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Product features
The desulfurization pump is the core equipment of the wet flue gas desulfurization (WFGD) system. It is specially used to transport highly corrosive and abrasive desulfurization slurries (such as limestone/gypsum slurries), which are resistant to strongly acidic media with a pH of 1~5 and abrasive fluids with a solid content of ≤30%.
Desulfurization pump is a kind of pump that can adapt to a variety of different working conditions, such as conveying acid, alkaline clear liquid or slurry; various corrosive mineral slurry in smelting industry; various dilute acids in sulfuric acid industry; various types of sewage in environmental protection industry, etc.The pump is both corrosion-resistant and wear-resistant, and has a wide range of uses.Has the following characteristics：
(1) Strong wear resistance: All overcurrent parts are made of steel-lined ultra-high molecular weight polyethylene (UHMW-PE). The wear resistance of ultra-high molecular weight polyethylene (UHMW-PE) ranks first among plastics, 4 times higher than nylon 66 (PA66) and polytetrafluoroethylene (PTFE), and 7-10 times the wear resistance of carbon steel and stainless steel.
(2) Strong impact resistance: The impact strength of ultra-high molecular weight polyethylene ranks first among general engineering plastics, which is 5 times that of (acrylonitrile/butadiene/styrene) copolymer (ABS), and can remain stable at minus 196℃, which is a characteristic that no other plastic has.
(3) Excellent corrosion resistance: The pump can withstand various corrosive media (acids, alkalis, salts) and organic solvents within a certain temperature and concentration range, and it is immersed in 80 kinds of organic solvents at 20℃ and 90℃ for 30d.There is no abnormality in appearance, and there is almost no change in other physical properties.
(4) No noise: The impact energy absorption of ultra-high molecular weight polyethylene is the highest value in plastics, and the silencer is good, which minimizes the noise generated by the liquid flow during the conveying process.
(5) Safe and reliable, non-toxic decomposition: The ultra-high molecular weight polyethylene (UHMW-PE) used in this pump has extremely stable chemical properties, so it is also suitable for use in the food industry.
(6) Low coefficient of friction: the internal friction system of the pump is only 0.07-0.11, so it is self-lubricating.Under water lubrication conditions, its coefficient of dynamic friction is half lower than that of PA66 and polyoxymethylene (POM).When working in the form of sliding or rotating, the lubricity is better than that of steel and brass after adding lubricating oil.
(7) Good anti-viscosity: ultra-high molecular weight polyethylene (UHMW-PE) has excellent anti-viscosity and has the same anti-adhesion ability as PTFE, so it also performs well when conveying some high-viscosity media.
Main performance
(1) Corrosion-resistant and wear-resistant, one pump is multi-purpose, and acid-base clear liquid slurry is suitable.
(2) The pump body is a steel-lined ultra-high molecular weight polyethylene structure with a lining thickness of 8~20mm. The pump uses patented plastic-lined technology. Compared with other similar pumps, it has the advantages of good thermal deformation resistance, cracking resistance, anti-shedding, and high operating temperature of the lining layer.
(3) There are two types of impeller, separate type and closed type, which can be selected according to the condition of the medium.
(4) Sealing: K-type power seal, K1-type power seal, T-type packing seal, T1-type packing seal, C3-type non-standard seal.
(5) Applicable media: sulfuric acid with a concentration of less than 80%, nitric acid with a concentration of less than 50%, hydrochloric acid with various concentrations, liquid alkali, suitable for both clear liquid and slurry.
4. Main technical parameters: the use temperature is -20℃～90℃ (using modified materials, it can be increased to more than 100℃), the inlet diameter is 32mm～350mm, the flow rate is 5～2600m3/h, and the head is within 80m.
Application scope and typical scenarios
Power industry
Flue gas desulfurization in thermal power plants: conveying limestone slurry (15%~25% solid content) and gypsum slurry (pH 2~5)；
Case study: In 2024, a power plant renovation project of Guodian adopted DTB600-35 desulfurization pump, which operated continuously for 18 months without major repairs.
Iron and steel metallurgy
Desulfurization system of sintering machine: treatment of high⁻temperature flue gas containing SO₂ and Cl-(medium temperature ≤80℃)；
Special requirements: it needs to be resistant to chloride ion corrosion (choose hastelloy C276 material).
Chemical industry and papermaking
Sulfuric acid exhaust gas treatment: transport dilute sulfuric acid slurry (concentration 5%~10%)；
Papermaking black liquid recovery: rubber-lined pump for alkali-resistant media (pH 10~12).
Performance parameters
Model | Flow rate (m3/h) | Head (m) | Solid content of medium | Material scheme | Power (kW) |
DTB200-50 | 200 | 50 | ≤20% | Cr30 alloy | 90 |
DTB500-30 | 500 | 30 | ≤25% | Rubber lining + ceramic impeller | 160 |
DTB1200-20 | 1200 | 20 | ≤30% | Hastelloy C276 | 315 |
Selection and use recommendations
Key selection factors
Medium characteristics: pH value, Cl-concentration, solid content, particle hardness (Mohs hardness)；
Temperature range: conventional type (-20℃~80℃) vs high temperature type (≤120℃)；
Explosion-proof requirements: ATEX or GB standard explosion-proof certification is required for chemical scenes.
Contraindications to use
❌ No idling (need to be equipped with liquid level interlocking protection)；
❌ Avoid long-term low-flow operation (accelerate lining wear)；
✅ After shutdown, the pump chamber needs to be thoroughly rinsed to prevent slurry compaction.
Factory scene
FAQ
Q: What kind of company is Hebei Shenlan Pump & Valve Co., Ltd.?
A: Hebei Shenlan Pump & Valve Co., Ltd. is a modern pump and valve enterprise integrating R&D, production, sales, and service, dedicated to providing high-quality pump and valve products and solutions to global customers.
Q: What are your main products?
A: We mainly produce various types of water pumps, valves, and complete water supply equipment, widely used in building construction, municipal engineering, petrochemicals, power metallurgy, agricultural irrigation, and other fields.
Q: How do I choose the right product?
A: You can browse our products by category on our website or directly contact our sales team with your specific requirements. We will recommend the most suitable products for you.
Q: Do you offer product customization services?
A: Yes, we have a professional R&D team that can provide product customization services based on your specific needs.
Desulfurization pump
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Classification
Keywords
Shenlan pump valve
Desulfurization pump
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