Home / Services / Pump Encyclopedia / Pump Knowledge / Chemical equipment's requirements for the selection of corrosion-resistant chemical centrifugal pumps

Chemical equipment's requirements for the selection of corrosion-resistant chemical centrifugal pumps

06 Sep 2021Email

There are many kinds of equipment in chemical plants. Chemical equipment generally exists in a special working condition, for example, used in a corrosive and volatile medium environment. There is also an important equipment in it, that is, corrosion-resistant chemical industry. Since the centrifugal pump is such a special situation, the corrosion-resistant centrifugal pump must also have special requirements. Now we will introduce the eight major requirements of chemical equipment for corrosion-resistant chemical centrifugal pumps.

chemical pumps

(1) It must meet the requirements of process parameters such as flow, head, pressure, temperature, and cavitation margin.

(2) Must meet the requirements of media characteristics:

① For pumps that transport flammable, explosive, toxic or precious media, reliable shaft seals or use of leak-free chemical centrifugal pumps are required.

② For pumps that transport corrosive media, the flow parts are required to be made of corrosion-resistant materials.

③For pumps that transport solid particles, the wetted parts are required to be made of wear-resistant materials, and the shaft seal should be flushed with clean liquid when necessary.

(3) Must meet on-site installation requirements:

① For pumps installed in places where corrosive gas exists, measures to prevent atmospheric corrosion are required.

② For pumps that are installed in an outdoor environment with a temperature lower than -20C, it is required to consider the cold brittleness of the pump and use low-temperature resistant materials.

③For pumps installed in explosive areas. Explosion-proof motors should be used according to the explosion zone level.

(4) For factories requiring major overhaul every year, the continuous operation period of corrosion-resistant chemical centrifugal pumps should generally not be less than 8000 hours. In order to meet the requirements of a three-year overhaul, APl610 (8th edition) stipulates that the continuous operation period of pumps for petroleum, heavy chemical and gas industries is at least 3 years.

(5) The design life of the pump is generally at least 10 years. APl610 (8th edition) stipulates the design life of centrifugal pumps for petroleum, heavy chemical and gas industries.
(6) The pump factory should guarantee the performance of the corrosion-resistant chemical centrifugal pump within the range of power supply voltage and frequency. The range of power supply voltage and frequency in my country is: voltage-380V ± 10%, 6000V + 5%, -7%, frequency-50Hz ± 0.5%

(7) When determining the pump model and manufacturer, factors such as pump performance, energy consumption, reliability, price, and manufacturing specifications should be considered comprehensively.

Related Pump Knowledge
More Pump Knowledge
27 Sep 2021
Technical parameters of md280-43×3 multistage centrifugal pump     Rated flow (m3/h): 280   Rated head (m): 129   Rated efficiency (%): 77   Shaf...
Read more
26 Sep 2021
The pump model D46-50X9 is a single-suction, multi-stage, segmented, centrifugal, and multi-stage pump. It has the characteristics of high efficiency,...
Read more
25 Sep 2021
MD85-80X9 mining multi-stage pump   Model: MD85-80X9   Rated flow (m3/h): 85   Rated head (m): 720   Rated efficiency (%): 65   Shaft power (kw):...
Read more
24 Sep 2021
MD280-43*6 mining pump parameters   model:MD280-43*6 Number of levels: 6 levels Flow rate (m3/h):185, 280, 335 Head (m):288, 258, 232.2 Speed (r...
Read more
Related Products
Split Case Pump
Split Case Pump
  • Capacity:60-33005m³/h
  • Head:0.95-30.2bar
  • Price:$2200-215000
Double Suction Pump
Double Suction Pump
  • Capacity:60-33005m³/h
  • Head:0.95-30.2bar
  • Price:$2200-215000
Single Stage Chemical Pump
Single Stage Chemical Pump
  • Capacity:5.5-2600m³/h
  • Head:1.6-25bar
  • Price:$4300-37000
End Suction Chemical Pump
End Suction Chemical Pump
  • Capacity:5.5~400m³/h
  • Head:0.42-12.5bar
  • Price:$560-9800
Need More Information?
Contact us for more details about our pump, solutions and services.
Contact ZB
0086 731 88192011
Leave a message
Split Case Pump
Mining Industry
Urban Water Supply
Light Industry
Chemical Industry
Farmland Irrigation
Provide your comments and questions.