CNBM Tons Potassium Sulfate (SOP) Project equipments

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Tons of Potassium Sulfate Project


CNBM is a high-tech enterprises international chemical engineering company, who is pioneering in chemical engineering technologies, and playing a leading role in new technology development, with capability of project consulting, design,procurement, construction management and production guidance.  CNBM provide services of chemical engineering and technology, with offering a scope of supply ranging from process design till the supply of completely integrated plants. CNBM master a technology of Potassium Sulfate production line, Calcium Chloride production line,sulfuric acid production line other fertilizers.We have cooperated with many international companies on projects,located Indonesia,Philippines,India,Jordan,Egypt.etc.

Potassium sulfate product quality standard

Potassium sulfate




Mannheim method potassium sulfate production process:

(1) It is a production process with little environmental pollution ;

(2) Mature technology, easy to industrialize production, improved new technologies and new processes, adapt to the requirements of the market economy, enhance the competitiveness of products in the market, the quality of potassium sulfate is good, and the output is high;

Main raw and auxiliary materials supply

NamespecificationConsumptionTotal annual consumption
1Potassium chlorideK20≥60830Kg/t83,000 tons
2sulfuric acid98%570Kg/t57,000 tons

Introduction to the preparation of potassium sulfate production plant by Mannheim method

Raw material for producing potassium sulfate

The raw material for the preparation of potassium sulfate by the Mannheim method is potassium chloride (KCL) which has K2O ≥ 60% and 98% sulfuric acid.In the production process, the hydrochloric acid system is made into tap water, and the heat required for the reaction is provided by natural gas combustion.

The nature and use of potassium sulfate


Colorless or white crystal or powder, bitter and salty

Melting point: 1069 ° C, soluble in water, insoluble in ethanol, acetone and carbon disulfide, the aqueous solution is slightly acidic.

Uses: 1. Agricultural fertilizer, used in tobacco, fruit trees, sugar cane, potatoes, vegetables, etc.

2, used as a drug (a laxative) and used in the manufacture of alum, glass and potassium carbonate.

Potassium sulfate quality specifications

Appearance: colorless or white crystal or powder.

Industrial synthetic hydrochloric acid

Relative molecular weight: 36.45

Performance: colorless transparent liquid, yellow when there is a small amount of impurities, strong acid is corrosive, can work with a variety of metals.

Uses: Important chemical raw materials for petroleum, metallurgy, printing and dyeing industries, etc.

Basic principle and process flow of potassium sulfate production

A fixed bed metathesis reaction method is employed. The solid potassium chloride and 98% sulfuric acid are continuously added to the reaction chamber at a certain ratio of feed, and the reaction is carried out under the condition of pushing the homogenate at a high temperature above 500 ° C (generally controlled at 500-530 ° C). . The raw material is continuously input under the condition of maintaining the normal bed surface, and the finished potassium sulfate is continuously discharged into the finished pusher from the outlet of the reaction chamber (symmetric two places), and enters the finished product through the gas seal conveyor under the action of cooling and stirring and pulverizing. The belt machine is then lifted, crushed, and finished with a scraper into the finished silo. The hydrogen chloride gas generated in the reaction is absorbed into water to prepare a hydrochloric acid and charged into a storage tank. Exhaust gas is discharged into the atmosphere in accordance with national emission standards.

H2SO4+2KCL   →K2 SO4+2HCL-Q

H2SO4       SO3+H2O-Q

HCL+H2O      HCL·H2O(HCl)+Q

SO3+H2O →  H2SO4+Q

Production equipment overview

Potassium sulfate reactor

The reaction furnace is mainly composed of a combustion chamber (upper) reaction chamber (middle) flue chamber (lower part), and is equipped with a feeding and mechanical stirring pushing device. The core device of the Mannheim method is the reaction furnace. The purity of the product, the conversion rate, the production capacity and the difficulty of operation are all related to the reaction furnace. Therefore, reactor performance is the key to the process. The reaction furnace is mainly made up of a variety of special refractory materials. It has two cavities. The middle elliptical cavity is the reaction chamber. The chamber is equipped with stirring tweezers. When the reaction, the tweezers rotate at 1.1r/min, and the materials are continuously mixed and gradually. Push around the cavity. The upper cavity of the reaction furnace is a combustion chamber, and the combustion chamber has a burner, and the heat released by the fuel indirectly heats the reaction chamber.

Overview of the auxiliary equipment of the reactor system

1. The main machine (with large reducer and motor driven spindle) provides the effect of fabric, mixing and product removal.

CNBM Tons  Potassium Sulfate (SOP) Project equipments

2.Reheater: φ1000×4600, cold air and flue gas heat exchange, to preheat the air, reduce the heat loss in the furnace.

CNBM Tons  Potassium Sulfate (SOP) Project equipments

3.Potassium sulphate finished product pusher: The pusher barrel is accompanied by a cooling jacket, which functions as cooling, crushing and transfer of the finished product (n≈5.53r/min).

CNBM Tons  Potassium Sulfate (SOP) Project equipments

4.Gas-sealed screw conveyor: the function of finished product conveying and gas sealing.

CNBM Tons  Potassium Sulfate (SOP) Project equipments

5.Finished belt conveyor: The finished product is conveyed with cooling (with magnets - prevent the iron from entering the rear equipment).

6.Finished bucket elevator: finished product delivery.

7.Finished squeegee conveyor: The finished product is conveyed with cooling jacket.

CNBM Tons  Potassium Sulfate (SOP) Project equipments

8.Dust collection bucket, dust collection fan, distributor: collect the finished dust back to the silo.

CNBM Tons  Potassium Sulfate (SOP) Project equipments

9. Carbon cooler: After the hydrogen chloride gas at the outlet of the reaction chamber is cooled by the heat exchange, the temperature is lowered to about 50 ° C, and sent to a sulfuric acid gas scrubber.

CNBM Tons  Potassium Sulfate (SOP) Project equipments



Big gear

.pngcooling pusher

.pngGraphite cooler

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