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with the designed dedusting efficiency of more than 99.00%, ensuring excellent filter cartridges cleaning and regeneration performances.? Timing or differential pressure PLC or DCS operation enable system to work continuously by automatic switching.

ADVANTAGES

The continuous gas filtration system is made with high strength and super reliabe sintered metal micropore filter cartridges, featuring high temperature resistance, high filtration precision, online back blowing and continuous high temperature, which could be able to work stably under high air flow. The patent high air flow nozzle and connector with special structures could ensure the dedusting rate of more than 99.9%.

WORKING PRINCIPLE

The process liquid will pass through the filter cartridges from outside to inside. When the fluid is passing through filtration elements, the solid particles will be retained on the outer surface of the filter cartridges to form filtration cakes, increasing the differential pressure before and after the filtration. When the differential pressure reaches preset value, the program controller will be activated to conduct automatic back blowing in the following way:
In case of zoned arrangement inside the filter, grouped back blowing and regenera-tion could be conducted under the condition of continuous filtration.
If the filter is not zoned internally, the inlet and outlet valves of the filter shall be closed to back blow the internal components of the filter cartridges and put the filter back into operation after the back blowing.

APPLICATION CONDITIONS

Purification of industrial gases with high and low temperatures and fume dedusting;

Filtration and recycling of solid particles in gas phase;
Protective filtration of pneumatic units such as compressors.

SCHEMATIC DIAGRAM OF THE FILTRATION SYSTEM

APPLICATIONS

+ Filter cartridges used in S Zorb of gasoline desulfurization device
+ Coal gasification plant filter
+ HDPE high temperature activated furnace filter
+ High temperature and pressure fly ash filter
+ Dust collector

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The designed operation temperature could reach 400℃, with the filtration precision of 0.5 ~200 μm. The system is fully enclosed to prevent contamination, which could provide excellent filter cartridges cleaning and regeneration performances. The system is operated with timing or differential pressure PLC with connected DCS. It is equipped with a rapid slag discharge and collection device, and has such functions as automatic switching and long-term continuous operation.

APPLICATION CONDITIONS

Purification of industrial liquids at high and low temperatures; Collection of solid particles; and pre-treatment of industrial waters.?

ADVANTAGES

Parallel operation of two or more units; online back washing; continuous and stable operation processes; long service life; automatic control; easy operation; convenient maintenance; and application in high temperature and corrosive conditions.

SCHEMATIC DIAGRAM

Double-tank filter (one for operation and one for backup)

APPLICATIONS

+ Filtration of hydrotreating raw oil
+ Recycling of precious metal catalysts in hydrogenation systems
+ Purification and filtration of Catalytic Slurry Oil
+ Purification and filtration of liquid sulfur
+ Filtration of lubricants oils and heating oils
+ Filtration of paraffin raw materials and products
+ Purification of rich and lean amine liquid in amine liquid desulphurization system

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The whole filter is composed of several filtration units in parallel. The filtered liquid is used for back washing and regeneration. When conducting back washing on one filtration unit, the other units shall be used for normal filtration.?

APPLICATION CONDITIONS

The filter could be used to purify liquid medias such as gasoline, heavy-load coked gasoline, diesel, residual oil, sewage and other medias.

ADVANTAGES

Stainless steel wedge filter cartridges are used in the filter, which feature good mechanical rigid, resistance to differential pressure, excellent regeneration perfor-mance and easy washing. The whole equipment has such features as small space occupation, convenient installation and operation, low construction cost, small waste oil discharge and high automation.

WORKING PRINCIPLE

Tube-Type Automatic Back Washing Filter is composed of more than 3 filtration units in parallel.
When the fluid is passing through filter cartridges, the solid particles will be retained on the outer surface of the filter cartridges to form filtration cakes, increasing the differential pressure before and after the filtration. When the differential pressure reaches preset value, the program controller will be activated to conduct automatic back washing in the following way:
The whole facility could use the filtered clean liquid for back washing to remove the filtration cakes deposited on the outer surfaces of filter cartridges. During back washing, the control program will control the feeding valve and discharge valve of one group of filters to cut off the feeding line and open the discharge line of the filter group to rapidly remove the filtration cakes under the pressure from cleaning liquid and discharge the waste oil into the sewage and recovery channel. Then the discharge valve will be closed and inlet valve will be opened to start the normal filtration operation.
The program controller will wash the filters group by group in specified order. During the back washing of one group, the other groups will be still used for normal filtration operation.

SCHEMATIC DIAGRAM

APPLICATIONS

+ Filtration of raw oil in diesel hydrogenation treatment facility
+ Filtration of raw oil gasoline hydrogenation treatment facility
+ Filtration of jet fuel
+ Filtration of raw oil in coked gas oil treatment facility

WORKING PRINCIPLE OF COALESCER

The drops of oil, water and other liquids are captured by the super fine fibers in the coalescer. Such μm-level fibers will form a circuitous passage for air flows to force the solid particles and liquid drops be captured by the fibers through inertial impac-tion, expansion blockage and direct blockage. The surface tension of liquid could make the small drops into a large one, and the separation phase and the continuous phase will be separated with gravity.?

TECHNICAL SPECIFICATIONS

+ Construction materials: polyester fibers and glass fibers
+ Micron: 0.3μm, 0.5μm, 1μm, 5μm and 10μm
+ Recommended differential pressure for coalescer (filter cartridges) replacement: 0.10MPa
+ Initial pressure drop: <0.01Mpa
+ Maximum working temperature of filter cartridgess: 150℃
+ Sealing: fluororubber
+ Dimension: Ф60~150 X 900~1500

APPLICATIONS

+ Gasoline, kerosene and diesel
+ Liquefied petroleum gas, stone tar, benzene and other similar materials
+ Various alcohol and hydrocarbon compounds

The filtration precision is 0.5 ~50 μm. The system is fully enclosed to prevent contamination, which could provide excellent filter cartridges cleaning and regeneration performances. Timing or differential pressure PLC connected to DCS is used for system operation, which could be able to switch to long-term continuous operation.

APPLICATION CONDITIONS

Filtration and purification of industrial liquids at high and low temperatures; and col-lection of solid particles.

ADVANTAGES

Parallel operation of two or more units; online back washing; continuous and stable operation processes; long service life; automatic control; easy operation; convenient maintenance; small sewage discharge; and application in high temperature and corrosive conditions.

WORKING PRINCIPLE

Double-tank automatic back washing filter is composed of two filters (A and B) that are operated in parallel. During the normal filtration operation, one filter will be operated at full flow rate and the other one is used as backup. When the operation differential pressure of the system (the pressure drop between inlet and outlet) reaches the set value or the operation time of the system reaches the set value, the system will automatically switch the working filter to ensure the uninterrupted operation of the whole filtration system.

SCHEMATIC DIAGRAM

Double-tank filter (one operation and one standby)

APPLICATIONS

+ Purification and filtration of catalytic oil slurry
+ Purification of rich and lean amine liquid in amine liquid desulphurization system
+ Material and liquid purification with low waste discharge

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?The metal membrane purification elements and components developed by AEET have won the first prize of the national invention award and many second prizes.?

PERFORMANCES

+ To purify the highly toxic aerosol gas at the very high concentration of 0.1~0.3μm generated under detonation conditions to the level that can meet the GB8703
+ Resistance to strong vibration (more than 500g)
+ Resistance to strong impact (0.5MPa ~ 2.0MPa)
+ High clogging capacity (25g ~ 500g)
+ High breathability (6m3/h ~ 10m3/h)
+ Compacted structure (Φ500x1000 ~ Φ500x1500 mm)

APPLICATIONS

The purification elements and components have an important role in the purification of hydrogen and its isotope gases, production of solid nuclear fuels, treatment of nuclear wastes and retired nuclear facilities, purification and discharge of nuclear waste gases and the civil nuclear power industry.?

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This is a typical dynamic semi-cross process, realizing the integration of reaction and separation outside the filter. Using parallel cross technolo-gies, the device could effectively suppress the thickening of the filtration cakes. Thanks to its stable operation, adjustable clean filter liquid amount and high filtration precision as well as its automatic online inspection, automatic control and automatic back washing systems, and convenient maintenance, it is of great importance for enterprises to improve their product qualities, save resources, reduce energy consumption and improve environmental conditions.

ADVANTAGES

The whole equipment has such features as small space occupation, convenient installation and operation, low construction cost, no waste liquid discharge and high automation.

APPLICATIONS

Cross-flow filtration process could be used in a great variety of applications, especially for the separation of the reaction materials with high solid content (more than 25wt%). The process is not sensitive to the changes to the sizes, density and concentration of suspended particles, and has good anti-contamination capacity, which is applicable to large-scale and continuous production.