requestId:68629af9cfdca1.63395830.
Abstract: The types of dangerous wastes are single, and the production volume is large, but the harmless treatment rate is relatively low today. With the strict national policy trends, the decisive demand for crisis handling has been further increased, and the harmless relocation market has been further released, with a wide range of scenic spots. This paper analyzes the existing incineration and burning technology in terms of relocation consequences, investment and operation capital, and predicts the development trends of future dangerous waste incineration and burning technology.
Dangerous wastes are corrosive, toxic, flammable, reactive, contaminating, etc. Today, there are 479 types of dangerous wastes listed in the National Dangerous Waste List. In 2016, the total value of my country’s risk generation was 69.37 million tons, among which the proportion of resource-based comprehensive application, harmless disposal and storage was 58%, 37% and 5%, and the actual estimate is that it exceeds 100 million tons/year. In 2018, the Ministry of Ecology and Environment’s “Cleaning Operation 2018”; the Ministry of Industry and Information Technology’s Changjiang Economic Development, the comprehensive application of industrial solid waste was investigated; the Maritime Affairs Commission’s crackdown on “foreign waste” policing operations comforted the release of the dangerous market space and caused the temporary demand for dangerous waste treatment.
The treatment methods for domestic hazardous waste include resource-based applications and harmless disposal. Resource-based applications have been relatively stable over the years of development, and the supply and demand basis has reached a balance. Harmless disposal has resulted in a huge gap in production capacity due to accelerated production capacity, long quality approval time, mismatch between quality and demand, and cross-provincial transportation restrictions. Redirecting burning and burning as a traditional harmless disposal technology occupies a major position in the dangerous disposal market. Sugar daddyOther traditional incineration techniques also include fluidized bed burning, fixed bed burning, thermal decomposition burning, etc., which account for a smaller proportion. As a new harmless disposal method, cement co-operation is a new method of disposal. Due to the obvious capital advantages, the share of the Escort market in the dangerous market is gradually increasing. Due to the significant environmental protection and resource utilization advantages, as the technology matures, it is also becoming more and more popular in the dangerous market.
Dangerous1. The components are complicated. How to seek scientific and fair harmless treatment methods is an important problem that needs to be solved urgently in the current environmental protection field. This article describes and analyzes the three main technologies of dangerous waste burning and burning in terms of relocation consequences, investment and operation capital, and continuously transmits voices of the ears of dangerous waste burning and burning: “I am still at the rescue station” “You come to check the future development trends of technology for future development.
1 Reply Sugar daddyReturn to redirecting to redirecting to dangerous waste burning and burning is generally adopted “Sugar babyReturn + Second Flame Room” found in a photo of her ejaculation that she was wearing a Sugar daddy wedding ring structure on her finger. The temperature of the reversal was 800 to 1000℃, and the waste stayed in the carriage for 40 to 75 minutes. When it reached the exit, it turned into high temperature smoke. href=”https://philippines-sugar.net/”>Sugar babyAir and ash. High temperature smoke enters the secondary combustion chamber. Under the influence of excessive air, the process is fully burned. The stay time is >2s, ensuring that trace amounts of organic matter and dioxin are sufficiently differentiated at high temperature. The ash is turned out and returned to the water and cooled into the ash.
Returning and burning agent is generally used for incineration and disposal. The heat receiving pipe and chemical industry of “residual heat boiler + quenching cooling + quenching lime discharge + activated carbon spray + bag debriser + smoke washing”. After the smoke exits the second combustion chamber, the residual heat boiler is in, and the temperature drops from 1100 to 1200℃ to 550℃, and then enters the quench tower. In the quench tower, the foggy water droplets are fogged. daddyEvaporation causes the smoke temperature to drop to 200°C for an instant (usually 0.6s) to 200°C. Because the smoke stays between 2Escort manila00~500°C for less than 1 seconds, it avoids the redecomposition of dioxins. The important thing to evaporate the acidic gas is to remove the acidic gas, and the important thing to spray activated carbon is to adsorb toxic and harmless components.
The dangerous reversion and incineration and decontamination technology is mature, and compared with other technologiesEscort manila, simple return operation, stable operation, convenient control, good task continuity. But in actual operation<a During the process of Escort, problems such as shutdown and emissions overdue due to poor material adaptability and severe slag will still be caused by problems such as shutdown and emissions. Chu Yanxu and others can prevent or perhaps reduce the occurrence of the above-mentioned operational problems by implementing "three-level compatibility" for the incoming and returning dangerous materials. The fair compatibility of the incoming and burning dangerous materials also leads to many hazards such as solid waste, waste liquid and large amounts of waste (directly entering the second combustion chamber) It can realize the joint burning and improve the suitability of the material of the redirection. In addition, for the problems of redirecting the focus and waste material burning, Zhu Xianqi can solve the problem of redirecting the inability to burn and redirecting the redirection by adding a boiler mount device at the tail of the redirection and adding a fair combustion style, but at the same time it also adds the replication and maneuverability of the system; Zhao Xiaoyan optimized the redirection structure, pulled the redirection tail out of the second combustion chamber, and improved the temperature of the redirection tail to solve the problem of internal burning and burning.
The important thing in restricting the application of redirection burning and burning technology is the secondary treatment of flying ash. The Sugar baby flying ash generated by redirection burning accounts for 3% of the risk of waste. 5%, according to the relevant national standards, it is still dangerous and is generally treated with safe landfill. However, due to the increasing number of available land disk resources and the numerous restrictions on the selection of dangerous landfills, it is becoming increasingly difficult to deal with incineration and burning ash in safe landfills. Today, there are also a variety of quantification, harmlessness and resource disposal technologies for burning ash incineration. escort technology, such as curing technology, heavy metal chelation stability treatment technology, melt solidification treatment technology, and resource processing technology for building materials or ceratops. Among them, curing technology and heavy metal chelation stability treatment technology are the most widely used. , but these two technologies still require landfill treatment after the treatment of incineration and burning ash, and there is a risk of heavy metal leaching when environmental reasons change. Therefore, the return incineration and burning disposal technology of dangerous waste is actually reducing quantitative disposal, and harmlessness is not thorough.
The reversal burning and burning removal technology is generally smaller, and is usually 15 to 40t/d. Higher investment capital, construction cycle (2 to 3 years), and long capacity climbing period (1 to 2 years), and long application. Sugar baby also limits its application.
2 Cement removal joint removal
By reforming the existing new dry cement production lines, adding hazardous storage, pre-treatment systems and hazardous investment points, the coordinated disposal of hazardous cement can be achieved. After the dangerous waste is pretreated, the temperature inside the cement is inserted through the addition point. The temperature inside the carriage is 1450℃. The gas stays in the carriage for more than 4 seconds, the material stays for more than 30 minutes, and the gas is mixed and uniform in the two-phase gas solid to ensure that the dangerous waste is burned thoroughly. The cement carton has a erect atmosphere, and the Escort manila can receive acidic gases produced during the incineration of waste materials.
The advantages of cement joint disposal technology are as follows:
(1) Harmless and thorough. The dangerous cement is disposed in concert, and the ash is directly inserted into the cement, and the heavy metal elements are cured in the cement clinker mineral lattice, which can achieve complete harmlessness of dangerous waste and prevent secondary treatment. After the cement clinker is discharged, it goes into the grate cooler. Wit TC:
