Demineralized (Distilled) Water Storage Tanks

In the power and petrochemical industries, there is a need to store large volumes of water, for example, for demineralized water. Enterprises in these industries use demineralized or distilled water, since ordinary water, due to the content of a large amount of salts and mineral impurities, can lead to the deposition of hardness salts on pipelines and internal equipment systems, which entails a violation of its operability or causes a serious breakdown.

Demineralized water is also used by some metalworking enterprises and oil and gas complexes.

The ideal material for distilled water, including demineralized water, is stainless steel. This is a metal protected from corrosion due to its natural properties.

The unique properties of stainless steel are due to the presence of chromium in its composition, due to the oxidation of which a very thin, but very strong and stable oxide film is formed on the surface, which is also restored in the event of damage or mechanical processing of steel.

Tanks for demineralized (desalinated) water

Water that is deeply purified from salts and impurities, depending on the purpose, process and degree of purification, is called demineralized, deionized, desalinated or distilled. Such types of water are widely used in thermal power engineering, nuclear power engineering, pharmaceuticals and industry.

Water purification from dissolved impurities up to 98% is possible in reverse osmosis water deionization units. Membrane demineralization of water allows you to remove mineral salts and chemical compounds from water.

The carbon dioxide removal system, Tank vent CO2 absorber/Tank CO2 breathe filter, is responsible for further storage of demineralized water. It removes CO2 entering the tank during its breathing. The tank breathes as a result of pumping and pumping water into the tank, as well as as a result of thermal breathing. The calculation of tank breathing is based on the API 2000 standard. It is necessary to take into account the total volume of air entering the tank, since it can be used to calculate the volume of CO2 entering the tank with air.

Installing the Tank vent CO2 absorber/Tank CO2 breathe filter of the Alfaintek system on the vent nozzle of the tank allows you to completely prevent carbon dioxide from entering the tanks.

One of the most common methods of cleaning air from carbon dioxide is a mechanical process. Adsorption also includes chemisorption, where the absorption process occurs through a chemical reaction between the captured substance and the sorbent. This method is used in Alfaintek Tank vent CO2 absorbers, which capture carbon dioxide from the air. Our company has developed special CO2 filters with low pressure losses. The filters use a special AL adsorbent. They work on the principle of adsorption, with the help of which carbon dioxide molecules are retained by the absorbent. When a certain saturation is reached, the filter is replaced with a new one.

Alfaintek Tank vent CO2 absorber (from the Latin sorbeo - absorb) is specialized equipment for removing CO2 and dust, dirt, aerosol and micromechanical impurities. Due to its high efficiency, the absorption method of dry gas cleaning is in high demand in many industries.

Depending on the design features, Alfaintek Tank vent CO2 absorber are divided into types by installation method.

The main parts of any type of absorber are a sealed housing that acts as a container for the filler, internal devices, connection nozzle and supports.

Calculation of Tank vent CO2 absorber

For the most effective air purification from CO2, it is necessary to correctly calculate the Tank vent CO2 absorber. In this case, the following main indicators are calculated: the size of the absorber body, the size of the flange, hydraulic and other characteristics.

Our Engineers calculate Tank vent CO2 absorber in the following sequence:

1. Determine the amount of CO2 entering the tank, calculate the material balance, determine the initial and final concentration of contaminants in each phase, as well as the absorbent consumption.
2. Then, based on the data obtained empirically, plot the graphs of the equilibrium and working cleaning line. And for this, preliminarily recalculate the concentration of the pollutant in fractions of the number of constant inclusions. After all, the calculations require an inert part of the gas-air mixture in the gas phase and a clean absorber in the solid phase.
3. Next, calculate the driving force of mass transfer and the optimal speed of movement of the gas-air mixture.
4. Determine the irrigation density and proceed to find the mass transfer and mass transfer coefficients.
5. Then find the mass transfer surface.
6. After this, proceed to calculate the dimensions of the gas cleaning unit and packing.
7. And at the final stage, the hydraulic resistance of the gas cleaning equipment is determined.
8. The absorber block is an absorbent unit consisting of several elements.