一、Electric condensate recovery unit steam system
The closed condensate recovery unit is a complex system project. Using the principle of fluid mechanics single-phase flow and two-phase flow, the OMEXELL heat transfer technology center can introduce the condensate back to the condensate recovery unit unimpeded under the condition of low back pressure through the comprehensive application of high and low pressure common network technology, injection pressurization technology and automatic pressure adjustment technology. Using the kinetic energy of automatic pressure separation technology, steam technology, fast condensate platoon guide, pressurization cavitation technology, eliminating and flexible level since the harmonic steam exhaust suction and other technical means, combined with special structure design of the special water recycling pump, can eliminate water pump cavitation problem, ensure in the closed operation of the condensate can steadily to the users in the system.
A series of condensate recovery special gear pump uses 3D CAD design software and CFD computational fluid dynamics software to design the impeller for professional hydraulic design, and has a specially designed first stage NPSH induced impeller. The NPSH induced impeller allows the pump to operate normally under adverse conditions on the inlet side and under conditions of absolute suction height below 0.5 m. The A series of condensate recovery pumps are unparalleled and irreplaceable for excellent performance, ensuring long-term stable operation under high temperature condensate conditions.
二、Steam-operated condensate recovery unit
OMEXELL’s steam-operate condensate recovery pump is a mechanical condensate recovery pump with low maintenance and no electricity operation. It is powered by steam or compressed air, and directly condenses water and other liquids from vacuum or The pressure is discharged from the equipment and transported from the low, low or vacuum zone to the high and high pressure zones. When used with steam traps, it can effectively remove condensed water from temperature-controlled heat exchangers under various working conditions and even vacuum conditions, and there are no technical problems such as leakage or cavitation.
三、Condensate polishing system
Condensate polishing technology mainly includes membrane separation technology and ion exchange technology. OMEXELL is a company that has both technology and products for membranes and ion exchange resins. From zero effluent of steam condensate to refinery wastewater treatment, from electronic ultrapure water to desalination, OMEXELL membranes and ion exchange technologies and products provide users with a variety of water solutions.
The recovery rate of steam condensate in China is less than 30%. The main reason is that the recovered condensed water contains excessive oil and other pollutants, including animal and vegetable oils, petroleum hydrocarbons, naphthenic acid, phenolic and other derivatives. The specific gravity and viscosity of water and oil in high-temperature condensed water are reduced, and the resistance to oil-water dispersion is reduced. Except for the mechanically dispersed oil (15~100μm) in suspension, the oil in high-temperature condensed water is mainly in the form of emulsified oil (0.5~15μm) and dissolved oil (0.005μm). Usually the dispersion is suspended on the water surface, the emulsified oil is stably dispersed in water, and the dissolved oil is completely dissolved in the water. The steam transfer line is generally made of carbon steel, which is easily corroded in aerobic and acidic environments. Corrosion products are mainly suspended and colloidal Fe? O?、Fe? O? a small amount of insoluble Fe(OH)3 And in the form of ions Fe2+ and Fe3+。Iron ions in steam condensate due to oxygen corrosion and acid corrosion。
四、Traps
1. Float type steam trap
It automatically adapts to high and low load changes, and is not affected by sudden changes in working pressure. Its large displacement and continuous discharge capacity ensure maximum heat transfer efficiency, and can be applied to air heaters, dryers, heat exchangers and sandwich pots.
Performance characteristics
Continuous drainage, stable performance, large displacement and low air leakage rate.
It is quickly vented, tightly closed, and equipped with an automatic air venting device to ensure quick start-up and maximum operating efficiency.
The structure is sturdy, resistant to water hammer and vibration, and the operation is stable and reliable.
The trim is made of stainless steel, durable and reliable, ensuring good corrosion and wear resistance and long service life.
2、Inverted bucket steam trap
A mechanical trap that works on the principle of leverage and buoyancy based on the difference in density between condensate and steam. Reliable work, strong structure can be widely used in petroleum, chemical, textile, printing and dyeing, pharmaceutical, food and other industrial steam heating systems.
Performance characteristics
The lever differential pressure mechanism has a simple structure and a long service life.
It has strong adaptability to the amount of condensed water, and can be drained intermittently and continuously drained.
The soda water separation is reliable, the valve is always in the water seal state, there is no steam leakage, and the energy saving effect is remarkable.
High back pressure rate for efficient recovery of condensate.
The parts inside the valve are all stainless steel, which are installed on the valve cover, which has strong corrosion resistance and convenient maintenance.
3、Bimetal steam trap
The bimetal steam trap is mainly used for discharging condensed water below the steam saturation temperature. It is widely used in steam heating pipes, vessel heating, equipment insulation, general steam piping, and small steam equipment.
Performance characteristics
Eam heating pipes, vessel heating, equipment insulation, general steam piping, and small steam equipment.
Performance characteristics
The bimetal components are designed to be sensitive, continuous drainage, no noise, and strong corrosion resistance.
The size is small, the installation is convenient, and the installation angle is free.
4、Thermodynamic steam trap
Applicable to steam pipelines, heat tracing pipelines, jacketed tubing, storage tank tanks, etc., and can be used in steam subcritical state of high temperature and high pressure saturated steam main and turbine.
Performance characteristics
The structure is sturdy, light weight, small in size and large in pressure range.
The specific air automatic discharge device can quickly eliminate the initial air and ensure quick start.
The discharge is rapid, close tightly, and does not produce back suction, ensuring maximum efficiency of the equipment.
It can withstand superheated steam and is resistant to water hammer, freezing and vibration.
5、Steam separator
By using the steam flow to a sharp conversion mode, the steam is separated from the suspended water droplets contained in the steam to ensure steam drying, improving product quality and production efficiency.
6、Steam trap pump
According to the pressure change in the pipeline, the conversion of the function of the drain pump and the steam trap is automatically realized, which is particularly suitable for the condensed water discharge in the steam heating system with pressure fluctuation, so as to ensure the stable and reliable operation of the system.
7、Flash steam recovery tank
The superheated condensate or the boiler discharge water enters the tank along the retort line of the flash tank. According to the theory of fluid two-phase flow and vortex separation, after the tank is expanded, the pressure is reduced, and flash steam is generated in the tank, which can be introduced into the low-pressure steam pipeline or passed. After the injector is pressurized, it is introduced into the medium-pressure pipeline to enter the heating equipment to heat the material, so that the original low-quality heat energy can be reused. The saturated condensate collected in the lower portion flows through the trap to the condensate recovery device or the deaerating water tank.
8、For more information about OMEXELL products, please call 400-6186-920 or 0531-88878938
