Smelting, forging, chemical special gas generator

      

Your trusted mechanical expert - China Yuxi Machinery Technology Co., Ltd.    

        Energy is the material basis for human survival and development. Most of the world today uses primary energy, and fossil fuels (coal, oil, and natural gas) are mainly used. As we all know, fossil energy sources are non-renewable energy sources, and they consume CO2 , SO2, and ash at the same time . According to the degree of uncleanliness, rankings of fossil energy are: coal, oil and natural gas. On the consumption structure of energy [10], our country and the rest of the world have developed a large gap, according to the "August 2000 China's energy development strategy and" "Energy Technology Engineering during" 15, the world's primary energy consumption, coal Only accounting for 26.3%, while China's coal accounted for 72.9% ; world consumption of oil and natural gas accounted for 40.0 and 23.8% respectively ; while China's consumption was only 22.5 and 2.0% respectively . According to experts' predictions, the coal-based pattern of primary energy consumption in China is difficult to change for a long period of time. It is estimated that by the middle of this century, the proportion of coal consumption will remain at more than 50% .
In recent years, international and domestic oil prices soaring international crude oil futures prices quarter of 2005 has exceeded $ 60 / bbl. At present, the prices of high-priced liquefied petroleum gas and natural gas remain high, and the locality of gas sources is very large. There are major problems in supply difficulty and stability. These unfavorable factors have led to a series of energy-consuming industries (such as glass, ceramics, metallurgy, machinery, building materials, and refractories, etc.) that have turned their attention to the relatively low-cost coal resources that occupy a significant position in China's energy structure.
Coal as a direct fuel has its unfavorable factors. First of all, direct use of coal has low thermal efficiency. Second, direct use of coal smoke causes serious air pollution. At present, local governments at all levels have formulated strict environmental protection policies. The direct coal-fired flue gas index has been difficult to meet the environmental protection standards, and many cities have expressly restricted the " raw coal burning . " Under this situation, the clean burning of coal has become more and more concerned and fueled by fuel-consuming companies.
Generally speaking, the clean combustion technology of coal can be broadly divided into the following five parts: coal pre-combustion technology, coal combustion technology, coal post-combustion technology, coal conversion technology and coal bed methane utilization and coal-based waste treatment and Use technology. Among them, pre-firing technologies for coal include coal preparation, coal briquette, and coal-water slurry technologies; technologies for combustion include low-polluting combustion, sulfur-fixed combustion, and fluidized-bed combustion technologies; post-combustion technologies include flue gas purification and ash treatment technologies. Coal conversion technologies include coal gasification combined cycle power generation, coal gasification, underground coal gasification, coal liquefaction, fuel cell and magnetic fluid power generation technologies; coal bed methane utilization and coal waste treatment and utilization technologies have coal bed methane resource development Utilization, utilization of coal slime, utilization of gangue, utilization of slag, pollution control technology of related plants, CO2 fixation and utilization technology, etc.
At present, the research and development of coal's clean combustion technology has entered a new historical period. Many of these researchers have conducted effective research and development on coal conversion technologies and have obtained valuable results. Especially for coal gasification technology, many researchers have done a lot of work in various aspects such as the selection of coal, the simulation and optimization of the process, and the design and optimization of the equipment. Now the gasification of coal can generally be divided into three types: fixed bed, fluidized bed, and entrained bed. In China, it is a fixed bed gasification process. The fixed-bed gasification process at atmospheric pressure has advantages such as low use of raw materials, low investment, and low operating costs. The gas produced by the fixed-bed gasification process has been obtained in various furnaces in the machinery and metallurgical industries and in various furnaces in the building materials industry. Wide range of applications. Technical Support: China Yu Hao · Shanghai Huang Hao Machinery Technology Co., Ltd. · Department of Energy · Mr. Huang

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Fixed bed coal gasification technology in China has more than 50 years of history, back in the early 1950s, our country has introduced a series of former Soviet Union for some type gas furnace, then China has the digestion and absorption of these on the basis of a number of independent research One-stage gas generator. With the development of China's gas industry and the increasing environmental protection requirements, the two-stage gasifier has only entered a new stage of application since the late 1980s in China . For the research of gas furnaces, apart from a few research institutes (such as the Beijing Planning and Design Institute of the Ministry of Light Industry and the Design and Research Institute of the Ministry of Machinery, etc.), which have been studied in depth, few technical forces have participated in the research and related gas furnaces. Technical forces such as equipment manufacturing and process optimization are quite weak, making the development of gas furnace technology difficult.
In view of the application of gas stoves in China, the hot gas station of gas furnaces plays a decisive role. Most of the gas stations in the industries of machinery, metallurgy, fire-resisting, and ceramics use gasifiers in one-stage gasifier gasifiers to gasify bituminous coal. The station is seriously affected by tar blocking the pipeline. The mid-1990s, some manufacturers began to transform their period of hot furnace gas station to gas station two furnace heat to solve the problem of pipe blockage. The use of a two-stage furnace in the hot gas station can indeed significantly reduce the phenomenon of tar plugging in the gas transmission pipeline, facilitating the transportation of gas over a longer distance, but its process is complicated and the construction cost is high. Many companies also choose carefully and do not Less business or only use one-piece gas station.
In view of the current situation, our company has developed a new type of gas furnace that has the advantages of a two-stage furnace and is competitively priced. The gas generator overcomes a series of problems in the existing one-stage gas generator and two-stage gas generator for gasification of bituminous coal to produce hot gas:
1. The problem of large quantities of pulverized coal
The coal gas furnace is operated at full material layer for a long time, and the coal material is slowly moved downwards to avoid lifting of the ash with the coal gas stream when adding coal; in addition, the coal material generated during the thermal explosion of the gasification section of the furnace bottom and the coal powder generated during the operation of the probe is thickened. The thick retorts are filtered and all are deposited in coal feed for gasification. The latter point is that the two furnaces cannot do it. The coal powder produced during the thermal explosion of the coal material and the operation of the probe will be carried out with the lower gas.
2. Tar problem
The temperature of the coal gas produced in the bottom gasification section of the coal gasifier for carbonization of coal is approximately in the range of 550 to 600 °C . The dry distillation of the coal in the carbonization section belongs to low-temperature carbonization, and the dry distillate tar has good fluidity.
3. Gas furnace operation complex issues
The gas generator belongs to the gas generator with full material layer operation and single gas outlet. In operation, it overcomes the problem that one furnace needs to control the operation of the empty layer, and overcomes the problem that the two stages of the furnace need to adjust the upper and lower gas ratios. Gas stove operation is simple.
4. Gas furnace investment
The structure of the gasifier dry distillation section is simpler than the two furnaces, and the height is low and the investment is low.

Technical Support: China Yu Hao · Shanghai Huang Hao Machinery Technology Co., Ltd. · Department of Energy · Mr. Huang

24- hour technical service hotline: 18801898180

Friendly connection: