Flame arrester prevents burning of biomass boiler cloth bag dust collector阅读：19715 更新时间：2017-12-09 10:29 Source: Jiangsu Yancheng Tiancheng Environmental Protection Equipment Co., Ltd. Read: 19715 Updated: 2017-12-09 10:29
Flame arrester prevents burning of biomass boiler cloth bag dust collector
The bag in the boiler bag filter is an important part of its dust removal. If the bag fails, the entire dust removal system will not work. A phenomenon that easily occurs when the bag filter is in use is the burning of the bag. We summarize the reasons for this phenomenon in order to find a solution.
The cause of the burnt of the dust collector bag due to excessive temperature is mainly due to the insufficient thickness of the initial layer on the surface of the dust collector bag and the excessively high flue gas temperature. If the temperature of the flue gas processed by the dust collector for a long time exceeds the working conditions of the bag, it is easy to cause the dust bag to harden and shrink, or melt to produce a hole. If the thickness of the initial layer is not enough, Mars in the flue gas flows in, or the dust generates heat, which may also cause holes in the dust bag. The burning of the dust bag is mainly reflected in the new dust bag on line. Because pre-coating is not performed after online replacement, high-temperature flue gas carries Mars directly into contact with the bag, which can easily cause the dust bag to be damaged. Burn prevention measures: Ensure the initial layer thickness on the surface of the dust bag. 3 、＃ 4 炉的控制标准不高于 180℃ ）。 Ensure that the exhaust temperature is not over-temperature ( the control standard of # 3 , # 4 furnace is not higher than 180 ℃ ).
In fact, it goes without saying that it is not difficult to imagine that as a textile material bag, the damage caused by high temperature is unspeakable. However, there are many cases where the working environment of the dust removal equipment is facing the threat of high temperature, which is also inevitable. * 不愿见到的现象，损害也是不可挽回的。 Especially in some working environments containing many flammable substances, such as coal kiln operations, due to the adsorption of fine dust, the surface of the bag is covered with a layer of fine coal powder. The addition of pulverized coal under the action of high temperature can easily cause the burning of the bag. This is also a phenomenon we do not want to see, and the damage is irreparable.
There is also the damage to the dust bag caused by Mars during the operation. In many operating environments, there will be a lot of Mars splashing behavior, and these damage to the bag are fatal, because it is easy to cause the bag to break. In particular, the damage is very large for cloth bags with relatively thin materials. From this point of view, the damage caused by the high temperature to the dust bag is very large.
It is easy to understand the reason for burning the bag. 1. First check the material of the dust bag used to see if it is burnt due to improper selection of the bag? 260 摄氏度以上时滤料仅适用于 200 度一下的烟气。 When selecting a bag for a boiler bag filter, a high temperature resistant dust bag is generally used. The bearing capacity of the filter bag due to the temperature rise caused by the system must be considered. For example , the filter material is only suitable for 200 degrees when the temperature is above 260 degrees Celsius. Smoke.
“ 预涂灰 ” 工艺，减小其附着能力。 2. Check the main components of the dust removal flue gas, and check if there are oily particles, because it will adhere to the surface of the dust removal bag. When it adheres to a certain level, it will not only affect the dust removal effect, but also may pass when the high temperature flue gas passes. Ignite the filter bag. In this case, you can consider using the " pre-coating " process to reduce its adhesion. 当锅炉排烟温度过高时，试调整进入除尘器的风量的大小，或者采取再进风管道庄热电耦，或者装冷风阀等，温度过高冷风阀打开降低烟气温度，应该可降 低烟气温度，减少烧掉布袋的机会 , 一般情况下烟气温度不大于 180 度时为常状态，当超过 180 度，就应该选用电除尘器。 3. When the exhaust temperature of the boiler is too high, try to adjust the amount of air entering the dust collector, or take the thermocouple of the air inlet pipe, or install a cold air valve. If the temperature is too high, the cold air valve is opened to reduce the flue gas temperature. Lower the temperature of the flue gas and reduce the chance of burning off the bag . Generally , it is the normal state when the temperature of the flue gas is not more than 180 degrees. When it exceeds 180 degrees, an electric dust collector should be used.
When talking about the topic of burning cloth bags, it is necessary to mention the flame arrester. Many customers will install cyclones in front of the cloth bags. It is true that although cyclones can effectively prevent some Mars from entering the dust collector pipe, the cooling effect is not good. Therefore, a flame arrester is installed before the bag dust collector. This device can effectively prevent Mars, dead ash, and open flames from entering the pipeline with the fan, and can further trigger
“ 安装阻火器是防止锅炉布袋除尘器烧布袋糊布袋的有效措施之一 ”详情，了解更多内容咨询, 技术专家 (15005106507)简介: 从事大气污染控制等方面的设计、设备制造、工程总承包等方面工作二十多年。 The above is a detailed introduction for you. " Installing a flame arrester is one of the effective measures to prevent the boiler bag dust collector from burning the cloth bag. " For more information, consult the technical expert (15005106507). Introduction: Design for air pollution control and other aspects. , Equipment manufacturing, engineering general contracting and so on for more than 20 years. He has 20 national patents. He has hosted more than 20 large and medium-sized environmental protection project designs, and has hosted 2 large-scale environmental protection engineering general contracting projects, involving nearly 800 million yuan in engineering investment. He is one of the main persons in charge of (electricity conversion bag) construction. Rich construction organization and management experience, the first domestic electrostatic precipitator changed to a bag type dust collector with a total design plan of 1.6 million cubic meters per hour. 75 tons / hour boiler bag dust removal and desulfurization design for Xinghuo Thermal Power Plant; November 2005 Design of the world's first Teijin Mihara Office's first 65T / H high-temperature high-pressure circulating fluidized bed boiler using coal, old tires and a small amount of products as mixed fuel (Coal, sawdust, and old tire mixed fuel) Bag-type dust collector, 240T / H electric bag composite dust collector and desulfurization passed the review by Japanese experts, and the export dust concentration was ≤20 mg / Nm3. Shanxi Zuoquan Xinxing Smelter's silicon smelting electric furnace flue gas purification and dust removal. In 2004, Xi'an Tai Coking Plant 4000M2 to 6000M2 large-scale fire-resistant explosion-proof pulse dust collector was designed to remove dust in coke oven. Chongqing Taiji Group Pharmaceutical Factory 20t / h-75t / h Bag-type dust removal and desulfurization system for coal-fired boilers. The main design of the 660000 m3 / h electric bag composite dust collector of the first sintering plant of Jinan Iron and Steel Co., Ltd., designed in 2005 the large-scale fire-proof and explosion-proof pulse dust removal of the Shandong Jiangquan Group Linyi Yunhua Coking Plant. The overall design of the filter, the overall design of the 6000M2 large-scale fire resistance and explosion-proof pulse precipitator of Xuzhou Tengda Coking Co., Ltd. in 2006, the overall design of the 6000M2 large-scale fire resistance and explosion-proof pulse precipitator of Xuzhou Liyuan Coking Co., Ltd. in 2006, Henan Zhongfu Industrial Co., Ltd. Co., Ltd. 125,000 tons of electrolytic flue gas purification system, 15 square meters and 25 square meters of electrostatic precipitator in Hai Gaoling Technology, Northwest Guangxi Province, 100 square meters and 50 square meters of electrostatic precipitator in Heilongjiang Shuangyashan Cement Plant, Jiangsu Sheyang Thermal Power Co., Ltd. 88 square meters of electrostatic precipitator, 75t / h coal-fired boiler flue gas electric bag composite dust removal and desulfurization system project of Henan Ruzhou Julong Industrial Co., Ltd .; Liangang Group Rolled steel plastic burned plate filter type dust collector, Germany WACKER Chemical Company fumed silica powder recovery-plastic burned plate filter type dust collector, Shandong Xinyue Chemical Co., Ltd. 420t / h limestone-gypsum process flue gas desulfurization project; Xinjiang Run Jiecaneng Energy Co., Ltd. 2 ¡Á 240t / h limestone-gypsum process flue gas desulfurization project; Jiangxi Wenli Chemical Co., Ltd. 2 ¡Á 130t / h limestone-gypsum process flue gas desulfurization project; Hechi Chemical Group Co., Ltd. 3 ¡Á 75t / h Limestone-gypsum process flue gas desulfurization project; Hebei Wenfeng Iron and Steel Co., Ltd. 200㎡ sintering head limestone-gypsum process flue gas desulfurization project; Zhuzhou Smelting Co., Ltd. 12000Nm / h 3 drying kiln dual-alkali desulfurization process; Shanxi Wenfeng Coking Co., Ltd. 1 ¡Á 130t / h double alkali desulfurization process; Shaanxi Fugu Xifeng Activated Carbon Company 1 ¡Á 80t / h double alkali desulfurization process; Shanxi Liulin Shenze Aluminum Co., Ltd. 1 ¡Á 130t / h double alkali desulfurization process ; Henan Sanmenxia Thermal Power Co., Ltd. 2 ¡Á 240t / h semi-dry desulfurization process; Luzhou Thermal Power 130t / h unit denitrification SCR project, Zhangye Thermal Power 2 ¡Á 75t / h unit denitrification SCR project, Huayin Thermal Power 2 ¡Á 75t / h unit denitrification SNCR Engineering, Bijie Thermal Power Plant 2 . ¡Á 130t / h unit denitration SNCR, Shaoxing Glass Products Factory 600T / D denitration SCR, Shandong Youjia Energy Thermal Co., Ltd. 1 ¡Á 40t / h pulverized coal boiler flue gas ultra-low emission project SNCR + SCR combined denitration process Company 2500T / D rotary kiln SNCR flue gas denitrification; Tangshan Longfeng Cement Co., Ltd. 2500T / D rotary kiln SNCR flue gas denitrification; Zhejiang Sanshi Cement Co., Ltd. 2500T / D rotary kiln SNCR flue gas denitrification; Yunnan Jiangchuan Cuifeng Cement Co., Ltd. 2500T / D rotary kiln SNCR flue gas denitrification. Dongfang Hope Sanmenxia Thermal Power Co., Ltd. 2 ¡Á 240t / h boiler SNCR flue gas denitrification; Dongying Xishui Thermal Power Co., Ltd. 2 ¡Á 240t / h boiler SCR flue gas denitrification; Shanxi Liulin Shenze Aluminum Co., Ltd. 3 ¡Á 130t / h boiler SNCR flue gas denitrification; Xinjiang Runjie Caneng Energy Co., Ltd. 2 ¡Á 240t / h boiler SCR flue gas denitrification; Qingdao Mingyue Seaweed Group Co., Ltd. 1 ¡Á 75t / h boiler SNCR flue gas denitrification Etc.