Coal Chemical Pump

Medium Characteristics: Black water containing 5%–30% solids, temperature ≤150°C, with trace amounts of NH₃, H₂S, CO₂, and Fe⁻. The medium is prone to scaling and is corrosive.
The challenge posed by transporting solids-laden media is severe erosion and corrosion of flow-through components and mechanical seals. To address this: a. Flow-through components such as the pump body, impeller, and pump cover are constructed from suitable materials and undergo rigorous treatment, significantly extending the service life of wear-resistant parts while greatly simplifying user maintenance. b. Low rotational speeds are employed to enhance the pump’s erosion resistance. c. Corresponding measures are taken for the mechanical seal: a throttling ring is added at the seal location to ensure the pump operates under favorable conditions, guaranteeing long-term reliable seal performance. This simplifies equipment maintenance, significantly reduces repair costs, and crucially, greatly enhances the reliability of equipment operation.

1. Flow rate: 3–2400 m³/h;

2. Head: 4–180 m;

3. Rotational speed: 1500 rpm, 3000 rpm;

4. Particle concentration in medium: 0–30%;

5. Medium temperature: -40°C to 180°C;

6. Various corrosive media;

Performance and Material Characteristics

■Hydraulic design employs computer-aided design (CAD) and two-phase flow theory.

■High efficiency, long service life, and reliable operation.

■ The flow-through components are constructed from fully metallic, wear-resistant chromium-nickel alloy material, offering both wear resistance and corrosion resistance. Featuring a small intergranular gap on the surface, it exhibits excellent resistance to chloride stress corrosion cracking and higher mechanical strength.

■High operational reliability: All-metal pumps overcome the drawbacks of non-metallic pumps, such as lining detachment, tearing, and deformation.

■ Low hydraulic friction loss, delivering over 3% higher efficiency than non-metallic pumps with identical specifications.

■ All-metal pumps offer superior dimensional stability and control, featuring high surface finish on components, minimal clearance between parts, and high volumetric efficiency. Their overall efficiency exceeds that of non-metal pumps by more than 5%.

■ The service life of the flow-through components is extended, as the metal guard plate exhibits superior resistance to shear sliding wear compared to typical non-metallic materials, enabling it to withstand prolonged shear abrasion.

■ Dynamic wear resistance ranges from 0.008 to 0.08 mm per year, with high tensile strength, maintaining consistent performance under prolonged abrasive conditions.

Shaft Seal Type

All shaft seals utilize mechanical seals. Our company offers two types of mechanical seal configurations: water-type shaft seals and non-water-type shaft seals.

■Shaft seal water type

For split mechanical seals, the packing water flow rate should be 0.1 to 1% of the pump flow rate, but not less than 1 m³/h. The packing water pressure should equal half of the pump discharge pressure.

■Shaftless Water-Cooled Type

Waterless self-flushing mechanical seal with a unique structure and excellent water-saving performance.

Water-Coal Slurry Gasification
High-Pressure Coal Slurry Feed Pump: Used to transport water-coal slurry to the gasifier.
Preheating Water Pump: Used to preheat coal slurry, enhancing gasification efficiency.
Quench Water Pump: Used to cool high-temperature gas within the gasifier.

Ash Water Treatment
Low-Pressure Ash Water Pump: Used to transport ash water discharged from the gasifier.
Clarifier Feed Pump: Used to convey ash water to the clarifier.
Clarifier Bottom Pump: Used to convey high-concentration ash water from the clarifier bottom.

Methanol Synthesis and Distillation
Methanol Feed Pump: Used in the methanol synthesis unit.
Methanol Distillation Pump: Used for reflux and transfer in the methanol distillation column.

Shift and Cryogenic Methanol Wash
Process Condensate Pump: Used in the shift unit.
Cryogenic Methanol Wash Pump: Used in the cryogenic methanol wash unit.

Sulfur Recovery and Hydrogen Recovery
Liquid Sulfur Pump: Used in the sulfur recovery unit.
Acid Water Pump: Used to handle acidic liquids in the sulfur recovery process.

Air Separation Unit
High-Pressure Liquid Oxygen Pump: Used in the air separation unit.
Cooling water pump: Used in the cooling system of the air separation unit.
7. Coal slurry preparation
Coal slurry discharge pump: Used for discharging coal slurry.
Additive metering pump: Used for conveying additives during coal slurry preparation.
8. Other Applications
Slag Pond Pump: Used for conveying slag discharged from the gasifier.
Filter Feeder Pump: Used for feeding the filter.
Ground Wash Liquid Submersible Pump: Used for conveying ground wash liquid.1. Water-Coal Slurry Gasification
High-Pressure Coal Slurry Feed Pump: Used to transport water-coal slurry to the gasifier.
Preheating Water Pump: Used to preheat coal slurry, enhancing gasification efficiency.
Quench Water Pump: Used to cool high-temperature gas within the gasifier.
2. Ash Water Treatment
Low-Pressure Ash Water Pump: Used to transport ash water discharged from the gasifier.
Clarifier Feed Pump: Used to convey ash water to the clarifier.
Clarifier Bottom Pump: Used to convey high-concentration ash water from the clarifier bottom.
3. Methanol Synthesis and Distillation
Methanol Feed Pump: Used in the methanol synthesis unit.
Methanol Distillation Pump: Used for reflux and transfer in the methanol distillation column.
4. Shift and Cryogenic Methanol Wash
Process Condensate Pump: Used in the shift unit.
Cryogenic Methanol Wash Pump: Used in the cryogenic methanol wash unit.
5. Sulfur Recovery and Hydrogen Recovery
Liquid Sulfur Pump: Used in the sulfur recovery unit.
Acid Water Pump: Used to handle acidic liquids in the sulfur recovery process.
6. Air Separation Unit
High-Pressure Liquid Oxygen Pump: Used in the air separation unit.
Cooling water pump: Used in the cooling system of the air separation unit.
7. Coal slurry preparation
Coal slurry discharge pump: Used for discharging coal slurry.
Additive metering pump: Used for conveying additives during coal slurry preparation.
8. Other Applications
Slag Pond Pump: Used for conveying slag discharged from the gasifier.
Filter Feeder Pump: Used for feeding the filter.
Ground Wash Liquid Submersible Pump: Used for conveying ground wash liquid.

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