燃煤锅炉烟气除尘脱硫的对策及建议

本文论述了中小型燃煤锅炉烟气除尘脱硫的迫切性,并针对目前造纸行业现状提出了两种经济实用的烟气除尘脱硫方案,分析了其可行性。     

试论燃煤烟气除尘技术的改进

简要地介绍了多管式除尘器和湿式除尘器的使用情况,并指出了改进它们的途径。对我国近10年来电除尘器的改进、研制和使用也作了简要的介绍。认为,对于每一台特定的工业锅炉或工业炉窑,应根据烟气条件、烟尘性质和企业具体情况合理地选择除尘系统,才能收到圆满的除尘效果。     

有机热载体锅炉系统管道安装问题探讨

有机热载体锅炉具有低压力高温度的工作特性,热稳定性好,广泛应用于工业生产。文章通过对法规、标准的学习,对有机热载体锅炉系统管道安装的一些问题进行探讨。     

丝织厂小型燃煤锅炉除尘的改造

经对比分析后，认为小型燃煤锅炉要解决好除尘间题，最有效的方法是结合旋风除尘与水幕除尘于一体，可达到理想的排放标准。     

一起有机热载体炉导热油喷出事故分析

通过一起有机热载体炉的导热油喷出事故,阐述了该起事故的原因,并提出相应的解决措施.     

锅炉烟气除尘脱硫技术及发展趋势

工业生产中一般都会用到锅炉来供应生产中所需的热能,然而大多数锅炉是通过燃煤来运作的,而煤的大量燃烧会排出带有害物质的烟尘,对环境以及对人体健康都会造成危害。所以锅炉烟气除尘脱硫技术一直是科学研究的主要内容之一,如何提高技术的高度,使烟气脱硫除尘工艺越来越高效,从而减少废气的排放,保护我们赖以生存的环境。     

浅析有机热载体的劣化表现及预防

通过对有机热载体成分及类型的基本解析,分析有机热载体性能特点、劣化机理、劣化原因及预防方法等,有效控制有机热载体在使用过程中发生的劣化变质,从而对有机热载体锅炉传热系统安全、稳定、经济运行具有重要意义。     

有机热载体炉在粉洗干盐加工中的应用

有机热载体炉在我国粉洗干盐加工中首次使用。有机热载体———导热油，由泵带动在导热油炉与空气加热器组成的系统中循环，进行热量传递。在系统中被加热的高温空气进入流化干燥床     

燃生物质固硫型煤有机热载体炉节能措施及自动控制

分析了燃生物质固硫型煤有机热载体炉的立式圆形盘管型、卧式管架型、卧式方箱盘管型的结构型式,讨论了有机热载体炉的节能减排措施,研究了空气型、热水型、蒸汽型的烟气余热回收装置的结构形式,探讨了有机热载体炉的自动控制及安全保护,包括检测显示、自动调节、操作控制、信号保护及联锁等。     

燃煤锅炉烟气氨法脱硝实时监测系统

为监测火电厂锅炉烟气氨法脱硝过程中的氨气泄漏情况,利用GSM,Internet和ZigBee等多种技术,设计了一个集采集、报警、查询为一体的监测系统,实现了用无线传感器网络对氨法脱硝系统运行环境进行分布式液氨泄漏监测.该系统能有效提高氨法脱硝现场的安全性,具有低功耗、低单位成本和组网灵活等优点.     

印染厂锅炉烟气余热回收

通过安装省煤器及蒸汽发生器对锅炉烟气热能利用技术进行改造,实现印染行业广泛使用的蒸汽锅炉烟气余热的回收利用.采用该技术节能效果显著,排烟温度由250℃降至140℃,可节约702.37 t标准煤.     

微生物烟气脱硫技术及其研究方向

微生物烟气脱硫 ,是用含有脱硫菌的溶液作循环吸收液、以粉煤灰中Fe2 O3被离子化后产生的铁离子作催化剂和反应介质、以脱除烟气中SO2 的一项新技术 .从能源、酸度、温度、需氧类型等方面综合考虑 ,氧化亚铁硫杆菌、氧化硫硫杆菌、氧化亚铁硫螺菌可作为三层滤料生物滤池脱硫的菌种 .而选育适宜性和稳定性更强、使用寿命更长的高效菌和合适的生化反应器 ,是脱硫菌种研究的趋势 .     

新型玻璃纤维复合滤料在燃煤锅炉烟气治理上的应用探讨

针对我国燃煤锅炉烟气具有高温、高浓度和工况复杂等特点,研发新型滤料以达到高效烟气净化的目的。分析对比新型梯度滤料、梯度覆膜结构玻璃纤维复合滤料与常规滤料的性能差异,试验表明新型滤料技术具有价廉、除尘效率高、易清灰等优点,滤料的使用状况还需工程检验。     

链条锅炉改造探讨

简要介绍了35t/h链条锅炉面临的困境,并针对节能和环保要求提出改造方案,指出脱硫改造的重要性并简要介绍烟气脱硫的方法。     

利用锅炉烟气佘热——提升（造纸）污泥的资源化处理技术

利用烟气余热处理污泥技术将污泥成功地造粒成松散状颗粒。使热烟气与湿污泥的换热面积增加了几十倍,同时还大大减少了污泥球粒在干化过程中的温度梯度和湿度梯度,传热效率有了突破性的提高,使湿污泥迅速吸热干化。干化后的成品污泥颗粒保持了其原有热值的90％以上,可作为辅助燃料,又能使污泥的干化效率达到理想的程度。     

天然气与废气混烧型导热油炉在热定形机中的应用

分析了天然气与废气混烧型燃烧器的结构组成,研究了天然气与废气混烧型导热油炉的结构,讨论了天然气与废气混烧型导热油炉在热定形机中的应用.在化纤织物印染定形工艺生产过程中,定形机的烘房使用导热油循环加热系统供热,并将热定形机排放的含有害物质废气直接输入混烧型导热油炉内焚烧净化处理.采用废气余热回收利用装置,通过热交换器将热...     

喷漆工艺有机废气治理方法浅析

随着国内经济的快速发展,制造业也在蓬勃发展.喷漆工艺产生的有机废气不仅直接污染大气,而且还会产生二次污染,这对大气环境和人体健康有很大的影响.为了保护生态环境,减少大气污染,降低对人体的危害,有必要对喷漆工艺产生的有机废气进行治理.国内目前常用的有机废气处理技术中,成熟且有效适用于喷漆行业的主要有吸附法+燃烧法或者吸附...     

Effects of dietary organic acid and pure botanical supplementation on growth performance and circulating measures of metabolic health in Holstein calves challenged by heat stress

To evaluate the effects of heat stress environmental conditioning and dietary supplementation with organic acid and pure botanicals (OA/PB) on growth in dairy calves, we enrolled 62 bull (noncastrated) and heifer calves in a study with a completely randomized design. Calves were assigned to 1 of 5 groups (n = 11 to 14/group): (1) thermoneutral conditions (TN-Con), (2) HS conditions (HS-Con), (3) thermoneutral conditions and pair-fed to match nutrient intake with HS-Con (TN-PF), (4) HS with low-dose OA/PB [75 mg/kg of body weight (BW); 25% citric acid, 16.7% sorbic acid, 1.7% thymol, 1.0% vanillin, and 55.6% triglyceride; HS-Low], or (5) HS with high-dose OA/PB (150 mg/kg of BW; HS-High). Supplements were delivered as a twice-daily bolus via the esophagus from wk 1 through 13 of life; all calves, including those on the control treatments, received an equivalent amount of triglyceride used for microencapsulation. Calves were raised in TN conditions from birth until weaning. After weaning, calves (62 ± 2 d; 91 ± 10.9 kg of BW) were transported to a new facility and remained in TN conditions [temperature-humidity index (THI): 60 to 69] for a 7-d covariate period. Thereafter, calves remained in TN or were moved to HS conditions (THI: diurnal change 75 to 83 during night and day, respectively) for 19 d. Clinical assessments were performed thrice daily, BW was recorded weekly, and blood was sampled on d 1, 2, 3, 8, 15, and 19. Upon experiment completion, calves from HS-Con and TN-Con were euthanized, and hot carcass and visceral organ weights were recorded. The mixed model included calf as a random effect; treatment, day, hour (when appropriate) as fixed effects, and the interactions of treatment × day and treatment × hour (when appropriate). Rectal and skin temperatures and respiration rates were greater in HS-Con than in TN-Con. During heat stress exposure, dry matter intake (DMI), average daily gain (ADG), and gain to feed (G:F) were lower in HS-Con relative to TN-Con. Comparing HS-Con and TN-PF, ADG and G:F were similar. Plasma fatty acid concentrations were elevated in TN-PF compared with HS-Con and TN-Con. Despite tendencies for increased aspartate aminotransferase, HS conditions did not overtly influence liver and inflammation markers. Liver weights were lower in HS-Con relative to TN-Con. During the first week of heat exposure, DMI was greater for HS-Low relative to HS-Con. Supplementation of OA/PB at low and high levels had a similar G:F to HS-Con. We conclude that reductions in DMI accounted for production losses during HS conditioning and that dietary OA/PB supplementation was not able to improve growth performance in heat-stressed calves.     

天然气热风炉与燃烧器在热定形机中的应用

分析了天然气的燃烧过程,并介绍了天然气燃烧器的结构类型与设计计算.讨论了全自动天然气燃烧器的结构组件和燃气阀门组件,研究了天然气直接式热风炉与间接式热风炉的结构,并比较了套筒式、螺旋板式及管板式间接热风炉的结构特点.探讨了天然气直接式热风炉和间接式热风炉与燃烧器在纺织印染热定形机中的开发应用.