First of all you see what kind of acid delivery, the following is a common selection of acid pump instructions:
1, Hydrochloric acid pump commonly used hydrochloric acid maximum concentration of 38%, so, hydrochloric acid pump is basically as long as the overcurrent component material is plastic on the line, but if from the life, cost and other aspects to consider, you can use FSB fluorine Alloy centrifugal pump or CQB-F magnetic pump, the price of these two pumps, the performance is satisfactory.
2, Sulfuric acid pump Sulfuric acid pump is divided into dilute sulfuric acid pump and concentrated sulfuric acid pump, the former can choose a larger range, dilute sulfuric acid pump can choose engineering plastic pump, ceramic pump, or F46 pump, F26 pump, the latter Sulfuric acid pump) can only choose fluorine plastic (F46) pump, because the concentrated sulfuric acid will corrode ordinary engineering plastics, but the fluorine plastic will not be corroded. Also note that the high density of concentrated sulfuric acid, pump power when the pump should pay attention to the allocation of large, simple algorithm for the "shaft power" * 1.84 is the shaft power delivery concentrated sulfuric acid.
3, hydrofluoric acid hydrofluoric acid is very corrosive, it is recommended to use fluorine plastic magnetic pump, (and must be the series of ceramic pump parts replaced by hydrofluoric acid-resistant material)
4, nitric acid nitric acid pump also recommended the use of fluorine plastic magnetic pump, and rubber seals to be replaced by PTFE material.
5, acetic acid It is one of the most corrosive substances in organic acids, ordinary steel in all concentrations and temperatures of acetic acid will be severely corrosive, stainless steel is an excellent anti-acetic acid material, 316 stainless steel containing molybdenum can also be suitable for high temperature and Dilute acetic acid steam. For high temperature and high concentration of acetic acid or other corrosive media and other harsh requirements, the choice of high-alloy stainless steel or fluorine plastic magnetic pump. Such as CQB magnetic pump, CQ316L stainless steel magnetic pump
6, salt water (sea water)
Ordinary steel in sodium chloride solution and seawater, salt water corrosion rate is not too high, generally need to use paint protection; various types of stainless steel also have a low uniform corrosion rate, but may cause localized corrosion due to chloride ions, usually 316 stainless steel Better, but the higher the price, it is recommended to use fluorine plastic centrifugal pumps, such as IHF chemical centrifugal pump.
7, Sealed seal form: Magnetic pump is a static seal, so you can not consider the sealing, and centrifugal pumps generally use external bellows mechanical seal, the corrosion resistance and wear resistance are better, such as the delivery of the media containing particles, then Hard to hard mechanical seals can be used.
Gabion & Reno mattress is
a galvanized double twisted hexagonal woven mesh compartmented basket
with a rectangular mattress shape. The compartments or cells of the reno
mattress are of equal size and dimension and are formed by internal
diaphragms. Gabion & Reno mattress have been used for channel
linings, river training, soil retention, slope stabilization and other
applications successfully throughout the world for over 100 years.
Double twisted gabion & reno mattresses offer many advantages, such as flexibility, durability, strength, permeability, ecology, reliability, longevity, low cost and an aesthetic appearance. The thickness of gabion mats is usually between 0.15-0.5m. It is similar to gabion box which could be divided by several cells and adopts thicker diameter wires to form mesh edge.
Features of Gabion & Reno mattress
Flexibility
One of the most important advantages of
gabion & Reno mattresses is their flexibility both for the
individual unit and the overall. The construction of the units permits
it to tolerate differential settlement without failure. This property is
especially important when a structure is on unstable soil conditions or
in areas where scour from wave action or currents can undermine the toe
of the structure and cause structural settlement.
Durability
Gabions & Reno mattresses built from
high strength double twisted hexagonal mesh filled with natural hard
durable stone and connected together to create a monolithic mass
structure capable of undergoing structural movement without any loss of
structural integrity creating a highly durable structure.
Strength
Gabions & Reno mattresses possess the
strength and flexibility to withstand forces generated by water and
earth masses. The most important and relevant strength characteristics
pertaining to gabion and reno mattress design standards are the mesh
punch strength, the mesh tensile strength, the pull apart resistance
strength of the mesh, and the corrosion resistance of the mesh. The
strength values of the double twisted mesh are located within the
individual product specifications for each product and are represented
in ASTM A975-97.
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