Calcium carbide furnace for exhaust gas recycling
A technology of exhaust gas circulation and calcium carbide furnace, applied in the direction of carbide, calcium carbide, etc., can solve the problems of waste of resources, increase production cost, reduce production efficiency, etc., and achieve the effect of saving energy, improving productivity, and improving the efficiency of electric furnace
Inactive Publication Date: 2016-02-10
ZHEJIANG TIANXIANG ENVIRONMENTAL PROTECTION EQUIP
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Problems solved by technology
The traditional calcium carbide furnace needs to treat the tail gas before it can be discharged, which not only wastes the useful resources in the tail gas, but also increases the production cost and reduces the production efficiency
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[0019] refer to figure 1 , figure 2 , image 3 , a calcium carbide furnace for exhaust gas recycling in the present invention, comprising a calcium carbide furnace 1, an electrode 2, a lime kiln 3, a first conveying device 4 and a second conveying device 5, the end of the electrode 2 is installed in the calcium carbide furnace 1, and the A transformer 21 is connected to the electrode 2, a feed channel 22 is provided inside the electrode 2, the first conveying device 4 is located above the electrode 2, a feed hopper 6 is installed on the calcium carbide furnace 1, and the lime kiln 3 exhausts smoke through The pipe 7 is connected with the calcium carbide furnace 1, and the lime kiln 3 is equipped with a second delivery device 5, the second delivery device 5 is located above the feed hopper 6, and the bottom of the calcium carbide furnace 1 is provided with a discharge port 11, and the discharge port 11, a feeding trolley 12 is installed in the front, a buffer zone 13 is prov...
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The invention discloses a calcium carbide furnace capable of recycling tail gas. The calcium carbide furnace capable of recycling tail gas comprises a calcium carbide furnace, electrodes, a lime kiln, a first conveying device and a second conveying device; the tail ends of the electrodes are mounted in the calcium carbide furnace; a transformer is connected to the electrodes; a feed channel is formed in each electrode; the first conveying device is located above the electrodes; a feed hopper is mounted on the calcium carbide furnace; the lime kiln is connected with the calcium carbide furnace by use of a smoke exhaust pipe; the second conveying device is mounted on the lime kiln; the second conveying device is located above the feed hopper; a discharge hole is formed in the bottom of the calcium carbide furnace; a feeding trolley is mounted in front of the discharge hole. The calcium carbide furnace capable of recycling tail gas is capable of calcining limestone in the lime kiln by use of the byproduct furnace tail gas of a calcium carbide plant as a fuel, and is easy to control automatically so that the productivity can be improved; besides, the produced quick lime is quite soft, and relatively good in reactivity; meanwhile, the interior of each electrode is hollowed-out, and a carbon powder material is directly fed into the calcium carbide furnace via the feed channels, and as a result, more than half of consumption of the electrodes can be reduced.
Description
【Technical field】 [0001] The invention relates to the technical field of calcium carbide furnaces, in particular to the technical field of calcium carbide furnaces for tail gas recycling. 【Background technique】 [0002] Industrial calcium carbide is produced from quicklime and carbon materials (coke, anthracite, petroleum coke) in an electric furnace according to the equation CaO+3C→CaC2+CO–465kJ / mol. It is a strongly endothermic reaction. It proceeds at a significant rate at temperatures >1600°C. Studies have shown that this reaction proceeds in two steps: a.CaO+C→Ca+CO; b.Ca+2C—CaC2, the reaction in the electric furnace is mainly carried out in the CaC2-CaO melt, and it is also found that the dissolved in the melt The step of CaO migration to the surface of coke particles is the rate-controlling step of the reaction, and the CaC2 generated on the surface of coke is immediately melted into the melt. When the reaction temperature is higher than 2000°C, side reactions wi...
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IPC IPC(8): C01B31/32C01B32/942
Inventor 杨利人郦天明
Owner ZHEJIANG TIANXIANG ENVIRONMENTAL PROTECTION EQUIP