Vertical long axis semi submersible turbine pump solution for petrochemical industry

In the petroleum and chemical industries, vertical long shaft semi submersible turbine pumps can be applied to various specific scenarios such as corrosive medium transportation, high temperature and high pressure working conditions, wastewater treatment, and liquid transportation in storage tank areas. The following are solutions for each scenario:
1、 Application scenario analysis
Transport of corrosive media:
The petroleum and chemical industries often require the transportation of highly corrosive media such as hydrochloric acid, sulfuric acid, and fluorine-containing wastewater, which place extremely high demands on the material and sealing performance of the pump body.
For example, in the etching process of PCB production, it is necessary to circulate and transport acidic etching solution. If the pump body is not sealed tightly, it will cause leakage and contamination of the etching solution, affecting the stability of the etching process and increasing the product defect rate.
High temperature and high pressure working conditions:
Some chemical processes involve the transportation of high-temperature and high-pressure media, such as extracting high-temperature geothermal water from geothermal power plants to drive turbines for power generation, which requires the pump body to have high-temperature and high-pressure resistance.
During the water injection process of oil wells, the vertical long axis semi submersible turbine pump needs to adapt to the situation of large well depth, improve oil well recovery rate, and reduce oil well blockage.
Wastewater treatment:
The petroleum and chemical industries generate a large amount of wastewater containing heavy metals, organic compounds, and other pollutants, which need to be safely transported to treatment facilities.
For example, the fluorine-containing wastewater generated in the production process of lithium batteries has strong corrosiveness, and the pump body needs to have corrosion resistance and resistance to idling characteristics to adapt to liquid level fluctuations and ensure the continuous and stable wastewater treatment process.
Liquid transportation in storage tank area:
The storage tank area in the petroleum and chemical industries needs to regularly extract or transport liquids from the tanks, such as raw materials, products, etc.
There may be flammable and explosive environments in the storage tank area, and the pump body needs to have explosion-proof design to ensure the safe operation of the equipment.
2、 Vertical long shaft semi submersible turbine pump solution
Material selection:
Corrosion resistant material: the flow passage parts are made of FRPP, PVDF, SUS316 and other imported thickened integrated injection molding materials with high purity and no sand holes, and their anti-aging, crystallization and solvent corrosion resistance are far superior to ordinary materials.
High temperature and high pressure resistant materials: For high temperature and high pressure working conditions, stainless steel or special alloy materials are selected to ensure stable operation of the equipment in high temperature and high pressure environments.
Sealing design:
No shaft seal design: Adopting an exclusive patented no shaft seal groove idle structure, it completely solves the industry's common problem of shaft seal wear and leakage, supports dry operation, can adapt to liquid level fluctuation conditions, and does not require complex pipeline modifications for installation.
Dual mechanical seal: For scenarios that require higher sealing performance, a dual mechanical seal structure can be used, with external cleaning and flushing water to prevent medium leakage.
Structural optimization:
Vertical long shaft design: allows the pump body to penetrate deep into the bottom of storage tanks or deep wells, efficiently extracting liquids and reducing residue.
Modular design: easy to disassemble and maintain, reduces downtime, and lowers maintenance costs.
Intelligent control:
Intelligent monitoring: Integrated with intelligent sensors, real-time monitoring of bearing temperature, vibration data and other parameters, preventing sudden failures, supporting remote monitoring and early warning.
Variable frequency control: Based on functions such as automatic start stop, overload alarm, and remote monitoring of liquid level, it improves the automation level of the operation of vertical long shaft semi submersible turbine pump equipment.
Customized services:
Customized shaft length: Provide customized shaft length solutions based on tank size, liquid properties, and other working conditions.
Material customization: Select the most suitable corrosion-resistant material based on the characteristics of the medium.
Flow customization: Adjust the pump body flow rate and head parameters according to actual needs.
3、 Case Presentation
Case 1: A PCB production enterprise adopts a vertical long axis semi submersible turbine pump to circulate and transport acidic etching solution. The pump body is made of PVDF material and has no shaft seal design, which completely solves the problem of liquid leakage, ensures the stability of the etching process, and significantly reduces the product defect rate.
Case 2: A lithium battery production enterprise adopts a vertical long shaft semi submersible turbine pump to treat fluorine-containing wastewater. The pump body is made of stainless steel material, which has anti idling characteristics and adapts to liquid level fluctuations, ensuring the continuous and stable wastewater treatment process and reducing operation and maintenance costs.
The vertical long axis semi submersible turbine pump can adapt to the transportation needs of different corrosive media in the petrochemical industry. By customizing materials and sealing designs, it can solve pain points such as complex media and tight installation space in the industry
Main application scenario analysis
In petrochemical production, vertical long shaft semi submersible turbine pumps are mainly used for medium extraction in deep storage tanks and underground storage tanks, covering three core scenarios:
Raw material and finished product transportation: Extract crude oil, finished oil, and various chemical raw materials (acid and alkali solvents, organic intermediates, etc.) from underground or low-level storage tanks, suitable for special installation scenarios such as deep tanks and underground pools.
Process circulation transportation: In the chemical production process, corrosive process media are circulated and transported continuously without leakage to ensure production continuity.
Wastewater treatment and discharge: Transport production wastewater containing chemical impurities and corrosiveness to meet the transportation requirements for standard discharge or subsequent treatment.
Targeted solutions
1. Corrosion adaptation: customized material solution
Select the corresponding material based on the corrosion strength of the medium, taking into account both performance and cost:
Weakly corrosive medium (ordinary oil, low concentration acid and alkali): The vertical long shaft semi submersible turbine pump can meet the demand by using 304 stainless steel flow components, which has a higher cost-effectiveness.
Strong corrosive medium (strong acid, chlorine containing ion solvent): The vertical long shaft semi submersible turbine pump is made of 316L stainless steel or super duplex steel material, combined with polymer coating protection, with corrosion resistance more than 5 times higher than ordinary carbon steel, avoiding the risk of leakage caused by medium erosion of the pump body.
2. Installation space adaptation: Optimization of vertical long axis structure
For the installation scenarios of deep foundation pit storage tanks and high-level storage tanks, the vertical long axis semi submersible turbine pump adopts a modular lifting pipe design, which can flexibly adjust the long axis length according to the depth of the storage tank. It can be directly inserted and installed from the top of the storage tank without the need to excavate a separate pump room as a foundation. Compared with horizontal pumps, it saves more than 70% of installation space and is suitable for compact layouts in chemical workshops.
The shaft body is matched with multi-stage support guide bearings to ensure the stability of the long shaft transmission, avoid the shaking of the long shaft operation, and prevent the pump from getting stuck when transporting media containing small amounts of impurities.
3. Leakage risk prevention and control: customized sealing solution
Adapt different sealing schemes to meet the safety requirements of leak prevention and explosion prevention in the chemical industry:
Ordinary medium: The vertical long shaft semi submersible turbine pump adopts a high-performance mechanical seal structure, which reduces the leakage rate by 90% compared to traditional packing seals and reduces the frequency of daily maintenance.
Strong corrosive/flammable and explosive media: The vertical long shaft semi submersible turbine pump adopts a corrugated tube mechanical seal and a fully enclosed protective tube structure to completely isolate the medium from the bearing chamber, eliminate the risk of liquid leakage, and can also customize motors that meet ExdIIBT4 explosion-proof standards to meet the safety requirements of flammable and explosive working conditions.
4. Optimization of operation and maintenance convenience: withdrawable rotor design
During maintenance, there is no need to empty the storage tank or remove the pump body. Simply remove the rotor components to replace vulnerable parts such as seals and impellers, greatly reducing maintenance downtime and minimizing losses caused by downtime. Compared to traditional submersible pumps, the maintenance efficiency is more than twice as high.