With the further economic development in our country, more and more hazardous wastes have been produced in industrial production, which have a fatal and large-scale impact on the surrounding environment. Therefore, the treatment and disposal of hazardous waste has drawn more and more attention from all walks of life both at home and abroad. At present, the incineration technology of hazardous wastes has increasingly become one of the main treatment technologies in our country. It has the advantages of stable treatment efficiency, high efficiency and good capacity reduction. It is widely used in today's economically developed countries. Compared with developed countries in Europe, the United States and Japan, the overall technology of hazardous waste incineration in our country at this stage is still very low. Especially in the aspect of recycling heat and energy incineration, the means is simple and the equipment is shabby, resulting in a lot of waste of resources. With the continuous expansion of China's hazardous waste incineration scale, small-scale incineration equipment of 5 tons and 10 tons has been developed to large and medium-scale hazardous waste incineration system equipment of 30 tons, 50 tons or even 100 tons, and waste of thermal energy resources The situation is also more and more highlighted. The main domestic use of air-cooled or water-cooled form, a large number of heat generated by incineration cooling after the discharge, not only a waste of heat but also increased water consumption and electricity consumption, which has a very significant technical gap with foreign countries. Therefore, research and development of waste heat incineration waste heat recovery cascade utilization technology for energy recovery, reduce energy consumption is of great significance. First, waste heat boiler technology research Due to the combustion of hazardous waste, it can produce a large amount of flue gas at 1100 ℃. Because of the large amount of corrosive gas and soot in the flue gas, it can not be used directly. Therefore, it is necessary to exchange heat through the waste heat boiler, Turn into saturated steam for utilization. Conventional waste heat boilers using water convection heat exchanger waste heat boiler, due to the particularity of hazardous waste incineration flue gas, often prone to fouling and corrosion problems, resulting in the shutdown. Waste heat boiler with independent research and development of single-drum membrane wall waste heat boiler, this type of waste heat boiler is the biggest advantage of radiation heat transfer, no convective heat transfer surface, so the boiler body and flue dust does not occur within the block , Without cleaning ash and flue gas resistance, continuous operation for a long time. At the same time set waste heat expansion boiler expansion period, regular sewage. The flue gas generated by incineration enters into the waste heat boiler through the flue gas duct of the second combustion chamber and flows in the space composed by the membrane wall of the waste heat boiler. The boiler water is in the pipe. Longitudinal erosion of the flue gas near the membrane wall, low flue gas temperature, high temperature flue gas flowing in the middle of the channel to low temperature flue gas heat transfer to radiation heat transfer, convection heat transfer a small amount. This kind of structure boiler is the only waste heat boiler which does not need to shut down the ash and has the longest running time. It is not easy to have low temperature or high temperature corrosion in the hazardous waste incineration system. The waste heat boiler is equipped with sub-cylinders, which can supply steam to multiple steam units at the same time to realize the uniformity and stability of steam distribution. It is the basis of cascade utilization to ensure the recovery of steam waste heat. Second, quench tower technology research According to the requirements of the national standard, the flue gas heat utilization of the waste heat boiler can only reach 500 ℃. The flue gas must be quenched in the quenching tower at 500 ℃ to 200 ℃ to reduce the re-synthesis of two VA compounds. Flue gas at the outlet of the waste heat boiler of 500 ℃ will enter the quench tower. The quench tower is a self-developed integrated quench tower. Water mist is sprayed into the tower through the double-fluid spray gun. The high-temperature flue gas is in direct contact with the atomized spray water mist So that the flue gas evaporates and evaporates in contact with the water mist within 1 second. The rapid exotherm of the flue gas is reduced from 500 ° C. to below 200 ° C. by heat exchange, and this process can effectively avoid the re-synthesis of the two VA compounds. At the same time, by controlling the temperature of the flue gas in the quench tower, the flow rate and pressure of the compressed air and the spray liquid, the liquid flow to the spray gun is controlled to ensure the stability of the outlet temperature of the quench tower. When quenching can also add lye, at the same time play the effect of deacidification, so you can take into account the role of quench tower, when the follow-up dry or wet deacidification system is faulty or inefficient, you can join in the quench water Lye, played the role of semi-dry deacidification, deacidification system as an effective backup. Cabinet Tongue Cam Lock,Advertising Box Lock,Outdoor Cam Lock,Furniture Lock Guangdong Haitan electric cabinet lock Co., Ltd , https://www.htcabinetlock.com