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Device and method for producing potassium sulfate by utilizing fluidized bed furnace reactor

A reactor and fluidized furnace technology, applied in the direction of sulfate/bisulfate preparation, energy input, etc., can solve the problems of using organic harmful solvents, complex process, high production cost, etc., to reduce equipment corrosion, high product quality, production The effect of high yield

Inactive Publication Date: 2015-01-21
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods may have complex processes, high production costs, or use organic harmful solvents, causing harm to the environment, etc.

Method used

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  • Device and method for producing potassium sulfate by utilizing fluidized bed furnace reactor
  • Device and method for producing potassium sulfate by utilizing fluidized bed furnace reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 A kind of device and method for fluidized-bedded furnace technology to produce potassium sulfate, its device is mainly composed of potassium chloride material feeding device, potassium chloride preheater (2), fluidized-bedded furnace reactor (3), sulfuric acid preheater (4 ), hot blast stove (5) and other devices. Potassium chloride feeding device is composed of potassium chloride silo (1) and potassium chloride conveyor (7). Potassium chloride silo (1) is preheated by potassium chloride conveyor (7) The potassium chloride preheater (2) is lined with a wear-resistant protective layer and an insulation layer on the outside. The gas distribution pipe (10) is installed inside, and the hydrogen chloride gas outlet (9) is opened on the top, and the chlorine The potassium chloride metering conveyor (12), the gas distribution pipe (10) is equipped with a gas nozzle (11); the fluidized furnace reactor (3) is lined with a wear-resistant protective layer, and an oute...

Embodiment 2

[0034] Example 2 An apparatus and method for producing potassium sulfate by fluidized furnace process, the apparatus and method steps can still refer to Example 1. The difference is that the weight ratio of potassium chloride to sulfuric acid is 0.85:0.58, the sulfuric acid used is industrial sulfuric acid with a mass concentration of 93%, and the outlet temperature of the hot blast stove is controlled at 850°C.

Embodiment 3

[0035]Example 3 An apparatus and method for producing potassium sulfate by fluidized furnace process, the apparatus and method steps can still refer to Example 1. The difference is that the weight ratio of potassium chloride and sulfuric acid is 0.90:0.62, the sulfuric acid used is industrial sulfuric acid with a mass concentration of 96%, the potassium oxide content of the potassium chloride used is greater than 60%, and the outlet temperature of the hot blast stove is controlled at 950°C .

[0036] The table below is the comparison of the obtained potassium sulfate product quality and expected output in Example 1 of the present invention with the currently widely used Mannheim method. Therefore, the product quality of the present invention is high and stable, and the production output is large. In addition, the corrosion of equipment in the invention is reduced, and the amount of maintenance is reduced, thereby achieving the purpose of saving energy and reducing consumption...

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Abstract

The invention provides a device and a method for producing potassium sulfate by utilizing a fluidized bed furnace reactor. The device mainly consists of a potassium chloride feeding device, a potassium chloride preheater, a fluidized bed furnace reactor, a sulfuric acid preheater, a hot blast heater and a fan, wherein the potassium chloride feeding device is connected with the potassium chloride preheater through a potassium chloride conveyor; the potassium chloride preheater is connected with the fluidized bed furnace reactor; the sulfuric acid preheater is connected with the fluidized bed furnace reactor; and the fluidized bed furnace reactor is connected with the hot blast heater and the fan through a pipeline. The device disclosed by the invention is slight in equipment corrosion, large in yield and high and stable in quality, and the energy conservation and consumption reduction aims are achieved.

Description

technical field [0001] The invention relates to a fluidized furnace technology device and method for producing potassium sulfate by using potassium chloride and sulfuric acid as raw materials, and the technical field is inorganic salt industry and chemical fertilizer industry. Background technique [0002] Potassium sulfate is a kind of chlorine-free potassium fertilizer, which is mainly used in cash crops that avoid chlorine, such as vegetables, fruits, tobacco, tea and sericulture and other crops. The main production methods of potassium sulfate are: preparation of potassium sulfate from sea and lake salt brine, preparation of potassium sulfate from potassium salt ore, double decomposition conversion method of potassium chloride and sulfate, conversion method of potassium chloride sulfuric acid, etc., and the conversion method of potassium chloride sulfuric acid The method is an important method for the production of potassium sulfate, and its representative method is the ...

Claims

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Application Information

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IPC IPC(8): C01D5/02
CPCY02P20/129
Inventor 孙爱玲柳仁民
Owner LIAOCHENG UNIV
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