Potassium sulphate reaction furnace

Abstract

The invention provides a potassium sulphate reaction furnace. The potassium sulphate reaction furnace comprises a reaction furnace body, an outer furnace body surrounding the reaction furnace body and a flame path arranged between the reaction furnace body and the outer furnace body. A concentrated sulfuric acid inlet and a potassium chloride inlet are formed in the upper portion of the reaction furnace body, and the reaction furnace body is made of nickel chrome. A chlorine hydride gas discharging opening is formed in the upper portion of the reaction furnace body. Four overhauling observing openings are formed in the lateral sides of the reaction furnace body, each lateral side of the reaction furnace body is correspondingly provided with one overhauling observing opening, and the overhauling observing openings are communicated with the outer furnace body. According to the potassium sulphate reaction furnace, the materials of the furnace body are improved to achieve the energy-saving aim and the environment-friendly aim.

Description

technical field [0001] The invention relates to a potassium sulfate production equipment, in particular to a potassium sulfate reaction furnace. Background technique [0002] The traditional potassium sulfate production equipment mainly adopts the Mannheim method reaction furnace, which is an inner and outer double-layer furnace body structure made of refractory bricks. The inner layer reaction furnace is made of silicon carbide bricks. fire road. During production, potassium chloride and concentrated sulfuric acid are added into the reaction furnace through the inlets of potassium chloride and concentrated sulfuric acid on the top of the reaction furnace and stirred. The heat is transferred inside the furnace, and the reaction temperature in the furnace is kept at about 530-560 degrees. The reaction generates potassium sulfate, and the generated hydrogen chloride gas is discharged from the bottom. The structure of this kind of Mannheim method reactor has the following dis...

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Problems solved by technology

[0003] 1. Not conducive to environmental protection and energy saving

When using the Mannheim method reactor to produce potassium sulfate, the actual reaction temperature of potassium chloride and concentrated sulfuric acid is about 530 degrees, and considering that the concentrated sulfuric acid and the hydrogen chloride gas produced by the reaction are highly corrosive, leading to the traditional The Mannheim method reaction furnace uses refractory brick material as the main material of the furnace body. Although the refractory brick material has good corrosion resistance and high temperature resistance, its heat conduction efficiency is very low. Therefore, in order to ensure the temperature in the reaction furnace To maintain it at about 530 degrees, it needs to use an external temperature of about 1000 degrees, which will cause a lot of energy loss in the middle, and the heat transfer area on the top of the traditional Mannheim method reactor is small, the heat utilization rate is low, and heat energy is wasted; Heim method reactor is not conducive to environmental protection and energy saving

[0004] 2. The bottom plate of the reaction furnace is easy to corrode, resulting in acid leakage

Since the heat conduction part of the traditional Mannheim method reactor is mainly concentrated in the silicon carbide vault of the reactor, the hydrogen chloride gas generated by the reactor can only be discharged from the bottom of the furnace wall, so it is easy to corrode the bottom of the reactor, resulting in acid leakage Phenomenon

[0005] 3. Inconvenient inspection and maintenance

Because the traditional Mannheim method reactor adopts refractory brick structure, because it is made of bricks one by one, it is not convenient to open more inspection openings. Only inspection openings can be opened on the two sides of the reactor, which can only be used for The two sides of the furnace body are observed and maintained, so the inspection and maintenance are very inconvenient; in addition, the traditional Mannheim method reactor has slow heat dissipation and slow temperature rise, resulting in long maintenance time

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