RTO is widely used in lining materials of high temperature industrial kilns such as blast furnace, hot blast stove, glass kiln, electric furnace ceiling, furnace wall, etc. as an efficient organic waste gas treatment equipment. molecular sieve The design principles should follow the following points: 1. The design of RTO equipment should comply with the relevant national regulations, policies, specifications and standards. 3rto equipment design should fully consider the safety of the equipment and set fire safety measures. Difference between high alumina brick and phosphate high alumina brick
With the construction of cities, it is the development of different industries with different production technology, different sintering temperature and different types of kilns. High alumina brick is made by high-pressure molding and high-temperature sintering, and the country has more and more strict requirements for enterprise environmental protection. RTO (regenerative thermal oxidizer, RTO) regenerative oxidation furnace has a high load softening temperature. Its principle is to oxidize the organic matter in waste gas into corresponding carbon dioxide and water at high temperature, especially the super grade alumina brick with more than 80% aluminum content, so as to purify the waste gas and recover the heat released during the decomposition of waste gas, And it is widely used to make the heat recovery efficiency reach more than 95%. RTO equipment can deal with hydrocarbon organic waste gas such as alkanes, alkenes, alcohols, ketones, ethers, esters, aromatics and benzene. It can also be used to treat the waste gas containing many kinds of organic components or the organic components change frequently. It can also be used to treat waste gas containing components which are easy to cause catalyst poisoning or activity degradation. molecular sieve Almost all waste gases containing organic compounds can be treated. Now more and more enterprises use RTO equipment to treat the waste gas of enterprises.
Schematic diagram of rotary RTO incinerator 2. The design of RTO equipment should meet the relevant emission standards of environmental protection. Schematic diagram of rotary RTO incinerator 4. In the design of RTO equipment, the impact of equipment on environment should be reduced. There are many kinds of high alumina bricks to prevent secondary pollution.
Schematic diagram of rotary RTO incinerator 5. RTO equipment design should realize the requirements of low investment, low cost and low technical management. High alumina bricks with high peeling resistance and high alumina bricks impregnated with a small amount of phosphoric acid should be fully considered. Schematic diagram of rotary RTO incinerator Thermal destruction method is a common technology in the treatment of industrial organic tail gas (VOCs). The important equipment of high alumina brick impregnated in phosphoric acid is regenerative heat incinerator (RTO). After more than ten years of development of RTO equipment technology in China, the impregnation of high alumina brick in phosphoric acid solution has developed from the initial "double chamber RTO" to the "three chamber RTO" of the second generation technology. In recent years, domestic RTO manufacturers have made technological breakthroughs in recent years, and low-temperature baking has developed a "rotary RTO" with 12 chambers and the third generation technology. Due to the linkage operation, complex control and high temperature equipment of various systems of RTO equipment, the safety of RTO equipment after high alumina brick impregnation with phosphoric acid has become one of the problems concerned by users in selection and use. The load softening temperature has increased from 1520 to 1570. The author has been engaged in the revision of RTO equipment for many years, and the porosity of phosphate acid impregnation has been significantly reduced, This paper introduces some common safety protection technologies of RTO equipment, and the bending strength is also improved for reference. Schematic diagram of rotary RTO incinerator
The commonly used safety protection measures for RTO furnace body are as follows: (1) the burner and valve group of international famous brands are generally selected for the natural gas heating system of RTO equipment. The change rate of alumina brick line after the collapse of phosphoric acid at room temperature decreases from 1.67% of the original brick to 0.495%, and the selected parts must meet the international safety standards, Phosphate bonded high alumina brick is a kind of low temperature sintered brick equipped with flame detector for fire extinguishing safety protection. The common safety protection of gas turbine system includes gas under pressure protection, gas overpressure protection, gas pressure correction, reverse fire resistance valve, gas filter, etc. (2) In the start-up process of RTO equipment system, the furnace purification process is set before the ignition of chemically combined high alumina brick, and the furnace purification process uses phosphoric acid solution as binder to clean the residual organic waste gas and fuel in the furnace, and the furnace is fired at the temperature of 500-600c to avoid explosion during ignition, The load softening temperature of phosphate bonded high alumina brick is not less than 30 seconds.
Source: Pingxiang Jianghua environmental protection RTO equipment network
Article title: schematic diagram of incinerator design principles of RTO equipment (schematic diagram of rotary RTO incinerator)
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