Device and method for purifying and recycling furnace gas of hermetic ore smelting furnace
A furnace gas purification and mine-sealing technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve the problems of loss of reuse value of dust, secondary pollution of water, water consumption, etc., to achieve efficient use of energy and prevent secondary pollution. , the effect of life expectancy
Active Publication Date: 2013-01-16
HUANYU PURIFYING ENG EQUIP MFG DASHIQIAO CITY
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Problems solved by technology
At present, the gas purification of closed submerged arc furnaces mostly adopts water washing + dry electrostatic precipitator for dust removal. Water washing will produce waste water and waste residue, resulting in secondary pollution of water. The sewage needs to be treated, the water consumption is serious, and the collected dust The value of reuse has been lost, and the dust concentration of the purified gas is 50mg / Nm 3 Above, high investment, large area
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[0020] Such as figure 1 As shown, a closed submerged arc furnace gas purification recovery device, including a closed submerged arc furnace (1), the closed submerged arc furnace (1) is connected to a cooler (3) through a water-cooled flue (2), and the cooler ( 3) Connect with the barren furnace gas induced draft fan (4), CO 2 , CO, H 2 , O 2 The concentration online gas detection analyzer (5) is installed at the outlet of the barren furnace gas induced draft fan (4). ) is equipped with an explosion relief safety device (7), the outlet of the bag filter (6) is connected to the inlet of the clean furnace gas pressurization fan (9), and the clean furnace gas pressurization fan (9) is switched through the pipe and the tee The valve (11) is connected, the online gas detection analyzer (5) is interlocked with the three-way switching valve (11), and the three-way switching valve (11) is respectively connected to the user pipeline (12) and the release tower (10), and the cooler (3...
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The invention relates to a device and a method for purifying and recycling furnace gas of a hermetic ore smelting furnace. The technical scheme of the device for purifying and recycling furnace gas of the hermetic ore smelting furnace includes that the hermetic ore smelting furnace is connected with a cooler via a water-cooling flue, the cooler is connected with a waste furnace gas draught fan, an online gas detecting analyzer is mounted at an outlet of the waste furnace gas draught fan which is connected with bag-type dedusters via pipes, an explosion venting safety device is arranged on the bag-type dedusters, a gas outlet of the bag-type dedusters is connected with an inlet of a pure furnace gas pressurizing fan, the pure furnace gas pressurizing fan is connected with a three-way changeover valve, the online gas detecting analyzer is interlocked with the three-way changeover valve which is connected with a user pipe and a diffusing tower, and the lower ends of a mechanical air cooler and the pulse bag-type dedusters are respectively connected with dust removing devices. The device for purifying and recycling furnace gas of the hermetic ore smelting furnace is simple in systematic flow path and stable and reliable in running, dust content of furnace gas purified is less than 5mg / m<3>, dust recycled can be reutilized, and secondary pollution to water can be avoided.
Description
technical field [0001] The invention relates to the field of furnace gas purification and recycling, in particular to a device and method for purifying and recycling furnace gas generated during smelting in a closed submerged arc furnace. Background technique [0002] The closed submerged arc furnace is mainly used for reducing and smelting ore. Using various sinters as raw materials, electrode smelting melts the sinters into ferro-silicon, ferro-manganese, ferro-chrome, ferro-tungsten, nickel, titanium, silicon-manganese and other ferroalloys. The furnace gas produced by the closed submerged arc furnace during smelting is high-temperature gas, which contains a large amount of dust and cannot be used directly. It must be dust-removed before use. At present, the gas purification of closed submerged arc furnaces mostly adopts water washing + dry electrostatic precipitator for dust removal. Water washing will produce waste water and waste residue, causing secondary pollution o...
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IPC IPC(8): F27D17/00F27D21/00
CPCY02P10/25
Inventor 王宇杨柏松潘家綮
Owner HUANYU PURIFYING ENG EQUIP MFG DASHIQIAO CITY
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