Flue gas dust treatment and waste heat utilization technology of closed calcium carbide furnace
A technology of dust treatment and calcium carbide furnace, which is applied in the direction of waste heat treatment, process efficiency improvement, furnace, etc., can solve pollution and other problems, achieve the effect of solving the environmental protection problem of dust pollution, realizing coal consumption saving, and overcoming the difficulty of cooling process
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Embodiment 1
[0040] This embodiment includes the following steps:
[0041] 1) Pretreatment: After the flue gas and dust of the closed calcium carbide furnace are separated, they are collected into the ash hopper of the dust collector, and the ash hopper is filled with nitrogen and sealed for storage;
[0042] 2) Cooling: Through the sealable discharge valve, put the dust into the special cooling equipment cold ash machine. The cold ash machine is a rotary and heat exchange cooling equipment. Sealing measures are taken, and nitrogen protection is filled. The dust temperature is : 80°C; dust feed rate: 1 ton / hour; nitrogen filling pressure: 0.01-0.02 MPa; cooling water pressure: 0.35MPa; cooling water temperature: lower than 30°C; under these conditions, after cooling , the dust temperature is lower than 35°C, which is qualified;
[0043] 3) Combustion heat production: The flue gas and dust of the closed calcium carbide furnace after being cooled by nitrogen gas are sent to the ash storage ...
Embodiment 2
[0046] This embodiment includes the following steps:
[0047] 1) Pretreatment: After the flue gas and dust of the closed calcium carbide furnace are separated, they are collected into the ash hopper of the dust collector, and the ash hopper is filled with nitrogen and sealed for storage;
[0048] 2) Cooling: Through the sealable discharge valve, put the dust into the special cooling equipment cold ash machine. The cold ash machine is a rotary and heat exchange cooling equipment. Sealing measures are taken, and nitrogen protection is filled. The dust temperature is : 100°C; dust feed rate: 0.9 tons / hour; nitrogen filling pressure: 0.01~0.02 MPa; cooling water pressure: 0.3MPa; cooling water temperature: lower than 30°C; under these conditions, after cooling , the dust temperature is lower than 35°C, which is qualified;
[0049] 3) Combustion heat production: The flue gas and dust of the closed calcium carbide furnace after being cooled by nitrogen gas are sent to the ash stora...
Embodiment 3
[0052] This embodiment includes the following steps:
[0053] 1) Pretreatment: After the flue gas and dust of the closed calcium carbide furnace are separated, they are collected into the ash hopper of the dust collector, and the ash hopper is filled with nitrogen and sealed for storage;
[0054] 2) Cooling: Through the sealable discharge valve, put the dust into the special cooling equipment cold ash machine. The cold ash machine is a rotary and heat exchange cooling equipment. Sealing measures are taken, and nitrogen protection is filled. The dust temperature is : 120°C; dust feed rate: 0.8 tons / hour; nitrogen filling pressure: 0.01-0.02 MPa; cooling water pressure: 0.35MPa; cooling water temperature: lower than 30°C; under these conditions, after cooling , the dust temperature is lower than 35°C, which is qualified;
[0055] 3) Combustion heat production: The flue gas and dust of the closed calcium carbide furnace after being cooled by nitrogen gas are sent to the ash stor...
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Abstract
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