(最新版）ngk_cefilt

5/25/2018 ( NGK_cefilt

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Caution

This is a Strategic Product subjects to Foreign Exchange and Foreign Trade Control Law of Japan.

This should not be exported without authorization from the appropriate governmental authorities.

NGK

NGK Ceramic filters:Cefilt


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1

A pioneer in the field of ceramic filters

Since we first began manufacture and sales of single-layer ceramic filters in the 1950s, NGK has continued

with the development and production of various ceramic filters in Japan.

From Cefilt micro filters to high-performance nano filters that can be used in solvent recovery systems and

Cerallec filters for removing particulates from high-temperature gases, NGK is the only comprehensive

manufacturer of ceramic filters in Japan offering a broad lineup.


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10m 0.1m 0.01m

100nm 10nm 1nm 0.5nm 0.3nm

NGK NGK ceramic filters lineup

Pore size

Application field

Separation subject

ClarificationConcentrationRefiningWashing

High-temperaturedust collection

Product recovery

Bacteria removal Low molecular fractions

Water separationIsomer separation

Gas(CO2, N2)Separation refining

DPF(

CO2, N2)

Bacteria Virus Dye

PyrogenYeast

Particle polymer Colloid Low molecular ion

DPF (gas filter) MF filterMF

UF filterUF

NF filterNF

Functional filter

Large nano-ceramic membrane filters

Cerallec C1

Home-use water purifier C1

Cefilt


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5 advantages of Cefilt

Because this product utilizes fine ceramic of 99.9% or higher purity that provides superior corrosion resistance and heat

resistance, it allows stable use in areas and applications where organic membranes cannot be used.

These are environmentally friendly filters that can be used repeatedly by backwashing or chemical cleaning.

They have been used and are highly popular in a broad range of applications, including wastewater treatment such as ingot,

processing wastewater; processing of enzymes, antibiotics, and other active pharmaceutical ingredients; and processing of

mineral water, soy sauce, and other food and beverage products.

Because these filters have high resistance

to corrosion by acids, alkalis, and solvents,

they can be used with a diverse range

of solvents. Cleaning using a variety

of chemicals is also possible, allowing

repeated use that helps to lower running

costs.

Because the f ilters are f ired at super-

high temperatures, there is no thermal

denaturation and they can be used at high

temperatures.

Due to the high mechanical strength, there

is no deformation of the membrane or pore

sizes as a result of pressure. Resistance

to wear is also excellent, and these filters

are highly suited for filtering of high-density

slurries.

The pore distr ibut ion is sharper and

more uniform than in a polymer organic

membrane, resulting in high separation

accuracy and allowing the filter to be used

as a complete bacteria elimination filter.

These f i l ters generate few leached

substances and add almost no impurities

or odor to the products.

99.9

High corrosion resistance High heat resistance High strength High separation Low leaching


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Standard specifications Performance

Values measured by mercury porosimeter

Porevolume

Bacteria eliminationorganic filter

Pore size

100

0.05 0.1

0.1m

0.2m

0.5

m

1m

0.5 1 5 10

50

%

m

Type

MF (Microfiltration)

UF (Ultraltration )

NF (Nanoltration)

Material

Alumina

Alumina, Titania Titania

Pore size

2, 1, 0.5, 0.2, 0.1m 50, 10, 5, 4nm 2nm

Channel

419 337 2.561 337

Length

1000mm500mm, 250mm

Permeability

Pure water

Filtration pressure

5

3

4

2

1

00 0.1 0.2 0.3

m3/m2hr

MPa

: 20

2m

1m

0.5m

0.2m

0.1m

50nm

10nm

5nm

4nm

Filtering layer

Support layer

FiltrateFiltrate

Filtrate Filtrate

Feed

Structure

Cefilt filter cross-section

Cefilt-UF 50,000 filter surface

100nm

CEFI LT-UF 510nm

CEFILT

Magnified view of cross-section


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No. of lters

m2Surface area

MaterialkgApprox. weight

419 337 2.561

1 0.24 0.35 0.48 SUS316, EPDM 5

7 1.7 2.4 SUS316, EPDM 60

19 4.5 6.6 SUS316, EPDM 130

37 8.8 12.9 SUS316, EPDM 230

11 5.2 PVC/SUS304, EPDM 40

SUS316

OJIS

EPDM

During manufacture, the housing material can be changed from SUS316 to a fluororesin lining,

titanium, or other special material according to the application, ensuring that the full high corrosion

resistance and heat resistance of the ceramic membrane filter can be obtained.

The packing utilizes an O-ring seal structure that provides an easy and dependable seal.

The use of JIS standard components means that the material can be easily selected according to

the application, such as EPDM or perfluoro compounds.

Standard module

1476mm

4S4S

2S 2S

300A37

19

7

11

Filter (housing) specifications

ex) 37

Ex.: 37-elements, ferrules

7-elements 37-elements

11-elements19-elements

* Fluororesin lining, titanium, and other special materials can also be used.


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Filtration system

Principle Principle Principle

Characteristics Characteristics Characteristics

Application Application Application

Diafiltration (Purification)Direct filtration Cross-flow filtration

Filtrate

Feed

il

il

il

il

I

Concentrate

il Filtrate

Feed

il

il

il

I

Feed

Concentrate

il il

il

Filtrate

Ceramic membrane

Low molecular-weight material (Impurity)

Solvent displacement (Purified water)

High molecular-weight material (Product)

Feed

Concentrate

il il

il

Filtrate

il

Ceramic membrane

I

Feed

il il

Filtrate

il

il

Ceramic membrane

I

(

Tank

Concentrate(Macromolecule)

(Purified water, etc.)Solvent

Filtrate

Circulation pump

Suitable for use in a variety of ways, including direct filtration, cross-flow filtration, and diafiltration.

The subject fluid is filtered as it flows parallel to the surface of theceramic membrane filter. The shear force caused by the parallelflow keeps the accumulated cake layer to a minimum and ensuresstable filtering over long periods.

With this method, solvent is continually added to the concentrated-fluid side of themembrane, resulting in continual filtration of low molecular-weight materials (suchas ions) through the membrane.

Can be used in a broad range from low-density to high-densityslurries.

Allows efficient solvent displacement (DI water solvent, etc.) and purification bydesalinization of slurries.

Suitable for low-density slurries.

Bacteria removal of mineral water Bacteria elimination, concentration of various slurries, removal ofimpurities from solvents

Refinement of various slurries, solvent displacement

Direct filtering of the subject fluid using a ceramic membrane filter


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MF UF NF

System example Electronic materials field

Ceramic membrane filters capable of microfiltration including MF, UF, and

NF is being put to use in the electronic materials field, where product sizes

are becoming ever smaller.

They are used to remove byproducts such as those generated by

crystallization reactions and in product concentration applications, and are

highly suited for filtration of nano-size particles that cannot be filtered by

centrifuge separation, filter pressing, reprecipitation, or other conventional

methods.

Because these ceramic membrane filters offer high corrosion resistance

and heat resistance, they can be used in electronic materials processes

that often involve alkalis, acid solvents, organic solvents, and special

solutions, and where organic membrane filters cannot be used.

etc.

Product slurry

Wastewater, etc.

Purified water

SolventProduct (powder)Solvent overflow

Problem

Product loss in supernatant fluid

Product loss in separated fluid

Problem

Centrifuge separationPump

Purified water replacementReaction tank

(crystallization, etc.)

Purified polymer

Problem

Many types of solvents are used in large quantities.

Repeated cleaning requires time and effort.

Problem

Wastewater (Oligomer Metal ions)

Solvent

Filtration

MonomerCatalyst

Precipitation method

Repetition

Precipitated polymer

Polymerization reactionProduced polymer

Polymers precipitated by filtrationare separated and recovered.

Progress in product nanosizing

The time-consuming existing process

(Precipitation method)

Reduce product loss

The existing process and a problem

Applications for ultra-fine particles and powders

Applications for polymer ultra-fine particles and powders


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+

+

etc.

Product slurry

Wastewater, etc.

Purified water

SolventProduct (powder)

Solvent

No product leak

Centrifuge separationPump

Pump

Ceramic membrane filterCleaning filtration

Reaction tank(crystallization, etc.)

Ceramic membrane filter

Purified polymer

Wastewater, etc. (Oligomer Metal ions)

Solvent

MonomerCatalyst

No product leak

Used quantity: Decreased

Pump

Ceramic membrane filterCleaning filtration

Polymerization reactionProduced polymer

Ceramicmembrane filter

[ ]

[ ]

Cleaning filtration reduces product loss without particle leakage.

Cleaning filtration reduces quantities of solvents.The quantity of waste solvent is reduced by the same amount.

Allows fully automated cleaning in a closed system, improving workability

and the working environment.

Allows fully automated cleaning in a closed system, improving workability

and the working environment.

By performing concentration before centrifuge separation, secondary

aggregation of ultra-fine product particles increases the trapping effects

during centrifuge separation.

A ceramic membrane filter is used for additional trapping of leakage from

centrifuge separation, allowing waste-free product recovery.

Particularly suitable for polymer production processes that utilize large

quantities of highly volatile organic solvents.

Examples of improvements through the use of a ceramic membrane filter

Improvement

Improvement


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System example

Strong and wear-resistant ceramic membrane filters are ideally suited for

filtering of silicon and other fine metal particles.

Further advantages can be achieved by combining the filters with a solid/

liquid separator such as a centrifuge.

Problem Problem

Problem

Problem

Problem

etc.

Slurry

Wastewater

Concentrated fluid

treated water

Wastewater

Flocculant

Centrifuge separation, etc.

Membrane life is short

Running cost: High

Installation space: Large

High concentration is difficult

Recovery rate of treated water is low

Reuse is impossible

The amount of wastesincreases by using aflocculant

Problem

Problem

Problem

Silicon concentrated fluid

Coolant original fluid

Coolant waste fluid

Recycled coolant(reuse)

Recycled coolant(reuse)

Membrane lifetime is short.

Running cost: High

Large additional amount of new coolant due to the low recovery rateIncreases in waste

Clarification of recycled coolant is insufficient.

Large additional amount of new coolant Increased waste

Clarification of recycled coolant is insufficient.High levels of concentration are difficult.

CMP

Wastewater field

Coagulating sedimentation

Filtration by organic membrane

Filtration by organic membrane

Centrifuge separation

(Example: Exterior polishing of silicon ingots, rough wafer polishing, back-grinder, dicer, CMP, etc.)

This system treats wastewater from polishing processes.

Wafer slicing by wire saw one process in the production of solar cells.

This system removes silicon particles from the waste coolant produced from this process, allowing

the coolant to be reused.

Achieve zero emissions

Improve the quality of recycled fluids


Wastewater and waste fluid treatment system

Coolant treatment system


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Waste coolant

Coolant with minute SS

Centrifuge

Silicon sludge

Ceramic membrane

Recycled coolant (reuse)

Backgrinding CMP Coolant

Wastewater Treatedwater Wastewater Treatedwater Wastewater Treatedwater

SS mg / L 400


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System example

CO2

Food products field

Ceramic membrane filters can be used in many areas of the food productand pharmaceuticals fields, from bacteria removal of mineral water to

clarification of fermentation liquid and precipitation of fermented food

products.

Low leaching makes these filters ideal for food products with strict taste

and smell standards, where organic odors will be noticed.

Problem

Problem

(

Diatomite (concentrated fluid)

Fermentation liquid (clearness)

Diatomite

Use of diatomite generates industrial waste.

Running cost: High

Intrusion of diatomite or similarproblems adversely affects workabilityand the work environment.

Problem

Problem

Fill up withtreated water

Fill up withtreated water

Wastewater

12025 25

Steam Cooling

CO2

Large quantities of filters must be replaced within a short time.

Running cost: High Increases in wasteHot water sterilization involves concerns of pore widening and other deterioration.

The use of steam and coolant results in higherenergy costs and larger CO2emissions.

UHT

Reduce running costs

Reduction in CO2emissions

Clarification of fermentation liquid

Diatomite filtration

Heat sterilization (UHTsterilization)

Bacteria removal by organic membrane (cartridge filter)

Eliminating bacteria from mineral water



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+

CO2

Yeast fungus (concentrated fluid)

Fermentation liquid (clearness)

Cleaning fluid

Chemical cleaning fluid (NaOH etc.)NaOH etc.

Purifiedwater

Heat exchanger

Materials Yeast fungus

Pump

Pump

CIPCIP tank

Circulation tankFermentation


Disinfection water to a filling machine

Cleaning fluid

Chemical cleaning fluid (NaOH etc.)NaOH etc.

Heat exchanger

Pump

Pump

Pump

CIP

CIP tank

Wastewater tank

Fountainhead


[ ]

[ ]

Advantages from use of a ceramic membrane filter

Because no diatomite is used, zero industrial waste is generated.

Lower running costs

Reducing the amount of steam used reduces energy costs and

CO2emissions. (Steam is used only for regular hot water sterilization.)

Using a long-life ceramic membrane filter further reduces

running costs.

Using a long-life ceramic membrane filter further reduces

running costs.

Allows fully automated filtering in a closed system, improving workability

and the work environment (reducing risk of scattered diatomite).

Excellent heat resistance and no pore widening caused by hot water

sterilization

In addition, the trapped material (bacteria) can be removed by regular

chemical cleaning.

Allows stable bacteria management.

Advantages

Advantages


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1stSTEP

2nd

STEP

1. Purpose of filtration

2. Original fluid specifications

3. Processing volume and processing method

4. Required specifications

Filtering tests

PH

MFSS

UF

m3

m3 HR

UF

We have a large lineup of testers to meet customer requests, such as for testing with small volumes.

We also sell and loan testers. Please feel free to consult with us.

For selection of a membrane filter or design of a filtration system, please provide

the following specifications.

Original fluid properties Specific gravity, viscosity, pH, temperature

Type of SS component, concentration, particle sizes

Molecular weight and concentration of valuable

substance for recovery

Batch processing ( m3/batch, hrs/batch)

Continuous processing ( m3/hr, hrs continuous processing)

Filtering accuracy (UF: Cutoff molecular weight)

Recovery of valuable substance: Recovery rate

Concentration filtration: Concentration factor

5L

1000W1000D2000H

Standard tester (fluid volume 5L)

1L 5L

1000W500D500H

Compact tabletop tester (fluid volume 1L 5L)

1L

500W500D 1000H

Compact tabletop tester

(fluid volume 1L)

Basic tests at NGK

Decide the design conditions for the actual system based on your company's specifications.

SSvs Perform concentrated filtering tests and acquire SS concentration vs. filtering speed data.

Running verification tests at your company

Verify the changes in filter differential pressure over time, the chemical cleaning frequency, and cleaning method.

1st STEPBased on the design conditions that were set in Step 1, carry out running tests under scaled-down conditions of the actual system.


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14

Latest technology: Nano-ceramic membrane filters on the worlds largest scale

1801000L

Magnified view of cross section

A functional membrane is formed

on the inner surfaces of the cells.

Cross section

1

CO2

Functional filter

NGK has developed ceramic membrane filters with pore sizes of 1 nm or smaller (sub-

nano) that are on the largest scale of any in the world. These filters allow separation

at the molecular level, making possible a range of processes that had been difficult to

commercialize before, including removing water from organic solvents at large chemical

plants and separation of CO2gas.

Carbon materials are used for t he membrane, allowing water to be removed from acidic

fluids and fluids with high moisture content fluids where water separation was not

possible before.


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L1301-1000

100-6325 241 25 TEL036213-8862

541-0051 413 11 TEL066206-5869

[ ]

NGK

253-0071 2791 TEL046785-8555

Industrial Process Division

Tokyo Main OfficeMarunouchi Bldg. 25F, 2-4-1, Marunouchi, Chiyoda-ku, Tokyo 100-6325Tel. (81) 3-6213-8862Osaka Sales OfficeMidosuji Mitsui Bldg. 11F, 4-1-3, Bingomachi, Chuo-ku, Osaka 541-0051Tel. (81) 6-6206-5869[ MANUFACTURE]

NGK FILTECH, Ltd

2791, Hagizono, Chigasaki-shi, Kanagawa 253-0071Tel. (81) 467-85-8555

URL: http://www.ngk.co.jp/

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