Novel furnace baking method of yellow phosphorus electric furnace

An oven method and yellow phosphorus technology are applied in electric furnace heating, furnace, furnace components and other directions, which can solve the problems of high energy consumption, reducing the service life of yellow phosphorus electric furnace, damage of yellow phosphorus electric furnace, etc. The effect of strong temperature controllability and short oven cycle

Active Publication Date: 2018-12-18
孙志立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a new oven method for yellow phosphorus electric furnaces to solve the problems that the current yellow phosphorus electric furnaces consume a lot of energy, easily cause damage to yellow phosphorus electric furnaces, and reduce the service life of yellow phosphorus electric furnaces.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Select a yellow phosphorus electric furnace with a capacity of 30000KVA and perform the following operations:

[0032] (1) Si0 2 Stacked in a ring around the furnace wall, the stack height is 300mm, and extends from the center of the bottom of the furnace to lay coke to Si0 2 A coke bed is formed at the stacked ring, and a firing carbon brick is arranged in the coke bed directly below the electrode. The total thickness of the carbon brick and the coke bed directly below the electrode is 800mm, and the thickness of the coke bed in other parts of the furnace is 450mm;

[0033] (2) Adjust the transformer to the lowest gear for no-load operation, and adjust the electrode position so that the distance between it and the coke bed is kept within the range of 0-320mm, and the phosphorus furnace is heated;

[0034](3) Control the heating rate within 8-20°C / h, raise the temperature to 150°C temperature point, adjust the electrode position, keep the temperature for 20 hours, then...

Embodiment 2

[0038] Select a yellow phosphorus electric furnace with a capacity of 30000KVA and perform the following operations:

[0039] (1) A coke bed is laid on the bottom of the furnace, and the coke bed directly below the electrode is laid in the shape of a steamed bun facing the electrode, and a firing carbon brick facing the electrode is arranged in the steamed bun-shaped coke layer, so that the electrode and the coke bed are separated. The contact is better, the total thickness of the charcoal brick and steamed bun-shaped coke layer is 600mm, and the thickness of the coke bed in other parts of the furnace is 400mm;

[0040] (2) Adjust the transformer to the lowest gear for no-load operation, and adjust the distance between the electrode and the coke bed to keep it within the range of 0-320mm, and perform the heating operation;

[0041] (3) Control the heating rate within 8-20°C / h, raise the temperature to 150°C temperature point, adjust the electrode position, keep the temperature...

Embodiment 3

[0045] Select a yellow phosphorus electric furnace with a capacity of 30000KVA and perform the following operations:

[0046] (1) Pile the leftover coke left over from the last oven in the furnace along the furnace wall into a hollow ring with a stacking height of 400mm, and then lay coke from the center of the furnace until the laid coke is in phase with the remaining coke Then lay the coke bed facing the electrode in the shape of a steamed bun, and lay a firing charcoal brick in each steamed bun-shaped coke layer. The total thickness of the steamed bun-shaped coke layer directly below the electrode plus the firing charcoal brick is 600mm. The thickness of coke bed in other parts is 400mm;

[0047] (2) Adjust the transformer to the lowest gear for no-load operation, and adjust the electrode position to keep the distance from the coke bed within the range of 0-320mm, and heat up the phosphorus furnace;

[0048] (3) The heating rate is controlled within 8-20°C / h, and the tempe...

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PUM

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Abstract

The invention discloses a novel furnace baking method of a yellow phosphorus electric furnace. The novel furnace baking method comprises the following steps that (1) a coke bed is paved; (2) temperature is increased for furnace baking, wherein a phosphorus furnace transformer grading switch is adjusted to the lowest gear, idle running is achieved, and a lifting electrode is used for controlling the temperature in the yellow phosphorus electric furnace; and (3) the chemical feeding and load increase process is achieved, wherein the electrode is adjusted again, chemical feeding is achieved again, the temperature of a molten bath is increased to 1400 DEG C or above, and normal production is achieved. According to the novel furnace baking method of the yellow phosphorus electric furnace, the number of times of switching off and on of a phosphorus furnace transformer can be reduced, impacts borne by the transformer can be reduced, and a good protection function is achieved on the transformer; and meanwhile, the novel furnace baking method has the advantages that process operation is simple, the furnace baking period is short, the heat utilization rate is high, ferrophosphorus leaking and brick floating can be effectively avoided, the service life of the yellow phosphorus electric furnace can be prolonged, and energy saving and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of yellow phosphorus production, in particular to a novel oven method for a yellow phosphorus electric furnace. Background technique [0002] The rise of China's yellow phosphorus industry and the innovative technology of the multi-electrode yellow phosphorus electric furnace are a major event to be proud of in the industry, and have made positive contributions to the development of the phosphorus industry in China and the world. In order to improve the product quality and prolong the service life of the yellow phosphorus electric furnace, the multi-electrode yellow phosphorus electric furnace still needs to be operated on the yellow phosphorus electric furnace before production, so that the moisture and volatile matter of the furnace lining can be evaporated and volatilized through the oven. The furnace-building materials between the carbon bricks are naturally filled and filled at high temperature, and are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D11/10F27D19/00
CPCF27D11/10F27D19/00F27D2019/0003F27D2019/0037Y02P20/10
Inventor 孙志立姚之琦张洪兵尹品云杜劲松张东梅曹林
Owner 孙志立
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