Mannheim method SOP 10000 tons proposals

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Technical Offer

FOR

10,000 MTPA POTASSIUM SULPHATE PRODUCTION PLANT

CONTENTS:

1. Process Description

2. Advantages of our Potassium Sulphate Plant

3. Plant Configuration

3.1  Unit 100: Raw material system

3.2  Unit 200: Furnace system

3.3  Unit 300:Hydrochloric Acid Absorption System:

3.4  Unit 400: Environmental Protection System:

3.5  Unit 500: Circulating Water System (Utilities):

3.6  Unit 600: Potassium Sulphate discharging from Furnaces and Bagging

3.7  Unit 700: HCL Tank Farm

Process flow diagram 1

4. Outline

4.1  Design capacity

4.2  Plant Battery Limits

4.3  Site Climatic Condition

4.4  Main Feedstock Material Requirement and Product Specification

4.5  Product Specification

4.6  Consumption of raw material and utilities

5. Equipment List for 10000MTPA Production Line

1.    Process Description

The production process is showed as below:

Using KCL (MOP, Potassium Chloride) reacts with Sulfuric Acid to produce K2SO4 (SOP, Potassium Sulphate) and HCL (Hydrochloric Acid) as a by-product, the reaction formula is showed as below:：

2 KCL + H2SO4 → K2SO4 + 2 HCL

The reaction of Sulfuric Acid with Potassium Chloride takes places in two stages:

a.  KCl + H2SO4   → KHSO4 + HCl

b.  KCl + KHSO4  → K2SO4 + HCl

The first reaction step is exothermic and proceeds at relatively low temperature. The second is endothermic and must be carried out at higher temperature. To minimize the Chloride content of the product, a small excess of Sulfuric Acid is used, which is later neutralized with Calcium Carbonate, depending on the purity requirements for the product.

The reaction is usually carried out in furnace which special designed by our company.

The furnace has a closed dish-shaped chamber, with diameter up to 6 m, heated externally by oil or gas burner. Potassium Chloride and Sulfuric Acid are fed into the chamber in the required ratio at an overhead central point. The mixture reacts with evolution of heat and it’s mixed by a slowly moving agitator fitted with central axle, the reacted material is ejected to next equipment from both side of furnace. Potassium Sulfate leaves the reaction chamber at this point and be neutralized and cooled. Hydrogen Chloride gas formed is absorbed in water to form Hydrochloric Acid.

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