020,43(1):29-38
The mass balances of countercurrent gas permeation modules for the separation of multicomponent gas mixtures are formulated as a boundary value problem, using the ideal gas law and isobaric isothermal stages. The balances are extended for the common three-stage gas permeation process for the upgrading of biogas. The solution is calculated with MATLAB's BVP4C boundary value solver. The process is optimized by means of the FMINCON SQP-algorithm towards lowest power consumption. Parameter variations are conducted, highlighting the impact of product and lean-gas quality setpoints, biogas composition, membrane surface and selectivity, permeate compression, and choice of compressor model on the energetic optimum. 相似文献
7.
Noorlisa Harun Zuraini Hassan Norazwina Zainol Wan Hanisah Wan Ibrahim Haslenda Hashim 《化学工程与技术》2019,42(9):1834-1839
Anaerobic digestion (AD) involves a series of biological processes in which organic material is broken down and transformed into biogas. A simulation model of the AD process in treating food waste to produce biogas was developed using Aspen Plus software. The components list, thermodynamic property package, reaction list, reactor model, and process condition were specified in Aspen Plus. Sensitivity analysis was performed to study the effect of hydraulic retention time and changes in food waste composition on the biogas production. The methane composition in biogas decreased when the hydraulic retention time was increased which is due to the reduction of substrate consumption during the AD process. The process model is able to represent the AD process and provides a good approximation on the production of biogas under various process operating conditions. 相似文献
8.
Aspen Plus在煤焦油复杂组分精馏中的应用 总被引:1,自引:0,他引:1
在制备净化煤焦油沥青的过程中,净化沥青和轻质油组分的精馏分离是关键步骤之一。通过对组分的合理简化,用Aspen Plus对这一复杂组分精馏过程进行模拟,为试验及设计提供参考。 相似文献
9.
10.
采用化工流程模拟软件Aspen Plus建立固体物质溶解度的计算模型,并利用灵敏度分析功能研究不同温度下的固体溶解度。以计算不同温度下KNO3和Na Cl在水中的溶解度为例说明了计算过程,模拟计算结果与文献数据的最大偏差分别1.65%和1.12%,平均相对偏差分别为0.81%和0.69%,吻合良好。研究结果表明本文建立的固体物质的溶解度计算方法是可行的,可为工业生产提供可靠的数据。 相似文献
11.
12.
13.
14.
15.
16.
采用模拟软件Aspen Plus对某厂大型煤化工甲醇四塔精馏过程进行稳态模拟计算和分析,结果表明,应用物性方法 UNIFAC-DMD能有效模拟汽液平衡数据,模拟结果与工厂采集数据吻合良好。进行了常压塔侧线抽提位置分析、回流比对产品各组分浓度影响及精馏塔水力学分析等研究,提供了可行的精馏操作方案。 相似文献
17.
18.
19.
20.
安全阀是压力容器安全保护的最后一道物理保护措施,广泛应用于石油化工企业.安全阀计算工况众多,计算公式容易混淆,为正确选型带来麻烦.简单介绍了Aspen Plus软件Safety Analysis功能在安全阀计算中的应用. 相似文献