浅析脱硫烟气对系统的腐蚀成因及防护措施

简述了湿法烟气脱硫的腐蚀及积水产生的原因,并根据实际工程经验提出了防护措施。通过此措施的应用将使FGD系统运行更加安全、稳定。     

湿法烟气脱硫系统中的低温腐蚀及烟气再热问题

介绍了燃煤电厂烟气脱硫系统中普遍存在的低温腐蚀问题,并结合实例对烟气再热系统的型式以及二次腐蚀问题进行了简要分析。     

连州电厂烟气脱硫系统烟道腐蚀原因探讨

分析了连州电厂石灰石/石膏湿法脱硫系统内烟道的腐蚀原因，并提出了改进措施。     

DS半干法烟气脱硫装置及工程应用

介绍了DS半千法脱硫装置的工艺原理、系统流程、主要脱硫设备及实际脱硫效果。     

湿法烟气脱硫技术及其应用

世界各国开发了数十种行之有效的湿法烟气脱硫技术,文中主要介绍几种脱硫技术的脱硫化学机理及其在我国的应用状况.并就我国脱硫技术存在的问题及今后的发展趋势,提出了推进火电厂脱硫技术国产化的建议.     

电子束湿法烟气脱硫工艺

提出一种电子束湿法烟气脱硫工艺的构思,该工艺由三台立式、湿式设备组成。其中压力式喷雾干燥器既使铵盐溶液干燥、造粒,又使含SO2和NOx的烟气降温、增湿;该烟气被立式冷却辐照塔降湿、增湿和电子束照射,生成铵盐气溶胶微粒,此微粒被筛板式吸收塔分离、清洗成铵盐溶液。本工艺经可行性研究和初步设计显示：脱硫率98％、脱硝率70％、收尘率99％,电子束辐照剂量、循环溶液量和烟气流阻同时降低,流程简单、控制简便、设备少、电耗低、占地小、融产品粒径大。     

一种烟气脱硫装置上用的组合湿烟囱

火电厂的湿法烟气脱硫投资较大,如果取消烟气加热装置GGH,采用湿烟囱排放,脱硫系统的总投资和运行、维护费用较装有烟气加热装置的脱硫系统低得多。 1烟囱选择与设计 山东百年电力发展股份有限公司三期2×220MW机组烟气脱硫运行后,原来为三期脱硫设计的GGH加温设备受到煤质和石灰石成分以及环境的影响,经常出现故障而堵塞,运行一年多以后已经不能使用。而原混凝土烟囱由于没有防腐处理,     

湿法烟气脱硫

文章简要介绍了湿法烟气脱硫技术的基本原理、脱硫类型、工艺流程、脱硫剂和脱硫设备的选用要求，并对湿法烟气脱硫存在的问题及解决进行了探讨．     

浅析锅炉烟气脱硫工艺

浅析当今较为成熟的锅炉烟气脱硫工艺,在国内外的使用简况与评述,介绍国内近来开发研制、应用于220t/h以下锅炉的几种脱硫装置,并提出几点建议供参考。     

大型发动机试验装置的设计研制

大型发动机试验装置是为大型发动机的性能试验设计研制的。大型发动机功率在1千kW～1万kW以上,重量在十几吨一百吨以上;它的体积大、重量吨位大、结构复杂对试验装置的设计要求高,制造难度大;同时它具有输送、升降、导向定位停车及承载能力强等功能。     

大型发动机试验装置的设计研制

大型发动机试验装置是为大型发动机的性能试验设计研制的。大型发动机功率在1千kW～1万kW以上,重量在十几吨一百吨以上;它的体积大、重量吨位大、结构复杂对试验装置的设计要求高,制造难度大;同时它具有输送、升降、导向定位停车及承载能力强等功能。     

浅析电信撬箱体智能监控识别系统的应用

当前,人工智能给人们的生产和生活方式带来革命性变化,油气田开发领域也将陆续进入智能化时代,未来将实现全自动钻井,一些关键的作业将实现远程操控,通过现场智能控制平台将地面智能化和井下智能化组成一个有机整体,通过物联网将现场智能钻井与远程实时智能控制中心构成一个大的有机整体,实现现场+远程的大闭环控制。现有技术中,钻井工程的电力传动、控制、通信等系统撬装化技术日益成熟,为站场的供配电系统、自动控制系统、通信系统的整体技术集成及设备撬装化提供了可行的解决方案。     

Pyrolysis of chlorine contaminated municipal plastic waste: In-situ upgrading of pyrolysis oils by Ni/ZSM-5, Ni/SAPO-11, red mud and Ca(OH)2 containing catalysts

This work is focussing to the thermo-catalytic batch pyrolysis of contaminated real municipal plastic waste using different catalyst mixtures in their different ratios: Ni/ZSM-5, red mud, Ca(OH)₂ and Ni/SAPO-11, red mud, Ca(OH)₂. The effect of the catalysts to the pyrolysis oil properties and the in-situ upgrading (especially the storage, transportation and corrosion stability) of pyrolysis oil was investigated. High concentration of Ni/ZSM-5 and Ni/SAPO-11 zeolites in catalyst mixtures can increase the yield of gases and pyrolysis oil, the concentration of aromatics or the hydrogen content in gases; however the presence of red mud in higher content can further increase the hydrogen concentration. ZSM-5 based catalysts showed higher efficiency in aromatization reactions. An accelerated aging test at 80 °C till 1 week was performed to investigate the storage and transportation stability of pyrolysis oils. Only slight increase was found in the density and viscosity, on the other hand there was a bit greater increase using SAPO-11 based catalysts than ZSM-5. The change in the olefin content was followed via bromine number and FTIR spectra of pyrolysis oil, which resulted ～3% and ～4% decreasing using Ni/ZSM-5 and Ni/SAPO-11 containing catalyst mixtures. Regarding acidic components, they significantly increased by aging time, while the high red mud and/or Ca(OH)₂ in catalyst mixtures had notable benefit, because they can drastically decrease the concentration of chlorinated compounds, which led to less weight loss during corrosion test using copper plate till 60 days at 20 °C.     

Evaluation of ground energy storage assisted electric vehicle DC fast charger for demand charge reduction and providing demand response

In 2012 there was approximately 2400 electric vehicle DC Fast Charging stations sold globally. According to Pike Research (Jerram and Gartner, 2012), it is anticipated that by 2020 there will be approximately 460,000 of them installed worldwide. A typical public DC fast charger delivers a maximum power output of 50 kW which allows a typical passenger vehicle to be 80% charged in 10–15 min, compared with 6–8 h for a 6.6 kW AC level 2 charging unit. While DC fast chargers offer users the convenience of being able to rapidly charge their vehicle, the unit's high power demand has the potential to put sudden strain on the electricity network, and incur significant demand charges.Depending on the utility rate structure, a DC fast charger can experience annual demand charges of several thousand dollars. Therefore in these cases there is an opportunity to mitigate or even avoid the demand charges incurred by coupling the unit with an appropriately sized energy storage system and coordinating the way in which it integrates. This paper explores the technical and economical suitability of coupling a ground energy storage system with a DC fast charge unit for mitigation or avoidance of demand charges and lessening the impact on the local electricity network. This paper also discusses the concept of having the system participate in demand response programs in order to provide grid support and to further improve the economic suitability of an energy storage system.     

Preparation and improvement of nickel catalyst supported ordered mesoporous spherical silica for thermocatalytic decomposition of methane

The thermocatalytic alteration of CH₄ into highly pure hydrogen and filaments of carbon was investigated on a series of Ni-catalysts with various contents (25, 40, 55, and 70 wt%) supported mesoporous spherical SiO₂. The silica with ordered structure and high specific surface area (1136 m²/g) was synthesized using the Stöber technique with TEOS as a silica precursor and CTAB as the template in a simple synthesis system of aqueous-phase. This technique led to the preparation of mesoporous spherical silica. The prepared samples were characterized using BET, TPR, XRD, TPO, and SEM analyses. The prepared catalysts with different nickel loading showed the BET surface area ranging from 225.0 to 725.7 m²/g. These results indicated that an increase in nickel content decreases the surface area and leads to a subsequent collapse of a pore structure. SEM analysis confirmed a spherical nanostructure of catalysts and revealed that with the increase in loading of Ni, the particle size enlarged, because of the agglomeration of the particles. The results implied that the high methane conversion of 54% obtained over the 55 wt% Ni/SiO₂ at 575 °C and this sample had higher stability at lower reaction temperature than the other prepared catalysts, slowly deactivation was observed for this catalyst at a period of 300 min of time on stream.