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Anti-corrosion and anti-coking coke oven flue waste gas waste heat recycling bridge duct
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A coke oven flue and waste heat recovery technology, which is applied in the heating of coke ovens, coke ovens, waste heat treatment, etc., achieves the effects of simple structure, good coke removal effect, and good anti-corrosion effect.
Active Publication Date: 2017-11-21
NANJING HUADIAN ENERGY SAVING & ENVIRONMENTAL PROTECTION EQUIP
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Problems solved by technology
The existing bridge pipe is a section of circular arc pipe, which connects the horizontal outlet of the tee with an included angle of 90 degrees and the vertical inlet of the gas collecting pipe, and only plays the role of connecting the flue.
Method used
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Embodiment 1
[0018] The anti-corrosion and anti-coking coke oven flue gas waste heat recovery bridge pipe includes a connecting horizontal pipe (1), a spiral vertical pipe (2), a decoking section (3), and a connecting vertical pipe (4) connected in sequence.
[0019] The inner walls of the connecting horizontal pipe (1), the spiral vertical pipe (2), the decoking section (3), and the connecting vertical pipe (4) are provided with an anti-corrosion coating, and the anti-corrosion coating consists of the following components by weight Preparation: 10 parts of phosphate base material, 6.5 parts of silica sol, 4.5 parts of titanatecoupling agent, 4.5 parts of graphene, 1.5 parts of nano-copper, 3 parts of nano-zinc, 2 parts of chitosan, and 25 parts of water.
[0020] The outer walls of the connecting horizontal pipe (1) and the connecting vertical pipe (4) are provided with a heat insulating layer.
[0021] The bottom of the connecting horizontal pipe (1) is arranged obliquely.
[0022] The...
Embodiment 2
[0027] It is basically the same as Example 1, the only difference is:
[0028] The anti-corrosion coating is made of the following components by weight: 10 parts of phosphate base material, 6.7 parts of silica sol, 4.3 parts of titanatecoupling agent, 4.7 parts of graphene, 1.7 parts of nano-copper, 2.8 parts of nano-zinc 2.2 parts of chitosan, 25 parts of water;
[0029] The high-efficiency heat-conducting focus-collecting composite material is made of at least the following components by weight: 100 parts of iron, 12.6 parts of chromium, 5.69 parts of nickel, 0.80 parts of silicon, 0.57 parts of carbon, 0.78 parts of manganese, and 0.5 parts of titaniumnitride , 1.7 parts of carbon nanotubes, 0.8 parts of siliconnitride, 2.2 parts of nano-copper, and 0.8 parts of nano-alumina.
Embodiment 3
[0031] It is basically the same as Example 1, the only difference is:
[0032] The anti-corrosion coating is made of the following components by weight: 10 parts of phosphate base material, 6.3 parts of silica sol, 4.7 parts of titanatecoupling agent, 4.3 parts of graphene, 1.3 parts of nano-copper, 3.2 parts of nano-zinc 1.8 parts of chitosan, 25 parts of water;
[0033] The high-efficiency heat-conducting focus-collecting composite material is made of at least the following components by weight: 100 parts of iron, 12.2 parts of chromium, 5.65 parts of nickel, 0.76 parts of silicon, 0.53 parts of carbon, 0.74 parts of manganese, and 0.7 parts of titaniumnitride , 1.3 parts of carbon nanotubes, 1.2 parts of silicon nitride, 1.8 parts of nano-copper, and 1.2 parts of nano-alumina.
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Abstract
The invention provides an anti-corrosion and anti-coking coke oven fluewaste gaswaste heat recycling bridge duct. The anti-corrosion and anti-coking coke oven fluewaste gaswaste heat recycling bridge duct comprises a connecting cross pipe, a spiral vertical pipe, a coke removing section and a connecting vertical pipe which are sequentially connected. The bottom of the connecting cross pipe is obliquely arranged. The coke removing section comprises a waste heatsmoke pipeline, a set of heat exchange plates, a cold water pipeline, a hot water pipeline, a coke collecting pipe, a coke removing pipe and a coke discharging pipe. The set of heat exchange plates are arranged on the upper wall and the lower wall of the waste heat smoke pipeline alternately. The windward faces of the heat exchange plates are internally provided with cold water medium channels to be connected with the cold water pipeline. The leeside faces of the heat exchange plates are internally provided with hot water medium channels to be connected with the hot water pipeline, the cold water medium channels are connected with the hot water medium channels, the coke removing device is arranged on the windward faces of the heat exchange plates, and the coke discharging pipe is arranged on the lower side wall of the waste heat smoke pipeline and is connected with the coke collecting pipe. The bridge duct is simple in structure, low in cost and good in corrosion preventing effect and also has a very good coke removing effect.
Description
technical field [0001] The invention belongs to the field of coke oven equipment, in particular to an anti-corrosion and anti-coking coke ovenflue waste heat recovery bridge pipe. Background technique [0002] The coke oven can perform high-temperature dry distillation on coal and efficiently convert it into coke, coke oven gas, coaltar, crude benzene and other products. It is an efficient energy conversion kiln. In coke oven expenditure heat, 650°C-700°C raw coal gas takes up about 36% of the heat, which has a very high recycling value. At present, the industrial application of raw gas is usually realized by cooling treatment process. The traditional process is: spray a large amount of circulating ammonia water at 70°C-75°C on the high-temperature raw gas to cool it down, and realize waste heat recovery. However, this will lead to high-temperature raw gas. Heat is wasted by extensive evaporation of the circulating ammonia. [0003] In the 1980s, most coking plants in Ja...
Claims
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Application Information
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